Light emitting device

Details Light emitting device Light emitting device

2007-05-22

2007-05-22

Williams, Joseph (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

C252S30140S, C252S30160R

Reexamination Certificate

active

11135292

ABSTRACT:
A blue-emitting phosphor is optimized by controlling mole fractions typically of Mg and Si in Sr3-eMgbSi2cO8d:Eueor by further including an optimal amount of at least one additional component such as Ba or Ca. The resulting phosphor exhibits a higher brightness and a higher color purity upon excitation by ultraviolet light emitted as a result of discharge of xenon gas. The optimized phosphor is incorporated into light emitting devices such as lamps and PDPs, and further into display devices.

REFERENCES:
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Phosphor Handbook (In the Electrochemical Society of Japan), III, Chapter 2, pp. 219-223, (1987) with English Translation of Section 3.
IDW '00 Proceedings Of The Seventh International Display Workshops, pp. 639-642 (2000).
Technical Report of IEICE, EID 2003-69 (Jan. 2004), pp. 45-48.
Flat Panel Display 2003 (Jitsumu-hen) (In Japanese), Part 7.1, pp. 210-217 (2002) Nikkei Business Publications, Inc. attached English translation of main part.

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