High-density, independently addressable surface emitting...

Details High-density, independently addressable surface emitting... High-density, independently addressable surface emitting...

H - Electricity

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H01L 33/00 (2006.01) B41J 2/455 (2006.01) H01L 27/15 (2006.01) H01S 5/42 (2006.01) H01S 5/026 (2006.01) H01S 5/20 (2006.01)

Patent

CA 2051223

A high density surface emitting semiconductor LED array comprises disordered regions extending through a second confinement layer, an active layer and partially extending through a first confinement layer to define light emitting areas therebetween the disordered regions. Individual contacts on the second confinement layer aligned with each emitting area inject current through the layers to a contact on a substrate causing emission of light from the active layer through the surface of the exposed first confinement layer in the substrate. The second confinement layer can be replaced with a DBR to form an enhanced LED array. Both confinement layers can be replaced with DBRs to form a laser array. A refractive semiconductor layer, fresnel lenses or a micro lens array can be used to optically modify the surface emitted light.

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