Charles Matthew Swoboda

US Patent:

7026659, Apr 11, 2006

Filed:

Jun 3, 2004

Appl. No.:

10/859635

Inventors:

Robert C. Glass - Chapel Hill NC, US
Charles M. Swoboda - Morrisville NC, US
Bernd Keller - Goleta CA, US
James Ibbetson - Goleta CA, US
Brian Thibeault - Santa Barbara CA, US
Eric J. Tarsa - Goleta CA, US

Assignee:

Cree, Inc. - Durham NC

International Classification:

H01L 33/00

US Classification:

257 98, 257 99

Abstract:

Light emitting diodes include a substrate having first and second opposing faces and that is transparent to optical radiation in a predetermined wavelength range and that is patterned to define, in cross-section, a plurality of pedestals that extend into the substrate from the first face towards the second face. A diode region on the second face is configured to emit light in the predetermined wavelength range, into the substrate upon application of voltage across the diode region. A mounting support on the diode region, opposite the substrate is configured to support the diode region, such that the light that is emitted from the diode region into the substrate, is emitted from the first face upon application of voltage across the diode region. The first face of the substrate may include therein a plurality of grooves that define the plurality of triangular pedestals in the substrate. The grooves may include tapered sidewalls and/or a beveled floor.

US Patent:

7385574, Jun 10, 2008

Filed:

Apr 9, 1998

Appl. No.:

09/057838

Inventors:

Antony P. Van de Ven - Cary NC, US
Charles M. Swoboda - Cary NC, US

Assignee:

Cree, Inc. - Durham NC

International Classification:

G09G 3/32

US Classification:

345 82, 345 83, 257 89

Abstract:

A full color flat panel display module is formed of a matrix of pixels in rows and columns. Each pixel is formed of respective red, green and blue solid state light emitting diodes that can form any color on that portion of a CIE curve that falls within a triangle whose sides are formed by a line on the CIE curve between 430 nm and 660 nm, a line between 660 nm and a point between 500 and 530 nm, and a line between the 500-530 nm point and 430 nm.

US Patent:

7420222, Sep 2, 2008

Filed:

Aug 21, 2007

Appl. No.:

11/842350

Inventors:

Robert C. Glass - Chapel Hill NC, US
Charles M. Swoboda - Morrisville NC, US
Bernd Keller - Goleta CA, US
James Ibbetson - Goleta CA, US
Brian Thibeault - Santa Barbara CA, US
Eric J. Tarsa - Goleta CA, US

Assignee:

Cree, Inc. - Durham NC

International Classification:

H01L 33/00

US Classification:

257 98, 257 99, 257E33072, 257E33064

Abstract:

Light emitting diodes include a substrate having first and second opposing faces and that is transparent to optical radiation in a predetermined wavelength range and that is patterned to define, in cross-section, a plurality of pedestals that extend into the substrate from the first face towards the second face. A diode region on the second face is configured to emit light in the predetermined wavelength range, into the substrate upon application of voltage across the diode region. A mounting support on the diode region, opposite the substrate is configured to support the diode region, such that the light that is emitted from the diode region into the substrate, is emitted from the first face upon application of voltage across the diode region. A reflector is provided between the mounting support and the diode region, that is configured to reflect light that is emitted from the diode region back into the diode region, through the substrate that is transparent to optical radiation in the predetermined wavelength range and from the plurality of pedestals, upon application of voltage across the diode region. A layer of Indium Tin Oxide (ITO) is provided between the reflector and the diode region.

US Patent:

8258722, Sep 4, 2012

Filed:

Sep 24, 2009

Appl. No.:

12/566253

Inventors:

Charles M. Swoboda - Durham NC, US
Antony Paul Van De Ven - Hong Kong, CN
Gerald H. Negley - Chapel Hill NC, US

Assignee:

Cree, Inc. - Durham NC

International Classification:

H05B 37/02

US Classification:

315308, 315291, 315312

Abstract:

Solid state lighting devices and illumination methods involve use of multiple solid state emitters of different colored outputs (optionally including at least one white or near-white emitter). Operation of the solid state emitters is controlled with at least one circuit element to emphasize and/or deemphasize perception of at least one color of a target surface based upon a reflectance spectral distribution of the target surface. At least one emitter may have an associated passive or active filter; the filterable emitter and/or active filter may be operated to deemphasize perception of at least one color of a target surface. Activation and/or alteration of emphasis or deemphasis of perception of color of a target surface may be selected by a user or automatically controlled.

US Patent:

8426881, Apr 23, 2013

Filed:

Jan 27, 2009

Appl. No.:

12/360216

Inventors:

Robert C. Glass - Chapel Hill NC, US
Charles M. Swoboda - Morrisville NC, US
Bernd Keller - Goleta CA, US
James Ibbetson - Goleta CA, US
Brian Thibeault - Santa Barbara CA, US
Eric J. Tarsa - Goleta CA, US

Assignee:

Cree, Inc. - Durham NC

International Classification:

H01L 33/00

US Classification:

257 98, 257 99, 257E33072

Abstract:

A light emitting diode includes a diode region having a gallium nitride based n-type layer, an active region and a gallium nitride based p-type layer. A first reflector layer is provided on the gallium nitride based p-type layer, and a second reflector layer is provided on the gallium nitride based n-type layer. Bonding layers, a mounting support, a wire bond and/or transparent oxide layers also may be provided.

US Patent:

8591062, Nov 26, 2013

Filed:

Mar 1, 2013

Appl. No.:

13/781847

Inventors:

John Adam Edmond - Durham NC, US
Gerald H. Negley - Chapel Hill NC, US
Curt Progl - Raleigh NC, US
Mark Edmond - Raleigh NC, US
Praneet Athalye - Morrisville NC, US
Charles M. Swoboda - Cary NC, US
Antony Paul van de Ven - Hong Kong, HK
Paul Kenneth Pickard - Morrisville NC, US
Bart P. Reier - Cary NC, US
James Michael Lay - Apex NC, US
Peter E. Lopez - Cary NC, US

Assignee:

Cree, Inc. - Durham NC

International Classification:

F21S 4/00

US Classification:

36224901, 36224902, 36224906, 362219

Abstract:

A lamp has an optically transmissive enclosure and a base. A tower extends from the base into the enclosure and supports an LED assembly in the enclosure. The LED assembly comprises a plurality of LEDs operable to emit light when energized through an electrical path from the base. The tower and the LED assembly are arranged such that the plurality of LEDs are disposed about the periphery of the tower in a band and face outwardly toward the enclosure to create a source of the light that appears as a glowing filament. The tower forms part of a heat sink that transmits heat from the LED assembly to the ambient environment. The LED assembly has a three-dimensional shape. An electrical interconnect connects a conductor to the heat sink where the conductor is in the electrical path between the LED assembly and the base.

US Patent:

20020123164, Sep 5, 2002

Filed:

Jan 25, 2002

Appl. No.:

10/057821

Inventors:

David Slater - Raleigh NC, US
Robert Glass - Chapel Hill NC, US
Charles Swoboda - Morrisville NC, US
Bernd Keller - Goleta CA, US
James Ibbetson - Goleta CA, US
Brian Thibeault - Santa Barbara CA, US
Eric Tarsa - Goleta CA, US

International Classification:

H01L021/00

US Classification:

438/039000, 438/046000, 257/098000

Abstract:

Light emitting diodes include a substrate having first and second opposing faces and that is transparent to optical radiation in a predetermined wavelength range and that is patterned to define, in cross-section, a plurality of pedestals that extend into the substrate from the first face towards the second face. A diode region on the second face is configured to emit light in the predetermined wavelength range, into the substrate upon application of voltage across the diode region. A mounting support on the diode region, opposite the substrate is configured to support the diode region, such that the light that is emitted from the diode region into the substrate, is emitted from the first face upon application of voltage across the diode region. The first face of the substrate may include therein a plurality of grooves that define the plurality of triangular pedestals in the substrate. The grooves may include tapered sidewalls and/or a beveled floor. The first face of the substrate also may include therein an array of via holes. The via holes may include tapered sidewalls and/or a floor.

US Patent:

20060131599, Jun 22, 2006

Filed:

Jan 25, 2006

Appl. No.:

11/338918

Inventors:

David Slater - Raleigh NC, US
Robert Glass - Chapel Hill NC, US
Charles Swoboda - Morrisville NC, US
Bernd Keller - Goleta CA, US
James Ibbetson - Goleta CA, US
Brian Thibeault - Santa Barbara CA, US
Eric Tarsa - Goleta CA, US

International Classification:

H01L 33/00

US Classification:

257098000

Abstract:

Light emitting diodes include a substrate having first and second opposing faces and that is transparent to optical radiation in a predetermined wavelength range and that is patterned to define, in cross-section, a plurality of pedestals that extend into the substrate from the first face towards the second face. A diode region on the second face is configured to emit light in the predetermined wavelength range, into the substrate upon application of voltage across the diode region. A mounting support on the diode region, opposite the substrate is configured to support the diode region, such that the light that is emitted from the diode region into the substrate, is emitted from the first face upon application of voltage across the diode region. The first face of the substrate may include therein a plurality of grooves that define the plurality of triangular pedestals in the substrate. The grooves may include tapered sidewalls and/or a beveled floor. The first face of the substrate also may include therein an array of via holes. The via holes may include tapered sidewalls and/or a floor.