Light emitting device with reflective sidewall
AssigneeLumileds LLC
InventorsDawei Lu, Oleg Shchekin
Life of this patent
Estimating the term…
Abstract
Embodiments of the invention include a semiconductor light emitting device including a semiconductor structure. The semiconductor structure includes a light emitting layer disposed between an n-type region and a p-type region. A wavelength converting structure is disposed in a path of light emitted by the light emitting layer. A diffuse reflector is disposed along a sidewall of the semiconductor light emitting device and the wavelength converting structure. The diffuse reflector includes a pigment. A reflective layer is disposed between the diffuse reflector and the semiconductor structure. The reflective layer is a different material from the diffuse reflector.
Claims20
A device comprising:
- a light emitting semiconductor structure;
- a wavelength converting structure disposed on a top surface of the light emitting semiconductor structure;
- a light blocking structure disposed along a sidewall of the light emitting semiconductor structure and the wavelength converting structure, the light blocking structure being a diffuse reflector;
- and
- a reflective layer disposed between the light blocking structure and the semiconductor structure.
A device comprising:
- a light emitting semiconductor structure;
- a wavelength converting structure disposed on a top surface of the light emitting semiconductor structure;
- a light blocking structure disposed along a sidewall of the light emitting semiconductor structure and the wavelength converting structure and comprising a pigment the light blocking structure being a diffuse reflector;
- and
- a reflective layer disposed between the light blocking structure and the semiconductor structure and comprising a different material from the light blocking structure.
A device comprising:
- a light emitting semiconductor structure;
- a wavelength converting structure disposed on a top surface of the light emitting semiconductor structure;
- a light blocking structure disposed along a sidewall of the light emitting semiconductor structure and the wavelength converting structure and being a same color as an off-state color of the wavelength converting structure;
- and
- a reflective layer disposed between the light blocking structure and the semiconductor structure and comprising a different material from the light blocking structure.
Dependencies are inferred from the claim text.