Patent ID: 7212196

Claim:
A display device comprising: display pixels disposed in a matrix form to display color images; driving circuits to drive said display pixels; and first, second and third signal lines to connect said display pixels to said driving circuits; wherein said driving circuits include a reference gray scale signal circuit to sequentially provide a predetermined number of reference gray scale signals in accordance with color characteristics of said display pixels when writing operations are carried out on said signal lines during each horizontal scanning period, a digital-to-analog conversion circuit to convert digital video signals supplied to said display pixels in response to said reference gray scale signals to analog signals; and a signal supply circuit to provide said analog signals to said first, second and third signal lines; wherein said signal supply circuit provides said analog signals to said first signal lines as video signals when said reference gray scale signals are supplied in response to said color characteristics of said display pixels and outputs said analog signals to said second and third signal lines as preliminary video signals when said video signals are supplied to said second and third signal lines in each scanning period.