Invention Grant
- Patent Title: Touch screen display uniformity
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Application No.: US15065284Application Date: 2016-03-09
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Publication No.: US10048788B2Publication Date: 2018-08-14
- Inventor: Yu Cheng Chen , Abbas Jamshidi-Roudbari , Hiroshi Osawa , Shang-Chih Lin , Shih-Chang Chang , Shin-Hung Yeh , Ting-Kuo Chang , Majid Gharghi , Keitaro Yamashita
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Morrison and Foerster LLP
- Main IPC: G06F3/041
- IPC: G06F3/041 ; G02F1/1333 ; G02F1/1343 ; G06F3/044

Abstract:
Improvement of visual uniformity of an integrated touch screen display is provided. A touch screen can include common electrodes separated by gaps in a Vcom layer. To improve visual non-uniformity in the display resulting from the gaps, a first set of semi-transparent dummy features (primary-dummy features) can be formed on a second layer at the locations of the gaps, and a second set of dummy features (supplementary-dummy features) can also be formed on the second layer or another layer to mitigate low spatial resolution of the primary-dummy features and/or non-uniform spacing of the primary-dummy features. In some examples, holes or slits can be formed in the Vcom layer at areas of the supplementary-dummy features to further improve visual uniformity.
Public/Granted literature
- US20160266693A1 TOUCH SCREEN DISPLAY UNIFORMITY Public/Granted day:2016-09-15
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