Patent ID: 11928274
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  C | IPC G

Claim 5:
6. A method for manufacturing a protective film, comprising:
providing a transparent substrate layer; and
forming a transparent hardened layer covering a surface of the transparent substrate layer on the transparent substrate layer, wherein the transparent hardened layer comprises a first region covering a middle portion of the transparent substrate layer and a second region covering an edge of the transparent substrate layer, a hardness of the first region being greater than a hardness of the second region; and
wherein the protective film is configured to be attached to a substrate to protect the substrate from being damaged; and
wherein forming the transparent hardened layer covering the surface of the transparent substrate layer on the transparent substrate layer comprises:
forming a photocurable coating on the surface of the transparent substrate layer; and
curing, by light irradiation, the photocurable coating into the transparent hardened layer, wherein a light irradiation duration of the photocurable coating disposed on the middle portion of the transparent substrate layer is longer than a light irradiation duration of the photocurable coating disposed at the edge of the transparent substrate layer.