Patent ID: 11914811
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 11:
12. A method for a preparing a display substrate, comprising:
forming a flexible base substrate on a rigid carrier plate;
forming a driving structure layer on the flexible base substrate, wherein the driving structure layer comprises a first metal layer, a second metal layer and an insulating layer located between the first metal layer and the second metal layer, the first metal layer comprises one or more first unit test electrodes, and the second metal layer comprises one or more second unit test electrodes; and
separating the flexible base substrate from the rigid carrier plate;
wherein the display substrate comprises a display area, and the display area comprises a first insulating layer located on the flexible base substrate, an active layer located on the first insulating layer, a second insulating layer covering the active layer, a first gate metal layer located on the second insulating layer, a third insulating layer covering the first gate metal layer, a second gate metal layer located on the third insulating layer, a fourth insulating layer covering the second gate metal layer, a first source-drain metal layer located on the fourth insulating layer, and a fifth insulating layer covering the first source-drain metal layer;
the first metal layer is disposed in a same layer as the first gate metal layer, and the second metal layer is disposed in a same layer as the second gate metal layer; or, the first metal layer is disposed in a same layer as the second gate metal layer, and the second metal layer is disposed in a same layer as the first source-drain metal layer.