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US007432119B2

United States Patent

Doan

(io) Patent No.: (45) Date of Patent:

US 7,432,119 B2 Oct. 7, 2008

(56)

LIGHT EMITTING DIODE WITH
CONDUCTING METAL SUBSTRATE

Inventor: Trung Tri Doan, Los Gatos, CA (US)

Assignee: Semileds Corporation, Milpitas, CA
(US)

Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 165 days.

Appl.No.: 11/032,882

Filed: Jan. 11, 2005

Prior Publication Data

US 2006/0154389 Al Jul. 13, 2006

Int. CI.

H01L 21/20 (2006.01)

U.S. CI 438/33; 438/459; 438/113;

257/E33.066

Field of Classification Search 438/22 47,

438/106-127, 459, 977 See application file for complete search history.

References Cited

U.S. PATENT DOCUMENTS

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6,448,102 Bl* 9/2002 Kneissletal 438/46

6,555,405 B2* 4/2003 Chen etal 438/22

6,658,041 B2 12/2003 Uebbing

6,744,071 B2 6/2004 Sanoetal.

6,746,889 Bl * 6/2004 Eliashevich et al 438/33

6,770,542 B2 8/2004 Plossletal.

6,800,500 B2 10/2004 Comanetal.

2004/0135158 Al 7/2004 Hon

2004/0245543 Al 12/2004 Yoo

2005/0098792 Al 5/2005 Lee etal.

2005/0196888 Al * 9/2005 Morita 438/44

2006/0099730 Al* 5/2006 Lee etal 438/46

2006/0151801 Al* 7/2006 Doan et al 257/99

2006/0154390 Al* 7/2006 Tranetal 438/22

2006/0154391 Al* 7/2006 Tranetal 438/22

2006/0154393 Al* 7/2006 Doan et al 438/26

2006/0157721 Al* 7/2006 Tranetal 257/98

OTHER PUBLICATIONS

PCT Search Report dated Feb. 9, 2007.

* cited by examiner

Primary Examiner—Savitri Mulpuri

(74) Attorney, Agent, or Firm—Patterson & Sheridan, LLP

(57) ABSTRACT

Systems and methods for fabricating a light emitting diode include forming a multilayer epitaxial structure above a carrier substrate; depositing at least one metal layer above the multilayer epitaxial structure; removing the carrier substrate.

6 Claims, 4 Drawing Sheets

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