Patents by Inventor Charles D. Lang
Charles D. Lang 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).
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Publication number: 20160020394Abstract: A printing operation using a backplane having at least one topographical feature located in a non-display area of the backplane. Continuous liquid printing produces layers contacting the at least one topographical feature, and these layers each exhibit uniform thickness. Non-display areas of the backplane are subsequently removed after completion of the printing operation to yield uniform layers within display areas of the backplane.Type: ApplicationFiled: July 17, 2015Publication date: January 21, 2016Inventor: CHARLES D. LANG
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Patent number: 9138771Abstract: An apparatus and method for solution coating layers onto a substrate of an electronic device. A slot die coater in conjunction with a vacuum assist device is used in priming, coating and cleaning stations to produce thin layers having performance advantages over competing technologies.Type: GrantFiled: May 19, 2009Date of Patent: September 22, 2015Assignee: E I DU PONT DE NEMOURS AND COMPANYInventors: Charles D. Lang, Tami Janene Faircloth
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Patent number: 8950328Abstract: Methods for fabrication of organic electronic devices are described.Type: GrantFiled: December 20, 2005Date of Patent: February 10, 2015Assignee: E I du Pont de Nemours and CompanyInventor: Charles D. Lang
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Patent number: 8945426Abstract: 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: GrantFiled: March 12, 2010Date of Patent: February 3, 2015Assignees: E I du Pont de Nemours and Company, Dupont Displays IncInventors: 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
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Publication number: 20130256603Abstract: Compositions are provided for improved liquid deposition of electroactive material onto low surface energy layers. The liquid composition includes at least one organic electroactive material in a liquid medium. The liquid medium includes (a) at least 20% by volume, based on the total volume of the liquid medium, of a first solvent and (b) at least 1% by volume, based on the total volume of the liquid medium, of a liquid organic additive. The liquid medium pins on the underlying layer as determined by a dynamic receding contact angle test. The first solvent retracts on the underlying layer as determined by the dynamic receding contact angle test.Type: ApplicationFiled: December 20, 2011Publication date: October 3, 2013Applicant: E I DU PONT DE NEMOURS AND COMPANY DUPONT DISPLAYS INCInventors: Reid John Chesterfield, Charles D. Lang, Henry J. Sarria, Hjalti Skulason
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Patent number: 8383192Abstract: There is provided a process for forming a contained second layer over a first layer, including the steps: forming the first layer having a first surface energy; treating the first layer with a reactive surface-active composition to form a treated first layer having a second surface energy which is lower than the first surface energy; exposing the treated first layer with radiation; and forming the second layer. There is also provided an organic electronic device made by the process.Type: GrantFiled: April 5, 2011Date of Patent: February 26, 2013Assignee: E. I. du Pont de Nemours and CompanyInventors: Charles D. Lang, Stephen Sorich, Charles Kenneth Taylor, Douglas Robert Anton, Alberto Goenaga, Paul Anthony Sant
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Patent number: 8309376Abstract: There is provided a process for forming a contained second layer over a first layer. The process comprises forming the first layer having a first surface energy and then treating the first layer with a photocurable surface-active composition which is a fluorinated ester or fluorinated imide of an ?,?-unsaturated polyacid; exposing the photocurable surface-active composition patternwise with radiation resulting in exposed areas and unexposed areas; developing the photocurable surface-active composition to remove the unexposed areas resulting in a first layer having untreated portions in the unexposed areas and treated portions in the exposed areas, where the treated portions have a second surface energy that is lower than the first surface energy; and forming the second layer on the untreated portions of the first layer. There is also provided an organic electronic device made by the process.Type: GrantFiled: October 24, 2008Date of Patent: November 13, 2012Assignee: E I du Pont de Nemours and CompanyInventors: Charles D. Lang, Paul Anthony Sant, Jerald Feldman, Steven Dale Ittel, Stephan James McLain
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Publication number: 20120175596Abstract: 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: ApplicationFiled: March 12, 2010Publication date: July 12, 2012Applicant: E. I. DU PONT DE NEMOURS AND COMPANYInventors: 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
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Patent number: 8124172Abstract: There is provided a process for forming a contained second layer over a first layer, including the steps: forming the first layer having a first surface energy; treating the first layer with a reactive surface-active composition to form a treated first layer having a second surface energy which is lower than the first surface energy; exposing the treated first layer with radiation; and forming the second layer. There is also provided an organic electronic device made by the process.Type: GrantFiled: April 10, 2006Date of Patent: February 28, 2012Assignees: E.I. du Pont de Nemours and CompanyInventors: Charles D. Lang, Stephen Sorich, Charles K. Taylor, Douglas R. Anton, Alberto Goenaga, Paul A. Sant
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Patent number: 8040048Abstract: A process of forming an electronic device is disclosed. An organic device layer is formed. The organic device layer includes a charge-selective material and a radiation sensitizer and has a first electrical conductivity and a first surface energy. First portions of the organic device layer are selectively exposed to radiation. The electrical conductivity and surface energy of the first portions of the organic device layer are modified.Type: GrantFiled: December 11, 2008Date of Patent: October 18, 2011Inventors: Charles D. Lang, Dmitry Kolosov, Johann Thomas Trujillo
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Patent number: 8007590Abstract: There is provided a portable substrate carrier enclosure. The carrier enclosure has a carrier support; a displaceable cover; spacers between the support and cover; a gas inlet; and a removable lid. There is also provided an assembly and a process for depositing an air-sensitive material onto a substrate using the portable substrate carrier enclosure.Type: GrantFiled: August 3, 2007Date of Patent: August 30, 2011Assignee: E.I. du Pont de Nemours and CompanyInventors: Charles D. Lang, Joseph Anthony Perrotto, Thomas Patrick Daly, James Nelson Tilton
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Publication number: 20110183268Abstract: There is provided a process for forming a contained second layer over a first layer, including the steps: forming the first layer having a first surface energy; treating the first layer with a reactive surface-active composition to form a treated first layer having a second surface energy which is lower than the first surface energy; exposing the treated first layer with radiation; and forming the second layer. There is also provided an organic electronic device made by the process.Type: ApplicationFiled: April 5, 2011Publication date: July 28, 2011Applicant: E. I. DU PONT DE NEMOURS AND COMPANY DUPONT DISPLAYS INCInventors: Charles D. Lang, Stephen Sorich, Charles Kenneth Taylor, Douglas Robert Anton, Alberto Goenaga, Paul Anthony Sant
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Patent number: 7947536Abstract: There is provided herein a process for forming an encapsulated electronic device. The device has active areas and sealing areas on a substrate. The process includes providing the substrate; forming a discontinuous pattern of a material having a first surface energy on at least a portion of the sealing areas; forming multiple active layers, where at least one active layer is formed by liquid deposition from a liquid medium having a surface energy greater than the first surface energy; providing an encapsulation assembly; and bonding the encapsulation assembly to the substrate in the sealing areas. Also provided are devices formed by the disclosed processes.Type: GrantFiled: November 26, 2008Date of Patent: May 24, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Nigel Morton Coe, Kyle D. Frischknecht, Charles D. Lang, Matthew Stainer, Raymond S. Pflanzer
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Publication number: 20110092076Abstract: An apparatus and method for vapor phase deposition of a reactive surface area (RSA) material onto a substrate of an electronic device. The vapor phase deposition is conducted at ambient pressures in air, and provides capture of residual vapor to minimize environmental release of RSA and other constituents used in the processing.Type: ApplicationFiled: May 19, 2009Publication date: April 21, 2011Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Charles D. Lang, James Daniel Tremel, Paul Anthony Sant, Stephen Sorich, David K. Flattery, Gary A. Johansson, Jerald Feldman, Steven Dale Ittel, George Simpson
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Publication number: 20110086164Abstract: An apparatus and method for solution coating layers onto a substrate of an electronic device. A slot die coater in conjunction with a vacuum assist device is used in priming, coating and cleaning stations to produce thin layers having performance advantages over competing technologies.Type: ApplicationFiled: May 19, 2009Publication date: April 14, 2011Inventors: Charles D. Lang, Tami Janene Faircloth
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Publication number: 20110081735Abstract: There is provided herein a process for forming an encapsulated electronic device. The device has active areas and sealing areas on a substrate. The process includes providing the substrate; forming a discontinuous pattern of a material having a first surface energy on at least a portion of the sealing areas; forming multiple active layers, where at least one active layer is formed by liquid deposition from a liquid medium having a surface energy greater than the first surface energy; providing an encapsulation assembly; and bonding the encapsulation assembly to the substrate in the sealing areas. Also provided are devices formed by the disclosed processes.Type: ApplicationFiled: November 26, 2008Publication date: April 7, 2011Inventors: Nigel Morton Coe, Kyle D. Frischknecht, Charles D. Lang, Matthew Stainer, Raymond S. Pflanzer
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Patent number: 7838195Abstract: There is provided an essentially planar test substrate for non-contact printing. The substrate has a first layer having a first surface energy and having a planar measurement portion. A liquid containment pattern is over at least the measurement portion of the first layer. The liquid containment pattern has a second surface energy that is different from the first surface energy. The measurement portion of the first layer and the liquid containment pattern together are substantially planar.Type: GrantFiled: June 7, 2007Date of Patent: November 23, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Charles D. Lang, Nigel Morton Coe, Stephen Sorich, Nageswara Rao Tadepalli
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Publication number: 20100213454Abstract: There is provided a process for forming a contained second layer over a first layer. The process comprises forming the first layer having a first surface energy and then treating the first layer with a photocurable surface-active composition which is a fluorinated ester or fluorinated imide of an ?,?-unsaturated polyacid; exposing the photocurable surface-active composition patternwise with radiation resulting in exposed areas and unexposed areas; developing the photocurable surface-active composition to remove the unexposed areas resulting in a first layer having untreated portions in the unexposed areas and treated portions in the exposed areas, where the treated portions have a second surface energy that is lower than the first surface energy; and forming the second layer on the untreated portions of the first layer. There is also provided an organic electronic device made by the process.Type: ApplicationFiled: October 24, 2008Publication date: August 26, 2010Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Charles D. Lang, Paul Anthony Sant, Jerald Feldman, Steven Dale Ittel, Stephan James McLain
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Patent number: 7736540Abstract: Emulsions comprising an active material, a solvent for dissolving the active material, and a wetting fluid, wherein the active material is sparingly soluble in the wetting fluid, are provided, and methods for making the same.Type: GrantFiled: December 20, 2005Date of Patent: June 15, 2010Assignee: E. I. du Pont de Nemours and CompanyInventor: Charles D. Lang
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Patent number: 7554112Abstract: Organic electronic devices that include dummy electrodes are described, along with methods for using such devices.Type: GrantFiled: December 29, 2005Date of Patent: June 30, 2009Assignee: E. I. du Pont de Nemours and CompanyInventors: Charles D. Lang, Johann Thomas Trujillo, Nigel Morton Coe