Patent ID: 11908224
Assignee: BOE TECHNOLOGY GROUP CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A fingerprint identification structure, comprising:
a driving electrode layer, comprising N driving electrodes arranged at intervals;
a piezoelectric material layer, located on a side of the driving electrode layer;
a receiving electrode layer, located on a side of the piezoelectric material layer away from the driving electrode layer, and comprising M receiving electrodes;
an auxiliary driving electrode layer, located on a side of the piezoelectric material layer away from the receiving electrode layer, and arranged in a different layer from the driving electrode layer; and
a first insulating layer, located between the driving electrode layer and the auxiliary driving electrode layer,
wherein the auxiliary driving electrode layer comprises N auxiliary driving electrodes, the N driving electrodes and the N auxiliary driving electrodes are alternately arranged, an orthographic projection of an i-th auxiliary driving electrode on the piezoelectric material layer is overlapped with an interval between an orthographic projection of an i-th driving electrode on the piezoelectric material layer and an orthographic projection of an (i+1)-th driving electrode on the piezoelectric material layer, M is a positive integer greater than or equal to 2, N is a positive integer greater than or equal to 2, and i is a positive integer greater than or equal to 1 and less than N.