James Haksoo Kim

US Patent:

6995389, Feb 7, 2006

Filed:

Jun 18, 2003

Appl. No.:

10/465775

Inventors:

James C. Kim - San Jose CA, US
Nathan F. Gardner - Mountain View CA, US
Michael R. Krames - Mountain View CA, US
Yu-Chen Shen - Sunnyvale CA, US
Troy A. Trottier - San Jose CA, US

Assignee:

Lumileds Lighting, U.S., LLC - San Jose CA

International Classification:

H01L 29/06
H01L 31/0328
H01L 31/0336
H01L 33/00

US Classification:

257 13, 257 14, 257 94, 257 96

Abstract:

Heterostructure designs are disclosed that may increase the number of charge carriers available in the quantum well layers of the active region of III-nitride light emitting devices such as light emitting diodes. In a first embodiment, a reservoir layer is included with a barrier layer and quantum well layer in the active region of a light emitting device. In some embodiments, the reservoir layer is thicker than the barrier layer and quantum well layer, and has a greater indium composition than the barrier layer and a smaller indium composition than the quantum well layer. In some embodiments, the reservoir layer is graded. In a second embodiment, the active region of a light emitting device is a superlattice of alternating quantum well layers and barrier layers. In some embodiments, the barrier layers are thin such that charge carriers can tunnel between quantum well layers through a barrier layer.

US Patent:

7085682, Aug 1, 2006

Filed:

Sep 18, 2002

Appl. No.:

10/245580

Inventors:

Jonathan Marc Heller - New York NY, US
James Christopher Kim - New York NY, US
Dwight Allen Merriman - New York NY, US
Andrew Joel Erlichson - Metuchen NJ, US
Benjamin Chien-wen Lee - Bayside NY, US

Assignee:

Doubleclick Inc. - New York NY

International Classification:

H04N 7/16

US Classification:

702186

Abstract:

A method and system for analyzing website activity. According to an example embodiment, the system receives event-level data representing visitor session activity on a client website; attributes characteristic information of the event-level data associated with each visitor's session to at least one of a plurality of visitor segments, stores results of the attributed information aggregated according to visitor segment prior to a client-requested analysis of the event-level data, and provides online reports based on the resultant data in response to a client-requested analysis of the event-level data.

US Patent:

7285799, Oct 23, 2007

Filed:

Apr 21, 2004

Appl. No.:

10/829141

Inventors:

James C. Kim - San Jose CA, US
Yu-Chen Shen - Sunnyvale CA, US

Assignee:

Philip Lumileds Lighting Company, LLC - San Jose CA

International Classification:

H01L 27/15
H01L 29/24

US Classification:

257 79, 257101, 257627, 257628, 257E33006, 257E33003, 372 45, 372 43, 372 75

Abstract:

A semiconductor light emitting device includes a planar light emitting layer with a wurtzite crystal structure having a axis roughly parallel to the plane of the layer, referred to as an in-plane light emitting layer. The in-plane light emitting layer may include, for example, a {11 0} or {10 0} InGaN light emitting layer. In some embodiments, the in-plane light emitting layer has a thickness greater than 50 Å.

US Patent:

7349827, Mar 25, 2008

Filed:

Sep 18, 2002

Appl. No.:

10/245579

Inventors:

Jonathan Marc Heller - New York NY, US
James Christopher Kim - New York NY, US
Dwight Allen Merriman - New York NY, US
Andrew Joel Erlichson - Metuchen NJ, US
Benjamin Chien-wen Lee - Bayside NY, US

Assignee:

DoubleClick Inc. - New York NY

International Classification:

G06F 11/30

US Classification:

702186, 702124

Abstract:

A method and system for reporting website activity. According to an example embodiment, the system receives event-level data representing visitor activity through navigation entities on a client website, infers attribution of one or more metrics to at least one navigation entity based on the visitor activity, and provides online reports to the client based on the inferred attribution.

US Patent:

7535031, May 19, 2009

Filed:

Sep 13, 2005

Appl. No.:

11/226184

Inventors:

James C. Kim - San Jose CA, US
Stephen A. Stockman - Morgan Hill CA, US

Assignee:

Philips Lumiled Lighting, Co. LLC - San Jose CA

International Classification:

H01L 27/15

US Classification:

257101, 257E2712

Abstract:

A semiconductor light emitting device includes an active region, an n-type region, and a p-type region comprising a portion that extends into the active region. The active region may include multiple quantum wells separated by barrier layers, and the p-type extension penetrates at least one of the quantum well layers. The extensions of the p-type region into the active region may provide uniform filling of carriers in the individual quantum wells of the active region by providing direct current paths into individual quantum wells. Such uniform filling may improve the operating efficiency at high current density by reducing the carrier density in the quantum wells closest to the bulk p-type region, thereby reducing the number of carriers lost to nonradiative recombination.

US Patent:

7610176, Oct 27, 2009

Filed:

Jun 6, 2006

Appl. No.:

11/422399

Inventors:

Jerome Tu - Saratoga CA, US
James Kim - San Jose CA, US
Bennett Chan - Saratoga CA, US
Jason Jianxiong Shi - Pleasanton CA, US

Assignee:

Palm, Inc. - Sunnyvale CA

International Classification:

G06F 17/40
G06F 19/00

US Classification:

702187, 702 1, 702 33, 702 34, 702127, 702182

Abstract:

A computing device is provided on which device analysis information is generated. The device analysis information may be generated from the use of diagnostic and monitoring applications and code. The device analysis information is handled by an application/central processor and then stored on a removeable storage device.

US Patent:

7629532, Dec 8, 2009

Filed:

Dec 29, 2006

Appl. No.:

11/648059

Inventors:

James C. Kim - San Jose CA, US
Sungsoo Yi - Sunnyvale CA, US

Assignee:

Sundiode, Inc. - Sunnyvale CA

International Classification:

H01L 31/00
H01L 21/00

US Classification:

136255, 136249, 136252, 257 14, 257 98, 438 72

Abstract:

A method and apparatus for solar cell having graded energy wells is provided. The active region of the solar cell comprises nanostructures. The nanostructures are formed from a material that comprises a III-V compound semiconductor and an element that alters the band gap of the III-V compound semiconductor. For example, the III-V compound semiconductor could be gallium nitride (GaN). As an example, the “band gap altering element” could be indium (In). The concentration of the indium in the active region is non-uniform such that the active region has a number of energy wells, separated by barriers. The energy wells may be “graded”, by which it is meant that the energy wells have a different band gap from one another, generally increasing or decreasing from one well to another monotonically.

US Patent:

7664928, Feb 16, 2010

Filed:

Jan 19, 2005

Appl. No.:

11/039757

Inventors:

Nupur B. Andrews - Sunnyvale CA, US
James Kim - San Jose CA, US
Himanshu A. Sanghavi - Fremont CA, US
William A. Huffman - Los Gatos CA, US
Eileen Margaret Peters Long - San Jose CA, US

Assignee:

Tensilica, Inc. - Santa Clara CA

International Classification:

G06F 15/00

US Classification:

712 14, 712 29, 712 38

Abstract:

A technique that improves both processor performance and associated data bandwidth through user-defined interfaces that can be added to a configurable and extensible microprocessor core. These interfaces can be used to communicate status or control information and to achieve synchronization between the processor and any external device including other processors. These interfaces can also be used to achieve data transfer at the rate of one data element per interface in every clock cycle. This technique makes it possible to design multiprocessor SOC systems with high-speed data transfer between processors without using the memory subsystem. Such a system and design methodology offers a complete shift from the standard bus-based architecture and allows designers to treat processors more like true computational units, so that designers can more effectively utilize programmable solutions rather than design dedicated hardware. This can have dramatic effects not only in the performance and bandwidth achieved by designs, but also in the time to market and reuse of such designs.