US 12,740,303 B2Granted

Display substrate, manufacturing method thereof and display device

AssigneesChengdu Boe Optoelectronics Technology Co., Ltd., Boe Technology Group Co., Ltd.

InventorsXiaoyan Yang, Yuqing Yang, Xiping Li, Huiyang Yu, Fengxia Tan, Yong Zhuo, Hui Li, Wei Zhang, Jonguk Kwak, Shicheng Sun, Xinwei Wu, Cunzhi Li, Dongsheng Zhao

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Abstract

The present disclosure provides a display substrate, including: a base substrate having an opening region, a transition region surrounding the opening region and a pixel region surrounding the opening region; at least one ink-jet printing dam in the transition region and surrounding the opening region; and at least one conductive film layer in the transition region, where an orthographic projection of the conductive film layer on the base substrate is overlapped with an orthographic projection of the ink-jet printing dam on the base substrate. In the technical solution of the present disclosure, the conductive film layer is intended to absorb and conduct heat, so as to reduce the heat on the ink-jet printing dam.

Claims20

Dependent claims

A display substrate, comprising:

a base substrate having an opening region, a transition region surrounding the opening region and a pixel region surrounding the opening region;
at least one ink-jet printing dam in the transition region, the at least one ink-jet printing dam surrounding the opening region;
and
at least one conductive film layer in the transition region, wherein an orthographic projection of the conductive film layer on the base substrate is overlapped with an orthographic projection of the ink-jet printing dam on the base substrate, and at least a part of the at least one conductive film layer is on a side of the ink-jet printing dam facing away from the base substrate,
wherein the at least one conductive film layer comprises a first film layer, a second film layer and a third film layer, and the first film layer, the second film layer and the third film layer stack at a side of the at least one ink-jet printing dam close to the base substrate and are spaced apart from each other.

2 more elements

A display device, comprising a display substrate, wherein the display substrate comprises:

a base substrate having an opening region, a transition region surrounding the opening region and a pixel region surrounding the opening region;
at least one ink-jet printing dam in the transition region, the at least one ink-jet printing dam surrounding the opening region;
and
at least one conductive film layer in the transition region, wherein an orthographic projection of the conductive film layer on the base substrate is overlapped with an orthographic projection of the ink-jet printing dam on the base substrate, and at least a part of the at least one conductive film layer is on a side of the ink-jet printing dam facing away from the base substrate,
wherein the at least one conductive film layer comprises a first film layer, a second film layer and a third film layer, and the first film layer, the second film layer and the third film layer stack at a side of the at least one ink-jet printing dam close to the base substrate and are spaced apart from each other.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/779,369Filed 14 Jul 2021
Priority: CN 202010897899.731 Aug 2020
Published: US 2022/0399413 A115 Dec 2022
Granted: 15 Sep 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H10K 59/88
Constructional details: dummy elements, i.e. elements having non-functional features
H10K 59/122
Active-matrix OLED [AMOLED] displays: pixel-defining structures or layers, e.g. banks
H10K 59/131
Active-matrix OLED [AMOLED] displays: interconnections, e.g. wiring lines or terminals
H10K 59/8794
Constructional details: arrangements for heating and cooling