Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2004-11-23
2009-10-20
Guharay, Karabi (Department: 2889)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S504000
Reexamination Certificate
active
07605534
ABSTRACT:
It is an object of the invention is to provide a light-emitting element in which failure of the light-emitting element due to separation can be controlled and stable luminescence can be obtained with high-efficiency and for a long stretch of time by controlling separation of layers constituting the light-emitting element. According to one aspect of a light-emitting element of the invention, the light-emitting element sandwiches a plurality of layers between a pair of electrodes, wherein at least one layer of the plurality of layers is a layer containing a substance selected from bismuth oxide, cobalt oxide, chromium oxide, copper oxide, nickel oxide, and titanium oxide, or at least one layer of layers different from a light-emitting layer among the plurality of layers is a mixed region of one substance selected from bismuth oxide, cobalt oxide, copper oxide, magnesium oxide, nickel oxide, zinc oxide, and titanium oxide and an organic compound.
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Abe Hiroko
Nomura Ryoji
Yamazaki Shunpei
Costellia Jeffrey L.
Guharay Karabi
Nixon & Peabody LLP
Semiconductor Energy Laboratory Co,. Ltd.
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