CN113990697B - Optical knob device - Google Patents

Abstract

The invention provides an optical knob device. The optical knob device comprises a shell, a reflecting piece, a display panel and at least one photosensitive element. The shell is provided with an opening, and the reflecting piece is arranged on the inner surface of the shell. The display panel is positioned in the shell, exposed out of the opening and comprises a plurality of light-emitting elements. The photosensitive element is used for sensing light emitted by a first light emitting element in the plurality of light emitting elements and reflected by the reflecting piece.

Description

Optical knob device

Technical field

The present invention relates to a knob device, in particular to an optical knob device.

Background technique

With the trend of digital home appliances, knobs with display functions have appeared on the market. However, these knobs still use traditional brush connection components or Hall elements to determine the rotation angle (or rotation position). Currently, there is no knob on the market that integrates a display element to determine the rotation angle.

Contents of the invention

The object of the present invention is to provide an optical knob device that can integrate a display element to determine the rotation angle.

One embodiment of the present invention proposes an optical knob device, including: a housing having an opening; a reflective member disposed on the inner surface of the housing; a display panel located inside the housing, exposed from the opening, and including a plurality of light-emitting elements; and at least one photosensitive element for sensing light emitted by a first light-emitting element among the plurality of light-emitting elements and reflected by the reflective member.

In an embodiment of the present invention, the number of the above-mentioned photosensitive elements is one, and the number of the first light-emitting elements is one.

In an embodiment of the present invention, the above-mentioned reflective element has a gradually varying width or reflectivity along its length.

In an embodiment of the present invention, the above-mentioned housing includes a lower plate and a frame. The frame is connected to the periphery of the lower plate, and the reflective member is located on the lower plate or the frame.

In an embodiment of the present invention, the above-mentioned housing further includes an upper plate, the periphery of the upper plate is connected to the frame, the opening is located in the upper plate, and the reflective member is located on the upper plate, the lower plate or the frame.

In an embodiment of the present invention, the above-mentioned photosensitive element has a photosensitive surface area or photosensitive capability that gradually changes along the frame.

In an embodiment of the present invention, the above-mentioned first light-emitting element has a light-emitting surface area that gradually changes along the frame.

In an embodiment of the present invention, the number of the above-mentioned photosensitive elements is one, and the number of the first light-emitting elements is multiple.

In one embodiment of the present invention, the orthographic projection of the above-mentioned reflecting member on the housing overlaps the orthographic projection of the first light-emitting element on the housing.

In an embodiment of the present invention, the number of the above-mentioned photosensitive elements is multiple, and the number of the first light-emitting element is one.

In an embodiment of the present invention, the orthographic projection of the above-mentioned reflecting member on the housing overlaps the orthographic projection of a photosensitive element on the housing.

In an embodiment of the present invention, the number of the above-mentioned photosensitive elements is multiple, and the number of the first light-emitting elements is multiple.

In one embodiment of the present invention, the orthographic projection of the above-mentioned reflecting member on the housing overlaps a photosensitive element and a first light-emitting element on the orthographic projection of the housing.

In an embodiment of the present invention, the above-mentioned display panel has a display area and a peripheral area, and the display area is exposed from the opening.

In an embodiment of the present invention, the above-mentioned first light-emitting element is located in the display area or the peripheral area.

In an embodiment of the present invention, the above-mentioned photosensitive element is located in the peripheral area.

In an embodiment of the present invention, the above-mentioned display panel further includes a plurality of scanning lines, and the photosensitive element and the first light-emitting element are electrically connected to the same scanning line.

In an embodiment of the present invention, the reflectivity of the above-mentioned reflective member is greater than the reflectivity of the casing.

The beneficial effect of the present invention is that by appropriately configuring the relative positions of the light-emitting element, the photosensitive element and the reflective element of the display panel, the light emitted by the light-emitting element can be reflected by the reflective element to the photosensitive element. At the same time, the light-emitting element has a gradual change of light-emitting surface area along the frame, the photosensitive element has a gradual change of light-sensitive surface area or photosensitivity along the frame, or the reflective element has a gradual width or reflectivity along the frame, which can be measured from the photosensitive element. The obtained sensed light amount is used to determine the rotation angle of the optical knob device, thereby providing an optical knob device that can integrate a display element to determine the rotation angle.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the attached drawings.

Description of drawings

1A is a schematic exploded view of an optical knob device according to an embodiment of the invention.

FIG. 1B is a schematic cross-sectional view of the optical knob device of FIG. 1A .

FIG. 1C is a schematic circuit diagram of the light-emitting element and the photosensitive element of the optical knob device shown in FIG. 1A .

FIG. 2A is a schematic exploded view of an optical knob device according to an embodiment of the invention.

Figure 2B is a schematic cross-sectional view of the optical knob device of Figure 2A.

3A is a schematic exploded view of an optical knob device according to an embodiment of the invention.

Figure 3B is a schematic cross-sectional view of the optical knob device of Figure 3A.

FIG. 4A is a schematic cross-sectional view of an optical knob device according to an embodiment of the present invention.

FIG. 4B is a schematic front view of the reflective member, display unit array and photosensitive element of the optical knob device in FIG. 4A .

FIG. 5A is a schematic cross-sectional view of an optical knob device according to an embodiment of the present invention.

FIG. 5B is a schematic front view of the frame, reflector, display unit array and photosensitive element of the optical knob device in FIG. 5A .

6 is a schematic front view of the frame, reflective member, display unit array and photosensitive element of the optical knob device according to an embodiment of the present invention.

7 is a schematic front view of the frame, reflective member, display unit array and photosensitive element of the optical knob device according to an embodiment of the present invention.

8 is a schematic front view of the frame, reflective member, display unit array and photosensitive element of the optical knob device according to an embodiment of the present invention.

FIG. 9A is a schematic cross-sectional view of an optical knob device according to an embodiment of the present invention.

FIG. 9B is a schematic front view of the frame, reflector, display unit array and photosensitive element of the optical knob device in FIG. 9A .

The reference numbers are as follows:

10, 20, 30, 40, 50, 60, 70, 80, 90: Optical knob device

110: Shell

111: Lower board

112: border

120: Reflective parts

130: Display panel

131: Upper substrate

132: Lower base plate

133, 433, 533, 633, 733, 833, 933: display unit array

AA: display area

BA: surrounding area

CA: central axis

D1: direction

DL1, DL2: signal lines

GL: scan line

LD, LD1: light emitting element

OP: Open your mouth

SF: Pivot

SR: photosensitive element

T1, T2: switching elements

Detailed ways

FIG. 1A is a schematic exploded view of an optical knob device 10 according to an embodiment of the present invention. FIG. 1B is a schematic cross-sectional view of the optical knob device 10 of FIG. 1A . FIG. 1C is a schematic circuit diagram of the light-emitting element LD1 and the photosensitive element SR of the optical knob device 10 shown in FIG. 1A .

Please refer to FIG. 1A and FIG. 1B simultaneously. The optical knob device 10 includes: a housing 110, a reflective member 120, a display panel 130 and a photosensitive element SR. The housing 110 has an opening OP. The reflective member 120 is disposed on the inner surface of the housing 110 . The display panel 130 is located inside the housing 110, exposed from the opening OP, and includes a plurality of light emitting elements LD. The light-sensing element SR is used to sense the light emitted by one light-emitting element LD1 among the plurality of light-emitting elements LD and reflected by the reflective member 120 .

Based on the above, in the optical knob device 10 according to an embodiment of the present invention, the reflective member 120 is provided on the housing 110 so that the light emitted by the light-emitting element LD1 of the display panel 130 can be reflected by the reflective member 120 to the photosensitive element SR. , in this way, the amount of reflected light sensed by the photosensitive element SR can be used to determine the rotation angle of the optical knob device 10 .

Below, with reference to FIGS. 1A to 1C , the implementation of each element and component of the optical knob device 10 will be continued to be described, but the present invention is not limited thereto.

Please refer to FIG. 1A and FIG. 1B at the same time. In this embodiment, the housing 110 may include a lower plate 111 and a frame 112, and the frame 112 may be connected to the periphery of the lower plate 111 so that there is an accommodation space inside the housing 110. For example, with in the space accommodating the display panel 130 . In addition, the user can view the display image of the display panel 130 through the opening OP of the housing 110 .

In some embodiments, the housing 110 may further include a pivot SF, the pivot SF may be disposed on the outside of the lower plate 111 of the housing 110, and the pivot SF may be disposed on the central axis CA of the optical knob device 10, Or the pivot SF may be coaxially disposed with the optical knob device 10 so that the housing 110 can be rotated relative to the central axis CA of the optical knob device 10 . In some embodiments, the housing 110 may be rotatably fixed on the pivot SF such that the housing 110 may be rotated relative to the pivot SF. When the housing 110 is rotated, the reflective member 120 on the housing 110 can move relative to the light-emitting element LD1 and the photosensitive element SR. In some embodiments, the optical knob device 10 can be disposed on, for example, some equipment or a machine platform, and the housing 110 of the optical knob device 10 can be rotatably fixed to the above-mentioned equipment or machine platform through the pivot SF, so that The user is allowed to operate the above-mentioned equipment or machine through the optical knob device 10 .

In this embodiment, the reflective member 120 is disposed on the inner surface of the housing 110 and is located on the lower plate 111 , but the invention is not limited thereto. The reflective member 120 may have a uniformly distributed reflectivity, and the reflective member 120 may have a tapered width along its length. For example, in this embodiment, the length of the reflective member 120 may extend along the direction D1 around the central axis CA, and the reflective member 120 has a width that increases along the direction D1, but is not limited thereto. In some embodiments, the reflective member 120 may have a width that decreases along direction D1. Since the reflective member 120 itself has a uniformly distributed reflectivity, an area with a larger width can reflect a larger amount of light, while an area with a smaller width can reflect a smaller amount of light. In this way, as the photosensitive element SR moves relative to the reflective member Depending on the position of 120, the photosensitive element SR can measure different amounts of sensed light. Therefore, the position of the photosensitive element SR relative to the reflective member 120 can be deduced from the amount of sensed light measured by the photosensitive element SR, thereby obtaining the rotation angle of the optical knob device 10 .

In some embodiments, the reflective member 120 may have a fixed width, and the reflective member 120 may have increasing or decreasing reflectivity along its length (or direction D1 ). When the reflective member 120 itself has a fixed width, the area with a larger reflectivity can reflect a larger amount of light, while the area with a smaller reflectivity can reflect a smaller amount of light. In this way, as the photosensitive element SR changes relative to the reflection Depending on the position of the component 120, the photosensitive element SR can measure different amounts of sensed light. Therefore, the position of the photosensitive element SR relative to the reflective member 120 can be deduced from the amount of sensed light measured by the photosensitive element SR, thereby obtaining the rotation angle of the optical knob device 10 .

In the above embodiment, the reflectivity of the reflective member 120 is preferably greater than the reflectivity of the housing 110 to prevent the reflected light from the housing 110 from interfering with the photosensitive element SR's sensing of the reflected light from the reflective member 120 and affecting the rotation angle. judgment. For example, in some embodiments, the reflectivity of the reflective member 120 may be no less than 1.1 times that of the housing 110 . For example, the reflectivity of the reflective member 120 may be 1.2 times or 1.5 times that of the housing 110 . or more times. The material of the housing 110 can be plastic, metal or composite material, but is not limited thereto. The material of the reflective member 120 may be metal, alloy or composite material, but is not limited thereto.

In this embodiment, the display panel 130 may include an upper substrate 131, a lower substrate 132 and a display unit array 133, but is not limited thereto. The upper substrate 131 and the lower substrate 132 may be, for example, a light-transmissive glass substrate, a flexible polyimide (PI) substrate, or other substrates commonly used in display devices. The display unit array 133 is sandwiched between the upper substrate 131 and the lower substrate 132. A plurality of light-emitting elements LD can be disposed in the display unit array 133, and the light emitted by the light-emitting element LD1 of the plurality of light-emitting elements LD can be reflected by the reflector. 120 is reflected to the photosensitive element SR. The light emitting element LD may be an organic light emitting diode (OLED) or a micro light emitting diode (Micro-LED), but is not limited thereto. In some embodiments, when the housing 110 is rotatably fixed on the pivot SF, the display panel 130 may be fixed on the pivot SF.

In this embodiment, the photosensitive element SR can be disposed in the display unit array 133, but is not limited thereto. The photosensitive element SR may be a photosensitive element using an organic photosensitive material, such as an organic photodetector (OPD) or an organic photovoltaic element (OPV). Alternatively, the photosensitive element SR may be a photosensitive element using an inorganic photosensitive material such as silicon-rich oxide.

In this embodiment, since the reflective member 120 is located on the lower plate 111, the photosensitive element SR can be disposed on a side of the light-emitting element LD1 away from or close to the central axis CA, but is not limited to this. By appropriately configuring the relative positions of the light-emitting element LD1 and the photosensitive element SR to the reflective element 120, the light emitted by the light-emitting element LD1 can be reflected by the reflective element 120 to the photosensitive element SR, and most of the reflected light from the reflective element 120 can be reflected by the photosensitive element 120. SR received.

In addition, in this embodiment, the display panel 130 may have a display area AA and a peripheral area BA, and the light-emitting element LD1 may be located in the display area AA, and the photosensitive element SR may be located in the peripheral area BA, but the invention is not limited thereto.

Referring to FIG. 1C , the display panel 130 may further include a plurality of scan lines GL, and the photosensitive element SR and the light-emitting element LD1 are electrically connected to the same scan line GL. For example, in this embodiment, the light-emitting element LD1 is electrically connected to the switching element T1, and the photosensitive element SR is electrically connected to the switching element T2. The gates of the switching elements T1 and T2 are both electrically connected to the scanning line GL. In this way, the signal transmitted by the scanning line GL can simultaneously control the opening or closing of the switching elements T1 and T2. When the switching elements T1 and T2 are turned on, , the signal transmitted by the signal line DL1 can be transmitted to the light-emitting element LD1 through the switching element T1, and at the same time, the signal transmitted by the signal line DL2 can be transmitted to the photosensitive element SR through the switching element T2.

In the following, other embodiments of the present invention will continue to be described, and the component numbers and related content used in the embodiments of FIGS. 1A to 1C will be used.

FIG. 2A is a schematic exploded view of the optical knob device 20 according to an embodiment of the present invention. FIG. 2B is a schematic cross-sectional view of the optical knob device 20 of FIG. 2A . Compared with the optical knob device 10 shown in FIGS. 1A to 1C , the optical knob device 20 shown in FIGS. 2A and 2B is different in that the reflective member 120 is disposed on the inner surface of the housing 110 and located on the frame 112 on, and the photosensitive element SR is disposed on one side of the light-emitting element LD1 along the direction D1.

In this embodiment, the housing 110 includes a lower plate 111 and a frame 112 . Since the reflective member 120 is located on the frame 112, the photosensitive element SR can be disposed on one side of the light-emitting element LD1 along the direction D1, but is not limited thereto. In some embodiments, the photosensitive element SR may be disposed on an opposite side of the light emitting element LD1 along the direction D1. By appropriately configuring the relative positions of the light-emitting element LD1 and the photosensitive element SR to the reflective element 120, the light emitted by the light-emitting element LD1 can be reflected by the reflective element 120 to the photosensitive element SR, and most of the reflected light from the reflective element 120 can be reflected by the photosensitive element 120. SR received.

In this embodiment, the reflective member 120 may have uniform reflectivity, and the reflective member 120 may have a gradient width or reflectivity along its length. For example, in this embodiment, the length of the reflective member 120 may extend along the frame 112, and the reflective member 120 has an increasing width along the frame 112, but is not limited thereto. In some embodiments, reflector 120 may have a decreasing width along frame 112 . When the reflective member 120 itself has uniform reflectivity, an area with a larger width can reflect a greater amount of light, and an area with a smaller width can reflect a smaller amount of light. In this way, the relative amount of light measured by the photosensitive element SR The corresponding position of the photosensitive element SR on the reflective member 120 can be deduced, thereby obtaining the rotation angle of the optical knob device 20 .

In some embodiments, the reflective member 120 may have a fixed width, and the reflectivity of the reflective member 120 may increase or decrease along the border 112 . When the reflective member 120 itself has a fixed width, the area with a larger reflectivity can reflect a larger amount of light, and the area with a smaller reflectivity can reflect a smaller amount of light. In this way, the relative value measured by the photosensitive element SR is The amount of light can be used to deduce the corresponding position of the photosensitive element SR on the reflective member 120, thereby obtaining the rotation angle of the optical knob device 20.

In addition, in this embodiment, the display panel 130 may have a display area AA and a peripheral area BA, and the light-emitting element LD1 and the photosensitive element SR may be located in the peripheral area BA.

FIG. 3A is a schematic exploded view of the optical knob device 30 according to an embodiment of the present invention. FIG. 3B is a schematic cross-sectional view of the optical knob device 30 of FIG. 3A . Compared with the optical knob device 10 shown in FIGS. 1A to 1C , the optical knob device 30 shown in FIGS. 3A and 3B is different in that the housing 110 includes a lower plate 111 , a frame 112 and an upper plate 113 . The periphery of the upper plate 113 is connected to the frame 112 , the opening OP is located in the upper plate 113 , and the reflective member 120 is located on the upper plate 113 .

In this embodiment, since the reflective member 120 is located on the upper plate 113, the photosensitive element SR can be disposed on the side of the light-emitting element LD1 away from the central axis CA, but is not limited to this. In some embodiments, the photosensitive element SR may be disposed on a side of the light-emitting element LD1 close to the central axis CA. By appropriately configuring the relative positions of the light-emitting element LD1 and the photosensitive element SR to the reflective element 120, the light emitted by the light-emitting element LD1 can be reflected by the reflective element 120 to the photosensitive element SR, and most of the reflected light from the reflective element 120 can be reflected by the photosensitive element 120. SR received.

In this embodiment, the reflective member 120 may have uniform reflectivity, and the reflective member 120 may have a gradient width or reflectivity along its length. For example, in this embodiment, the length of the reflective member 120 may extend along the direction D1 around the central axis CA, and the reflective member 120 has a width that increases along the direction D1, but is not limited thereto. In some embodiments, the reflective member 120 may have a width that decreases along direction D1. When the reflective member 120 itself has uniform reflectivity, an area with a larger width can reflect a greater amount of light, and an area with a smaller width can reflect a smaller amount of light. In this way, the relative amount of light measured by the photosensitive element SR The corresponding position of the photosensitive element SR on the reflective member 120 can be deduced, thereby obtaining the rotation angle of the optical knob device 30 .

In some embodiments, the reflective member 120 may have a fixed width, and the reflectivity of the reflective member 120 may increase or decrease along the direction D1. When the reflective member 120 itself has a fixed width, the area with a larger reflectivity can reflect a larger amount of light, and the area with a smaller reflectivity can reflect a smaller amount of light. In this way, the relative value measured by the photosensitive element SR is The amount of light can be used to deduce the corresponding position of the photosensitive element SR on the reflective member 120, thereby obtaining the rotation angle of the optical knob device 30.

In addition, in this embodiment, the display panel 130 may have a display area AA and a peripheral area BA. The display area AA may be exposed from the opening OP, and the light-emitting element LD1 and the photosensitive element SR may be located in the peripheral area BA.

In some embodiments, the reflective member 120 of the optical knob device 30 can also be disposed on the lower plate 111 similar to the optical knob device 10 shown in FIGS. 1A to 1B , or similar to the optical knob device 10 shown in FIGS. 2A to 2B . The knob device 10 is disposed on the frame 112. At the same time, by appropriately configuring the relative positions of the light-emitting element LD1 and the photosensitive element SR and the reflective member 120, the light emitted by the light-emitting element LD1 can be reflected by the reflective member 120 to the photosensitive element SR, and from the reflection. Most of the reflected light from the element 120 can be received by the photosensitive element SR.

FIG. 4A is a schematic cross-sectional view of an optical knob device 40 according to an embodiment of the present invention. FIG. 4B is a schematic front view of the reflective member 120 , the display unit array 433 and the photosensitive element SR of the optical knob device 40 in FIG. 4A . Compared with the optical knob device 10 shown in FIGS. 1A to 1C , the optical knob device 40 shown in FIGS. 4A and 4B is different in that the optical knob device 40 includes a plurality of light-emitting elements LD1 and a plurality of photosensitive elements. SR; the orthographic projection of the reflective member 120 on the housing 110 overlaps the orthographic projection of a photosensitive element SR and a light-emitting element LD1 on the housing 110; and the housing 110 includes a lower plate 111, a frame 112 and an upper plate 113.

In this embodiment, the display panel 130 may have a display area AA and a peripheral area BA. The display area AA may be exposed from the opening OP, and the light-emitting element LD1 and the photosensitive element SR may be located in the peripheral area BA.

In this embodiment, the reflective member 120 is provided on the lower plate 111, but it is not limited to this. The orthographic projection of the reflective member 120 on the housing 110 can substantially overlap the orthographic projection of a photosensitive element SR and a light-emitting element LD1 on the housing 110 .

For example, as shown in FIG. 4A , the optical knob device 40 may include 12 light-emitting elements LD1 and 12 photosensitive elements SR. Each light-emitting element LD1 may be disposed adjacent to a photosensitive element SR, so that each light-emitting element LD1 emits The light can be received by the adjacent photosensitive element SR after being reflected by the reflective member 120 . In this way, when the optical knob device 40 is rotated and the orthographic projection of the reflective member 120 on the housing 110 overlaps the light-emitting element LD1 and the adjacent photosensitive element SR on the orthographic projection of the housing 110, the photosensitive element overlapping with the reflective member 120 SR can measure a relatively larger amount of sensed light than other non-overlapping photosensitive elements SR. Therefore, the photosensitive element SR overlapping with the reflective member 120 can be determined by the amount of sensed light of the photosensitive element SR, and then the overlap can be achieved accordingly. The position of the photosensitive element SR is used to obtain the position of the reflective member 120 and the rotation angle of the optical knob device 40 .

On the other hand, when the optical knob device 40 is rotated and the orthographic projection of the reflective member 120 on the housing 110 is located between two adjacent photosensitive elements SR, the amount of light sensed by the two photosensitive elements SR can be compared. The distance ratio between the reflective member 120 and the two photosensitive elements SR is determined, and then the position of the reflective member 120 is calculated to obtain the rotation angle of the optical knob device 40 .

It is worth mentioning that the number of the light-emitting element LD1 and the photosensitive element SR is not particularly limited, as long as the rotation angle of the optical knob device 40 can be obtained by the amount of light sensed by the photosensitive element SR. For example, in some embodiments, the optical knob device 40 may include 8 light-emitting elements LD1 and 8 photosensitive elements SR. In some embodiments, the optical knob device 40 may include 30 light-emitting elements LD1 and 30 photosensitive elements SR.

FIG. 5A is a schematic cross-sectional view of an optical knob device 50 according to an embodiment of the present invention. FIG. 5B is a schematic front view of the frame 112, the reflective member 120, the display unit array 533 and the photosensitive element SR of the optical knob device 50 in FIG. 5A. Compared with the optical knob device 40 shown in FIGS. 4A and 4B , the optical knob device 50 shown in FIGS. 5A and 5B is different in that the plurality of photosensitive elements SR of the optical knob device 50 have edges along the frame 112 Gradient photosensitive surface area.

Please refer to FIGS. 5A and 5B simultaneously. The display panel 130 may have a display area AA and a peripheral area BA. The display area AA may be exposed from the opening OP, and a plurality of light-emitting elements LD1 and a plurality of photosensitive elements SR may be located in the peripheral area BA. The plurality of light-emitting elements LD1 may be arranged around the display area AA. That is to say, the plurality of light-emitting elements LD1 may be composed of the outermost light-emitting elements LD of the display panel 130, but the present invention is not limited thereto.

In this embodiment, the plurality of photosensitive elements SR can be disposed adjacent to the plurality of light-emitting elements LD1 respectively, and the plurality of photosensitive elements SR are located on the periphery of the plurality of light-emitting elements LD1, but it is not limited to this. The photosensitive surface area of the multiple photosensitive elements SR is different and increases or decreases along the frame 112. In this way, the orthographic projection of the reflector 120 on the housing 110 overlaps a light-emitting element LD1 and an adjacent photosensitive element SR. In the case of orthographic projection of the housing 110 and a fixed area of the reflective member 120 , the photosensitive element SR with a larger photosensitive surface area can receive relatively more reflected light from the reflective member 120 and measure a relatively large sensing value. amount of light. Therefore, the photosensitive element SR overlapping the reflective member 120 can be determined by the sensed light amount measured by each photosensitive element SR, thereby obtaining the rotation angle of the optical knob device 50 .

For example, in some embodiments, the photosensitive element SR may have

ITO/PEDOT:PSS/P3HT:PCBM/Al stacked structure, where Al is the cathode of the electron receiving end, P3HT:PCBM is the photosensitive layer that generates photocurrent, PEDOT:PSS is the hole transport layer, and ITO is the anode of the hole receiving end . In this structure, the photosensitive surface area of the photosensitive element SR can be changed by changing the overlapping area of ITO and AL.

Alternatively, in some embodiments, the plurality of photosensitive elements SR may have photosensitive capabilities that gradually change (increase or decrease) along the frame 112 . For example, when the photosensitive element SR has a laminated structure of ITO/PEDOT:PSS/P3HT:PCBM/Al, the photosensitive ability of the photosensitive element SR can be changed by changing the thickness of the P3HT:PCBM photosensitive layer in each photosensitive element SR. When the thickness of the P3HT:PCBM photosensitive layer is thinner, the photosensitive ability of the photosensitive element SR is lower, and the amount of sensed light that can be measured by the photosensitive element SR will be less. Therefore, the photosensitive element SR overlapping the reflective member 120 can be determined by the sensed light amount measured by each photosensitive element SR, thereby obtaining the rotation angle of the optical knob device 50 .

FIG. 6 is a schematic front view of the frame 112, the reflective member 120, the display unit array 633 and the photosensitive element SR of the optical knob device 60 according to an embodiment of the present invention. Compared with the optical knob device 50 shown in FIGS. 5A and 5B , the optical knob device 60 shown in FIG. 6 is different in that the optical knob device 60 includes a plurality of light-emitting elements LD1 and a photosensitive element SR.

For example, in this embodiment, multiple photosensitive elements SR shown in FIG. 5B can be integrated into a single photosensitive element SR. That is to say, the single photosensitive element SR has a gradually changing photosensitive surface area or photosensitive capability along the frame 112 . In addition, the orthographic projection of the reflecting member 120 on the aforementioned housing may overlap one light-emitting element LD1 among the plurality of light-emitting elements LD1 and part of the photosensitive element SR on the orthographic projection of the aforementioned housing. In this way, when the area of the reflective member 120 is fixed, as the photosensitive surface area or photosensitive capability of the area on the photosensitive element SR overlapping the reflective member 120 is different, the photosensitive element SR can measure different sensed lights accordingly. The amount of light detected by the photosensitive element SR can be used to deduce the area on the photosensitive element SR that overlaps the reflective member 120 , thereby obtaining the rotation angle of the optical knob device 60 .

FIG. 7 is a schematic front view of the frame 112, the reflective member 120, the display unit array 733 and the photosensitive element SR of the optical knob device 70 according to an embodiment of the present invention. Compared with the optical knob device 50 shown in FIGS. 5A to 5B , the optical knob device 70 shown in FIG. 7 is different in that the optical knob device 70 includes a light-emitting element LD1 and a plurality of photosensitive elements SR.

For example, in this embodiment, multiple light-emitting elements LD1 shown in FIG. 5B can be integrated into a single light-emitting element LD1. That is to say, the light-emitting element LD1 has a circular ring shape. In addition, the reflective member 120 overlaps one photosensitive element SR among the plurality of photosensitive elements SR and part of the light-emitting element LD1 on the orthographic projection of the aforementioned casing. In this way, as the position of the reflective member 120 changes, the light emitted by the light-emitting element LD1 can be reflected by the reflective member 120 to the photosensitive element SR overlapping the reflective member 120 . Therefore, in the case where the plurality of photosensitive elements SR have gradually varying photosensitive surface areas (or photosensitive capabilities) along the frame 112 and the area of the reflective member 120 is fixed, as the photosensitive surface area of the photosensitive element SR overlapping the reflective member 120 ( or light sensitivity), the optical knob device 70 can measure different amounts of sensed light accordingly. In this way, the photosensitive element SR overlapping the reflective member 120 can be deduced from the measured amount of sensed light, thereby obtaining the rotation angle of the optical knob device 70 .

FIG. 8 is a schematic front view of the frame 112, the reflective member 120, the display unit array 833 and the photosensitive element SR of the optical knob device 80 according to an embodiment of the present invention. Compared with the optical knob device 70 shown in FIG. 7 , the optical knob device 80 shown in FIG. 8 is different in that the optical knob device 80 includes a light-emitting element LD1 and a photosensitive element SR.

For example, in this embodiment, multiple photosensitive elements SR shown in FIG. 7 can be integrated into a single photosensitive element SR. That is to say, the single photosensitive element SR has a gradually changing photosensitive surface area or photosensitive capability along the frame 112 . In this way, when the area of the reflective member 120 is fixed, as the width of the area on the photosensitive element SR overlapping the reflective member 120 is different, the photosensitive element SR can measure different amounts of sensed light accordingly. In this way, the amount of sensed light measured by the photosensitive element SR can be deduced from the area on the photosensitive element SR that overlaps the reflective member 120 , thereby obtaining the rotation angle of the optical knob device 80 .

FIG. 9A is a schematic cross-sectional view of an optical knob device 90 according to an embodiment of the present invention. FIG. 9B is a schematic front view of the frame 112, the reflective member 120, the display unit array 933 and the photosensitive element SR of the optical knob device 90 of FIG. 9A. Compared with the optical knob device 80 shown in FIG. 8 , the optical knob device 90 shown in FIGS. 9A and 9B is different in that: the photosensitive element SR is arranged around the display area AA, and the light-emitting element LD1 is arranged around the photosensitive element SR, The photosensitive element SR has a circular ring shape, and the light-emitting element LD1 has a gradually changing width along the frame 112 .

Please refer to FIGS. 9A and 9B simultaneously. The display panel 130 may have a display area AA and a peripheral area BA. The display area AA is exposed from the opening OP, and the light-emitting element LD1 and the photosensitive element SR may be located in the peripheral area BA. The photosensitive element SR can be disposed around the display area AA. That is to say, the photosensitive element SR can be adjacent to the outermost light-emitting element LD in the display area AA, but the present invention is not limited thereto. In addition, the light-emitting element LD1 can be disposed adjacent to the photosensitive element SR, and the light-emitting element LD1 is located on the periphery of the photosensitive element SR, but is not limited to this. The width of the light-emitting element LD1 increases or decreases along the frame 112, so that the light-emitting element LD1 has a light-emitting surface area that increases or decreases along the frame 112. In this way, when the area of the reflector 120 remains unchanged, as the light-emitting element LD1 Depending on the area of the light-emitting surface of the area where the reflective member 120 overlaps, the photosensitive element SR can correspondingly measure different amounts of sensed light. Therefore, the area of the light-emitting element LD1 overlapping the reflective member 120 can be deduced from the sensed light amount measured by the photosensitive element SR, thereby obtaining the rotation angle of the optical knob device 90 .

In some embodiments, the light-emitting element LD1 of the optical knob device 90 can be divided into the photosensitive element SR as shown in FIG. 7 to form multiple sub-light-emitting elements with different light-emitting surface areas. In this way, the sub-light-emitting element with a larger light-emitting surface area can emit relatively more light, so that the photosensitive element SR can receive relatively more reflected light from the reflective member 120 and measure relatively large sensing light. quantity. Therefore, the sub-light-emitting element overlapping the reflective member 120 can be determined from the amount of sensed light measured by the photosensitive element SR, thereby obtaining the rotation angle of the optical knob device 90 .

In some embodiments, the light-emitting element LD1 of the optical knob device 90 can be divided into the photosensitive element SR as shown in FIG. 7 to form multiple sub-light-emitting elements with different light-emitting surface areas. In this way, the sub-light-emitting element with a larger light-emitting surface area can emit relatively more light, so that the photosensitive element SR can receive relatively more reflected light from the reflective member 120 and measure relatively large sensing light. quantity. Therefore, the sub-light-emitting element overlapping the reflective member 120 can be determined from the amount of sensed light measured by the photosensitive element SR, thereby obtaining the rotation angle of the optical knob device 90 .

In addition, in some embodiments, the photosensitive element SR of the optical knob device 90 can also be divided corresponding to the aforementioned sub-light-emitting elements to form multiple sub-photosensitive elements with the same photosensitive surface area. In this way, when the orthographic projection of the reflective member 120 on the housing 110 overlaps the orthographic projection of one sub-light-emitting element and an adjacent sub-photosensitive element on the housing 110 and the area of the reflective member 120 is fixed, the area of the light-emitting surface The larger sub-light emitting element can emit relatively more light, so that the adjacent sub-photosensitive element can receive relatively more reflected light from the reflective member 120 and measure a relatively large amount of sensed light. Therefore, the sub-light-emitting element overlapping the reflective member 120 can be determined from the sensed light amount measured by the sub-photosensitive element, thereby obtaining the rotation angle of the optical knob device 90 .

To sum up, the present invention appropriately configures the relative positions of the light-emitting element, the photosensitive element and the reflective element of the display panel, so that the light emitted by the light-emitting element can be reflected by the reflective element to the photosensitive element. At the same time, the light-emitting element has a gradual change of light-emitting surface area along the frame, the photosensitive element has a gradual change of light-sensitive surface area or photosensitivity along the frame, or the reflective element has a gradual width or reflectivity along the frame, which can be measured from the photosensitive element. The obtained sensed light amount is used to determine the rotation angle of the optical knob device, thereby providing an optical knob device that can integrate a display element to determine the rotation angle.

Although the present invention has been disclosed above through embodiments, they are not intended to limit the present invention. Those skilled in the art can make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is That shall prevail as defined in the appended claims.

Claims (15)

1. An optical knob device comprising:

a housing having an opening, the housing including a rim;

the reflecting piece is arranged on the inner surface of the shell;

a display panel which is positioned inside the shell, is exposed out of the opening and comprises a plurality of light-emitting elements; the method comprises the steps of,

at least one photosensitive element for sensing the light emitted by the first light emitting element and reflected by the reflecting member;

the light emitting element has a light emitting surface area gradually changed along the frame, the photosensitive element has a photosensitive surface area gradually changed along the frame or a photosensitive capacity, or the reflecting piece has a width gradually changed along the frame or a reflectivity, and the photosensitive element is positioned in a display unit array of the display panel or in a peripheral area of the display panel.

2. The optical knob device according to claim 1, wherein the number of the photosensitive elements is one, and the number of the first light emitting elements is one.

3. The optical knob device according to claim 2, wherein the reflective member has a width or reflectivity which is graded along its length.

4. The optical knob device according to claim 3, wherein the housing comprises a lower plate, the rim is connected to a periphery of the lower plate, and the reflecting member is located on the lower plate or the rim.

5. The optical knob device according to claim 4, wherein the housing further comprises an upper plate, a peripheral edge of the upper plate being connected to the rim, the opening being located in the upper plate, and the reflecting member being located on the upper plate, the lower plate or the rim.

6. The optical knob device according to claim 1, wherein the number of the photosensitive elements is one, and the number of the first light emitting elements is a plurality.

7. The optical knob device according to claim 6, wherein the front projection of the reflecting member onto the housing overlaps the front projection of the first light emitting element onto the housing.

8. The optical knob device according to claim 1, wherein the number of the photosensitive elements is plural, and the number of the first light emitting elements is one.

9. The optical knob device according to claim 8, wherein the front projection of the reflecting member onto the housing overlaps the front projection of the photosensitive element onto the housing.

10. The optical knob device according to claim 1, wherein the number of the photosensitive elements is plural, and the number of the first light emitting elements is plural.

11. The optical knob device according to claim 10, wherein the front projection of the reflecting member on the housing overlaps the front projection of one of the photosensitive elements and one of the first light emitting elements on the housing.

12. The optical knob device according to claim 1, wherein the display panel has a display area and a peripheral area, and the display area is exposed from the opening.

13. The optical knob device according to claim 12, wherein the first light emitting element is located in the display area or the peripheral area.

14. The optical knob device according to claim 1, wherein the display panel further comprises a plurality of scan lines, and the photosensitive element and the first light emitting element are electrically connected to the same scan line.

15. The optical knob device according to claim 1, wherein the reflectivity of the reflecting member is greater than the reflectivity of the housing.