Active solid-state devices (e.g. – transistors – solid-state diode – Organic semiconductor material
Reexamination Certificate
2008-06-17
2008-06-17
Ho, Tu-Tu (Department: 2818)
Active solid-state devices (e.g., transistors, solid-state diode
Organic semiconductor material
C257S059000, C257S072000, C257S103000, C257S099000, C257SE51019
Reexamination Certificate
active
07388223
ABSTRACT:
An organic light emitting device, and a method of fabricating the same, has a cathode electrode that can prevent oxygen or moisture from infiltrating. The organic light emitting device of the present invention has a lower electrode, an organic thin film layer and an upper electrode successively formed on the substrate. The upper electrode has at least two-layered thin films having different grain density and grain size. A lower film of the at least two-layered thin films of the upper electrode has a first Al thin film having a lower grain density and larger grain size than an upper of the at least two-layered thin films. The upper film has a second Al thin film having relatively higher grain density and smaller grain size than the first Al thin film.
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Chung Ho-kyoon
Park Jin-woo
Ho Tu-Tu
Samsung SDI & Co., Ltd.
Stein, McEwen & Bui LLP
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