Invention Grant
- Patent Title: White light-emitting device and manufacturing method thereof, and backlight and liquid crystal display device using the same
- Patent Title (中): 白色发光装置及其制造方法以及使用其的背光源和液晶显示装置
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Application No.: US12088701Application Date: 2006-09-28
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Publication No.: US07936418B2Publication Date: 2011-05-03
- Inventor: Tsutomu Ishii , Yasuhiro Shirakawa , Hajime Takeuchi , Yasumasa Ooya , Ryo Sakai
- Applicant: Tsutomu Ishii , Yasuhiro Shirakawa , Hajime Takeuchi , Yasumasa Ooya , Ryo Sakai
- Applicant Address: JP Tokyo JP Yokohama-shi
- Assignee: Kabushiki Kaisha Toshiba,Toshiba Materials Co., Ltd.
- Current Assignee: Kabushiki Kaisha Toshiba,Toshiba Materials Co., Ltd.
- Current Assignee Address: JP Tokyo JP Yokohama-shi
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2005-285623 20050929
- International Application: PCT/JP2006/319353 WO 20060928
- International Announcement: WO2007/037339 WO 20070405
- Main IPC: G02F1/1335
- IPC: G02F1/1335 ; F21V7/04 ; G09F13/04

Abstract:
A white light-emitting device 1 includes a semiconductor light-emitting element 2 emitting ultraviolet light or violet light, and a light-emitting unit 10 which includes three or more kinds of visible light-emitting phosphors 9 and emits white light when excited by the light from the semiconductor light-emitting element 2. The emission spectrum of the light-emitting unit 10 has peaks in a blue region of not less than 440 nm nor more than 460 nm, a green region of not less than 510 nm nor more than 530 nm, and a red region of not less than 620 nm nor more than 640 nm, and the three or more kinds of visible light-emitting phosphors 9 are bound together with a binder in advance.
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