Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2007-06-01
2010-10-12
Williams, Joseph L (Department: 2889)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S512000, C313S112000
Reexamination Certificate
active
07812525
ABSTRACT:
A wideband retardation layer (or film) that can perform circular polarizing so that the retardation layer can be formed with an organic light-emitting device to be relatively thin and have a relatively high contrast with no reduction in brightness, and an organic light-emitting device including the retardation layer. The retardation film includes a base and a retardation layer including an alkali oxide layer grown to be inclined on a surface of the base, wherein the alkali oxide layer is disposed by slant-angle depositing alkali oxide on the surface of the base.
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patent: 10-2004-0034374 (2004-04-01), None
patent: 10-2006-0064680 (2006-06-01), None
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Cho Yoon-Hyeung
Choi Jin-Baek
Kim Won-Jong
Kim Yong-Tak
Lee Byoung-Duk
Christie Parker & Hale LLP
Samsung Mobile Display Co., Ltd.
Williams Joseph L
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