Touch display substrate and touch display apparatus

Patent metadata

Field	Value
Publication number	US-2025374793-A1
Application number	US-202519299381-A
Country	US
Kind code	A1
Filing date	Aug 14, 2025
Priority date	May 5, 2022
Publication date	Dec 4, 2025
Grant date	—

Abstract

A touch display substrate and a touch display apparatus are provided. The touch display substrate including: a display region and a non-display region, the display region including a first display region and a second display region, the first display region surrounding at least one side of the second display region; the touch display substrate includes a base substrate and a display structure layer and a touch structure layer disposed on the base substrate sequentially; the first display region includes a first touch assembly, and the second display region includes a second touch assembly; the display structure layer includes multiple pixel circuits located in the first display region and multiple light emitting elements located in the first display region and second display region; the first touch assembly is located in the touch structure layer, and the second touch assembly is located in the display structure layer and/or the touch structure layer.

First claim

1 . A touch display substrate, comprising: a display region and a non-display region, wherein the display region comprises a first display region and a second display region, the first display region surrounding at least one side of the second display region; the touch display substrate comprises a base substrate and a display structure layer and a touch structure layer disposed on the base substrate sequentially; the first display region comprises a first touch assembly, and the second display region comprises a second touch assembly;
the display structure layer comprises a plurality of pixel circuits located in the first display region and a plurality of light emitting elements located in the first display region and the second display region; the first touch assembly is located in the touch structure layer, and the second touch assembly is located in the display structure layer.

2 . The touch display substrate of claim 1 , wherein the light emitting element comprises a first light emitting element disposed in the first display region and a second light emitting element disposed in the second display region, and the display structure layer comprises a plurality of first sub-pixels located in the first display region and a plurality of second sub-pixels located in the second display region;
the first sub-pixel comprises a first pixel circuit and a first light emitting element connected with the first pixel circuit, and the second sub-pixel comprises a second light emitting element, wherein the first pixel circuit is disposed in the first display region; a plurality of second sub-pixels constitute one pixel island, and a distance between adjacent pixel islands is greater than a distance between adjacent second sub-pixels located in a same pixel island.

3 . The touch display substrate of claim 2 , wherein the display structure layer further comprises an anode connecting line, and the pixel circuit comprises a second pixel circuit disposed in the first display region, wherein the second pixel circuit is connected with the second light emitting element through the anode connecting line, and the anode connecting line comprises a transparent wire.

4 . The touch display substrate of claim 2 , wherein the second sub-pixel further comprises a second pixel circuit connected with the second light emitting element, wherein the second pixel circuit is disposed in the second display region, and an orthographic projection of the second pixel circuit on the base substrate is overlapped with an orthographic projection of the pixel island on the base substrate.

5 . The touch display substrate of claim 3 , wherein the display structure layer comprises a circuit structure layer and a light emitting structure layer which are sequentially stacked on the base substrate; the circuit structure layer comprises a first pixel circuit and a second pixel circuit;
the first pixel circuit and the second pixel circuit comprise a transistor; the circuit structure layer comprises an active layer, a first insulating layer, a gate electrode, a second insulating layer, a source-drain electrode, a first planarization layer, an anode connecting line, and a second planarization layer which are sequentially stacked on the base substrate; the light emitting element comprises an anode, a light emitting layer, and a cathode, and the light emitting structure layer comprises a first light emitting element and a second light emitting element.

6 . The touch display substrate of claim 5 , wherein a cathode of the second light emitting element is in a planar structure;
or, the circuit structure layer further comprises a cathode connecting line, cathodes of a plurality of second light emitting elements are in a block-shaped structure and disposed at an interval, wherein cathodes of adjacent second light emitting elements are electrically connected through the cathode connecting line, and the cathode connecting line is disposed in a same layer as the cathode and is a transparent wire.

7 . The touch display substrate of claim 2 , wherein the first touch assembly comprises: a plurality of first touch structures extending along a first direction and a plurality of second touch structures extending along a second direction, wherein the plurality of first touch structures are arranged along the second direction, and the plurality of second touch structures are arranged along the first direction; the first touch structure comprises a plurality of first touch electrodes and a plurality of first connecting parts, and a second touch structure comprises a plurality of second touch electrodes and a plurality of second connecting parts, wherein the first direction and the second direction intersect, and a first touch electrode and a second touch electrode constitute a first touch electrode unit;
the first touch electrode, the second touch electrode, and one connecting part of the first connecting part and the second connecting part are disposed in a same layer, and are disposed in a different layer from the other connecting part of the first connecting part and the second connecting part; the touch structure layer comprises the first touch electrode, the second touch electrode, the first connecting part, and the second connecting part; the touch structure layer further comprises a buffer layer, a touch insulating layer, and a protective layer which are sequentially stacked on the base substrate; the first touch electrode, the second touch electrode, and the connecting part disposed in the same layer as the first touch electrode are located between the touch insulating layer and the protective layer, and the connecting part disposed in the different layer from the first touch electrode is located between the buffer layer and the touch insulating layer; the first touch electrode and the second touch electrode are metal touch electrodes, the connecting part disposed in the same layer as the first touch electrode is a metal touch connecting part, and the connecting part disposed in the different layer from the first touch electrode is a metal touch connecting part or a transparent touch connecting part.

8 . The touch display substrate of claim 2 , wherein the first touch assembly comprises: a plurality of first touch structures extending along a first direction and a plurality of second touch structures extending along the first direction, wherein the plurality of first touch structures are arranged along a second direction, and the plurality of second touch structures are arranged along the second direction; the first touch structure comprises a plurality of first touch electrodes and a plurality of first connecting parts, and the second touch structure comprises a plurality of second touch electrodes and a plurality of second connecting parts, wherein the first touch electrodes and the second touch electrodes are alternately disposed along the second direction, the first direction and the second direction intersect, and the first touch electrode and the second touch electrode constitute a first touch electrode unit;
the first touch electrode, the second touch electrode, the first connecting part, and the second connecting part are disposed in a same layer; the touch structure layer comprises the first touch electrode, the second touch electrode, the first connecting part, and the second connecting part; the touch structure layer further comprises a buffer layer and a protective layer which are sequentially stacked on the base substrate; the first touch electrode, the second touch electrode, the first connecting part, and the second connecting part are located between the buffer layer and the protective layer; the first touch electrode and the second touch electrode are metal touch electrodes, and the first connecting part

Assignees

• Boe Technology Group Co Ltd

Inventors

• Liang Ke
• Tong Kemeng
• Fang Fei
• Yan Jun
• Zheng Kening
• Wang Jingquan
• Li Xinguo

Classifications

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/873

  Encapsulations · CPC title

• H10K59/1213

  the pixel elements being TFTs · CPC title

• H10K59/122

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

• H10K59/65

  OLEDs integrated with inorganic image sensors · CPC title