Organic light-emitting device and display apparatus

Details Organic light-emitting device and display apparatus Organic light-emitting device and display apparatus

2011-03-29

2011-03-29

Williams, Joseph L (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S506000

Reexamination Certificate

active

07915812

ABSTRACT:
Provided are an organic light-emitting device that has wide viewing angle characteristics and enables excellent color reproduction, and a display apparatus including the organic light-emitting device. In the device, an optical path between a first reflective surface formed on the first electrode side with respect to an emission layer and a second reflective surface formed on a second electrode side with respect to the emission layer are set so as to resonate light emitted in the emission layer, and a first region with a relatively short optical path L1and a second region with a relatively long optical path L2are provided, wherein L1and L2are set to satisfy Expression 1 with resonant wavelengths λ1, λ2, and λ3, a sum φt of phase shifts when light is reflected by the first reflective surface and the second reflective surface, and a viewing angle α:in-line-formulae description="In-line Formulae" end="lead"?λ1=2L1/(p−φt/2π)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?λ2=2L2/(q+1−φt/2π)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?λ3=2L2cos α/(q−φt/2π)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?λ1=λ2=λ3  (Expression 1)in-line-formulae description="In-line Formulae" end="tail"?wherein p and q each independently represent a positive integer and α is not 0°.

REFERENCES:
patent: 2005/0280364 (2005-12-01), Omura et al.
patent: 2007/0029539 (2007-02-01), Yashima et al.
patent: 2007/0252520 (2007-11-01), Hasegawa
patent: 2008/0143649 (2008-06-01), Asaki et al.
patent: 2006-032327 (2006-02-01), None
patent: 2007-234581 (2007-09-01), None

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