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Driving apparatus for an electrode matrix suitable for a liquid crystal panel

  • US 5,066,945 A
  • Filed: 10/25/1988
  • Issued: 11/19/1991
  • Est. Priority Date: 10/26/1987
  • Status: Expired due to Term
First Claim
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1. A driving apparatus, comprising:

  • a) a driving unit including a scanning electrode driver and a data electrode driver for driving an electrode matrix formed of scanning electrodes and data electrodes, andb) a drive voltage generating unit including a first means for generating a fixed voltage, a second means for generating a source voltage for providing drive voltages for driving the electrode matrix, and a third means for generating a first voltage equal to a subtraction of the fixed voltage from the source voltage and a second voltage equal to a subtraction of the source voltage from the fixed voltage,wherein the first voltage and the second voltage are of mutually opposite polarities with respect to the fixed voltage, and the fixed voltage is a voltage set to an intermediate value between a maximum output voltage and a minimum output voltage of the drive voltage generating unit.

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