Invention Grant
- Patent Title: Sensor with diffusing resistor
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Application No.: US14866846Application Date: 2015-09-26
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Publication No.: US09921696B2Publication Date: 2018-03-20
- Inventor: Steven P. Hotelling , Vivek Pant , Prathit Bugnait , Isaac Chan
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Morrison & Foerster LLP
- Main IPC: G06F3/041
- IPC: G06F3/041 ; G06F3/044

Abstract:
Electrode configurations for reducing wobble error for a stylus translating on a surface over and between electrodes of a touch sensor panel is disclosed. In some examples, electrodes associated with a more linear signal profile are correlated with lower wobble error. In some examples, electrodes are coupled to adjacent electrodes via diffusing resistors such that the signal profile for each electrode is spread to be more linear. In some configurations, the value of the diffusing resistors and series resistance associated with an electrode is selected based on a desired signal profile for that electrode. In some examples, the series resistance can include a trace resistance and a compensating resistance. The compensating resistance can compensate for a variance in trace resistance between electrodes, thus making series resistance substantially equal for each of the electrodes.
Public/Granted literature
- US20160313825A1 SENSOR WITH DIFFUSING RESISTOR Public/Granted day:2016-10-27
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