Patent ID: 8094107

Claim:
A liquid crystal display (LCD) data driver integrated circuit, comprising: a grayscale voltage generating circuit configured to generate a plurality of grayscale voltages from a set of supply reference voltages; a plurality of connection terminals corresponding in number to said plurality of grayscale voltages; and a converting section connected to said connection terminals and configured to drive each of a plurality of data lines of a liquid crystal display panel through one of said connection terminals based on one of said plurality of grayscale voltages which is determined based on an input data, when each of a plurality of scanning lines of the liquid crystal display panel is driven, wherein said grayscale voltage generating circuit comprises: a resistance circuit having resistances connected in series; and a plurality of voltage buffers connected to said resistance circuit to bias said resistance circuit, and wherein, when said LCD data driver integrated circuit comprises a first LCD data driver integrated circuit used in an LCD apparatus to drive a first portion of the display of the LCD apparatus and a second LCD data driver integrated circuit, similar to said first LCD data driver integrated circuit, is used to drive a second portion of the display, non-inversion input terminals of said plurality of voltage buffers in said first LCD data driver integrated circuit are connected in common to non-inversion terminals of corresponding ones of said plurality of voltage buffers in said second LCD data driver integrated circuit, and at least a portion of said connection terminals in said first LCD data driver integrated circuit and a corresponding portion of said connection terminals in said second LCD data driver integrated circuit are connected to each other.