Invention Grant
- Patent Title: Touch sensor panels with reduced static capacitance
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Application No.: US13921155Application Date: 2013-06-18
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Publication No.: US09268445B2Publication Date: 2016-02-23
- Inventor: Steven Porter Hotelling , Marduke Yousefpor
- 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: G08C21/00
- IPC: G08C21/00 ; G06F3/044 ; G06F3/041 ; H03K17/96

Abstract:
Capacitive touch panels may include a plurality of positive voltage lines that are driven at a first phase. These positive voltage lines may be used to provide the drive capacitance signal sensed by one or more sense regions. The touch panels may also include a plurality of negative phase voltage lines that are driven at a phase that is different than the first phase. Both the positive and negative voltage lines may cross-under one or more sense regions. The negative phase voltage lines are able to counter act and reduce the static capacitance in the sense regions.
Public/Granted literature
- US20130278557A1 TOUCH SENSOR PANELS WITH REDUCED STATIC CAPACITANCE Public/Granted day:2013-10-24
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