Patent ID: 8767021
Filing Date: 2014-07-01
Classification: G02F,G09G

Abstract:
1. A method for driving a liquid crystal display device comprising a plurality of pixels, wherein each of the pixels comprises a light-transmitting pixel portion and a reflective pixel portion, wherein the light-transmitting pixel portion comprises a first pixel transistor whose first terminal is electrically connected to a signal line and whose gate is electrically connected to a scan line, and a first liquid crystal element and a first capacitor which are electrically connected to a second terminal of the first pixel transistor, and wherein the reflective pixel portion comprises a second pixel transistor whose first terminal is electrically connected to the second terminal of the first pixel transistor and whose gate is electrically connected to a selection line, and a second liquid crystal element and a second capacitor which are electrically connected to a second terminal of the second pixel transistor, the method for driving the liquid crystal display device, comprising the steps of: in a first period, turning on the first pixel transistor, turning off the second pixel transistor, and supplying a first image signal to the first liquid crystal element and the first capacitor from the signal line; in a second period, performing display in the light-transmitting pixel portion in response to the first image signal; in a third period, turning on the first pixel transistor, turning on the second pixel transistor, and supplying a signal for black display to the second liquid crystal element and the second capacitor from the signal line in the reflective pixel portion; performing display for a moving image through the first to third periods; in a fourth period, turning on the first pixel transistor, turning on the second pixel transistor, and supplying a second image signal to the first liquid crystal element, the first capacitor, the second liquid crystal element, and the second capacitor from the signal line; in a fifth period, performing display in the reflective pixel portion in response to the second image signal; and performing display for a still image through the fourth and fifth periods.