Semiconductor light emitting device
First Claim
1. A semiconductor light emitting device comprising:
- a semiconductor light emitting element that emits first wavelength light;
a first fluorescent material that absorbs the first wavelength light and emits second wavelength light having a longer wavelength than the first wavelength light; and
a second fluorescent material that absorbs the first wavelength light and emits third wavelength light having a longer wavelength than the second wavelength light, the first fluorescent material and the second fluorescent material being represented by a common chemical composition formula, and the first wavelength light, the second wavelength light, and the third wavelength light being combined into light emission of mixed color.
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Accused Products
Abstract
A semiconductor light emitting device comprises: a semiconductor light emitting element that emits first wavelength light; a first fluorescent material that absorbs the first wavelength light and emits second wavelength light having a longer wavelength than the first wavelength light; and a second fluorescent material that absorbs the first wavelength light and emits third wavelength light having a longer wavelength than the second wavelength light. The first fluorescent material and the second fluorescent material are represented by a common chemical composition formula. The first wavelength light, the second wavelength light, and the third wavelength light are combined into light emission of mixed color.
115 Citations
20 Claims
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1. A semiconductor light emitting device comprising:
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a semiconductor light emitting element that emits first wavelength light;
a first fluorescent material that absorbs the first wavelength light and emits second wavelength light having a longer wavelength than the first wavelength light; and
a second fluorescent material that absorbs the first wavelength light and emits third wavelength light having a longer wavelength than the second wavelength light, the first fluorescent material and the second fluorescent material being represented by a common chemical composition formula, and the first wavelength light, the second wavelength light, and the third wavelength light being combined into light emission of mixed color. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A semiconductor light emitting device comprising:
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a semiconductor light emitting element that has a light emitting layer composed of InxGayAl1-x-yN (0≦
x≦
1, 0≦
y≦
1, x+y≦
1) and emits first wavelength light;
a first fluorescent material that absorbs the first wavelength light and emits the second wavelength light having a longer wavelength than the first wavelength light; and
a second fluorescent material that absorbs the first wavelength light and emits third wavelength light having a longer wavelength than the second wavelength light, both the first fluorescent material and the second fluorescent material being represented by a common chemical composition formula, (Me1-yEuy)2SiO4 (Me is at least one element selected from Ba, Sr, Ca and Mg, 0<
y≦
1), andthe composition ratio y of the first fluorescent material being different from the composition ratio y of the second fluorescent material. - View Dependent Claims (14, 15)
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16. A semiconductor light emitting device comprising:
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a semiconductor light emitting element that emits first wavelength light;
a first fluorescent material that absorbs the first wavelength light and emits second wavelength light having a longer wavelength than the first wavelength light;
a second fluorescent material that absorbs the first wavelength light and emits third wavelength light having a longer wavelength than the second wavelength light; and
a third fluorescent material that absorbs the first wavelength light and emits fourth wavelength light having a longer wavelength than the third wavelength light, the first fluorescent material, the second fluorescent material and the third fluorescent material being represented by a common chemical composition formula, and the first wavelength light, the second wavelength light, the third wavelength light and the fourth wavelength light being combined into light emission of mixed color. - View Dependent Claims (17, 18, 19, 20)
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Specification