Invention Application
US20160162119A1 DISPLAY TO TOUCH CROSSTALK COMPENSATION 审中-公开
显示触摸CROSSTALK补偿

  • Patent Title: DISPLAY TO TOUCH CROSSTALK COMPENSATION
  • Patent Title (中): 显示触摸CROSSTALK补偿
  • Application No.: US15040928
    Application Date: 2016-02-10
  • Publication No.: US20160162119A1
    Publication Date: 2016-06-09
  • Inventor: Christoph H. KRAH
  • Applicant: Apple Inc.
  • Main IPC: G06F3/041
  • IPC: G06F3/041
DISPLAY TO TOUCH CROSSTALK COMPENSATION
Abstract:
A touch sensitive display capable of compensating for crosstalk in the display is disclosed. Crosstalk in display components can be reduced, eliminated, or otherwise compensated for by reducing or eliminating parasitic capacitances that cause the crosstalk. To do so, gate voltages to the display components, such as thin film transistors (TFTs), that introduce the parasitic capacitances can be reduced or otherwise adjusted. In one approach, the gate voltage can be set at multiple different low levels to generate respective sets of touch signals having different amounts of crosstalk. The different crosstalk amounts can then be used to determine and compensate for the crosstalk in the touch signals. In another approach, gate voltage can be modulated between multiple different low levels to push crosstalk out of band with the generated touch signals. The out-of-band crosstalk can then be used to compensate for the crosstalk in the touch signals.
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