Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2005-12-23
2010-02-23
Tarazano, D. Lawrence (Department: 1794)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C313S506000, C257S040000
Reexamination Certificate
active
07666525
ABSTRACT:
An organic EL device has a layer containing a polyimide having a triphenylamine derivative (TPD) unit. The use of the polyimide as a polymer layer material can ensure solvent selectivity in coating the light-emitting layer and the organic EL device exhibits good luminance efficiency even after a prolonged period use.
REFERENCES:
patent: 2003/0098646 (2003-05-01), Suh et al.
patent: 09-298089 (1997-11-01), None
Troadec et al., “Organic light-emitting diodes based on multilayer structures,” Synthetic Metals, vol. 124, No. 1, pp. 49-51, Oct. 2001.
Machine Translation of JP 09-298089.
Oishi et al., “Preparation and properties of novel soluble aromatic polyimides from 4,4-diaminotriphenylamine and aromatic tetracarboxylic dianhydrides,” Journal of Polymer Science Part A: Polymer Chemistry, vol. 30, No. 6, pp. 1027-1035, May 1992.
Aleksandrova et al, “Polyimide structures with high charge-carrier mobility for electroluminescent devices and liquid-crystal light modulators,” Journal of Optical Technology, vol. 68, No. 11, pp. 805-808, Nov. 2001.
Rumyantsev et al, “Photoconducting polymer nanocomposites for photovoltaic applications,” Voprosy Biologicheskoi, Meditsinskoi i Farmatsevtichescoi Khimii, vol. 4, pp. 22-26, 2004.
An article “The role of PI interlayer deposited by ionized cluster beam on the electroluminescence efficiency” written by Cho, et al. published in Thin Solid Films 417, pp. 175-179 in 2002.
An article “Spin-cast thin semiconducting poly mer interlayer for improving device efficiency of polymer light-emitting diodes” written by Kim, et al. published in Applied Physics Letters 87, in 2005.
Jung Myung-Sup
Lee Tae-Woo
Sohn Byung-Hee
Bushnell , Esq. Robert E.
Samsung Mobile Display Co., Ltd.
Tarazano D. Lawrence
Thompson Camie S
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