US 12,364,136 B2
Display substrate, display device, and manufacturing method
Linlin Wang, Beijing (CN)
Assigned to BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/763,211
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed May 20, 2021, PCT No. PCT/CN2021/094946
§ 371(c)(1), (2) Date Mar. 24, 2022,
PCT Pub. No. WO2021/238772, PCT Pub. Date Dec. 2, 2021.
Claims priority of application No. 202010455790.8 (CN), filed on May 26, 2020.
Prior Publication US 2022/0392980 A1, Dec. 8, 2022
Int. Cl. H10K 59/38 (2023.01); H10K 50/828 (2023.01); H10K 59/12 (2023.01); H10K 59/122 (2023.01); H10K 71/00 (2023.01); H10K 102/00 (2023.01)
CPC H10K 59/38 (2023.02) [H10K 50/828 (2023.02); H10K 59/122 (2023.02); H10K 71/00 (2023.02); H10K 59/1201 (2023.02); H10K 2102/331 (2023.02)] 12 Claims
OG exemplary drawing
 
1. A display substrate, comprising:
a TFT substrate; and
a pixel define layer provided on the TFT substrate and forming a plurality of pixel pits,
wherein an electroluminescent device layer, a connection layer, a first encapsulation layer, and a quantum dot layer are sequentially stacked in each pixel pit; connection layers in adjacent pixel pits are connected on a side of the pixel define layer away from the TFT substrate; and the connection layers are arranged to be electrically connected to electroluminescent device layers in two of the adjacent pixel pits,
wherein the pixel define layer is made of directional thermal expansion material, and
wherein the pixel define layer expands to 10 um to 14 um in a direction away from the TFT substrate after laser irradiation.