| 摘要 |
PURPOSE: A circuit for driving a liquid crystal display device is provided to reducing the number of the level shifter circuits by installing at least one level shifter which is less than the number of shift register at prestage, thereby obtaining a design margin to design the source drive integrated circuit. CONSTITUTION: A circuit for driving a liquid crystal display device includes a level converting unit(100), a data shifting unit(200), a data latch unit(300), a digital-to-analog converting unit(400) and a buffer amplifying unit(500). The level converting unit(100) sequentially outputs the level converted data signals. The data shifting unit(200) outputs a plurality of shift data signal after the inputted level converted data signal subsequently shifted with synchronizing to the clock signal. The data latch unit(300) outputs a plurality of latch signals after the plurality of shift data signal is inputted. The digital-to-analog converting unit(400) outputs a plurality of analog signals after the plurality of latch signals is converted into a plurality of analog signal in response to the load signals. And, the buffer amplifying unit(500) outputs a plurality of liquid driving signals by amplifying the plurality of analog signals.
|
