Invention Application
US20150378465A1 REDUCING FLOATING GROUND EFFECTS IN PIXELATED SELF-CAPACITANCE TOUCH SCREENS 审中-公开
降低自适应自拍触摸屏中的浮动接地效应

  • Patent Title: REDUCING FLOATING GROUND EFFECTS IN PIXELATED SELF-CAPACITANCE TOUCH SCREENS
  • Patent Title (中): 降低自适应自拍触摸屏中的浮动接地效应
  • Application No.: US14318157
    Application Date: 2014-06-27
  • Publication No.: US20150378465A1
    Publication Date: 2015-12-31
  • Inventor: David H.C. SHIHAlbert LIN
  • Applicant: Apple Inc.
  • Main IPC: G06F3/044
  • IPC: G06F3/044
REDUCING FLOATING GROUND EFFECTS IN PIXELATED SELF-CAPACITANCE TOUCH SCREENS
Abstract:
A touch controller is disclosed. In some examples, the touch controller can include sense circuitry configured to be coupled to a first touch pixel and a second touch pixel on a touch sensor panel. In some examples, the sense circuitry can be configured to drive and sense the first touch pixel during a first time period while coupling the second touch pixel to a reference voltage. In some examples, the sense circuitry can be configured to drive and sense the second touch pixel during a second time period while coupling the first touch pixel to the reference voltage. In some examples, the reference voltage can be a system ground of the touch controller. In some examples, the sense circuitry can be configured to drive and sense pluralities of touch pixels in a similar manner.
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