Invention Application
US20120206671A1 WHITE LED, BACKLIGHT USING THE SAME, AND LIQUID CRYSTAL DISPLAY DEVICE
有权
白色LED,使用其的背光和液晶显示装置
- Patent Title: WHITE LED, BACKLIGHT USING THE SAME, AND LIQUID CRYSTAL DISPLAY DEVICE
- Patent Title (中): 白色LED,使用其的背光和液晶显示装置
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Application No.: US13407942Application Date: 2012-02-29
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Publication No.: US20120206671A1Publication Date: 2012-08-16
- Inventor: Hajime TAKEUCHI , Ryo Sakai , Tsutomu Ishii , Yasumasa Ooya , Yasuhiro Shirakawa
- Applicant: Hajime TAKEUCHI , Ryo Sakai , Tsutomu Ishii , Yasumasa Ooya , Yasuhiro Shirakawa
- Applicant Address: JP Yokohama-shi JP Minato-ku
- Assignee: Toshiba Materials Co., Ltd.,Kabushiki Kaisha Toshiba
- Current Assignee: Toshiba Materials Co., Ltd.,Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Yokohama-shi JP Minato-ku
- Priority: JP2009-202899 20090902
- Main IPC: G02F1/13357
- IPC: G02F1/13357

Abstract:
Certain embodiments provide a white LED for a backlight of a liquid crystal display device, which comprises an ultraviolet (or violet) light emitting element and a phosphor layer that contains a green phosphor selected from trivalent cerium- and terbium-activated rare earth borate phosphors, a blue phosphor selected from divalent europium-activated halophosphate phosphors and divalent europium-activated aluminate phosphors, and a red phosphor selected from europium-activated lanthanum oxysulfide phosphors and europium-activated yttrium oxysulfide phosphors as the contained amounts of the respective phosphors relative to the total amount of the phosphors as follows: 35-50% by weight of the green phosphor content; 50-70% by weight of the blue phosphor content; and 1-10% by weight of the red phosphor content.
Public/Granted literature
- US08872421B2 White LED, backlight using the same, and liquid crystal display device Public/Granted day:2014-10-28
Information query
IPC分类: