发明名称 |
BACK-LIGHT UNIT |
摘要 |
<p>The present invention provides a light unit, comprising a printed circuit board equipped with a plurality of LEDs; and a light guide member equipped with mounting grooves to house the LEDs. It is preferred that the light guide member comprises one surface and another surface facing the one surface; a first density pattern area and a second density pattern area having higher density than that of the first density pattern area are formed in the one surface; and the second density pattern is disposed in an area closer to the light emitting surface of the LED than the first density pattern area. According to the present invention, hot spots can be removed by forming high density optical patterns on the upper surface of a light guide member and diffusing the light of LEDs; meanwhile, the transmission range of light can be extended and light extraction efficiency can be improved by disposing low density optical patterns in adjacent areas.</p> |
申请公布号 |
EP2638428(A1) |
申请公布日期 |
2013.09.18 |
申请号 |
EP20110840021 |
申请日期 |
2011.07.15 |
申请人 |
LG INNOTEK CO., LTD. |
发明人 |
KIM, JONG SUN;PARK, SANG JUN;AHN, KYOUNG SOO;YOO, KYOUNG JONG;LEE, YONG IN |
分类号 |
G02F1/13357;F21V8/00;G02B6/00;G02F1/1335 |
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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