Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Patent
1996-12-12
1999-06-15
Patel, Ashok
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
313506, 313509, 428690, H05B 3300
Patent
active
059125322
ABSTRACT:
An improved white-lite emitting electroluminescent display capable of emitting a light having a red, blue, and green wave length in a single material and having a buffer layer of Si.sub.x N.sub.y between a dielectric layer of BaTa.sub.2 O.sub.6 and a light-emitting layer, which includes a substrate; a lower dielectric layer of Bata.sub.2 O.sub.6 formed on a transparent electrode; a light-emitting layer of SrS:Pr,F formed on the lower dielectric layer; a buffer layer of Si.sub.x N.sub.y formed on the light-emitting layer; a upper dielectric layer of BaTa.sub.2 O.sub.6 formed on the buffer layer; and an upper electrode formed on the upper dielectric layer, and further includes the steps of a first step which forms a lower electrode on a substrate; a second step which forms a light-emitting layer of SrS:Pr.F on a lower dielectric layer; a third step which forms a buffer layer of Si.sub.x N.sub.y on the light-emitting layer; a fourth step which forms a upper dielectric layer of BaTa.sub.2 O.sub.6 on the buffer layer; and a fifth step which deposits an aluminum electrode on the upper dielectric layer.
REFERENCES:
patent: 5200277 (1993-04-01), Nakayama et al.
patent: 5352543 (1994-10-01), Ryu
patent: 5476727 (1995-12-01), Maruta
patent: 5504389 (1996-04-01), Dickey
Jayaraj, M.K. et al, J. Electrochem. Soc., vol. 138, No. 5, pp. 1512-1516 (1991): "AC Thin Film Electroluminescent Devices with Rare Earth Doped ZnS".
Hahn Taek Sang
Jeung Seong Jae
Kim Dong Ho
Lee Chun Woo
Lee Yun Hi
Korea Institute of Science and Technology
Patel Ashok
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