Patent ID: 7683874

Claim:
A liquid crystal display device comprising: a liquid crystal display panel; a first liquid crystal drive circuit; and a first image signal line, a first clock signal line, a second image signal line, and a second clock signal line formed on the liquid crystal display panel, wherein the first liquid crystal drive circuit comprises an image signal input terminal connected with the first image signal line, a clock input terminal connected with the first clock signal line, an image signal output terminal connected with the second image signal line, and a clock output terminal connected with the second clock signal line, wherein the first liquid crystal drive circuit comprises a compensation circuit compensating for a duty ratio deviation of a clock received from the clock input terminal, and generating an internal clock signal based on the received clock, the internal clock signal swinging from a first voltage to a second voltage lower than the first voltage, a data accept/processing circuit selecting digital image data received from the image signal input terminal at a timing of a voltage change from the first voltage to the second voltage of the internal clock signal as a first digital image data, and at a timing of a voltage change from the second voltage to the first voltage as a second digital image data; a first internal data bus transmitting the first digital image data from the data accept/processing circuit, a second internal data bus transmitting the second digital image data from the data accept/processing circuit, an image signal output circuit outputting the first digital image data and the second digital image data to the image signal output terminal, a clock signal output circuit delaying the internal clock signal and outputting the delayed clock signal to the clock output terminal, wherein the data accept/processing circuit comprises a first operational circuit processing the digital image data received from the image signal input terminal in accordance with a data inversion signal received from outside of the first liquid crystal drive circuit, and wherein the image signal output circuit comprises a second operational circuit processing the first digital image data and the second digital image data in accordance with the data inversion signal.