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TOUCH SCREEN CONTROLLER TO GENERATE SINGLE-ENDED TOUCH SIGNAL, AND TOUCH SCREEN SYSTEM AND DISPLAY APPARATUS INCLUDING THE SAME

  • US 20150138145A1
  • Filed: 11/04/2014
  • Published: 05/21/2015
  • Est. Priority Date: 11/20/2013
  • Status: Abandoned Application
First Claim
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1. A touch screen controller comprising:

  • a touch data generator that supplies a first transmission signal to a first sensing line, supplies a second transmission signal to a second sensing line adjacent to the first sensing line, receives differential touch signals from the first and second sensing lines, and performs an arithmetic operation on the differential touch signals to generate a single-ended touch signal; and

    a control logic that calculates touch coordinates by using the single-ended touch signal from the touch data generator,wherein at least one of phases and frequencies of the first and second transmission signals has a different value from the other one thereof, andthe touch data generator comprises a transmission signal generator to generate the first and second transmission signals having the same frequency and different phases.

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