发明名称 |
Liquid crystal display device |
摘要 |
The present invention enables a liquid crystal display device using LEDs as a light source to reduce uneven brightness, increase efficiency of heat discharged from the LEDs, and provide area brightness control. The liquid crystal display device includes a liquid crystal display panel and a backlight. The backlight includes a light guide panel and a plurality of LEDs arranged on a line. The light guide panel includes a concave portion extending in a longitudinal direction of the light guide panel. A large number of LEDs are placed in the concave portion of the light guide panel. The plurality of LEDs arranged on a line emit light alternately in opposite directions. This configuration allows for uniform brightness distribution without forming a large number of concave portions in the light guide panel. Further, this configuration also allows for area brightness control by controlling a large number of LEDs by group. |
申请公布号 |
EP2367049(A3) |
申请公布日期 |
2011.11.23 |
申请号 |
EP20100014086 |
申请日期 |
2010.10.28 |
申请人 |
HITACHI CONSUMER ELECTRONICS CO. LTD. |
发明人 |
KUBOTA, HIDENAO;IWASA, HIROSHI;SAKITA, KOICHI |
分类号 |
G02F1/13357;G02B6/00 |
主分类号 |
G02F1/13357 |
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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