KR102665369B1 - A lens moving unit, and camera module and optical instrument including the same - Google Patents

Abstract

The embodiment includes a housing, a bobbin disposed in the housing, a magnet disposed in the housing, a first coil disposed in the bobbin and facing the magnet, an inner frame coupled to the top of the bobbin, an outer frame coupled to the top of the housing, and an inner frame. and an upper elastic member including a frame connection portion connecting the outer frame, a third coil facing the magnet in the optical axis direction, and a support member including one end coupled to the upper elastic member, wherein the upper elastic member is connected to the upper part of the housing and the upper elastic member. It includes an outer part that is coupled, a first coupling part that is coupled to one end of the support member, and a first connection part that connects the outer part and the first coupling part, and the width of the first connection part is smaller than the width of the outer part.

Description

Lens driving device and camera module and optical device including the same {A LENS MOVING UNIT, AND CAMERA MODULE AND OPTICAL INSTRUMENT INCLUDING THE SAME}

Embodiments relate to a lens driving device and a camera module and optical device including the same.

Since it is difficult to apply the voice coil motor (VCM) technology used in existing general camera modules to camera modules for ultra-small size and low power consumption, related research has been actively conducted.

In the case of camera modules mounted on small electronic products such as smartphones, the camera module may frequently receive shock during use, and the camera module may slightly shake due to the user's hand tremors during filming. In consideration of this, recently, a technology for additionally installing a means to prevent camera shake in a camera module has been developed.

For information related to the camera module, see Patent Publication No. 10-2015-0008662 (publication date: January 23, 2015) and US Patent Publication No. US 2011/0141564 (publication date: June 16, 2011). can do.

Embodiments include a lens driving device that prevents disconnection or damage to the second coil due to external impact, enables soldering of the second coil and the upper spring without separate wire arrangement, and improves solderability, and includes the same. Provides camera modules and optical devices that

A lens driving device according to an embodiment includes a housing; a bobbin disposed within the housing; A magnet disposed in the housing; a first coil disposed on the bobbin and facing the magnet; an upper elastic member including an inner frame coupled to the top of the bobbin, an outer frame coupled to the top of the housing, and a frame connection portion connecting the inner frame and the outer frame; a third coil facing the magnet in the optical axis direction; and a support member including an end coupled to the upper elastic member, wherein the upper elastic member includes an outer portion coupled to the upper portion of the housing. a first coupling portion coupled to the one end of the support member; and a first connection part connecting the outer part and the first coupling part, wherein the width of the first connection part is smaller than the width of the outer part.

The lens driving device may include a damping member disposed between the outer peripheral surface of the bobbin and the inner peripheral surface of the housing.

The bobbin may include a protrusion coupled to the inner frame of the upper elastic member.

The lens driving device includes a base disposed below the third coil, and the other end of the support member may be fixed to the base. The lens driving device may include a lower elastic member coupled to a lower portion of the bobbin and a lower portion of the housing.

The outer portion may include a second coupling portion coupled to one region of the housing, a third coupling portion coupled to another region of the housing, and a second coupling portion connecting the second coupling portion and the third coupling portion. You can.

The first connection part may include a third connection part connecting the second coupling part and the first coupling part, and a fourth connection part connecting the third coupling part and the first coupling part. The width of the third connection part and the width of the fourth connection part may be smaller than the width of the outer part. The second connection portion may include a convex shape from the center of the housing toward a corner of the housing.

The third connection part and the fourth connection part may be smaller than the width of the second connection part. The first connection portion may include a bent portion that is bent at least once.

The support member may include a wire disposed at each of the four corners of the housing.

The housing may include at least one protrusion coupled to the outer frame of the upper elastic member, and the outer frame of the upper elastic member may include at least one hole coupled to the at least one protrusion of the housing. .

The first coil is electrically connected to the upper elastic member, and a driving signal may be applied to the first coil. The lens driving device may include a position sensor disposed on the base and detecting displacement of the housing by detecting a magnetic field of the magnet. The outer portion is left and right asymmetrical with respect to a reference line, and the reference line may be a straight line passing through the center of the housing and a corner of the housing.

The first coil is disposed to surround the outer peripheral surface of the bobbin, the magnet is disposed on each of four sides of the housing, and the third coil may include a substrate and coils formed on the substrate.

A lens driving device according to another embodiment includes a housing; a bobbin disposed within the housing; A magnet disposed in the housing; a first coil disposed on the bobbin and facing the magnet; an upper elastic member coupled to the upper part of the bobbin and the upper part of the housing; a third coil facing the magnet in the optical axis direction; and a support member including one end coupled to the upper elastic member, wherein the upper elastic member includes a first coupling portion coupled to the one end of the support member. a second coupling portion coupled to one area of the housing; a third coupling portion coupled to another area of the housing; A first connection part including a first part connecting the first coupling part and the second coupling part and a second part connecting the first coupling part and the third coupling part; and a second connection part connecting the second connection part and the third connection part, and the width of the first connection part is smaller than the width of the second connection part. The first connection part may be disposed outside the second connection part based on the center of the housing.

The embodiment prevents disconnection or damage to the second coil due to external impact, allows soldering of the second coil and the upper spring without separate wire arrangement, and improves solderability.

Figure 1 shows a perspective view of a lens driving device according to an embodiment.
FIG. 2 is an exploded view of the lens driving device shown in FIG. 1.
FIG. 3 shows a combined diagram of the lens driving device of FIG. 1 excluding the cover.
FIG. 4A is a first perspective view of the bobbin and first coil shown in FIG. 1.
FIG. 4B is a second perspective view of the bobbin and first coil shown in FIG. 1.
FIG. 5A is a first perspective view of the housing shown in FIG. 1.
FIG. 5B is a second perspective view of the housing shown in FIG. 1.
FIG. 6 shows a cross-sectional view in the AB direction of the lens driving device shown in FIG. 3.
Figure 7 is a perspective view of the upper elastic member shown in Figure 2;
Figure 8 shows an enlarged view of the first outer frame of the first upper spring shown in Figure 7;
FIG. 9 shows a combined perspective view of the upper elastic member, lower elastic member, third coil, circuit board, and base of FIG. 2.
Figure 10 shows an exploded perspective view of the third coil, circuit board, base, first and second position sensors, and amplifier.
Figure 11 shows a top view of Figure 3.
FIG. 12A shows a perspective view of the first dotted line portion of FIG. 11.
FIG. 12B shows a perspective view of the second dotted line portion of FIG. 11.
13 shows an extension and a damper according to another embodiment.
Figure 14 shows mutual inductance according to the separation distance between the first coil and the second coil.
Figure 15 shows an exploded perspective view of a camera module according to an embodiment.
Figure 16 shows a perspective view of a portable terminal according to an embodiment.
FIG. 17 shows a configuration diagram of the portable terminal shown in FIG. 16.

Hereinafter, embodiments will be clearly revealed through the accompanying drawings and descriptions of the embodiments. In the description of the embodiment, each layer (film), region, pattern or structure is “on” or “under” the substrate, each layer (film), region, pad or pattern. In the case where it is described as being formed, “on” and “under” include both being formed “directly” or “indirectly through another layer.” do. Additionally, the standards for top/top or bottom/bottom of each floor are explained based on the drawing.

In the drawings, sizes are exaggerated, omitted, or schematically shown for convenience and clarity of explanation. Additionally, the size of each component does not entirely reflect the actual size. Additionally, the same reference numbers indicate the same elements throughout the description of the drawings.

For convenience of explanation, the lens driving device according to the embodiment is described using a Cartesian coordinate system (x, y, z), but it can also be described using another coordinate system, and the embodiment is not limited to this. In each drawing, the x-axis and y-axis refer to directions perpendicular to the z-axis, which is the direction of the optical axis. The z-axis direction, which is the optical axis or a direction parallel to the optical axis, is called the 'first direction', and the x-axis direction is called the 'second direction'. ', and the y-axis direction can be referred to as the 'third direction'.

An 'image stabilization device' applied to small camera modules of mobile devices such as smartphones or tablet PCs is a device that prevents the outline of the captured image from being clearly formed due to vibration caused by the user's hand shaking when shooting still images. It may refer to a device configured to do so.

Additionally, an 'autofocusing device' is a device that automatically focuses an image of a subject onto the image sensor surface. Such image stabilization devices and auto-focusing devices can be configured in various ways. The lens driving device according to the embodiment moves the optical module composed of at least one lens in a first direction parallel to the optical axis, or moves the optical module in the first direction parallel to the optical axis. An image stabilization operation and/or an auto-focusing operation may be performed by moving about a surface formed by the second and third directions perpendicular to the .

FIG. 1 shows a perspective view of the lens driving device 100 according to an embodiment, FIG. 2 is an exploded view of the lens driving device 100 shown in FIG. 1, and FIG. 3 shows the lens driving device of FIG. 1 excluding the cover 300. Shows the degree of coupling of the device 100.

1 to 3, the lens driving device 100 includes a bobbin 110, a first coil 120, a magnet 130, a housing 140, an upper elastic member 150, and a lower elastic member 160. ), and may include a second coil 170.

Additionally, the lens driving device 100 may further include a circuit board 250.

Additionally, the lens driving device 100 may further include a support member 220.

Additionally, the lens driving device 100 may further include a third coil 230 and position sensors 240. Additionally, the lens driving device 100 may further include a cover member 300 and a base 210.

The cover member 300 will be described.

The cover member 300 accommodates other components 110, 120, 130, 140, 150, 160, 170, 220, 230, and 250 in a receiving space formed together with the base 210.

The cover member 300 may be open at the bottom and have a box shape including a top plate and side plates, and the lower part of the cover member 300 may be coupled to the upper part of the base 210.

The cover member 300 may be provided with an opening in the upper plate that exposes a lens (not shown) coupled to the bobbin 110 to external light.

The material of the cover member 300 may be a non-magnetic material such as SUS to prevent sticking to the magnet 130, but the yoke is made of a magnetic material to increase electromagnetic force due to interaction with the first coil 120. It may also function as a (yoke).

Next, the bobbin 110 will be described.

The bobbin 110 may be equipped with a lens or lens barrel and is disposed inside the housing 140.

FIG. 4A is a first perspective view of the bobbin 110 and the first coil 120 shown in FIG. 1, and FIG. 4B is a second perspective view of the bobbin 110 and the first coil 120 shown in FIG. 1.

Referring to FIGS. 4A and 4B, the bobbin 110 has a first protrusion 111 protruding from the upper surface in a first direction, and a first protrusion 111 protruding from the outer peripheral surface of the bobbin 110 in the second and/or third directions. 2 may include a protrusion 112.

The first protrusion 111 of the bobbin 110 may include a first guide portion 111a and a first stopper 1111b. The first guide portion 111a of the bobbin 110 may serve to guide the installation position of the upper elastic member 150. For example, the first guide portion 111a of the bobbin 110 may guide the first frame connection portion 153 of the upper elastic member 150.

The second protrusion 112 of the bobbin 110 may be formed to protrude from the outer peripheral surface 110b of the bobbin 110 in the second and/or third directions. The bobbin 110 may be provided with a second stopper 116 protruding from the lower surface.

The bobbin 110 may include side parts 110b-1 corresponding to or opposing the magnet 130 and side parts 110b-2 located between the side parts 110b-1.

The bobbin 110 may be provided with at least one first coil groove (not shown) in which the first coil 120 is disposed or installed on the outer peripheral surface 110b. The shape and number of grooves for the first coil may correspond to the shape and number of the first coils 120 disposed on the outer peripheral surface 110b of the bobbin 110. In another embodiment, the bobbin 110 may not have a groove for the first coil, and the first coil 120 may be wound and fixed directly on the outer peripheral surface 110b of the bobbin 110.

Additionally, a protrusion 113 that engages the hole 151a of the first inner frame 151 of the upper elastic member 150 may be provided on the upper surface of the bobbin 110.

The protrusion 113 may include a first upper protrusion 113a and a second upper protrusion 113b that are spaced apart from each other on the side portions 110b-1 of the bobbin 110.

The first upper protrusion 113a is for fusion bonding with the first inner frame 151 of the upper elastic member 150, and the second upper protrusion 113b is for fusion bonding to the upper elastic member 150 through solder or a conductive adhesive member. ) for electrical connection with the first inner frame 151. For example, the diameter of the first upper protrusion 113a may be larger than the diameter of the second upper protrusion 113b.

The bobbin 110 may have a first lower coupling groove 117 on its lower surface that is coupled and fixed to the hole 161a of the lower elastic member 160. In another embodiment, a support protrusion may be provided on the lower surface of the bobbin 110 for coupling to the hole 161a of the lower elastic member 160.

A thread 11 for coupling with a lens or lens barrel may be provided on the inner peripheral surface 110a of the bobbin 110. A thread 11 can be formed on the inner peripheral surface of the bobbin 110 while the bobbin 110 is fixed by a jig, etc., and the upper surface of the bobbin 110 has grooves 15a and 15b for fixing the jig. ) can be provided. For example, the jig fixing grooves 15a and 15b may be provided on the upper surfaces of the opposing sides 110b-2 of the bobbin 110, but are not limited thereto.

Next, the first coil 120 will be described.

The first coil 120 is disposed on the outer peripheral surface 110b of the bobbin 110 and may be a driving coil that electromagnetic interaction with the magnet 130 disposed in the housing 140.

A driving signal (eg, driving current or voltage) may be applied to the first coil 120 to generate electromagnetic force by interaction with the magnet 130.

The driving signal applied to the first coil 120 may be an alternating current signal, for example, an alternating current. For example, the driving signal provided to the first coil 120 may be a sinusoidal signal or a pulse signal (eg, a pulse width modulation (PWM) signal).

Alternatively, in another embodiment, the driving signal applied to the first coil 120 may include an alternating current signal and a direct current signal.

The AF movable part or mover may move in the first direction by electromagnetic force generated by the interaction between the first coil 120 and the magnet 130. By controlling the strength or/and polarity (e.g., direction in which the current flows) of the driving signal applied to the first coil 120, the strength of electromagnetic force due to the interaction between the first coil 120 and the magnet 130 and/and By adjusting the direction, the movement of the AF movable unit in the first direction can be controlled, thereby performing an auto-focusing function.

The AF movable unit or mover may include a bobbin 110 elastically supported by the upper elastic member 150 and the lower elastic member 160, and components mounted on the bobbin 110 and moving with the bobbin 110. . For example, the AF movable unit may include a bobbin 110, a first coil 120, and a lens (not shown) mounted on the bobbin 110.

The first coil 120 may be wound or arranged to surround the outer peripheral surface of the bobbin 110 to rotate clockwise or counterclockwise about the optical axis. In another embodiment, the first coil 120 may be implemented in the form of a coil ring wound or arranged in a clockwise or counterclockwise direction about an axis perpendicular to the optical axis, and the number of coil rings is equal to the number of magnets 130. It may be the same, but is not limited thereto.

The first coil 120 may be electrically connected to at least one of the upper elastic member 150 or the lower elastic member 160, the upper elastic member 150 or the lower elastic member 160, and the support member 220. It can be electrically connected to the circuit board 250 through . For example, the first coil 120 may be electrically connected to the third and fourth upper springs 150-3 and 150-4.

Next, the housing 140 will be described.

The housing 140 accommodates the bobbin 110 on which the first coil 120 is disposed inside.

FIG. 5A is a first perspective view of the housing 140 shown in FIG. 1, FIG. 5B is a second perspective view of the housing 140 shown in FIG. 1, and FIG. 6 is a lens driving device 110 shown in FIG. 3. Shows a cross-sectional view in the AB direction.

Referring to FIGS. 5A, 5B, and 6, the housing 140 may have an overall pillar shape with an opening, and may include a plurality of side portions 141 and 142 forming the opening.

For example, the housing 140 may include side portions 141 that are spaced apart from each other and side portions 142 that are spaced apart from each other. Each of the sides 141 of the housing 140 may be disposed or located between two adjacent sides 142, may connect the sides 142 to each other, and may include a plane of a certain depth. there is.

The side portions 142 of the housing 140 may be expressed as “corner members” in that their positions correspond to the corner areas of the housing 140. .

For example, in FIG. 5A , the housing 140 may include first to fourth side portions and first to fourth corner portions 501a to 501d.

The first side and the third side may face each other in the second direction, and the second side and the fourth side may face each other in the third direction.

The first corner portion 501a may be located between the first side and the second side of the housing 140, and the second corner portion 501b may be located between the second side and the third side of the housing 140. The third corner portion 501c may be located between the third side and the fourth side of the housing 140, and the fourth corner portion 501d may be located between the fourth side and the first side of the housing 140. It may be located between the sides.

The sides 141 of the housing 140 may correspond to or face the sides 110b-1 of the bobbin 110, and the sides 142 of the housing 140 may correspond to the sides 110b-1 of the bobbin 110 ( It may correspond to or face 110b-2), but is not limited to this.

Magnets 130 (130-1 to 130-4) may be placed or installed on the sides 141 of the housing 140, and a support member 220 may be placed on the sides 142 of the housing 140. You can.

The housing 140 may include magnet seating portions 141a provided on the inner surfaces of the side portions 141 to support or accommodate the magnets 130-1 to 130-4.

The outer surface of the housing 140 may be provided with a first groove 148 for winding or receiving the second coil 170.

For example, the first groove 148 of the housing 140 may be recessed from the outer surface of the sides 141 and the outer surfaces of the sides 142 of the housing 140, and may have a ring shape. It is not limited to this.

For example, the first groove 148 of the housing 140 may be provided on the outer surface of the side parts 141 and the top of the outer surface of the side parts 142.

For example, the first groove 148 of the housing 140 may be spaced apart from the upper surface of the housing 140 and may be provided on the magnets 130-1 to 130-4 disposed in the housing 140. .

Grooves 61a, 61b, and 61 may be provided in at least one of the sides 141 of the housing 140.

For example, the second groove 61a may be provided on the first side of the housing 140, and the third portion 17c of the second coil 170 may be disposed in the second groove 61a. The third groove 61b may be provided on the third side of the housing 140, and the fifth portion 17e of the second coil 170 may be disposed.

For example, the groove 61 may be disposed on each of the first to fourth sides of the housing 140.

For example, the grooves 61a, 61b, and 61 may be penetrating grooves that penetrate the side portion 141 of the housing 140 and have an open top.

In FIG. 5A, two grooves 61a, 61b, and 61 spaced apart from each other are provided on the side portion 141 of each housing 140, but the present invention is not limited thereto.

Each of the grooves 61a, 61b, and 61 may be connected to the first groove 148 and may be located above the first groove 148.

For example, the second groove 61a is between the protrusion 143b disposed on the first corner portion 501a and the protrusion 31a disposed on the first side of the housing 140 adjacent to the first corner portion 501a. can be placed in

For example, the third groove 61b is between the protrusion 143b1 disposed on the second corner portion 501b and the protrusion 31b disposed on the third side of the housing 140 adjacent to the second corner portion 501b. can be placed in

In addition, the groove 61 is located between the protrusion 32b disposed on the third side of the housing 140 and the protrusion 143b disposed on the third corner portion 501c, and disposed on the first side of the housing 140. It may be located between the protrusion 32a and the protrusion 143a disposed at the fourth corner portion 501d.

For example, the grooves 61a, 61b, and 61 may be located above the first groove 148 where the first portion 17a of the second coil 170 is disposed, and the grooves 61a, 61b, and 61 The lower part may be provided with an opening connected to the first groove 148.

The first and second grooves 61a, 61b of the housing 140 may serve as passages through which part of the second coil 170 and another part pass, and the grooves 61a, 61b, 61 of the housing 140 ) may serve as an injection port for injecting adhesive for attaching the magnet 130 to the housing 140.

The housing 140 may be provided with a guide protrusion 65 on its inner surface for guiding the adhesive injected into the grooves 61a, 61b, and 61. The guide protrusion 65 may serve to prevent the adhesive from flowing down into the housing 140.

The side portions 141 of the housing 140 may be arranged parallel to the side plate of the cover member 300. A hole 147a through which the support member 220 passes may be provided in the side portions 142 of the housing 140. The hole 147a may have a diameter that gradually increases from the upper surface to the lower surface of the housing 140. This is to easily place the damper, which will be described later, in the hole 147a.

Additionally, in order to prevent direct collision with the inner surface of the cover member 300, a second stopper 144 may be provided on the upper surface of the housing 140. For example, the second stopper 144 may be disposed at each corner of the first to fourth corner portions 501a to 501d of the housing 140, but is not limited thereto.

In addition, when the upper elastic member 150 is disposed on the upper surface of the housing 140, the housing 140 is provided on the upper surface to guide the installation position of the first outer frame 152 of the upper elastic member 150. 2 A guide portion 146 may be provided.

The second guide portion 146 may be spaced apart from the second stopper 144 and disposed in the corner portions 501a to 501d of the housing 140. For example, the second guide portion 146 and the second stopper 144 may face each other in the diagonal direction. Here, the diagonal direction may be a direction from the center of the housing 140 toward the second stopper 144.

The housing 140 includes at least one first protrusion 143a provided on the upper surface of the side portions 142 for coupling to the holes 152a1 and 152a2 of the first outer frame 152 of the upper elastic member 150. 143b, 143a1, 143b1) may be provided.

The first protrusions 143a, 143b, 143a1, and 143b1 may be disposed on the upper surface of at least one of the first to fourth corner portions 501a to 501d of the housing 140.

For example, the housing 140 includes first protrusions 143a and 143a1 disposed on one side of the second guide portion 146 and first protrusions 143b and 143b1 disposed on the other side of the second guide portion 146. may include.

For example, the shapes of the first protrusions 143a and 143b may be the same, but are not limited to this, and at least one of the first protrusions 143a1 and 143b1 may have a different shape from the first protrusions 143a and 143b.

In addition, the housing 140 includes at least one second protrusion 32a, 32b provided on the upper surface of the side portions 142 for coupling to the hole 26 of the first outer frame 152 of the upper elastic member 150. ) can be provided.

For example, the second protrusions 32a and 32b may be disposed on the upper surfaces of two opposing side parts 141 of the housing 140, but are not limited thereto.

For example, the second protrusion 32a may be located on one side 141 of the housing 140 adjacent to the first corner portion 501a, for example, on the upper surface of the first side. The second protrusion 32b may be located on another side 141 of the housing 140 adjacent to the second corner portion 501b, for example, on the upper surface of the third side.

For example, the second protrusions 32a and 32b may be located on two sides 141 of the housing 140 facing each other in the second or third direction.

In addition, the housing 140 is provided on the upper surface of the side portions 141 of the housing 140 for stable fixation of a part (e.g., line of sight) and another part (e.g., longitudinal line) of the second coil 170. It may be provided with protrusions (31a, 31b).

For example, the protrusions 31a and 32b may be disposed on two opposing sides of the sides 141 of the housing 140, for example, the upper surfaces of the first side and the third side of the housing 140. . Additionally, the protrusions 31a and 32b may be disposed on the first and third sides of the housing 140 where the second protrusions 32a and 32b are located.

For example, the first protrusion 31a is disposed on the upper surface of the first protrusion 143b disposed on the first corner portion 501a and the first side of the housing 140 adjacent to the first corner portion 501a. It may be disposed between the second protrusions 32a.

Also, for example, the second protrusion 31b is disposed on the upper surface of the third side of the housing 140 adjacent to the first protrusion 143b1 disposed on the second corner portion 501b and the second corner portion 501b. It can be placed between the second protrusions 32b.

For example, the first groove 61a includes a first protrusion 143b disposed on the first corner portion 501a and a first protrusion disposed on the first side of the housing 140 in contact with the first corner portion 501a ( 31a), and the second groove 61b is located on the second protrusion 143b1 disposed on the second corner 501b and the third side of the housing 140 in contact with the second corner 501b. It may be located between the second protrusions 31b disposed in .

This means that the first and second grooves 61a and 61b are located adjacent to the corresponding one of the first and second protrusions 31a and 32b, so that part of the second coil 170 and the other part can be easily connected. This is to enable it to be wound around the first and second protrusions 31a and 32b.

In addition, the housing 140 includes at least one provided on the lower surface of the sides 142 of the housing 140 for coupling and fixing the hole 162a of the second outer frame 162 of the lower elastic member 160. It may be provided with protrusions (145). For example, the protrusion 145 may be disposed on at least one of the first to fourth corner portions 501a to 501d of the housing 140, but is not limited thereto.

In order to secure the path through which the support member 220 passes, as well as to secure a space for filling silicon that can act as a damping, the housing 140 has a groove 142a provided in the lower part of the side portion 142. It can be provided. For example, the groove 142a of the housing 140 may be filled with damping silicon.

The housing 140 may be provided with a third stopper 149 protruding from the outer surface of the side portions 141 in the second or third direction. For example, in 5a, the housing 140 is provided with two stoppers 149a and 149b spaced apart from each other on the outer surface of the side portions 141, but is not limited thereto.

The third stopper 149 is used to prevent the housing 140 from colliding with the inner surface of the side plate of the cover member 300 when it moves in the second and third directions.

In order to prevent the bottom surface of the housing 140 from colliding with the base 210, third coil 230, and/or circuit board 250, which will be described later, the housing 140 has a fourth stopper protruding from the bottom surface. (not shown) may be further provided.

Next, the magnets 130 (130-1 to 130-4) will be described.

The magnets 130-1 to 130-4 are disposed inside the sides 141 of the housing 140, but are not limited thereto. In another embodiment, the magnets 130-1 to 130-4 may be disposed outside the sides 141 of the housing 140.

At the initial position of the bobbin 110, the magnet 130 may be disposed on the sides 141 of the housing 140 to correspond to or be aligned with the first coil 120 in a direction perpendicular to the optical axis direction.

For example, the magnets 130-1 to 130-4 disposed in the housing 130 may overlap the first coil 120 in the second or third direction at the initial position of the bobbin 110. there is.

Here, the initial position of the bobbin 110 is the initial position of the AF movable part without power applied to the first coil 120, and the upper elastic member 150 and the lower elastic member 160 are only the weight of the AF movable part. It may be the position where the AF movable part is placed as it is elastically deformed only by .

In addition, the initial position of the bobbin 110 is the position at which the AF movable part is placed when gravity acts in the direction from the bobbin 110 to the base 210, or, conversely, when gravity acts in the direction from the base 210 to the bobbin 110. It can be. The AF movable unit may include a bobbin 110 and components mounted on the bobbin 110, for example, a first coil 120.

In another embodiment, the magnet seating portion 141a is not provided on the sides 141 of the housing 140, and the magnet 130 is disposed on either the outside or the inside of the sides 141 of the housing 140. It could be.

The shape of the magnet 130 may have a shape corresponding to the side portions 141 of the housing 140, for example, a rectangular parallelepiped shape, but is not limited thereto.

The magnet 130 may be a unipolar magnet or a bipolar magnet arranged so that the surface facing the first coil 120 is the S pole and the outer surface is the N pole. However, this is not limited, and it is also possible to configure it in the opposite way.

In the embodiment, the number of magnets 130 is 4, but the number is not limited thereto. The number of magnets 130 may be at least 2 or more, and the surface of the magnet 130 facing the first coil 120 is flat. It may be formed as a curved surface, but it is not limited thereto.

Next, the upper elastic member 150 and the lower elastic member 160 will be described.

The upper elastic member 150 and the lower elastic member 160 are coupled to the bobbin 110 and the housing 140 and elastically support the bobbin 110.

For example, the upper elastic member 150 may be coupled to the top, top surface, or top of the bobbin 110 and the top, top surface, or top of the housing 140, and the lower elastic member 160 may be coupled to the bobbin 110. ) can be combined with the lower part, lower surface, or lower end of the housing 140.

FIG. 7 is a perspective view of the upper elastic member 150 shown in FIG. 2, and FIG. 8 shows an enlarged view of the first outer frame 152 of the first upper spring 150-1 shown in FIG. 7. 9 shows a perspective view of the upper elastic member 150, lower elastic member 160, third coil 230, circuit board 250, and base 210 of FIG. 2 combined, and FIG. 10 shows the third coil ( 230), an exploded perspective view of the circuit board 250, the base 210, the first and second position sensors 240a and 240b, and the amplifier 310 is shown.

Referring to FIGS. 7 to 10 , at least one of the upper elastic member 150 or the lower elastic member 160 may be divided or separated into two or more pieces.

For example, the upper elastic member 150 may include first to fourth upper springs 150-1 to 150-4 spaced apart from each other. Here, “upper spring” may also be expressed as “spring.”

The upper elastic member 150 and the lower elastic member 160 may be implemented as leaf springs, but are not limited thereto, and may also be implemented as coil springs, suspension wires, etc.

Each of the first to fourth upper springs 150-1 to 150-4 is coupled to the top, upper surface, or top of the bobbin 110, the first inner frame 151, and the upper portion of the housing 140. It may include a first outer frame 152 coupled to the surface or top, and a first frame connection portion 153 connecting the first inner frame 151 and the first outer frame 152.

For example, the first frame connection part 153 may connect the first outer frame 152, for example, the third coupling part 510-2 and the inner frame.

Each of the first and second frame connection portions 153 and 163 of the upper and lower elastic members 150 and 160 may be bent or curved at least once to form a pattern of a certain shape. . The bobbin 110 may be elastically (or elastically) supported in an upward and/or downward motion in the first direction through a change in position and slight deformation of the first and second frame connectors 153 and 163.

The first outer frame 152 of each of the first to fourth upper springs 150-1 to 150-4 includes an outer portion 510 coupled to the housing 140 and a support member 220-1 to 220-4. It may include a first coupling part 520 coupled to, and a first coupling part 530 connecting the outer parts 510a to 510d and the first coupling part 520.

And the first coupling portion 520 may include a first extension portion 540 extending from the first coupling portion 520 in a direction toward the outer portions 510a to 510d.

The outer portions 510a to 510d may be disposed on the corner portion and the side portion 141 of at least one housing 140 adjacent thereto.

For example, the outer portions 510a to 510d are at least one of a corner portion of the housing 140, a side of the housing 140 adjacent to the corner portion, or another side of the housing 140 adjacent to the corner portion. can be combined

For example, the first outer portion 510a includes a second coupling portion 510-1 disposed on the first side of the housing 140 and coupled to the housing 140, and a second coupling portion 510-1 adjacent to the first side of the housing 140. A third coupling portion 510-2 disposed on the side and coupled to the housing 140, and a second coupling portion 510- connecting the second coupling portion 510-1 and the third coupling portion 510-2. 3) may be included.

At least one first outer frame of the first to fourth upper springs 150-1 to 150-4 has an outer portion, a first coupling portion, and a first outer frame that is not disposed in the corner portion but is disposed on the side of the housing 140. 1 It may also include a connection part connecting the coupling part and the outer part. In this case, the outer portion may not be coupled to the housing at the corner portion, but may be coupled to the housing at a side portion of the housing adjacent to the corner portion.

The first connection part 530 includes a third connection part 530a connecting the second coupling part 510-1 and the first coupling part 520, and a third coupling part 510-2 and the first coupling part ( It may include a fourth connection portion 530b connecting the 520).

The first extension 540 may be spaced apart from the outer portion 510a. The first extension portion 540 may include a portion whose width becomes wider as it extends in the direction from the first coupling portion 520 toward the outer portion 510a. For example, the first extension portion 540 may include a portion whose width becomes wider as it extends from the first coupling portion 520 toward the center point 101 of the upper springs 150-1 to 150-4.

For example, the part where the width of the first extension 540 is widened may be fan-shaped, and when the coupling area 520a is centered, the central angle θ1 of the fan-shaped first extension 540, FIG. 13 reference) may be 40 degrees to 160 degrees. If the central angle (θ1, see FIG. 13) of the first extension 540 is less than 40 degrees, the effect of improving solderability may be minimal, and if the central angle of the first extension 540 is greater than 160 degrees, the first connection portion ( 530) and spatial interference may occur.

The portion of the first extension 540 corresponding to the outer portion 510a may include a shape corresponding to the shape of the outer portion 510a.

For example, the first extension part 540 may be spaced apart from each of the third connection part 530a and the fourth connection part 530b.

The first extension part 540 is a second extension part extending from the first coupling part 520 to the second coupling part 510-1, and a third coupling part 510-2 from the first coupling part 520. It may include a third extension part extending to and a fourth extension part extending from the first coupling part 520 to the second coupling part 510-3.

The damping member 91 may connect the first extension part 540 and the outer part 510a. For example, the damping member 91 may be disposed between the first extension part 540 and the second connection part 510-3.

For example, the second coupling portion 510-1 may include a hole 152a2 coupled to the second protrusion 143b of the housing 140, and the third coupling portion 510-2 may include the housing 140. It may include a hole 152a1 coupled to the second protrusion 143a.

For example, the second coupling portion 510-1 may be located on one side of the reference line (e.g., 501), and the third coupling portion 510-2 may be located on the other side of the baseline (e.g., 501). there is.

7 and 8, each of the second coupling portion 510-1 and the third coupling portion 510-2 is implemented to include through holes 152a1, 152a2, 25, and 26, but is limited thereto. This is not the case, and in other embodiments, the second and third coupling parts may be implemented in various shapes sufficient to couple with the housing 140, for example, groove shapes, etc.

For example, each of the holes 152a1 and 152a2 may have at least one cutout 21a for allowing the adhesive member to penetrate between the protrusions 143a and 143b and the holes 152a1 and 152a2.

The second coupling portion 510-1 includes a first corner portion 501a, holes 152a2, 26 located on the first side of the housing adjacent to the first corner portion 501a, and holes 152a2, 26. It may be provided with a groove 81 located in between.

For example, the second coupling portion 510-1 is disposed at the first corner portion 501a and connected to the first region S1 and the first corner portion S1 where the hole 152a2 is disposed. It may include a second region S2 extending to the upper surface of the first side of the housing 140 adjacent to (501a).

For example, the second coupling portion 510-1 is disposed at the first corner portion 501a and connected to the first region S1 and the first corner portion S1 where the hole 152a2 is disposed. It may include a second region S2 extending to the upper surface of the first side of the housing 140 adjacent to (501a).

For example, in another embodiment, the second coupling portion may be disposed on at least one of the first corner portion or a side of the housing 140 adjacent to the first corner portion, and may be disposed on the first corner portion or the first corner portion. It may be coupled to at least one of the sides of the neighboring housing 140.

A groove 81 into which the protrusion 31a of the housing 140 is inserted may be provided in the second area S2, and a second protrusion 32a of the housing 140 may be provided at one end of the second area S2. A coupling hole 26 may be provided.

For example, the first protrusion 143b of the first corner portion 501a of the housing 140 and the hole 152a2 of the second coupling portion 510-1 may be fusion-coupled, and the second protrusion 143b of the housing 140 may be fused. The protrusion 32a and the hole 26 of the second coupling portion 510-1 may be fused together. Fusion bonding may mean that the second protrusion 32a is joined to the upper spring by heat.

Since the protrusions 143b and 32a located on both sides of the first protrusion 31a of the housing 140 are fused to the outer portion of the first upper spring 150-1 of the upper spring 150-1, For example, the first outer portion 510a of the first upper spring 150-1 can be stably fixed to the housing 140, and one end of the second coil 170 can be stably fixed to the first upper spring 150-1. ) can be coupled to the first outer portion 510a. Therefore, the embodiment can prevent disconnection or damage to the second coil 170 due to external impact.

The third coupling portion 510-2 includes at least one hole 152a1 located in at least one of the first corner portion 501a or another side of the housing 140 adjacent to the first corner portion 501a. , 25) can be provided.

For example, the third coupling portion 510-2 is disposed at the first corner portion 501a and is connected to the third region S3 where the hole 152a1 is disposed and the first corner portion 510-2. It may include a fourth region S4 extending to the upper surface of another side of the housing 140 adjacent to (501a).

A hole 25 may be provided at one end of the fourth region S4 for coupling to the housing 140 through an adhesive member. In FIG. 8, the shape of the hole 25 is cross-shaped, but the shape is not limited thereto and may be, for example, circular, oval, or polygonal.

For example, in another embodiment, the third coupling portion may be disposed on at least one of the first corner portion or any other side of the housing 140 adjacent to the first corner portion, and may be disposed on the first corner portion or the first corner. It may be coupled to at least one of the other sides of the housing 140 adjacent to the part.

The second connection part 510-3 may connect the second coupling part 510-1 and the third coupling part 510-2.

For example, the second connection part 510-3 may connect the first area S1 of the second coupling part 510-1 and the third area S3 of the third coupling part 510-2, and the housing The installation position may be guided by the second guide 146 of (140).

For example, the second connection portion 510-3 may have a convex shape in the direction from the center point 101 to the first corner portion 501a of the housing 140, but is not limited to this, and the corner portion of the housing 140 ( In 501b), it may have a convex shape in a direction toward the center of the housing 140.

The first coupling portion 520 may have a hole 52 through which the support member 220 passes. One end of the support member 220 that passes through the hole 52 may be coupled to the first coupling portion 520 by a conductive adhesive member or solder 910, and the first coupling portion 520 and the support member 220 ) can be electrically connected.

The first coupling portion 520 may include a coupling region 520a coupled to the support member 220 by solder 901, and the coupling region 520a is where the hole 52 and the solder 901 are disposed. It may include an area around the hole 520.

The first connection part 530 may connect the first coupling part 520 to at least one of the second coupling part 510-1 or the third coupling part 510-2.

For example, the first connection part 530 includes a third connection part 530a connecting the first region S1 of the second coupling part 510-1 and the first coupling part 520, and a third coupling part ( It may include a fourth connection portion 530b connecting the third region S3 of 510-2) and the first coupling portion 520.

Each of the third connection portion 530a and the fourth connection portion 530b may include a bent portion that is bent at least once or a curved portion that is bent at least once, but is not limited thereto, and may have a straight shape in another embodiment.

The width W31 of the first connection part 530 is the first width W11 and W12 of the second connection part 510-1, the second width W21 and W22 of the third connection part 510-2, And it may be narrower than the third width W3 of the second connection portion 510-3.

For example, the first widths (W11, W12) may be the minimum width among the widths of the entire area of the second coupling portion (510-1), and the second widths (W21, W22) may be the minimum width of the third coupling portion (510-2). It may be the minimum width among the widths of all areas, and the third width W3 may be the minimum width among the widths of all areas of the second connection part 510-3.

Since W31<W12, W31<W22, and <W31<W3, the first connection portion 530 can be easily moved in the first direction, thereby reducing the stress applied to the upper elastic member 150 and the support member ( 220) can disperse the stress applied to it.

The first extension portion 540 may extend by a preset length L1 in a direction (hereinafter referred to as “extension direction”) from the coupling area 520a of the first coupling portion 520 toward the outer portion 510a. .

For example, the preset length (L1) may be 0.1 mm to 2 mm. If L1 is less than 0.1 mm, the area of the first extension part 540 is small and the heat dissipation effect is minimal, so solderability may not be improved. If L1 exceeds 2 mm, the spatial area of the first connection part 530 and the outer part may not be improved. Interference may occur.

For example, in order to improve solderability and at the same time ensure sufficient exclusion of interference with the first connection portion 530 and the outer portion, L1 may be 0.2 mm to 1.2 mm.

For example, the extension direction is from the coupling area 520a of the first coupling part 520 to the second coupling part 510-1, the third coupling part 510-2, or the second coupling part 510 of the outer part 510a. It may be a direction toward at least one of -3).

The first length L1 of the first coupling part 520 may be longer than the second length L2 of the first coupling part 520. The first length L1 may be the distance from the coupling area 520a to one end of the first coupling portion 520 extending in the extension direction of the first extension portion 540. The second length L2 may be the distance from the coupling area 520a to the other end of the first coupling part 520 extending in a direction opposite to the direction in which the first extension part 540 extends.

The length (L1) of the first extension part 540 is the distance (L2) from the coupling area 520a of the first coupling part 520 to the end of the first coupling part 520 located in the opposite direction of the extension direction. It can be longer (L1>L2).

Also, for example, the area of the top surface of the first extension part 540 may be larger than the area of the top surface of the first coupling part 520.

The first extension portion 540 serves to increase the area that transfers heat to the first coupling portion 520 and improve solderability when soldering to couple the first coupling portion 520 and the support member 220. can do.

The first extension part 540 may be spaced apart from the outer part 510a and the first connection part 530.

For example, the first extension portion 540 includes the first region (S1) of the second coupling portion (510-1), the third region (S3) of the third coupling portion (510-2), and the second connecting portion (510- 3), it may be spaced apart from the third connection part 530a and the third connection part 530b.

The separation distance between the first extension part 540 and the second connection part 510-3 is the separation distance between the first area S1 of the first extension part 540 and the second coupling part 510-1 and the first extension It may be shorter than the separation distance between the portion 540 and the third area S3 of the third coupling portion 510-2, but is not limited thereto.

For example, the separation distance between the first extension part 540 and the second connection part 510-3 may be 0.03 mm to 0.2 mm. If the separation distance between the first extension part 540 and the second connection part 510-3 is less than 0.03 mm, spatial interference may occur between the first extension part 540 and the second connection part 510-3, When the separation distance between the first extension part 540 and the second connection part 510-3 exceeds 0.2 mm, the gap between the two is widened so that the distance between the first extension part 540 and the second connection part 510-3 is increased. It is difficult to form a damper in

In order to exclude such spatial interference and sufficiently secure the ease of forming a damper, for example, the separation distance between the first extension part 540 and the second connection part 510-3 may be 0.06 mm to 0.15 mm.

The shape of the first extension 540 may be one in which the width increases in the extension direction to increase the heat transfer area, but it is not limited to this and may be implemented in various shapes.

For example, the first extension 540 includes at least one first vertex (M1) located to the left of the reference line 501, and at least one second vertex (M1) located to the right of the reference line 501 ( It may have a shape including M2), but is not limited thereto.

In order to support the housing 140 in a balanced manner so that it is not biased to one side, the outer portion 510 may be left and right symmetrical with respect to the reference line, but this is not limited thereto, and in other embodiments, it may not be left and right symmetrical.

For example, the second to third coupling parts and the second connecting parts 510-1 to 510-3 may be left and right symmetrical with respect to the reference line (eg, 501), but are not limited thereto.

In addition, in order to support the housing 140 in a balanced manner so as not to be biased to one side, the first coupling portion 520 may be left and right symmetrical with respect to the reference line, but this is not limited to this, and in other embodiments, it may not be left and right symmetrical. there is.

In addition, in order to support the housing 140 in a balanced manner so as not to be biased to one side, the first connection portion 530 may be left and right symmetrical with respect to the reference line, but the present is not limited thereto, and in other embodiments, it may not be left and right symmetrical. .

In addition, in order to support the housing 140 in a balanced manner so as not to be biased to one side, the first extension 540 may be left and right symmetrical with respect to the reference line, but this is not limited thereto, and in other embodiments, it may not be left and right symmetrical. there is.

The reference lines 501 to 504 may be straight lines passing through the center point 101 (see FIG. 7 ) and one of the corresponding edges of the corner portions 501a to 501d of the housing 140 .

Here, the center point 101 may be the center of the housing 140 or the center of the positions of the upper springs 150-1 to 150-4.

Also, for example, the first frame connection portion 153 of the first to fourth upper springs 150-1 to 150-4 may be symmetrical by rotation (e.g., 90° rotation) with respect to the center point 101 (see FIG. 7). You can.

For example, each of the second to fourth upper springs 150-2 to 150-3 may have a similar or identical shape to the first upper spring. For example, the description of the first upper spring 150-1 of FIG. 8 may be applied to each of the second to fourth upper springs 150-2 to 150-3.

The second to fourth outer portions 510b to 510d of the second to fourth upper springs 150-2 to 150-4 each have a first coupling portion, a second coupling portion, a third coupling portion, and a second coupling portion. It may include a connection part.

The shape of the first coupling portion of the second to fourth outer portions 510b to 510d may be the same as the shape of the first coupling portion 520 of the first upper spring 150-1, and the description thereof may be applied. there is. That is, the description of the first coupling portion 520 of the first outer portion 510a may be applied to the first coupling portion of each of the second to fourth outer portions 510b to 510d.

The shape of the second coupling portion or the shape of the third coupling portion of at least one of the second to fourth outer portions 510b to 510d may be different from the shape of the second coupling portion or the shape of the third coupling portion of the first outer portion.

For example, the second coupling portion of the second outer portion 510b is disposed in one area of the second corner portion 501b and has a hole 152a2 coupled to the first protrusion 143a1 of the second corner portion 501b. Can include 1 area. The second coupling portion of the second outer portion 510b may not be provided with an area corresponding to the second region S2 of the second coupling portion 510-1 of the first outer portion 510a. Alternatively, the second coupling portion of the second outer portion 510b may be provided with an area corresponding to the second region of the second coupling portion 510-1 of the first outer portion 510a, but the length may be shorter. .

The third coupling portion of the second outer portion 510b is disposed in another area of the second corner portion 501b and has a hole 152a1 coupled to the first protrusion 143b1 of the second corner portion 501b. It may include three regions, and a fourth region connected to the third region and extending to the upper surface of the third side of the housing 140 adjacent to the second corner portion 501b.

A groove 81 into which the protrusion 31b of the housing 140 is inserted may be provided in the fourth region of the second outer portion 510b, and a second protrusion 32b of the housing 140 is formed at one end of the fourth region. A hole 26 in which is coupled may be provided.

For example, the first protrusion 143b of the second corner portion 501b of the housing 140 and the hole 152a1 of the second coupling portion of the second outer portion 510b may be fused and joined, and the first protrusion 143b of the second corner portion 501b of the housing 140 may be fused. 2 The protrusion 32b and the hole 26 of the second coupling portion of the second outer portion 510b may be fused together.

Since the protrusions 143b1 and 32b located on both sides of the second protrusion 31b of the housing 140 are fused to the second outer portion 510b of the second upper spring 150-2, the embodiment is 2 The second outer portion 510b of the upper spring 150-2 can be stably fixed to the housing 140, and the other end of the second coil 170 can be stably attached to the second upper spring 150-2. 2 Can be coupled to the outer portion (510b). Therefore, the embodiment can prevent disconnection or damage to the second coil 170 due to external impact.

For example, the second coupling portion of the third outer portion 510c may be disposed in one region of the third corner portion 501c and may include a first region provided with a hole coupled to the first protrusion of the third corner portion 501c. . The second coupling portion of the third outer portion 510c may not be provided with an area corresponding to the second region S2 of the second coupling portion 510-1 of the first outer portion 510a. Alternatively, the second coupling portion of the third outer portion 510c may be provided with an area corresponding to the second region S2 of the second coupling portion 510-1 of the first outer portion 510a, but the length may be longer. It can be short.

The third coupling portion of the third outer portion 510c may be the same as the third coupling portion 510-2 of the first outer portion 510a, and may be connected to the third coupling portion 510-2 of the first outer portion 510a. The description may be applied to the third coupling portion of the third outer portion 510c.

The second coupling portion of the fourth outer portion 510d is disposed in one region of the fourth corner portion 501d and is provided with a hole 152a2 coupled to the first protrusion 143b of the fourth corner portion 501d. , and a second region connected to the first region and extending to the upper surface of the fourth side of the housing 140 adjacent to the fourth corner portion 501d.

The third coupling portion of the fourth outer portion 510d is disposed in another area of the fourth corner portion 510d and has a hole 152a1 coupled to the first protrusion 143a of the fourth corner portion 501d. Can include areas. The third coupling portion of the fourth outer portion 510d may not be provided with an area corresponding to the fourth region of the first outer portion 510a. Alternatively, the third coupling portion of the fourth outer portion 510d may be provided with an area corresponding to the fourth region of the third coupling portion 510-2 of the first outer portion 510a, but the length may be shorter. .

The description of the second connection part of the first outer part 501a may be applied to the second connection part of each of the second to fourth outer parts 501b to 510d.

In FIG. 7 , the shape of the first outer portion 510a is partially different from the shape of the second to fourth outer portions 510b to 510d, but is not limited thereto. For example, in another embodiment, the shape of each of the first to fourth outer portions may be implemented to be the same as the shape of the first outer portion 510a of FIG. 7 .

In another embodiment, the shape of at least one of the first to fourth outer portions of the upper elastic member 150 is the same as the shape of any one of the second to fourth outer portions 510b to 510d or the shape of the second to fourth outer portions 510b to 510d. It can be implemented as a combination of the four outer parts 510b to 510d.

The lower elastic member 160 includes a second inner frame 161 coupled to the lower part, lower surface, or lower end of the bobbin 110, and a second outer frame coupled to the lower, lower surface, or lower end of the housing 140 ( 162), and a second frame connection portion 163 connecting the second inner frame 161 and the second outer frame 162.

In addition, the lower elastic member 160 is disposed on the second inner frame 161 and has a hole 161a coupled to the first lower coupling groove 117 of the bobbin 110 by soldering or a conductive adhesive member, and a second It may be provided with a hole 162a disposed on the outer frame 162 and coupled to the second protrusion 147 of the housing 140.

Each of the first and second frame connection portions 153 and 163 of the upper and lower elastic members 150 and 160 may be bent or curved at least once to form a pattern of a certain shape. . The bobbin 110 may be elastically (or elastically) supported in an upward and/or downward motion in the first direction through a change in position and slight deformation of the first and second frame connectors 153 and 163.

The lens driving device 100 includes a damping member or damper 91 disposed between the second connection portion 510-3 and the first extension portion 540 of the upper springs 150-1 to 150-4, see FIG. 12A. ) can be further provided. The damper 91 may serve to absorb or cushion the vibration of the support member 220 or to cushion the movement of the support member 220.

For example, the damper 91 may contact the second connection portion 510-3 and the first extension portion 540, and may be connected to the second connection portion 510-1 and the third connection portion 510-2. They may be separated, but are not limited to this.

For example, the damper 91 may be disposed between the side surface of the second connection part 510-3 and the side surface of the first extension part 540, which face each other. Also, for example, the damper 91 may be disposed on the upper or/and lower surface of the second connection portion 510-3, or may be disposed on the upper or/and lower surface of the first extension portion 540.

Additionally, the damper 91 may be spaced apart from the corner portions 501a to 501d of the housing 140, but is not limited thereto. In another embodiment, the damper 91 may contact the corner portions 501a to 501d of the housing 140.

Figure 13 shows the first extension 540a and the damper 92 according to another embodiment.

Referring to FIG. 13, the first extension portion 540 shown in FIG. 8 extends from the first coupling portion 520 to the second connecting portion 510-3, but the first extension portion 540a shown in FIG. 13 ) is a second extension portion 540-1 extending from the first coupling portion 520 to the second coupling portion 510-1, and from the first coupling portion 520 to the third coupling portion 510-2. A third extension part 540-2 extends, and a second extension part 540-1 and a third extension part 540-2 extend from the first coupling part 520 to the second connection part 510-3. ) may include a fourth extension portion 540-3 connecting them to each other.

The first extension portion 540a of FIG. 13 can further increase the area that transfers heat to the first coupling portion 520 when soldering to couple the first coupling portion 520 and the support member 220. Solderability can be further improved.

In Figure 8, the first separation distance D1 between the second connection part 510-3 and the first extension part 540 is the second separation distance between the second coupling part 510-1 and the first extension part 540. (D3), and the third separation distance (D2) between the third coupling portion (510-2) and the first extension portion (540).

On the other hand, in the embodiment of FIG. 13, the first separation distance D1 between the second connection part 510-3 and the first extension part 540a is the second coupling part 510-1 and the first extension part 540a. ) may be the same as the second separation distance D2 between them and the third separation distance D3 between the third coupling portion 510-2 and the first extension portion 540a. Because of this, the embodiment can increase the heat transfer area of the first extension 540a, for example, the area of the upper and lower surfaces of the first extension 540a, and improve solderability.

For example, D1, D2, and D3 may be 0.03 mm to 0.2 mm.

In addition, in order to exclude spatial interference between the first extension 540a and the coupling parts and to facilitate forming a damper, for example, D1, D2, and D3 may be 0.06 mm to 0.15 mm.

Additionally, the lens driving device 100 is provided between the second coupling portion 510-1 and the second extension portion 540-1, between the third coupling portion 510-2 and the third extension portion 540-2, and a damping member or damper 92 disposed between at least one of the second connection portion 510-3 and the fourth extension portion 540-3, and the damping member or damper 92 is a support member. It may serve to absorb or cushion the vibration of 220 or cushion the movement of the support member 220.

For example, the damping member or damper 92 is between the side surfaces of the second and third coupling parts 510-1 and 510-2 and the side surfaces of the first extension part 540a, and between the side surfaces of the second connection part 510-3. It may be disposed between the side and the side of the first extension portion 540a, the side of the second to third coupling portions 510-1 and 510-3, the side of the second connecting portion 510-3, and the second connecting portion 510-3. 1 It may contact the side of the extension part 540a.

Also, for example, the damping member or damper 92 may be disposed on the upper or/and lower surface of at least one of the second to third coupling portions 510-1 and 510-2, and the second connecting portion 510-3. and may be disposed on the upper or/and lower surface of the first extension portion 540a.

For example, in another embodiment, the damping member may be disposed only between the second connection portion 510-3 and the first extension portion 540a, and in this case, D1 may be smaller than D2 and D3, but is not limited thereto, and D1 may be larger than D2 and D3.

Additionally, the damping member or damper 92 may be spaced apart from the corner portions 501a to 501d of the housing 140, but is not limited thereto. In another embodiment, the damping member or damper 92 may contact the corner portions 501a to 501d of the housing 140.

In order to absorb and buffer the vibration of the bobbin 110, the lens driving device 100 includes a first damping member (not shown) disposed between each of the upper elastic members 150-1 to 150-4 and the housing 140. ) can be further provided.

For example, a first damping member (not shown) may be disposed in the space between the first frame connection portion 153 of each of the upper springs 150-1 to 150-4 and the housing 140.

Also, for example, the lens driving device 100 may further include a second damping member (not shown) disposed between the second frame connection portion 163 of the lower elastic member 160 and the housing 140.

Also, for example, the lens driving device 100 may further include a third damping member disposed between the support member 220 and the hole 147a of the housing 140.

Also, for example, the lens driving device 100 may further include a fourth damping member disposed at one end of the first coupling portion 520 and the support member 220, and the other end of the support member 220 and a circuit board ( 250) may further include a fifth damping member disposed.

For example, a damping member (not shown) may be further disposed between the inner surface of the housing 140 and the outer peripheral surface of the bobbin 110.

Next, the second coil 170 will be described.

The second coil 170 is disposed on the outer surface of the housing 140.

For example, the second coil 170 may be disposed on the upper side of the outer surfaces of the sides 141 and 142 of the housing 140.

The second coil 170 may have a ring shape wound to rotate clockwise or counterclockwise about the optical axis. For example, the second coil 170 may have a ring shape surrounding the outer surfaces of the first and second sides 141 and 142 of the housing 140 in a clockwise or counterclockwise direction relative to the optical axis.

The second coil 170 may be located below the upper elastic member 150 and above the magnet 130.

At the initial position of the AF movable unit (eg, bobbin 110), the second coil 170 may not overlap the magnet 130 in a direction perpendicular to the optical axis. This is to reduce mutual interference between the magnet 130 and the sensing coil 170.

At the initial position of the AF movable unit (e.g., bobbin 110), the second coil 170 is positioned at a preset distance from the first coil 120 in the optical axis direction, and the first coil 170 is positioned in the direction perpendicular to the optical axis. It may not overlap with (120). Maintaining a preset distance between the first coil 120 and the second coil 170 in the optical axis direction is to ensure linearity of the induced voltage induced in the second coil 170 by the current of the first coil 120. It is for this purpose.

At the initial position of the AF movable unit, the second coil 170 may overlap with the magnet 130 in the optical axis direction, but the present invention is not limited thereto, and in another embodiment, the two may not overlap each other in the optical axis direction.

The second coil 170 may be disposed on the outer surface of the sides 141 and 142 of the housing 140 so that at least a portion of the second coil 170 is located outside the support member 220. For example, the outside of the support member 220 may be opposite the center of the opening of the housing 140 with respect to the support member 220 .

The second coil 170 may be an induction coil for detecting the position or displacement of the AF movable part, for example, the bobbin 110. For example, the second coil 170 may be implemented in the form of a wire, FPCB, or FP (Fine Pattern) coil.

For example, when the AF movable unit moves due to interaction between the first coil 120 to which a driving signal is provided and the magnet 130, an induced voltage may be generated in the second coil 170. The magnitude of the induced voltage of the second coil 170 may change depending on the displacement of the AF movable part. By detecting the magnitude of the induced voltage generated in the second coil 170, the displacement of the AF movable part can be detected, and AF feedback operation can be performed using the detected displacement of the AF movable part, resulting in accurate AF operation. can be performed.

FIG. 14 shows mutual inductance according to the separation distance between the first coil 120 and the second coil 170. The X-axis represents the moving displacement of the AF moving part, and the y-axis represents the size of mutual inductance.

Referring to FIG. 14, as the separation distance between the first coil 120 and the second coil 170 decreases due to the movement of the bobbin 110, the mutual inductance between the first coil 120 and the second coil 170 decreases. It may increase, and as the mutual inductance increases, the induced voltage induced in the second coil 170 may increase.

On the other hand, as the separation distance between the first coil 120 and the second coil 170 increases, the mutual inductance between the first coil 120 and the second coil 170 decreases, and as the mutual inductance decreases, the second coil The induced voltage induced in (170) can be reduced.

In this way, based on the magnitude of the induced voltage generated in the second coil 170, the displacement of the AF movable unit can be detected.

In general, AF (Auto Focus) feedback control requires a position sensor that can detect the displacement of the AF moving part, for example, the bobbin, and a separate power connection structure to drive the position sensor, increasing the price of the lens driving device. And difficulties in manufacturing operations may arise.

Additionally, the linear section (hereinafter referred to as “first linear section”) of the graph between the moving distance of the bobbin and the magnetic flux of the magnet detected by the position sensor may be restricted by the positional relationship between the magnet and the position sensor.

Since the embodiment does not require a separate position sensor to detect the displacement of the bobbin 110, the cost of the lens driving device can be reduced and the ease of manufacturing work can be improved.

In addition, since mutual induction between the first coil 120 and the second coil 170 is used, the linear section of the graph between the moving distance of the bobbin 110 and the induced voltage of the second coil 170 compared to the first linear section can increase. As a result, the embodiment can secure linearity in a wide range, improve the process defect rate, and perform more accurate AF feedback control.

Next, the base 210, the support member 220, the third coil 230, the position sensor 240, and the circuit board 250 will be described.

The base 210 may be combined with the cover member 300 to form an accommodating space for the bobbin 110 and the housing 140. The base 210 may have an opening corresponding to the opening of the bobbin 110 described above and/or the opening of the housing 140, and may have a shape that matches or corresponds to the cover member 300, for example, a square shape. You can.

The base 210 is located below the bobbin 110 and the housing 140, and may have a support groove or support portion on the side opposite to the portion where the terminal surface 253 of the circuit board 250 is formed.

An edge or corner of the base 210 may have a groove 212. When the edge or corner of the cover member 300 has a protruding shape, the protrusion of the cover member 300 may be fastened to the base 210 in the groove 212.

The base 210 is recessed from the upper surface and may be provided with position sensor seating grooves 215-1 and 215-2 in which the position sensors 240a and 240b are disposed.

The position sensor 240 is a position sensor for OIS (Optical Image Stabilizer) feedback and may include a first position sensor 240a and a second position sensor 240b.

The first and second position sensors 240a and 240b may be disposed in the position sensor seating grooves 215a and 215b of the base 210 located below the circuit board 250, and are connected to the circuit board 250. Can be electrically connected. For example, the first and second position sensors 240a and 240b may be mounted on the back of the circuit board.

For example, the first and second position sensors 215a and 215b may each receive a driving signal from the circuit board 250, and the output of each of the first and second position sensors 215a and 215b may be output from the circuit. It may be output to the substrate 250.

The first and second position sensors 240a and 240b are capable of detecting the displacement of the housing 140 with respect to the base 210 in a direction (e.g., X-axis or Y-axis) perpendicular to the optical axis (e.g., Z-axis). You can. For example, when the housing 140 moves in the second or/and third direction, the first and second position sensors 240a and 240b detect changes in magnetic force emitted from the magnet 130, and the detected result A signal can be output according to .

For example, the first and second position sensors 240a and 240b may be implemented as a Hall sensor alone or as a driver including a Hall sensor, but this is an example and may detect position in addition to magnetic force. Any sensor that can do this is possible.

The third coil 230 may be placed on the upper side of the circuit board 250, and the first and second position sensors 240a and 240b may be placed on the lower side.

Circuit board 250 may be disposed on the upper surface of base 210 and may have an opening corresponding to an opening in bobbin 110, an opening in housing 140, or/and an opening in base 210. there is.

The circuit board 250 may include at least one terminal surface 253 bent from the upper surface, and a plurality of terminals 251 provided on the terminal surface 253. For example, the circuit board 250 may have terminal surfaces provided on each of two opposing sides of the upper surface, but is not limited to this.

For example, the circuit board 250 includes first terminals electrically connected to the support members 220-1 to 220-4 connected to the first coil 120 and the second coil 170, and a third coil. It may include second terminals electrically connected to the terminals 230-1 to 230-4.

The circuit board 250 may be a flexible printed circuit board (FPCB), but is not limited thereto, and the terminals of the circuit board 1250 may be formed using a surface electrode method on the surface of the PCB or the base 210. It may be possible.

The circuit board 250 may include holes 250a1 and 250a2 through which the support members 220-1 to 220-4 can pass. The support members 220 - 1 to 220 - 4 may be electrically connected to a circuit pattern disposed on the bottom of the circuit board 250 through the holes 250a1 and 250a2 of the circuit board 250 through soldering, etc.

Additionally, in another embodiment, the circuit board 250 may not have the holes 250a1 and 250a2, and the support members 220-1 to 220-4 may be a circuit pattern formed on the upper surface of the circuit board 250 or It can also be electrically connected to the pad through soldering, etc.

The circuit board 250 may further include a hole that engages with a protrusion provided on the upper surface of the base 210 through heat fusion or an adhesive member.

The third coil 230 is disposed on the upper surface of the circuit board 250 in correspondence with or aligned with the magnet 130. The number of third coils 230 may be one or more and may be the same as the number of magnets 130, but is not limited thereto.

For example, the third coil 230 may include a plurality of OIS coils 230-1 to 230-4 formed in a separate substrate 231 from the circuit board 250, but is not limited thereto. , In another embodiment, the OIS coils 230-1 to 230-4 may be arranged to be spaced apart from each other on the circuit board 250 without a separate board.

The substrate 231 on which the third coil 230 is formed may have an escape groove 23 at each corner through which the support members 220-1 to 220-4 can pass.

The OIS coils 230-1 to 230-4 may be electrically connected to the circuit board 250. A driving signal, for example, a driving current, may be provided to each of the OIS coils 230-1 to 230-4.

The magnets 130-1 to 130-4 and the OIS coils 230-1 to 230-4 may face each other or be aligned in a direction parallel to the optical axis, and the magnet 130 and the driving signal are applied. The housing 140 may move in the second and/or third directions by electromagnetic force resulting from the interaction between the OIS coils 230-1 to 230-4, and the movement of the housing 140 is controlled to correct hand shake. This can be done.

Next, the support member 220 will be described.

One end of the support member 220 may be coupled to the upper elastic member 150 by soldering or a conductive adhesive member, and the other end of the support member 220 may be coupled to the circuit board 250, but is not limited thereto. No, in another embodiment, the other end of the support member 220 may be coupled to the circuit member 231 and/or the base 210.

There may be a plurality of support members 220, and the plurality of support members 220-1 to 220-4 may be positioned to correspond to the second sides 142 of the housing 140.

Each of the plurality of support members 220-1 to 220-4 is coupled to the first coupling portion 520 of a corresponding one of the upper springs 150-1 to 150-4 through solder 901. and may be electrically connected to the first coupling portion 520.

The plurality of support members 220-1 to 220-4 may support the bobbin 110 and the housing 140 so that the bobbin 110 and the housing 140 can move in a direction perpendicular to the first direction. .

For example, each of the plurality of support members 220 - 1 to 220 - 4 may be disposed adjacent to a corresponding one of the four second sides 142 . For example, the support members 220-1 to 220-4 may be located inside the ring-shaped second coil 170.

In FIG. 9, one support member is disposed on each of the second sides of the housing 140, but the present invention is not limited thereto.

In another embodiment, two or more support members may be disposed on each of the second sides of the housing 140, and the upper elastic member 150 is separated from and spaced apart from each other on at least one of the second sides of the housing 140. It may also include two or more upper elastic members. For example, two support members disposed on a second side of the housing 140 may be connected to a corresponding one of two separate upper elastic members disposed on a second side.

Each of the plurality of support members 220-1 to 220-4 may be spaced apart from the housing 140 and is not fixed to the housing 140, but is attached to the upper springs 150-1 to 150-4. It may be directly connected to the first coupling portion 520 of the first outer frame 152.

In another embodiment, the support member 220 may be disposed in the form of a leaf spring on the side 141 of the housing 140.

A driving signal may be transmitted from the circuit board 250 to the first coil 120 through a plurality of support members 220-1 to 220-4 and upper springs 150-1 to 150-4, The induced voltage output from the second coil 170 may be transmitted to the circuit board 250.

For example, the induced voltage of the second coil 170 is generated through the second and third upper springs 150-2 and 150-3, and the second and third support members 220-2 and 220-3. It may be delivered to the circuit board 250. In addition, the driving signal signal is transmitted from the circuit board 250 to the first coil 120 through the first and fourth upper springs 150-1,150-4 and the first and fourth support members 220-1,220-4. ) can be transmitted.

The plurality of support members 220-1 to 220-4 may be formed as separate members from the upper elastic member 1150, and may be supported by elasticity, such as a leaf spring or coil. It can be implemented with springs (coil springs), suspension wires, etc. Additionally, in another embodiment, the support members 220-1 to 220-4 may be formed integrally with the upper elastic member 150.

FIG. 11 shows a top view of FIG. 3 , FIG. 12A shows a perspective view of the first dotted portion 41 of FIG. 11 , and FIG. 12B shows a perspective view of the second dotted portion 42 of FIG. 11 .

Referring to FIGS. 11, 12A, and 12B, a portion of the second coil 170 is wound around the first protrusion 31a of the housing 140 at least once, and is wound on the upper portion by the first solder portion 71. It may be coupled to the second region S2 of the outer portion 510a of the spring (eg, 150-1) and electrically connected to the upper spring (eg, 150-1).

In addition, another part of the second coil 170 is wound around the second protrusion 31b of the housing 140 at least once, and is connected to the first coil of the upper spring (e.g., 150-2) by the second solder portion 72. It may be coupled to the second area S2 of the outer portion 510d of the outer frame 152 and electrically connected to the upper spring (eg, 150-2).

A portion of the second coil 170 disposed in the housing 140 is wound around the first protrusion 31a of the housing 140 at least once and is connected to the first outer frame 152 of the upper spring 150-1. It may include an extending first extension line 17f, and a first solder portion 71 may be disposed on the first extension line 17f and the first outer frame 152 of the first upper spring 150-1. And, the first extension line 17f and the first outer frame 152 of the upper spring (eg, 150-1) may be electrically connected to each other by the first solder portion 71.

In addition, another part of the second coil 170 disposed in the housing 140 is wound around the second protrusion 31b of the housing 140 at least once, and the first outer frame 152 of the upper spring 150-2 ) may include a second extension line (17g) extending to the And, the second extension line 17g and the first outer frame 152 of the upper spring 150-2 may be electrically connected to each other by the second solder portion 72.

The reason for winding both ends of the second coil 170 around the first and second protrusions 31a and 31b of the housing 140 is to connect one end of the second coil 170 and the first upper spring 150 without separate line arrangement. This is to solder the first outer frame of -1) and solder the other end of the second coil 170 and the first outer frame of the second upper spring 150-2. In addition, by stably and firmly fixing both ends of the second coil 170 to the first and second protrusions 31a and 31b of the housing 140, disconnection of the second coil 170 due to impact can be prevented. , This is to improve solderability by preventing movement or shaking of the second coil 170 during soldering.

For example, the second coil 170 includes a first portion 17a disposed on the outer surface of the housing 140 (e.g., a seating groove 148 for the second coil) and a first protrusion 31a of the housing 140. A second part (17b) wound around the second part (17b), a third part (17c) connecting one end of the first part (17a) and the second part (17b), and a third part (17c) wound around the second protrusion (31b) of the housing 140. A fourth part (17d), a fifth part (17e) connecting the other end of the first part (17a) and the fourth part (17d), a sixth part (17f) extending from one end of the second part (17b), And it may include a seventh part (17g) extending from one end of the fourth part (17d).

The third portion 17c of the second coil 170 may be disposed in the groove 61 located on the first side of the housing 140, and the fifth portion 17e of the second coil 170 may be disposed in the groove 61 located on the first side of the housing 140. It may be placed in the groove 61 located on the third side of 140.

The first part 17a is a part where an induced voltage is generated by interaction with the first coil 120 and can be expressed as the “main body” of the second coil 170, and the second part ( 17b) may be expressed as a “first winding member,” the third part 17c may be expressed as a “first connection line,” and the fourth part 17d may be expressed as a “first connection line.” 2 winding part”, and the fifth part 17e can be expressed as a “second connection line”.

For example, the first solder portion 71 may be spaced apart from the second portion 17b of the second coil 170, and the second solder portion 72 may be spaced apart from the fourth portion 17d of the second coil 170. can be separated from Because of this, the length of the second coil 170 may be further increased.

The second coil 170 may include a conductive wire and a covering (e.g., an insulating portion) surrounding the conductive wire, and the conductive wires of the first extension line 17f and the second extension line 17g of the second coil 170. May be exposed from silver coating. This is achieved through connection between the exposed conductive wire portion of the first extension line 17f (or the second extension line 17g) and the first solder portion 71 (or the second solder portion 72), thereby forming the second coil 170- 1) and the first and second lower springs 160-1 and 160-2.

Since the second coil 170 extends to the second region S2 of the second coupling portion 510-1 of the first outer frame of the upper springs 150-2 and 150-3, the second coil ( 170) can be increased, and as the length of the second coil 170 increases, the resistance of the second coil 170 can also increase. As a result, the induced voltage induced in the second coil 170 The size of can be increased, so the sensitivity for detecting the position of the bobbin 110 for AF feedback driving can be improved.

In another embodiment, the first and second extension lines 17f and 17g are omitted, the second coil 170 may include first to fifth portions 17a to 17e, and the first solder portion may include the second solder portion. It may be disposed on the second portion 17b of the coil and the second outer frame of the upper spring 150-2, and the second solder portion may be disposed on the fourth portion of the second coil and the second outer frame of the upper spring 150-3. It can be placed on an outer frame. At this time, the conductive wires of the second and fourth parts 17b and 17d of the second coil may be exposed from the covering, and the second coil and the upper springs 150-2 and 150 may be connected to each other by the first and second solder parts. -3) can be electrically connected.

In another embodiment, the second coil 170 includes a first portion 17a disposed on the outer surface of the housing 140 (e.g., a seating groove 148 for the second coil), a first protrusion of the housing 140 ( A second part (17b) wound around the second part (17b) of the housing 140, a third part (17d) wound around the second protrusion (31b) of the housing 140, and one end of the first part (17a) connected to the second part (17b). A first connection line (or first connection part, 17c), a second connection line (or second connection part, 17e) connecting the other end of the first part (17a) and the third part (17d), and a second part (17b) It may include a first extension portion 17f extending from one end of the fourth portion 17d, and a second extension portion 17g extending from one end of the fourth portion 17d.

The embodiment shown in FIGS. 1 to 13 uses an induced voltage due to mutual induction between the first coil 120 and the second coil 170 for AF feedback operation. However, in other embodiments, the second coil 170 may be omitted in FIGS. 1 to 13 for AF feedback operation, and other embodiments may include an AF position sensor disposed in the housing 140 or the bobbin 110. You can. At this time, the housing 140 or the bobbin 110 may be provided with a seating groove in which the AF position sensor is seated. Additionally, another embodiment may further include a circuit board disposed on the housing 140 or the bobbin 110 for mounting the AF position sensor.

Additionally, another embodiment may further include a separate sensing magnet corresponding to the AF position sensor in a direction perpendicular to the optical axis. When the AF position sensor is placed on the bobbin 110, the sensing magnet can be placed on the housing 140, and when the AF position sensor is placed on the housing 140, the sensing magnet can be placed on the bobbin 110. there is.

The AF position sensor may be electrically connected to the circuit board 250 through a plurality of upper springs or/and at least one lower spring, and support members 220-1 to 220-4.

The AF position sensor may be implemented in the form of a driver including a Hall sensor, or may be implemented solely as a position detection sensor such as a Hall sensor.

The AF position sensor has two input terminals from which a driving signal is provided from the circuit board 250 and two output terminals that output a signal according to the result of detecting the strength of the magnetic force of the magnet or/and the sensing magnet according to the movement of the AF moving part. It may include output terminals.

Meanwhile, the lens driving device according to the above-described embodiment can be used in various fields, for example, camera modules or optical devices.

For example, the lens driving device 100 according to an embodiment forms an image of an object in space by using the characteristics of light, such as reflection, refraction, absorption, interference, and diffraction, and aims to increase the visual power of the eye, It may be included in an optical instrument for the purpose of recording and reproducing images by a lens, or for optical measurement, propagation or transmission of images, etc. For example, an optical device according to an embodiment may include a smartphone and a portable terminal equipped with a camera.

Figure 15 shows an exploded perspective view of the camera module 200 according to an embodiment.

Referring to FIG. 15, the camera module 200 includes a lens or lens barrel 400, a lens driving device 100, an adhesive member 612, a filter 610, a first holder 600, and a second holder 800. ), an image sensor 810, a motion sensor 820, a control unit 830, and a connector 840.

A lens or lens barrel (lens barrel, 400) may be mounted on the bobbin 110 of the lens driving device 100.

The first holder 600 may be placed below the base 210 of the lens driving device 100. The filter 610 is mounted on the first holder 600, and the first holder 600 may have a protrusion 500 on which the filter 610 is seated.

The adhesive member 612 may couple or attach the base 210 of the lens driving device 100 to the first holder 600. In addition to the adhesive role described above, the adhesive member 612 may also serve to prevent foreign substances from entering the lens driving device 100.

For example, the adhesive member 612 may be epoxy, thermosetting adhesive, ultraviolet curing adhesive, etc.

The filter 610 may serve to block light of a specific frequency band from light passing through the lens barrel 400 from entering the image sensor 810. The filter 610 may be an infrared blocking filter, but is not limited thereto. At this time, the filter 610 may be arranged parallel to the x-y plane.

An opening may be formed in a portion of the first holder 600 where the filter 610 is mounted to allow light passing through the filter 610 to enter the image sensor 810.

The second holder 800 is disposed below the first holder 600, and the image sensor 810 may be mounted on the second holder 600. The image sensor 810 is a site where light passing through the filter 610 is incident and an image included in the light is formed.

The second holder 800 may be equipped with various circuits, elements, and control units to convert the image formed on the image sensor 810 into an electrical signal and transmit it to an external device.

The second holder 800 can be implemented as a circuit board on which an image sensor can be mounted, a circuit pattern can be formed, and various elements can be combined.

The image sensor 810 may receive an image included in light incident through the lens driving device 100 and convert the received image into an electrical signal.

The filter 610 and the image sensor 810 may be arranged to be spaced apart from each other in the first direction.

The motion sensor 820 is mounted on the second holder 800 and can be electrically connected to the control unit 830 through a circuit pattern provided on the second holder 800.

The motion sensor 820 outputs rotational angular velocity information resulting from the movement of the camera module 200. The motion sensor 820 may be implemented as a 2-axis or 3-axis gyro sensor, or an angular velocity sensor.

The control unit 830 is mounted on the second holder 800. The second holder 800 may be electrically connected to the lens driving device 100. For example, the second holder 800 may be electrically connected to the first coil 120 and the second coils 170 and 170-1 of the lens driving device 100.

For example, a driving signal may be provided to the first coil 120 through the second holder 800, and the induced voltage of the second coils 170 and 170-1 may be transmitted to the second holder 800. . For example, the induced voltage of the second coil 230 may be received by the control unit 830.

The connector 840 is electrically connected to the second holder 800 and may have a port for electrical connection to an external device.

The image sensor 810 includes a pixel array unit including a plurality of unit pixels, a sensing control unit that provides control signals for controlling transistors included in the unit pixels, and a pixel output from the unit pixels of the pixel array unit 905. It may include an analog-to-digital converter that converts an analog signal into a digital signal.

FIG. 16 shows a perspective view of a portable terminal 200A according to an embodiment, and FIG. 18 shows a configuration diagram of the portable terminal 200A shown in FIG. 17.

16 and 17, the portable terminal (200A, hereinafter referred to as “terminal”) includes a body 850, a wireless communication unit 710, an A/V input unit 720, a sensing unit 740, and an input/output unit 720. It may include an output unit 750, a memory unit 760, an interface unit 770, a control unit 780, and a power supply unit 790.

The body 850 shown in FIG. 16 has a bar shape, but is not limited to this, and can be a slide type, folder type, or swing type in which two or more sub-bodies are coupled to enable relative movement. It may have various structures such as , swirl type, etc. The body 850 may include a case (casing, housing, cover, etc.) that forms the exterior.

The wireless communication unit 710 may be configured to include one or more modules that enable wireless communication between the terminal 200A and a wireless communication system or between the terminal 200A and the network where the terminal 200A is located. For example, the wireless communication unit 710 may be configured to include a broadcast reception module 711, a mobile communication module 712, a wireless Internet module 713, a short-range communication module 714, and a location information module 715. there is.

The A/V (Audio/Video) input unit 720 is for inputting audio or video signals and may include a camera 721 and a microphone 722.

The camera 721 may include a camera module 200 according to an embodiment.

The sensing unit 740 monitors the current state of the terminal 200A, such as the open/closed state of the terminal 200A, the location of the terminal 200A, presence or absence of user contact, the direction of the terminal 200A, acceleration/deceleration of the terminal 200A, etc. It is possible to detect and generate a sensing signal to control the operation of the terminal 200A.

The input/output unit 750 is for generating input or output related to vision, hearing, or tactile sensation. The input/output unit 750 can generate input data for controlling the operation of the terminal 200A and can also display information processed by the terminal 200A.

The input/output unit 750 may include a key pad unit 730, a display module 751, a sound output module 752, and a touch screen panel 753. The key pad unit 730 can generate input data through key pad input.

The display module 751 may include a plurality of pixels whose colors change according to electrical signals.

The audio output module 752 outputs audio data received from the wireless communication unit 710 in call signal reception, call mode, recording mode, voice recognition mode, or broadcast reception mode, or stored in the memory unit 760. Audio data can be output.

The touch screen panel 753 can convert the change in capacitance that occurs due to the user's touch to a specific area of the touch screen into an electrical input signal.

The memory unit 760 may store a program for processing and controlling the control unit 780. For example, the memory unit 760 may store images captured by the camera 721, such as photos or videos.

The interface unit 770 receives data from an external device, receives power and transmits it to each component inside the terminal 200A, or transmits data inside the terminal 200A to an external device.

The controller 780 can control the overall operation of the terminal 200A. For example, the control unit 780 may perform related control and processing for voice calls, data communications, video calls, etc.

The control unit 780 may include a multimedia module 781 for playing multimedia, a camera control unit 782 for controlling the camera, and a display control unit 783 for controlling the input/output unit 750.

The power supply unit 790 can receive external power or internal power under the control of the control unit 780 and supply power necessary for the operation of each component.

The features, structures, effects, etc. described in the embodiments above are included in at least one embodiment of the present invention and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, etc. illustrated in each embodiment can be combined or modified and implemented in other embodiments by a person with ordinary knowledge in the field to which the embodiments belong. Therefore, contents related to such combinations and modifications should be interpreted as being included in the scope of the embodiments of the present invention.

Claims (20)

housing;
a bobbin disposed within the housing;
A magnet disposed in the housing;
a first coil disposed on the bobbin and facing the magnet;
an upper elastic member including an inner frame coupled to the top of the bobbin, an outer frame coupled to the top of the housing, and a frame connection portion connecting the inner frame and the outer frame;
a third coil facing the magnet in the optical axis direction; and
It includes a support member including one end coupled to the upper elastic member,
The upper elastic member is,
an outer portion coupled to the upper portion of the housing;
a first coupling portion coupled to the one end of the support member; and
It includes a first connection part connecting the outer part and the first coupling part,
A lens driving device wherein the width of the first connection portion is smaller than the width of the outer portion. According to paragraph 1,
A lens driving device including a damping member disposed between the outer peripheral surface of the bobbin and the inner peripheral surface of the housing. According to paragraph 1,
The bobbin is a lens driving device including a protrusion coupled to the inner frame of the upper elastic member. According to paragraph 1,
It includes a base disposed below the third coil,
A lens driving device wherein the other end of the support member is fixed to the base. According to paragraph 1,
A lens driving device including a lower elastic member coupled to a lower portion of the bobbin and a lower portion of the housing. According to paragraph 1,
The outer portion includes a second coupling portion coupled to one region of the housing, a third coupling portion coupled to another region of the housing, and a second coupling portion connecting the second coupling portion and the third coupling portion. Lens driving device. According to clause 6,
The first connection part includes a third connection part connecting the second coupling part and the first coupling part, and a fourth coupling part connecting the third coupling part and the first coupling part. In clause 7,
A lens driving device in which the width of the third connection portion and the width of the fourth connection portion are smaller than the width of the outer portion. According to clause 6,
When viewed from the top, the second connection portion is a lens driving device including a convex shape from the center of the housing toward a corner of the housing. In clause 7,
A lens driving device wherein the third connection part and the fourth connection part are smaller than the width of the second connection part. According to paragraph 1,
The first connection unit is a lens driving device including a bent portion that is bent at least once. According to paragraph 1,
A lens driving device wherein the support member includes a wire disposed at each of four corners of the housing. According to paragraph 1,
The housing includes at least one protrusion coupled to the outer frame of the upper elastic member,
The outer frame of the upper elastic member includes at least one hole coupled to the at least one protrusion of the housing. According to paragraph 1,
The first coil is electrically connected to the upper elastic member,
A lens driving device in which a driving signal is applied to the first coil. According to paragraph 4,
A lens driving device including a position sensor disposed on the base and detecting displacement of the housing by detecting a magnetic field of the magnet. According to paragraph 1,
When viewed from above, the outer portion is left and right asymmetric with respect to the reference line,
The reference line is a straight line passing through the center of the housing and a corner of the housing. According to paragraph 1,
The first coil is arranged to surround the outer peripheral surface of the bobbin,
The magnet is disposed on each of four sides of the housing,
The third coil is a lens driving device including a substrate and coils formed on the substrate. housing;
a bobbin disposed within the housing;
A magnet disposed in the housing;
a first coil disposed on the bobbin and facing the magnet;
an upper elastic member coupled to the upper part of the bobbin and the upper part of the housing;
a third coil facing the magnet in the optical axis direction; and
It includes a support member including one end coupled to the upper elastic member,
The upper elastic member is,
a first coupling portion coupled to the one end of the support member;
an outer portion including a second coupling portion coupled to one region of the housing and a third coupling portion coupled to another region of the housing;
a first connection portion including the outer portion and the first connection portion; and
It includes a second connection part connecting the second coupling part and the third coupling part,
The first connection part includes a third connection part connecting the first coupling part and the second coupling part, and a fourth coupling part connecting the first coupling part and the third coupling part. According to clause 18,
The first connection portion includes a portion having a width smaller than the width of the second connection portion,
A lens driving device in which the first connection part is disposed outside the second connection part based on the center of the housing. lens;
A lens driving device according to any one of claims 1 to 19; and
A camera module containing an image sensor.

Images