Patent ID: 7173597
Filing Date: 2007-02-06
Classification: G09G

Abstract:
1. An LCD control unit for driving an LCD panel in an LCD device, said LCD control unit, comprising: a signal controller for generating a voltage address signal and a polarity control signal; a voltage generator block, directly coupled to said signal controller, for internally generating a plurality of (n) γ-voltage levels and a plurality of (m) Vcom-voltage levels, said voltage generator block including a voltage selecting block, wherein output of said voltage generating block is selected by said voltage selecting block from said plurality of (n) γ-voltage levels and said plurality of (in) Vcom-voltage levels according to a value of said voltage address signal input to said voltage generator block; an impedance converter block, coupled to said signal controller and coupled to and separate from said voltage generator block, that converts input impedances of the γ-voltage levels and the Vcom-voltage levels provided by said voltage generator block and provides as output a specified number of said γ-correction voltages and said Vcom voltage according to a value of said polarity control signal; and an LCD driver for generating a set of display data signals based on a set of external data signals, wherein said LCD driver receives said specified number of said γ-correction voltages output from said impedance converter and includes a γ-correction section for correcting voltages of said display data signals based on said specified number of said γ-correction voltages.