Patent ID: 6727874
Filing Date: 2004-04-27
Classification: G09G

Abstract:
A driving circuit of a color liquid crystal display comprising:a data electrode driving circuit to drive said color liquid crystal display by using a gray scale voltage selected based on a video signal out of a plurality of gray scale voltages; wherein said data electrode driving circuit produces a plurality of said gray scale voltages corresponding to a gray scale voltage characteristic based on digital gray scale voltage setting data to be supplied; wherein said control circuit is mounted on a printed circuit board attached to an upper portion of a rear of a backlight placed on a rear of said color liquid crystal display and wherein said data electrode driving circuit includes a plurality of data electrode driving sections to provide gray scales by making said gamma correction to said red data, said green data, and said blue data each being corresponding to each of data electrodes of said color liquid crystal display, out of said red data, said green data, and said blue data and converts said gamma-corrected red data, said gamma-corrected green data, and said gamma-corrected blue data into an analog data red signal, an analog data green signal, and an analog data blue signal, such that said analog data red signal, said analog data green signal, and said analog data blue signal are output; and wherein each of said plurality of said data electrode driving sections is mounted on a corresponding film carrier tape connecting said printed circuit board to said color liquid crystal display.