Invention Grant
- Patent Title: Single layer capacitive touch force sensor
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Application No.: US17316345Application Date: 2021-05-10
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Publication No.: US11561638B2Publication Date: 2023-01-24
- Inventor: Chi-Chieh Liao
- Applicant: PIXART IMAGING INC.
- Applicant Address: TW Hsin-Chu County
- Assignee: PIXART IMAGING INC.
- Current Assignee: PIXART IMAGING INC.
- Current Assignee Address: TW Hsin-Chu County
- Agency: Hauptman Ham, LLP
- Main IPC: G06F3/041
- IPC: G06F3/041 ; G06F3/044

Abstract:
There is provided a touch force sensor including a first drive electrode, a second drive electrode and a receiving electrode. The first drive electrode is used to form a first capacitance with the receiving electrode. The second drive electrode is used to form a second capacitance with the receiving electrode. The receiving electrode shields the first drive electrode such that when a conductor approaches the receiving electrode, only the second capacitance is changed but the first capacitance is not changed. The first capacitance is changed only when the conductor gives a force upon the receiving electrode.
Public/Granted literature
- US20220357829A1 SINGLE LAYER CAPACITIVE TOUCH FORCE SENSOR Public/Granted day:2022-11-10
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