Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2005-07-12
2005-07-12
Thompson, Camie S (Department: 1774)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C313S506000, C252S301160, C257S040000
Reexamination Certificate
active
06916552
ABSTRACT:
An organic electroluminescent device capable of blue emission with a high color purity, and a display unit capable of full-color display with high color expressivity by using the organic electroluminescent device are provided. The organic electroluminescent device includes at least a hole transportation layer and a luminescent layer held between a lower electrode to become an anode and an upper electrode to become a cathode in a state of lamination in that order from the anode side. The luminescent layer is made of a spiro compound, and the hole transportation layer is made of triphenylamine tetramer. Furthermore, the display unit includes organic electroluminescent devices as blue-emitting elements arrayed for a plurality of pixels.
REFERENCES:
patent: 5885498 (1999-03-01), Matsuo et al.
patent: 6211369 (2001-04-01), Salbeck et al.
patent: 6391482 (2002-05-01), Matsuo et al.
patent: 6447934 (2002-09-01), Suzuki et al.
patent: 07-278537 (1995-10-01), None
patent: WO96/04687 (1996-02-01), None
M. Matsuura, et al., “S11-2 Performance of RGS Multi-Color Organic EL Display”, Asia Display, 1995, pp. 269-270.
T. Yamada, et al.,Current Status and Perspective of Active-type Organic EL Display, Electronic Display Forum 2000, Apr. 12-14, 2000, pp. 5-18 to 5-23.
J. Salbeck, et al., “Low molecular organic glasses for blue electroluminescence”, Synthetic Metals 91 (1997) 2009-215.
J. Salbeck, et al., “Spiro Linked Compounds as Active Materials in Organic Light Emitting Diodes”, Hoechst AG Corporate Research and Max-Planck-Institute for Polymer Research, pp. 349-350.
Ichimura Mari
Shibanuma Tetsuo
Takada Ichinori
Tamura Shinichiro
Ueda Naoyuki
Sonnenschein Nath & Rosenthal LLP
Thompson Camie S
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