Patent ID: 8531618
Filing Date: 2013-09-10
Classification: G02F,G09G,H01L

Abstract:
1. A liquid crystal display device comprising: a pixel portion including a plurality of pixels arranged so that at least a first image signal and a second image signal are supplied; a driver circuit including a signal line driver circuit configured to control a signal line selectively and a gate line driver circuit configured to control a gate line selectively; a memory circuit configured to store the first image signal and the second image signal; a comparison circuit configured to compare the first image signal and the second image signal stored in the memory circuit in the pixel and to detect a difference between the first image signal and the second image signal; and a display control circuit configured to control the driver circuit and to read the second image signal in accordance with the difference, wherein the display control circuit is configured to supply the second image signal only to the pixel where the difference is detected, wherein the pixel includes a thin film transistor, wherein a gate of the thin film transistor is electrically connected to the gate line, a first terminal of the thin film transistor is electrically connected to the signal line, and a second terminal of the thin film transistor is electrically connected to a pixel electrode, and wherein the thin film transistor includes a semiconductor layer including an oxide semiconductor.