Feng F Gao

US Patent:

7351357, Apr 1, 2008

Filed:

Feb 26, 2003

Appl. No.:

10/374875

Inventors:

Feng Gao - Wilmington DE, US

Assignee:

E.I. du Pont de Nemours and Company - Wilmington DE

International Classification:

H01B 1/04
H01B 1/12
B05D 5/12

US Classification:

252500, 252510, 427 961, 427122

Abstract:

Additives to organic conducting polymers are described which enhance adhesion and resolution of printed films while retaining adequate electrical conductivity. The conductive polymer films are useful in printing conductive portions of thin film transistors such as sources and drains. Additives include surfactants, second macromolecules, plasticizers, and excess sulfonic acids.

US Patent:

7666567, Feb 23, 2010

Filed:

Oct 23, 2007

Appl. No.:

11/877633

Inventors:

Feng Gao - Hockessin DE, US
Lynda Kaye Johnson - Wilmington DE, US
Roupen Leon Keusseyan - Raleigh NC, US
Irina Malajovich - Swarthmore PA, US
Jeffrey Scott Meth - Landenberg PA, US
Kenneth George Sharp - Landenberg PA, US
Seema Agrawal - Newark DE, US

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

G03C 8/00

US Classification:

430200, 430201

Abstract:

Disclosed is a method negative imaging method for making a metal pattern with high conductivity comprising providing a patterned substrate comprising a patterned catalyst layer on a base substrate by a thermal imaging method followed by plating to provide the metal pattern. The metal patterns provided are suitable for electrical devices including electromagnetic interference shielding devices and touchpad sensors.

US Patent:

7666568, Feb 23, 2010

Filed:

Oct 23, 2007

Appl. No.:

11/877637

Inventors:

Feng Gao - Hockessin DE, US
Lynda Kaye Johnson - Wilmington DE, US
Roupen Leon Keusseyan - Raleigh NC, US
Dalen E. Keys - Landenberg PA, US
Irina Malajovich - Swarthmore PA, US
Rinaldo S. Schiffino - Wilmington DE, US

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

G03C 8/00

US Classification:

430200, 430201

Abstract:

Disclosed is a method for making a metal pattern with high conductivity comprising providing a patterned substrate comprising a patterned catalyst layer on a base substrate by a thermal imaging method followed by plating to provide the metal pattern. The metal patterns provided are suitable for electrical devices including electromagnetic interference shielding devices and touchpad sensors.

US Patent:

7744717, Jun 29, 2010

Filed:

Apr 25, 2007

Appl. No.:

11/789842

Inventors:

Gerald Donald Andrews - Hockessin DE, US
Richard Kevin Bailey - Newark DE, US
Graciela Beatriz Blanchet - Wilmington DE, US
John W. Catron - Smyrna DE, US
Feng Gao - Hockessin DE, US
Gary Delmar Jaycox - West Chester PA, US
Lynda Kaye Johnson - Wilmington DE, US
Roupen Leon Keusseyan - Raleigh NC, US
Jeffrey Scott Meth - Landenberg PA, US
Frank S. Principe - Landenberg PA, US
Rinaldo S. Schiffino - Wilmington DE, US
Robert Mar Yohannan - Rutledge PA, US

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

B29C 65/00
B32B 37/00
B32B 38/10
H01L 29/08
H01L 35/24
H01L 51/00

US Classification:

156247, 257 40

Abstract:

Provided are processes for enhancing the resolution of a thermally transferred pattern on an imaged thermal transfer receiver, wherein the imaged thermal transfer receiver comprises a surface having an exposed portion and a non-exposed portion of one or more thermally transferred layer(s), comprising: (a) contacting said surface with an adhesive layer for a contact period to provide a laminate; (b) separating said adhesive layer from the laminate to provide a treated thermal transfer receiver having a surface substantially free of said non-exposed portion of one or more thermally transferred layer(s). The processes are useful in the fabrication of electronic devices including thin film transistors, circuits, electromagnetic interference shields, touchpad sensors and other electronic devices.

US Patent:

8308886, Nov 13, 2012

Filed:

Jul 17, 2006

Appl. No.:

11/488262

Inventors:

Gerald Donald Andrews - Hockessin DE, US
Marc B Goldfinger - West Chester PA, US
Mark Andrew Harmer - Landenberg PA, US
Gary Delmar Jaycox - West Chester PA, US
Lynda Kaye Johnson - Wilmington DE, US
Irina Malajovich - Swarthmore PA, US
William J Marshall - Wilmington DE, US
Elizabeth Forrester McCord - Hockessin DE, US
Charles Nehemiah McEwen - Newark DE, US
Jeffrey Scott Meth - Landenberg PA, US
Richard Kevin Bailey - Newark DE, US
Geoffrey Nunes - Swarthmore PA, US
Rinaldo Soria Schiffino - Wilmington DE, US
Paul J Shannon - Exton PA, US
Kenneth George Sharp - Landenberg PA, US
Karyn B Visscher - Morris Plains NJ, US
Graciela Beatriz Blanchet - Boston MA, US
Reid John Chesterfield - Wilmington DE, US
Thomas C Felder - Kennett Square PA, US
Feng Gao - Hockessin DE, US
Howard David Glicksman - Durham NC, US

Assignee:

E I du Pont de Nemours and Company - Wilmington DE

International Classification:

B41M 5/40
B32B 3/10
H01L 29/78

US Classification:

156235, 257288, 257E29255, 428 3272, 428 3274, 428 3277, 428207

Abstract:

The invention discloses processes for thermal transfer patterning of a nanoparticle layer and a corresponding proximate portion of a carrier layer, and optionally additional transfer layers, together onto a thermal imaging receiver. The invention is useful for dry fabrication of electronic devices. Additional embodiments of the invention include multilayer thermal imaging donors comprising in layered sequence: a base film, a carrier layer and a nanoparticle layer. The carrier layer can be a dielectric or conducting layer. When the carrier layer is a dielectric layer, the base film includes a light attenuating agent in the form of a dye or pigment.

US Patent:

8377622, Feb 19, 2013

Filed:

Sep 22, 2011

Appl. No.:

13/239826

Inventors:

Gerald Donald Andrews - Hockessin DE, US
Richard Kevin Bailey - Newark DE, US
Graciela Beatriz Blanchet - Wilmington DE, US
Reid John Chesterfield - Santa Barbara CA, US
Feng Gao - Hockessin DE, US
Marc B. Goldfinger - West Chester PA, US
Gary Delmar Jaycox - West Chester PA, US
Lynda Kaye Johnson - Wilmington DE, US
William J. Marshall - Wilmington DE, US
Elizabeth Forrester McCord - Hockessin DE, US
Charles Nehemiah McEwen - Newark DE, US
Jeffrey Scott Meth - Landenberg PA, US
Geoffrey Nunes - Swarthmore PA, US
Kenneth George Sharp - Landenberg PA, US

Assignee:

E.I. du Pont de Nemours and Company - Wilmington DE

International Classification:

G03F 7/00
G03F 7/004
B14M 5/40
G03C 8/00

US Classification:

430200, 4302701, 430905, 428 3274

Abstract:

The invention is related to thermal imageable dielectric layers and thermal transfer donors and receivers comprising dielectric layers. The thermal transfer donors are useful in making electronic devices by thermal transfer of dielectric layers having excellent resistivity, good transfer properties and good adhesion to a variety of receivers.

US Patent:

20020098417, Jul 25, 2002

Filed:

Jan 3, 2002

Appl. No.:

10/037702

Inventors:

Feng Gao - Laurel MD, US
Jeremy Barker - Oxforshire, GB
Hang Shi - Henderson NV, US
Tracy Kelley - Tucson AZ, US

International Classification:

H01M010/40
H01M010/08

US Classification:

429/339000, 429/326000, 429/327000, 429/342000, 429/343000, 429/332000

Abstract:

The invention provides an electrochemical cell having an electrolyte which comprises a solute, a solvent, and an additive. The additive is a dialkylamide. The dialkylamide lessens the extent of decomposition of the solute, which is a lithium salt. The ionic species of the lithium salt are thereby preserved. The additive also prevents damage to active material by absorbing excess charge energy below the breakdown potential of the active material.

US Patent:

20020110735, Aug 15, 2002

Filed:

Dec 18, 2000

Appl. No.:

09/739600

Inventors:

William Farnham - Hockessin DE, US
Feng Gao - Wilmington DE, US
Lech Wilczek - Wilmington DE, US

International Classification:

H01M010/40
H01M004/58

US Classification:

429/199000, 429/330000, 429/231800

Abstract:

Rechargeable lithium or lithium-ion electrochemical cells having unmodified natural or synthetic graphite anodes in contact with propylene carbonate or butylene carbonate electrolyte solvent are enabled by the addition of tetra- or pentafluorobenzenes having electron-donating substituents on the ring. Both reversible fraction and cycle life are favorably affected.