US 12,238,979 B2
Display substrate and display panel
Fuqiang Yang, Beijing (CN); and Pan Zhao, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/618,475
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Feb. 2, 2021, PCT No. PCT/CN2021/074884
§ 371(c)(1), (2) Date Dec. 12, 2021,
PCT Pub. No. WO2021/196868, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 202020451671.0 (CN), filed on Mar. 31, 2020.
Prior Publication US 2022/0359632 A1, Nov. 10, 2022
Int. Cl. H10K 59/124 (2023.01); H10K 50/844 (2023.01); H10K 59/12 (2023.01); H10K 71/00 (2023.01); H10K 102/00 (2023.01)
CPC H10K 59/124 (2023.02) [H10K 50/844 (2023.02); H10K 71/00 (2023.02); H10K 59/1201 (2023.02); H10K 2102/351 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display substrate having an opening region, a transition region surrounding the opening region, and a display region surrounding the transition region; wherein the display substrate comprises:
a base plate,
post spacers and dam structures on the base plate, located in the transition region and surrounding the opening region; wherein the post spacers comprise a first post spacer on a side of the dam structures proximal to the display region;
an organic light emitting diode, a first encapsulation layer, a second encapsulation layer and a third encapsulation layer sequentially arranged on the base plate, wherein the organic light emitting diode is in the display region, and orthographic projections of the first encapsulation layer and the third encapsulation layer on the base plate at least cover the display region and the transition region; and an orthographic projection of the second encapsulation layer on the base plate covers the display region and the first post spacer in the transition region; wherein
a ratio of a thickness of a part of the second encapsulation layer on the first post spacer to a thickness of the first post spacer is 2:1 to 6:1.