WAVELENGTH-CONVERTED SEMICONDUCTOR LIGHT EMITTING DEVICE INCLUDING A FILTER AND A SCATTERING STRUCTURE
First Claim
1. A device comprising:
- a semiconductor structure comprising a light emitting layer disposed between an n-type region and a p-type region;
a wavelength converting material disposed over the semiconductor structure, wherein the wavelength converting material is configured to absorb light emitted by the semiconductor structure and emit light of a different wavelength;
a filter disposed over the wavelength converting material, wherein the filter is configured to reflect at least a portion of blue ambient light; and
a scattering structure disposed over the wavelength converting layer, wherein the scattering structure is configured to scatter light.
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Accused Products
Abstract
A semiconductor structure comprises a light emitting layer disposed between an n-type region and a p-type region. A wavelength converting material is disposed over the semiconductor structure. The wavelength converting material is configured to absorb light emitted by the semiconductor structure and emit light of a different wavelength. A filter configured to reflect blue ambient light is disposed over the wavelength converting material. A scattering structure is disposed over the wavelength converting layer. The scattering structure is configured to scatter light. In some embodiments, the scattering structure is a transparent material having a rough surface, containing non-wavelength-converting particles that appear substantially white in ambient light, or including both a rough surface and white particles.
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Citations
15 Claims
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1. A device comprising:
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a semiconductor structure comprising a light emitting layer disposed between an n-type region and a p-type region; a wavelength converting material disposed over the semiconductor structure, wherein the wavelength converting material is configured to absorb light emitted by the semiconductor structure and emit light of a different wavelength; a filter disposed over the wavelength converting material, wherein the filter is configured to reflect at least a portion of blue ambient light; and a scattering structure disposed over the wavelength converting layer, wherein the scattering structure is configured to scatter light. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification