Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2005-05-17
2010-10-12
Yamnitzky, Marie R. (Department: 1786)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C257SE51044, C544S225000
Reexamination Certificate
active
07811677
ABSTRACT:
It is an object of the present invention to obtain an organometallic complex that is capable of converting an excited triplet state into luminescence, a light-emitting element that can be driven for a long time, is high in luminous efficiency, and has a favorable long lifetime, and a light-emitting device using the light-emitting element. The present invention provides a light-emitting element that has a pair of electrodes (an anode and a cathode) and a light-emitting layer between a pair of electrodes, where the light-emitting layer includes an organometallic complex represented by the following general formula (5) and one of a compound that has a larger energy gap than the organometallic complex and a compound that has a larger ionization potential and a smaller electron affinity than the organometallic complex, and provides a light-emitting device using the light-emitting device.
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Abe Hiroko
Inoue Hideko
Ohsawa Nobuharu
Seo Satoshi
Shitagaki Satoko
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
Semiconductor Energy Laboratory Co,. Ltd.
Yamnitzky Marie R.
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