Patent ID: 9323381
Filing Date: 2016-04-26
CPC Classification: G06F

Claim Text:
1. A touch screen driver for driving a touch screen, which includes Tx lines, Rx lines and touch sensors formed at crossings of the Tx lines and the Rx lines, the touch screen driver comprising: a plurality of integrated circuits including a first integrated circuit and a second integrated circuit, and configured to dividedly drive the touch screen, wherein one of the plurality of integrated circuits, which generates a driving signal to be supplied to the Tx lines, transmits a synchronization signal synchronized with a rising edge of the driving signal to other integrated circuit, wherein the other integrated circuit receiving the synchronization signal receives charges of the touch sensors through the Rx lines in response to the synchronization signal; a first touch recognition module configured to analyze touch raw data received from the first integrated circuit estimate coordinates of touch input positions and output first touch coordinate data; a second touch recognition module configured to analyze touch raw data received from the second integrated circuit, estimate coordinates of touch input positions, and output second touch coordinate data, wherein the first touch recognition module is embedded in the first integrated circuit and the second touch recognition module is embedded in the second integrated circuit; and a data synchronization module configured to synchronize the first touch coordinate data and the second touch coordinate data output respectively from the first touch recognition module and the second touch recognition module, and transmit the synchronized touch coordinate data to a host system.