Patent ID: 11865823
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 9:
10. A method of fabricating a flexible display substrate, comprising:
forming a back film layer on a back plate by employing a first manner or a second manner such that the back plate comprising a display area, which comprises a bending area and a non-bending area; and the back film layer disposed on the back plate and comprising a first sub-back film layer and a second sub-back film layer, wherein the first sub-back film layer is disposed on the non-bending area, and the second sub-back film layer is disposed on the bending area and covers a portion of the bending area, wherein
the first manner comprises attaching the first sub-back film layer to a non-bending area of a display area of the back plate, and attaching a patterned second sub-back film layer to a portion of a bending area of the display area, and
the second manner comprises coating an adhesive layer and the back film layer on an entire surface of the back plate, and removing a portion of the back film layer on the bending area by laser to form the patterned second sub-back film layer in the bending area and the first sub-back film layer in the non-bending area,
wherein the second sub-back film layer extends along a first direction in the bending area, the second sub-back film layer only comprises two spaced back film members, which are arranged at two ends of the bending area in a second direction perpendicular to the first direction, respectively, no other back film member is provided between the two spaced back film members, and each of the two spaced back film members is connected to the first sub-back film layer and has a hardness higher than a hardness of the first sub-back film layer.