Patent ID: 7078864
Filing Date: 2006-07-18
Classification: G06F,G09G,Y02D

Abstract:
1. A display apparatus comprising: a display panel having a plurality of pixel parts arranged in a matrix, each pixel part including a pixel electrode connected to a data line and a scan line, and a common electrode opposed to said pixel electrode; a data driver for applying a gray scale voltage corresponding to display data to the pixel electrode of the pixel part, via the data line; a gate driver for applying a gate-on voltage and a gate-off voltage to the pixel electrode of the pixel part, via the scan line; and a power supply device for generating a reference voltage for the gray scale voltage, the gate-on voltage and the gate-off voltage, and a common voltage for the common electrode, wherein the power supply device includes a holding circuit for holding an electric charge corresponding to the common voltage, and the gate-off voltage is generated from the electric charge held in the holding circuit.