Invention Grant
US08125423B2 Voltage control circuit, voltage control method and light control apparatus utilizing the same 失效
电压控制电路,电压控制方法及利用其的光控制装置

  • Patent Title: Voltage control circuit, voltage control method and light control apparatus utilizing the same
  • Patent Title (中): 电压控制电路,电压控制方法及利用其的光控制装置
  • Application No.: US11815661
    Application Date: 2006-02-06
  • Publication No.: US08125423B2
    Publication Date: 2012-02-28
  • Inventor: Takaaki FuchikamiYoshikazu Fujimori
  • Applicant: Takaaki FuchikamiYoshikazu Fujimori
  • Applicant Address: JP
  • Assignee: Rohm Co., Ltd.
  • Current Assignee: Rohm Co., Ltd.
  • Current Assignee Address: JP
  • Agency: Cantor Colburn LLP
  • Priority: JP2005-031033 20050207
  • International Application: PCT/JP2006/302008 WO 20060206
  • International Announcement: WO2006/082972 WO 20060810
  • Main IPC: G09G3/34
  • IPC: G09G3/34
Voltage control circuit, voltage control method and light control apparatus utilizing the same
Abstract:
A voltage control circuit which can prevent the occurrence of imprint phenomenon is provided.In a voltage control circuit which applies voltage to a pair of electrodes including a first and a second electrode, a control unit switches the voltage applied to the pair of electrodes, in response to an operation mode of this circuit.In a normal mode, the control unit fixedly applies a first voltage to the first electrode and applies a data voltage of the first voltage or the second voltage to the second electrode, based on an instruction from the control unit.In an inversion mode, the second voltage is fixedly applied to the first electrode, and the data voltage of the first voltage or second voltage is applied to the second electrode. The control unit switches the mode between the normal mode and the inversion mode, in a predetermined cycle.
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