Invention Grant
- Patent Title: White LED and manufacturing method therefor
- Patent Title (中): 白色LED及其制造方法
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Application No.: US11349986Application Date: 2006-02-09
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Publication No.: US07737460B2Publication Date: 2010-06-15
- Inventor: Akira Fujimoto , Koji Asakawa
- Applicant: Akira Fujimoto , Koji Asakawa
- Applicant Address: JP Tokyo
- Assignee: Kabushiki Kaisha Toshiba
- Current Assignee: Kabushiki Kaisha Toshiba
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2005-034581 20050210
- Main IPC: H01L29/74
- IPC: H01L29/74
Abstract:
A white LED includes an LED chip formed on one main surface of a sapphire substrate, the LED chip being formed in a semiconductor stack structure including a light emitting layer and emitting light of a predetermined wavelength, a light extracting film applied on the other main surface of the substrate, the light extracting film being formed of a material having a refractive index within a range of ±5% of a refractive index of the substrate and a surface of the light extracting film that is located on an opposite side to the substrate being processed into a recess and projection shape, and a phosphor member provided on an opposite side of the substrate with respect to the light extracting film, and generating white light as light is incident thereon.
Public/Granted literature
- US20060186424A1 White LED and manufacturing method therefor Public/Granted day:2006-08-24
Information query
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