CN214043659U - Display device capable of generating electricity - Google Patents

Abstract

The utility model discloses a display device that can generate electricity, display device that can generate electricity includes: a photovoltaic unit (1) comprising a solar energy absorbing layer (11); a display unit (2) comprising an array of light emitting chips (21); the solar energy absorbing layer (11) faces the light source, the light emitted by the light emitting chip (21) faces the light source, and the light emitting chip (21) is closer to the light source relative to the solar energy absorbing layer (11); the display unit (2) is transparent; the light emitting chip (21) is an LED chip. The utility model discloses combine photovoltaic material autonomous power generation, just the utility model discloses a photovoltaic receipts plain noodles and LED component light emitting area are with one side, and photovoltaic unit and display element are all outdoor, and the viewer watches outdoors. Additionally the utility model discloses the utilization is covered the brilliant mode and is directly covered the brilliant on the front bezel with the LED chip, and the resolution ratio of LED display screen is higher, and the display device cost that can generate electricity is lower.

Description

Display device capable of generating electricity

Technical Field

The utility model belongs to display field and photovoltaic field, concretely relates to display device that can generate electricity.

Background

With the continuous improvement of display technologies, Light Emitting Diodes (LEDs) are more and more mature when applied to large displays, and the demand of large displays applied to rental markets, retail department stores, and conference rooms is increased, the market scale of global LED display screens in 2022 will reach 93.49 hundred million dollars, and the estimated composite growth rate in 2018-2022 is 12%.

In addition, as the small-pitch display technology becomes more mature, the outdoor display gradually develops toward the small pitch (P3.0-P4.0), and the development is toward refinement. The market scale in 2022 is about 5.21 hundred million dollars, and CAGR in 2018-2022 is estimated to reach 35%. However, as smaller pitch displays are developed, the number of LEDs used increases rapidly, with high power consumption. Especially, outdoor LED displays have high power consumption and high cost because they have both clear image quality and brightness in a bright environment in the daytime.

The European Union brings near-zero energy consumption buildings (nZEB) into European Union building energy benefit instructions EPBD from 2010, and forces all public buildings at the bottom of 12 months in 2018 and all new buildings at the bottom of 2020 to reach the nZEB target, and adopts an active power generation capacity building, and the photovoltaic building integrated product is one of the measures taken towards the target in combination with the photovoltaic building integrated product.

Invention patent CN109118974A, name: the patent of photovoltaic display screen wall subassembly and photovoltaic display screen wall system discloses a photovoltaic display curtain wall subassembly and photovoltaic display curtain wall system. The module comprises an inner substrate, a transparent display layer, a photovoltaic chip layer and a transparent outer plate which are sequentially stacked from inside to outside; the display layer is provided with a luminous display part, the photovoltaic chip layer is light-permeable, and the photovoltaic chip layer is electrically connected with the luminous display component. The photovoltaic display curtain wall assembly combines the photovoltaic assembly with a conventional curtain wall display device, the photovoltaic assembly generates power and can supply the power to the display device, the functions of curtain wall lighting and display are realized, and the application field of the photovoltaic assembly is widened; the volt display curtain wall assembly disclosed by the invention has the advantages of uniform and continuous display, good effect, no light path distortion, adjustable display size and precision, and capability of avoiding safety problems such as aging, falling off, electric leakage and the like caused by exposure of a display part; the photovoltaic chip layer is arranged on the outer side of the display layer containing the display part, so that the hot spot effect caused by the front photovoltaic chip can be avoided, and the application safety of the photovoltaic module can be improved.

But this photovoltaic display screen wall subassembly has the problem: 1. the photovoltaic chip layer is electrically connected with the light-emitting display component, and the photovoltaic chip layer can generate power current and voltage due to the change of the sunlight intensity, so that a stable power supply cannot be provided, and the light-emitting display component is damaged; 2. the photovoltaic chip is arranged on the outer side of the light-emitting component, so that the photovoltaic chip needs to be provided with a plurality of light holes, the original structure of the photovoltaic chip is damaged, and the power generation amount of the photovoltaic chip is reduced; 3. the structural material cost of four layers of glass substrates, three layers of light-transmitting sealing adhesive layers, and two layers of glass, one layer of light-transmitting sealing adhesive layer, is relatively high.

Invention patent CN105042493B, name: a solar photoelectric glass and a manufacturing method thereof are disclosed, belonging to the technical field of building integration. The photoelectric glass aims to change the overall structure of the photoelectric glass, can actively generate electricity, reduce wiring in a body and improve the effect. The solar cell is formed by fusing an LED solar energy and a luminescent device, and the output ends of positive and negative electrode welding strips of the cell are connected with a controller for energy storage to form an internal self-powered system. And scribing lines and section lines by using laser etching regions to form a front electrode layer, a photoelectric conversion layer and a back electrode layer. The controller is arranged in the control box on the outer wall of the inner layer glass. The invention breaks through the problem that the photoelectric glass always depends on an external power supply device to supply power, and replaces the traditional wiring with the bus belt and the conductive film, so that the integral structure becomes simple, the production efficiency is high, and the cost is low.

However, the solar photoelectric glass has the following problems: 1. the LED lamp beads are arranged on the back of the solar cell, namely, outdoor sunlight enables the solar panel to generate electricity in the daytime, but LED luminous display is indoors and cannot achieve the effect of outdoor display, namely, the light receiving surface and the light emitting surface of a product are not on the same side.2. an LED chip is arranged on the back of the thin film solar cell, in order to place the LED chip, each solar cell section line 101 is disconnected in an LED area, so that the manufacturing process of the thin film solar cell is difficult, and the yield is reduced; therefore, the LED chips are not directly attached to the film layer of the thin-film solar cell, and 3. the wiring and arrangement of the invention can not achieve the resolution of the image quality higher than the common high definition, and only can display the traditional eight-segment type LED font display equipment.

Utility model patent CN 204557013U name: the patent of a photovoltaic display device provides a photovoltaic display device, includes photovoltaic module and display device's stromatolite, display device is the liquid crystal display unit, photovoltaic module passes through the tie coat with display device and fixes, by photovoltaic module's power output provides power input for display device, photovoltaic module is non-light tight photovoltaic module, the natural light of photovoltaic module one side provides the backlight for display device. The utility model discloses make full use of photovoltaic power generation's electric energy realizes and photovoltaic module's integration, provides effectual solution for outdoor display configuration.

However, the photovoltaic display device has problems that: 1. because the liquid crystal display unit is far away from the light receiving surface and is positioned at the back of the photovoltaic component, the photovoltaic component needs to be light-transmitting, but the power generation amount of the light-transmitting component is lower than that of the light-tight component, and the availability of the photovoltaic component is directly influenced; 2. the backlight source of the liquid crystal display unit is outdoor natural light, and the light intensity of the outdoor natural light is different along with the change of weather, so that the ghost and the uneven light intensity of the display quality are directly caused.

In summary, in order to solve the problems in the prior art: 1. defects of different sides of the photovoltaic light receiving surface and the light emitting surface of the display unit; 2. the display assembly structure cannot be matched with the defects of various photovoltaic material power generation modules; 3. the use of more than three glass substrates for the product has the disadvantage of increasing the thickness and the cost; 4. the product can not reach the defect of high-resolution display.

In order to solve the above problems, the utility model is provided

SUMMERY OF THE UTILITY MODEL

The utility model discloses combine photovoltaic material autonomous power generation, just the utility model discloses a photovoltaic receipts plain noodles and LED component light emitting area are with one side, and photovoltaic unit and display element are all outdoor, and the viewer watches outdoors. Additionally the utility model discloses the utilization is covered the brilliant mode and is directly covered the brilliant on the front bezel with the LED chip, and the resolution ratio of LED display screen is higher, and the display device cost that can generate electricity is lower.

The utility model discloses the purpose is realized through following technical scheme:

the utility model provides a but display device of electricity generation, it includes:

a photovoltaic unit 1 comprising a solar energy absorbing layer 11;

a display unit 2 comprising an array of light emitting chips 21, each light emitting chip 21 having separate positive and negative conductive contacts 211 so that it can be independently controlled;

the solar energy absorbing layer 11 faces a light source, the light emitting chip 21 emits light towards the light source, the light emitting chip 21 is positioned above the solar energy absorbing layer 11, and the light emitting chip 21 is closer to the light source relative to the solar energy absorbing layer 11;

the display unit 2 is transparent so that a light source is irradiated through the display unit 2 to the solar energy absorbing layer 11;

the power supply of the photovoltaic unit 1 is output to an energy storage system or an inverter, and the power supply input of the display unit 2 is provided by the energy storage system or commercial power.

The reason why the power output of the photovoltaic unit 1 is not directly supplied to the display unit 2 as the power input is that the intensity of the sunlight is unstable, which results in unstable power generated by the photovoltaic unit 1. Therefore, the power supply of the photovoltaic unit 1 is firstly output to the energy storage system or the inverter, and the power supply input of the display unit 2 is provided by the energy storage system or the commercial power, so that the power supply input of the display unit 2 is ensured to be stable.

The light emitting chip 21 is an LED chip.

The light source is natural sunlight.

Preferably, the display unit 2 further comprises a display front plate 22, the display front plate 22 is transparent and is selected from rigid glass or flexible material, the rigid glass is selected from tempered glass, semi-tempered glass and float glass; the flexible material is selected from PI (polyimide film), a water-oxygen resistant film, a polyester film (PET) or a tetrafluoroethylene non-woven base material film (ETFE). The flexible material has water-blocking and oxygen-blocking functions.

Preferably, the display unit 2 further comprises a first conductive material film layer 23, wherein the first conductive material film layer 23 is transparent and is selected from an Indium Tin Oxide (ITO) doped material, an Aluminum Zinc Oxide (AZO) doped material, a Fluorine Tin Oxide (FTO) doped material or other conductive oxide material, nano silver or nano copper material.

Wherein the first conductive material film layer 23 needs to be patterned.

Preferably, the photovoltaic unit 1 comprises a conductive front electrode layer 12, a solar energy absorption layer 11 and a conductive back electrode layer 13 which are arranged in sequence, wherein the conductive front electrode layer 12 is transparent; the conductive back electrode layer 13 is transparent or opaque; the solar energy absorbing layer 11 is selected from a copper indium selenium CuInSe series, a silicon thin film absorbing layer series, a cadmium telluride thin film series or a perovskite thin film material in a III-VI series; the CuInSe series is selected from CuInSe, CuInGaSe or CuInGaSe-S; the conductive front electrode layer 12 is selected from an oxide semiconductor material, a transparent nano material, and a transparent polymer conductive material;

preferably, the photovoltaic unit 1 and the display unit 2 are fixed by bonding through a film layer 4, and the film layer 4 is located between the photovoltaic unit 1 and the display unit 2. The adhesive film layer 4 is formed by heating and pressurizing a transparent packaging adhesive sheet, and the transparent packaging adhesive sheet is selected from polyethylene-polyvinyl acetate copolymer (EVA), polyvinyl butyral (PVB) or ethylene-octene copolymer POE material;

the light-emitting chip 21 is attached to the surface of the first conductive material film layer 23, which is far away from the light source;

the side, away from the display unit 2, of the photovoltaic unit 1 is also provided with a first back plate 3, the first back plate 3 is transparent or opaque, the transparent material is selected from rigid glass or flexible material, and the rigid glass is selected from tempered glass, semi-tempered glass and float glass; the flexible material is selected from PI, a water-blocking oxygen film, PET or ETFE; the opaque material is selected from stainless steel sheet or aluminum foil sheet.

Preferably, the photovoltaic unit 1 is internally provided with a through hole 14 which longitudinally penetrates through the photovoltaic unit 1, from the side of the display front plate 22, the through hole 14 is internally provided with an insulating film layer 15, a second conductive material film layer 16 and an encapsulation layer 17 in sequence, and the light emitting chip 21 is positioned in the second conductive material film layer 16; the insulating film layer 15 and the second conductive material film layer 16 are both transparent, and the insulating film layer 15 is made of an oxide film or a nitride film material; the second conductive material film 16 is selected from ITO, AZO, FTO, or other conductive oxide material, nano silver or nano copper material; the packaging layer 17 is transparent or opaque and is selected from films, EVA, PVB and POE materials.

The light emitting chip 21 is attached to the surface of the second conductive material film 16 away from the light source.

Wherein the second layer of conductive material 16 is patterned.

The side, away from the display unit 2, of the photovoltaic unit 1 is also provided with a second back plate 5, the second back plate 5 is transparent or opaque, the transparent material is selected from glass or a flexible material, and the flexible material is selected from PET or ETFE; the opaque material is a multi-layer structure of fluoroplastic.

The opaque material includes:

a) example of TPT Structure: polyvinyl fluoride film (PVF)/PET/PVF; polyvinylidene fluoride (PVDF)/PET/PVDF

b) TPE structure example: PVF/PET/EVA Polyolefin (PO); PVDF/PET/PO; THV/PET/EVA

c) Example of PET Structure: weather-proof PET/common PET/PO

d) AAA Structure example: modified polyamide PA/modified PA

e) Coating structure example: cross-linked fluorine coating/PET/fluorine coating; fluorine coating/PET/fluorine coating; fluorine coating/weather-resistant PET/common PET/PO

T represents a fluorine-containing plastic film or the like; such as polyvinyl fluoride film (PVF); polyvinylidene fluoride (PVDF); THV (tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride copolymer); ECTFE (chlorotrifluoroethylene-ethylene copolymer) and the like. P is PET film, polyethylene terephthalate film; e is EVA (low VA content) or polyolefin PO film; a is modified polyamide (PA for short); f is fluorocarbon coating, PTFE (polytetrafluoroethylene) coating, PVDF (polyvinylidene fluoride) coating, FEVE vinyl fluoride and vinyl ether copolymer;

the thickness of the second backsheet 5 is 2-6mm, preferably 4 mm.

Preferably, the photovoltaic unit 1 is a solar cell, and the solar energy absorption layer 11 is located in the solar cell. The solar cells are connected in series by metal bus bars; the solar cell is selected from a monocrystalline silicon substrate cell, a polycrystalline silicon substrate cell, a copper indium gallium selenide cell, a gallium arsenide cell, a cadmium telluride cell, a perovskite cell and an organic photovoltaic material cell.

Preferably, the photovoltaic unit 1 and the display unit 2 are bonded and fixed through an adhesive film layer 4, the solar cells are connected in series to form a solar cell string, and the solar cell string is fixed in the adhesive film layer 4;

the light emitting chip 21 is attached to the surface of the first conductive material film layer 23 away from the light source.

The side, away from the display unit 2, of the photovoltaic unit 1 is also provided with a second back plate 5, the second back plate 5 is transparent or opaque, the transparent material is selected from glass or a flexible material, and the flexible material is selected from PET or ETFE; the opaque material is a multi-layer structure of fluoroplastic.

The opaque material includes:

a) example of TPT Structure: PVF/PET/PVF; PVDF/PET/PVDF

b) TPE structure example: PVF/PET/EVA (PO); PVDF/PET/PO; THV/PET/EVA

c) Example of PET Structure: weather-proof PET/common PET/PO

d) AAA Structure example: modified PA/modified PA

e) Coating structure example: cross-linked fluorine coating/PET/fluorine coating; fluorine coating/PET/fluorine coating; fluorine coating/weather-resistant PET/common PET/PO

T represents a fluorine-containing plastic film or the like; such as polyvinyl fluoride film (PVF); PVDF; THV (tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride copolymer); ECTFE (chlorotrifluoroethylene-ethylene copolymer) and the like. P is PET film, polyethylene terephthalate film; e is EVA (low VA content) or polyolefin PO film; a is modified polyamide (PA for short); f is fluorocarbon coating, PTFE (polytetrafluoroethylene) coating, PVDF (polyvinylidene fluoride) coating, FEVE vinyl fluoride and vinyl ether copolymer;

the thickness of the second backsheet 5 is 2-6mm, preferably 4 mm.

The utility model discloses in the manufacturing method of the display device that can generate electricity in the first embodiment, including following step:

(11) providing a display front plate 22, wherein the thickness of the display front plate 22 is 2-6mm, and preferably 4 mm; depositing a first conductive material film layer 23 on the film coating surface of the display front plate 22, wherein the volume resistivity of the first conductive material film layer 23 is between 0.0001-0.01ohm-cm, and preferably 0.0002 ohm-cm; show that front panel 22 needs to be cleaned in advance for use;

(12) patterning the first conductive material film layer 23 by using an etching or coating method to form a conductive thin film circuit for controlling the light emitting chip 21; the etching method comprises laser etching, yellow light lithography etching and sand blasting etching; preferably, laser etching is carried out; coating methods (screen printing, dispensing);

(13) preparing a conductive contact 211 on the first conductive material film layer 23; placing the light-emitting chip 21 on the conductive contact 211 by using a flip chip method and using a chip mounting device, and heating to form conductive connection between the conductive contact 211 and the light-emitting chip 21; the conductive contact 211 can be a metal material, a polymer conductive material, an anisotropic conductive film, or a conductive ink; preferably metallic gold or gold alloy material;

(14) providing a first back plate 3, and depositing a conductive bottom electrode on the first back plate 3 to form a conductive back electrode layer 13; the conductive bottom electrode is preferably a molybdenum bottom electrode, and the thickness of the molybdenum bottom electrode is 100-500nm, preferably 300 nm;

(15) patterning by laser etching, and depositing a solar energy absorption layer 11 on the conductive back electrode layer 13, wherein the thickness of the solar energy absorption layer 11 is 1-4um, and preferably 2.5 um;

(16) laser etching patterning, and depositing a conductive front electrode layer 12 on the solar energy absorption layer 11 for internal lead serial connection; the conductive front electrode is preferably a transparent oxide semiconductor;

(17) the laminating machine places the transparent packaging film between the display unit 2 and the photovoltaic unit 1 for laminating, then utilizes heating and pressurizing equipment to bond the display unit 2 and the photovoltaic unit 1, and the transparent packaging film forms a film layer 4 between the display unit 2 and the photovoltaic unit 1, so that the display equipment capable of generating power is prepared.

The utility model discloses in the manufacturing method of the display device that can generate electricity in the second kind of embodiment, including following step:

(21) providing a display front plate 22, wherein the thickness of the display front plate 22 is 2-6mm, and preferably 4 mm; depositing a conductive front electrode on the film-coated surface of the display front plate 22 to form a conductive front electrode layer 12; show that front panel 22 needs to be cleaned in advance for use;

(22) patterning by laser etching, and depositing a solar energy absorption layer 11 on the conductive front electrode layer 12, wherein the thickness of the solar energy absorption layer 11 is 1-4um, and preferably 2.5 um;

(23) laser etching patterning, and depositing a conductive back electrode layer 13 on the solar energy absorption layer 11 for internal serial connection;

(24) selecting a light-emitting position, and carrying out laser etching to graphically divide the photovoltaic unit 1 to form a through hole 14 longitudinally penetrating through the photovoltaic unit 1 (namely completely penetrating through the photovoltaic unit 1), so that the display front plate 22 leaks out through the through hole 14;

the shape of the light-emitting position can be in a round point shape or a strip shape, the continuous etching area of the strip shape is parallel to the photocurrent transmission direction, and the continuous light-emitting area can not be perpendicular to the photocurrent transmission direction; here, the reason is that the continuous light emitting area is not operable because it cuts off the current when it is perpendicular to the direction of the optical current transmission.

(25) Depositing an insulating film layer 15 on the side of the photovoltaic unit 1 away from the display front plate 22 to isolate the subsequent second conductive material film layer 16 from contacting the solar conductive back electrode layer 13; the insulating film layer 15 may be silicon dioxide(SiO₂) Aluminum oxide (Al)₂O₃) Insulating film material, preferably silicon dioxide (SiO)₂) Volume resistivity between 0.001 and 100ohm-cm, preferably 20 ohm-cm;

(26) depositing a second film layer 16 of conductive material on the insulating film layer 15, the second film layer 16 of conductive material having a volume resistivity of between 0.0001-0.01ohm-cm, preferably 0.0002 ohm-cm; patterning the second conductive material film layer 16 by using an etching method to form a conductive thin film circuit for controlling the light emitting chip 21; the second conductive material film 16 can be an oxide semiconductor, a transparent nanomaterial, a transparent conductive polymer, a metal film, an inorganic composite film, preferably an oxide semiconductor, an indium tin oxide transparent conductive film;

(27) patterning the transparent conductive film by using a coating method (screen printing, dispensing coating) or an etching method (laser etching, yellow light lithography etching and sand blasting etching) (preferably laser etching) to form a conductive thin film circuit for controlling the LED; preparing a conductive contact 211 on the second conductive material film layer 16; placing the light-emitting chip 21 on the conductive contact 211 by using a flip chip method and using a chip mounting device, and heating to form conductive connection between the conductive contact 211 and the light-emitting chip 21;

(28) providing a second back plate 5, placing a transparent packaging film between the second conductive material film 16 and the second back plate 5 by using a laminating machine, laminating, bonding the second conductive material film 16 and the second back plate 5 unit by using heating and pressurizing equipment, forming a packaging layer 17 between the second conductive material film 16 and the second back plate 5 unit by using the transparent packaging film, and preparing the display equipment capable of generating power.

The utility model discloses in the third embodiment the manufacturing method of display device that can generate electricity, including following step:

(31) providing a display front plate 22, wherein the thickness of the display front plate 22 is 2-6mm, and preferably 4 mm; depositing a first conductive material film layer 23 on the film coating surface of the display front plate 22, wherein the volume resistivity of the first conductive material film layer 23 is between 0.0001-0.01ohm-cm, and preferably 0.0002 ohm-cm; show that front panel 22 needs to be cleaned in advance for use;

(32) patterning the first conductive material film layer 23 by using an etching method to form a conductive thin film circuit for controlling the light emitting chip 21; the etching method comprises laser etching, yellow light lithography etching and sand blasting etching; preferably, laser etching is carried out;

(33) preparing a conductive contact 211 on the first conductive material film layer 23; placing the light-emitting chip 21 on the conductive contact 211 by using a flip chip method and using a chip mounting device, and heating to form conductive connection between the conductive contact 211 and the light-emitting chip 21; the conductive contact 211 can be a metal material, a polymer conductive material, an anisotropic conductive film, or a conductive ink; preferably metallic gold or gold alloy material;

(34) connecting the solar cell chips in series by using the bus bars to form a solar cell string;

(35) providing a second back plate 5 and two packaging films, wherein one packaging film must be transparent, arranging a display front plate 22, a first conductive material film layer 23, a transparent packaging film, a solar cell string (a solar cell chip connected in series), and the other packaging film (the other packaging film is transparent or opaque, and cannot cause shading problem even if the other packaging film is opaque because the other packaging film is already behind the solar cell chip) with the second back plate 5 in sequence, laminating, bonding the display unit 2 and the photovoltaic unit 1 by using a heating and pressurizing device, forming a film layer 4 between the display unit 2 and the photovoltaic unit 1 by the two packaging films, and fixing the solar cell string in the film layer 4.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. compare the LED display element that does not generate electricity of tradition, only power consumptive electricity production does not, the utility model discloses combine photovoltaic material independently to generate electricity, energy storage system or dc-to-ac converter are exported to photovoltaic unit 1's power.

2. Compared with the traditional photovoltaic display, the photovoltaic light receiving surface (the surface for absorbing the sun light) of the traditional photovoltaic display is not on the same side with the light emitting surface of the LED element, namely, the photovoltaic unit is hung outdoors and used for absorbing the sunlight, and the display unit is arranged indoors and used for a viewer to watch indoors; however, the utility model discloses a photovoltaic light-receiving surface and LED component light emitting area are same one side, can be used for building outdoor use, that is to say, photovoltaic unit and display element are all outdoor, and the viewer watches outdoors.

3. The utility model discloses a light-emitting chip 21 for solar energy absorbed layer 11 is closer to the light source, so need not to destroy solar energy absorbed layer 11, just can make the LED light beam reach display effect, need not destroy the photovoltaic absorbed layer to photovoltaic unit 1 power generation's decline has been avoided.

4. With current LED for display screen LED lamp pearl, LED lamp pearl utilizes the routing or flip chip technique encapsulation LED chip, see fig. 7, and traditional LED lamp pearl structure contains support P1, gold thread P2, lens P3, chip P4, phosphor powder P5, epoxy and modular strip P6 isotructure, and is with high costs, and the structure is complicated, and inside LED chip luminousness is low, the utility model discloses an utilize the chip directly to flip the chip on the display screen front bezel, because the LED chip is thinner, the luminousness is higher, more do benefit to the light source and pass display unit 2 shines solar energy absorbed layer 11, and the cost is lower.

5. Compare in LED lamp pearl for traditional LED display, the lamp pearl has extra packaging body cladding LED chip, can't reach the high resolution and show, the utility model discloses the utilization covers the crystal mode and directly covers the crystal with the LED chip on the front bezel, because LED chip area is far less than LED lamp pearl, so can promote the resolution ratio of LED display screen.

6. The utility model discloses utilize flip chip mode to combine LED chip and display front bezel, can arrange the application of different photovoltaic material power generation structures in pairs, be not restricted to single photovoltaic power generation material structure

7. The utility model discloses the utilization covers brilliant mode and combines LED chip and display front bezel, compares in traditional display structure and has lacked one or 2 glass, has reduced thickness and has also reduced the cost.

8. The utility model discloses in every luminescence chip 21 have positive negative pole conductive contact 211 alone to carry out the individual control to it.

Drawings

Fig. 1 is a schematic structural diagram of a display device capable of generating power according to embodiment 1 of the present invention;

fig. 2 is a flowchart of a manufacturing process of a display device capable of generating power according to embodiment 1 of the present invention;

fig. 3 is a schematic structural diagram of a display device capable of generating power according to embodiment 2 of the present invention;

fig. 4 is a flowchart of a manufacturing process of a display device capable of generating power according to embodiment 2 of the present invention;

fig. 5 is a schematic structural view of a display device capable of generating power according to embodiment 3 of the present invention;

fig. 6 is a flowchart of a manufacturing process of a display device capable of generating power according to embodiment 3 of the present invention;

FIG. 7 is a schematic diagram of a conventional LED lamp bead structure in the prior art;

the names of the reference symbols in the description of the drawings are: the solar cell comprises a photovoltaic unit 1, a display unit 2, a first back plate 3, a glue film layer 4, a second back plate 5, a solar energy absorption layer 11, a conductive front electrode layer 12, a conductive back electrode layer 13, a through hole 14, an insulating film layer 15, a second conductive material film layer 16, a packaging layer 17, a light emitting chip 21, a display front plate 22, a first conductive material film layer 23, a conductive contact 211, a P1 support, a P2 gold wire, a P3 lens, a P4 chip, P5 fluorescent powder and a P6 mold strip.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.

Example 1

This example is a preparation of a first type of power-generating display device shown in fig. 1, and the preparation flow refers to fig. 2.

A first type of display device that can generate electricity: a component of a product of a power generating display device for a substrate type (substrate type) thin film photovoltaic material (such as a rigid substrate CIGS thin film photovoltaic) is provided with a packaging unit in front of a solar energy absorption layer from a light receiving surface direction.

(1) Display unit 2

i. Display front plate 22 (toughened glass)

A first film layer of conductive material 23 (indium tin oxide)

Transparent conductive films need to be patterned

Conductive contact 211 (gold or gold alloy material)

v. light emitting chip 21

(2) Adhesive film layer 4

(3) Photovoltaic unit 1

i. Transparent conductive front electrode layer 12 (transparent oxide semiconductor)

Solar energy absorber 11 (CIGS absorber)

Conductive back electrode layer 13 (molybdenum bottom electrode)

First back sheet 3 (transparent float glass)

The specific manufacturing method comprises the following steps:

the substrate type thin film photovoltaic material is characterized in that a packaging unit is arranged in front of a solar energy absorption layer,

the defect that the photovoltaic light receiving surface and the light emitting surface of the display unit are different is overcome.

The purpose preparation photovoltaic power generation curtain wall display screen utilizes base plate formula film photovoltaic material preparation photovoltaic power generation curtain wall display screen, and luminous unit (display element 2) and photovoltaic unit 1 can make simultaneously respectively.

(11) A display front plate 22, which is selected from rigid glass, after 4mm display front plate toughened glass is cleaned, a first conductive material film layer 23 (indium tin oxide transparent conductive film) is deposited on the film coating surface of the toughened glass, and the volume resistivity is 0.0002 ohm-cm;

(12) patterning the first conductive material film layer 23 by using a laser etching method to form a conductive thin film circuit for controlling the LED light-emitting chip 21,

(13) preparing a conductive contact 211 on the first conductive material film layer 23, wherein the conductive contact 211 is made of metal gold or a gold alloy material; placing the light-emitting chip 21 on the conductive contact 211 by using a flip chip manner and using a chip mounting device, and heating to form conductive connection between the contact and the LED chip;

the light emitting surface of the LED chip and the light receiving surface of the photovoltaic material are combined on the same side by a flip chip mode (the problem of different sides of the traditional photovoltaic display device is solved);

(14) manufacturing a III-VI solar thin film battery, providing a first back plate 3 (substrate), and cleaning the substrate (transparent float glass); depositing a conductive back electrode layer 13 on the substrate, wherein the conductive back electrode layer is selected from molybdenum bottom electrodes, and the thickness of the molybdenum bottom electrodes is 300 nm;

(15) the patterned film is etched by laser, and a solar energy absorbing layer 11 (a copper indium gallium selenide absorbing layer) is deposited on the conductive back electrode layer 13, wherein the thickness of the solar energy absorbing layer is 2.5 mu m;

(16) the laser etching graphical film, and depositing a transparent conductive front electrode layer 12 (transparent oxide semiconductor) on the solar energy absorption layer 11 for internal wire series connection;

(17) the laser etching graphical film, the laminating machine places the transparent packaging film between the display unit 2 and the photovoltaic unit 1 for laminating, then the heating and pressurizing equipment is utilized to bond the display unit 2 and the photovoltaic unit 1, the transparent packaging film forms a film layer 4 between the display unit 2 and the photovoltaic unit 1, and the photovoltaic power generation curtain wall display unit is completed.

Example 2

This example is a preparation of the first type of power-generating display device shown in fig. 3, and the preparation flow refers to fig. 4.

A second type of power-generating display device: the component parts of the power generating display device product aiming at the upper substrate type thin film photovoltaic material (such as an amorphous silicon thin film photovoltaic module, a cadmium telluride thin film photovoltaic module, a perovskite thin film photovoltaic module and the like) are arranged from the light receiving surface direction, and the upper substrate type is a solar energy absorbing layer and is provided with a packaging unit at the back.

(1) Photovoltaic unit 1:

i. transparent conductive front electrode layer 12 (transparent oxide semiconductor)

Solar energy absorber 11 (CIGS absorber)

Conductive back electrode layer 13 (molybdenum bottom electrode)

Patterning the solar cell structure, and etching to destroy part of the solar cell structure; the solar energy absorption layer is made to transmit light, the insulating substrate is exposed to place the light-emitting unit, and the etching area is larger than the light-emitting area of the light-emitting chip 21

(2) Insulating film layer 15 (silicon dioxide SiO)₂)

(3) The display unit comprises

i. Display front plate 22 (rigid glass)

i. A second film layer 16 of conductive material

ii transparent conductive film to be patterned

Conductive contact 211

Light emitting chip 21

(4) Encapsulation layer 17

(5) Second backboard 5 (rigid glass)

The specific manufacturing method comprises the following steps:

the upper substrate type thin film photovoltaic material refers to a packaging unit arranged behind a solar energy absorption layer, and aims to solve the defect that a photovoltaic light receiving surface and a light emitting surface of a display unit are different.

The purpose preparation photovoltaic power generation curtain wall display screen utilizes the last base plate formula film photovoltaic material preparation photovoltaic power generation curtain wall display screen, and photovoltaic unit must make earlier, and then continues the preparation luminescence unit (display element 2) on photovoltaic unit 1.

(21) The display front plate 22 is made of rigid glass, and after 4mm display front plate tempered glass is cleaned, a conductive front electrode is deposited on the film coating surface of the tempered glass to form a conductive front electrode layer 12;

(22) patterning by laser etching, and depositing a solar energy absorption layer 11 on the conductive front electrode layer 12, wherein the thickness of the solar energy absorption layer 11 is 2.5 um;

(23) laser etching patterning, and depositing a conductive back electrode layer 13 on the solar energy absorption layer 11 for internal serial connection;

(24) selecting a light-emitting position, and carrying out laser etching to graphically divide the photovoltaic unit 1 to form a through hole 14 longitudinally penetrating through the photovoltaic unit 1 (namely completely penetrating through the photovoltaic unit 1), so that the display front plate 22 leaks out through the through hole 14;

(25) depositing an insulating film layer 15 on the side of the photovoltaic unit 1 away from the display front plate 22 to isolate the subsequent second conductive material film layer 16 from contacting the solar conductive back electrode layer 13; the insulating film layer 15 is silicon dioxide (SiO)₂) Body ofThe integrated resistivity is 20 ohm-cm;

(26) a second conductive material film layer 16 (indium tin oxide transparent conductive film) having a volume resistivity of 0.0002ohm-cm was deposited on the insulating film layer 15.

(27) Patterning the transparent conductive film by using a laser etching method to form a conductive thin film circuit for controlling the LED;

preparing a conductive contact 211 (metallic gold or gold alloy material) on the second conductive material film layer 16;

placing the light-emitting chip on the conductive contact 211 by using a flip chip manner and using a chip mounting device, and heating to form conductive connection between the contact and the LED chip;

the light emitting surface of the LED chip and the light receiving surface of the photovoltaic material are combined on the same side by a flip chip mode (the problem of different sides of the traditional photovoltaic display device is solved);

(28) and (3) providing a second back plate 5 (rigid glass) with the thickness of 4mm, placing a transparent packaging film between the second conductive material film layer 16 and the second back plate 5 by using a laminating machine, laminating, bonding the second conductive material film layer 16 and the second back plate 5 unit by using heating and pressurizing equipment, and forming a packaging layer 17 by using the transparent packaging film (PVB) between the second conductive material film layer 16 and the second back plate 5 unit to complete the photovoltaic power generation curtain wall display unit.

Example 3

This example is a preparation of the first type of power-generating display device shown in fig. 5, and the preparation flow refers to fig. 6.

A third type of power-generating display device: the component parts of the power generation display equipment product aiming at the cell chip type photovoltaic material light emitting display (such as a monocrystalline silicon substrate cell piece, a polycrystalline silicon substrate cell piece, a copper indium gallium selenide cell piece, a gallium arsenide cell piece, a cadmium telluride cell piece, a perovskite cell piece, an organic photovoltaic material cell piece and the like) are as follows from the light receiving surface direction: the solar energy absorbing layer is between the two encapsulation units.

(1) Display unit 2

i. Display front plate 22 (toughened glass)

A first film layer of conductive material 23 (indium tin oxide)

Transparent conductive films need to be patterned

Conductive contact 211 (gold or gold alloy material)

v. light emitting chip 21

(2) A photovoltaic unit 1; the solar cell sheet (the solar energy absorbing layer is not on the front plate or the back plate), the solar cell sheet and the solar cell sheet are connected in series by using a metal bus bar, for example: monocrystalline silicon substrate cell piece, polycrystalline silicon substrate cell piece, copper indium gallium selenide cell piece, gallium arsenide cell piece, cadmium telluride cell piece, perovskite cell piece, organic photovoltaic material cell piece and the like

(3) Adhesive film layer 4

(4) Second backboard 5 (rigid glass)

The specific manufacturing method comprises the following steps:

the cell chip type photovoltaic material is characterized in that: the solar energy absorbing layer is arranged between the two packaging units, the photovoltaic power generation curtain wall display screen is manufactured by using a battery chip type material, and the light-emitting unit, the photovoltaic unit and the back plate can be manufactured respectively and simultaneously.

(31) A display front plate 22, which is selected from rigid glass, after 4mm display front plate toughened glass is cleaned, a first conductive material film layer 23 (indium tin oxide transparent conductive film) is deposited on the film coating surface of the toughened glass, and the volume resistivity is 0.0002 ohm-cm;

(32) patterning the first conductive material film layer 23 by using an etching method to form a conductive thin film circuit for controlling the light emitting chip 21;

(33) preparing a conductive contact 211 on the first conductive material film layer 23; placing the light-emitting chip 21 on the conductive contact 211 by using a flip chip method and using a chip mounting device, and heating to form conductive connection between the conductive contact 211 and the light-emitting chip 21;

the light emitting surface of the LED chip and the light receiving surface of the photovoltaic material are combined on the same side by a flip chip mode (the problem of different sides of the traditional photovoltaic display device is solved);

(34) connecting the solar cell chips in series by using the bus bars to form a solar cell string;

(35) providing a second back plate 5 and two packaging films, wherein one packaging film must be transparent, arranging a display front plate 22, a first conductive material film layer 23, a transparent packaging film, a solar cell string (a solar cell chip connected in series), and the other packaging film (the other packaging film is transparent or non-transparent, and even if the other packaging film is not transparent, the shading problem cannot be caused) with the second back plate 5 in sequence, combining the films, then bonding a display unit 2 and a photovoltaic unit 1 by using heating and pressurizing equipment, forming a film layer 4 between the display unit 2 and the photovoltaic unit 1 by the two packaging films, fixing the solar cell string in the film layer 4, and completing the cell chip type photovoltaic power generation curtain wall display unit.

Claims (10)

1. A display device capable of generating power, characterized by comprising:

a photovoltaic unit (1) comprising a solar energy absorbing layer (11);

a display unit (2) comprising an array of light emitting chips (21), each light emitting chip (21) having separate positive and negative conductive contacts (211);

the solar energy absorbing layer (11) faces a light source, the light emitted by the light emitting chip (21) faces the light source, and the light emitting chip (21) is closer to the light source relative to the solar energy absorbing layer (11);

the display unit (2) is transparent, and a light source can be irradiated to the solar energy absorption layer (11) through the display unit (2);

the light emitting chip (21) is an LED chip.

2. The power generable display device according to claim 1, characterized in that the display unit (2) further comprises a display front plate (22), the display front plate (22) being transparent.

3. A power generating display device according to claim 2, characterized in that the display unit (2) further comprises a first film layer (23) of an electrically conductive material, the first film layer (23) of an electrically conductive material being transparent.

4. The power generable display device according to claim 2, characterized in that the photovoltaic cell (1) comprises a conductive front electrode layer (12), a solar energy absorbing layer (11) and a conductive back electrode layer (13) arranged in sequence, the conductive front electrode layer (12) being transparent.

5. A power generating display device according to claim 3, characterized in that the photovoltaic unit (1) comprises a conductive front electrode layer (12), a solar energy absorbing layer (11) and a conductive back electrode layer (13) arranged in sequence, the conductive front electrode layer (12) being transparent.

6. The power-generating display device according to claim 5, wherein the photovoltaic unit (1) and the display unit (2) are adhesively secured by a glue layer (4), the glue layer (4) being located between the photovoltaic unit (1) and the display unit (2);

the light-emitting chip (21) is attached to the surface, away from the light source, of the first conductive material film layer (23);

the side, far away from the display unit (2), of the photovoltaic unit (1) is also provided with a first back plate (3), and the first back plate (3) is transparent or opaque.

7. The power-generating display device according to claim 4, wherein the photovoltaic unit (1) is provided with a through hole (14) penetrating through the photovoltaic unit (1) longitudinally, and an insulating film layer (15), a second conductive material film layer (16), a light-emitting chip (21) and an encapsulation layer (17) are arranged in the through hole (14) from the side of the display front plate (22);

the light-emitting chip (21) is attached to the surface, away from the light source, of the second conductive material film layer (16); the insulating film layer (15) and the second conductive material film layer (16) are transparent; the packaging layer (17) is transparent or opaque;

the side, far away from the display unit (2), of the photovoltaic unit (1) is also provided with a second back plate (5), and the second back plate (5) is transparent or opaque.

8. The power generable display device according to claim 2, characterized in that the photovoltaic unit (1) is a solar cell sheet, within which the solar energy absorbing layer (11) is located.

9. The power generable display device according to claim 3, characterized in that the photovoltaic unit (1) is a solar cell sheet, within which the solar energy absorbing layer (11) is located.

10. The power-generating display device according to claim 9, wherein the photovoltaic unit (1) and the display unit (2) are bonded and fixed by an adhesive film layer (4), the solar cell pieces are connected in series to form a solar cell string, and the solar cell string is fixed in the adhesive film layer (4);

the light-emitting chip (21) is attached to the surface, away from the light source, of the first conductive material film layer (23);

the side, far away from the display unit (2), of the photovoltaic unit (1) is also provided with a second back plate (5), and the second back plate (5) is transparent or opaque.

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