Stock material or miscellaneous articles – Composite – Of inorganic material
Reexamination Certificate
2007-08-07
2007-08-07
Yamnitzky, Marie (Department: 1774)
Stock material or miscellaneous articles
Composite
Of inorganic material
C428S917000, C313S504000, C313S506000, C257SE51044
Reexamination Certificate
active
11342424
ABSTRACT:
The present invention is directed to a novel phosphorescent compound formed by synthesizing an orthometallated complex by using easily-synthesized ligands. The invention is further directed to an electroluminescent device having high luminous efficiency by using the phosphorescent compound. Moreover, the invention is also directed to a light-emitting device operating at a low voltage by using the electroluminescent device. According to the present invention, a phosphorescent compound represented by general formula [formula 1] is synthesized. Further, an electroluminescent device containing the phosphorescent compound is formed. In order to generate phosphorescent emission more efficiently, a heavy metal is preferably used as a central metal from the perspective of heavy atom effects. Therefore, one feature of the present invention is that the central metal M in the below general formula [formula 1] is iridium or platinum
REFERENCES:
patent: 6893743 (2005-05-01), Sato et al.
patent: 2002/0125818 (2002-09-01), Sato et al.
patent: 2003/0218418 (2003-11-01), Sato et al.
patent: 2002-319488 (2002-10-01), None
Tang, C.W. et al, “Organic Electroluminescent Diodes,” Applied Physics Letters, vol. 51, No. 12, pp. 913-915, Sep. 21, 1987.
Tsutsui, T., “The Operation Mechanism and the Light Emission Efficiency of the Organic EL Element,” Textbook of the 3rdSeminar at Division of Organic Molecular Electronics and Bioelectronics, The Japan Society of Applied Physics, pp. 31-37, (English translation, pp. 1-11), (1993).
Inoue, H. et al, “A Reaction of Singlet Oxygen with an Unsaturated Organic Molecule,” 6.1, Quencher and Photosensitizer,Basic Chemistry Course PHOTOCHEMISTRY I, pp. 106-110, Maruzen Co., Japan, (1999).
O'Brien, D.F. et al, “Improved Energy Transfer in Electrophosphorescent Devices,” Applied Physics Letters, vol. 74, No. 3, pp. 442-444, Jan. 18, 1999.
Tsutsui, T. et al, “High Quantum Efficiency in Organic Light-Emitting Devices with Iridium-Complex as a Triplet Emissive Center,” Japanese Journal of Applied Physics, vol. 38, part 2, No. 12B, pp. L1502-L1504, Dec. 15, 1999.
Baldo, M.A. et al, “High-Efficiency Fluorescent Organic Light-Emitting Devices Using a Phosphorescent Sensitizer,” Nature, (London) vol. 403, pp. 750-753, Feb. 17, 2000.
Thompson, M.E. et al, “Phosphorescent Materials and Devices,” The 10thInternational Workshop on Inorganic and Organic Electroluminescence, (EL '00) pp. 35-38, (2000).
International Preliminary Examination Report for application No. PCT/JP03/14816, dated Jun. 15, 2004, (In Japanese)—with partial English translation.
Anderson, C. et al, “Oxidative Addition of Alkyl Halides to Chiral Cyclometallated Platinum(II) Complexes with Thienyl Imines. X-ray Crystal Structure of [PtMe{3-( (S)-PhCHMeNCH) C4H2S}SMe2],” Journal of Organometallic Chemistry, vol. 604, pp. 178-185, (2000).
International Search Report for application No. PCT/JP03/14816, dated Mar. 16, 2004 (In Japanese).
Inoue Hideko
Nomura Ryoji
Seo Satoshi
Tokuda Atsushi
Cook Alex McFarron Manzo Cummings & Mehler, Ltd.
Semiconductor Energy Laboratory Co,. Ltd.
Yamnitzky Marie
LandOfFree
Phosphorescence compound and electro field light emitting... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Phosphorescence compound and electro field light emitting..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phosphorescence compound and electro field light emitting... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3853458