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US 2007/0164661 A1Published application
Fluorescent conversion medium and color light emitting device
AssigneeIdemitsu Kosan Co., Ltd.
InventorHitoshi Kuma
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Abstract
A fluorescent conversion medium including: fluorescent particles including semiconductor nanocrystals, the particles absorbing visible light to emit fluorescence of a different wavelength, and a transparent medium holding the fluorescent particles dispersed therein, and satisfying 0.4<C·d/r3<5.0 wherein r is the average diameter (unit: nm) of the fluorescent particles, d is the film thickness (unit: μm) of the fluorescent conversion medium, and C is the volume ratio (unit: vol %) of the fluorescent particles to the fluorescent conversion medium.
Claims12
A fluorescent conversion medium comprising:
- fluorescent particles comprising semiconductor nanocrystals, the particles absorbing visible light to emit fluorescence of a different wavelength,
- a transparent medium holding the fluorescent particles dispersed therein, and
- satisfying 0.4<C·d/r3<5.0
- wherein r is the average diameter (unit:
- nm) of the fluorescent particles, d is the film thickness (unit:
- μm) of the fluorescent conversion medium, and C is the volume ratio (unit:
- vol %) of the fluorescent particles to the fluorescent conversion medium.
4 more elements
Dependencies are inferred from the claim text.