发明申请
- 专利标题： BACKLIGHT DEVICE AND LIQUID CRYSTAL DISPLAY APPARATUS
- 专利标题（中）： 背光装置和液晶显示装置
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申请号： US13641052申请日： 2011-04-14
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公开(公告)号： US20130033901A1公开(公告)日： 2013-02-07
- 发明人: Rena Nishitani , Tomohiro Sasagawa , Eiji Niikura , Kuniko Kojima , Jun Someya , Hiroaki Sugiura , Kazuhiko Tsutsumi , Akihiro Nagase
- 申请人： Rena Nishitani , Tomohiro Sasagawa , Eiji Niikura , Kuniko Kojima , Jun Someya , Hiroaki Sugiura , Kazuhiko Tsutsumi , Akihiro Nagase
- 申请人地址： JP Tokyo
- 专利权人： MITSUBISHI ELECTRIC CORPORATION
- 当前专利权人： MITSUBISHI ELECTRIC CORPORATION
- 当前专利权人地址： JP Tokyo
- 优先权： JP2010-093973 20100415; JP2010-099827 20100423; JP2010-177713 20100806
- 国际申请： PCT/JP2011/002209 WO 20110414
- 主分类号： G02F1/13357
- IPC分类号： G02F1/13357 ; F21V8/00 ; G09F13/04
摘要：
A planar light source device includes a first light source for emitting a first light ray having a punctate spatial luminance distribution; a second light source for emitting a second light ray; a first spatial luminance distribution conversion portion for changing the first light ray to a linear spatial luminance distribution; a second spatial luminance distribution conversion portion for changing a spatial luminance distribution of the first and second light rays to a planar spatial luminance distribution; wherein the first light ray is a laser light; the second light ray has a divergence angle larger than the divergence angle of the first light ray when the first light ray is emitted from the first light source; and a slow-axis direction of the first light ray entering the second spatial luminance distribution conversion portion is parallel to an outgoing direction of the planar light.
公开/授权文献
- US08783932B2 Backlight device and liquid crystal display apparatus 公开/授权日：2014-07-22