Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1996-02-08
1999-08-03
Yamnitzky, Marie
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
428690, 428699, 428917, 313500, 313503, 313506, 313509, 257 88, 257 98, 257102, H05B 3300
Patent
active
059323272
ABSTRACT:
An electroluminescent element includes a glass substrate, on which are formed a first electrode, a first insulating layer, a first luminescent layer, a second luminescent layer, a second insulating layer, a second electrode, a protective film and a red color filter. In this structure, the first luminescent layer is made of ZnS having Mn added thereto, and the second luminescent layer is made of ZnS having Tb added thereto. Here, the clamp electric field intensity of the second luminescent layer is higher than that of the first luminescent layer, and the product of a dielectric constant and clamp electric field intensity of the first luminescent layer is larger than the product of a dielectric constant and clamp electric field intensity of the second luminescent layer. Consequently, it is possible to increase the luminance of light emitted from the luminescent layer and decrease the luminescence threshold voltage when the luminescent layer is made into a stacked layer structure.
REFERENCES:
patent: 4937150 (1990-06-01), Tsukada
patent: 5369333 (1994-11-01), Inoguchi et al.
patent: 5384517 (1995-01-01), Uno
patent: 5432014 (1995-07-01), Sano et al.
patent: 5540999 (1996-07-01), Yamamoto et al.
patent: 5589733 (1996-12-01), Noda et al.
patent: 5598059 (1997-01-01), Sun et al.
patent: 5641582 (1997-06-01), Nire et al.
patent: 5712051 (1998-01-01), Sugiura et al.
patent: 5742322 (1998-04-01), Cranton et al.
Ono, "Seminar F-1: Electroluminescent Displays", Society For Information Display (SID) 1993, Seminar Lecture Notes vol. II: May 17, ISSN 0887-915X, pp. F-1/3-F-1/9, F-1/18-F-1/25.
Ono, "Electroluminescent Displays", World Scientific Publishing Co. Pte. Ltd., 1995, pp. 26-43.
Chen, et al., "Limitation imposed by field clamping on the efficiency of high-field ac electrolumnescence in thin films", J. Appl. Phys., vol. 43, No. 10, Oct. 1972, pp. 4089-4096.
Hattori Tadashi
Inoguchi Kazuhiro
Ishihara Hajime
Ito Nobuei
Katayama Masayuki
Nippondenso Co. Ltd.
Yamnitzky Marie
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