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CN-122002910-A - Photovoltaic cell and manufacturing method thereof, display screen and electronic equipment

CN122002910ACN 122002910 ACN122002910 ACN 122002910ACN-122002910-A

Abstract

The application relates to the technical field of photovoltaic cells, and provides a photovoltaic cell, a manufacturing method thereof, a display screen and electronic equipment, which can solve the problems that in the electronic equipment with photovoltaic cells in the related art, the photovoltaic cells generate less electric energy and are not beneficial to the improvement of the endurance time of the electronic equipment. The photovoltaic cell comprises a bearing substrate and a photovoltaic cell layer arranged on the bearing substrate, wherein the bearing substrate is a transparent substrate and is provided with a central area and an edge area positioned at the periphery of the central area, the photovoltaic cell layer comprises a first photovoltaic cell layer and a second photovoltaic cell layer, the first photovoltaic cell layer is used for receiving light to generate photocurrent, orthographic projection of the first photovoltaic cell layer on the bearing substrate is positioned at the edge area, the second photovoltaic cell layer is a transparent layer and is used for receiving light to generate photocurrent, and orthographic projection of the second photovoltaic cell layer on the bearing substrate is at least partially positioned at the central area. The application can be used in electronic equipment such as intelligent watches.

Inventors

  • SHI DAIXING
  • JIN JUNYE
  • ZHANG JUN

Assignees

  • 华为终端有限公司

Dates

Publication Date
20260508
Application Date
20241104

Claims (20)

  1. 1. The photovoltaic cell piece is used for electronic equipment and is characterized by comprising a bearing substrate (1) and a photovoltaic cell layer (2) arranged on the bearing substrate (1); the bearing substrate (1) is a transparent substrate and is provided with a central area (11) and an edge area (12) positioned at the periphery of the central area (11); the photovoltaic cell layer (2) comprises a first photovoltaic cell layer (21) and a second photovoltaic cell layer (22); The first photovoltaic cell layer (21) is arranged on one side of the bearing substrate (1) and is used for receiving light to generate photocurrent, and the orthographic projection of the first photovoltaic cell layer (21) on the bearing substrate (1) is positioned in the edge region (12); The second photovoltaic cell layer (22) is a transparent layer and is arranged on one side of the bearing substrate (1), the second photovoltaic cell layer (22) is used for receiving light to generate photocurrent, and the orthographic projection of the second photovoltaic cell layer (22) on the bearing substrate (1) is at least partially positioned in the central region (11).
  2. 2. The photovoltaic cell of claim 1, wherein the photovoltaic cell, The first photovoltaic cell layer (21) is arranged in the edge area (12) and surrounds a first arrangement space (210), and the orthographic projection of the first arrangement space (210) on the bearing substrate (1) is positioned in the central area (11); the photovoltaic cell layer (2) further comprises a first insulating layer (23), the first insulating layer (23) is a transparent layer and is arranged in the central area (11), the first insulating layer (23) fills the first setting space (210), and the second photovoltaic cell layer (22) is arranged on one side, far away from the bearing substrate (1), of the first photovoltaic cell layer (21).
  3. 3. The photovoltaic cell of claim 2, wherein the photovoltaic cell, The first photovoltaic cell layer (21) comprises a first conductive layer (211), a first photoelectric conversion layer (212) and a second conductive layer (213) along the direction away from the carrier substrate (1), and the second photovoltaic cell layer (22) comprises a third conductive layer (221), a second photoelectric conversion layer (222) and a fourth conductive layer (223) along the direction away from the carrier substrate (1); The photovoltaic cell layer (2) further comprises a conductive contact layer (24), wherein the conductive contact layer (24) is arranged between the second conductive layer (213) and the third conductive layer (221) and is respectively contacted with the second conductive layer (213) and the third conductive layer (221).
  4. 4. The photovoltaic cell of claim 3 wherein the photovoltaic cell, The conductive contact layer (24) is a transparent layer, and a portion of the conductive contact layer (24) is located between the second conductive layer (213) and the third conductive layer (221), and another portion of the conductive contact layer (24) is located between the first insulating layer (23) and the third conductive layer (221).
  5. 5. The photovoltaic cell of claim 3 wherein the photovoltaic cell, The conductive contact layer (24) encloses a second arrangement space (240), the orthographic projection of the second arrangement space (240) on the carrier substrate (1) is located in the central area (11), and the first insulation layer (23) fills the second arrangement space (240).
  6. 6. The photovoltaic cell of any of claims 3-5, The photovoltaic cell layer (2) is provided with a photovoltaic cell pin group (25), the photovoltaic cell pin group (25) is arranged on one side, far away from the photovoltaic cell layer (2), of the bearing substrate (1), the photovoltaic cell pin group (25) comprises a plurality of photovoltaic cell pins (251), and the first conductive layer (211) and the fourth conductive layer (223) are respectively and electrically connected with the photovoltaic cell pins (251) in a one-to-one correspondence mode through holes (26).
  7. 7. The photovoltaic cell of claim 2, wherein the photovoltaic cell, The photovoltaic cell layer (2) further comprises a second insulating layer (27), the second insulating layer (27) is a transparent layer, a part of the second insulating layer (27) is located between the first insulating layer (23) and the second photovoltaic cell layer (22), and the other part of the second insulating layer (27) is located between the first photovoltaic cell layer (21) and the second photovoltaic cell layer (22) so as to separate the first photovoltaic cell layer (21) from the second photovoltaic cell layer (22).
  8. 8. The photovoltaic cell of claim 7, wherein the photovoltaic cell, The first photovoltaic cell layer (21) comprises a first conductive layer (211), a first photoelectric conversion layer (212) and a second conductive layer (213) along the direction away from the carrier substrate (1), and the second photovoltaic cell layer (22) comprises a third conductive layer (221), a second photoelectric conversion layer (222) and a fourth conductive layer (223) along the direction away from the carrier substrate (1); The photovoltaic cell layer (2) is provided with a photovoltaic cell pin group (25), the photovoltaic cell pin group (25) is arranged on one side, far away from the photovoltaic cell layer (2), of the bearing substrate (1) and is located in the edge area (12), the photovoltaic cell pin group (25) comprises a plurality of photovoltaic cell pins (251), and the first conductive layer (211), the second conductive layer (213), the third conductive layer (221) and the fourth conductive layer (223) are respectively and electrically connected with a plurality of photovoltaic cell pins (251) in a one-to-one correspondence manner through holes (26).
  9. 9. The photovoltaic cell of any of claims 1-8, The second photovoltaic cell layer (22) is configured to receive invisible light to produce a photocurrent.
  10. 10. The photovoltaic cell of any of claims 1 to 9, The first photovoltaic cell layer (21) is connected in series with the second photovoltaic cell layer (22), and the effective area S1 of the first photovoltaic cell layer (21), the current density J1 of the photocurrent generated by the first photovoltaic cell layer (21), the effective area S2 of the second photovoltaic cell layer (22) and the current density J2 of the photocurrent generated by the second photovoltaic cell layer (22) meet the conditions of S1×J1=S2×J2.
  11. 11. The photovoltaic cell of any of claims 1 to 10, The first photovoltaic cell layer (21) comprises a plurality of photovoltaic cells (214) connected together in series, each of the photovoltaic cells (214) being adapted to receive light to generate a photocurrent, respectively.
  12. 12. The photovoltaic cell of any of claims 1-11, The photovoltaic cell further comprises a touch sensing layer (3), wherein the touch sensing layer (3) is arranged on one side, far away from the photovoltaic cell layer (2), of the bearing substrate (1), and at least the touch sensing layer (3) and the bearing substrate (1) form a touch panel.
  13. 13. The photovoltaic cell of claim 12, wherein the photovoltaic cell, The touch sensing layer (3) comprises a sensing layer (31) and a third insulating layer (32) arranged on one side of the sensing layer (31) away from the bearing substrate (1), the photovoltaic cell layer (2) is provided with a photovoltaic cell pin group (25), the touch panel is provided with a touch panel pin group (33), the photovoltaic cell pin group (25) and the touch panel pin group (33) are arranged on the surface of the third insulating layer (32) side by side, and the orthographic projection of the photovoltaic cell pin group (25) and the touch panel pin group (33) on the bearing substrate (1) is positioned in the edge area (12).
  14. 14. A display screen, characterized by comprising a display panel (200) and the photovoltaic cell (100) according to any one of claims 1-13, wherein the photovoltaic cell (100) is arranged on the display side of the display panel (200), and the central area (11) of the photovoltaic cell (100) is the orthographic projection of the display area (203) of the display panel (200) on the carrier substrate (1).
  15. 15. A display screen characterized by comprising a display panel (200) and a photovoltaic cell (100) according to any of claims 6, 8, 13, the display panel (200) being a flexible display panel and comprising a panel body (201) and a folded panel section (202) connected to the panel body (201), the panel body (201) having a display area (203), the photovoltaic cell (100) being arranged on a display side of the panel body (201), the central area (11) of the photovoltaic cell (100) being an orthographic projection of the display area (203) on the carrier substrate (1); The photovoltaic cell panel comprises a panel body (201), a photovoltaic cell pin group (25) and a bonding pad group (204) are arranged at the position, corresponding to the photovoltaic cell pin group (25), of the panel body (201), the bonding pad group (204) is electrically connected with the photovoltaic cell pin group (25), a connecting pin group (205) is arranged at the end part, far away from the panel body (201), of the bent panel section (202), the connecting pin group (205) is used for being connected with a circuit board, and the connecting pin group (205) is electrically connected with the bonding pad group (204) through a wiring (206).
  16. 16. A display screen, comprising: a display panel (200); The photovoltaic cell (100) is arranged on the display side of the display panel (200), and comprises a bearing substrate (1) and a second photovoltaic cell layer (22) arranged on the bearing substrate (1), wherein the bearing substrate (1) is a transparent substrate and is provided with a central area (11) and an edge area (12) positioned on the periphery of the central area (11), the central area (11) is the orthographic projection of a display area (203) of the display panel (200) on the bearing substrate (1), the second photovoltaic cell layer (22) is a transparent layer and is used for receiving invisible light to generate photocurrent, and the orthographic projection of the second photovoltaic cell layer (22) on the bearing substrate (1) is at least partially positioned in the central area (11).
  17. 17. The display screen of claim 16, wherein the display screen is configured to display the display screen, The second photovoltaic cell layer (22) is configured to receive invisible light to produce a photocurrent.
  18. 18. The display screen of claim 16 or 17, wherein the display screen comprises a display screen, The photovoltaic cell (100) further comprises a touch sensing layer (3), the touch sensing layer (3) is arranged on one side, far away from the second photovoltaic cell layer (22), of the bearing substrate (1), and at least the touch sensing layer (3) and the bearing substrate (1) form a touch panel.
  19. 19. An electronic device, characterized by comprising a housing (400), a device battery (800) and the display screen (300) according to any one of claims 14-18, wherein the display screen (300) is mounted on the housing (400), the device battery (800) is disposed in the housing (400), and the device battery (800) is electrically connected with a photovoltaic cell (100) of the display screen (300).
  20. 20. The manufacturing method of the photovoltaic cell is characterized by comprising the following steps of: a first photovoltaic cell layer (21) is arranged on one side of a bearing substrate (1) so that the orthographic projection of the first photovoltaic cell layer (21) on the bearing substrate (1) is positioned at an edge area (12) of the bearing substrate (1), wherein the bearing substrate (1) is a transparent substrate, and the first photovoltaic cell layer (21) is used for receiving light to generate photocurrent; and a second photovoltaic cell layer (22) is arranged on one side of the bearing substrate (1) so that the orthographic projection of the second photovoltaic cell layer (22) on the bearing substrate (1) is at least partially positioned in the central area (11) of the bearing substrate (1), wherein the second photovoltaic cell layer (22) is a transparent layer and is used for receiving light to generate photocurrent.

Description

Photovoltaic cell and manufacturing method thereof, display screen and electronic equipment Technical Field The application relates to the technical field of photovoltaic cells, in particular to a photovoltaic cell, a manufacturing method of the photovoltaic cell, a display screen and electronic equipment. Background At present, electronic devices such as mobile phones and smart watches are widely applied in daily life, people can communicate, entertain, monitor health, pay mobile and the like through the electronic devices, life of people is greatly enriched, convenience of life is improved, however, the size of batteries of the electronic devices is limited, and accordingly endurance time of the electronic devices is not long enough. In order to improve the endurance time of electronic devices, electronic devices with photovoltaic cells are generated, and the electronic devices supplement electric energy for the battery of the electronic device by absorbing external energy (such as solar energy) through the photovoltaic cells so as to increase the endurance time of the electronic device. Among them, how to design the structure and arrangement of photovoltaic cells to maximize the endurance time has become one of the important issues in the industry. Disclosure of Invention The embodiment of the application provides a photovoltaic cell, a manufacturing method thereof, a display screen and electronic equipment, which are used for solving the problems that the photovoltaic cell in the electronic equipment with the photovoltaic cell in the related technology generates less electric energy and is not beneficial to the improvement of the endurance time of the electronic equipment. In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme: In a first aspect, an embodiment of the application provides a photovoltaic cell for an electronic device, which comprises a carrier substrate and a photovoltaic cell layer arranged on the carrier substrate, wherein the carrier substrate is a transparent substrate and is provided with a central area and an edge area positioned at the periphery of the central area, the photovoltaic cell layer comprises a first photovoltaic cell layer and a second photovoltaic cell layer, the first photovoltaic cell layer is arranged on one side of the carrier substrate and is used for receiving light to generate photocurrent, the orthographic projection of the first photovoltaic cell layer on the carrier substrate is positioned at the edge area, the second photovoltaic cell layer is a transparent layer and is arranged on one side of the carrier substrate, the second photovoltaic cell layer is used for receiving light to generate photocurrent, and the orthographic projection of the second photovoltaic cell layer on the carrier substrate is at least partially positioned in the central area. According to the photovoltaic cell, the first photovoltaic cell layer is arranged at the position corresponding to the peripheral area of the display panel, and the second photovoltaic cell layer is arranged at the position corresponding to the display area of the display panel, so that the photovoltaic cell fully utilizes the space of the display side of the display panel, the light receiving area of the photovoltaic cell is favorably improved, the electric energy generated by the photovoltaic cell is increased, and the endurance time of electronic equipment is favorably prolonged. Meanwhile, the second photovoltaic cell layer is arranged to be a transparent layer, so that shielding of the second photovoltaic cell layer to a display area of the display panel can be avoided, and light emitted by the display area can be ensured to penetrate through the second photovoltaic cell layer. In some embodiments of the first aspect, the first photovoltaic cell layer is disposed in the edge region and encloses a first disposition space, an orthographic projection of the first disposition space on the carrier substrate is located in the central region, the photovoltaic cell layer further includes a first insulating layer, the first insulating layer is a transparent layer and is disposed in the central region, the first insulating layer fills the first disposition space, and the second photovoltaic cell layer is disposed on a side of the first photovoltaic cell layer away from the carrier substrate. By the arrangement, absorption of incident non-light by other film layers can be reduced, so that the power generation efficiency of the second photovoltaic cell layer is improved, and the endurance time of the electronic equipment can be improved. The first insulating layer may be a passivation layer such as a silicon nitride layer (SiN layer), a silicon oxide layer (SiO layer), or the like. In some embodiments of the first aspect, the first photovoltaic cell layer includes a first conductive layer, a first photoelectric conversion layer, and a second conductive laye