Cree Gmbh

Pritish Kar

Matthew Donofrio

David Beardsley Slater, Jr

Sten Heikman

Yuvaraj Dora

Harshad Golakia

Brad Williams

Rajeev Acharya

Simplified LED chip architectures or chip builds are disclosed that can result in simpler manufacturing processes using fewer steps. The LED structure can have fewer layers than conventional LED chips with the layers arranged in different ways for efficient fabrication and operation. The LED chips can comprise an active LED structure. A dielectric reflective layer is included adjacent to one of the oppositely doped layers. A metal reflective layer is on the dielectric reflective layer, wherein the dielectric and metal reflective layers extend beyond the edge of said active region. By extending the dielectric layer, the LED chips can emit with more efficiency by reflecting more LED light to emit in the desired direction. By extending the metal reflective layer beyond the edge of the active region, the metal reflective layer can serve as a current spreading layer and barrier, in addition to reflecting LED light to emit in the desired direction. The LED chips can also comprise self-aligned and self-limiting features that simplify etching processes during fabrication.

High efficiency LEDs and methods of manufacturing

A light emitting device includes an active layer configured to provide light emission due to carrier recombination therein, a surface on the active layer, and an electrically conductive contact structure on the surface. The contact structure includes at least one plated contact layer. The contact structure may include a sublayer that conforms to the surface roughness of the underlying surface, and the plated contact layer may be substantially free of the surface roughness of the underlying surface. The surface of the plated contact layer may be substantially planar and/or otherwise configured to reflect the light emission from the active layer. Related fabrication methods are also discussed.

Light emitting diode (LED) contact structures and process for fabricating the same

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Cary, NC, United States of America

Pritish Kar