Patent ID: 7548227

Claim:
A device for driving a display apparatus, the device comprising: a timing circuit including an oscillator which generates a first oscillating signal and an operation circuit which generates a control signal and including a counter that is configured to count a number of pulses of the first oscillating signal to generate a square wave signal; a data driver that is configured to sample a first gray scale voltage signal in response to the control signal, and configured to generate a second gray scale voltage signal to provide to a display panel of the display apparatus, the second gray scale voltage signal having a voltage level substantially equal to a sampled voltage level of the first gray scale voltage signal, the sampled voltage level of the first gray scale voltage signal being synchronized with the control signal; wherein the timing circuit further includes a booster that is configured to boost the first oscillating signal to generate a second oscillating signal, and the operation circuit generates the control signal based on the first and second oscillating signals; and the operation circuit further includes an AND gate that is configured to perform a logical AND operation on the second oscillating signal and the square wave signal to generate the control signal, and the square wave signal is activated in response to every given number of the pulses of the first oscillating signal.