Display apparatus and manufacturing method therefor

Patent metadata

Field	Value
Publication number	US-2025098506-A1
Application number	US-202218291934-A
Country	US
Kind code	A1
Filing date	Jul 4, 2022
Priority date	Jul 28, 2021
Publication date	Mar 20, 2025
Grant date	—

Abstract

A display apparatus, including: a display panel; a supporting layer, provided on a backlight side of the display panel; a circuit board, provided on a side of the supporting layer away from the display panel; and a shielding layer, overlaid on a side of the circuit board away from the display panel and including a first insulation layer and a conductive layer. The conductive layer includes a shielding portion and a leading-out portion; the first insulation layer exposes at least partial region of the leading-out portion; an orthographic projection of the shielding portion on the display panel is located within an orthographic projection of the circuit board on the display panel; an orthographic projection of the leading-out portion on the display panel is located outside the orthographic projection of the circuit board on the display panel; the leading-out portion is electrically connected to the supporting layer.

First claim

1 . A display apparatus, comprising:
a display panel; a supporting layer, provided on a backlight side of the display panel, wherein the supporting layer is made of a conductive material; a circuit board, provided on a side of the supporting layer away from the display panel and electrically connected to the display panel; and a shielding layer, overlaid on a side of the circuit board away from the display panel and comprising a first insulation layer and a conductive layer that are distributed along a direction away from the display panel; wherein the conductive layer comprises a shielding portion and a leading-out portion that are electrically connected to each other, and the first insulation layer exposes at least partial region of the leading-out portion; an orthographic projection of the shielding portion on the display panel is located within an orthographic projection of the circuit board on the display panel, an orthographic projection of the leading-out portion on the display panel is located outside the orthographic projection of the circuit board on the display panel, and the leading-out portion is electrically connected to the supporting layer.

2 . The display apparatus according to claim 1 , wherein an orthographic projection of the first insulation layer on the display panel is located within the orthographic projection of the circuit board on the display panel; and
the orthographic projection of the leading-out portion on the display panel is located outside the orthographic projection of the first insulation layer on the display panel.

3 . The display apparatus according to claim 1 , wherein the circuit board comprises:
a substrate; a circuit layer, provided on a side of the substrate close to the display panel; wherein, the circuit layer is provided with an electrostatic export portion, and an orthographic projection of the electrostatic export portion on the display panel at least partially overlaps with an orthographic projection of the supporting layer on the display panel; and a protecting layer, covering the circuit layer and exposing the electrostatic export portion; wherein the electrostatic export portion is electrically connected to the supporting layer.

4 . The display apparatus according to claim 1 , wherein a material of the conductive layer comprises at least one of a conductive adhesive or a conductive fabric.

5 . The display apparatus according to claim 1 , wherein the shielding layer further comprises:
a second insulation layer, provided on a surface of the conductive layer away from the display panel and covering the shielding portion and the leading-out portion.

6 . The display apparatus according to claim 1 , wherein the shielding layer further comprises:
a wave-absorbing layer, provided between the conductive layer and the first insulation layer; wherein an orthographic projection of the wave-absorbing layer on the display panel is located within an orthographic projection of the first insulation layer on the display panel, and a material of the wave-absorbing layer comprises a wave-absorbing material capable of absorbing an electromagnetic wave.

7 . The display apparatus according to claim 6 , wherein the wave-absorbing material comprises graphite.

8 . The display apparatus according to claim 6 , wherein the shielding layer further comprises:
a heat dissipation layer, provided between the wave-absorbing layer and the conductive layer, wherein an orthographic projection of the heat dissipation layer on the display panel is located within the orthographic projection of the first insulation layer on the display panel.

9 . The display apparatus according to claim 8 , wherein a material of the heat dissipation layer comprises copper.

10 . The display apparatus according to claim 2 , wherein the display panel is provided with a display region and a peripheral region located outside the display region; the display panel comprises a driving back plate and a light-emitting layer located on a side of the driving back plate, and the light-emitting layer is located in the display region;
the display apparatus further comprises: a flexible connection circuit board, wherein an end of the flexible connection circuit board is stacked on a region, located in the peripheral region, of a surface of the driving back plate close to the light-emitting layer, and is electrically connected with the driving back plate; and another end of the flexible connection circuit board is bent to a side of the supporting layer away from the circuit board, and electrically connected with the circuit board.

11 . The display apparatus according to claim 10 , wherein a distance between the leading-out portion and the supporting layer is smaller than a distance between the shielding portion and the supporting layer.

12 . The display apparatus according to claim 11 , wherein the conductive layer located at the leading-out portion is directly attached to the supporting layer.

13 . A method for manufacturing a display apparatus, comprising:
forming a display panel, a circuit board, and a shielding layer; wherein, the shielding layer comprises a first insulation layer and a conductive layer located on a side of the first insulation layer; the conductive layer comprises a shielding portion and a leading-out portion that are electrically connected to each other, and the first insulation layer exposes at least partial region of the leading-out portion; forming a supporting layer on a backlight side of the display panel; electrically connecting the circuit board to the display panel, and providing the circuit board on the backlight side of the display panel; overlaying the shielding layer on a side of the circuit board away from the display panel, so that the first insulation layer and the conductive layer are distributed along a direction away from the display panel; wherein an orthographic projection of the shielding portion on the display panel is located within an orthographic projection of the circuit board on the display panel, and an orthographic projection of the leading-out portion on the display panel is located outside the orthographic projection of the circuit board on the display panel; and electrically connecting the leading-out portion to the supporting layer.

14 . The display apparatus according to claim 2 , wherein the shielding layer further comprises:
a second insulation layer, provided on a surface of the conductive layer away from the display panel and covering the shielding portion and the leading-out portion.

15 . The display apparatus according to claim 3 , wherein the shielding layer further comprises:
a second insulation layer, provided on a surface of the conductive layer away from the display panel and covering the shielding portion and the leading-out portion.

16 . The display apparatus according to claim 4 , wherein the shielding layer further comprises:
a second insulation layer, provided on a surface of the conductive layer away from the display panel and covering the shielding portion and the leading-out portion.

17 . The display apparatus according to claim 2 , wherein the shielding layer further comprises:
a wave-absorbing layer, provided between the conductive layer and the first insulation layer; wherein an orthographic projection of the wave-absorbing layer on the display panel is located within an orthographic projection of the first insulation layer on the display panel, and a material of the wave-absorbing layer comprises a wave-absorbing material capable of absorbing an electromagnetic wave.

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd

Inventors

• Liu Chang
• Wang Jiaxiang
• Lin Xinqi
• Yang Jie
• Li Yaqi
• Feng Binfeng
• Wang Yanli

Classifications

• H10W42/20

  protecting against electromagnetic or particle radiation, e.g. light, X-rays, gamma-rays or electrons · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K59/126 Primary

  Shielding, e.g. light-blocking means over the TFTs · CPC title

• H10K59/95

  wherein all light-emitting elements are organic, e.g. assembled OLED displays · CPC title

• H10K59/8794 Primary

  Arrangements for heating and cooling · CPC title