Invention Grant
- Patent Title: Equalizing parasitic capacitance effects in touch screens
- Patent Title (中): 在触摸屏中均衡寄生电容效应
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Application No.: US12757896Application Date: 2010-04-09
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Publication No.: US09285909B2Publication Date: 2016-03-15
- Inventor: Shih Chang Chang , Steven Porter Hotelling , Cheng Ho Yu
- Applicant: Shih Chang Chang , Steven Porter Hotelling , Cheng Ho Yu
- 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:
Reduction of the effects of differences in parasitic capacitances in touch screens is provided. A touch screen can include multiple display pixels with stackups that each include a first element and a second element. For example, the first element can be a common electrode, and the second element can be a data line. The display pixels can include a first display pixel including a third element connected to the first element, and the third element can contribute to a first parasitic capacitance between the first and second elements of the first display pixel, for example, by overlapping with the second element. The touch screen can also include a second display pixel lacking the third element. The second display pixel can include a second parasitic capacitance between the first and second elements of the second display pixel. The first and second parasitic capacitances can be substantially equal, for example.
Public/Granted literature
- US20110248949A1 EQUALIZING PARASITIC CAPACITANCE EFFECTS IN TOUCH SCREENS Public/Granted day:2011-10-13
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