JP2009216977A - Electrooptical device and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrooptical device and electronic equipment capable of securing excellent display luminance by surely preventing floating of a display panel while reducung the size and cost. <P>SOLUTION: The electrooptical device includes an electrooptical panel 10 which has electrooptical material, a frame 40 in which the electrooptical panel 10 is housed, a wiring board 20 whose one end is connected to the electrooptical panel 10 and which is fixed to the back surface of the frame 40 by going round by a side end face 42 of the frame 40, and an engaging member 60 which is engaged with the frame 40 in such a state that at least one surface contacts the wiring board 20. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electro-optical device and an electronic apparatus.

Currently, in various electronic devices such as a mobile phone and a portable information terminal, a liquid crystal display device is used as a display unit for visually displaying various information.
As an example of such a liquid crystal display device, a liquid crystal display device including a liquid crystal panel which is an example of a display panel, a backlight (illumination device), and a frame for accommodating the liquid crystal panel and the backlight is known. .

  The liquid crystal panel includes a pair of substrates, a sealing material formed between the pair of substrates along the outer periphery of the substrate, and a liquid crystal disposed in a region surrounded by the pair of substrates and the sealing material. It is what is done. The backlight generally includes a light guide plate made of a light-transmitting resin and a light source that generates light. As such a light source, for example, an LED (Light Emitting Diode), a cold cathode tube, or the like can be used. Light emitted from the light source is introduced into the light guide plate, and then travels through the light guide plate. The light is emitted from the light exit surface of the light plate to the liquid crystal layer of the liquid crystal display device for display.

  The liquid crystal panel is connected to a wiring board having flexibility, such as an FPC (Flexible Printed Circuit). In this wiring board, for example, a driving circuit and an input terminal necessary for driving a liquid crystal panel are formed. By connecting an external power source and various external devices to the input terminal, the wiring board A drive signal and electric power can be supplied to the liquid crystal panel via this. In some cases, an LED as a light source is mounted and a liquid crystal panel can be irradiated with transmitted light by a light guide plate or a prism sheet. Mounting the light source (LED) on the wiring board is beneficial in terms of cost.

  In general, such a wiring board has a configuration in which it is linearly drawn from a liquid crystal panel (display panel) and bent for the purpose of reducing the size of the liquid crystal display device and increasing the degree of design freedom. Used in a state where bending stress is generated. In addition, the liquid crystal panel is housed in the frame by being attached to the backlight with an adhesive tape having light shielding properties. However, as the light shielding region of the liquid crystal panel is reduced, the liquid crystal panel is used as a light shielding region. The surface area of adhesive tape is also getting smaller.

  Therefore, as shown in FIG. 6, since the reaction force of the wiring substrate 101 is generated in a direction substantially perpendicular to the display surface of the liquid crystal panel 103, the liquid crystal panel 103 and the backlight 104 are bonded with the adhesive force of the adhesive tape 102 as described above. And the liquid crystal panel 103 may be peeled off from the backlight 104 and lifted up from the frame 105.

  As described above, when the liquid crystal panel 103 is peeled off from the backlight 104, a problem such as uneven surface luminance of the liquid crystal display surface occurs. Further, when the liquid crystal panel 103 is lifted from the frame 105, the positional relationship between the backlight 104 and the liquid crystal panel 103 is changed, so that the light of the backlight 104 cannot be used effectively, and the display quality of the liquid crystal display device 100 is increased. There is a problem that will decrease.

Therefore, as shown in FIG. 7, a configuration has been considered in which the reaction force of the wiring board 101 is suppressed by providing the ribs 111 and the like and pressing the liquid crystal panel 103 and the wiring board 101 (see, for example, Patent Document 1). ).
JP 2006-98811 A

However, it is often insufficient to hold only the wiring board against the floating of the liquid crystal panel. Further, the structure for holding the liquid crystal panel may cause the panel to crack due to the ribs or the like strongly pressing the liquid crystal panel upon impact during dropping. Furthermore, a structure in which the polarizing plate is pressed by a rib or the like has been proposed. Such a structure is effective for the floating of the liquid crystal panel, but the size of the outer shape becomes large, and it cannot meet the current customer needs for a compact structure. For this reason, there is a demand for a structure in which the outer shape is stored compactly and the liquid crystal panel is reliably prevented from floating.
In addition, due to variations in the length of the wiring board and the dimensions (tolerances) of the frame, there has been a problem that it becomes difficult to incorporate ribs or the like, and the pressing of the wiring board or the like by the ribs becomes weak.

  Furthermore, a liquid crystal display device using an insert-molded frame that can be thinned by improving the strength of the frame has been proposed. Specifically, in the liquid crystal display device 200 using the insert-molded frame, as shown in FIG. 8, the frame 205 is integrated with the metal plate 201 that forms part of the bottom and side walls, and the metal plate 201. And a frame-shaped resin portion 202. The wiring board 203 is fixed to the back surface around the side surface 205 a of the frame 205. Therefore, the wiring board 203 is used in a state where bending stress is generated, and it is difficult to suppress the liquid crystal panel 210 from floating. Further, since the wiring board 203 goes around the side surface 205 a of the frame 205, the LEDs cannot be mounted on the wiring board 203. As a result, the LEDs are arranged inside the frame 205, and it becomes necessary to provide an LED wiring board 204 different from the wiring board 203. Therefore, the cost increases and it is difficult to reduce the size of the entire apparatus.

  The present invention has been made in order to solve the above-described problems, and it is possible to ensure good display brightness by reliably preventing the display panel from floating while reducing the size and cost. An object of the present invention is to provide an electro-optical device and an electronic apparatus.

In order to achieve the above object, the present invention provides the following means.
The electro-optical device of the present invention includes an electro-optical panel having an electro-optical material, a frame that accommodates the electro-optical panel, and one end portion connected to the electro-optical panel, and wrapping around a side end surface of the frame. A wiring board fixed to the back surface, and an engagement member engaged with the frame in a state where at least one surface is in contact with the wiring board.

In the electro-optical device according to the present invention, since the engaging member is engaged with at least one surface in contact with the wiring board, the bending stress of the wiring board (reaction force that the wiring board tries to return to the original state). ) Can be suppressed from acting on the electro-optical panel. As described above, since the stress applied to the bent portion of the wiring board can be relaxed, it is possible to prevent the electro-optical panel from floating from the frame. Therefore, it is possible to reliably prevent the electro-optical panel from being lifted, to enable good display without unevenness in luminance, and to maintain the display quality of the image for a long period.
Further, conventionally, there is a risk that the pressing of the wiring board by the fixing portion may be weak due to variations in the dimensions (tolerances) of the frame, but the present invention is an engaging member according to the shape and size of the frame and the thickness of the wiring board. Since the bending stress of the wiring board can be reduced by engaging the frame with the frame, the electro-optical panel can be prevented from floating from the frame.
Further, since the wiring board goes around the side end surface of the frame and is fixed to the back surface of the frame, a light source for illuminating the electro-optical panel can be mounted on the wiring board, thereby reducing the size and cost of the entire apparatus. Can be achieved.

  In the electro-optical device according to the aspect of the invention, it is preferable that the frame is configured by a metal portion that constitutes at least a bottom portion of the frame and a resin portion that is integrated with the metal portion.

In recent years, an electro-optical device has been proposed that can be thinned by improving the strength of the frame. However, the thinned electro-optical device does not have sufficient strength against twisting, bending, dropping, vibration, and the like, and there is a problem that it becomes difficult to satisfy the surface strength requirement as the thickness is reduced. In the electro-optical device according to the aspect of the invention, the frame includes a metal portion that forms a bottom portion of the frame and a resin portion that is integrated with the metal portion. As a result, the mechanical strength of the electro-optical device against bending and twisting forces can be improved.
Also, when the frame is composed of a metal part and a resin part, it is difficult to form an opening on the bottom surface of the frame, so a light source is mounted on the wiring board and the light source is arranged from the back side of the frame. I can't. However, since the electro-optical device of the present invention has a structure in which an engaging member is fitted into the frame and the wiring board is fixed, it is possible to mount a light source on the wiring board and arrange the light source on the back side of the electro-optical panel. Therefore, the cost can be reduced.

  In the electro-optical device according to the aspect of the invention, it is preferable that the frame accommodating the electro-optical panel and the engaging member are engaged and integrated by a locking portion.

  In the electro-optical device according to the present invention, the frame for housing the electro-optical panel and the engaging member are engaged and integrated by the locking portion, so that the entire device can be thinned and the machine of the electro-optical device can be realized. Strength can be improved.

  In the electro-optical device according to the aspect of the invention, it is preferable that the one end portion side of the wiring board is in contact with an engaging member.

  The electro-optical device according to the present invention can most effectively prevent the electro-optical panel from floating from the frame because one end of the wiring board is in contact with the engaging member.

  In the electro-optical device according to the aspect of the invention, the side end surface of the frame may have a curved surface, the wiring board may have a curved portion along the side end surface of the frame, and the wiring board may be brought into contact with the engagement member. Is preferably disposed with a gap between the frame and the side end surface.

  The electro-optical device according to the present invention can maintain an appropriate gap between the side end face of the frame and the connection portion of the wiring board, thereby efficiently relieving the stress of the wiring board and preventing the electro-optical panel from floating. be able to. In addition, this gap prevents excessive contact between the side end face of the frame and the connection portion, thereby preventing disconnection of the wiring.

  In the electro-optical device according to the aspect of the invention, it is preferable that at least a portion of the engagement member that is engaged with the frame is a rigid member.

  In the electro-optical device according to the present invention, at least a portion of the engaging member that is engaged with the frame is formed of a rigid member, and thus the engaging member is firmly fixed to the frame. Therefore, it is possible to increase the strength against impact and the like while reducing the thickness of the entire apparatus.

  In the electro-optical device according to the aspect of the invention, it is preferable that the engagement member includes a metal and is engaged with the resin portion of the frame.

  In the electro-optical device according to the invention, the engaging member is made of metal and is engaged with the resin portion of the frame. As a result, the resin portion of the frame can be easily processed into a shape that can be engaged with the engaging member, so that productivity can be improved.

According to another aspect of the invention, an electro-optical device includes the electro-optical device described above.
According to the electronic apparatus of the present invention, since the above-described electro-optical device is provided, it is possible to display a high-quality and reliable image without luminance unevenness.

  Hereinafter, embodiments of an electro-optical device and an electronic apparatus according to the invention will be described with reference to the drawings. In the following drawings, the scale of each member is appropriately changed in order to make each member a recognizable size.

[One Embodiment]
Hereinafter, an embodiment of the electro-optical device of the invention will be described.
FIG. 1 is a perspective view showing a state in which the engaging member of the liquid crystal display device of the present embodiment is engaged, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. FIG. 4 is a perspective view of the display device viewed from the back side, and FIG. 4 is a perspective view showing a state before the engagement member is engaged with the liquid crystal display device.

  As shown in FIGS. 1 and 2, the liquid crystal display device (electro-optical device) 1 includes a liquid crystal panel (electro-optical panel) 10 and an FPC (Flexible Printed Circuit) substrate (wiring substrate) connected to the liquid crystal panel 10. 20, a lighting device 30 that illuminates the liquid crystal panel 10, a frame 40 that houses the liquid crystal panel 10 and the lighting device 30, and an engaging member 60.

  As shown in FIG. 2, the liquid crystal panel 10 has a first substrate 11, a second substrate 12 having a protruding portion 12 a that protrudes from the first substrate 11, and the first substrate 11 and the second substrate 12. A liquid crystal layer (not shown) as an electro-optical material disposed in a space formed by the sealing material (not shown) provided on the peripheral edge of the substrate, the first substrate 11 and the second substrate 12 and the sealing material, A first polarizing plate 13 and a second polarizing plate 14 are provided so as to sandwich the first and second substrates 11 and 12. The first substrate 11 and the second substrate 12 are made of translucent glass, plastic, or the like.

  On the surface of the first substrate 11 facing the second substrate 12, for example, a stripe-shaped first transparent electrode made of a plurality of ITO (Indium · Tin Oxide) films is provided to cover the first transparent electrode. Thus, an alignment film made of polyimide or the like is formed. On the other hand, on the surface of the second substrate 12 facing the first substrate 11, for example, a plurality of ITO films made of a plurality of ITO films are provided so as to intersect the first transparent electrode. 2 An alignment film made of polyimide or the like is formed so as to cover the transparent electrode. Here, the first transparent electrode, the second transparent electrode, and the alignment film covering them are formed by a known technique and are not shown.

  Further, as shown in FIG. 2, a driving circuit 50 and an input terminal (not shown) necessary for driving the liquid crystal panel 10, for example, are formed on the projecting portion 12a. By connecting an external power source and various external devices, a driving signal and power can be supplied to the liquid crystal panel 10 via the FPC board 20.

  In the liquid crystal panel 10 having such a configuration, pixels are formed by the first transparent electrode and the second transparent electrode facing each other, and a liquid crystal layer sandwiched between them. And the optical characteristic of a liquid crystal layer is changed by selectively changing the voltage applied to each pixel, and the light irradiated from the illuminating device 30 is modulated by transmitting through this liquid crystal layer of each pixel. An image or the like can be displayed by modulating the light in this way, and the display area in the liquid crystal panel 10 is substantially equal to the display area V surrounded by the sealing material shown in FIG.

As shown in FIG. 2, the illumination device 30 includes an LED (light source) 31 that emits light, a light guide plate 32, a reflection plate 33, a diffusion plate 34, a first prism sheet 35, and a second prism sheet 36. The reflector plate 33, the light guide plate 32, the diffuser plate 34, the first prism sheet 35, and the second prism sheet 36 are arranged in this order toward the liquid crystal panel 10.
The illuminating device 30 and the liquid crystal panel 10 are bonded together via a double-sided light shielding sheet 37 that can be bonded on both sides. The double-sided light shielding sheet 37 has a light shielding property and prevents light leakage from the lighting device 30.
In the lighting device 30, the LED 31 is disposed in an opening 40 a formed in the frame 40.
As shown in FIG. 2, the liquid crystal panel 10 is bonded to the light guide plate 32 by a frame-shaped double-sided light shielding sheet 37. The double-sided light shielding sheet 37 also serves as a light shielding region of the liquid crystal panel 10.

  As shown in FIG. 2, the FPC board 20 includes a connection portion 21 and an electronic component mounting portion 22. The connection portion 21 is formed with wiring that is conductively connected to the input terminal disposed on the projecting portion 12a by ACF (conductive adhesive) or the like, and the electronic component mounting portion 22 is electrically connected to the wiring. A plurality of semiconductor devices 54 are arranged as circuit elements. In addition, LEDs 31 as a plurality of light source units are arranged on the back surface 20 c of the FPC board 20.

  The semiconductor device 54 supplies a control signal and power to the drive circuit 50 of the liquid crystal panel 10. Furthermore, wiring (not shown) for supplying a control signal, a power source, and the like from the outside to the semiconductor device 54 is formed on the back surface 20c of the FPC board 20. The FPC board 20 has an end of the connecting portion 21 opposite to the electronic component mounting portion 22 fixed to the protruding portion 12a by ACF or the like. The wiring of the FPC board 20 is conductively connected to the input terminal on the overhanging portion 12a by the conductive particles in the ACF.

The frame 40 is integrally formed by insert molding of a metal plate (metal part) 43 and a resin part 44, for example. Further, as shown in FIG. 1, the frame 40 accommodates the liquid crystal panel 10, and includes a metal plate 43 constituting a part of the bottom and side walls, and a frame-shaped resin portion integrated with the metal plate 43. 44. The metal plate 43 is not provided on the side end face 42 side of the frame 40, and is configured only by the resin portion 44. Further, the portion in the vicinity of the side end surface 42 of the side surfaces 47 a and 47 b adjacent to the side end surface 42 of the frame 40 is also composed of only the resin portion 44.
Further, the metal plate 43 is formed of a metal material such as beryllium copper or stainless steel, and the resin portion 44 is formed of a resin material such as polycarbonate.

  As shown in FIG. 2, the frame 40 has a recess 40c, which is a space formed by a metal plate 43 on the bottom surface and an internal resin portion 44, and the liquid crystal panel 10 and the lighting device 30 are accommodated in the recess 40c. ing. Moreover, as shown in FIG. 1, the latching claws 48 and 49 are provided in the resin part 44 of the side surfaces 47a and 47b of the frame 40, respectively.

Further, as shown in FIG. 3, a double-sided tape 45 is provided on the electronic component mounting unit 22. Then, when the liquid crystal display device 1 is assembled, the FPC board 20 that linearly extends from the liquid crystal panel 10 is curved, so that the electronic component mounting unit 22 goes around the side end surface 42 and is attached to the frame 40 by the double-sided tape 45. It is fixed to the back surface 40b.
Bending stress is generated in the FPC board 20 bent in this way. Furthermore, the area of the light shielding region of the liquid crystal panel 10 is very small, and the surface area of the double-sided light shielding sheet 37 is also small. Therefore, it is difficult for the adhesive force of the double-sided light shielding sheet 37 to withstand the stress generated in the liquid crystal panel 10 as described above. Therefore, the liquid crystal panel 10 accommodated in the frame 40 is in a state where a force that causes the liquid crystal panel 10 to be peeled off from the light guide plate 32 by the stress and lifted from the frame 40 is applied.

  Further, as shown in FIG. 2, the FPC board 20 is used in a state of being bent so as to overlap the back side of the liquid crystal panel 10 when the liquid crystal display device 1 is configured. For this reason, the frame 40 has an upper surface of the frame 40 on the side where the FPC board 20 is bent so that the electronic component mounting portion 22 of the bent FPC board 20 is easily located on the back surface 40b of the frame 40. Since the surface is curved from 41 to the side end face 42, the FPC board 20 is prevented from being disconnected. Further, the FPC board 20 has a curved portion 23 along the side end face 42 of the frame 40.

As shown in FIG. 4, an engagement member 60 containing metal is engaged with the frame 40. The engaging member 60 includes a holding portion 60a extending along the side end surface 42 of the frame 40, and arm portions (locking portions) 60b, 60c extending from the holding portion 60a along the side surfaces 47a, 47b of the frame 40. ing. The engaging member 60 has a shape corresponding to the shape and size of the frame 40 and the thickness of the FPC board 20. As shown in FIG. 1, the engaging member 60 is engaged with the frame 40 while being in contact with the FPC board 20. Is done. Specifically, as shown in FIG. 2, the upper portion 60 d, the inner wall 60 e, and the bottom surface 60 f of the engaging member 60 are in contact with the FPC board 20. As a result, the FPC board 20 is disposed with a gap between the FPC board 20 and the side end face 42 of the frame 40.
As shown in FIG. 4, the height T <b> 1 of the engaging member 60 in the thickness direction of the liquid crystal panel 10 (the vertical direction in FIG. 4) is substantially the same as the height T <b> 2 of the frame 40.
The arm portions 60b and 60c are formed with rectangular through holes 61 and 62, respectively. The through holes 61 and 62 are engaged with locking claws (locking portions) 48 and 49 provided on the side surfaces 47 a and 47 b of the frame 40. As a result, the frame 40 and the engaging member 60 are engaged and integrated by the locking portion, the movement of the engaging member 60 with respect to the frame 40 is restricted, and the engaging member 60 is firmly fixed to the frame 40. Is done.

Next, a method for assembling the liquid crystal display device 1 will be described.
First, the liquid crystal panel 10 is fitted into the frame 40 in which the metal plate 43 and the resin portion 44 are integrally formed. Then, as shown in FIG. 4, the FPC board 20 is wrapped around the side end surface 42 of the frame 40 and fixed to the back surface 40 b of the frame 40 with a double-sided tape 45. Next, the through holes 61 and 62 of the engaging member 60 are engaged with the locking claws 48 and 49 of the frame 40, and the engaging member 60 is fitted into the frame 40.

In the liquid crystal display device 1 according to the present embodiment, since the FPC board 20 is fixed to the frame 40 by the engaging member 60, the bending stress of the FPC board 20 (reaction force that the wiring board tries to return to the original) is applied to the liquid crystal panel 10. Can be suppressed. As a result, the liquid crystal panel 10 can be prevented from floating from the frame 40. Therefore, by reliably preventing the liquid crystal panel 10 from being lifted, it is possible to achieve a good display without uneven brightness and maintain the display quality of the image for a long time.
Further, in the conventional configuration shown in FIG. 7, there is a risk that the pressing of the wiring board by the fixing portion may be weak due to variations in frame dimensions (tolerances), but the liquid crystal display device 1 of the present embodiment is Since the bending stress of the FPC board 20 can be reduced by engaging the engaging member 60 according to the shape, size and thickness of the FPC board 20 with the frame 40, the liquid crystal panel 10 is lifted from the frame 40. Can be prevented.
That is, the liquid crystal display device 1 of the present embodiment can reliably prevent the liquid crystal panel 10 from floating and ensure good display luminance while reducing the size and cost.

In recent years, there has been proposed a liquid crystal display device 1 that can be thinned by improving the strength of the frame. However, the thinned liquid crystal display device 1 does not have sufficient strength against twisting, bending, dropping, vibration, and the like, and there is a problem that it becomes difficult to satisfy the demand for surface strength as the thickness is reduced. In the liquid crystal display device 1 according to the present embodiment, the frame 40 is configured by a metal plate 43 that forms the bottom of the frame 40 and a resin portion 44 that is integrated with the metal plate 43. Thereby, the mechanical strength of the liquid crystal display device 1 against bending and twisting forces can be improved.
Further, when the frame 40 is composed of the metal plate 43 and the resin portion 44, it is difficult to form an opening on the bottom surface of the frame 40. Therefore, the LED 31 is mounted on the FPC board 20 and the LED 31 is mounted from the back surface 40b side of the frame 40. Can not be configured to arrange. However, the liquid crystal display device 1 according to the present embodiment has a structure in which the portion of the frame 40 where the FPC board 20 is disposed is formed only by the resin portion 44 and the engaging member 60 is fitted into the frame 40 to fix the FPC board 20. Therefore, since the LED 31 can be mounted on the FPC board 20 and the LED 31 can be disposed on the back surface side of the liquid crystal panel 10, the cost can be reduced.

Furthermore, since the height T1 of the engaging member 60 is substantially the same as the height T2 of the frame 40, the mechanical strength of the liquid crystal display device 1 can be improved while reducing the overall thickness of the device.
Further, since the engaging member 60 is made of metal, the engaging member 60 is firmly fixed to the frame 40. Therefore, it is possible to increase the strength against impact and the like while reducing the thickness of the entire apparatus.
The engaging member 60 is made of metal and is engaged with the resin portion 44 of the frame 40. This makes it easy to process the locking claws 48 and 49 of the resin portion 44 of the frame 40 into a shape that can be engaged with the through holes 61 and 62 of the engaging member 60, thereby improving productivity. .
In addition, an appropriate gap can be maintained between the side end face 42 of the frame 40 and the connection portion 21 of the FPC board 20, and the stress of the FPC board 20 can be effectively relieved to prevent the liquid crystal panel 10 from floating. Can do. In addition, this gap prevents excessive contact between the side end face 42 of the frame 40 and the connection portion 21, thereby preventing disconnection of the wiring.

When a large liquid crystal panel is used, the engagement member 60 becomes large as the frame 40 becomes larger. In this configuration, by appropriately increasing the number of engaging portions (the locking claws 48 and 49 and the through holes 61 and 62 in the present embodiment) between the frame 40 and the engaging member 60, the frame 40 and the engaging member 60 are used. Can be firmly fixed.
Further, as the engaging portion of the engaging member 60, the through holes 61 and 62 are formed in the engaging member 60 and the engaging claws 48 and 49 are formed in the frame 40. However, the present invention is not limited to this. The positions and numbers of the holes 61 and 62 and the locking claws 48 and 49 are not limited to this.
Further, the upper portion 60d, the inner wall 60e, and the bottom surface 60f of the engaging member 60 are in contact with the FPC board 20, but at least the engaging member 60 is in contact with the one surface of the FPC board 20 to the frame 40. It only has to be engaged. In this case, the liquid crystal panel 10 can be most prevented from being lifted by the configuration in which the upper portion 60d of the engaging member 60 is brought into contact with the FPC board 20. Next, the liquid crystal panel 10 can be prevented from being lifted by the FPC board 20 The bottom surface 60f of the engaging member 60 is brought into contact with the FPC board 20, and finally, the inner wall 60e of the engaging member 60 is brought into contact with the FPC board 20. In the configuration in which only the upper portion 60d of the engaging member 60 is brought into contact with the FPC board 20, the degree of freedom of arrangement of the semiconductor device 54 and the like mounted on the FPC board 20 is increased. It becomes easy to align the back surface 20c side.
In this embodiment, since the FPC board 20 is pressed by the U-shaped engaging member 60, the liquid crystal panel 10 can be reliably prevented from floating.
In addition, although the frame 40 includes the metal plate 43 and the resin portion 44, plastic may be used in place of the metal plate 43.
Further, the engaging member 60 does not necessarily include a metal, and at least a portion engaged with the frame 40 may be a rigid member.
Further, the liquid crystal display device 1 including the liquid crystal panel 10 as an electro-optical device has been described as an example. However, the present invention is not limited to this, and the present invention can be applied to general electro-optical devices.

[Electronics]
Next, an electronic apparatus including the liquid crystal display device 1 having the above-described configuration will be described. In addition, this embodiment shows an example of this invention and this invention is not limited to this embodiment. Here, FIG. 5 is an external perspective view showing a mobile phone which is an electronic apparatus including the liquid crystal display device 1 of the present invention. The electronic apparatus according to the present embodiment is a mobile phone 300 as shown in FIG. 5, and includes a main body 301 and a display body 302 that can be opened and closed. A display device 303 is arranged inside the display body 302, and various displays relating to telephone communication can be visually recognized on the display screen 304. In addition, operation buttons 305 are arranged on the main body 301.
An antenna 306 is attached to one end of the display body 302 so as to be extendable. In addition, a speaker (not shown) is built in the receiver 307 provided on the upper portion of the display body 302. Furthermore, a microphone (not shown) is built in the transmitter 308 provided at the lower end of the main body 301. Here, the liquid crystal display device 1 is used for the display device 303.

  In addition to the mobile phone, the electronic device of the present invention includes, for example, an electronic notebook, a personal computer, an electronic book, a viewfinder type, a monitor direct view type video tape recorder, a car navigation device, a pager, an electronic notebook, a calculator, and a word processor. , Workstations, videophones, POS terminals and the like.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

It is a top view which shows the liquid crystal display device which concerns on one Embodiment of this invention. It is principal part sectional drawing of the liquid crystal display device of FIG. It is the perspective view which looked at the liquid crystal display device of Drawing 1 from the back. It is a perspective view which shows the state before engaging the engaging member of the liquid crystal display device of FIG. It is a schematic block diagram of the mobile telephone which concerns on the electronic device of this invention. It is sectional drawing which showed the trouble of the conventional liquid crystal display device. It is sectional drawing which showed the trouble of the conventional liquid crystal display device. It is the perspective view which showed the problem of the conventional liquid crystal display device.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Liquid crystal display device (electro-optical device), 10 ... Liquid crystal panel (electro-optical panel), 20 ... FPC board (wiring board), 40 ... Frame, 43 ... Metal plate (metal part), 44 ... Resin part, 60 ... Engagement member 300 ... Mobile phone (electronic device)

Claims (8)

An electro-optic panel having an electro-optic material;
A frame for accommodating the electro-optic panel;
One end is connected to the electro-optical panel, and the wiring board is fixed to the back surface of the frame around the side end surface of the frame;
An electro-optical device comprising: an engagement member engaged with the frame in a state where at least one surface is in contact with the wiring board.   2. The electro-optical device according to claim 1, wherein the frame includes a metal portion that forms at least a bottom portion of the frame, and a resin portion that is integrated with the metal portion.   The electro-optical device according to claim 1, wherein the frame housing the electro-optical panel and the engaging member are engaged and integrated by a locking portion.   4. The electro-optical device according to claim 1, wherein the one end side of the wiring board is in contact with an engagement member. 5.   The side end face of the frame has a curved surface, the wiring board has a curved portion along the side end face of the frame, and the wiring board is in contact with the side end face of the frame by contact of the engaging member. 5. The electro-optical device according to claim 1, wherein the electro-optical device is disposed with a gap therebetween.   6. The electro-optical device according to claim 1, wherein at least a portion of the engaging member engaged with the frame is formed of a rigid member.   The electro-optical device according to claim 2, wherein the engagement member includes a metal and is engaged with the resin portion of the frame.   An electronic apparatus comprising the electro-optical device according to any one of claims 1 to 7.

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