Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Patent
1998-02-19
1999-08-10
Patel, Vip
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
313503, 313511, 313512, H01J 162
Patent
active
059363460
ABSTRACT:
An electroluminescence element provided with a luminescent layer sandwiched between two electrodes on an insulating substrate. The luminescent layer is composed of zinc sulfide with a fluoride or a luminescent center element added, wherein the X-ray diffraction spectrum thereof has only a single peak at an X-ray diffraction angle from the luminescent layer, ranging from 25.degree. to 30.degree. according to a thin film X-ray diffraction measurement method using Cu-Kd radiation, and no other peaks of the X-ray diffraction spectrum exist at an X-ray diffraction angle of 27.degree..
REFERENCES:
patent: 4508610 (1985-04-01), Freeman
patent: 4675092 (1987-06-01), Baird
patent: 4707419 (1987-11-01), Ogura
patent: 5369333 (1994-11-01), Inoguchi
Ohwaki et al., "High-Brightness Blue, Red, and Stable Green Thin-Film Electroluminescent Devices", Electrical Communications Laboratories, 1987, pp. 811-818.
Hirabayashi et al., "Color Electroluminescent Devices Prepared by Metal Organic Chemical Vapor Deposition", Japanese Journal of Applied Physics, Sep., 1987, vol. 26, No. 9, pp. 1472-1476.
Hattori Tadashi
Hattori Yutaka
Ishihara Hajime
Ito Nobuei
Katayama Masayuki
Nippondenso Co. Ltd.
Patel Vip
Research Development Corporation of Japan
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