Patent ID: 7843474

Claim:
A driving apparatus for a liquid crystal display, comprising: a display panel having a plurality of gate lines and a plurality of data lines crossing the gate lines; a data driving circuit for driving the data lines; a timing controller for supplying n-bit picture information (wherein n is an integer) to the data driving circuit; a data controller for logically combining the picture information to generate dummy data and for supplying the dummy data to the data driving circuit; a plurality of tape carrier packages capable of being electrically connected to the display panel and mounted with the data driving circuit, wherein m input channels (wherein m is an integer larger than n) are used to supply the picture information and dummy data to the data driving circuit, wherein the data driving circuit includes a plurality of m-bit data driver integrated circuits, each m-bit data driver integrated circuit receiving the n-bit picture information through n most significant bits input terminals and the dummy data through two least significant bits input terminals and outputting (2 n ) gray levels using the (n+2) bits associated with the (2 n+2 ) gray levels to the data lines, wherein m−2 is n; and at least one AND gate receiving as input the n-bit picture information and outputting the dummy data to the two least significant bits input terminals of the each m-bit data driver integrated circuit, wherein dummy data is data corresponding to the least two significant bits added to the n-bit picture information generated through the use of the AND gate to be compatible with the m-bit data driver integrated circuit.