发明名称 |
Display device and method for driving the same |
摘要 |
<p>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.</p> |
申请公布号 |
EP1845514(B1) |
申请公布日期 |
2013.10.02 |
申请号 |
EP20070006970 |
申请日期 |
2007.04.03 |
申请人 |
SEMICONDUCTOR ENERGY LABORATORY CO., LTD. |
发明人 |
KIMURA, HAJIME;YOSHIDA, YASUNORI;SHISHIDO, HIDEAKI;UMEZAKI, ATSUSHI;YANAGISAWA, MAKOTO;YAMAZAKI, SHUNPEI |
分类号 |
G09G3/36;G09G3/32 |
主分类号 |
G09G3/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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