Pixel driver circuit for liquid crystal display or electroluminescent display

摘要

A digital image signal is serially transferred to each of pixels through a drain signal line (2). The digital image signal is sampled at pixel selecting transistors (ST0-ST3), converted from a serial signal to a parallel signal, and then converted to an analog image signal by a DA converter. This DA converter includes a plurality of capacitor electrodes (41-44) coupled to a pixel electrode (19) at a weighted capacitance ratio and a clock supplying portion (ST0-ST3) for supplying periodic clock signals to the plurality of the capacitor electrodes (41-44) in response to the digital image signal. The analog image signal is applied to the pixel electrode (19). This simplifies a configuration of peripheral circuits of the pixel, and accordingly reduces the frame area of a panel and the number of wiring lines.