Invention Grant
- Patent Title: CDM excitation on full in-cell matrix sensor array with reduced background capacitance
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Application No.: US15687841Application Date: 2017-08-28
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Publication No.: US10466848B2Publication Date: 2019-11-05
- Inventor: Tetsuo Tanemura , Nobukazu Tanaka , Takayuki Noto
- Applicant: SYNAPTICS INCORPORATED
- Applicant Address: US CA San Jose
- Assignee: SYNAPTICS INCORPORATED
- Current Assignee: SYNAPTICS INCORPORATED
- Current Assignee Address: US CA San Jose
- Agency: Patterson + Sheridan, LLP
- Main IPC: G06F3/044
- IPC: G06F3/044 ; G06F3/041 ; G09G3/20 ; H03K17/955 ; H03K17/96 ; G01R27/26

Abstract:
Embodiments described herein include a method for detecting a presence of an input in a capacitive sensing device that includes a sensing region and a plurality of sensor electrodes. The method includes driving a first column of transmitter sensor electrodes at a first potential and driving a second column of transmitter sensor electrodes at a second potential different than the first potential. The method includes acquiring a measurement from each row of sensor electrodes, where a first sensing node includes the first column of transmitter sensor electrodes and a third column of receiver sensor electrodes, and a second sensing node includes the second column of transmitter sensor electrodes and a fourth column of receiver sensor electrodes. The method also includes determining, using the measurements from each row of sensor electrodes, a first set of transcapacitive measurements corresponding to the plurality of sensor electrodes.
Public/Granted literature
- US20190064956A1 CDM EXCITATION ON FULL IN-CELL MATRIX SENSOR ARRAY WITH REDUCED BACKGROUND CAPACITANCE Public/Granted day:2019-02-28
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