发明名称 |
White LED lamp and backlight using the same, and liquid crystal display device using the backlight |
摘要 |
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.
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申请公布号 |
US7935975(B2) |
申请公布日期 |
2011.05.03 |
申请号 |
US20060992787 |
申请日期 |
2006.09.12 |
申请人 |
KABUSHIKI KAISHA TOSHIBA;TOSHIBA MATERIALS CO., LTD. |
发明人 |
ISHII TSUTOMU;SHIRAKAWA YASUHIRO;TAKEUCHI HAJIME;SAKAI RYO;OOYA YASUMASA |
分类号 |
H01L33/00;H01L33/50;H01L33/60 |
主分类号 |
H01L33/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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