Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2005-10-14
2010-02-23
Tarazano, D. Lawrence (Department: 1794)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C313S506000, C252S301160, C257S040000, C257SE51027, C560S100000, C568S328000
Reexamination Certificate
active
07666524
ABSTRACT:
The present invention provides a novel material capable of realizing excellent color purity of blue, a light-emitting element and a light-emitting device using the novel material. The present invention provides an oligonaphthalene derivative represented by the formula (1). The oligonaphthalene derivatives of the present invention have an extremely large band gap, can emit light with extremely short wavelength, and can emit blue light with favorable color purity. In addition, a light-emitting element that can exhibit excellent color purity of blue can be obtained by applying this material to the light-emitting element or a light-emitting device; therefore the light-emitting element having superior color reproducibility can be provided.
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T. Hayashi et al.,Asymmetric Synthesis of Axially Chiral 1,1′:5′,1″—and 1,1′:4′,1″—Temaphthalenes by Asymmetric Cross-Coupling with a Chiral Ferrocenylphosphine-Nickel Catalyst, Tetrahedron Letters, vol. 30, No. 2, pp. 215-218, 1989.
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Kawakami Sachiko
Nakashima Harue
Nomura Ryoji
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
Semiconductor Energy Laboratory Co,. Ltd.
Tarazano D. Lawrence
Wilson Michael
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