A display

Abstract

The present application relates to a kind of display, display is provided with solar cell, display includes first substrate and second substrate, solar cell includes substrate and functional structure layer, the substrate of solar cell is the first substrate and / or second substrate of display;The functional structure layer of solar cell is arranged on the inner surface of first substrate and / or second substrate, or arranged on the outer surface of first substrate and / or second substrate;Functional structure layer includes the anode, PV photovoltaic layer and cathode arranged in stack;Functional structure layer further includes anode auxiliary metal electrode, and insulating layer arranged between cathode and anode auxiliary metal electrode;Wherein, the functional structure layer of solar cell arranged in display VA area is arranged with grid structure or with whole surface type.This solar cell display prepared by the present application has obviously reduced thickness compared with prior art product, and the product appearance is beautiful and practical.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of product design and manufacturing of solar cell devices and displays, and particularly relates to a display. BACKGROUND

[0002] At present, with the rapid development of electronic technology, people's dependence on various portable electronic products is increasing. However, the biggest problem that currently plagues consumers is not the performance and appearance of the product, but the endurance of the product and the power supply emergency plan in the event of an emergency or emergency. Although product development engineers are still trying their best to think of ways to improve the power (original battery) capacity, they still cannot solve the emergency situation. At present, the only way to solve this problem is to additionally configure a solar cell for various electronic devices. However, when the solar cell is externally mounted, the solar cell is usually attached to the upper surface of the display device, which increases the thickness of the product. Although the total thickness of the product can be reduced by separately performing chemical etching and thinning on the display and the solar cell, the structural problem cannot be further improved in essence. In view of this, it is urgent to develop a display device provided with a solar cell to solve this problem. SUMMARY

[0003] The present application aims to solve the problems in the prior art and provides a display provided with a solar cell, a substrate of the solar cell and a substrate of the display are shared, and a functional structure layer of the solar cell is arranged on the inner surface or the outer surface of the two substrates of the display to supply power to the display.

[0004] Specifically, the technical scheme of the present application is as follows: a display is provided with a solar cell, the display comprises a first substrate and a second substrate, the solar cell comprises a substrate and a functional structure layer, the substrate of the solar cell is the first substrate and / or the second substrate of the display; the functional structure layer of the solar cell is arranged on the inner surface of the first substrate and / or the second substrate, or on the outer surface of the first substrate and / or the second substrate; the functional structure layer comprises an anode, a PV photovoltaic layer and a cathode arranged in a stack; the functional structure layer further comprises an anode auxiliary metal electrode and an insulating layer arranged between the cathode and the anode auxiliary metal electrode; wherein the functional structure layer of the solar cell arranged in the VA area of the display is arranged in a grid structure or in a full-area type; when arranged in a grid type, the grid structure overlaps with the interval of the sub-pixel in the VA area of the display; when arranged in a full-area type, at least the light with the same color as the sub-pixel can pass through the functional structure layer of the solar cell; when the functional structure layer of the solar cell is arranged on the inner surface of the first substrate and the second substrate, wherein the structure of the functional structure layer of the solar cell in the VA area is a dot-shaped structure without photovoltaic function, the horizontal cross-sectional shape of the dot-shaped structure is circular or rectangular; the outer shape size of the circular or rectangular is less than or equal to 30 μm, the height is 0.5-20 μm, and the dot-shaped structure can be used as a cell thickness support of the display, so that the display effect of the display is uniform.

[0005] Among them, the solar cell can be divided into two categories: the first category is the solar cell (such as OPV, perovskite, DSC or quantum dot type device) which needs to use back cover or TFE to encapsulate photovoltaic material. The second category is the solar cell (such as crystalline silicon, amorphous silicon, gallium arsenide, CIGS, CdTe (cadmium telluride) type photovoltaic device) which does not need to be encapsulated by back cover or TFE.

[0006] As a preferred technical scheme, the functional structure layer of the solar cell is arranged on the non-VA area and / or the VA area of the inner surface of the first substrate.

[0007] As a preferred technical scheme, the functional structure layer of the solar cell is arranged on the VA area of the inner surface of the first substrate and the non-VA area of the inner surface of the second substrate.

[0008] As a preferred technical scheme, the functional structure layer of the solar cell is arranged on the non-VA area of the inner surface and / or the outer surface of the first substrate and the second substrate, and the VA area of the inner surface and / or the outer surface of the first substrate and the second substrate.

[0009] As a preferred technical scheme, the functional structure layer of the solar cell is arranged in a grid structure on the VA area of the inner surface and / or the outer surface of the first substrate and the second substrate, and the grid structure corresponds to the pattern shape for separating the display pixel interval in the row and column directions of the display, respectively.

[0010] As a preferred technical scheme, the functional structure layer of the solar cell is arranged on the inner surface and / or outer surface of the second substrate, and the second substrate is the substrate of the display far from the user; wherein at least the cathode is made of transparent or semi-transparent material.

[0011] As a preferred technical scheme, when the functional structure layer of the solar cell is arranged on the inner surface of the first substrate and / or the second substrate, the electrode of the solar cell is connected with the lead-out electrode arranged at one end of the display through the conductive particles or conductive glue arranged between the electrode of the solar cell and the electrode of the display; or the electrode of the display is connected with the lead-out electrode arranged at one end of the solar cell through the conductive particles or conductive glue arranged between the electrode of the solar cell and the electrode of the display.

[0012] As a preferred technical scheme, when the functional structure layer of the solar cell is arranged on the outer surface of the first substrate and / or the second substrate, the electrode of the solar cell is connected with the lead-out electrode arranged at one end of the display through the metal wire binding.

[0013] As a preferred technical scheme, when the functional structure layer of the solar cell is arranged on the outer surface of the first substrate and / or the second substrate, the electrode of the solar cell and the electrode of the display are connected through the Y-shaped FPC binding, and the terminals of the two branches of the Y-shaped FPC are respectively connected with the electrode of the solar cell and the electrode of the display.

[0014] As a preferred technical scheme, the sealing glue for bonding the first substrate and the second substrate together is further included, the sealing glue is light-cured resin or heat-cured resin, and the water vapor barrier (WVTR) value of the sealing glue is 2-6 g / m 2 / day.

[0015] The display provided with the solar cell prepared by the present application has the following technical effects compared with the prior art product: the thickness of the display provided with the solar cell prepared by the present application is obviously reduced compared with the prior art product, the material cost of the product can be reduced after the common substrate is used, meanwhile, the production steps of the integrated device can be reduced through structure optimization, and the manufacturing cost is further reduced. In addition, when different types of solar cell devices are matched, different systems of photovoltaic materials can be used to adjust the appearance color of the product, so that the appearance of the product is more beautiful. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The functional structure layer structure diagram of the solar cell is provided in the embodiment of the present application;

[0017] Figure 2 The grid structure diagram of the functional structure layer of the solar cell arranged in the VA area of the display is provided in the embodiment of the present application;

[0018] Figure 3Structure diagram of functional structure layer of solar cell according to the embodiment of the present application arranged on inner surface of first substrate and / or second substrate Figure 1 ;

[0019] Figure 4 Structure diagram of functional structure layer of solar cell according to the embodiment of the present application arranged on inner surface of first substrate and / or second substrate Figure 2 ;

[0020] Figure 5 Structure diagram of functional structure layer of solar cell according to the embodiment of the present application arranged on inner surface of first substrate and / or second substrate Figure 3 ;

[0021] Figure 6 Structure diagram of functional structure layer of solar cell according to the embodiment of the present application arranged on outer surface of first substrate and / or second substrate Figure 1 ;

[0022] Figure 7 Structure diagram of functional structure layer of solar cell according to the embodiment of the present application arranged on outer surface of first substrate and / or second substrate Figure 2 ;

[0023] Figure 8 Structure diagram of spacer distribution in common LCD display

[0024] Figure 9 Structure diagram of solar cell in VA area of display according to the embodiment of the present application made into non-functional point structure Figure 1 ;

[0025] Figure 10 Structure diagram of solar cell in VA area of display according to the embodiment of the present application made into non-functional point structure Figure 2 ;

[0026] Figure 11 Structure diagram of solar cell in VA area of display according to the embodiment of the present application made into non-functional point structure Figure 3 ;

[0027] Explanation of reference numerals:

[0028] Display 1; first substrate 11; second substrate 12; VA area 13; non-VA area 14; display electrode 15; functional layer 16; side binding electrode 17; spacer 18

[0029] Solar cell 2; functional structure layer 21; anode 211; PV photovoltaic layer 212; cathode 213; cathode protection layer 214; desiccant 215; anode auxiliary metal electrode 216; grid structure 22; insulation layer 23;

[0030] Conductive particles 3; metal wire 4; FPC 5; sealing glue 6. DETAILED DESCRIPTION

[0031] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described below in connection with specific embodiments of the present application and corresponding drawings. In the description of the present application, it should be noted that the term "or" is generally used in the sense of including "and / or" unless the context clearly indicates otherwise.

[0032] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0034] Example

[0035] The present embodiment proposes a display 1 provided with a solar cell 2, the display 1 comprising a first substrate 11 and a second substrate 12, the solar cell 2 comprising a substrate and a functional structure layer 21, wherein the substrate of the solar cell 2 is shared with the substrate of the display 1, which can be the first substrate 11 and / or the second substrate 12 of the display 1. Further, the functional structure layer 21 of the solar cell 2 is arranged on the inner surface of the first substrate 11 and / or the second substrate 12, or arranged on the outer surface of the first substrate 11 and / or the second substrate 12.

[0036] As Figure 1As shown, the functional structure layer 21 includes an anode 211, a PV photovoltaic layer 212, and a cathode 213 arranged in a stack. Further, the solar cell 2 also includes an anode auxiliary metal electrode 216 and an insulating layer 23 arranged between the cathode 213 and the anode auxiliary metal electrode 216.

[0037] As shown, the functional structure layer 21 of the solar cell 2 arranged in the VA region 13 of the display 1 is arranged in a grid structure 22 or in a full-area pattern. When arranged in a grid pattern, the grid structure 22 overlaps the intervals of the sub-pixels in the VA region 13 of the display 1; when arranged in a full-area pattern, at least light of the same color as the sub-pixels is allowed to pass through the functional structure layer 21 of the solar cell 2. Figure 2

[0038] Further, the solar cell 2 also has a VA region 13 and a non-VA region 14, the VA region 13 corresponds to the VA region 13 of the display 1, and the non-VA region 14 of the solar cell 2 is arranged outside the VA region 13, and the non-VA region 14 also includes the positive (anode 211) and negative (cathode 213) lead electrodes of the solar cell 2.

[0039] Preferably, the sealing glue 6 for bonding the first substrate 11 and the second substrate 12 together is a light-cured resin or a heat-cured resin, and has a water vapor barrier WVTR value of 2-6 g / m 2 / day.

[0040] Among them, the solar cell 2 that can only be arranged on the inner surface of the first substrate 11 and / or the second substrate 12 is the first type of cell, i.e. OPV (organic solar cell 2), perovskite solar cell 2, DSC (dye-sensitized solar cell 2) and quantum dot photovoltaic device, which requires encapsulation of the photovoltaic layer inside the device. The solar cell 2 arranged on the outer surface of the first substrate 11 and / or the second substrate 12 is the second type of cell, i.e. crystalline silicon, amorphous silicon, gallium arsenide, CIGS, CdTe (cadmium telluride) and other photovoltaic devices, which do not require encapsulation of the photovoltaic layer. As shown, Figure 2 The second type of solar cell 2 can also be arranged on the inner surface of the first substrate 11 and / or the second substrate 12, which reduces the production process of the combined device and allows the display electrode 15 to share the positive electrode (anode 211) of the solar cell 2.

[0041] As shown, Figure 8 Generally, there are two types of spacers 18 in the display 1: one is to use a spherical high-molecular insulating material with uniform particle size, which is sprayed on the surface of the substrate by equipment. The other is to use an organic photoresist material, which is directly made on the fixed position of the non-display area of the substrate pixel through yellow light process. Figure 7 ​The left ball spacer 18 is prepared by spraying, and the right inverse trapezoidal spacer 18 is prepared by yellow light process. Preferably, when the functional structure layer 21 of the solar cell 2 is arranged on the inner surface of the first substrate 11 and the second substrate 12, the functional structure layer 21 of the solar cell 2 in the VA area 13 of the display 1 can be made into a non-functional point structure. Those skilled in the art should understand that non-functional here means that it does not have electrical function in the display, and the point structure solar cell 2 arranged in the VA area 13 does not have photovoltaic function. This structure can replace the spacer 18 in the VA area 13 of the display 1, and the spacer 18 supports the cell thickness of the display 1 to make the display 1 display uniformly. Since the functional structure layer 21 of the point structure solar cell 2 in the VA area 13 is integrally made with the functional structure layer 21 of the solar cell 2 in the non-VA area 14, the point structure solar cell 2 in the VA area 13 replaces the conventional spacer 18 in the display, reduces the process, and supports the cell thickness of the display 1 to make the display 1 display uniformly.

[0042] As Figures 9-11 , the horizontal cross-sectional shape of the point structure is not limited to a circular, oval, rectangular shape, and the like. The outer size of the circular, oval, rectangular shape and the like is set to be within 30 μm, and the height is within the range of 0.5-20 μm. Those skilled in the art should be able to think that the outer size referred to here refers to the size of the length or width or diameter. The point structure as the cell thickness support of the display 1 makes the display 1 display more uniformly. Among them, the point structure as the cell support in the display 1 includes but is not limited to the anode 211+PV photovoltaic layer 212, the anode 211+PV photovoltaic layer 212+cathode 213, the anode 211+PV photovoltaic layer 212+cathode 213+auxiliary electrode, the anode 211+PV photovoltaic layer 212+cathode 213+auxiliary electrode+insulating layer 23 of the solar cell 2, or consists of one or more structures of the above stacking structure.

[0043] Preferably, the functional structure layer 21 of the solar cell 2 can be arranged on the inner surface of the non-VA area 14 and / or the VA area 13 of the first substrate 11.

[0044] Preferably, the functional structure layer 21 of the solar cell 2 can be arranged on the inner surface of the VA area 13 of the first substrate 11 and partially arranged on the inner surface of the non-VA area 14 of the second substrate 12.

[0045] Preferably, the functional structure layer 21 of the solar cell 2 is arranged on the non-VA area 14 of the inner and / or outer surface of the first substrate 11 and the second substrate 12 and / or the VA area 13 of the inner and / or outer surface of the first substrate 11 and the second substrate 12. Further preferably, the functional structure layer 21 of the solar cell 2 is arranged on the VA area 13 of the inner and / or outer surface of the first substrate 11 and the second substrate 12 in a grid structure 22 corresponding to the pattern shape for separating the display pixel intervals in the row and column directions of the display 1.

[0046] Preferably, the functional structure layer 21 of the solar cell 2 is arranged on the inner and / or outer surface of the second substrate 12, which is the substrate of the display 1 away from the user, and the second substrate 12 is made of transparent or semi-transparent material.

[0047] As Figure 3 Preferably, when the functional structure layer 21 of the solar cell 2 is arranged on the inner surface of the first substrate 11 and / or the second substrate 12, the solar cell 2 is a first type of cell, and the electrode of the solar cell 2, i.e. the anode 211 of the solar cell 2, is connected to the lead-out electrode prearranged on one side of the display 1 through the conductive particles 3 or conductive adhesive prearranged between the anode 211 of the solar cell 2 and the display electrode 15. The anode 211 of the solar cell 2 can be arranged inside the sealing adhesive 6 bonding the first substrate 11 and the second substrate 12, or arranged outside the sealing adhesive 6; when arranged outside the sealing adhesive 6, it can be arranged inside the device (in the box) or outside the device (out of the box). The electrode of the solar cell 2, i.e. the anode 211 of the solar cell 2, is connected to the lead-out electrode prearranged on one side of the display 1 through the conductive particles 3 or conductive adhesive prearranged inside the device box, outside the device box or inside the sealing adhesive 6, and finally the terminal of the display electrode 15 and the lead-out electrode of the solar cell 2 are output together to the driving IC or driving mainboard through the flexible circuit board or binding method.

[0048] As Figure 4As shown, preferably, when the functional structure layer 21 of the solar cell 2 is arranged on the inner surface of the first substrate 11 and / or the second substrate 12, the solar cell 2 is a first type of cell, and the display electrode 15 is connected to the lead-out electrode arranged on one end of the display 1 through the conductive particles 3 or conductive adhesive arranged between the anode 211 of the solar cell 2 and the display electrode 15. The display electrode 15 can be arranged inside the sealing adhesive 6 bonding the first substrate 11 and the second substrate 12, or arranged outside the sealing adhesive 6; when arranged outside the sealing adhesive 6, the display electrode 15 can be arranged inside the device or outside the device. The display electrode 15 is connected to the lead-out electrode arranged on one side of the display 1 through the conductive particles 3 arranged inside the device box, outside the box, or inside the sealing adhesive 6, and finally the terminal of the display electrode 15 and the lead-out electrode of the solar cell 2 are output together to the driving IC or driving mainboard through the flexible circuit board or binding method.

[0049] As shown, preferably, when the functional structure layer 21 of the solar cell 2 is arranged on the outer surface of the first substrate 11 and / or the second substrate 12, the solar cell 2 can be a second type of cell, and the electrode of the solar cell 2 is connected to the lead-out electrode arranged on one end of the display 1 through the metal wire 4. The electrode of the solar cell 2 is connected to the display electrode 15 on one side through the binding method of the metal wire 4, and finally the terminal of the display electrode 15 and the lead-out electrode of the solar cell 2 are output together to the driving IC or driving mainboard through the flexible circuit board or binding method. Figure 6 As shown, preferably, when the functional structure layer 21 of the solar cell 2 is arranged on the outer surface of the first substrate 11 and / or the second substrate 12, the solar cell 2 can be a second type of cell, and the electrode of the solar cell 2 and the display electrode 15 are connected through the Y-shaped FPC 5, and the terminals of the two branches of the Y-shaped FPC 5 are connected to the electrode of the solar cell 2 and the display electrode 15, respectively. The electrode of the solar cell 2 and the display electrode 15 are connected through the binding method of the Y-shaped FPC 5, and finally the terminal of the display electrode 15 and the lead-out electrode of the solar cell 2 are output together to the driving IC or driving mainboard.

[0050] Figure 7 As shown, preferably, when the functional structure layer 21 of the solar cell 2 is arranged on the outer surface of the first substrate 11 and / or the second substrate 12, the solar cell 2 can be a second type of cell, and the electrode of the solar cell 2 and the display electrode 15 are connected through the Y-shaped FPC 5, and the terminals of the two branches of the Y-shaped FPC 5 are connected to the electrode of the solar cell 2 and the display electrode 15, respectively. The electrode of the solar cell 2 and the display electrode 15 are connected through the binding method of the Y-shaped FPC 5, and finally the terminal of the display electrode 15 and the lead-out electrode of the solar cell 2 are output together to the driving IC or driving mainboard.

[0051] Preferably, a water and oxygen barrier film layer is further arranged on the first substrate 11 and the second substrate 12, which is a single-layer film or multi-layer film with water and oxygen barrier function made by interlacing organic film layers and / or inorganic film layers, and the water vapor barrier effect is evaluated by the WVTR value, and the WVTR range is 2-6 g / m 2 / day.

[0052] As shown, preferably, when the functional structure layer 21 of the solar cell 2 is arranged on the outer surface of the first substrate 11 and / or the second substrate 12, the solar cell 2 can be a second type of cell, and the electrode of the solar cell 2 and the display electrode 15 are connected through the Y-shaped FPC 5, and the terminals of the two branches of the Y-shaped FPC 5 are connected to the electrode of the solar cell 2 and the display electrode 15, respectively. The electrode of the solar cell 2 and the display electrode 15 are connected through the binding method of the Y-shaped FPC 5, and finally the terminal of the display electrode 15 and the lead-out electrode of the solar cell 2 are output together to the driving IC or driving mainboard. Figure 5 ​As shown, preferably, the functional structure layer 21 of the solar cell 2 comprises an anode 211, a PV photovoltaic layer 212 and a cathode 213 arranged in a stack, and further comprises an anode auxiliary metal electrode 216, a cathode protective layer 214 and a transparent desiccant 215. Further, the transparent desiccant 215 is divided into two types. One is a transparent liquid mainly composed of liquid organic metal compound aluminum alcohol (isopropyl alcohol aluminum and / or n-propyl alcohol aluminum) (50% to 90% -wt%) and liquid organic polymer resin (5% to 50% -wt%), which has very strong water and oxygen adsorption characteristics, and does not react with the cathode 213 and the cathode protective layer 214. Therefore, when using such a transparent desiccant 215, the cathode protective layer 214 can not be used. The other is a liquid desiccant 215 mixed in a certain proportion with perchlorate (10% to 15% -wt%), polyethylene glycol ester (60% to 80% -wt%), modified acrylic resin (5% to 15% -wt%) and a small amount of additives (1% to 5%). Since such a desiccant 215 can corrode some cathode 213 materials (metals and alloys), when such materials are used, the transparent cathode 213 must be protected (i.e. a cathode protective layer 214 is made on the outer surface of the cathode 213). Perchlorate is mainly composed of lithium perchlorate, sodium perchlorate, potassium perchlorate, calcium perchlorate, magnesium perchlorate and other compounds composed of first main group, second main group and third main group metals and perchloric acid. The coating amount of the transparent desiccant 215 needs to be set in equal amount according to the volume of the sealing cavity formed by the substrates of the solar cell 2 device, i.e. the first substrate 11 and the second substrate 12 and the sealing glue 6, to avoid bubbles in the sealing cavity, which will affect the display effect of the display 1 arranged below the solar device.

[0053] Preferably, the anode 211 layer is generally made of metal oxide (ITO, AZO, FTO, ATO, etc.), nano-silver, metal element or alloy (magnesium, silver element or alloy) or high-conductivity organic polymer material (such as PEDOT:PSS). When the anode 211 is made of metal oxide, nano-silver or high-conductivity organic polymer material, its thickness is set in the range of 20 nm to 5 μm. When the anode 211 is made of metal element or alloy material, its thickness is set in the range of 10 to 30 nm. Preferably, the anode 211 can also be matched with a metal auxiliary electrode to improve the conductivity of the electrode and thus improve the conversion efficiency of the device.

[0054] Further preferably, the anode auxiliary metal electrode 216 layer is generally made of low-resistivity metal elements Al, Ag, Cu, Mo, Pt, Ti, etc. by PVD or MOCVD coating, and then etched by yellow light.

[0055] Preferably, the cathode 213 layer is generally made of metal oxides (ITO, AZO, FTO, ATO, etc.), nano-silver, metal elements or alloys (magnesium, silver elements or alloys), or high-conductivity organic polymer materials (such as PEDOT:PSS), etc. When the cathode 213 is made of metal oxides, nano-silver, or high-conductivity organic polymer materials, the thickness thereof is set in the range of 20 nm to 5 μm. When the cathode 213 is made of metal elements or alloys, the thickness thereof is set in the range of 10 to 30 nm.

[0056] With continued reference to Figure 1 , preferably, the cathode 213 is connected to the cathode 213 lead previously laid in the same plane as the substrate anode 211 through a via or at the periphery of the PV layer. Preferably, when the cathode 213 is connected through a via or at the periphery of the PV layer, an insulating layer 23 is also previously set at the inner wall of the PV opening and the cross section of the PV periphery, so as to ensure that the cathode 213 does not contact the cross section of the PV, and thus no current leakage occurs, further ensuring the electrical performance of the device. The insulating layer 23 can be made of organic polymer materials or inorganic silicon nitride, silicon oxide, silicon oxynitride, or a multi-layer film made of overlapping organic and inorganic materials. The diameter of the via is less than 10 μm, and at least one via is provided. When the cathode 213 is connected in the manner of peripheral overlap, the overlapping area is greater than 20 square microns.

Claims

1. A display, characterized in that, The display is equipped with a solar cell. The display includes a first substrate and a second substrate. The solar cell includes a substrate and a functional structure layer. The substrate of the solar cell is the first substrate and / or the second substrate of the display. The functional structure layer of the solar cell is disposed on the inner surface of the first substrate and / or the second substrate. The functional structure layer includes an anode, a PV photovoltaic layer and a cathode stacked together. The functional structure layer also includes an anode auxiliary metal electrode and an insulating layer disposed between the cathode and the anode auxiliary metal electrode. The functional structure layer of the solar cell in the VA area of ​​the display is arranged in a grid structure or in a whole-surface manner. When arranged in the grid structure, the grid structure overlaps with the spacing of the sub-pixels in the VA area of ​​the display. When arranged in a whole-surface manner, light of the same color as the sub-pixel can pass through the functional structure layer of the solar cell. When the functional structure layer of the solar cell is disposed on the inner surface of the first substrate and the second substrate, the structure of the functional structure layer of the solar cell in the VA region is a dot structure without photovoltaic function. The horizontal cross-sectional shape of the dot structure is circular or rectangular. The outer dimensions of the circular or rectangular structure are less than or equal to 30 μm, and the height is 0.5 to 20 μm. The dot structure can serve as a cell thickness support for the display, so that the display effect of the display is uniform. The functional structure layer of the dot-shaped solar cell in the VA region is integrally formed with the functional structure layer of the solar cell in the non-VA region.

2. A display according to claim 1, characterized in that, The functional structure layer of the solar cell is disposed in the non-VA area and / or VA area on the inner surface of the first substrate.

3. A display according to claim 1, characterized in that, The functional structure layer of the solar cell is arranged in the VA region on the inner surface of the first substrate and the non-VA region on the inner surface of the second substrate.

4. A display according to claim 1, characterized in that, The functional structure layer of the solar cell is disposed in the non-VA area on the inner surface of the first substrate and the second substrate, and in the VA area on the inner surface of the first substrate and the second substrate.

5. A display according to claim 4, characterized in that, The functional structure layer of the solar cell is arranged in a grid structure in the VA area on the inner surface of the first substrate and the second substrate. The grid structure corresponds to the pattern shape used to separate the display pixel intervals in the row and column directions of the display, respectively.

6. A display according to claim 1, characterized in that, The functional structure layer of the solar cell is arranged on the entire inner surface of the second substrate, which is the substrate on the side of the display away from the user; wherein, at least the cathode is made of a transparent or semi-transparent material.

7. A display according to claim 1, characterized in that, When the functional structure layer of the solar cell is disposed on the inner surface of the first substrate and / or the second substrate, the electrode of the solar cell is connected to a lead-out electrode at one end of the display via conductive particles or conductive adhesive preset between the electrode of the solar cell and the display electrode; or the display electrode is connected to a lead-out electrode at one end of the solar cell via conductive particles or conductive adhesive preset between the electrode of the solar cell and the display electrode.

8. A display according to claim 1, characterized in that, It also includes a sealant for bonding the first substrate and the second substrate together, wherein the sealant is a photocurable resin or a thermocurable resin, and its water vapor barrier (WVTR) value is 2 to 6 g / m³. 2 / day.

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