发明名称 |
Front-illuminating device and a reflection-type liquid crystal display using such a device |
摘要 |
Featured are a front-illuminating device including a light source and first and second light-directing bodies. The first light-directing body is disposed in front of an object to be illuminated and has a first light-releasing surface from which light is released to the object to be illuminated and a second light-releasing surface, placed face to face with the first light-releasing surface, for releasing light reflected from the object to be illuminated. The second light-releasing surface also is formed into a step shape and includes slanting portions that reflect light mainly from the light source toward the first light-releasing surface. The second light-directing body is disposed between the first light-directing body and the object to be illuminated and is configured and arranged so a distance from each of the slanting portions to the surface of the second light-directing body second surface is essentially uniform.
|
申请公布号 |
US6879354(B1) |
申请公布日期 |
2005.04.12 |
申请号 |
US19990394327 |
申请日期 |
1999.09.13 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
SAWAYAMA YUTAKA;SUMIDA YUKIHIRO;MASUDA TAKESHI;EBI TSUYOSHI |
分类号 |
F21V8/00;G02B6/00;G02F1/1335;G02F1/13357;(IPC1-7):G02F1/133 |
主分类号 |
F21V8/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|