Display substrate and display device with light transmitting region having hollow part

Patent metadata

Field	Value
Publication number	US-12593570-B2
Application number	US-202318341162-A
Country	US
Kind code	B2
Filing date	Jun 26, 2023
Priority date	Sep 30, 2018
Publication date	Mar 31, 2026
Grant date	Mar 31, 2026

Abstract

The present disclosure provides a display substrate including a display region and a peripheral region surrounding it. The display region includes a light transmitting display region and a normal display region on at least one side thereof. The light transmitting display region includes a plurality of sub-pixel regions. At least one sub-pixel region of the plurality of sub-pixel regions includes a light emitting region and a transparent region. The display substrate includes a base substrate, a display layer on a side of the base substrate and in the normal display region and the light transmitting display region. The display layer includes a plurality of insulating layers. A portion of the display layer in the transparent region has a first hollow part that extends through at least one insulating layer of the plurality of insulating layers. The present disclosure also relates to a display device including the display substrate.

First claim

The invention claimed is:

1 . A display substrate comprising:
a display region; and a peripheral region surrounding the display region, wherein the display region comprises a light transmitting display region and a normal display region on at least one side of the light transmitting display region, the light transmitting display region comprises a plurality of sub-pixel regions, and at least one sub-pixel region of the plurality of sub-pixel regions comprises a light emitting region and a transparent region, and wherein the display substrate comprises: a base substrate; and a display layer on a side of the base substrate and in the normal display region and the light transmitting display region, the display layer comprises a plurality of insulating layers, and a portion of the display layer in the transparent region has a first hollow part that extends through at least one insulating layer of the plurality of insulating layers, wherein the display substrate further comprises a light shielding layer in the light transmitting display region, the light shielding layer is between the base substrate and the display layer, a portion of the light shielding layer in the transparent region comprises a second hollow part, and an orthographic projection of the first hollow part on the base substrate at least partially overlaps an orthographic projection of the second hollow part on the base substrate.

2 . The display substrate according to claim 1 , wherein the display layer comprises a sub-pixel in the light emitting region, the sub-pixel comprises a pixel circuit and a light emitting element on a side of the pixel circuit away from the base substrate, and the pixel circuit is configured to drive the light emitting element to emit light and the pixel circuit comprises at least one thin-film transistor,
wherein the thin-film transistor comprises an active layer, a gate on a side of the active layer away from the base substrate, and a source and a drain that are on a side of the gate away from the base substrate, wherein the plurality of insulating layers comprise a gate insulating layer between the active layer and the gate, an interlayer dielectric layer between the gate and the source, and a planarization layer on a side of the source and the drain away from the base substrate, and wherein the first hollow part extends through at least one of the gate insulating layer, the interlayer dielectric layer or the planarization layer.

3 . The display substrate according to claim 2 , wherein the first hollow part extends through the gate insulating layer, the interlayer dielectric layer and the planarization layer.

4 . The display substrate according to claim 2 , wherein the light emitting element comprises an anode, a light emitting functional layer and a cathode that are successively arranged away from the base substrate,
wherein the plurality of insulating layers further comprise a pixel defining layer on a side of the anode away from the base substrate, wherein the pixel defining layer comprises an opening, and the light emitting functional layer is in the opening, and wherein the first hollow part extends through the pixel defining layer.

5 . The display substrate according to claim 2 , wherein the plurality of insulating layers further comprise a buffer layer between the active layer and the light shielding layer, and the first hollow part extends through the buffer layer.

6 . The display substrate according to claim 1 , wherein the display substrate further comprises an etch barrier layer in the light transmitting display region and between the light shielding layer and the display layer, and
wherein the second hollow part extends through the etch barrier layer.

7 . The display substrate according to claim 6 , wherein the etch barrier layer is a transparent conductive layer.

8 . The display substrate according to claim 1 , wherein the orthographic projection of the first hollow part on the base substrate coincides with the orthographic projection of the second hollow part on the base substrate.

9 . The display substrate according to claim 1 , wherein the orthographic projection of the second hollow part on the base substrate is within the orthographic projection of the first hollow part on the base substrate.

10 . The display substrate according to claim 1 , wherein the light shielding layer comprises one or more of a black resin layer and a metal layer.

11 . The display substrate according to claim 1 , wherein the light shielding layer comprises a metal layer.

12 . The display substrate according to claim 1 , wherein the display layer further comprises a plurality of wirings electrically connected to sub-pixels, some wirings of the plurality of wirings extend from the normal display region into the light transmitting display region, and an orthographic projection of a portion of the plurality of wirings in the light transmitting display region on the base substrate at least partially overlaps an orthographic projection of a light shielding layer on the base substrate.

13 . The display substrate according to claim 12 , wherein the plurality of wirings comprise a plurality of gate lines extending along a first direction and a plurality of data lines extending along a second direction, and the first direction intersects with the second direction.

14 . A display device, comprising:
the display substrate according to claim 1 ; and a photosensitive sensor, wherein an orthographic projection of the photosensitive sensor on the display substrate at least partially overlaps the light transmitting display region.

15 . The display device according to claim 14 , wherein the display layer comprises a plurality of wirings electrically connected to sub-pixels, some wirings of the plurality of wirings extend from the normal display region into the light transmitting display region, and an orthographic projection of a portion of the plurality of wirings in the light transmitting display region on the base substrate at least partially overlaps an orthographic projection of a light shielding layer on the base substrate.

16 . The display device according to claim 15 , wherein the plurality of wirings comprise a plurality of gate lines extending along a first direction and a plurality of data lines extending along a second direction, and the first direction intersects with the second direction.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Wang Hejin
• Hsieh Mingche
• Wang Pinfan

Classifications

• H10K59/131

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

• H10K59/126

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

• H10K59/124

  Insulating layers formed between TFT elements and OLED elements · CPC title

• H10K59/65

  OLEDs integrated with inorganic image sensors · CPC title

• H10K59/122 Primary

  Pixel-defining structures or layers, e.g. banks · CPC title