Light emititng device
First Claim
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1. A light emitting device comprising:
- a light-emitting element comprising a Group III nitride compound semiconductor and having a light-emitting layer emitting light with an emission peak wavelength in an ultraviolet region and light with an emission peak wavelength in a visible region; and
a fluorescent material excited by said light in the ultraviolet region to emit light with a wavelength different from that of excitation light.
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Abstract
According to the invention, a Group III nitride compound semiconductor light-emitting element is provided with a light-emitting layer comprising two layers of different in ratio of AlGaInN composition, and emitting light with an emission peak wavelength in an ultraviolet region and light with an emission peak wavelength in a visible region. The light-emitting element and a fluorescent material excited by light in the ultraviolet region are combined to configure a light emitting device.
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Citations
11 Claims
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1. A light emitting device comprising:
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a light-emitting element comprising a Group III nitride compound semiconductor and having a light-emitting layer emitting light with an emission peak wavelength in an ultraviolet region and light with an emission peak wavelength in a visible region; and
a fluorescent material excited by said light in the ultraviolet region to emit light with a wavelength different from that of excitation light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification