Invention Grant
- Patent Title: White light emitting device, backlight, liquid crystal display device, and illuminating device
- Patent Title (中): 白光发光装置,背光源,液晶显示装置及照明装置
-
Application No.: US12988330Application Date: 2009-04-15
-
Publication No.: US08598618B2Publication Date: 2013-12-03
- Inventor: Tsutomu Ishii , Hajime Takeuchi , Ryo Sakai , Yasumasa Ooya , Yasuhiro Shirakawa
- Applicant: Tsutomu Ishii , Hajime Takeuchi , Ryo Sakai , Yasumasa Ooya , Yasuhiro Shirakawa
- 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: JP2008-107973 20080417
- International Application: PCT/JP2009/057561 WO 20090415
- International Announcement: WO2009/128468 WO 20091022
- Main IPC: H01L33/00
- IPC: H01L33/00

Abstract:
A white light emitting device includes a blue light emitting diode chip that emits blue light in a specific wavelength band, a first resin layer that seals the blue light emitting diode chip and includes a cured product of silicone resin, and a second resin layer that covers the first resin layer and includes phosphor powder, which absorbs the blue light and emits light in a specific wavelength band, and a cured product of transparent resin. The phosphor powder has a composition represented by the following Formula (1): (Sr1-x-yBaxEuy)2SiO4 (1) (in Formula (1), x and y satisfy a condition that 0.05
Public/Granted literature
- US20110031523A1 WHITE LIGHT EMITTING DEVICE, BACKLIGHT, LIQUID CRYSTAL DISPLAY DEVICE, AND ILLUMINATING DEVICE Public/Granted day:2011-02-10
Information query
IPC分类: