Patent ID: 9697788
Date: 2017-07-04
CPC Classifications: G09G,G11C

Claim:
1. A liquid crystal display device comprising: a pixel portion; a display control circuit; a selection signal output circuit; a pixel data signal output circuit configured to be supplied with an image signal for displaying an image, generate a pixel data signal in accordance with the inputted image signal, and output the pixel data signal; and a backlight unit including a cold cathode fluorescent lamp as a light source and configured to emit light to the pixel portion, wherein the liquid crystal display device is configured to be driven in a first operation mode and a second operation mode performed after the first operation mode, wherein the display control circuit is configured to control the selection signal output circuit and the pixel data signal output circuit in accordance with a control signal to switch the first operation mode and the second operation mode, wherein the pixel portion comprises: wherein the selection signal output circuit is configured to supply a selection signal to the gate electrode of the transistor so that the transistor turns on, in the first operation mode, wherein the pixel data signal output circuit is configured to supply the pixel data signal to the first electrode through the transistor in the first operation mode, wherein the display control circuit is configured to sequentially stop supply of a start signal, a clock signal and power supply voltage to the selection signal output circuit and the pixel data signal output circuit in this order to stop operations of the selection signal output circuit and the pixel data signal output circuit in the second operation mode, wherein the transistor is configured to remain off during the second operation mode, and wherein the pixel portion is configured to hold the pixel data signal so that the image in accordance with the image signal is displayed during the second operation mode.