发明授权
US07470052B2 Light source device, display device using same, and terminal device
有权
光源装置，使用其的显示装置和终端装置
- 专利标题： Light source device, display device using same, and terminal device
- 专利标题（中）： 光源装置，使用其的显示装置和终端装置
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申请号： US11389263申请日： 2006-03-27
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公开(公告)号： US07470052B2公开(公告)日： 2008-12-30
- 发明人: Shinichi Uehara , Masao Imai
- 申请人： Shinichi Uehara , Masao Imai
- 申请人地址： JP Tokyo
- 专利权人： NEC Corporation
- 当前专利权人： NEC Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Sughrue Mion, PLLC
- 优先权： JP2005-091630 20050328
- 主分类号： F21V7/04
- IPC分类号： F21V7/04
摘要：
The light source device of a display device according to the present invention has an optical waveguide, a cone sheet, and a light source disposed along the side surface of the optical waveguide. The light-emitting surface of the optical waveguide is flat, and a tilted surface that is tilted towards the light source with respect to the light-emitting surface is formed on the light-diffusing surface. The cone sheet has a flat plate and a plurality of circular cones arranged two-dimensionally on the light-incident surface of the flat plate. The central axes of the circular cones are parallel to each other. The invention provides a light source device that can be made thin and is capable of increasing the directivity of emitted light in two dimensions.
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