Display apparatus

Abstract

A display device has a driver circuit for driving data lines in a matrix display panel according to input digital signals. The driver circuit includes a number of digital-to-analog (D/A) converters, which number is less than the number of pixels contained in one horizontal scanning line. The D/A converters are repeatedly used to sequentially convert portions of the input digital image signal corresponding to one horizontal scanning line. The analog signals obtained by each D/A conversion are retained by a sample-and-hold circuit. When storage for one horizontal scanning line is completed, the signals are simultaneously delivered to the data lines. Therefore the display device can be reduced to a small circuit size. Also the offset voltage of the sample-and-hold circuitry can be reduced, since the outputs from the D/A converters can be sampled at an interval longer than the interval between pixels in the input digital signals.

Dependencies are inferred from the claim text.