DRIVING VOLTAGE GENERATION CIRCUIT AND LIQUID CRYSTAL DISPLAY DEVICE BY USING THE SAME

摘要

PURPOSE: A driving voltage generation circuit and a liquid crystal display device by using the same are provided to prevent the deterioration of the image due to the noise by removing the interference generated by the difference between the frequency of the signal to generate the driving voltage and the display frequency. CONSTITUTION: A driving voltage generation circuit includes a boosting driver, a common voltage generation driver and a gate voltage generation driver(200). The boosting driver boosts the voltage in response to a first clock signal applied thereto and to output. The common voltage generation driver generates the common voltage based on the boosted voltage in response to the second clock signal applied thereto. And, the gate voltage generation driver(200) generates a gate voltage including a gate on voltage and a gate off voltage based on the boosted voltage in response to the second clock signal. The first clock signal is synchronized with the common voltage.