发明名称 |
DISPLAY DEVICE AND METHOD FOR DRIVING THE SAME |
摘要 |
It is an object to provide a display device in which a problem of light leakage from a liquid crystal element in black display is reduced or overcome and the contrast is improved. It is another object to provide a pixel circuit having a function to control a lighting state of a backlight based on each pixel. These objects are achieved by turning off a light-emitting element in display of a black gray scale, and by providing a light-emitting element in each pixel and providing, in a pixel circuit, a function to individually control lighting and non-lighting of the light-emitting element depending on a gray scale to perform display. When a backlight is provided in each pixel, a light-emitting element that is a backlight is turned off when a black gray scale is displayed, whereby reduction in contrast due to light leakage from a liquid crystal element can be prevented. |
申请公布号 |
US2012194749(A1) |
申请公布日期 |
2012.08.02 |
申请号 |
US201213443146 |
申请日期 |
2012.04.10 |
申请人 |
KIMURA HAJIME;YOSHIDA YASUNORI;SHISHIDO HIDEAKI;UMEZAKI ATSUSHI;YANAGISAWA MAKOTO;YAMAZAKI SHUNPEI;SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
KIMURA HAJIME;YOSHIDA YASUNORI;SHISHIDO HIDEAKI;UMEZAKI ATSUSHI;YANAGISAWA MAKOTO;YAMAZAKI SHUNPEI |
分类号 |
H04N5/70;G02F1/13357;G09F13/04 |
主分类号 |
H04N5/70 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|