Invention Grant
US07935975B2 White LED lamp and backlight using the same, and liquid crystal display device using the backlight
有权
白色LED灯和背光灯使用相同,液晶显示装置使用背光
- Patent Title: White LED lamp and backlight using the same, and liquid crystal display device using the backlight
- Patent Title (中): 白色LED灯和背光灯使用相同,液晶显示装置使用背光
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Application No.: US11992787Application Date: 2006-09-12
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Publication No.: US07935975B2Publication Date: 2011-05-03
- Inventor: Tsutomu Ishii , Yasuhiro Shirakawa , Hajime Takeuchi , Ryo Sakai , Yasumasa Ooya
- Applicant: Tsutomu Ishii , Yasuhiro Shirakawa , Hajime Takeuchi , Ryo Sakai , Yasumasa Ooya
- Applicant Address: JP Tokyo JP Kanagawa-ken
- Assignee: Kabushiki Kaisha Toshiba,Toshiba Materials Co., Ltd.
- Current Assignee: Kabushiki Kaisha Toshiba,Toshiba Materials Co., Ltd.
- Current Assignee Address: JP Tokyo JP Kanagawa-ken
- Agency: Harness, Dickey & Pierce, PLC
- Priority: JP2005-285621 20050929
- International Application: PCT/JP2006/318054 WO 20060912
- International Announcement: WO2007/037120 WO 20070405
- Main IPC: H01L33/00
- IPC: H01L33/00

Abstract:
Disclosed is a white LED lamp using an ultraviolet light emitting LED, which can simultaneously realize a high level of color rendering and a high level of brightness. Included is an LED chip 2 having a luminescence wavelength between 360 nm and 440nm, and a light emitting part excitable upon exposure to light from the LED chip 2 to emit white light and comprising a phosphor, the phosphor including blue, green, and red light emitting phosphors bonded to each other. A phosphor selected from europium-activated halophosphate phosphors and europium-activated aluminate phosphors is used as the blue light emitting phosphor. A gold- and aluminum-activated zinc sulfide phosphor is used as the green light emitting phosphor. A phosphor selected from europium- and samarium-activated lanthanum oxysulfide phosphors and copper- and manganese-activated zinc sulfide phosphors is used as the red light emitting phosphor.
Public/Granted literature
- US20090272985A1 White LED Lamp and Backlight Using the Same, and Liquid Crystal Display Device Using the Backlight Public/Granted day:2009-11-05
Information query
IPC分类: