发明申请
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
- 专利标题: WHITE LED, BACKLIGHT USING THE SAME, AND LIQUID CRYSTAL DISPLAY DEVICE
- 专利标题(中): 白色LED,使用其的背光和液晶显示装置
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申请号: US13407942申请日: 2012-02-29
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公开(公告)号: US20120206671A1公开(公告)日: 2012-08-16
- 发明人: Hajime TAKEUCHI , Ryo Sakai , Tsutomu Ishii , Yasumasa Ooya , Yasuhiro Shirakawa
- 申请人: Hajime TAKEUCHI , Ryo Sakai , Tsutomu Ishii , Yasumasa Ooya , Yasuhiro Shirakawa
- 申请人地址: JP Yokohama-shi JP Minato-ku
- 专利权人: Toshiba Materials Co., Ltd.,Kabushiki Kaisha Toshiba
- 当前专利权人: Toshiba Materials Co., Ltd.,Kabushiki Kaisha Toshiba
- 当前专利权人地址: JP Yokohama-shi JP Minato-ku
- 优先权: JP2009-202899 20090902
- 主分类号: G02F1/13357
- IPC分类号: G02F1/13357
摘要:
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.