Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Patent
1999-02-16
2000-03-28
Patel, Vip
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
313498, 313499, 313502, 2523014S, 2523014H, H01J 162, C09K 1108
Patent
active
060436026
ABSTRACT:
A light emitting phosphor having improved luminance is incorporated into an ACTFEL device having front and rear electrode sets, a pair of insulators sandwiched between the front and rear electrode sets, and a thin film electroluminescent laminar stack which includes a phosphor layer having the formula M.sup.II S:D,H,F where M.sup.II is taken from the group calcium, strontium, barium, and magnesium, S=sulfur, D is taken from the group copper, lead, gold, silver, magnesium, antimony, bismuth and arsenic, H is taken from the group fluorine, chlorine, bromine, and iodine, and F is taken from the group gallium, indium, aluminum, germanium, silicon, lanthanum, scandium, and yttrium. Deep blue and green chromaticity phosphors may be obtained through selection of multiple co-dopants and adjusting their relative concentrations.
REFERENCES:
patent: 4365184 (1982-12-01), Higton et al.
patent: 4442377 (1984-04-01), Higton et al.
patent: 4725344 (1988-02-01), Yocom et al.
patent: 4751427 (1988-06-01), Barrow et al.
patent: 5939825 (1999-08-01), Sun et al.
Kane Jim
Sun Sey-Shing
Yocom P. Niel
Gerike Matthew J.
Patel Vip
Russell Kevin L.
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