Display assembly with embedded light sensation function

Abstract

The utility model discloses a display assembly with an embedded light sensation function, which comprises a display screen body and a display screen FPC (Flexible Printed Circuit), the display screen body is connected with the display screen FPC through a TP FPC, and a film-shaped photoreceptor is arranged on the upper surface of the display screen body. When the photoreceptor is illuminated, a hole-electron pair is excited, electrons and holes are respectively led out under the action of an internal electric field, a loop is switched on, and current is generated. Under different ambient light, the photoreceptor can generate currents with different magnitudes, and the change of the brightness of the ambient light and the change of the current generated by the photoreceptor are positively correlated, so that the main control chip can calculate the change of the external ambient light by monitoring the change value of the current, and finally the brightness of the display screen is adjusted to match the ambient light. The photoreceptor is embedded in the display screen body, so that the cost is effectively reduced, the stacking thickness is optimized, and the display screen is particularly suitable for wearable products due to lightening and thinning of products.

Description

Technical Field

[0001] The utility model relates to a display component, more specifically, to a display component with a built-in light sensing function. Background Art

[0002] With the improvement of living standards, wearable devices such as bracelets / watches are becoming more and more common. The functions integrated in the products are also increasing. Most of the watches / 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. 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 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. 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 light-sensing component LTR-308ALS-WA has a height of 650um. The stacking thickness is too large.

[0003] Chinese utility model patent document CN201174228Y discloses a display capable of automatically adjusting brightness and color temperature, comprising a display and a CPU arranged on a display mainboard, and characterized in that it also comprises a photosensitive element and a temperature sensor, wherein the photosensitive element and the temperature sensor are arranged on a surface of the display, and output ends of the photosensitive element and the temperature sensor are respectively connected to the CPU arranged on the display mainboard.

[0004] Obviously, the display in this patent can automatically adjust the brightness and color temperature of the display screen according to the surrounding brightness and temperature, so that the contrast between the display and the surrounding environment to the user's visual perception is dynamically reduced. However, this structure still has the problem of excessive stacking thickness. Utility Model Content

[0005] Based on this, it is necessary to provide a display component with an embedded light sensing function for the above technical problems. The display component with an embedded light sensing function includes a display screen body and a display screen FPC. The display screen body is connected to the display screen FPC through a TP FPC. A film-shaped photoreceptor is provided on the upper surface of the display screen body. A display screen body FPC binding position is provided on the display screen body, and the display screen body FPC binding position is bound to the display screen FPC through an ACF. The photoreceptor includes a display screen glass substrate. A transparent front electrode is provided on the upper surface of the display screen glass substrate. An amorphous silicon layer is provided on the upper surface of the transparent front electrode. 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. The film-shaped photoreceptor directly converts light into electrical energy by making a photovoltaic layer on the surface of the display screen glass substrate and utilizing the photoelectric effect. When the photoreceptor is exposed to light, hole-electron pairs are excited. Under the action of the internal electric field, the electrons and holes are respectively led out and connected to the circuit to generate current. Under different ambient light conditions, the photoreceptor will generate currents of different magnitudes. The change in ambient light brightness is positively correlated with the change in current generated by the photoreceptor. Therefore, the main control chip 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. The photoreceptor is embedded in the display body, which effectively reduces costs and optimizes the stacking thickness. It is particularly suitable for wearable products by taking advantage of the thinness of the product.

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

[0007] A display component with an embedded light sensing function, characterized in that the display component with an embedded light sensing function comprises a display screen body and a display screen FPC, the display screen body is connected to the display screen FPC via a TP FPC, and a film-shaped photoreceptor is provided on the upper surface of the display screen body.

[0008] As a preferred implementation of the display component with built-in light sensing function provided by the utility model, a display screen body FPC binding position is provided on the display screen body, and the display screen body FPC binding position is bound to the display screen FPC through ACF.

[0009] As a preferred embodiment of the display component with embedded photosensing function provided by the utility model, the photoreceptor includes a display glass substrate, a transparent front electrode is provided on the upper surface of the display glass substrate, an amorphous silicon layer is provided on the upper surface of the transparent front electrode, a metal electrode layer is provided on the upper surface of the amorphous silicon layer, and a protective layer is provided on the upper surface of the metal electrode layer.

[0010] As a preferred implementation of the display component with built-in light sensing function provided by the utility model, the protective layer is transparent.

[0011] As a preferred implementation of the display component with built-in light sensing function provided by the utility model, the thickness of the light sensor is 3 microns to 6 microns.

[0012] As a preferred implementation of the display component with built-in light sensing function provided by the utility model, the thickness of the photoreceptor is 5 microns.

[0013] As a preferred implementation of the display component with built-in light sensing function provided by the utility model, the photoreceptor is located at the 12 o'clock position of the display screen body, and the FPC binding position of the display screen body is located at the 6 o'clock position of the display screen body.

[0014] As a preferred implementation of the display component with built-in light sensing function provided by the utility model, the light sensor is in the shape of a water drop.

[0015] As a preferred implementation of the display component with built-in light sensing function provided by the utility model, the light sensor is located at the periphery of the display screen body.

[0016] As a preferred implementation of the display component with built-in light sensing function provided by the utility model, the photoreceptors are symmetrically arranged on both sides of the display screen body.

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

[0018] The utility model provides a display component with an embedded light sensing function. The film-shaped photoreceptor directly converts light into electrical energy by making a photovoltaic layer on the surface of the glass substrate of the display screen and utilizing the photoelectric effect. When the photoreceptor is exposed to light, hole-electron pairs are excited. Under the action of the internal electric field, the electrons and holes are respectively led out and connected to the circuit to generate current. Under different ambient light, the photoreceptor will generate currents of different sizes. The change in ambient light brightness is positively correlated with the change in current generated by the photoreceptor. Therefore, the main control chip 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. The photoreceptor is embedded in the display screen body, which effectively reduces the cost and optimizes the stacking thickness. It is particularly suitable for wearable products by utilizing the thinness of the product.

[0019] In addition, the photoreceptor can be located at the periphery of the display screen body. Since the photoreceptor is located at the periphery of the display screen body, a gate shape is formed, which can effectively expand the viewing area of ​​the display screen body and provide a display effect.

[0020] In addition, the photoreceptors can be symmetrically arranged on both sides of the display screen body. By using symmetrically arranged photoreceptors, the light sensitivity balance of the photoreceptors can be improved, so that a more accurate judgment of the ambient light can be made, and the accuracy of brightness adjustment of the display screen can be improved. 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 It is a schematic diagram of the structure of a display component with built-in light sensing function of the utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of the hierarchical structure of a photoreceptor of a display component with an embedded photosensitive function;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of another embodiment of the display component with built-in light sensing function of the utility model;

[0025] Figure 4 It is a three-dimensional structural schematic diagram of another embodiment of the display component with built-in light sensing function of the utility model;

[0026] The markings in the figure are as follows: 1. display screen body; 11. display screen body FPC binding position; 2. photoreceptor; 21. display screen glass substrate; 22. transparent front electrode; 23. amorphous silicon layer; 24. metal electrode layer; 25. protective layer; 3. TP FPC; 4. display screen FPC. DETAILED DESCRIPTION

[0027] 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.

[0028] 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. The functions integrated in the products are also increasing. Most of the watch / bracelet machines on the market are equipped with light-sensing driver chips to adjust the brightness of the watch display screen in real time according to the ambient light, further saving the power consumption of the whole machine. 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. The disadvantage of this design is that it is necessary to add 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 light-sensing component LTR-308ALS-WA has a height of 650um. The stacking thickness is too large.

[0029] In order to solve this technical problem, the utility model provides a display component with an embedded light sensing function, comprising a display screen body 1 and a display screen FPC4, wherein the display screen body 1 is connected to the display screen FPC4 via a TP FPC3, and a film-shaped photoreceptor 2 is provided on the upper surface of the display screen body 1. A display screen body FPC binding position 11 is provided on the display screen body 1, and the display screen body FPC binding position 11 is bound to the display screen FPC4 via an ACF. The photoreceptor 2 comprises a display screen glass substrate 21, wherein a transparent front electrode 22 is provided on the upper surface of the display screen glass substrate 21, wherein an amorphous silicon layer 23 is provided on the upper surface of the transparent front electrode 22, wherein a metal electrode layer 24 is provided on the upper surface of the amorphous silicon layer 23, and a protective layer 25 is provided on the upper surface of the metal electrode layer 24.

[0030] Through the above structural design, the film-shaped photoreceptor 2 directly converts light into electrical energy by making a photovoltaic layer on the surface of the display glass substrate 21, using the photoelectric effect. When the photoreceptor 2 is exposed to light, hole-electron pairs are excited. Under the action of the internal electric field, the electrons and holes are respectively led out and connected to the circuit to generate current. Under different ambient light, the photoreceptor 2 will generate currents of different sizes. The change in ambient light brightness is positively correlated with the change in current generated by the photoreceptor 2. Therefore, the main control chip 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. The photoreceptor 2 is embedded in the display body 1, which effectively reduces the cost and optimizes the stacking thickness. It is particularly suitable for wearable products by taking advantage of the thinness of the product.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Example 1

[0035] like Figure 1 and Figure 2 As shown, the display component with built-in light sensing function includes a display screen body 1 and a display screen FPC4. The display screen body 1 is connected to the display screen FPC4 via a TP FPC3. A film-shaped photoreceptor 2 is provided on the upper surface of the display screen body 1.

[0036] It should be noted that the display screen body 1 is provided with a display screen body FPC binding position 11, and the display screen body FPC binding position 11 is bound to the display screen FPC 4 through ACF.

[0037] like Figure 2 As shown, the photoreceptor 2 includes a display glass substrate 21, a transparent front electrode 22 is provided on the upper surface of the display glass substrate 21, an amorphous silicon layer 23 is provided on the upper surface of the transparent front electrode 22, a metal electrode layer 24 is provided on the upper surface of the amorphous silicon layer 23, and a protective layer 25 is provided on the upper surface of the metal electrode layer 24.

[0038] It should be noted that the protection layer 25 is transparent.

[0039] In addition, the thickness of the photoreceptor 2 is 3 micrometers to 6 micrometers. Preferably, the thickness of the photoreceptor 2 is 5 micrometers.

[0040] In addition, the photoreceptor 2 is located at the 12 o'clock position of the display screen body 1. The display screen body FPC binding position 11 is located at the 6 o'clock position of the display screen body 1.

[0041] In addition, the photoreceptor 2 has a water drop shape.

[0042] The working mode of this embodiment is described below.

[0043] The film-shaped photoreceptor 2 directly converts light into electrical energy by making a photovoltaic layer on the surface of the display glass substrate 21, using the photoelectric effect. When the photoreceptor 2 is exposed to light, hole-electron pairs are excited. Under the action of the internal electric field, the electrons and holes are respectively led out and connected to the circuit to generate current. Under different ambient light, the photoreceptor 2 will generate currents of different sizes. The change in ambient light brightness is positively correlated with the change in current generated by the photoreceptor 2. Therefore, the main control chip 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. The photoreceptor 2 is embedded in the display body 1, which effectively reduces the cost and optimizes the stacking thickness. It is particularly suitable for wearable products by taking advantage of the thinness of the product.

[0044] Example 2

[0045] like Figure 3 As shown, the display component with built-in light sensing function provided in Example 1 is further optimized. Specifically, the light sensor 2 is located at the periphery of the display screen body 1.

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

[0047] Since the photoreceptor 2 is located at the periphery of the display screen body 1, forming a gate shape, the viewing area of ​​the display screen body 1 can be effectively expanded to provide a display effect.

[0048] Example 3

[0049] like Figure 4 As shown, the display component with built-in light sensing function provided by embodiment 1 or 2 is further optimized. Specifically, the light sensor 2 is symmetrically arranged on both sides of the display screen body 1.

[0050] The working mode of this embodiment is described below.

[0051] By using the symmetrically arranged photoreceptors 2, the light sensitivity balance of the photoreceptors 2 can be improved, so that a more accurate judgment of the ambient light can be made, and the accuracy of brightness adjustment of the display screen can be improved.

[0052] 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.

[0053] 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.

[0054] 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 display component with built-in light sensing function, characterized in that: The display component with built-in light sensing function comprises a display screen body (1) and a display screen FPC (4); the display screen body (1) is connected to the display screen FPC (4) via a TP FPC (3); and a film-shaped photoreceptor (2) is provided on the upper surface of the display screen body (1).

2. The display component with built-in light sensing function according to claim 1, characterized in that: The display screen body (1) is provided with a display screen body FPC binding position (11), and the display screen body FPC binding position (11) is bound to the display screen FPC (4) via an ACF.

3. The display component with built-in light sensing function according to claim 1, characterized in that: The photoreceptor (2) comprises a display screen glass substrate (21); a transparent front electrode (22) is provided on the upper surface of the display screen glass substrate (21); an amorphous silicon layer (23) is provided on the upper surface of the transparent front electrode (22); a metal electrode layer (24) is provided on the upper surface of the amorphous silicon layer (23); and a protective layer (25) is provided on the upper surface of the metal electrode layer (24).

4. The display component with built-in light sensing function according to claim 3, characterized in that: The protective layer (25) is transparent.

5. The display component with built-in light sensing function according to claim 1, characterized in that: The thickness of the photoreceptor (2) is 3 micrometers to 6 micrometers.

6. The display component with built-in light sensing function according to claim 5, characterized in that: The thickness of the photoreceptor (2) is 5 micrometers.

7. The display component with built-in light sensing function according to claim 2, characterized in that: The photoreceptor (2) is located at the 12 o'clock position of the display screen body (1), and the display screen body FPC binding position (11) is located at the 6 o'clock position of the display screen body (1).

8. The display component with built-in light sensing function according to claim 1, characterized in that: The photoreceptor (2) is in the shape of a water drop.

9. The display component with built-in light sensing function according to claim 1, characterized in that: The photoreceptor (2) is located on the periphery of the display screen body (1).

10. The display component with built-in light sensing function according to claim 1, characterized in that: The photoreceptors (2) are symmetrically arranged on both sides of the display screen body (1).

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