Invention Grant
- Patent Title: Reconfigurable circuit topology for both self-capacitance and mutual capacitance sensing
-
Application No.: US14089418Application Date: 2013-11-25
-
Publication No.: US09933879B2Publication Date: 2018-04-03
- Inventor: Weijun Yao , Kingsuk Brahma , Taif A. Syed
- 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:
A touch sensor panel configured to switch between a mutual capacitance touch sensing architecture and a self-capacitance touch sensing architecture is provided. The touch sensor panel includes circuitry that can switch the configuration of touch electrodes to act as either drive lines in a mutual capacitance configuration or as sense electrodes in a self-capacitance configuration. The touch sensor panel also includes circuitry that can switch the configuration of touch electrodes to act as either sense lines in a mutual capacitance configuration or as sense electrode in a self-capacitance configuration. By splitting a self-capacitance touch mode into a drive line self-capacitive mode and sense line self-capacitive mode, the touch sensor panel is able to reuse components thus requiring less space, weight and power.
Public/Granted literature
- US20150145802A1 RECONFIGURABLE CIRCUIT TOPOLOGY FOR BOTH SELF-CAP AND MUTUAL CAP SENSING Public/Granted day:2015-05-28
Information query