Display panel and method for manufacturing the same, and display apparatus

Patent metadata

Field	Value
Publication number	US-2024224638-A1
Application number	US-202117914867-A
Country	US
Kind code	A1
Filing date	Nov 23, 2021
Priority date	May 13, 2021
Publication date	Jul 4, 2024
Grant date	—

Abstract

A display panel includes: a substrate, a plurality of groups of electrical connection patterns and a plurality of insulating layers. Each group of electrical connection patterns include at least three conductive pattern layers that are coupled to each other. Every two adjacent conductive pattern layers are provided with an insulating layer therebetween. An insulating layer between the first conductive pattern layer and the second conductive pattern layer is provided with a first via hole extending through the insulating layer, and the second conductive pattern layer and the first conductive pattern layer are coupled through the first via hole. Multiple insulating layers between the first conductive pattern layer and the third conductive pattern layer are provided with a second via hole extending through the multiple insulating layers, and the first conductive pattern layer and the third conductive pattern layer are coupled through the second via hole.

First claim

1 . A display panel, comprising:
a substrate; a plurality of groups of electrical connection patterns disposed on the substrate; and a plurality of insulating layers, wherein each group of electrical connection patterns include at least three conductive pattern layers that are coupled to each other; the at least three conductive pattern layers include a first conductive pattern layer, a second conductive pattern layer and a third conductive pattern layer that are arranged sequentially in a direction proximate to the substrate; every two adjacent conductive pattern layers are provided with an insulating layer in the plurality of insulating layers therebetween; an orthographic projection of the first conductive pattern layer on the substrate and an orthographic projection of the second conductive pattern layer on the substrate have a first overlapping region; an insulating layer located between the first conductive pattern layer and the second conductive pattern layer is provided with a first via hole extending through the insulating layer in the first overlapping region, and the second conductive pattern layer and the first conductive pattern layer are coupled through the first via hole; and an orthographic projection of the third conductive pattern layer on the substrate and the orthographic projection of the first conductive pattern layer on the substrate have a second overlapping region; each conductive pattern layer between the first conductive pattern layer and the third conductive pattern layer is outside the second overlapping region; multiple insulating layers located between the first conductive pattern layer and the third conductive pattern layer are provided with a second via hole extending through the multiple insulating layers in the second overlapping region, and the first conductive pattern layer and the third conductive pattern layer are coupled through the second via hole.

2 . The display panel according to claim 1 , wherein
the at least three conductive pattern layers further include a fourth conductive pattern layer; the fourth conductive pattern layer is located between the second conductive pattern layer and the third conductive pattern layer, and the fourth conductive pattern layer is coupled to any conductive pattern layer except the fourth conductive pattern layer in the at least three conductive pattern layers.

3 . The display panel according to claim 1 , wherein
the display panel has a display region, the display region includes a first display region and a second display region, and a light transmittance of the first display region is greater than a light transmittance of the second display region; the display panel further comprises: a plurality of first light-emitting devices disposed on the substrate and located in the first display region, and a plurality of pixel driving circuits disposed on the substrate and located in the second display region; each first light-emitting device is coupled to a pixel driving circuit in the plurality of pixel driving circuits through a group of electrical connection patterns.

4 . The display panel according to claim 3 , wherein
each first light-emitting device includes a first electrode, a light-emitting layer and a second electrode that are sequentially arranged in a direction away from the substrate.

5 . A display apparatus, comprising the display panel according to claim 1 .

6 . The display apparatus according to claim 5 , wherein
the display panel has a display region, and the display region includes a first display region and a second display region; the display apparatus further comprises a photosensitive element; the photosensitive element is disposed at a position of the display panel corresponding to the first display region and located on a side of the display panel facing away from a light-exiting surface of the display panel, and the photosensitive element includes a photosensitive portion that faces the light-exiting surface of the display panel.

7 . The display apparatus according to claim 6 , wherein
the display panel is provided with a hole on a back of the display panel and at a position of the display panel corresponding to the first display region, and the photosensitive element is disposed in the hole.

8 . A method for manufacturing the display panel according to claim 1 , the method comprising:
forming the plurality of groups of electrical connection patterns and the plurality of insulating layers on the substrate, which includes:
forming the at least three conductive pattern layers including the third conductive pattern layer, the second conductive pattern layer, and the first conductive pattern layer sequentially on the substrate, and forming the insulating layer between every two adjacent conductive pattern layers on the substrate, wherein the orthographic projection of the second conductive pattern layer on the substrate and the orthographic projection of the first conductive pattern layer on the substrate have the first overlapping region, the orthographic projection of the third conductive pattern layer on the substrate and the orthographic projection of the first conductive pattern layer on the substrate have the second overlapping region, and each conductive pattern layer located between the third conductive pattern layer and the first conductive pattern layer is outside the second overlapping region; and
through a same patterning process, forming the first via hole extending through the insulating layer and located in the first overlapping region in the insulating layer between the first conductive pattern layer and the second conductive pattern layer, and the second via hole extending through the multiple insulating layers and located in the second overlapping region in the multiple insulating layers between the first conductive pattern layer and the third conductive pattern layer, so that the first conductive pattern layer is coupled to the second conductive pattern layer through the first via hole, and the first conductive pattern layer is coupled to the third conductive pattern layer through the second via hole.

9 . The method for manufacturing the display panel according to claim 8 , wherein
the display panel has a display region, and the display region includes a first display region and a second display region; forming the at least three conductive pattern lavers including the third conductive pattern layer, the second conductive pattern layer, and the first conductive pattern layer sequentially on the substrate includes: forming a transparent line in both the first display region and the second display region, the transparent line being any of the at least three conductive pattern layers, and forming remaining conductive pattern layers except the transparent line in the first display region or in the second display region.

10 . The display panel according to claim 1 , wherein
the at least three conductive pattern layers further include at least two conductive pattern layers located between the second conductive pattern layer and the third conductive pattern layer; one of the at least two conductive pattern layers is coupled to a conductive pattern layer except the at least two conductive pattern layers in the at least three conductive pattern layers, and another of the at least two conductive pattern layers is coupled to another conductive pattern layer except the at least two conductive pattern layers in the at least three conductive pattern layers.

11 . The display panel according to claim 3 , wherein
each conductive pattern layer in each group of electrical connection patterns is a transparent conductive layer; one of the at least three conductive pattern layers is

Assignees

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

Inventors

• Du Lili
• Yang Xiaofeng
• Xu Zhongguo
• Wang Mingwen

Classifications

• H10K59/65

  OLEDs integrated with inorganic image sensors · CPC title

• H10K59/131 Primary

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

• H10K59/1201 Primary

  Manufacture or treatment · CPC title

• G09G3/30

  using electroluminescent panels · CPC title

• G09F9/30 Primary

  in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) · CPC title