Invention Grant
- Patent Title: Capacitive touch panel with increased scan frequency using dynamic phase compensation
- Patent Title (中): 电容式触摸屏采用动态相位补偿增加扫描频率
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Application No.: US14580543Application Date: 2014-12-23
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Publication No.: US09552117B2Publication Date: 2017-01-24
- Inventor: David Johnson , Guozhong Shen , Firooz Massoudi
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Weaver Austin Villeneuve & Sampson LLP
- Main IPC: G06F3/044
- IPC: G06F3/044 ; G06F3/041
Abstract:
A system includes a first group of transmit electrodes configured to be driven from a first side of a capacitive touch panel and a second group of transmit electrodes configured to be driven from a second side of the panel. The system also includes receive electrodes and a controller operatively coupled with the transmit electrodes and the receive electrodes. The controller is operable to dynamically configure the transmit electrodes and the receive electrodes to compensate for phase delays introduced by driving the transmit electrodes from different sides of the panel. A method includes driving a first group of transmit electrodes from a first side of a capacitive touch panel, driving a second group of transmit electrodes from a second side of the panel, and dynamically configuring the transmit electrodes and receive electrodes to compensate for phase delays introduced by driving the transmit electrodes from different sides of the panel.
Public/Granted literature
- US20150370366A1 CAPACITIVE TOUCH PANEL WITH INCREASED SCAN FREQUENCY Public/Granted day:2015-12-24
Information query
