Frank H Chung

US Patent:

8153475, Apr 10, 2012

Filed:

Aug 17, 2010

Appl. No.:

12/858379

Inventors:

Frank Tin Chung Shum - Sunnyvale CA, US
Thomas M. Katona - Goleta CA, US
Michael Ragan Krames - Los Altos CA, US

Assignee:

Sorra, Inc. - Goleta CA

International Classification:

H01L 21/44
H01L 21/48

US Classification:

438113, 438118, 438670, 257E21601, 257E21025, 257E21034

Abstract:

A method for fabricating optical devices on a reusable handle substrate. The method includes providing a handle substrate having a surface region. The method also includes forming a plurality of optical device using at least an epitaxial growth process overlying the surface region and then releasing the handle substrate from the plurality of optical devices. The method reuses the handle substrate for another fabrication process.

US Patent:

8324835, Dec 4, 2012

Filed:

Feb 11, 2011

Appl. No.:

13/025860

Inventors:

Frank Tin Chung Shum - Sunnyvale CA, US
Clifford Jue - Santa Cruz CA, US

Assignee:

Soraa, Inc. - Fremont CA

International Classification:

G05F 1/00
F21S 4/00

US Classification:

315291, 36224901

Abstract:

A method for forming a light source includes receiving an LED light module having a plurality of LEDs on a silicon substrate coupled to a flexible printed circuit and bonding the LED light module directly to a heat-sink with a thermal adhesive A base module with LED driver circuits is inserted into an interior channel of the heat sink and contacts of the LED driver circuits are connected to the LED light module.

US Patent:

8525396, Sep 3, 2013

Filed:

Feb 11, 2011

Appl. No.:

13/025791

Inventors:

Frank Tin Chung Shum - Sunnyvale CA, US
Clifford Jue - Santa Cruz CA, US

Assignee:

Soraa, Inc. - Fremont CA

International Classification:

H01J 61/52

US Classification:

313 46, 362294

Abstract:

An illumination source includes a heat sink with a planar inner core region and an outer core region having structures to dissipate heat from the inner core region. An LED assembly is affixed to the planar substrate and an adhesive layer between the planar substrate and the planar inner core region conducts heat from the LED assembly to the inner core region.

US Patent:

8618742, Dec 31, 2013

Filed:

Feb 11, 2011

Appl. No.:

13/025849

Inventors:

Frank Tin Chung Shum - Sunnyvale CA, US
Clifford Jue - Santa Cruz CA, US

Assignee:

Soraa, Inc. - Fremont CA

International Classification:

G05F 1/00
F21S 4/00

US Classification:

315291, 36224901

Abstract:

A light source manufacturing method includes disposing LEDs upon a substrate having input pads for receiving an operating voltage for the LEDs, bonding a flexible PC board to the substrate, and using a thermally conductive adhesive bonding the substrate onto a planar region of a heat sink.

US Patent:

8643257, Feb 4, 2014

Filed:

Feb 11, 2011

Appl. No.:

13/025833

Inventors:

Frank Tin Chung Shum - Sunnyvale CA, US
Clifford Jue - Santa Cruz CA, US

Assignee:

Soraa, Inc. - Fremont CA

International Classification:

H01J 1/02

US Classification:

313 46, 362294, 445 23

Abstract:

A illumination source includes a LED assembly and an MR-16 form factor heat sink coupled to the LED assembly. The MR-16 form factor heat sink has an inner core region and an outer core region with the LED assembly disposed upon the inner core region, and the outer core region providing a heat sink.

US Patent:

20110186874, Aug 4, 2011

Filed:

Feb 2, 2011

Appl. No.:

13/019897

Inventors:

Frank Tin Chung Shum - Sunnyvale CA, US

Assignee:

Soraa, Inc. - Fremont CA

International Classification:

H01L 33/52
H01L 33/60

US Classification:

257 88, 438 28, 257E33059, 257E33072

Abstract:

A method of manufacturing LED devices using substrate scale processing includes providing a substrate member having a surface region. A reflective layer is disposed on the surface region, the reflective surface having a reflectivity of at least 85%, An array of conductive regions is spatially disposed on the reflective surface. LED devices are affixed to each of the array regions.

US Patent:

20110215348, Sep 8, 2011

Filed:

Feb 2, 2011

Appl. No.:

13/019521

Inventors:

Troy Anthony Trottier - Fremont CA, US
Michael Ragan Krames - Los Altos CA, US
Rajat Sharma - Fremont CA, US
Frank Tin Chung Shum - Sunnyvale CA, US
Rakesh Venkatesh - Oakland CA, US

Assignee:

Soraa, Inc. - Fremont CA

International Classification:

H01L 33/08
B82Y 99/00
B82Y 20/00

US Classification:

257 89, 977774, 977950, 257E33005

Abstract:

An optical device includes an LED formed on a substrate and a wavelength conversion material, which may be stacked or pixilated, within vicinity of the LED. A wavelength selective surface blocks direct emission of the LED device and transmits selected wavelengths of emission caused by an interaction with the wavelength conversion material.

US Patent:

20110317397, Dec 29, 2011

Filed:

Jun 23, 2011

Appl. No.:

13/135087

Inventors:

Troy Anthony Trottier - Fremont CA, US
Michael Ragan Krames - Los Altos CA, US
Rajat Sharma - Fremont CA, US
Frank Tin Chung Shum - Sunnyvale CA, US

Assignee:

Soraa, Inc. - Fremont CA

International Classification:

F21V 9/16
H01J 9/26

US Classification:

362 84, 445 44

Abstract:

An LED based lighting source is disclosed in which color correcting quantum dots convert emitted blue light to white light.