Patent ID: 7375709
Filing Date: 2008-05-20
Classification: G09G

Abstract:
1. A display driver which drives a plurality of data signal supply lines of an electro-optical device which includes a plurality of pixels, a plurality of scanning lines, a plurality of data lines, the plurality of data signal supply lines, and a plurality of demultiplexers, the plurality of data lines including a plurality of data line groups, each of the plurality of data line groups consisting of 3×N numbers of the data lines (N is a natural number), each of the plurality of data signal supply lines transmitting multiplexed data in which N sets of data signals for first to third color components are multiplexed, and each of the plurality of demultiplexers demultiplexing the multiplexed data and outputting one of the data signals for the first to third color components to each of the 3×N numbers of data lines, the display driver comprising: a gray-scale bus to which gray-scale data for one of the first to third color components is supplied; N numbers of first data latches holding first gray-scale data and belonging to one of first to N-th groups, an N-th first data latch holding the first gray-scale data based on an N-th clock signal, N numbers of second data latches holding second gray-scale data and belonging to one of the first to N-th groups; an N-th second data latch holding the second gray-scale data based on a 2N-th clock signal, a multiplexer which generates first multiplexed data in which N set of the first gray-scale data held in the N numbers of first data latches is multiplexed and second multiplexed data in which N sets of the second gray-scale data held in the N numbers of second data latches are multiplexed; and a data-signal-supply-line driver circuit in which a plurality of data output sections are disposed, each of the data output sections outputting a data signal corresponding to the first or second multiplexed data to one of the plurality of data signal supply lines.