Invention Grant
US09411469B2 Touch screen device, and driving device and driving method for touch panel using predetermined waveforms
有权
触摸屏装置,以及使用预定波形的触摸面板的驱动装置和驱动方法
- Patent Title: Touch screen device, and driving device and driving method for touch panel using predetermined waveforms
- Patent Title (中): 触摸屏装置,以及使用预定波形的触摸面板的驱动装置和驱动方法
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Application No.: US14829514Application Date: 2015-08-18
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Publication No.: US09411469B2Publication Date: 2016-08-09
- Inventor: Il Hyun Yun , Hyung Cheol Shin
- Applicant: ZINITIX
- Applicant Address: KR Daejeon
- Assignee: ZINITIX
- Current Assignee: ZINITIX
- Current Assignee Address: KR Daejeon
- Main IPC: G06F3/044
- IPC: G06F3/044 ; G06F3/041

Abstract:
A driving circuit outputs driving waveforms to operation signal lines. The waveforms are formed by combining a first-mode waveform for charging a node capacitor with a positive voltage and a second-mode waveform for charging the node capacitor with a negative voltage in a predetermined binary sequence. A sensing circuit is electrically connected with a plurality of sense signal lines and measures sense voltages delivered to one integration capacitor from a plurality of node capacitors which are electrically connected with the sense signal lines. A sense detector adds or subtracts the sense voltages which are measured by the sensing circuit at driving time points to measure capacitances of the node capacitors. Accordingly, an autocorrelation technique which is generally used in communication systems is applied to driving a touch screen device.
Public/Granted literature
- US20150355785A1 TOUCH SCREEN DEVICE, AND DRIVING DEVICE AND DRIVING METHOD FOR TOUCH PANEL Public/Granted day:2015-12-10
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