| 摘要 |
PURPOSE: A liquid crystal driving device with reduced electromagnetic interference is provided to restrain the generation of electric fields and magnetic fields by the mechanism which alternatively drives all source lines by clocks having a single or dual edge. CONSTITUTION: A liquid crystal driving device with reduced electromagnetic interference includes a graphic controller for outputting basic timing signals required for displaying images in response to image signals processed from a host system, a timing controller for outputting control signals for driving a driver in response to the timing signals, a gray voltage generating part for outputting a gray voltage in equal division in response to one of the control signals output from the timing controller, a gate driver for turning on gates of a TFT(Thin Film Transistor) for transmitting data to pixels in response to the control signals, and a source driver for storing digital data to shift registers and selecting and outputting corresponding voltages to the data in response to the control signals, wherein the timing controller generates a horizontal clock signal of first or second variable frequency in response to a master clock input to the graphic controller, and the source driver alternately outputs color data respectively synchronized with a single edge and a dual edge to liquid crystal display panels in response to the horizontal clock signals.
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