发明授权
US07123324B2 Reflector providing particularly high reflectance in an intended viewing angle and reflection type liquid crystal display device using the same
失效
反射器在预期的视角中提供特别高的反射率,并且使用该反射器的反射型液晶显示装置
- 专利标题: Reflector providing particularly high reflectance in an intended viewing angle and reflection type liquid crystal display device using the same
- 专利标题(中): 反射器在预期的视角中提供特别高的反射率,并且使用该反射器的反射型液晶显示装置
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申请号: US10668878申请日: 2003-09-23
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公开(公告)号: US07123324B2公开(公告)日: 2006-10-17
- 发明人: Katsumasa Yoshii , Tatsuya Moriike , Kenji Omote , Mitsuru Kano
- 申请人: Katsumasa Yoshii , Tatsuya Moriike , Kenji Omote , Mitsuru Kano
- 申请人地址: JP Tokyo
- 专利权人: Alps Electric Co., Ltd.
- 当前专利权人: Alps Electric Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Brinks Hofer Gilson & Lione
- 优先权: JP2000-201529 20000703; JP2000-201530 20000703
- 主分类号: G02F1/1335
- IPC分类号: G02F1/1335 ; G02B5/10 ; F21V7/00 ; G01B11/24
摘要:
The present invention provides a reflector having a light-diffusing property which suppresses inter-object reflection over a wide angle, and giving particularly high reflectance in an intended range of viewing angle; and to provide a reflection type liquid crystal display device using the same. The reflector includes a plurality of light-reflective concave portions. Each of the concave portions is formed so that an inclination angle (an angle between a plane tangential to a point on a concave surface and the surface of the base material) is maximum on a side portion of the curved surface, and so that the direction of the side portion having the maximum inclination angle is on a far side from a view point of an observer. Moreover, the reflector includes many concave portions formed on a reflector surface, an inner surface of each of the concave portions including a peripheral curved surface and a bottom curved surface that are continuously connected to each other, the peripheral curved surface being a part of a first sphere having a first radius, the bottom curved surface being a part of a second sphere having a second radius different from the first radius, and the bottom curved surface being located within the peripheral curved surface, wherein the first radius is smaller than the second radius, and a normal line extending from a center of the first sphere to the reflector surface and a normal line extending from a center of the second sphere to the reflector surface are not collinear. Further, the reflection type liquid crystal display device is provided with the reflector.