×

DISPLAY APPARATUS

  • US 20120262384A1
  • Filed: 11/07/2011
  • Published: 10/18/2012
  • Est. Priority Date: 04/18/2011
  • Status: Active Grant
First Claim
Patent Images

1. A display apparatus comprising:

  • a display panel comprising a plurality of pixels to display frames and sub frames, the frames comprising a previous frame, a present frame and a next frame, and the sub frames comprising a first sub frame and a second sub frame, wherein the pixels receive data voltages of the previous frame during the first sub-frame of the present frame to hold a previous image and to receive data voltages of the present frame during the second sub-frame of the present frame to display a present image;

    a plurality of sensors configured to detect touch event on the display panel and to output sensing signals;

    a scan driver comprising a plurality of stages to output a plurality of scan signals to switch the sensors, the scan driver configured to drive a first scan block among the output stages during the first sub-frame and to drive a second scan block among the stages during the second sub-frame;

    a readout circuit configured to read out the output sensing signals; and

    a control circuit configured to generate a noise free signal using a first sensing signal read out during the first sub-frame and a second sensing signal read out during the second sub-frame and to generate a coordinate value to indicate the position of the object on the display panel based on the noise free signal.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×