发明名称 |
LIGHT GUIDE ELEMENT, ILLUMINATION DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE |
摘要 |
A light guide element (7) including a light-emitting section (7b) having a light-emitting surface (7a) which allows light emitted from a dot-like light source (6) to produce a surface emission; an light guide section (7c) for guiding the light emitted from the light source (6) to the light-emitting section (7b); and diffusing means (9) for diffusing incident light, wherein the diffusing means (9) is provided in at least part of a region extending from (i) a boundary surface (8) between the light-emitting section (7b) and the light guide section (7c) to (ii) a halfway point between the boundary surface (8) and that end of the light guide section (7c) which is closer to the light source (6). Thus, it is possible to realize: a light guide element which can suppress a decrease in luminance of surface emission and further improve uniformity in luminance of a light-emitting surface as seen from any angle; an illumination device including such an light guide element; and a liquid crystal display device including such an illumination device and thereby having improved display quality.
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申请公布号 |
US2011058125(A1) |
申请公布日期 |
2011.03.10 |
申请号 |
US20090990957 |
申请日期 |
2009.02.20 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
AJICHI YUHSAKU;MASUDA TAKESHI;KOHTOKU YUKIHIDE |
分类号 |
G02F1/1335;F21V7/22 |
主分类号 |
G02F1/1335 |
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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