Andrew D Locke

US Patent:

8304784, Nov 6, 2012

Filed:

Dec 23, 2009

Appl. No.:

12/646918

Inventors:

Andrew Locke - Trabuco Canyon CA, US

International Classification:

H01L 33/00

US Classification:

257 77, 257 88, 257 89, 257 98, 257E33002, 257E33013, 257E33014, 257E33026, 257E33035, 257E33074

Abstract:

An illumination device having a plurality of light emitting diodes is provided. The light emitting diode may include a plurality of semiconductor layers at least one of which has a light emitting surface which may include a rough surface pattern having a pre-determined pattern. The pre-determined pattern may include one or more impurity regions with each region having a recess for guiding current across the light emitting surface and maximizing the emission of light (i. e. light intensity) of the illumination device. Each recess may include a lower internal portion having a bottom contact point located on a bottom surface and an upper internal portion integrally connected to the lower internal portion by a plurality of center contact points. The gaps created between the center and bottom contact points in adjacent recesses may act as spark gaps allowing for the current to flow through the entire light emitting surface.

US Patent:

20100213483, Aug 26, 2010

Filed:

Dec 23, 2009

Appl. No.:

12/646914

Inventors:

Andrew Locke - Trabuco Canyon CA, US

International Classification:

H01L 33/10

US Classification:

257 98, 257E33067

Abstract:

An illumination device having a plurality of light emitting diodes is provided. The light emitting diode may include a plurality of semiconductor layers at least one of which has a light emitting surface which may include a rough surface pattern having a pre-determined pattern. The pre-determined pattern may include one or more impurity regions with each region having a plurality of peaks and valleys for directing the flow of current and causing an increase in the emission of light to reflect outwards from the light emitting surface while decreasing light reflected into the light emitting surface and as a result reducing the dissipation of heat. The plurality of impurity regions may be arranged such that a checkered pattern or configuration is formed by alternating the direction of the peaks and valleys in each region.

US Patent:

20100213869, Aug 26, 2010

Filed:

Dec 23, 2009

Appl. No.:

12/646909

Inventors:

Andrew Locke - Trabuco Canyon CA, US

International Classification:

H01L 33/00
H05B 37/02

US Classification:

315294, 257 98, 257E33074

Abstract:

An illumination device having one or more light emitting diodes is provided. The illumination device may include an alternate current to direct current converter, a current regulator for receiving an output of the alternate current to direct current converter and a light source, containing the one or more of light emitting diodes, for receiving the regulated current from the current regulator. The regulated current may be applied to the one or more light emitting diodes causing the light emitting diodes to illuminate. The one or more light emitting diodes may be connected in series and each light emitting diode may include a light emitting surface having rough surface pattern for maximizing the light intensity of the light emitting diodes while minimizing the heat dissipating from the light emitting diodes.