Invention Grant
US08284123B2 Liquid crystal display apparatus, liquid crystal display apparatus driving circuit, liquid crystal display apparatus source driver, and liquid crystal display apparatus controller 有权
液晶显示装置,液晶显示装置驱动电路,液晶显示装置源驱动器和液晶显示装置控制装置

  • Patent Title: Liquid crystal display apparatus, liquid crystal display apparatus driving circuit, liquid crystal display apparatus source driver, and liquid crystal display apparatus controller
  • Patent Title (中): 液晶显示装置,液晶显示装置驱动电路,液晶显示装置源驱动器和液晶显示装置控制装置
  • Application No.: US12312834
    Application Date: 2007-07-10
  • Publication No.: US08284123B2
    Publication Date: 2012-10-09
  • Inventor: Hiroyuki Higashino
  • Applicant: Hiroyuki Higashino
  • Applicant Address: JP Osaka
  • Assignee: Sharp Kabushiki Kaisha
  • Current Assignee: Sharp Kabushiki Kaisha
  • Current Assignee Address: JP Osaka
  • Agency: Harness, Dickey & Pierce, P.L.C.
  • Priority: JP2006-322630 20061129
  • International Application: PCT/JP2007/063724 WO 20070710
  • International Announcement: WO2008/065773 WO 20080605
  • Main IPC: G09G3/28
  • IPC: G09G3/28 G09G5/00
Liquid crystal display apparatus, liquid crystal display apparatus driving circuit, liquid crystal display apparatus source driver, and liquid crystal display apparatus controller
Abstract:
In one embodiment of the present invention, a liquid crystal display apparatus driving circuit selectively supplies positive polarity gray scale voltages or negative polarity gray scale voltages to video signal lines as video signals. The circuit includes a gray scale voltage generation circuit for generating a gray scale voltage for display; and first and second gray scale voltage adjustment sections included in the circuit, for increasing positive and negative polarity gray scale voltages while maintaining a voltage difference between the positive and negative polarity gray scale voltages and respectively adjust a center potentials of the positive and negative polarity gray scale voltages. This makes it possible to provide the liquid crystal display apparatus driving circuit which can make the center values of the positive and negative polarity gray scale voltages proximate to values which makes it possible to further reduce the flicker phenomenon without changing the gray scale property.
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