Patent ID: 11963435
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 8:
9. A method for fabricating a flexible display panel, the method comprising:
providing a flexible base substrate, the flexible base substrate comprising a bendable region;
forming an isolation buffer layer on the flexible base substrate;
forming a trench penetrating at least part of the isolation buffer layer;
filling a first buffer layer in the trench; and
forming lead wires on the first buffer layer;
forming a second buffer layer on the lead wires;
wherein the first buffer layer has a smaller elastic modulus than the isolation buffer layer;
at least part of the first buffer layer and the second buffer layer are conformal with the bendable region during bending of the bendable region;
the trench includes a bottom surface, and a first side surface and a second side surface located on both sides of the bottom surface respectively and connected to the bottom surface;
a thickness of the first buffer layer in a direction perpendicular to the flexible base substrate is lower than a depth of the trench;
each of the first side surface and the second side surface comprises two sloped surfaces and a step surface between the two sloped surfaces, and an angle of each of the two sloped surfaces is less than 90 degrees; and
the first buffer layer covers the two sloped surfaces and the step surface to form a smooth side surface in the trench.