Patent ID: 6256005
Filing Date: 2001-07-03
Classification: G09G

Abstract:
A driving voltage supply circuit for a liquid crystal display(LCD) panel, comprising:first and second input means for separating and processing three color signal data into an (2n+1)th data and a (2n)th data and outputting the processed data in accordance with a control signal, wherein n is an integer greater than 0 such that the first and second input means each process half the three color signal data;a divider means for dividing a clock signal operating the first and second input means;a shift register means connected to the divider means for controlling a transmission of color signal data from the first and second input means by concurrently outputting a first plurality of control signals and a second plurality of control signals in accordance with a shift register start pulse signal sequentially shifted through n-number of shift registers and the divided clock signal;a latch means connected to the first and second input means and the shift register means for concurrently holding data from the first and second input means in accordance with the shift register start pulse signal and the first and second plurality of control signals from the shift register means until the next color signal data is inputted, wherein the latch means has a first set of terminals connected to the first input means and a second set of terminals connected to the second input means;a digital/analog conversion means for converting the color signal data from the latch means into an analog signal; andan output buffer means for buffering an output signal from the digital/analog conversion means to a predetermined level for being outputted to the LCD panel.