Cover plate with self-adaptive screen brightness adjusting structure

Abstract

The utility model discloses a cover plate with a self-adaptive screen brightness adjusting structure, which comprises a cover plate main body and an FPC (Flexible Printed Circuit) plate body, an annular shielding ink layer is arranged on the outer ring of the cover plate main body, a photosensitive window is arranged on the shielding ink layer, a photosensitive unit is arranged at the lower part of the photosensitive window, and the FPC plate body is arranged on the FPC plate body. The photosensitive unit comprises a photosensitive glass substrate, a transparent front electrode layer is arranged on the upper surface of the photosensitive glass substrate, and an amorphous silicon layer is arranged on the upper surface of the transparent front electrode layer. By means of the light sensing unit below the light sensing open window, the light sensing unit can generate currents with different magnitudes under different ambient light, the change of the brightness of the ambient light and the change of the currents generated by the light sensing unit are in positive correlation, and therefore a main control chip of the screen assembly can calculate the change of the external ambient light by monitoring the change value of the currents. Finally, the brightness of the display screen is adjusted to match the ambient light brightness, and the overall power consumption is further reduced.

Description

Technical Field

[0001] The utility model relates to a cover plate, more specifically, to a cover plate with a structure for self-adapting screen brightness adjustment. Background Art

[0002] With the improvement of living standards, wearable devices such as bracelets / watches are becoming more and more common, and these products are integrating more and more functions. Most watches or bracelets on the market are equipped with light-sensing driver chips to adjust the brightness of the watch display in real time according to the ambient light, further saving the power consumption of the whole machine. Generally speaking, the conventional design scheme of display modules that adaptively adjust the screen brightness on the market is as follows: 1. First, SMT the light-sensing components on the FPC; 2. After folding the FPC, fix the light-sensing components on the back of the display module with double-sided tape to expose the light-sensing area of ​​the light-sensing components. However, the disadvantage of this design is that it requires the addition of special light-sensing components and SMT processes, which is costly. Moreover, the package of this light-sensing component itself is usually large and the component thickness is high. For example, the height of the light-sensing component LTR-308ALS-WA itself has reached 650um.

[0003] Chinese invention patent document CN109032741B discloses a terminal screen brightness adjustment method, characterized in that the terminal screen brightness adjustment method includes the following steps: monitoring whether the current terminal is running a game application; if so, obtaining the terminal ambient light intensity and game screen display information in real time when displaying the game screen; judging whether the change value of the terminal ambient light intensity exceeds a preset light intensity threshold; if the change value of the terminal ambient light intensity does not exceed the preset light intensity threshold, adjusting the screen brightness of the current terminal based on the game screen display information; the game screen display information includes: screen display color, game background color; adjusting the screen brightness of the current terminal based on the game screen display information includes: dividing the screen display color of the current game screen into regions to obtain color regions formed by the same color in the current game screen; judging whether the proportion of adjacent color regions with similar colors in all color regions exceeds the preset proportion threshold; if so, increasing the screen brightness of the current terminal, otherwise keeping the existing screen brightness unchanged.

[0004] Obviously, this patent uses software logic to control brightness and cannot solve the problem of packaging thickness of light-sensing components of existing wearable devices. Utility Model Content

[0005] Based on this, it is necessary to provide a cover plate with an adaptive screen brightness adjustment structure for the above technical problems. The cover plate with an adaptive screen brightness adjustment structure comprises a cover plate body and an FPC plate body, the FPC plate body is bound and connected to the cover plate body, the outer ring of the cover plate body is provided with an annular shielding ink layer, the shielding ink layer is provided with a photosensitive window, the lower part of the photosensitive window is provided with a photosensitive unit, the photosensitive unit comprises a photosensitive glass substrate, the upper surface of the photosensitive glass substrate is provided with a transparent front electrode layer, the upper surface of the transparent front electrode layer is provided with an amorphous silicon layer, the upper surface of the amorphous silicon layer is provided with a metal electrode layer, the upper surface of the metal electrode layer is provided with a protective layer, and the amorphous silicon layer is a magnetron sputtering film layer. Using the photosensitive unit below the photosensitive window, under different ambient light, the photosensitive unit will generate currents of different sizes, and the change in ambient light brightness is positively correlated with the change in current generated by the photosensitive unit. In this way, the main control chip of the screen assembly can calculate the change in external ambient light by monitoring the change in current value, and finally adjust the brightness of the display screen to match the ambient light brightness, further reducing the power consumption of the whole machine.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A cover plate with an adaptive screen brightness adjustment structure, characterized in that the cover plate with the adaptive screen brightness adjustment structure comprises a cover plate body and an FPC plate body, the FPC plate body is bound and connected to the cover plate body, the outer ring of the cover plate body is provided with an annular shielding ink layer, the shielding ink layer is provided with a photosensitive window, the lower part of the photosensitive window is provided with a photosensitive unit, the photosensitive unit comprises a photosensitive glass substrate, a transparent front electrode layer is provided on the upper surface of the photosensitive glass substrate, an amorphous silicon layer is provided on the upper surface of the transparent front electrode layer, a metal electrode layer is provided on the upper surface of the amorphous silicon layer, a protective layer is provided on the upper surface of the metal electrode layer, and the amorphous silicon layer is a magnetron sputtering film layer.

[0008] As a preferred embodiment of the cover plate with adaptive screen brightness adjustment structure provided by the utility model, the photosensitive unit includes a positive electrode PAD and a negative electrode PAD, the extension area of ​​the positive electrode PAD is larger than that of the negative electrode PAD, the FPC board includes an FPC body, a bending area is provided in the middle of the FPC body, an arc-shaped through bending opening is provided on the bending area, a connector is provided at the tail of the FPC body, and a positive binding head and a negative binding head are provided at the head of the FPC body, the positive binding head is bound and connected to the positive electrode PAD, and the negative binding head is bound and connected to the negative electrode PAD.

[0009] As a preferred implementation of the cover plate with a structure for self-adapting screen brightness adjustment provided by the utility model, the bending area is coated with green oil.

[0010] As a preferred implementation of the cover plate with a structure for adaptively adjusting screen brightness provided by the utility model, the shielding ink layer is black.

[0011] As a preferred implementation of the cover plate with a structure for adaptively adjusting screen brightness provided by the utility model, the photosensitive glass substrate and the glass substrate of the cover plate body are an integrated structure.

[0012] As a preferred implementation of the cover plate with a structure for adaptively adjusting screen brightness provided by the utility model, the photosensitive glass substrate and the glass substrate of the cover plate body are separate structures.

[0013] As a preferred implementation of the cover plate with a structure for adaptively adjusting screen brightness provided by the utility model, the thickness of the photosensitive unit is 2 microns to 8 microns.

[0014] As a preferred implementation of the cover plate with a structure for adaptively adjusting screen brightness provided by the utility model, the thickness of the photosensitive unit is 5 microns.

[0015] As a preferred implementation of the cover plate with a structure for adaptively adjusting screen brightness provided by the utility model, the bending opening is in a "U" shape, and a reinforcement layer is provided on the back of the connector.

[0016] As a preferred implementation of the cover plate with a structure for adaptively adjusting screen brightness provided by the utility model, a touch ITO pattern layer is provided on the visible area of ​​the cover plate body.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model provides a cover plate with a structure for adaptively adjusting screen brightness. The photosensitive unit below the photosensitive window is used. Under different ambient light conditions, the photosensitive unit will generate currents of different sizes. The change in ambient light brightness is positively correlated with the change in current generated by the photosensitive unit. In this way, the cover plate and the display screen form a screen assembly, and the FPC board is connected to the main control chip of the screen assembly. The main control chip of the screen assembly can calculate the change in external ambient light by monitoring the change in current, and finally adjust the brightness of the display screen to match the ambient light brightness, thereby further reducing the power consumption of the whole machine. Since the extended area of ​​the positive electrode PAD is larger than that of the negative electrode PAD, it plays a fool-proof role, prevents workers from installing incorrectly, and has good reliability. Since the photosensitive unit 3 is no longer arranged on the FPC, the package thickness can be significantly reduced.

[0019] In addition, the photosensitive glass substrate and the glass substrate of the cover body can be made into a discrete structure. Since the photosensitive glass substrate and the glass substrate of the cover body are discrete structures, the photosensitive glass substrate can be processed independently. Once the photosensitive unit is damaged, the entire photosensitive unit can be directly replaced, and the maintenance cost is low.

[0020] In addition, a reinforcing layer can be provided on the back of the connector. The reinforcing layer can effectively improve the connection strength of the connector and the reliability of the FPC board. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 This is a schematic diagram of the cover structure with a structure for adaptively adjusting screen brightness of the utility model, which is a front viewing angle at this time;

[0023] Figure 2 for Figure 1 A schematic diagram of the structure of the cover with a structure for adaptively adjusting screen brightness, in this case from the rear viewing angle;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure of the FPC board body of the cover plate with a structure for adaptively adjusting screen brightness, at this time from the back viewing angle;

[0025] Figure 4 for Figure 3 A schematic diagram of the structure of the FPC board body of the cover plate with a structure for adaptively adjusting screen brightness, front viewing angle at this time;

[0026] Figure 5 for Figure 1 A schematic diagram of the hierarchical structure of the photosensitive unit of the cover structure with the structure for adaptively adjusting screen brightness;

[0027] The markings in the figure are as follows: 1. Cover body; 2. Shielding ink layer; 21. Photosensitive window; 3. Photosensitive unit; 31. Photosensitive glass substrate; 32. Transparent front electrode layer; 33. Amorphous silicon layer; 34. Metal electrode layer; 35. Protective layer; 4. FPC board; 40. FPC body; 41. Bending area; 42. Bending opening; 43. Connector; 44. Reinforcement layer; 45. Positive electrode binding head; 46. Negative electrode binding head. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0029] As described in the background technology, for wearable devices, with the improvement of living standards, wearable devices such as bracelets / watches are becoming more and more common, and these products have more and more integrated functions. Most of the watches or bracelets on the market are equipped with light-sensing driver chips to adjust the brightness of the watch display in real time according to the ambient light, further saving the power consumption of the whole machine. Generally speaking, the conventional design scheme of the display module that adaptively adjusts the screen brightness on the market is as follows: 1. First, SMT the light-sensing components on the FPC; 2. After the FPC is folded back, the light-sensing components are fixed on the back of the display module through double-sided tape to expose the light-sensing area of ​​the light-sensing components. However, the disadvantage of such a design is that it requires the addition of special light-sensing components and SMT processes, which is costly, and usually the package of such light-sensing components itself is relatively large and the component thickness is relatively high. For example, the height of the light-sensing component LTR-308ALS-WA itself has reached 650um.

[0030] In order to solve this technical problem, the utility model provides a cover plate with a structure for adaptively adjusting screen brightness, comprising a cover plate body 1 and an FPC plate body 4, wherein the FPC plate body 4 is bound and connected to the cover plate body 1, and an annular shielding ink layer 2 is provided on the outer ring of the cover plate body 1, and a photosensitive window 21 is provided on the shielding ink layer 2, and a photosensitive unit 3 is provided at the lower part of the photosensitive window 21, and the photosensitive unit 3 comprises a photosensitive glass substrate 31, and a transparent front electrode layer 32 is provided on the upper surface of the photosensitive glass substrate 31, and an amorphous silicon layer 33 is provided on the upper surface of the transparent front electrode layer 32, and a metal electrode layer 34 is provided on the upper surface of the amorphous silicon layer 33, and a protective layer 35 is provided on the upper surface of the metal electrode layer 34. The amorphous silicon layer 33 is a magnetron sputtering film layer.

[0031] Through the above structural design, the photosensitive unit 3 below the photosensitive window 21 is used. Under different ambient light conditions, the photosensitive unit 3 will generate currents of different sizes. The change in ambient light brightness is positively correlated with the change in current generated by the photosensitive unit 3. In this way, the cover plate and the display screen form a screen assembly, and the FPC board is connected to the main control chip of the screen assembly. The main control chip of the screen assembly can calculate the change in external ambient light by monitoring the change in current, and finally adjust the brightness of the display screen to match the ambient light brightness, further reducing the power consumption of the whole machine. Since the extension area of ​​the positive electrode PAD36 is larger than that of the negative electrode PAD37, it plays a fool-proof role, preventing workers from installing incorrectly, and has good reliability.

[0032] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] like Figure 1 , Figure 2 and Figure 3 As shown, the cover with an adaptive screen brightness adjustment structure includes a cover body 1 and an FPC board 4, the FPC board 4 is bound and connected to the cover body 1, the outer circle of the cover body 1 is provided with an annular shielding ink layer 2, the shielding ink layer 2 is provided with a photosensitive window 21, the lower part of the photosensitive window 21 is provided with a photosensitive unit 3, the photosensitive unit 3 includes a photosensitive glass substrate 31, a transparent front electrode layer 32 is provided on the upper surface of the photosensitive glass substrate 31, an amorphous silicon layer 33 is provided on the upper surface of the transparent front electrode layer 32, a metal electrode layer 34 is provided on the upper surface of the amorphous silicon layer 33, and a protective layer 35 is provided on the upper surface of the metal electrode layer 34.

[0036] It should be noted that the amorphous silicon layer 33 is a magnetron sputtering film layer.

[0037] The photosensitive unit 3 includes a positive electrode PAD36 and a negative electrode PAD37, wherein the positive electrode PAD36 is connected to the transparent front electrode layer 32, and the negative electrode PAD37 is connected to the metal electrode layer 34. The extension area of ​​the positive electrode PAD36 is larger than that of the negative electrode PAD37. The FPC board 4 includes an FPC body 40, wherein a bending area 41 is provided in the middle of the FPC body 40, and an arc-shaped through-bending opening 42 is provided on the bending area 41, and a connector 43 is provided at the tail of the FPC body 40, and a positive electrode binding head 45 and a negative electrode binding head 46 are provided at the head of the FPC body 40, wherein the positive electrode binding head 45 is bound and connected to the positive electrode PAD36, and the negative electrode binding head 46 is bound and connected to the negative electrode PAD37.

[0038] It should be noted that the bending area 41 is coated with green oil, and the copper wiring in the area covered by the green oil cannot be exposed.

[0039] In addition, the shielding ink layer 2 is black.

[0040] In addition, the photosensitive glass substrate 31 is an integrated structure with the glass substrate of the cover body 1 , which simplifies the processing technology. In one embodiment, the shielding ink layer 2 and the photosensitive unit 3 are located on different sides of the cover body 1 .

[0041] In addition, the thickness of the photosensitive unit 3 is 2 micrometers to 8 micrometers. Preferably, the thickness of the photosensitive unit 3 is 5 micrometers.

[0042] The bent opening 42 is in a U-shape.

[0043] The working mode of this embodiment is described below.

[0044] By using the photosensitive unit 3 under the photosensitive window 21, the photosensitive unit 3 will generate currents of different sizes under different ambient light conditions. The change in ambient light brightness is positively correlated with the change in current generated by the photosensitive unit 3. In this way, the main control chip of the screen assembly can calculate the change in external ambient light by monitoring the change in current, and finally adjust the brightness of the display screen to match the ambient light brightness, further reducing the power consumption of the whole machine. Since the extended area of ​​the positive electrode PAD36 is larger than that of the negative electrode PAD37, it plays a fool-proof role, preventing workers from installing incorrectly, and has good reliability. Since the photosensitive unit 3 is no longer set on the FPC, the package thickness can be significantly reduced.

[0045] The cover plate with the structure for adaptively adjusting screen brightness provided in Example 1 is further optimized. Specifically, the photosensitive glass substrate 31 and the glass substrate of the cover plate body 1 are separate structures.

[0046] The working mode of this embodiment is described below.

[0047] Since the photosensitive glass substrate 31 and the glass substrate of the cover body 1 are separate structures, the photosensitive glass substrate 31 can be processed independently. Once the photosensitive unit 3 is damaged, the entire photosensitive unit 3 can be directly replaced, and the maintenance cost is low.

[0048] The cover plate with the structure for adaptively adjusting screen brightness provided in Example 1 or 2 is further optimized. Specifically, a reinforcing layer 44 is provided on the back of the connector 43 .

[0049] The working mode of this embodiment is described below.

[0050] By using the reinforcing layer 44, the connection strength of the connector 43 can be effectively improved, and the reliability of the FPC board 4 can be improved. By using the reinforcing layer 44, the connection strength of the connector 43 can be effectively improved, and the reliability of the FPC board 4 can be improved.

[0051] The cover plate with the structure for adaptively adjusting screen brightness provided in Example 1 or 2 is further optimized. Specifically, a touch ITO pattern layer is provided on the visible area of ​​the cover plate body 1.

[0052] The working mode of this embodiment is described below.

[0053] The touch function of the cover body 1 can be realized by utilizing the touch ITO pattern layer on the visible area of ​​the cover body 1 .

[0054] The terms "coupling" and "coupling" involved in the embodiments of the present application should be understood in a broad sense. For example, they may refer to a direct physical connection, or an indirect connection achieved through electronic devices, such as a connection achieved through resistors, inductors, capacitors or other electronic devices.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A cover with a structure for adaptively adjusting screen brightness, It is characterized in that The cover plate with a structure for adaptively adjusting screen brightness comprises a cover plate body (1) and an FPC plate body (4), wherein the FPC plate body (4) is bound and connected to the cover plate body (1), an annular shielding ink layer (2) is provided on the outer ring of the cover plate body (1), a photosensitive window (21) is provided on the shielding ink layer (2), a photosensitive unit (3) is provided at the lower part of the photosensitive window (21), the photosensitive unit (3) comprises a photosensitive glass substrate (31), a transparent front electrode layer (32) is provided on the upper surface of the photosensitive glass substrate (31), an amorphous silicon layer (33) is provided on the upper surface of the transparent front electrode layer (32), a metal electrode layer (34) is provided on the upper surface of the amorphous silicon layer (33), a protective layer (35) is provided on the upper surface of the metal electrode layer (34), and the amorphous silicon layer (33) is a magnetron sputtering film layer.

2. The cover plate with a structure for adaptively adjusting screen brightness according to claim 1, It is characterized in that The photosensitive unit (3) comprises a positive electrode PAD (36) and a negative electrode PAD (37), the extension area of ​​the positive electrode PAD (36) is larger than that of the negative electrode PAD (37), the FPC board (4) comprises an FPC body (40), a bending area (41) is provided in the middle of the FPC body (40), an arc-shaped through-bending opening (42) is provided on the bending area (41), a connector (43) is provided at the tail of the FPC body (40), and a positive electrode binding head (45) and a negative electrode binding head (46) are provided at the head of the FPC body (40), the positive electrode binding head (45) is bound and connected to the positive electrode PAD (36), and the negative electrode binding head (46) is bound and connected to the negative electrode PAD (37).

3. The cover plate with a structure for adaptively adjusting screen brightness according to claim 2, It is characterized in that The bending area (41) is coated with green oil.

4. The cover plate with a structure for adaptively adjusting screen brightness according to claim 1, It is characterized in that The masking ink layer (2) is black.

5. The cover plate with a structure for adaptively adjusting screen brightness according to claim 1, It is characterized in that The photosensitive glass substrate (31) and the glass substrate of the cover plate main body (1) are an integrated structure.

6. The cover plate with a structure for adaptively adjusting screen brightness according to claim 1, It is characterized in that The photosensitive glass substrate (31) and the glass substrate of the cover plate main body (1) are separate structures.

7. The cover plate with a structure for adaptively adjusting screen brightness according to claim 1, It is characterized in that The photosensitive unit (3) has a thickness of 2 micrometers to 8 micrometers.

8. The cover plate with a structure for adaptively adjusting screen brightness according to claim 7, It is characterized in that The thickness of the photosensitive unit (3) is 5 micrometers.

9. The cover plate with a structure for adaptively adjusting screen brightness according to claim 2, It is characterized in that The bent opening (42) is in a U-shape, and a reinforcing layer (44) is provided on the back side of the connector (43).

10. The cover plate with a structure for adaptively adjusting screen brightness according to claim 2, It is characterized in that A touch-sensitive ITO pattern layer is provided on the visible area of ​​the cover plate body (1).

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