Patent ID: 6310600
Filing Date: 2001-10-30
Classification: G09G

Abstract:
An active matrix type device comprising:a pixel matrix;a refresh pulse generating circuit;a data comparison circuit which compares display data of continuous first and second frames in a same pixel of the pixel matrix and which sends a signal to the refresh pulse generating circuit when the display data of the continuous first and second frames in the same pixel are different from each other, the second frame subsequent to the first frame; anda plurality of thin film transistors each provided in a corresponding pixel and connected to a corresponding gate line at a gate electrode thereof,wherein a first refresh pulse is generated in the refresh pulse generating circuit to apply a gate pulse to the gate line of the same pixel when the display data of the continuous first and second frames in the same pixel are different from each other to rewrite the same pixel from the display data of the first frame to the display data of the second frame,wherein the refresh pulse generating circuit divides all of rows of the pixel matrix into N groups each consisting of m rows,wherein a second regular refresh pulse is generated in the refresh pulse generating circuit to apply a scanning signal to a gate electrode of the thin film transistor provided in a k-th row of each group in a k-th frame where k=1, 2, 3, . . . , m, andwherein the k-th row is forcibly rewritten in the k-th frame by the scanning signal.