Patents by Inventor Gordana Srdanov

Gordana Srdanov has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8945426
    Abstract: The present invention relates to electrically conductive polymer compositions, and their use in electronic devices. The compositions contain a semi-aqueous dispersion of at least one electrically conductive polymer doped with at least one highly-fluorinated acid polymer, non-conductive oxide nanoparticles, at least one high-boiling organic liquid, and at least one lower-boiling organic liquid.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: February 3, 2015
    Assignees: E I du Pont de Nemours and Company, Dupont Displays Inc
    Inventors: Tami Janene Faircloth, Che-Hsiung Hsu, Daniel David Lecloux, Hjalti Skulason, Gordana Srdanov, Charles D. Lang, Michel Dubeau, Nancy L. Gin, Veevin Tsao Kuo Hsu
  • Patent number: 8481104
    Abstract: Disclosed are methods of fabricating an organic electronic device, which includes dip coating layers, and the devices made therefrom.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: July 9, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Gordana Srdanov, Gang Yu
  • Publication number: 20120175596
    Abstract: The present invention relates to electrically conductive polymer compositions, and their use in electronic devices. The compositions contain a semi-aqueous dispersion of at least one electrically conductive polymer doped with at least one highly-fluorinated acid polymer, non-conductive oxide nanoparticles, at least one high-boiling organic liquid, and at least one lower-boiling organic liquid.
    Type: Application
    Filed: March 12, 2010
    Publication date: July 12, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Tami Janene Faircloth, Che-Hsiung Hsu, Veevin Tsao Kuo Hsu, Wesley Hsu, Trevor Hsu, Daniel David Lecloux, Hjalti Skulason, Gordana Srdanov, Charles D. Lang, Michel Dubeau, Nancy L. Gin
  • Patent number: 7923276
    Abstract: Processes for forming an electronic device include forming a first radiation region, a second radiation region spaced apart from the first radiation region, and an insulating region. The insulating region can have a first side and a second side opposite the first side. The first radiation region can lie immediately adjacent to the first side, and the second radiation region can lie immediately adjacent to the second side. Within the insulating region, no other radiation region may lie between the first and second radiation regions, and the insulating region can include an insulating layer that includes a plurality of openings. A process for forming the electronic device can include patterning an insulating layer.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: April 12, 2011
    Assignees: E. I. du Pont de Nemours and Company, Company Dupont Displays Inc
    Inventors: Charles Douglas MacPherson, Gordana Srdanov, Gang Yu
  • Publication number: 20100291721
    Abstract: Processes for forming an electronic device include forming a first radiation region, a second radiation region spaced apart from the first radiation region, and an insulating region. The insulating region can have a first side and a second side opposite the first side. The first radiation region can lie immediately adjacent to the first side, and the second radiation region can lie immediately adjacent to the second side. Within the insulating region, no other radiation region may lie between the first and second radiation regions, and the insulating region can include an insulating layer that includes a plurality of openings. A process for forming the electronic device can include patterning an insulating layer.
    Type: Application
    Filed: July 30, 2010
    Publication date: November 18, 2010
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY DUPONT DISPLAYS INC
    Inventors: CHARLES DOUGLAS MACPHERSON, Gordana Srdanov, Gang Yu
  • Publication number: 20100233383
    Abstract: Disclosed are methods of fabricating an organic electronic device, which includes dip coating layers, and the devices made therefrom.
    Type: Application
    Filed: December 29, 2005
    Publication date: September 16, 2010
    Applicant: E.I. du Pont de Nemours and Company
    Inventors: Gordana Srdanov, Gang Yu
  • Patent number: 7795653
    Abstract: An electronic device can include a first radiation region, a second radiation region spaced apart from the first radiation region, and an insulating region. The insulating region can have a first side and a second side opposite the first side. The first radiation region can lie immediately adjacent to the first side, and the second radiation region can lie immediately adjacent to the second side. Within the insulating region, no other radiation region may lie between the first and second radiation regions, and the insulating region can include an insulating layer that includes a plurality of openings. In another aspect, a process for forming the electronic device can include patterning an insulating layer.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: September 14, 2010
    Assignees: E. I. du Pont de Nemours and Company, DuPont Displays, Inc.
    Inventors: Charles Douglas Macpherson, Gordana Srdanov, Gang Yu
  • Patent number: 7420205
    Abstract: An electronic device made by a process that includes forming a first layer over a substrate and placing a first liquid composition over a first portion of the first layer. The first liquid composition includes at least a first guest material and a first liquid medium. The first liquid composition comes in contact with the first layer and a substantial amount of the first guest material intermixes with the first layer. An electronic device includes a substrate and a continuous first layer overlying the substrate. The continuous layer includes a first portion in which an electronic component lies and a second portion where no electronic component lies. The first portion is at least 30 nm thick and includes a first guest material, and the second portion is no more than 40 nm thick.
    Type: Grant
    Filed: August 17, 2007
    Date of Patent: September 2, 2008
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Charles D. MacPherson, Gordana Srdanov, Matthew Stainer, Gang Yu
  • Publication number: 20080020669
    Abstract: There is provided a process for making a multicolor organic light-emitting diode. The diode has a plurality of first subpixel areas and a plurality of second subpixel areas. In the process, a patterned anode is formed on a substrate and a non-patterned continuous hole injection layer is formed over the anode. There is substantially no crosstalk observable between the first subpixels and the second subpixels. There is also provided the above process with the additional steps of forming a non-patterned continuous primer layer over the hole injection layer, depositing a first electroluminescent material from a first liquid composition in the first subpixel areas, depositing a second electroluminescent material from a second liquid composition in the second subpixel areas, and depositing a cathode. The first and second electroluminescent materials emit light of different colors.
    Type: Application
    Filed: June 5, 2007
    Publication date: January 24, 2008
    Inventors: William Feehery, Dennis Walker, Stephen Sorich, Charles MacPherson, Alberto Goenaga, Gordana Srdanov
  • Publication number: 20070278501
    Abstract: An electronic device made by a process that includes forming a first layer over a substrate and placing a first liquid composition over a first portion of the first layer. The first liquid composition includes at least a first guest material and a first liquid medium. The first liquid composition comes in contact with the first layer and a substantial amount of the first guest material intermixes with the first layer. An electronic device includes a substrate and a continuous first layer overlying the substrate. The continuous layer includes a first portion in which an electronic component lies and a second portion where no electronic component lies. The first portion is at least 30 nm thick and includes a first guest material, and the second portion is no more than 40 nm thick.
    Type: Application
    Filed: August 17, 2007
    Publication date: December 6, 2007
    Inventors: CHARLES MACPHERSON, GORDANA SRDANOV, MATTHEW STAINER, GANG YU
  • Patent number: 7268006
    Abstract: A process for forming an electronic device includes forming a first layer over a substrate and placing a first liquid composition over a first portion of the first layer. The first liquid composition includes at least a first guest material and a first liquid medium. The first liquid composition comes in contact with the first layer and a substantial amount of the first guest material intermixes with the first layer. An electronic device includes a substrate and a continuous first layer overlying the substrate. The continuous layer includes a first portion in which an electronic component lies and a second portion where no electronic component lies. The first portion is at least 30 nm thick and includes a first guest material, and the second portion is no more than 40 nm thick.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: September 11, 2007
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Charles Douglas Macpherson, Gordana Srdanov, Matthew Stainer, Gang Yu
  • Publication number: 20070181944
    Abstract: An electronic device can include a first radiation region, a second radiation region spaced apart from the first radiation region, and an insulating region. The insulating region can have a first side and a second side opposite the first side. The first radiation region can lie immediately adjacent to the first side, and the second radiation region can lie immediately adjacent to the second side. Within the insulating region, no other radiation region may lie between the first and second radiation regions, and the insulating region can include an insulating layer that includes a plurality of openings. In another aspect, a process for forming the electronic device can include patterning an insulating layer.
    Type: Application
    Filed: December 22, 2006
    Publication date: August 9, 2007
    Inventors: Charles Macpherson, Gordana Srdanov, Gang Yu
  • Patent number: 7226799
    Abstract: The invention provides methods for the production of full-color, subpixellated organic electroluminescent (EL) devices. Substrates used in the methods of the invention for production of EL devices comprise wells wherein the walls of the wells do not require surface treatment prior to deposition of electroluminescent material. Also provided are EL devices produced by the methods described herein.
    Type: Grant
    Filed: August 19, 2005
    Date of Patent: June 5, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Gang Yu, Gordana Srdanov, Matthew Stainer, Jeffrey Glenn Innocenzo, Runguang Sun
  • Publication number: 20070096640
    Abstract: The invention provides methods for the production of full-color, subpixellated organic electroluminescent (EL) devices. Substrates used in the methods of the invention for production of EL devices comprise wells wherein the walls of the wells do not require surface treatment prior to deposition of electroluminescent material. Also provided are EL devices produced by the methods described herein.
    Type: Application
    Filed: December 12, 2006
    Publication date: May 3, 2007
    Inventors: Gang Yu, Gordana Srdanov, Matthew Stainer, Jeffrey Innocenzo, Runguang Sun
  • Publication number: 20070075626
    Abstract: An electronic device includes a substrate, a first layer, a first pixel, and a patterned reactive surface-active layer. The first pixel includes a first pixel driving circuit that overlies the substrate and includes a first electronic component. The first electronic component includes a first electrode and a second layer. The first electrode overlies at least a part of the first pixel driving circuit. The patterned reactive surface-active layer has a lower surface energy than the first layer. A process for forming an electronic device includes forming a first pixel driving circuit over a substrate, forming a first electrode of a first electronic component over the substrate, forming a first layer, forming a patterned reactive surface-active layer, and forming a second layer over the first electrode of the first electronic component.
    Type: Application
    Filed: June 5, 2006
    Publication date: April 5, 2007
    Inventors: Gang Yu, Charles Lang, Stephen Sorich, Alberto Goenaga, Matthew Stainer, Paul Sant, Dennis Walker, Charles MacPherson, Gordana Srdanov
  • Publication number: 20060228466
    Abstract: A liquid media is dispensed by a precision stream onto a substrate to form a pattern. The precision stream is controlled by pressure, liquid media composition, orifice size. Additionally, other factors such as height from the orifice form the substrate and a relative movement between the precision stream and the substrate control characteristics of the pattern disposed on the substrate.
    Type: Application
    Filed: December 8, 2005
    Publication date: October 12, 2006
    Inventors: Gang Yu, Gordana Srdanov, Jorma Peltola
  • Patent number: 7105633
    Abstract: This invention discloses a class of soluble poly(arylene-oxadiazole) polymers and copolymers comprising at least 20 repeat units, which may be the same or different, represented by the formula: wherein Arom can be a fluorene group, an aromatic hydrocarbon ring, an aromatic C2+ heterocyclic ring, or two aromatic rings linked by a single bond, ethenyl bond, or ethynyl bond. A process for preparing the polymers and copolymers by reacting dicarboxylic acids and hydrazine salt is provided. The polymers are useful in electroluminescent devices, photovoltaic cells, and diodes.
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: September 12, 2006
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Hailiang Wang, Gang Yu, Gordana Srdanov
  • Patent number: 7098060
    Abstract: The invention provides methods for the production of full-color, subpixellated organic electroluminescent (EL) devices. Substrates used in the methods of the invention for production of EL devices comprise wells wherein the walls of the wells do not require surface treatment prior to deposition of electroluminescent material. Also provided are EL devices produced by the methods described herein.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: August 29, 2006
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Gang Yu, Gordana Srdanov, Matthew Stainer, Jeffrey Glenn Innocenzo, Runguang Sun
  • Publication number: 20060145167
    Abstract: A process for forming an electronic device includes forming a first layer over a substrate and placing a first liquid composition over a first portion of the first layer. The first liquid composition includes at least a first guest material and a first liquid medium. The first liquid composition comes in contact with the first layer and a substantial amount of the first guest material intermixes with the first layer. An electronic device includes a substrate and a continuous first layer overlying the substrate. The continuous layer includes a first portion in which an electronic component lies and a second portion where no electronic component lies. The first portion is at least 30 nm thick and includes a first guest material, and the second portion is no more than 40 nm thick.
    Type: Application
    Filed: December 30, 2004
    Publication date: July 6, 2006
    Inventors: Charles Macpherson, Gordana Srdanov, Matthew Stainer, Gang Yu
  • Publication number: 20050285517
    Abstract: The invention provides methods for the production of full-color, subpixellated organic electroluminescent (EL) devices. Substrates used in the methods of the invention for production of EL devices comprise wells wherein the walls of the wells do not require surface treatment prior to deposition of electroluminescent material. Also provided are EL devices produced by the methods described herein.
    Type: Application
    Filed: August 19, 2005
    Publication date: December 29, 2005
    Inventors: Gang Yu, Gordana Srdanov, Matthew Stainer, Jeffrey Innocenzo, Runguang Sun