Driving method of liquid crystal display device
View Patent ↗Under a normal environment, when red, green and blue displays are to be performed, the displays are performed singly by a red pixel, a green pixel and a blue pixel respectively, and under a high-illuminance environment, when the red display is to be performed, the display is performed by also shining the pixels other than the red pixel simultaneously, when the green display is to be performed, the display is performed by also shining the pixels other than the green pixel simultaneously, and when the blue display is to be performed, the display is performed by also shining the pixels other than the blue pixel simultaneously, thereby increasing the luminance of a screen. In this case, although the chromaticity of each color is lowered, since the luminance works more predominantly on the image quality under the high-illuminance environment than the chromaticity, image quality degradation does not occur.
1. A driving method of liquid crystal display device, comprising:
a liquid crystal display panel in which a TFT substrate on which pixels having pixel electrodes and TFTs are arranged in a matrix and a counter substrate are arranged in opposition to each other, a liquid crystal is nipped and held between the TFT substrate and the counter substrate and on which an IC driver is loaded,
wherein the pixels include a red pixel (R), a green pixel (G) and a blue pixel (B),
the driving method comprises a first mode and a second mode,
under the first mode, when red, green and blue displays are to be performed, the red, green and blue displays are performed singly by the red pixel (R), the green pixel (G) and the blue pixel (B) respectively,
under the second mode, when the red display is to be performed, the red display is performed by shining the pixels other than the red pixel (R) simultaneously with shining of the red pixel, when the green display is to be performed, the green display is performed by shining the pixels other than the green pixel (G) simultaneously with shining of the green pixel, and when the blue display is to be performed, the blue display is performed by shining the pixels other than the blue pixel (B) simultaneously with shining of the blue pixel.
2. The driving method of liquid crystal display device according to claim 1 , wherein when the red display is performed, the green pixel (G) is shined simultaneously with shining of the red pixel (R), when the green display is performed, the red pixel (R) and the blue pixel (B) are shined simultaneously with shining of the green pixel, and when the blue display is performed, the green pixel (G) is shined simultaneously with shining of the blue pixel (B).
3. The driving method of liquid crystal display device according to claim 2 , wherein a sensor for sensing an illuminance of outdoor light is loaded on the liquid crystal display device, and a driving method under the first mode and a driving method under the second mode are switched on the basis of the illuminance measured by the sensor.
4. The driving method of liquid crystal display device according to claim 1 , wherein the second mode is higher in outdoor light illuminance than the first mode.
5. A driving method of liquid crystal display device, comprising:
a liquid crystal display panel in which a TFT substrate on which pixels having pixel electrodes and TFTs are arranged in a matrix and a counter substrate are arranged in opposition to each other, a liquid crystal is nipped and held between the TFT substrate and the counter substrate and on which an IC driver is loaded,
wherein the pixels include a red pixel (R), a green pixel (G) and a blue pixel (B),
the driving method comprises a first mode and a second mode,
under the first mode, when red, green and blue displays are to be performed, image signal data input into the liquid crystal display panel is used,
under the second mode, an image signal input into the liquid crystal display panel is converted to form new luminance data and chromaticity data,
under the second mode, when the red display is to be performed, the red display is performed by shining the pixels other than the red pixel (R) simultaneously with shining of the red pixel, when the green display is to be performed, the green display is performed by shining the pixels other than the green pixel (G) simultaneously with shining of the green pixel, and when the blue display is to be performed, the blue display is performed by shining the pixels other than the blue pixel (G) simultaneously with shining of the blue pixel.
6. The driving method of liquid crystal display device according to claim 5 , wherein a measure for converting the image signal input into the liquid crystal display panel to form the new luminance data and the chromaticity data is included in the IC driver.
7. The driving method of liquid crystal display device according to claim 6 , wherein when the red display is performed, the green pixel (G) is shined simultaneously with shining of the red pixel, when the green display is performed, the red pixel (R) and the blue pixel (B) are shined simultaneously with shining of the green pixel, and when blue is to be displayed, the green pixel (G) is shined simultaneously with shining of the blue pixel.
8. The driving method of liquid crystal display device according to claim 7 , wherein a sensor for sensing an illuminance of outdoor light is loaded on the liquid crystal display device, and a driving method under the first mode and a driving method under the second mode are switched on the basis of the illuminance measured by the sensor.
9. The driving method of liquid crystal display device according to claim 5 , wherein the second mode is higher in outdoor light illuminance than the first mode.