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US-12622098-B2 - Display backplane and mobile terminal

US12622098B2US 12622098 B2US12622098 B2US 12622098B2US-12622098-B2

Abstract

Disclosed is a display backplane and a mobile terminal. The display backplane includes a substrate, a light-emitting layer, and a protective layer. The light-emitting layer is disposed on the substrate, and the protective layer is disposed on the substrate. An accommodating groove is disposed on a surface of the protective layer facing the substrate, and the light-emitting unit is located in the accommodating groove.

Inventors

  • YUHUA ZENG

Assignees

  • Guangzhou China Star Optoelectronics Semiconductor Display Technology Co., Ltd.

Dates

Publication Date
20260505
Application Date
20220315
Priority Date
20220228

Claims (20)

  1. 1 . A display backplane, comprising: a substrate; a light-emitting layer disposed on the substrate and including a plurality of light-emitting units arranged at intervals; a protective layer disposed on the substrate, wherein a plurality of accommodating grooves are disposed in a surface of the protective layer facing the substrate, and a reflective microstructure disposed on the substrate and surrounding a periphery of the light-emitting units, wherein the light-emitting units and the reflective microstructure are both located in the accommodating grooves of the protective layer, the protective layer covers the light-emitting units and the reflective microstructure, and the reflective microstructure comprises a plurality of protrusions, and the display backplane comprises a semi-transparent layer disposed on a surface of the protective layer away from the substrate, the semi-transparent layer comprises a plurality of sub-semi-transparent layers, each of the sub-semi-transparent layers covers corresponding one of the light-emitting units, and an ink density of the sub-semi-transparent layers at the center among the plurality of sub-semi-transparent layers is the highest and decreases gradually toward the sub-semi-transparent layers at the edges among the plurality of sub-semi-transparent layers.
  2. 2 . The display backplane of claim 1 , wherein the plurality of protrusions have a diameter in a range of 3 μm-16 μm.
  3. 3 . The display backplane of claim 1 , wherein an orthographic projection of the semi-transparent layer on the substrate covers an orthographic projection of the light-emitting layer on the substrate.
  4. 4 . The display backplane of claim 3 , wherein an orthographic projection of the sub-semi-transparent layer on the substrate covers an orthographic projection of the corresponding light-emitting unit on the substrate.
  5. 5 . The display backplane of claim 3 , wherein the protective layer is provided with a scattering layer to cover the protective layer and the semi-transparent layer.
  6. 6 . The display backplane of claim 1 , wherein an adhesive layer is disposed between the protective layer and the substrate, and the adhesive layer securely adheres to the protective layer and the substrate.
  7. 7 . The display backplane of claim 6 , wherein the adhesive layer is disposed around the light-emitting layer.
  8. 8 . The display backplane of claim 1 , wherein at least one of the light-emitting units is disposed in one of the accommodating grooves.
  9. 9 . The display backplane of claim 1 , wherein a depth of each of the accommodating grooves is greater than a height of the light-emitting layer in a direction perpendicular to the substrate.
  10. 10 . A mobile terminal comprising a display backplane and a terminal body, the terminal body being integrated with the display backplane; wherein the display backplane comprises: a substrate; a light-emitting layer disposed on the substrate and including a plurality of light-emitting units arranged at intervals; a protective layer disposed on the substrate, wherein a plurality of accommodating grooves are disposed in a surface of the protective layer facing the substrate, and a reflective microstructure disposed on the substrate and surrounding a periphery of the light-emitting units, wherein the light-emitting units and the reflective microstructure are both located in the accommodating grooves, the protective layer covers the light-emitting units and the reflective microstructure, and the reflective microstructure comprises a plurality of protrusions, and the display backplane comprises a semi-transparent layer disposed on a surface of the protective layer away from the substrate, the semi-transparent layer comprises a plurality of sub-semi-transparent layers, each of the sub-semi-transparent layers covers corresponding one of the light-emitting units, and an ink density of the sub-semi-transparent layers at the center among the plurality of sub-semi-transparent layers is the highest and decreases gradually toward the sub-semi-transparent layers at the edges among the plurality of sub-semi-transparent layers.
  11. 11 . The mobile terminal of claim 10 , wherein the plurality of protrusions have a diameter in a range of 3 μm-16 μm.
  12. 12 . The mobile terminal of claim 10 , wherein an orthographic projection of the semi-transparent layer on the substrate covers an orthographic projection of the light-emitting layer on the substrate.
  13. 13 . The mobile terminal of claim 12 , wherein an orthographic projection of the sub-semi-transparent layer on the substrate covers an orthographic projection of the corresponding light-emitting unit on the substrate.
  14. 14 . The mobile terminal of claim 12 , wherein the protective layer is provided with a scattering layer to cover the protective layer and the semi-transparent layer.
  15. 15 . The mobile terminal of claim 10 , wherein an adhesive layer is disposed between the protective layer and the substrate, and the adhesive layer securely adheres to the protective layer and the substrate.
  16. 16 . The mobile terminal of claim 15 , wherein the adhesive layer is disposed around the light-emitting layer.
  17. 17 . The mobile terminal of claim 10 , wherein at least one of the light-emitting units is disposed in one of the accommodating grooves.
  18. 18 . The mobile terminal of claim 10 , wherein a depth of each of the accommodating grooves is greater than a height of the light-emitting layer in a direction perpendicular to the substrate.
  19. 19 . The display backplane of claim 1 , wherein a surface of the protective layer away from the substrate is a planar structure, and is disposed over an entire surface of the substrate.
  20. 20 . The display backplane of claim 2 , wherein a height of the protrusions is less than a height of the light-emitting units, and the reflective microstructure completely covers the substrate within each of the accommodating grooves.

Description

TECHNICAL FIELD The present application relates to the field of display, and in particular, to a display backplane and a mobile terminal. BACKGROUND At present, a mini light-emitting diode (Mini LED) chip has a size ranging from 50 to 200 microns, and its contact area with a pad is small, resulting in low soldering adhesion to the chip. Therefore, it is necessary to package the Mini LED chip to prevent the chip from falling off due to external force. A Mini LED display screen is prone to cause problems that lamp beads are lit at an undesired location or failed in certain positions in the course of use. In this case, the display screen needs to be return to the factory for replacement of a lamp board. In a conventional Mini LED chip packaging mode, a Mini LED substrate soldered with a chip is covered by a die-bonding glue, the glue is cured into a layer to adhere to the chip. Therefore, when the lamp board is required to return to the factory for replacement, it is impossible to replace a single chip if a chip is bad or failed, and it is necessary to replace the entire lamp board, making maintenance costs high and resource waste serious. TECHNICAL PROBLEMS An embodiment of the present application provides a dimming layer for a display module and the display module to solve technical problems that lamp beads are lit at an undesired location or failed in certain positions during use of a current Mini LED display screen and a single chip cannot be replaced after being defective or failed and thus needs to be returned to a factory for replacement of a whole lamp board, thereby achieving low maintenance cost and decreasing waste of resources. TECHNICAL SOLUTIONS To solve the above problems, the present application provides the following technical solutions. An embodiment of the present application provides a display backplane, comprising: a substrate;a light-emitting layer disposed on the substrate and including a plurality of light-emitting units arranged at intervals; anda protective layer disposed on the substrate, wherein an accommodating groove is disposed on a surface of the protective layer facing the substrate, and the light-emitting unit is located in the accommodating groove. In an embodiment, the display backplane includes a reflective microstructure surrounding a periphery of the light-emitting unit and located within the accommodating groove. In an embodiment, the reflective microstructure includes a plurality of protrusions having a diameter in the range of 3 μm-16 μm. In an embodiment, the display backplane includes a semi-transparent layer disposed on a surface of the protective layer away from the substrate, and an orthographic projection of the semi-transparent layer on the substrate covers an orthographic projection of the light-emitting layer on the substrate. In an embodiment, the semi-transparent layer includes a plurality of sub-semi-transparent layers, one of the sub-semi-transparent layers corresponds to one of the light-emitting units, and an orthographic projection of the sub-semi-transparent layer on the substrate covers an orthographic projection of the corresponding light-emitting unit on the substrate. In an embodiment, the protective layer is provided with a scattering layer covering the protective layer and the semi-transparent layer. In an embodiment, an adhesive layer is disposed between the protective layer and the substrate, and the adhesive layer securely adheres the protective layer and the substrate. In an embodiment, the adhesive layer is disposed around the light-emitting layer. In an embodiment, at least one of the light-emitting units is disposed in one of the accommodating grooves. In an embodiment, a depth of the accommodating groove is greater than a height of the light-emitting layer in a direction perpendicular to the substrate. In addition, the present application further provides a mobile terminal comprising a display backplane and a terminal body, the terminal body being integrated with the display backplane. The display backplane includes: a substrate;a light-emitting layer disposed on the substrate and including a plurality of light-emitting units arranged at intervals; anda protective layer disposed on the substrate, wherein an accommodating groove is disposed on a surface of the protective layer facing the substrate, and the light-emitting unit is located in the accommodating groove. In an embodiment, the display backplane includes a reflective microstructure surrounding a periphery of the light-emitting unit and located within the accommodating groove. In an embodiment, the reflective microstructure includes a plurality of protrusions having a diameter in a range of 3 μm-16 μm. In an embodiment, the display backplane includes a semi-transparent layer disposed on a surface of the protective layer away from the substrate, and an orthographic projection of the semi-transparent layer on the substrate covers an orthographic projection of the light-emitting layer