Patent ID: 8305315

Claim:
A monolithic driver-type display device for providing a gradation display of video, comprising: a first insulating substrate; a display portion including a plurality of scanning signal lines, a plurality of video signal lines crossing the scanning signal lines, and a plurality of display elements arranged in a matrix at their corresponding intersections between the scanning signal lines and the video signal lines; a scanning signal line driver circuit for selectively activating the scanning signal lines; a plurality of switching elements provided in association with a plurality of pieces of bit data contained in externally inputted digital video signals and sampling the digital video signals for each piece of bit data; a sampling signal generation circuit for generating sampling signals for opening/closing the switching elements; a video signal line driver circuitry for amplifying the sampled digital video signals in such a swing as to enable processing, thereafter generating analog video signals by selecting one gradation voltage for each analog video signal from among a group of provided gradation voltages, based on the amplified digital video signals, and outputting the generated analog video signals to the video signal lines; and a plurality of data lines provided between the switching elements and the video signal line driver circuitry, the data lines each having a parasitic capacitance, wherein, at least the display portion and the video signal line driver circuitry are formed on the first insulating substrate, and the switching elements are independently opened/closed based on the sampling signals, thereby performing a sample and hold operation for sampling and outputting the digital video signals for each piece of bit data to the data lines, whereby the outputted digital video signals are held in the parasitic capacitances on the data lines.