发明名称 |
Planar light source unit and display device |
摘要 |
A light guide plate has a hologram pattern on a light exit surface. The hologram pattern anisotropically diffuses light in the direction parallel with a light incident surface of the light guide plate. On a back surface of the light guide plate are formed mirror-polished prism structures extending parallel with the light incident surface. A downward-pointing prism sheet with a given prism apex angle is placed on the light exit surface of the light guide plate. The use of the downward-pointing prism sheet together with the light guide plate having the anisotropic diffusion hologram pattern integrally formed thereon produces a liquid crystal display device with enhanced luminance properties.
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申请公布号 |
US6991358(B2) |
申请公布日期 |
2006.01.31 |
申请号 |
US20030649688 |
申请日期 |
2003.08.28 |
申请人 |
ADVANCED DISPLAY INC. |
发明人 |
KOKOGAWA TORU |
分类号 |
F21V7/04;G02B6/00;F21V8/00;F21Y101/02;G02B5/04;G02B5/18;G02F1/1335;G02F1/13357 |
主分类号 |
F21V7/04 |
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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