Red phosphor and luminous element using the same

Details Red phosphor and luminous element using the same Red phosphor and luminous element using the same

2006-06-16

2010-11-30

Dickey, Thomas L (Department: 2893)

Active solid-state devices (e.g., transistors, solid-state diode

Incoherent light emitter structure

With reflector, opaque mask, or optical element integral...

C257SE33001

Reexamination Certificate

active

07842961

ABSTRACT:
The present invention relates to a phosphor and a luminous element using the same. The present invention provides a phosphor for absorbing a portion of light emitted from a light source and emitting light with a wavelength different from that of the absorbed light. The phosphor comprises a fluorescent material having an alkaline earth metal-germanium metal-sulfur structure that contains Ge and at least one element selected from the group consisting of Sr and Ca and is activated by Eu. The phosphor of the present invention increases a color rendering index (CRI) of a white luminous element for a general lighting apparatus, and a luminous element using the phosphor has an advantage in that it is suitable for a white luminous element backlight which can substitute for a cold cathode fluorescent lamp (CCFL) in medium and large-sized TVs and has higher color reproducibility and higher white uniformity.

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