Display screen and electronic equipment

Abstract

The invention provides a display screen and electronic equipment, and relates to the field of electronic equipment. The display screen comprises a solar cell and a display panel; the display panel comprises a substrate and a display layer which are arranged in a stacked mode, the solar cell is arranged on the side, facing the display layer, of the substrate, and the solar cell is used for converting solar energy into electric energy; the display layer comprises a light-emitting layer, the light-emitting layer comprises a plurality of light-emitting sub-pixels, the solar cell comprises a first part, and the projection of the first part on the light-emitting layer is located in gaps of the light-emitting sub-pixels. Therefore, the solar energy can be converted into the electric energy to be stored, the endurance time of the electronic equipment is prolonged, and solar charging is realized.

Description

Technical Field

[0001] This application relates to the field of electronic devices, and more particularly to a display screen and an electronic device. Background Technology

[0002] With technological advancements, electronic products equipped with display modules are becoming increasingly diverse, such as mobile phones, tablets, smartwatches, and smart backpacks. Electronic products operate on electrical energy, and by pre-charging their batteries, they can extend their battery life without being plugged in. Therefore, the battery life of electronic devices is limited by their battery capacity.

[0003] If electronic devices can convert solar energy into electrical energy for storage when used outdoors, it will increase the battery life of the electronic devices and even enable solar charging. Summary of the Invention

[0004] This application provides a display screen and an electronic device that can convert solar energy into electrical energy for storage, thereby increasing the battery life of the electronic device and enabling solar charging.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] In a first aspect, a display screen is provided, comprising: a solar cell and a display panel; the display panel includes: a substrate and a display layer stacked together, the solar cell being disposed on the side of the substrate facing the display layer, the solar cell being used to convert solar energy into electrical energy; the display layer includes: a light-emitting layer, the light-emitting layer including a plurality of light-emitting sub-pixels, the solar cell including: a first portion, the projection of the first portion onto the light-emitting layer being located in the gaps between the light-emitting sub-pixels. The display screen is used in electronic devices such as mobile phones and sports watches, and the electronic devices also include components such as control chips and batteries. The battery is used to power the display screen, control chips, and other components.

[0007] In this way, solar cells can convert solar energy into electrical energy, directly powering electronic devices such as displays and control chips, or storing electrical energy in batteries to power electronic devices, thereby improving the battery life of electronic devices. Simultaneously, because the projection of the first part of the solar cell onto the light-emitting layer is located within the gaps between the light-emitting sub-pixels, solar energy can be converted into electrical energy without affecting the normal light output of the display, resulting in excellent performance.

[0008] In one possible implementation of the first aspect, the display layer further includes a driving circuit disposed on the side of the light-emitting layer facing the substrate. The driving circuit includes a thin-film transistor (TFT), which includes an active layer. The solar cell is disposed on the same layer as the active layer. This allows the solar cell and the active layer to be fabricated in the same surface layer process, facilitating fabrication.

[0009] In one possible implementation of the first aspect, the solar cell and the active layer are made of the same material. This simplifies the fabrication process. Furthermore, using the same material to fabricate the co-located active layer and solar cell optimizes the interface, reduces charge degradation of the composite material at the interface, and thus improves the photoelectric conversion efficiency of the solar cell.

[0010] In one possible implementation of the first aspect, both the active layer and the solar cell are made of low-temperature polycrystalline silicon. Using low-temperature polycrystalline silicon to fabricate the solar cell can improve its absorption rate of sunlight.

[0011] In one possible implementation of the first aspect, the solar cell and the active layer are fabricated using the same photomask. This reduces processing costs.

[0012] In one possible implementation of the first aspect, the display layer includes a first planarization layer disposed on the substrate side of the light-emitting layer, and the solar cell is disposed within the first planarization layer. Thus, the solar cell can be aligned and planarized using the first planarization layer without the need for a separate new film layer for planarization, simplifying the manufacturing process.

[0013] In one possible implementation of the first aspect, the display layer includes: a pixel definition layer with an opening, a light-emitting sub-pixel placed in the opening, and a solar cell disposed within the pixel definition layer. That is, the solar cell and the pixel definition layer are disposed in the same layer, with the solar cell located within the pixel definition layer in the area excluding the opening, thus avoiding shading of the light-emitting sub-pixel. Therefore, the solar cell and the pixel definition layer can be fabricated in the same surface layer process, facilitating fabrication.

[0014] In one possible implementation of the first aspect, the solar cell further includes a second portion connected to the first portion, the second portion being located on the side of the light-emitting layer facing the substrate, and the projection of the second portion onto the light-emitting layer coinciding with the light-emitting sub-pixel. That is, when the solar cell is located on the side of the light-emitting layer facing the substrate, the solar cell does not need to avoid the light-emitting sub-pixel, thus increasing the light absorption area of ​​the solar cell.

[0015] In one possible implementation of the first aspect, the display screen further includes a touch layer; the touch layer is disposed on the side of the display layer away from the substrate, and the touch layer includes touch traces. The touch layer enables the display screen to both convert solar energy into electrical energy and achieve touch control, providing rich functionality.

[0016] In one possible implementation of the first aspect, the solar cell and the touch wiring are arranged in the same layer. The touch layer also includes a filler material. Therefore, the filler material of the touch layer can be used to planarize the solar cell, improving the overall structural integrity of the display screen.

[0017] In one possible implementation of the first aspect, the display screen further includes a second planarization layer disposed between the touch layer and the display layer, and the solar cell is disposed within the second planarization layer. Thus, the solar cell can be planarized using the second planarization layer, improving the overall structural integrity of the display screen.

[0018] In one possible implementation of the first aspect, the first part has a first opening, and the projection of the touch trace onto the solar cell lies within the first opening. In some cases, during the process of the solar cell absorbing light energy and converting it into electrical energy, it may interfere with the electric field around the touch trace, increasing the parasitic capacitance of the touch functional layer and affecting the touch performance of the display screen. Therefore, by placing the projection of the touch trace onto the solar cell within the first opening, the touch trace can be avoided, mitigating the impact of the solar cell on the touch layer.

[0019] In one possible implementation of the first aspect, when the display screen includes a touch layer, the touch layer includes touch traces and a filling material, wherein the filling material is an insulating barrier material. That is, when the touch layer is an external touch layer, the operation of the solar cell will not affect the touch traces due to the insulating barrier effect of the filling material. Therefore, the solar cell can also avoid obstructing the touch traces to obtain a larger light-absorbing area.

[0020] In one possible implementation of the first aspect, the display screen further includes a color filter layer disposed on the side of the touch layer away from the substrate. The projection of light-emitting sub-pixels on the color filter layer, including light-shielding portions, is located within the area enclosed by the light-shielding portions. The presence of the color filter layer improves the display effect of the display screen.

[0021] In one possible implementation of the first aspect, when the display screen includes a color filter layer, the solar cell is disposed within the color filter layer, and a second opening is provided on the first portion, the second opening surrounding the light-shielding portion. This allows the light-shielding portion to be avoided, improving the display effect.

[0022] In one possible implementation of the first aspect, when the display screen includes a touch layer and a color filter layer, the solar cell is disposed within the color filter layer. A first opening and a second opening are provided on the first portion, and the projection of the touch trace onto the solar cell is located within the first opening. The second opening surrounds the light-shielding portion. This allows for simultaneous avoidance of the light-shielding portion and the touch trace, improving both the display and touch performance of the screen.

[0023] In one possible implementation of the first aspect, when the display screen includes a color filter layer, the solar cell is disposed on the side of the color filter layer opposite to the display layer. Therefore, the solar cell does not need to avoid the light-shielding portion, increasing the area of ​​the solar cell.

[0024] In one possible implementation of the first aspect, the display screen further includes a cover plate disposed on the side of the display layer facing away from the substrate, and solar cells disposed on the surface of the cover plate facing away from the substrate. Thus, the solar cells are in direct contact with sunlight, resulting in high light absorption efficiency.

[0025] In one possible implementation of the first aspect, when the display screen includes a touch layer and a color filter layer, the display screen further includes a cover plate disposed on the side of the display layer away from the substrate, and a solar cell disposed on the surface of the cover plate away from the substrate. In this case, compared to the solar cell being on the same layer as the color filter layer, the solar cell does not need to avoid the light-shielding portion. Simultaneously, the solar cell is located on the outermost side of the display screen away from the substrate, allowing it to directly contact sunlight and resulting in high light absorption efficiency.

[0026] In one possible implementation of the first aspect, the display screen further includes an anti-reflection layer disposed on the surface of the solar cell facing away from the substrate. The anti-reflection layer refracts and converges light within itself before directing it towards the solar cell, thereby increasing the range of the incident angle of the light entering the solar cell and increasing the light absorption and light absorption efficiency of the solar cell. The incident angle refers to the angle between a beam of light entering the solar cell and the plane containing the solar cell; the incident angle ranges from 0° to 90°. A larger incident angle results in higher solar cell absorption efficiency.

[0027] In one possible implementation of the first aspect, the antireflection layer includes a high-refractive-index layer and a low-refractive-index layer stacked together. By adjusting the number and stacking relationship of the high-refractive-index layer and the low-refractive-index layer, the incident angle of sunlight entering the solar cell is increased, and the range of angles of sunlight that can enter the solar cell is increased, thereby increasing the amount of sunlight absorbed by the solar cell and its light absorption efficiency.

[0028] In one possible implementation of the first aspect, the antireflective layer includes a high-refractive-index layer and a low-refractive-index layer disposed on the same layer. The low-refractive-index layer overlaps with the projection of the solar cell onto the substrate, and the high-refractive-index layer overlaps with the projection of the light-emitting layer onto the substrate. This allows the low-refractive-index layer to increase the incident angle range of light entering the solar cell, increasing the light absorption and light absorption efficiency of the solar cell. The high-refractive-index layer increases the exit angle of the light-emitting portion, improving the light extraction efficiency of the light-emitting layer. Thus, the performance of the display screen is enhanced.

[0029] In one possible implementation of the first aspect, the solar cell further includes a photoelectric sensor for detecting the intensity of light received by the solar cell. This allows for the simultaneous measurement of corresponding light intensity values ​​using the solar cell, enriching the functionality of the electronic device.

[0030] In one possible implementation of the first aspect, the solar cell also includes a visible light sensor, thereby enabling the measurement of the intensity of visible light in the environment using a display screen.

[0031] In one possible implementation of the first aspect, the solar cell also includes an ultraviolet light sensor. This allows the intensity of ultraviolet radiation in the environment to be measured using a display screen.

[0032] In one possible implementation of the first aspect, the materials for the solar cell include: amorphous silicon, polycrystalline silicon, monocrystalline silicon, gallium arsenide, perovskite, zinc phosphide, copper indium gallium selenide, cadmium telluride, photosensitive organic materials, dye sensitization, etc.

[0033] In one possible implementation of the first aspect, solar cells can be prepared by chemical vapor deposition, physical vapor deposition, coating, redox reaction, etc.

[0034] In one possible implementation of the first aspect, the light transmittance of the solar cell is greater than or equal to 70%. This reduces the impact of the solar cell on the light extraction efficiency of the display layer, thereby enhancing the display effect.

[0035] In a second aspect, an electronic device is provided, comprising: a power supply device, and one or more displays provided in the first aspect, wherein a solar cell is electrically connected to the power supply device.

[0036] Since the electronic device provided in the second aspect of this application includes a display screen of any of the above technical solutions, both can solve the same technical problem and achieve the same technical effect. Attached Figure Description

[0037] Figure 1 Perspective views of electronic devices provided in some embodiments of this application;

[0038] Figure 2 for Figure 1 An exploded view of the electronic device shown;

[0039] Figure 3 A partial cross-sectional structural diagram of the display screen provided in some embodiments of this application;

[0040] Figure 4 A partial cross-sectional structural schematic diagram of the display screen provided for other embodiments of this application;

[0041] Figure 5 A schematic top view of a display screen in the XY plane provided for some embodiments of this application;

[0042] Figure 6 A schematic top view of the display screen in the XY plane for other embodiments of this application;

[0043] Figure 7 A partial cross-sectional structural schematic diagram of the display screen provided for some embodiments of this application;

[0044] Figure 8 A schematic cross-sectional view of the display screen provided in some embodiments of this application;

[0045] Figure 9 A cross-sectional schematic diagram of a transistor provided for some embodiments of this application;

[0046] Figure 10 A partial cross-sectional structural diagram of the display screen provided in some other embodiments of this application;

[0047] Figure 11 A partial cross-sectional structural diagram of a display screen provided for other embodiments of this application;

[0048] Figure 12 A partial cross-sectional structural schematic diagram of the display screen provided in other embodiments of this application;

[0049] Figure 13 A partial cross-sectional structural diagram of the display screen provided in other embodiments of this application;

[0050] Figure 14 A partial cross-sectional structural diagram of the display screen provided in other embodiments of this application;

[0051] Figure 15 A schematic top view of a display screen in the XY plane for some embodiments of this application;

[0052] Figure 16 A partial cross-sectional structural diagram of the display screen provided in other embodiments of this application;

[0053] Figure 17 A schematic top view of the display screen in the XY plane for other embodiments of this application;

[0054] Figure 18 A partial cross-sectional structural diagram of the display screen provided in other embodiments of this application;

[0055] Figure 19 A partial cross-sectional structural diagram of the display screen provided in other embodiments of this application;

[0056] Figure 20 A partial cross-sectional structural diagram of the display screen provided in other embodiments of this application;

[0057] Figure 21 A partial cross-sectional structural diagram of the display screen provided in other embodiments of this application;

[0058] Figure 22 A partial cross-sectional structural diagram of the display screen provided in other embodiments of this application;

[0059] Figure 23 A partial cross-sectional structural diagram of the display screen provided in other embodiments of this application;

[0060] Figure 24 A partial cross-sectional structural diagram of the display screen provided in other embodiments of this application;

[0061] Figure 25 A partial cross-sectional structural diagram of the display screen provided in other embodiments of this application;

[0062] Figure 26 This is a partial cross-sectional structural diagram of a display screen provided for other embodiments of this application.

[0063] Reference numerals: Electronic device 1; Display screen 10; Light-transmitting cover 11; Display panel 12; Housing assembly 20; Middle frame 21; Bezel 211; Middle plate 212; Mounting slot 212a; Rear cover 22; Main circuit board 30; Sub-circuit board 40; Battery 50; Connection structure 60; Display area 10a; Non-display area 10b;

[0064] Solar cell 100; first part 100a; first opening a1; second opening a2; second part 100b; photoelectric sensor 100c; substrate 200a; display layer 200b; light-emitting layer 201; light-emitting sub-pixel 201a; active layer AL; channel 202; first planarization layer 203; pixel definition layer 204; opening 204a; touch layer 300; filling material 30A; touch trace 30B; second planarization layer 400; encapsulation layer 205; color filter layer 500; color resist 50A; light-shielding part 50B; polarizer POL; cover plate 600; anti-reflection layer 700; high refractive layer 700a; low refractive layer 700b. Detailed Implementation

[0065] In the embodiments of this application, the terms "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0066] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0067] In the description of embodiments of this application, the term "comprising" or any other variations thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0068] This application provides an electronic device, including mobile phones, tablet computers, personal digital assistants (PDAs), cameras, personal computers, laptops, in-vehicle devices, wearable devices, watches, augmented reality (AR) glasses, AR headsets, virtual reality (VR) glasses, or VR headsets, and other electronic devices with a display interface. This application does not describe the specific form of the aforementioned electronic device.

[0069] For ease of explanation, the following description uses a mobile phone as an example for electronic device 1. Please refer to... Figure 1 and Figure 2 , Figure 1 A perspective view of an electronic device 1 provided in some embodiments of this application; Figure 2 for Figure 1 The diagram shows an exploded view of electronic device 1. Electronic device 1 includes a display screen 10, a housing assembly 20, a main circuit board 30, a secondary circuit board 40, a battery 50, and a connection structure 60.

[0070] It should be noted that, Figure 1 and Figure 2 The accompanying drawings below only schematically illustrate some components of the electronic device 1; the actual shape, size, location, and construction of these components are not subject to change. Figure 1 and Figure 2 And the limitations of the figures below.

[0071] For the convenience of the description of the embodiments below, an XYZ coordinate system is established for electronic device 1. Specifically, the thickness direction of electronic device 1 is defined as the Z-axis direction, and the directions perpendicular to the Z-axis direction are the X-axis direction and the Y-axis direction, respectively, with the X-axis direction and the Y-axis direction being perpendicular. It is understood that the coordinate system settings of electronic device 1 can be flexibly set according to actual needs, and no specific limitation is made here.

[0072] The display screen 10 is used to display images, videos, etc. The display screen 10 includes a light-transmitting cover 11 and a display panel 12. The light-transmitting cover 11 is flat. Specifically, the shape of the light-transmitting cover 11 includes, but is not limited to, a rectangular flat panel, an oblong flat panel, a circular flat panel, or an elliptical flat panel. The light-transmitting cover 11 is stacked and fixedly connected to the display panel 12. In some examples, the light-transmitting cover 11 is used to protect the display panel 12 and prevent dust. The material of the light-transmitting cover 11 includes, but is not limited to, glass, plastic, or ceramic. For example, the light-transmitting cover 11 can be a common light-transmitting cover 11, used to protect the display panel 12 from damage caused by external impact and to prevent dust. A light-transmitting cover 11 with touch functionality can also be used to enable the electronic device 1 to have touch functionality, making it more convenient for the user. Therefore, this application does not specifically limit the material of the light-transmitting cover 11.

[0073] The display panel 12 can be a flexible display or a rigid display. For example, the display panel 12 can be an organic light-emitting diode (OLED) display, an active-matrix organic light-emitting diode (AMOLED) display, a mini organic light-emitting diode (MLED) display, a micro organic light-emitting diode (MOLED) display, a microorganic light-emitting diode (MOLED) display, a quantum dot light-emitting diode (QLED) display, or a liquid crystal display (LCD).

[0074] The plane on which the display screen 10 is located is the XY plane, and the thickness direction of the display screen 10 is the Z-axis direction.

[0075] The housing assembly 20 is used to protect the internal circuit components of the electronic device 1. Please continue reading. Figure 2 The housing assembly 20 includes a middle frame 21 and a rear cover 22.

[0076] The back cover 22 and the light-transmitting cover 11 are stacked and spaced apart.

[0077] The middle frame 21 includes a frame 211 and a middle plate 212, with the frame 211 surrounding the middle plate 212. The middle frame 21 can be a one-piece molded structure, meaning the frame 211 and the middle plate 212 are a single integral structure. Alternatively, the middle frame 21 can be formed by assembling the frame 211 and the middle plate 212. The frame 211 surrounds the outer periphery of the back cover 22. The frame 211 can be connected to the back cover 22 via adhesive. The light-transmitting cover 11 is fixed to the step of the frame 211 by adhesive. In this way, the frame 211, the back cover 22, and the light-transmitting cover 11 constitute the housing of the electronic device 1.

[0078] The middle plate 212 is stacked between the light-transmitting cover 11 and the rear cover 22. The middle plate 212 serves as the structural "skeleton" of the electronic device 1, and the main circuit board 30, the secondary circuit board 40, the battery 50, etc., can be fixed on the middle plate 212. Of course, it is understandable that the middle frame 21 may not include the middle plate 212.

[0079] The main circuit board 30 is used to integrate a control chip. The main circuit board 30 is fixed to the surface of the middle board 212 facing the rear cover 22. The control chip can be, for example, an application processor (AP), double data rate synchronous dynamic random access memory (DDR), or universal flash storage (UFS). In some embodiments, the main circuit board 30 is electrically connected to the display screen 10, and the main circuit board 30 is used to control the display screen 10 to display images or videos.

[0080] The secondary circuit board 40 is used to integrate electronic components such as antenna (e.g., 5G antenna) RF front-end, universal serial bus (USB) devices, and oscillators.

[0081] The secondary circuit board 40 is electrically connected to the main circuit board 30 via a connection structure 60 to enable data and signal transmission between the secondary circuit board 40 and the main circuit board 30. The connection structure 60 can be a flexible printed circuit (FPC). In other embodiments, the connection structure 60 can also be a wire or enameled wire.

[0082] The battery 50 may include, but is not limited to, nickel-cadmium batteries, nickel-metal hydride batteries, lithium batteries, or other types of batteries. Furthermore, the number of batteries 50 in this embodiment may be multiple or a single battery; the specific number and arrangement of the batteries 50 in this embodiment can be set according to actual needs.

[0083] The battery 50 is located between the main circuit board 30 and the sub-circuit board 40. The battery 50 provides power to the main circuit board 30, the sub-circuit board 40, and the display screen 10, etc. In some embodiments, the surface of the middle plate 212 facing the rear cover 22 has a mounting groove 212a, in which the battery 50 is installed. During use, the user pre-charges the battery 50 to extend the battery life of the electronic device 1 when it is not plugged in.

[0084] The battery life of electronic device 1 is limited by the battery capacity. With continuous technological advancements, the energy consumption of components such as the display screen 10 and control chips in electronic device 1 is increasing, and users are using electronic device 1 more frequently. To maintain long battery life, users often need to frequently charge electronic device 1 using an external power source, impacting the user experience. For electronic devices that can be used outdoors, such as mobile phones and smartwatches, converting solar energy into electrical energy for storage would improve battery life and even enable solar charging.

[0085] Therefore, this application provides a display screen 10 including a solar cell, which converts solar energy into electrical energy and stores it in a battery 50 to power electronic devices, thereby increasing the battery life of electronic devices.

[0086] The structure of the display screen 10 provided in this application will be described below. Please refer to... Figure 3 , Figure 3 This is a partial cross-sectional structural diagram of a display screen 10 provided in some embodiments of this application. The display screen 10 includes a solar cell 100 and a display panel 200.

[0087] The display panel 200 includes a substrate 200a and a display layer 200b stacked together. The substrate 200a is used to support the display layer 200b.

[0088] Display layer 200b is used to display images, videos, etc. Display layer 200b includes a light-emitting layer 201 and a driving circuit (…). Figure 3 (Not shown), the light-emitting layer 201 includes a plurality of light-emitting sub-pixels 201a, and the light-emitting sub-pixels 201a are electrically connected to the driving circuit.

[0089] This application does not limit the material of the light-emitting layer 201. The plurality of light-emitting sub-pixels 201a may include red light-emitting sub-pixels, green light-emitting sub-pixels, and blue light-emitting sub-pixels to achieve colorization.

[0090] The driving circuit controls the emission of light from the light-emitting sub-pixels 201a, providing them with lighting signals and power input. In use, the driving circuit controls the switching and brightness of multiple light-emitting sub-pixels 201a to achieve different display effects.

[0091] A solar cell 100 is disposed on the side of the substrate 200a facing the display layer 200b. When the display layer 200b includes a light-emitting layer 201, in some embodiments, such as... Figure 3 As shown, the solar cell 100 is disposed on the side of the light-emitting layer 201 facing the substrate 200a. In other embodiments, such as Figure 4 As shown, Figure 4 This is a partial cross-sectional structural diagram of the display screen 10 provided in some other embodiments of this application. The solar cell 100 may also be disposed on the side of the light-emitting layer 201 facing away from the substrate 200a.

[0092] The solar cell 100 is used to convert solar energy into electrical energy. The solar cell 100 includes a first portion 100a, the projection of which onto the light-emitting layer 201 is located within the gaps between the light-emitting sub-pixels 201a. That is, the first portion 100a of the solar cell 100 does not obstruct the light path of the light-emitting sub-pixels 201a, such as... Figure 5 As shown, Figure 5A schematic top view of the display screen 10 provided in some embodiments of this application in the XY plane.

[0093] Display screen 10 is not typically illuminated from the entire surface; please refer to [link / reference]. Figure 6 , Figure 6 A schematic top view of a display screen 10 in the XY plane, provided for other embodiments of this application. The display screen 10 includes a display area 10a and a non-display area 10b extending around the display area 10a. A plurality of light-emitting sub-pixels 201a ( Figure 6 (Not shown) Located within display area 10a, the light-emitting sub-pixel 201a is used to display images. The non-display area 10b does not have a light-emitting sub-pixel 201a.

[0094] The embodiments of this application do not limit the location of the solar cell. In some embodiments, the solar cell 100 is only disposed in the display area 10a. In other embodiments, the solar cell is only disposed in the non-display area 10b. In still other embodiments, the solar cell 100 is disposed in both the display area 10a and the non-display area 10b. This application will be described using the example of at least a portion of the solar cell 100 being located in the non-display area 10b.

[0095] The optional structures of the solar cell 100 are well known to those skilled in the art and will not be described in detail here. For example, the solar cell 100 is a thin-film solar cell layer, which can reduce the thickness of the solar cell 100.

[0096] The solar cell 100 includes a light-absorbing layer. The main function of the light-absorbing layer is to absorb energy from sunlight. The material of the light-absorbing layer can be selected according to the light absorption capacity requirements, the manufacturing process of the display screen 10, etc., and this application does not impose any limitations on this. For example, the materials of the solar cell 100 include amorphous silicon, polycrystalline silicon, monocrystalline silicon, gallium arsenide, perovskite, zinc phosphide, copper indium gallium selenide, cadmium telluride, photosensitive organic materials, dye sensitization, etc. Among these, using low-temperature polycrystalline silicon as the light-absorbing layer material can improve the photoelectric conversion efficiency; zinc phosphide has excellent light absorption performance and can effectively absorb photons in the visible light region.

[0097] Depending on the location of the light-absorbing layer on the solar cell 100, the solar cell 100 can be divided into single-sided light-absorbing solar cells and multi-sided light-absorbing solar cells. A single-sided light-absorbing solar cell refers to a solar cell 100 where only one side can absorb sunlight, meaning the light-absorbing layer is only located on one side of the solar cell 100. A multi-sided light-absorbing solar cell has light-absorbing layers on multiple surfaces of the solar cell 100, allowing the solar cell 100 to absorb light energy from multiple directions.

[0098] The arrangement of the light-absorbing layer can be adjusted according to the relative position of the solar cell 100 in the display screen 10, the housing structure of the electronic device 1, etc., to avoid affecting the light emission effect of the display screen 10. This application does not impose any restrictions on this. For example, when the solar cell 100 is located on the side of the light-emitting layer 201 away from the substrate 200a, the solar cell 100 can absorb light from one side to avoid absorption; when the solar cell 100 is located on the side of the light-emitting layer 201 facing the substrate 200a, the solar cell 100 can absorb light from both sides to improve the light absorption efficiency.

[0099] This application does not limit the method of fabricating the solar cell 100. Exemplary methods of fabricating the solar cell 100 include, but are not limited to, chemical vapor deposition, physical vapor deposition, coating, redox reaction, etc. For example, when the solar cell 100 is a thin-film solar cell, a coating method can be used in conjunction with a photomask to form the solar cell 100 in a specific area of ​​the display screen 10.

[0100] Furthermore, to reduce the impact on the light emission of the display layer 200b, the solar cell 100 has a certain light transmittance. For example, the light transmittance of the solar cell 100 is not less than 70%. This reduces the impact of the solar cell 100 on the light extraction efficiency of the display layer 200b, enhancing the display effect of the display screen 10. Light transmittance represents the ability of light to pass through a medium. A light transmittance of 0 indicates that all light is absorbed by the medium; a light transmittance of 1 indicates that all light passes through the medium.

[0101] The display screen 10 provided in this embodiment can convert solar energy into electrical energy to directly power electronic devices such as the display screen 10 and control chip in the electronic device 1, or store the electrical energy in a battery for powering the electronic device 1, thereby improving the battery life of the electronic device 1. Meanwhile, since the projection of the first portion 100a of the solar cell 100 onto the light-emitting layer 201 is located in the gap between the light-emitting sub-pixels 201a, solar energy can be converted into electrical energy without affecting the normal light emission of the display screen 10, resulting in good performance.

[0102] This application does not limit the electrical connection relationship between the solar cell 100 and the components in the electronic device 1. In some embodiments, the electronic device 1 includes a power supply device and a display screen 10, and the solar cell 100 is electrically connected to the power supply device.

[0103] The power supply device supplies power to the various electronic components in electronic device 1. For example, the power supply device is battery 50. Solar cell 100 is electrically connected to the power supply device, and the electrical energy converted from sunlight by solar cell 100 can be stored in the power supply device 00 to supply power to electronic device 1, thereby improving the battery life of electronic device 1 and realizing solar charging.

[0104] In other embodiments, the power supply is an additional battery in the electronic device 1, used to store the electrical energy converted from solar energy by the solar cell 100.

[0105] It is understood that in other embodiments, the solar cell 100 can also be directly connected to devices within the electronic device 1, such as the solar cell 100 being electrically connected to the display screen 10, control chip, etc., and directly supplying power to the devices, which can also improve the battery life of the electronic device 1.

[0106] In the above embodiment, the projection of the first portion 100a of the solar cell 100 onto the light-emitting layer 201 is located in the gap between the light-emitting sub-pixels 201a, thus not affecting the light emission of the light-emitting layer 201. Since the display screen 10 is mostly unilaterally emitting light, that is, emitting light from the substrate 200a towards the display layer 200b, when the solar cell 100 is located on the side of the light-emitting layer 201 facing the substrate 200a, please refer to... Figure 7 , Figure 7 This is a partial cross-sectional structural diagram of the display screen 10 provided in some embodiments of this application. The solar cell 100 further includes a second part 100b, which is connected to the first part 100a. The projection of the second part 100b onto the light-emitting layer 201 coincides with the light-emitting sub-pixel 201a. That is, when the solar cell 100 is located on the side of the light-emitting layer 201 facing the substrate 200a, the solar cell 100 does not need to avoid the light-emitting sub-pixel 201a, thereby increasing the light absorption area of ​​the solar cell 100.

[0107] In the above embodiments, when the solar cell 100 is located on the side of the light-emitting layer 201 facing away from the substrate 200a, the solar cell 100 includes a first portion 100a, such as... Figure 3 As shown. In other embodiments, when the solar cell 100 is located on the side of the light-emitting layer 201 facing the substrate 200a, the solar cell 100 may include a first portion 100a, such as... Figure 4 As shown; the solar cell 100 may also include both a first part 100a and a second part 100b, such as Figure 7 As shown, this increases the light absorption area of ​​the solar cell 100. The same understanding applies to the embodiments described below, and will not be repeated hereafter.

[0108] Please see Figure 8 , Figure 8 This is a cross-sectional structural diagram of the display screen 10 provided in some embodiments of this application. The display layer 200b also includes a driving circuit.

[0109] The driving circuit is disposed on the side of the light-emitting layer 201 facing the substrate 200a. The driving circuit is used to drive and control the light emission of the light-emitting layer 201, so that multiple light-emitting sub-pixels 201a in the light-emitting layer 201 can be displayed according to preset values ​​to form an image.

[0110] This application does not limit the specific structure of the driving circuit. In some embodiments, the driving circuit includes a plurality of transistors and at least one capacitor. Exemplarily, the transistors in the driving circuit include thin-film transistors (TFTs), which are used to drive a plurality of light-emitting sub-pixels 201a in the light-emitting layer 201. In this case, the display screen 10 is an OLED display screen.

[0111] Please continue reading. Figure 8 and combined Figure 9 , Figure 9 This is a cross-sectional schematic diagram of a transistor provided in some embodiments of this application. The transistor may include a gate (g), an active layer (AL), a first electrode (e.g., a source (s), and a second electrode (e.g., a drain (d)). Alternatively, the first electrode of the transistor may be the drain (d), and the second electrode may be the source (s). This application does not limit this; for ease of illustration, the following description uses the example of the transistor having the first electrode as the source (s) and the second electrode as the drain (d).

[0112] The active layer AL is made of semiconductor material. When the voltage applied to the gate g of the transistor is sufficient to turn on the transistor, the active layer AL changes from an insulator to a conductor, coupling the source s and drain g of the transistor. When the voltage applied to the gate g of the transistor is insufficient to turn on the transistor, the active layer AL is in an insulating state, and the source s and drain d of the transistor are disconnected.

[0113] The performance of the transistor varies depending on the material of the active layer AL constituting it, and this application does not impose any limitations on this. For example, the active layer AL can be made of amorphous silicon (a-Si) or polycrystalline silicon (p-Si), wherein the polycrystalline silicon can be, for example, low-temperature polycrystalline silicon (LTPS). Thin-film transistors using LTPS technology can also be called LTPS TFTs, which have high electron mobility, small thin-film circuit area, simple structure, and high stability.

[0114] In other embodiments, the active layer material AL can also be a semiconductor oxide (e.g., amorphous indium gallium zinc oxide, IGZO). Since semiconductor oxide transistors have lower electron mobility than polycrystalline silicon transistors but have extremely low off-state current, they are generally used in situations with slow switching frequencies (e.g., when electronic device 1 is in standby mode), and can be used to reduce leakage current, thereby reducing power consumption.

[0115] A channel 202 is formed on the active layer AL, which forms a conductive channel in the active layer AL to allow charge carriers to flow between the source electrode s and the drain electrode d. During fabrication, a mask can be used to fabricate the pattern of the active layer AL and the channel 202 on the substrate 200a.

[0116] The solar cell 100 is disposed in the same layer as the active layer AL. Alternatively, the solar cell 100 may be disposed at a distance from the active layer AL. This allows the solar cell 100 and the active layer AL to be fabricated in the same surface layer process, facilitating processing.

[0117] In some embodiments, the same material is used in both the solar cell 100 and the active layer AL. This simplifies the fabrication process. Furthermore, using the same material to fabricate the co-layered active layer AL and solar cell optimizes the interface, reduces charge degradation of the composite material at the interface, and thereby improves the photoelectric conversion efficiency of the solar cell 100.

[0118] For example, when the active layer AL is made of low-temperature polycrystalline silicon, the solar cell 100 is also made of low-temperature polycrystalline silicon. Using low-temperature polycrystalline silicon to fabricate the solar cell 100 can improve the solar cell 100's absorption rate of sunlight.

[0119] When fabricating the solar cell 100, a photomask can be used to fabricate the pattern of the solar cell 100 on the corresponding film layer of the display screen 10. When the solar cell 100 and the active layer AL are on the same layer, the solar cell 100 and the active layer AL can share a single photomask. This reduces processing costs.

[0120] Please see Figure 10 , Figure 10 This is a partial cross-sectional structural diagram of the display screen 10 provided in some other embodiments of this application. The display layer 200b also includes a first planarization layer 203 disposed on the side of the light-emitting layer 201 facing the substrate 200a, and the solar cell 100 is disposed in the first planarization (PLN) 203.

[0121] The first planarization layer 203 provides a planarized surface for the light-emitting layer 201, facilitating light extraction. This application does not limit the material of the first planarization layer 203. For example, the material of the first planarization layer 203 includes organic materials.

[0122] This application does not limit the specific location of the first planarization layer 203 on the side of the light-emitting layer 201 facing the substrate 200a. For example, the first planarization layer 203 is part of a driving circuit.

[0123] Figure 10 The following description uses a solar cell 100 including a first portion 100a as an example. It can be understood that, since the first planarization layer 203 is located on the side of the light-emitting layer 201 facing the substrate 200a, when the solar cell 100 is located within the first planarization layer 203, the solar cell 100 may also simultaneously include the first portion 100a and the second portion 100b.

[0124] This application does not limit the number of layers in the first planarization layer 203. In this embodiment, the first planarization layer 203 is one layer. It is understood that in other embodiments, the first planarization layer 203 may also be two layers, and the solar cell 100 may be disposed in any one or more first planarization layers 203.

[0125] By placing the solar cell 100 within the first planarization layer 203, the solar cell 100 can be aligned and planarized using the first planarization layer 203, without the need to separately set a new film layer for planarization of the solar cell 100, thus simplifying the manufacturing process.

[0126] Please see Figure 11 , Figure 11 This is a partial cross-sectional structural diagram of the display screen 10 provided in other embodiments of this application. The display layer 200b includes a pixel definition layer 204 (PDL), which has an opening 204a. A light-emitting sub-pixel 201a is disposed in the opening 204a. For example, there are multiple openings 204a, and one light-emitting sub-pixel 201a in the light-emitting layer 201 is disposed in one opening.

[0127] The solar cell 100 is disposed within the pixel definition layer 204. That is, the solar cell 100 and the pixel definition layer 204 are disposed in the same layer, and the solar cell 100 is located within the pixel definition layer 204 excluding the opening 204a, thus avoiding shading of the light-emitting sub-pixel 201a. Therefore, the solar cell 100 and the pixel definition layer 204 can be fabricated in the same surface layer process, facilitating processing.

[0128] Please see Figure 12 , Figure 12This is a partial cross-sectional structural diagram of a display screen 10 provided in some other embodiments of this application. The display screen 10 also includes a touch layer 300.

[0129] The touch layer 300 is disposed on the side of the display layer 200b away from the substrate 200a. The touch layer 300 includes a filling material 30A and multiple touch traces 30B. The filling material 30A is disposed on one or both sides of the touch traces 30B to planarize them. The placement of the touch layer 300 enables the display screen 10 to both convert solar energy into electrical energy and achieve touch control, providing rich functionality.

[0130] In some embodiments, please refer to Figure 13 , Figure 13 This is a partial cross-sectional structural diagram of the display screen 10 provided in some other embodiments of this application. When the display screen 10 also includes a touch layer 300, the solar cell 100 and the touch trace 30B are disposed on the same layer. Therefore, the filler material 30A of the touch layer 300 can be used to planarize the solar cell 100, thereby improving the overall structural integrity of the display screen 10.

[0131] In other embodiments, please refer to Figure 14 , Figure 14 This is a partial cross-sectional structural diagram of the display screen 10 provided in some other embodiments of this application. The display screen 10 also includes a second planarization layer 400 disposed between the touch layer 300 and the display layer 200b. The second planarization layer 400 is used to planarize the touch layer 300.

[0132] The solar cell 100 is disposed within the second planarization layer 400. Therefore, the second planarization layer 400 can be used to planarize the solar cell 100, improving the overall structural integrity of the display screen 10.

[0133] It is understood that in some embodiments, the second planarization layer 400 may also be part of the filler material 30A.

[0134] In some cases, during the process of absorbing light energy and converting it into electrical energy, the solar cell 100 may interfere with the electric field around the touch trace 30B, increase the parasitic capacitance of the touch layer 300, and affect the touch effect of the display screen 10.

[0135] Therefore, in some embodiments, please refer to Figure 15 , Figure 15This is a schematic top view of the display screen 10 in the XY plane according to some embodiments of this application. When the display screen 10 includes a touch layer 300, a first opening a1 is provided on the first portion 100a of the solar cell 100, and the projection of the touch trace 30B on the solar cell 100 is located within the first opening a1. Therefore, the touch trace 30B in the touch layer 300 can be avoided, mitigating the impact of the solar cell 100 on the touch layer 300.

[0136] It is understood that in some embodiments, when the filling material 30A in the touch layer 300 is an insulating barrier material, i.e., when the touch layer 300 is an external touch layer, the solar cell 100 may not have a first opening a1. Due to the barrier effect of the filling material 30A, the operation of the solar cell 100 will not affect the touch trace 30B. Therefore, the solar cell 100 may not need to avoid the touch trace 30B to obtain a larger light-absorbing area.

[0137] Similarly, in some embodiments, the display screen 10 further includes an encapsulation layer 205, which is located between the touch layer 300 and the pixel definition layer 204. The encapsulation layer 205 may include, for example, a first inorganic layer, a first organic layer, and a second inorganic layer, which can prevent water and oxygen from entering the interior of the display panel, thus avoiding display panel failure and aging. Simultaneously, the first organic layer can also block the capacitors on both sides of the encapsulation layer.

[0138] Therefore, when the solar cell 100 is located on the side of the encapsulation layer 205 near the substrate 200a, the solar cell 100 may not include the first opening a1. That is, when the solar cell 100 is located on the side of the encapsulation layer 205 near the substrate 200a, the solar cell 100 does not need to avoid the touch wiring 30B, thereby increasing the contact area with sunlight and improving light absorption.

[0139] Please see Figure 16 , Figure 16 This is a partial cross-sectional structural diagram of the display screen 10 provided in some other embodiments of this application. The display screen 10 also includes a color filter layer 500.

[0140] A color filter layer 500 is disposed on the side of the touch layer 300 facing away from the substrate 200a. The color filter layer 500 includes color resist portions 50A and light-shielding portions 50B. The fabrication of the color filter layer 500 generally involves first forming a grid-arranged black matrix (BM), i.e., the light-shielding portions 50B, on a substrate. Each grid corresponds to a light-emitting sub-pixel 201a on the light-emitting layer 201; that is, the projection of the light-emitting sub-pixel 201a onto the color filter layer 500 lies within the area enclosed by the light-shielding portions 50B. Subsequently, color resist portions 50A (Color Filters, CF) of red (R), green (G), and blue (B) colors are sequentially arranged within the grids defined by the light-shielding portions 50B. The different colors of the color resist portions 50A ensure that only light of the same color as that color resist portion 50A can pass through, while other colors of light are reflected or absorbed, thereby forming a color image on the display screen 10. The light-blocking part 50B is used to prevent color mixing between multiple color resist parts 50A and improve display contrast.

[0141] In some embodiments, please refer to Figure 17 , Figure 17 This is a schematic top view of the display screen 10 in the XY plane provided in some other embodiments of this application. When the display screen 10 includes a touch layer 300 and a color filter layer 500, the solar cell 100 is disposed in the color filter layer 500.

[0142] The first part 100a of the solar cell 100 is provided with a second opening a2, which surrounds the light-shielding part 50B. As a result, the solar cell 100 can avoid the light-shielding part 50B, thereby improving the display effect of the display screen 10.

[0143] In other embodiments, please continue to refer to Figure 17 The first part 100a of the solar cell 100 is provided with a first opening a1 and a second opening a2. The projection of the touch trace 30B on the solar cell 100 is located within the first opening a1, and the second opening a2 is arranged around the light-shielding part 50B. Thus, the light-shielding part 50B and the touch trace 30B can be simultaneously avoided, improving the display effect and touch effect of the display screen 10.

[0144] It is understandable that when the display screen 10 does not include the touch layer 300, and when the solar cell 100 is disposed within the color filter layer 500, the first portion 100a of the solar cell 100 is provided with a second opening a2, which surrounds the light-shielding portion 50B. This allows the light-shielding portion 50B to be avoided, improving the display effect of the display screen 10.

[0145] In other embodiments, please refer to Figure 18 , Figure 18This is a partial cross-sectional structural diagram of the display screen 10 provided in some other embodiments of this application. The solar cell 100 is disposed on the side of the color filter layer 500 opposite to the display layer 200b. As a result, the solar cell 100 does not need to avoid the light-shielding part 50B, thus increasing the area of ​​the solar cell 100.

[0146] It is understood that in other embodiments, such as Figure 19 As shown, Figure 19 This is a partial cross-sectional structural diagram of the display screen 10 provided in some other embodiments of this application. The display screen 10 does not include the color filter layer 500, but instead has a polarizer (POL) on the side of the touch layer 300 facing away from the substrate 200a. The polarizer POL controls the polarization direction of light, so that only light vibrating in a specific direction can pass through, which can also improve the contrast of the display screen image and form a color image. When the display screen 10 includes the polarizer POL, the optional arrangement of the solar cell 100 is the same as in other embodiments where the display screen 10 does not include the color filter layer 500, that is, the first part 100a of the solar cell 100 does not need to additionally avoid the light-shielding part 50B, and the light-absorbing area is larger.

[0147] It should be noted that, Figure 19 This example uses a display screen 10 that includes both a touch layer 300 and a polarizer POL. In other embodiments, the display screen 10 may not include a touch layer 300.

[0148] Please see Figure 20 , Figure 20 This is a partial cross-sectional structural diagram of the display screen 10 provided in some other embodiments of this application. In some embodiments, the display screen 10 also includes a cover plate 600.

[0149] The cover plate 600 is disposed on the side of the display layer 200b opposite to the substrate 200a. For example, the cover plate 600 is located on the outermost side of the display 10 away from the substrate 200a, thereby providing protection for the internal components of the display 10.

[0150] This application does not limit the material of the cover plate 600. For example, the cover plate 600 is a transparent glass cover plate.

[0151] In some embodiments, please continue reading Figure 20 The solar cell 100 is disposed on the surface of the cover plate 600 opposite to the substrate 200a. At this time, other areas in the same layer as the solar cell 100 are filled with filler material for planarization of the solar cell 100. The solar cell 100 is located on the outermost side of the display screen 10 away from the substrate 200a, and the solar cell 100 is in direct contact with sunlight, resulting in high light absorption efficiency.

[0152] In some embodiments, when the display screen 10 includes a touch layer 300 and a color filter layer 500, such as Figure 20 As shown, the solar cell 100 is disposed on the surface of the cover plate 600 away from the substrate 200a. In this case, compared to when the solar cell 100 is on the same layer as the color filter layer 500, the solar cell 100 does not need to avoid the light-shielding part 50B. At the same time, the solar cell 100 is located on the outermost side of the display screen 10 away from the substrate 200a, and the solar cell 100 is in direct contact with sunlight, resulting in high light absorption efficiency.

[0153] It is understood that in other embodiments, the solar cell 100 may also be disposed on the same layer as the cover plate 600.

[0154] The above describes the arrangement of the solar cell 100 within the display screen 10 when the solar cell 100 is a single layer.

[0155] This application does not limit the number of layers of the solar cell 100. That is, the solar cell 100 in the display screen 10 can be one layer or multiple layers. When the solar cell 100 is multi-layered, it can be configured as described in the foregoing embodiments to achieve the corresponding technical effects. For example, please refer to... Figure 21 , Figure 21 This is a partial cross-sectional structural diagram of the display screen 10 provided in some other embodiments of this application.

[0156] like Figure 21 As shown, the display screen 10 includes a solar cell 100, a display panel 200, a touch layer 300, a second planarization layer 400, a color filter layer 500, and a cover plate 600.

[0157] The display panel 200 includes a substrate 200a and a display layer 200b stacked together. The substrate 200a is used to support the display layer 200b.

[0158] Display layer 200b is used to display images, videos, etc. Display layer 200b includes, in sequence from substrate 200a to the side opposite to substrate 200a, a driving circuit, a light-emitting layer 201, a first planarization layer 203, a pixel definition layer 204, and an encapsulation layer 205.

[0159] The light-emitting layer 201 includes a plurality of light-emitting sub-pixels 201a. The driving circuit includes a plurality of transistors, exemplarily thin-film transistors (TFTs), which drive the light-emitting sub-pixels 201a. The transistors include an active layer AL. The first planarization layer 203 has two layers. The pixel definition layer 204 includes an opening 204a, in which the light-emitting sub-pixels 201a are disposed.

[0160] The structures of the touch layer 300, the second planarization layer 400, the color filter layer 500, and the cover plate 600 are the same as those described in the previous embodiments. Specifically, the touch layer 300 is disposed on the side of the display layer 200b away from the substrate 200a, the second planarization layer 400 is disposed between the touch layer 300 and the display layer 200b, the color filter layer 500 is disposed on the side of the touch layer 300 opposite to the substrate 200a, and the cover plate 600 is disposed on the side of the color filter layer 500 opposite to the substrate 200a.

[0161] exist Figure 21 In the display screen 10 provided in the illustrated embodiment, the solar cell 100 can be configured in the following ways:

[0162] The solar cell 100 and the active layer AL are arranged in the same layer. At this time, the solar cell 100 and the active layer AL can be made of the same material and using the same set of photomasks.

[0163] The solar cell 100 is disposed within the first planarization layer 203. At this time, the first planarization layer 203 can be used to align and planarize the solar cell 100.

[0164] The solar cell 100 is disposed within the pixel definition layer 204. Specifically, the solar cell 100 is disposed in the area of ​​the pixel definition layer 204 excluding the opening 204a. Thus, the solar cell 100 and the pixel definition layer 204 can be manufactured in the same surface layer process, which is convenient for processing.

[0165] The solar cell 100 is disposed within the second planarization layer 400. The solar cell 100 includes a first portion 100a, the projection of which onto the light-emitting layer 201 is located within the gaps between the light-emitting sub-pixels 201a. Thus, without affecting the light emission from the light-emitting layer 201, the second planarization layer 400 can be used to planarize the solar cell 100, improving the overall structural integrity of the display screen 10.

[0166] A solar cell 100 is disposed within the touch layer 300. At this time, the solar cell 100 includes a first portion 100a, a first opening a1, and a touch trace 30B. Figure 21 The projection of the solar cell 100 (not shown) onto the solar cell 100 is located within the first opening a1. Thus, without affecting the light emission of the light-emitting layer 201, the touch traces 30B in the touch layer 300 can be avoided, mitigating the impact on the touch layer 300 caused by the addition of the solar cell 100.

[0167] The solar cell 100 is located within the color filter layer. At this time, the first portion 100a of the solar cell 100 has a first opening a1 and a second opening a2. The projection of the touch trace 30B onto the solar cell 100 is located within the first opening a1, and the second opening a2 surrounds the light-shielding portion 50B. Thus, the light-shielding portion 50B and the touch trace 30B can be simultaneously avoided.

[0168] The solar cell 100 is disposed within the cover plate 600. At this time, the projection of the first part 100a of the solar cell 100 onto the light-emitting layer 201 is located within the gap of the light-emitting sub-pixels 201a, and the solar cell 100 includes a first opening a1, and the projection of the touch trace 30B onto the solar cell 100 is located within the first opening a1.

[0169] The solar cell 100 is disposed on the side of the cover plate 600 facing away from the substrate 200a. At this time, the projection of the first portion 100a of the solar cell 100 onto the light-emitting layer 201 is located within the gap of the light-emitting sub-pixels 201a, and the solar cell 100 includes a first opening a1, with the projection of the touch trace 30B onto the solar cell 100 located within the first opening a1. Therefore, the solar cell 100 is in direct contact with sunlight, increasing the light absorption efficiency of the solar cell 100 without affecting the light emission of the light-emitting layer 201 or obstructing the touch trace 30B.

[0170] In this embodiment, as Figure 21 As shown, the solar cell 100 has three layers, which are respectively disposed within the active layer AL, the first planarization layer 203, and the touch layer 300. Thus, the multilayer solar cell 100 works together, increasing the light-absorbing area of ​​the solar cell 100.

[0171] The other structures of the display screen 10 are described below.

[0172] During the use of electronic device 1, sunlight is diffused light, and some of the light does not directly hit the solar cell 100. Therefore, this application provides a display screen 10, please refer to [link to relevant documentation]. Figure 22 , Figure 22 This is a partial cross-sectional structural diagram of the display screen 10 provided in some other embodiments of this application. The display screen 10 also includes an anti-reflection layer 700, which is disposed on the surface of the solar cell 100 away from the substrate 200a.

[0173] This application does not limit the location of the antireflection layer 700, as long as the antireflection layer 700 is located on the side of the solar cell 100 facing away from the substrate 200a. In some embodiments, please refer to... Figure 23 , Figure 23This is a partial cross-sectional structural diagram of the display screen 10 provided in some embodiments of this application. When the display screen 10 includes a driving circuit with transistors, the antireflection layer 700 is a whole surface and directly covers the surface of the active layer AL of the transistors. Therefore, the antireflection layer 700 can be fabricated using the same mask as the active layer AL. When the solar cell 100 and the active layer AL are disposed in the same layer, the active layer AL, the solar cell 100, and the antireflection layer 700 can be fabricated in the same surface layer process, which is convenient for processing.

[0174] It is understood that, in other embodiments, the antireflection layer 700 may also be formed only locally on the side of the solar cell 100 away from the substrate 200a, using a photomask.

[0175] This application does not limit the material of the antireflection layer 700, as long as the refractive index of the antireflection layer 700 is less than the refractive index of other films on the side of the solar cell 100 facing away from the substrate 200a. The antireflection layer 700 can refract and converge light within it before it is directed towards the solar cell 100, thereby increasing the incident angle range of light entering the solar cell 100 and increasing the light absorption and light absorption efficiency of the solar cell 100.

[0176] It should be noted that the incident angle refers to the angle between a beam of light incident on the solar cell 100 and the plane on which the solar cell 100 is located. The incident angle ranges from 0° to 90°. The larger the incident angle, the higher the absorption efficiency of the solar cell 100 for sunlight.

[0177] In some embodiments, please refer to Figure 24 , Figure 24 This is a partial cross-sectional structural diagram of the display screen 10 provided in some other embodiments of this application. The antireflection layer 700 includes a high-refractive-index layer 700a and a low-refractive-index layer 700b stacked together. By adjusting the number of layers and the stacking relationship of the high-refractive-index layer 700a and the low-refractive-index layer 700b, the incident angle of sunlight entering the solar cell 100 is increased, and the range of angles of sunlight that can enter the solar cell 100 is increased, thereby increasing the amount of sunlight absorbed by the solar cell 100 and its light absorption efficiency.

[0178] It is understood that the antireflection layer 700 can also be an existing film layer in the display screen 10 provided in any one or more of the aforementioned embodiments. That is, by adjusting the refractive index of each film layer in the display screen 10, the incident angle range of light entering the solar cell 100 can be increased without adding a new film layer, thereby increasing the light absorption efficiency.

[0179] In some other embodiments, please refer to Figure 25 , Figure 25This is a partial cross-sectional structural diagram of the display screen 10 provided in some other embodiments of this application. The antireflection layer 700 includes a high-refractive-index layer 700a and a low-refractive-index layer 700b disposed on the same layer. The low-refractive-index layer 700b overlaps with the projection of the solar cell 100 onto the substrate 200a, and the high-refractive-index layer 700a overlaps with the projection of the light-emitting layer 201 onto the substrate 200a. In this way, the low-refractive-index layer 700b can increase the incident angle range of light entering the solar cell, increasing the light absorption and light absorption efficiency of the solar cell. Simultaneously, during light emission, the high-refractive-index layer 700a can increase the emission angle of the light-emitting sub-pixels 201a in the light-emitting layer 201, reducing cathode reflection, and preventing light from entering the low-refractive-index layer 700b from the high-refractive-index layer 700a, thus improving the light emission efficiency of the light-emitting layer 201. Therefore, the operating performance of the display screen 10 is enhanced.

[0180] The refractive indices of the high-refractive-index layer 700a and the low-refractive-index layer 700b can be designed based on the thickness of each film layer on the side of the solar cell 100 facing away from the substrate 200a, the width of the solar cell 100, etc. In some embodiments, when the high-refractive-index layer 700a and the low-refractive-index layer 700b are disposed in the same layer, the refractive index of the high-refractive-index layer 700a ranges from 1.7 to 2.5, and the refractive index of the low-refractive-index layer 700b ranges from 1.2 to 1.7. For example, the refractive index of the high-refractive-index layer 700a is 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, or 2.5. The refractive index of the low-refractive-index layer 700b is 1.2, 1.3, 1.4, 1.5, 1.6, or 1.7.

[0181] Please see Figure 26 , Figure 26 This is a partial cross-sectional structural diagram of the display screen 10 provided in some other embodiments of this application. The solar cell 100 also includes a photoelectric sensor 100c, which is used to detect the intensity of light received by the solar cell 100. Therefore, the solar cell 100 can be used simultaneously to measure the corresponding light intensity value, enriching the functionality of the electronic device 1.

[0182] The structure of the photoelectric sensor 100c is well known to those skilled in the art and will not be described in detail here. The photoelectric sensor 100c is based on the photoelectric effect, which converts light signals into electrical signals and outputs them to obtain the value of light intensity in visible light.

[0183] This application does not limit the photosensitive properties of the photoelectric sensor 100c. In some embodiments, the photoelectric sensor 100c is an ultraviolet light sensor. Thus, the intensity of ultraviolet light in the environment can be measured using the display screen 10. In other embodiments, the photoelectric sensor 100c is a visible light sensor, thereby allowing the intensity of visible light in the environment to be measured using the display screen 10. In still other embodiments, the photoelectric sensor 100c may also be an infrared light sensor for detecting the intensity of infrared light.

[0184] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0185] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A display screen, characterized in that, include: Solar cells and display panels; The display panel includes: a substrate and a display layer stacked together, wherein the solar cell is disposed on the side of the substrate facing the display layer, and the solar cell is used to convert solar energy into electrical energy; The display layer includes a light-emitting layer, the light-emitting layer including a plurality of light-emitting sub-pixels, and the solar cell includes a first portion, the projection of the first portion onto the light-emitting layer being located in the gap between the light-emitting sub-pixels.

2. The display screen according to claim 1, characterized in that, The display layer further includes a driving circuit, which is disposed on the side of the light-emitting layer facing the substrate. The driving circuit includes a thin-film transistor (TFT), which includes an active layer. The solar cell is disposed on the same layer as the active layer.

3. The display screen according to claim 2, characterized in that, The solar cell and the active layer are made of the same material.

4. The display screen according to claim 1, characterized in that, The display layer includes: a first planar layer disposed on the substrate side of the light-emitting layer, and the solar cell disposed within the first planar layer.

5. The display screen according to claim 1, characterized in that, The display layer includes: a pixel definition layer, an opening on the pixel definition layer, a light-emitting sub-pixel placed in the opening, and a solar cell disposed within the pixel definition layer.

6. The display screen according to any one of claims 2-5, characterized in that, The solar cell further includes a second portion connected to the first portion, the second portion being located on the side of the light-emitting layer facing the substrate, and the projection of the second portion on the light-emitting layer coinciding with the light-emitting sub-pixel.

7. The display screen according to claim 1, characterized in that, The display screen further includes a touch layer; the touch layer is disposed on the side of the display layer away from the substrate, and the touch layer includes touch traces.

8. The display screen according to claim 7, characterized in that, The solar cell and the touch control wiring are arranged on the same layer.

9. The display screen according to claim 7, characterized in that, The display screen further includes a second planarization layer disposed between the touch layer and the display layer, wherein the solar cell is disposed within the second planarization layer.

10. The display screen according to claim 7 or 8, characterized in that, The first part has a first opening, and the projection of the touch wiring on the solar cell is located within the first opening.

11. The display screen according to claim 7, characterized in that, The display screen further includes a color filter layer disposed on the side of the touch layer away from the substrate. The color filter layer includes a light-shielding portion, and the projection of the light-emitting sub-pixels on the color filter layer is located within the area enclosed by the light-shielding portion.

12. The display screen according to claim 11, characterized in that, The solar cell is disposed within the color filter layer, and the first portion has a second opening, which surrounds the light-shielding portion.

13. The display screen according to claim 11, characterized in that, The solar cell is disposed on the side of the color filter layer opposite to the display layer.

14. The display screen according to claim 1, characterized in that, The display screen further includes a cover plate disposed on the side of the display layer opposite to the substrate, and the solar cell disposed on the surface of the cover plate opposite to the substrate.

15. The display screen according to any one of claims 1-14, characterized in that, The display screen further includes an anti-reflective layer disposed on the surface of the solar cell facing away from the substrate.

16. The display screen according to claim 15, characterized in that, The antireflective layer comprises a high-refractive-index layer and a low-refractive-index layer stacked together.

17. The display screen according to any one of claims 1-16, characterized in that, The solar cell also includes a photoelectric sensor for detecting the intensity of light received by the solar cell.

18. The display screen according to any one of claims 1-17, characterized in that, The materials used in the solar cells include: amorphous silicon, polycrystalline silicon, monocrystalline silicon, gallium arsenide, perovskite, zinc phosphide, copper indium gallium selenide, cadmium telluride, photosensitive organic materials, dye sensitization, etc.

19. The display screen according to any one of claims 1-18, characterized in that, The solar cells can be prepared by chemical vapor deposition, physical vapor deposition, coating, redox reactions, and other methods.

20. The display screen according to any one of claims 1-19, characterized in that, The light transmittance of the solar cell is greater than or equal to 70%.

21. An electronic device, characterized in that, The electronic device includes: a power supply device, and a display screen according to any one of claims 1-20, wherein the solar cell is electrically connected to the power supply device.

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