Wavelength converted semiconductor light emitting device
First Claim
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1. A method comprising:
- forming a plurality of wavelength converting elements, said forming comprising;
forming a first wavelength converting layer, the first wavelength converting layer being a wavelength converting ceramic,forming a second wavelength converting layer, the second wavelength converting layer including a wavelength converting material mixed in a binder material;
fusing the second wavelength converting layer to the first wavelength converting layer to produce a composite sheet that includes the first wavelength converting layer and the second wavelength converting layer, anddicing the composite sheet to form the plurality of wavelength converting elements, the dicing being performed after the first wavelength converting layer and the second wavelength converting layer are fused; and
attaching each of the wavelength converting elements to a different one of a plurality of semiconductor light emitting devices such that, for each of the wavelength converting elements, the first wavelength converting layer is disposed between the second wavelength converting layer and the semiconductor light emitting devices.
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Abstract
In embodiments of the invention, a light emitting device includes a semiconductor structure including a light emitting layer disposed between an n-type region and a p-type region. A first wavelength converting layer is disposed in a path of light emitted by the light emitting layer. The first wavelength converting layer may be a wavelength converting ceramic. A second wavelength converting layer is fused to the first wavelength converting layer. The second wavelength converting layer may be a wavelength converting material disposed in glass.
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11 Claims
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1. A method comprising:
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forming a plurality of wavelength converting elements, said forming comprising; forming a first wavelength converting layer, the first wavelength converting layer being a wavelength converting ceramic, forming a second wavelength converting layer, the second wavelength converting layer including a wavelength converting material mixed in a binder material; fusing the second wavelength converting layer to the first wavelength converting layer to produce a composite sheet that includes the first wavelength converting layer and the second wavelength converting layer, and dicing the composite sheet to form the plurality of wavelength converting elements, the dicing being performed after the first wavelength converting layer and the second wavelength converting layer are fused; and attaching each of the wavelength converting elements to a different one of a plurality of semiconductor light emitting devices such that, for each of the wavelength converting elements, the first wavelength converting layer is disposed between the second wavelength converting layer and the semiconductor light emitting devices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification