US 11,903,253 B2
Display substrate including a retaining wall in a frame area and display device having the same
Lina Wang, Beijing (CN); Zifeng Wang, Beijing (CN); Haoyuan Fan, Beijing (CN); Jenyu Lee, Beijing (CN); Yong Hu, Beijing (CN); Zerui Zhang, Beijing (CN); and Dali Li, Beijing (CN)
Assigned to MIANYANG BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Mianyang (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Filed by MIANYANG BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Filed on Aug. 27, 2021, as Appl. No. 17/459,319.
Claims priority of application No. 202110121161.6 (CN), filed on Jan. 28, 2021.
Prior Publication US 2022/0238618 A1, Jul. 28, 2022
Int. Cl. H01L 27/12 (2006.01); H10K 59/121 (2023.01); G06F 3/041 (2006.01); H10K 50/844 (2023.01); H10K 59/122 (2023.01); H10K 59/123 (2023.01); H10K 59/124 (2023.01); H10K 59/40 (2023.01)
CPC H10K 59/1213 (2023.02) [G06F 3/0412 (2013.01); H10K 50/844 (2023.02); H10K 59/122 (2023.02); H10K 59/123 (2023.02); H10K 59/124 (2023.02); H10K 59/1216 (2023.02); G06F 3/04164 (2019.05); H01L 27/1255 (2013.01); H10K 59/40 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display substrate, the display substrate comprising a display area and a frame area, the display substrate comprising:
a substrate;
a plurality of sub-pixels on a side of the substrate, the plurality of sub-pixels configured to emit light in the display area;
an encapsulation layer on a side of the plurality of sub-pixels away from the substrate; and
a retaining wall in the frame area, wherein the retaining wall is between the encapsulation layer and the substrate and comprises a first sub-retaining wall, a second sub-retaining wall, and a transition area between the first sub-retaining wall and the second sub-retaining wall,
wherein the second sub-retaining wall is on a side of the first sub-retaining wall away from the display area, a vertical distance between an end of the second sub-retaining wall away from the substrate and the substrate is greater than the vertical distance between an end of the first sub-retaining wall away from the substrate and the substrate, the vertical distance between the end of the first sub-retaining wall away from the substrate and the substrate is greater than a vertical distance between and end of the transition area away from the substrate and the substrate; and
wherein, the retaining wall comprises at least one layer provided in a same layer, the at least one layer provided in the same layer continuously extends across the first sub-retaining wall, the second sub-retaining wall and the transition area.