Invention Grant
- Patent Title: Organic electroluminescence device
- Patent Title (中): 有机电致发光器件
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Application No.: US12675101Application Date: 2008-08-28
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Publication No.: US08357930B2Publication Date: 2013-01-22
- Inventor: Nobuhiro Ide , Masahito Yamana , Hiroya Tsuji , Norihiro Ito , Yoshio Mitsutake , Masahiro Nakamura , Takeyuki Yamaki
- Applicant: Nobuhiro Ide , Masahito Yamana , Hiroya Tsuji , Norihiro Ito , Yoshio Mitsutake , Masahiro Nakamura , Takeyuki Yamaki
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Cheng Law Group, PLLC
- Priority: JP2007-221845 20070828
- International Application: PCT/JP2008/065431 WO 20080828
- International Announcement: WO2009/028620 WO 20090305
- Main IPC: H01L35/24
- IPC: H01L35/24

Abstract:
An organic electroluminescence device comprises a light transmissive substrate, a light scattering region which is disposed on the light transmissive substrate, and a light emissive layer having a luminescent point. The luminescent point is spaced from the light reflective electrode by a distance of d which satisfies the following equation: nd = a × λ 4 ( 2 + ϕ π ) wherein ϕ = tan - 1 { 2 ( n 1 k 2 - n 2 k 1 ) n 1 2 - n 2 2 + k 1 2 - k 2 2 } . λ is a wavelength of a specific light emitted from said light emissive layer. n is a refractive index of a layer disposed between the luminescent point of the light emissive layer and the light reflective electrode, with respect to the wavelength of λ. n1 and k1 are respectively a refractive index and an attenuation coefficient of the layer disposed between the luminescent point of the light emissive layer and the light reflective electrode, and is in contact with said light reflective electrode, with respect to the wavelength of λ. n2 and k2 are respectively a refractive index and an attenuation coefficient of the light reflective electrode, with respect to the wavelength of λ. a is a value that satisfies a relation of “1.28
Public/Granted literature
- US20110121267A1 ORGANIC ELECTROLUMINESCENCE DEVICE Public/Granted day:2011-05-26
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