EL phosphor powder and EL device

Details EL phosphor powder and EL device EL phosphor powder and EL device

2006-03-07

2006-03-07

Patel, Ashok (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S502000, C313S301000, C313S301000, C428S917000

Reexamination Certificate

active

07009337

ABSTRACT:
Disclosed is EL phosphor powder which contains phosphor particles that comprise zinc sulfide as the matrix thereof and contain an activator and a co-activator, wherein at least 30% of the projected area of the phosphor particles contained in the EL phosphor powder are those having an aspect ratio (length of major axis/length of minor axis) of at least 1.5. The EL phosphor powder emits light of higher brightness.

REFERENCES:
patent: 5644193 (1997-07-01), Matsuda et al.
patent: 8-183954 (1996-07-01), None
patent: 11-193378 (1999-07-01), None

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