Patent ID: 11889725
Assignee: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: nan (nan)
Classification: CPC nan | IPC H

Claim 20:
21. The method according to claim 20, wherein the forming the organic insulation layer on the flexible substrate comprises:
forming a first planarization thin film on the flexible substrate;
patterning the first planarization thin film to form a first planarization layer;
forming a second planarization thin film on one side of the first planarization layer distal to the flexible substrate, the second planarization thin film overlaying the first planarization layer; and
patterning the second planarization thin film by using the dual-tone mask to form a second planarization layer having the first groove,
wherein the first groove is formed through the patterning process performed on the second planarization thin film in the peripheral area by using the dual-tone mask, and the first groove penetrates the first planarization layer and the second planarization layer.