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DYNAMIC VOLTAGE GENERATION FOR TOUCH-ENABLED DISPLAYS

  • US 20130328824A1
  • Filed: 07/31/2012
  • Published: 12/12/2013
  • Est. Priority Date: 06/08/2012
  • Status: Active Grant
First Claim
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1. A method for providing power for a touch-enabled display, wherein the touch-enabled display cycles between a display mode and a touch mode, the method comprising:

  • during the display mode, driving a display-mode voltage to the touch-enabled display through a power output, wherein the power output is coupled through a display-mode capacitor CD to ground;

    during a transition from the display mode to the touch mode, coupling the power output through a touch-mode capacitor CT to ground, wherein CT was previously charged to a touch-mode voltage, thereby causing the power output to rapidly transition to the touch-mode voltage; and

    during the touch mode, driving the touch-mode voltage through the power output.

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