Patent ID: 7317440

Claim:
A driver circuit for driving a liquid crystal display device, the driver circuit comprising: a previous data latch that receives at least a portion of display data and outputs the received display data as previous data; a bias control voltage generator that compares current data of the display data with the previous data and generates a control signal, wherein the current data of the display data is generated in response to a data latch signal and the previous data is generated in response to a previous latch clock signal, wherein the data latch signal is generated independently of, and delayed with respect to, the previous latch clock signal, wherein the current data represents a current data value and the previous data represents a previous data value, and wherein the bias control voltage generator computes a mathematical difference between the current data value and the previous data value and generates the control signal based on the computed mathematical difference; and a driver amplifier that receives an input voltage, generates an output voltage, and controls a slew rate in response to the control signal.