US 11,751,421 B2
OLED display substrate and method for preparing the same, and display device
Yanzhen Cui, Beijing (CN); Jin Han, Beijing (CN); Honghong Jia, Beijing (CN); Lijin Zhao, Beijing (CN); and Xiaojun Gu, Beijing (CN)
Assigned to BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 16/643,720
Filed by BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed May 21, 2019, PCT No. PCT/CN2019/087786
§ 371(c)(1), (2) Date Mar. 2, 2020,
PCT Pub. No. WO2019/228225, PCT Pub. Date Dec. 5, 2019.
Claims priority of application No. 201810551648.6 (CN), filed on May 31, 2018.
Prior Publication US 2021/0159451 A1, May 27, 2021
Int. Cl. H01L 51/52 (2006.01); H10K 50/844 (2023.01); H10K 71/00 (2023.01); H10K 102/00 (2023.01)
CPC H10K 50/844 (2023.02) [H10K 50/8445 (2023.02); H10K 71/00 (2023.02); H10K 2102/311 (2023.02)] 17 Claims
OG exemplary drawing
 
1. An Organic Light-Emitting Diode (OLED) display substrate, comprising an OLED device located on a base substrate and a packaging unit covering the OLED device, wherein the packaging unit comprises an inorganic material layer, an organic material layer, and a fluorine-doped diamond-like carbon layer which is located between the inorganic material layer and the organic material layer and directly in physical contact with both the inorganic material layer and the organic material layer,
wherein the packaging unit further comprises a definition structure locating on and being directly in physical contact with a surface of the inorganic material layer parallel to an extending direction of the base substrate, and extending around the periphery of the organic material layer and the fluorine-doped diamond-like carbon layer,
wherein the organic material layer and the fluorine-doped diamond-like carbon layer of the packaging unit are located in a region defined by the definition structure, the fluorine-doped diamond-like carbon layer is located throughout the region defined by the definition structure on the inorganic material layer, and
wherein the definition structure is directly in physical contact with surfaces of both the fluorine-doped diamond-like carbon layer and the organic material layer extending in a direction from the base substrate to the OLED device.