(54) ORGANIC ELECTROLUMINESCENT DEVICE
(75) Inventors: Yuji Hamada, Nara; Hiroshi Kanno, Osaka; Tsuyoshi Tsujioka, Osaka; Tatsuro Usuki, Osaka, all of (JP)
(73) Assignee: Sanyo Electric Co., Ltd., Moriguchi (JP)
( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.
(21) Appl. No.: 09/313,209
(22) Filed: May 18, 1999
(30) Foreign Application Priority Data
May 19, 1998 (JP) 10-136988
Sep. 22, 1998 (JP) 10-267927
May 11, 1999 (JP) 11-130177
(51) Int. CI.7 H05B 33/14
(52) U.S. CI 428/690; 428/917; 428/704;
428/212; 313/504; 313/506
(58) Field of Search 428/690, 704,
428/917, 212; 313/504, 506
(56) References Cited
U.S. PATENT DOCUMENTS
5,601,903 A * 2/1997 Fujii et al 428/212
5,645,948 A * 7/1997 Shi et al 428/690
Tang et al, "Electroluminescence of Doped Organic Thin Films", J. Appl. Phys. 65 (9), May 1, 1989, pp. 3610-3616. Takeuchi et al, "Effects of Anthracene Doping on Electrical and Light-Emitting Behavior of 8-Hydroxyquinoline-Aluminum-Based Electrodluminescent Devices", Jpn. J. Appl. Phys. vol. 31 (1992) pp. L498-L500. Arai et al, "Electroluminescence of Violanthrone obtained by Vacuum-Deposition of 3, 3'-dibenzanthronyl", J. Photopolym. Sci. Technol, vol. 7, No. 1, 1994, pp. 103-106. Kido et al, "White Light-Emitting Organic Electroluminescent Devices using the Poly(N-vinylcarbazole) Emitter Layer Doped with Three Fluorescent Dyes", Appl. Phys. Lett., vol. 64, No. 7, Feb. 14, 1994, pp. 815-817.
* cited by examiner
Primary Examiner—Cynthia H. Kelly
Assistant Examiner—Ling Xu
(74) Attorney, Agent, or Firm—Armstrong, Westerman & Hattori, LLP
