Invention Grant
- Patent Title: Touch screen border regions
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Application No.: US14627995Application Date: 2015-02-20
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Publication No.: US09864445B2Publication Date: 2018-01-09
- Inventor: Marduke Yousefpor , Steven P. Hotelling , Kevin J. White , Shih Chang Chang
- 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: G06F3/044
- IPC: G06F3/044 ; G06F3/041 ; G02F1/1333 ; G06F1/16 ; G02F1/1362 ; G09G3/36

Abstract:
Touch screens with more compact border regions can include an active area that includes touch sensing circuitry including drive lines, and a border region around the active area. The border region can include an area of sealant deposited on conductive lines, and transistor circuitry, such as gate drivers, between the active area and the sealant. The conductive lines can extend from the sealant to the active area without electrically connecting to the transistor circuitry. The conductive lines can have equal impedances and can connect the drive lines to a touch controller off of the touch screen. A set of drive signal characteristics for the drive lines can be obtained by determining a transfer function associated with each drive line, obtaining an inverse of each transfer function, and applying a set of individual sense signal characteristics to the inverse transfer functions to obtain the corresponding set of drive signal characteristics.
Public/Granted literature
- US20150160769A1 TOUCH SCREEN BORDER REGIONS Public/Granted day:2015-06-11
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