CN108550613B

CN108550613B - Display module

Info

Publication number: CN108550613B
Application number: CN201810538987.0A
Authority: CN
Inventors: 杨振恢; 吴苏; 李志成; 李建华
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2018-05-30
Filing date: 2018-05-30
Publication date: 2020-12-18
Anticipated expiration: 2038-05-30
Also published as: CN108550613A

Abstract

The invention discloses a display module, wherein a solar cell layer is arranged in a non-display area between a second electrode and a first transparent substrate, the solar cell layer can absorb part of external light and generate current, and then the electric energy generated by the solar cell layer is stored by a rechargeable battery, so that the cruising ability of the rechargeable battery is greatly improved, and the energy consumption of the display module is equivalently reduced.

Description

Display module

Technical Field

The invention relates to the field of image display, in particular to a display module.

Background

Along with the function of display module assembly is powerful increasingly, the user is also higher and higher to the requirement of display module assembly simultaneously.

As an emerging OLED (Organic Light-Emitting Diode) display module, it is well known and used. The OLED display module has the advantages of self-luminescence, wide viewing angle, almost infinite contrast, extremely high reaction speed and the like. The OLED display module is divided into a PMOLED (passive-driven OLED) display module and an AMOLED (active-driven OLED) display module at the present stage. The AMOLED display module is usually driven by a Thin Film Transistor (TFT) to display a specific light spot on each pixel of the AMOLED, so as to finally display an image on the surface of the AMOLED display module.

However, as the technology of the display module is continuously improved, the problem of energy consumption of the display module is always a concern of people. Therefore, how to reduce the power consumption of the display module is always an urgent problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a display module which can effectively reduce the energy consumption of the display module.

In order to solve the above technical problems, the present invention provides a display module, which includes a first transparent substrate, a transparent buffer layer, a first transparent electrode, a light emitting layer, a second electrode, a TFT layer, and a second substrate;

the first transparent electrode is positioned above the second electrode, and the light-emitting layer is arranged between the first transparent electrode and the second electrode; the first transparent substrate is positioned above the first transparent electrode and is connected with the first transparent electrode through the transparent buffer layer; the second substrate is positioned below the second electrode, and the TFT layer is arranged between the second substrate and the second electrode;

and a solar cell layer is arranged in a non-display area between the second electrode and the first transparent substrate, and the solar cell layer is electrically connected with the conductive circuit layer so as to charge the rechargeable battery through the conductive circuit layer.

Optionally, a groove is formed in a non-display area on the lower surface of the light emitting layer, the groove penetrates through the light emitting layer and the first transparent electrode to reach the transparent buffer area, and the solar cell layer is arranged in the groove.

Optionally, a voltage stabilizing circuit for stabilizing the output voltage of the solar cell layer is arranged in the conductive circuit layer.

Optionally, a current limiting circuit for limiting the magnitude of the output current of the solar cell layer is arranged in the conductive circuit layer.

Optionally, the solar cell layer includes an N-type doped layer and a P-type doped layer; the P-type doping layer faces the first transparent substrate, the N-type doping layer faces the second electrode, a first grid line is arranged on the surface of the P-type doping layer, a second grid line is arranged on the surface of the N-type doping layer, and the first grid line and the second grid line are both connected with the conducting circuit layer.

Optionally, the solar cell layer includes an N-type doped layer and a P-type doped layer; the N-type doping layer faces the first transparent substrate, the P-type doping layer faces the second electrode, a first grid line is arranged on the surface of the N-type doping layer, a second grid line is arranged on the surface of the P-type doping layer, and the first grid line and the second grid line are both connected with the conducting circuit layer.

Optionally, the first gate line includes a plurality of segments of sub-gate lines, the plurality of segments of sub-gate lines are distributed along a straight line, and adjacent sub-gate lines are electrically connected through an electrical connection line.

Optionally, the display module further includes a color filter layer, and the color filter layer is disposed between the first transparent substrate and the first transparent electrode and covers the display area.

Optionally, the first transparent electrode is a transparent cathode, and the corresponding second electrode is a metal anode.

Optionally, a signal channel is arranged on the surface of the TFT layer, and the signal channel is used for detecting operation gesture information of a user.

According to the display module provided by the invention, the solar cell layer is arranged in the non-display area between the second electrode and the first transparent substrate, the solar cell layer can absorb part of external light and generate current, and further the electric energy generated by the solar cell layer is stored through the rechargeable battery, so that the cruising ability of the rechargeable battery is greatly improved, and the energy consumption of the display module is equivalently reduced.

Drawings

In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a display module according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a specific solar cell layer according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another specific solar cell layer according to an embodiment of the present invention.

In the figure: 10. the solar cell comprises a first transparent electrode, a second electrode, a light emitting layer, a first transparent substrate, a transparent buffer layer, a second substrate, a TFT layer, a signal channel, a solar cell layer, a 61. P-type doped layer, an N-type doped layer, a signal channel, a.

Detailed Description

The core of the invention is to provide a display module. For the existing display module, the problem of energy consumption of products is always a concern of people. In the display module provided by the invention, the solar cell layer is arranged in the non-display area between the second electrode and the first transparent substrate, the solar cell layer can absorb part of external light and generate current, and further the electric energy generated by the solar cell layer is stored by the rechargeable battery, so that the cruising ability of the rechargeable battery is greatly improved, and the energy consumption of the display module is equivalently reduced.

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a display module according to an embodiment of the present invention.

Referring to fig. 1, in the embodiment of the present invention, the display module includes a first transparent substrate 40, a transparent buffer layer 41, a first transparent electrode 10, a light emitting layer 30, a second electrode 20, a TFT layer 51, and a second substrate 50; the first transparent electrode 10 is located above the second electrode 20, and the light emitting layer 30 is disposed between the first transparent electrode 10 and the second electrode 20; the first transparent substrate 40 is positioned above the first transparent electrode 10, and the first transparent substrate 40 is connected with the first transparent electrode 10 through the transparent buffer layer 41; the second substrate 50 is located below the second electrode 20, and the TFT layer 51 is disposed between the second substrate 50 and the second electrode 20.

In the embodiment of the present invention, the light emitting layer 30 is a member mainly for generating light, and the light emitting layer 30 is disposed between the first transparent electrode 10 and the second electrode 20. In the operating state, the first transparent electrode 10 and the second transparent electrode 20 emit electrons and holes, respectively, which are transmitted to the light emitting layer 30 to be coupled and emit light. The light emitting layer 30 may be made of Alq, Balq, DPVBi, or the like. Among them, Alq is widely used for green light, Balq is widely used for red light, and DPVBi is widely used for blue light. Of course, other materials may be used to form the light emitting layer 30 in the embodiment of the present invention, and the specific components of the light emitting layer 30 are not particularly limited in the embodiment of the present invention.

For the AMOLED, since only one side thereof is used to display an image, in the embodiment of the present invention, the members located at the light emitting layer 30 side are all required to be transparent members; while the component on the other side is typically a non-transparent component. Generally, one side of the AMOLED used to display an image is also referred to as a front side, and the other side is generally referred to as a back side. In the embodiment of the invention, the front surface of each part is the upper surface, and the back surface of each corresponding part is the lower surface. In the embodiment of the present invention, the member located on the front surface of the light-emitting layer 30 is generally a transparent member, and the member located on the rear surface of the light-emitting layer 30 is generally a non-transparent member.

In the embodiment of the present invention, the front surface of the light emitting layer 30 is provided with a first transparent electrode 10, the front surface of the first transparent electrode 10 is provided with a first transparent substrate 40, and the first transparent substrate 40 is fixedly connected with the first transparent electrode 10 through a transparent buffer layer 41. The specific material of the transparent buffer layer 41 is not particularly limited in the embodiment of the present invention, as long as the first transparent substrate 40 and the first transparent electrode 10 can be fixedly connected.

The first transparent substrate 40 mainly protects the whole AMOLED, and is usually made of glass. Of course, the specific material of the first transparent substrate 40 is not particularly limited as long as the first transparent substrate 40 can allow light to pass through and has a certain intensity to protect the whole AMOLED.

The second electrode 20 is provided on the back surface of the light-emitting layer 30. The second electrode 20 and the first transparent electrode 10 need to be opposite electrodes. In the embodiment of the present invention, the first transparent electrode 10 is a transparent cathode, and the second electrode 20 is a metal anode. Wherein the transparent cathode emits electrons to flow into the light-emitting layer 30 and the metal anode emits holes to flow into the light-emitting layer 30. When the second electrode 20 is a non-transparent electrode, the light propagating in the light-emitting layer 30 toward the back surface is totally reflected to the front surface of the AMOLED, thereby increasing the brightness of the AMOLED provided by the embodiment of the invention.

The second substrate 50 is provided on the back surface of the second electrode 20, and the TFT layer 51, i.e., the thin film transistor, is provided between the second substrate 50 and the second electrode 20, and the TFT layer 51 is usually provided on the surface of the second substrate 50 facing the light-emitting layer 30. The thin film transistor is also called a field effect transistor, and a plurality of different thin films, such as a semiconductor active layer, a dielectric layer, a metal electrode layer, etc., are typically deposited on the surface of the second substrate 50. A corresponding charge storage capacitor is disposed in the TFT layer 51 corresponding to each pixel point in the AMOLED, and external driving can control each pixel point in the light emitting layer 30 to operate by controlling the TFT layer 51, so as to generate a corresponding image. Since the AMOLED drives the light emitting layer 30 to generate light by means of current, in the embodiment of the present invention, the TFT layer 51 generally needs to have a driving function in addition to the address function to drive the light emitting layer 30 to emit light.

The second substrate 50 may be a glass substrate or a substrate made of other materials, and the specific material of the second substrate 50 is not particularly limited in the embodiment of the present invention.

In the embodiment of the present invention, a solar cell layer 60 is disposed in the non-display region between the second electrode 20 and the first transparent substrate 40, and the solar cell layer 60 is electrically connected to the conductive circuit layer 70 to charge the rechargeable battery through the conductive circuit layer 70.

The AMOLED provided by the embodiment of the invention is generally divided into a display area and a non-display area. The display area is mainly used for displaying images, and the non-display area is mainly used for arranging auxiliary devices such as a driving or flexible circuit board. Since the solar cell layer 60 is generally non-transparent and blocks the transmission of light, in the embodiment of the invention, the solar cell layer 60 is disposed in the non-display region between the second electrode 20 and the first transparent substrate 40.

The solar cell layer 60 may convert light energy into electric energy. In general, the solar cell layer 60 generally includes an N-type doped layer 62 and a P-type doped layer 61, and a depletion layer, i.e., a PN junction, is formed between the N-type doped layer 62 and the P-type doped layer 61. The concentration of free electrons in the N-type doped layer 62 is much greater than the concentration of holes, i.e., the N-type doped layer 62 is negatively charged; the concentration of holes in the P-doped layer 61 is much greater than the concentration of free electrons, i.e., the P-doped layer 61 is positively charged. An uncharged depletion layer is formed on the surface of the N-type doped layer 62, which is in contact with the P-type doped layer 61, and meanwhile, a large number of holes are enriched on the surface of the depletion layer, which is located on the N-type doped layer 62, and correspondingly, a large number of electrons are enriched on the surface of the depletion layer, which is located on the P-type doped layer 61, and the holes and the electrons respectively enriched on the two surfaces of the depletion layer form a built-in electric field, which can move the electrons generated by the solar cell layer 60 to the N-type doped layer 62, and meanwhile, the holes generated by the solar cell can be moved to the P-type doped layer 61 by the built-in electric field, i.e., electron-hole pairs generated by the solar cell.

The detailed structure of the solar cell layer 60 will be described in detail in the following embodiments of the invention, and will not be described herein. In the embodiment of the present invention, the solar cell layer 60 may obtain external light, and convert the light into current, and finally the solar cell layer 60 may charge the generated electric energy into the rechargeable battery through the conductive circuit layer 70.

For the solar cell layer 60 in the embodiment of the present invention, since the solar cell layer 60 is equivalent to a cell capable of discharging, and the solar cell layer 60 is connected to a rechargeable cell, the rechargeable cell may perform a reverse charging on the solar cell layer 60, that is, a current in the rechargeable cell may flow into the solar cell layer 60, thereby damaging the solar cell layer 60. In the embodiment of the present invention, it is usually necessary to add a protection circuit to the solar cell layer 60 to prevent the rechargeable battery from reversely charging the solar cell layer 60. The conductive circuit layer 70 provided in the embodiment of the present invention can function as a protection circuit to prevent the rechargeable battery from reversely charging the solar cell layer 60. In order to facilitate the connection between the solar cell layer 60 and the conductive circuit layer 70, in the embodiment of the invention, the solar cell layer 60 is preferably disposed in the non-display region of the AMOLED, in which case the solar cell layer 60 may be directly connected to the conductive circuit layer 70, and the conductive circuit layer 70 may charge the current generated by the solar cell layer 60 into the rechargeable battery.

Of course, the conductive trace layer 70 may have other functions besides the function of protecting the circuit, and details will be described in the following embodiments of the invention and will not be described herein again.

Since the surface of the TFT layer 51 is generally uneven, in the embodiment of the present invention, a groove is formed in the non-display region of the lower surface of the light emitting layer 30, and the groove passes through the light emitting layer 30 and the first transparent electrode 10 to the transparent buffer region. The grooves can effectively compensate the roughness of the surface of the TFT layer 51, so that the flatness of the upper surface of the AMOLED provided by the embodiment of the invention is higher. In the embodiment of the present invention, the solar cell layer 60 may be disposed in the groove. The solar cell layer 60 is arranged in the groove, so that the solar cell layer 60 is as close to the first transparent substrate 40 as possible while the flatness of the whole AMOLED surface is not affected as much as possible, and therefore the solar cell layer 60 can absorb more external light conveniently. Of course, the solar cell layer 60 is disposed in the groove in the non-display region of the entire AMOLED.

In the embodiment of the invention, the light emitting layer 30 may emit white light, and the color filter layer 80 is required to be disposed in the AMOLED. The color filter layer 80 is generally disposed between the first transparent substrate 40 and the first transparent electrode 10, and covers a display area.

The color filter layer 80 is usually disposed between the first transparent substrate 40 and the first transparent electrode 10, and is usually covered by the transparent buffer layer 41. The color filter layer 80 needs to cover the display area of the AMOLED to generate a color image.

The color filter layer 80 can filter the white light into three primary colors of light, and then combine the three primary colors of light to obtain a color image. In general, a plurality of pixels are usually disposed on the surface of the color filter layer 80, and the plurality of pixels are uniformly distributed on the surface of the color filter layer 80. The pixel points are used for filtering out light rays with corresponding colors, so that colored images are formed.

The pixel points usually include a red sub-pixel point, a green sub-pixel point and a blue sub-pixel point. In general, a red sub-pixel, a green sub-pixel and a blue sub-pixel constitute a pixel. And a plurality of pixel points formed by sub-pixel points are uniformly distributed on the surface of the whole color filter layer 80.

Further, in the embodiment of the present invention, a signal channel 52 may be disposed on a surface of the TFT layer 51, where the signal channel 52 is used to detect operation gesture information of a user.

The signal channel 52 may be used to detect operation gesture information of a user, and may implement a function of a touch screen. The signal paths 52 generally include a transmit signal path and a receive signal path, wherein the transmit signal path is a TX signal path and the receive signal path is an RX signal path. In general, a plurality of reception signal channels and a plurality of transmission signal channels are provided on the upper surface of the TFT layer 51, and the transmission signal channels intersect with the reception signal channels. The function of the capacitive touch screen can be integrated into the AMOLED through the signal channel 52, so that the AMOLED has the function of a touch screen.

According to the display module provided by the embodiment of the invention, the solar cell layer 60 is arranged in the non-display area between the second electrode 20 and the first transparent substrate 40, the solar cell layer 60 can absorb a part of external light and generate current, and further the electric energy generated by the solar cell layer 60 is stored by the rechargeable battery, so that the cruising ability of the rechargeable battery is greatly increased, and the energy consumption of the display module is equivalently reduced.

Details of the conductive circuit layer 70 and the solar cell layer 60 provided in the embodiments of the present invention will be described in detail in the following embodiments of the present invention.

Referring to fig. 2 and fig. 3, fig. 2 is a schematic structural diagram of a specific solar cell layer according to an embodiment of the invention; fig. 3 is a schematic structural diagram of another specific solar cell layer according to an embodiment of the present invention.

In distinction from the above-described embodiments, the embodiments of the present invention describe in detail the functions of the conductive circuit layer 70 and the specific structure of the solar cell layer 60 on the basis of the above-described embodiments of the present invention. The rest of the contents are described in detail in the above embodiments of the present invention, and will not be described herein again.

In the embodiment of the present invention, the conductive trace layer 70 may also perform an overcharge protection and an overdischarge protection on the rechargeable battery, so as to ensure that the rechargeable battery does not suddenly receive a voltage or a current exceeding a preset value, thereby prolonging the service life of the rechargeable battery. Specifically, a voltage stabilizing circuit for stabilizing the output voltage of the solar cell layer 60 is disposed in the conductive circuit layer 70, and a current limiting circuit for limiting the output current of the solar cell layer 60 is disposed in the conductive circuit layer 70.

The voltage stabilizing circuit and the current limiting circuit can ensure that the rechargeable battery cannot be impacted and influenced by unstable voltage and unstable current, thereby greatly prolonging the service life of the rechargeable battery. That is, the conductive circuit layer 70 can filter and shape the current output from the solar cell layer 60 to improve the service life of the rechargeable battery.

In the embodiment of the present invention, two structures of the solar cell layer 60 are provided. The first method comprises the following steps: referring to fig. 2, the solar cell layer 60 includes an N-type doped layer 62 and a P-type doped layer 61; the P-type doped layer 61 faces the first transparent substrate 40, the N-type doped layer 62 faces the second electrode 20, a first gate line 63 is disposed on the surface of the P-type doped layer 61, a second gate line 64 is disposed on the surface of the N-type doped layer 62, and both the first gate line 63 and the second gate line 64 are connected to the conductive circuit layer 70. External light is irradiated to the P-type doped layer 61 through the first transparent substrate 40, and a hole-electron pair is formed in the P-type doped layer 61. Under the built-in electric field, electrons move to the N-doped layer 62 and holes remain in the P-doped layer 61. The first gate line 63 disposed on the surface of the P-type doped layer 61 and the second gate line 64 disposed on the surface of the N-type doped layer 62 function to collect and transmit current. The first gate line 63 on the surface of the P-type doped layer 61 may also be referred to as a positive electrode; the second gate line 64 on the surface of the N-type doped layer 62 may also be referred to as a negative electrode. In the embodiment of the present invention, the first gate line 63 and the second gate line 64 are connected to the conductive circuit layer 70 for charging the rechargeable battery.

And the second method comprises the following steps: referring to fig. 3, the solar cell layer 60 includes an N-type doped layer 62 and a P-type doped layer 61; the N-type doped layer 62 faces the first transparent substrate 40, the P-type doped layer 61 faces the second electrode 20, a first gate line 63 is disposed on a surface of the N-type doped layer 62, a second gate line 64 is disposed on a surface of the P-type doped layer 61, and both the first gate line 63 and the second gate line 64 are connected to the conductive circuit layer 70. External light is irradiated to the N-type doped layer 62 through the first transparent substrate 40, and a hole-electron pair is formed in the N-type doped layer 62. Under the built-in electric field, electrons remain in the N-doped layer 62 and holes move to the P-doped layer 61. The first gate line 63 disposed on the surface of the N-type doped layer 62 and the second gate line 64 disposed on the surface of the P-type doped layer 61 function to collect and transmit current. The first gate line 6353 on the surface of the N-type doped layer 62 may also be referred to as a negative electrode; the second gate line 64 on the surface of the P-type doped layer 61 may also be referred to as a positive electrode. In the embodiment of the present invention, the first gate line 63 and the second gate line 64 are connected to the conductive circuit layer 70 for charging the rechargeable battery.

In order to improve the conversion efficiency of the solar cell layer 60 as much as possible, the N-type doped layer 62 and the P-type doped layer 61 may be doped with ions in a heavily doped manner, that is, the N-type doped layer 62 may be a heavily doped N-type layer, and the P-type doped layer 61 may be a heavily doped P-type layer. The ion species and doping concentration of the N-type doped layer 62 and the P-type doped layer 61 are not particularly limited in the embodiments of the present invention, as long as the concentration of free electrons in the N-type doped layer 62 can be made higher than the concentration of holes, and the concentration of holes in the P-type doped layer 61 can be made higher than the concentration of free electrons.

The materials of the N-type doped layer 62 and the P-type doped layer 61 may be monocrystalline silicon, polycrystalline silicon, amorphous silicon, GaAs (gallium arsenide), GaAlAs (gallium aluminum arsenide), InP (indium phosphide), CdS (cadmium sulfide), CdTe (cadmium telluride), etc., although other materials may be used for the N-type doped layer 62 and the P-type doped layer 61, and the materials used for the N-type doped layer 62 and the P-type doped layer 61 are not particularly limited in the embodiment of the present invention.

Further, in the embodiment of the present invention, the first gate line 63 may include a plurality of segments of sub-gate lines, the plurality of segments of sub-gate lines are distributed along a straight line, and adjacent sub-gate lines are electrically connected through an electrical connection line. That is, in the embodiment of the present invention, the first gate line 63 may be a split structure, which is equivalent to that the first gate line 63 is formed by a plurality of sub-gate lines distributed along a straight line, and adjacent sub-gate lines are electrically connected to each other through an electrical connection line. Since the width of the first gate line 63 is relatively wide, a large area of the surface of the solar cell layer 60 for receiving light is occupied, and thus, the current generated from the solar cell layer 60 is reduced. The split structure is arranged on the first grid line 63 located on the surface, facing the first transparent substrate 40, of the solar cell layer 60, the area required by the first grid line 63 can be greatly reduced, so that the area, capable of receiving external light rays, of the solar cell layer 60 is increased, the area of the working area of the solar cell layer 60 is increased, and the conversion efficiency of the solar cell layer 60 can be improved. It should be noted that, in the embodiment of the present invention, the width of the electrical connection line connecting the adjacent sub-gate lines needs to be smaller than the width of the sub-gate line.

Of course, similar to the split structure of the first gate line 63, the second gate line 64 may also be designed into a split structure, that is, the second gate line 64 may also include a plurality of segments of sub-gate lines, the plurality of segments of sub-gate lines are distributed along a straight line, and adjacent sub-gate lines are electrically connected through an electrical connection line.

Because the conductive performance of the silver paste is outstanding, the first gate line 63, the second gate line 64, the sub-gate lines and the electrical connection lines are all made of silver paste in the present stage. Of course, the gate lines may be made of other materials, and in the embodiment of the present invention, the materials of the first gate line 63, the second gate line 64, the sub-gate lines, and the electrical connection lines are not particularly limited.

The embodiment of the invention specifically describes the function of the conductive circuit layer 70 and the specific structure of the solar cell layer 60. The life of the rechargeable battery can be improved by providing a voltage stabilizing circuit and a current limiting circuit in the conductive circuit layer 70. By forming the first gate lines 63 into a split structure, the area required by the first gate lines 63 is reduced, and the conversion efficiency of the solar cell layer 60 can be improved.

The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The display module provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A display module is characterized by comprising a first transparent substrate, a transparent buffer layer, a first transparent electrode, a light-emitting layer, a second electrode, a TFT layer and a second substrate;

a solar cell layer is arranged in a non-display area between the second electrode and the first transparent substrate, and the solar cell layer is electrically connected with the conductive circuit layer so as to charge the rechargeable battery through the conductive circuit layer;

a groove is formed in a non-display area on the lower surface of the light emitting layer, the groove penetrates through the light emitting layer and the first transparent electrode to reach the transparent buffer layer, and the solar cell layer is arranged in the groove.

2. The display module according to claim 1, wherein a voltage regulator circuit for stabilizing the output voltage of the solar cell layer is disposed in the conductive circuit layer.

3. The display module according to claim 1, wherein a current limiting circuit for limiting the output current of the solar cell layer is disposed in the conductive circuit layer.

4. The display module of claim 1, wherein the solar cell layer comprises an N-type doped layer and a P-type doped layer; the P-type doping layer faces the first transparent substrate, the N-type doping layer faces the second electrode, a first grid line is arranged on the surface of the P-type doping layer, a second grid line is arranged on the surface of the N-type doping layer, and the first grid line and the second grid line are both connected with the conducting circuit layer.

5. The display module of claim 1, wherein the solar cell layer comprises an N-type doped layer and a P-type doped layer; the N-type doping layer faces the first transparent substrate, the P-type doping layer faces the second electrode, a first grid line is arranged on the surface of the N-type doping layer, a second grid line is arranged on the surface of the P-type doping layer, and the first grid line and the second grid line are both connected with the conducting circuit layer.

6. The display module of claim 5, wherein the first gate line comprises a plurality of segments of sub-gate lines, the plurality of segments of sub-gate lines are distributed along a straight line, and adjacent sub-gate lines are electrically connected through an electrical connection line.

7. The display module according to claim 1, further comprising a color filter layer disposed between the first transparent substrate and the first transparent electrode and covering a display area.

8. The display module of claim 1, wherein the first transparent electrode is a transparent cathode and the corresponding second electrode is a metal anode.

9. The display module according to any one of claims 1 to 8, wherein a signal channel is disposed on a surface of the TFT layer, and the signal channel is used for detecting operation gesture information of a user.