Invention Grant
US09348472B2 Touch screen driver and method for driving touch screen 有权
触摸屏驱动程序和触摸屏驱动方法

Touch screen driver and method for driving touch screen
Abstract:
A touch screen driver includes a touch screen including Tx channels, Rx channels crossing the Tx channels, and sensor nodes formed at crossings of the Tx channels and the Rx channels, a Tx driving circuit supplying a driving pulse to the Tx channels, an Rx driving circuit which samples voltages of the sensor nodes supplied through the Rx channels in response to Rx sampling clocks and converts the sampled voltages into digital data, and a touch controller which modulates the Rx sampling clocks based on an RC delay deviation between the Rx channels, supplies the modulated Rx sampling clocks to the Rx driving circuit, differently controls sampling times of the Rx channels, and analyzes the digital data using a previously determined touch recognition algorithm.
Public/Granted literature
Information query
Patent Agency Ranking
0/0