×

Laterally contacted blue LED with superlattice current spreading layer

  • US 8,395,165 B2
  • Filed: 07/08/2011
  • Issued: 03/12/2013
  • Est. Priority Date: 07/08/2011
  • Status: Expired due to Fees
First Claim
Patent Images

1. A Light Emitting Diode (LED) device for emitting non-monochromatic light, the LED device comprising:

  • a substrate layer;

    a low resistance layer disposed over the substrate layer, wherein the low resistance layer includes a plurality of periods, and wherein at least one of the periods of the low resistance layer includes an aluminum-gallium-nitride sublayer and a gallium-nitride sublayer;

    an n-type layer disposed over and in contact with the low resistance layer, and wherein the n-type layer has a thickness of more than at least five hundred nanometers;

    an active layer disposed over the n-type layer, wherein the active layer includes a plurality of periods, and wherein at least one of the periods of the active layer includes an indium-gallium-nitride sublayer and a gallium-nitride sublayer;

    a p-type layer disposed over the active layer;

    a first electrode disposed on and in electrical contact with at least a portion of the n-type layer; and

    a second electrode disposed on and in electrical contact with at least a portion of the p-type layer, and wherein current flow between the first and second electrodes causes the non-monochromatic light to be emitted and to pass through the p-layer.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×