Patent ID: 11953400
Assignee: PIXART IMAGING INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A pressure sensing unit for detecting pressing events comprising:
a membrane having a first surface and a second surface opposite to the first surface; and
a pressure sensing pad group including a first pressure sensing pad, a second pressure sensing pad, and a ground pad that are spaced apart from one another;
wherein the ground pad and one among the first pressure sensing pad and the second pressure sensing pad are located at the first surface of the membrane, another one among the first pressure sensing pad and the second pressure sensing pad is located at the second surface of the membrane, and an orthographic projection of the ground pad projected onto a reference plane is located between orthographic projections of the first pressure sensing pad and the second pressure sensing pad that are projected onto the reference plane.