Patent ID: 11956986
Assignee: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: nan (nan)
Classification: CPC H  Y | IPC H

Claim 10:
11. A manufacturing method of flexible display screen, comprising:
providing a flexible substrate;
forming an OLED device layer on the flexible substrate;
forming an encapsulation layer on the OLED device layer; and
forming an encapsulation protection layer on the encapsulation layer,
wherein the encapsulation protection layer is made of polyimide PI, the encapsulation protection layer has a thickness of 10-25 um, and the encapsulation protection layer has an elastic modulus of 4000 MPa-14000 MPa,
a ratio of a thickness of the encapsulation protection layer to a thickness of the flexible substrate is 1:2 to 1.25:1,
the flexible substrate has a thickness of 20 um and an elastic modulus of 7000 MPa.