Patents by Inventor Yiliang Wu

Yiliang Wu 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).

  • DIELECTRIC COMPOSITION
    Publication number: 20120141757
    Abstract: An electronic device, such as a thin-film transistor, includes a substrate and a dielectric layer formed from a dielectric composition. The dielectric composition comprises a dielectric material and a low surface tension additive. The low surface tension additive allows for the formation of a thin, smooth dielectric layer with fewer pinholes and enhanced device yield. In particular embodiments, the dielectric material comprises a lower-k dielectric material and a higher-k dielectric material. When deposited, the lower-k dielectric material and the higher-k dielectric material form separate phases.
    Type: Application
    Filed: December 1, 2010
    Publication date: June 7, 2012
    Applicant: XEROX CORPORATION
    Inventors: Yiliang Wu, Yulin Wang, Ping Liu, Nan-Xing Hu, Anthony James Wigglesworth
  • DIELECTRIC COMPOSITION FOR THIN-FILM TRANSISTORS
    Publication number: 20120142515
    Abstract: An electronic device, such as a thin-film transistor, includes a substrate and a dielectric layer formed from a dielectric composition. The dielectric composition includes a dielectric material, a crosslinking agent, and a thermal acid generator. In particular embodiments, the dielectric material comprises a lower-k dielectric material and a higher-k dielectric material. When deposited, the lower-k dielectric material and the higher-k dielectric material form separate phases. The thermal acid generator allows the dielectric layer to be cured at relatively lower temperatures and/or shorter time periods, permitting the selection of lower-cost substrate materials that would otherwise be deformed by the curing of the dielectric layer.
    Type: Application
    Filed: December 1, 2010
    Publication date: June 7, 2012
    Applicant: XEROX CORPORATION
    Inventors: Yiliang Wu, Ping Liu, Anthony James Wigglesworth, Nan-Xing Hu
  • Electronic device
    Patent number: 8164089
    Abstract: Electronic devices, such as organic thin film transistors, with improved mobility are disclosed. The semiconducting layer comprises layers or striations of an organic semiconductor and graphene, including alternating layers/striations of such materials. The organic semiconductor and graphene layers interact well together because both materials form lamellar sheets. The presence of graphene enhances mobility by correcting molecular packing defects in the organic semiconductor layers, and the conductivity of graphene can be controlled. Finally, both materials are flexible, allowing for flexible semiconductor layers and transistors.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: April 24, 2012
    Assignee: Xerox Corporation
    Inventors: Yiliang Wu, Nan-Xing Hu, Ping Liu, Hadi K. Mahabadi, Paul Smith, Giuseppa Baranyi
  • Silver nanoparticle ink composition for highly conductive features with enhanced mechanical properties
    Patent number: 8158032
    Abstract: A conductive ink composition comprising organic-stabilized silver nanoparticles and a solvent, and a polyvinyl alcohol derivative resin of Formula (1) wherein R1 is a chemical bond or a divalent hydrocarbon linkage having from about 1 to about 20 carbons; R2 and R3 are independently an alkyl, an aromatic or substituted aromatic group having from about 1 to about 20 carbon atoms; x, y and z represent the proportion of the corresponding repeat units respectively expressed as a weight percent, wherein each repeat unit is randomly distributed along polymer chain, and the sum of x, y and z is about 100 weight percent, and wherein the polyvinyl alcohol derivative resin is present in an amount of from 0.1 to about 5 weight percent of the ink composition.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: April 17, 2012
    Assignee: Xerox Corporation
    Inventors: Ping Liu, Yiliang Wu, Nan-Xing Hu
  • Dithioketopyrrolopyrrole-based polymers
    Patent number: 8158744
    Abstract: A polymer of Formula (I) wherein R1, R2, Ar1, Ar2, and n are as described herein. The polymer may be used in a semiconducting layer of an electronic device.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: April 17, 2012
    Assignee: Xerox Corporation
    Inventors: Yiliang Wu, Ping Liu, Anthony James Wigglesworth, Nan-Xing Hu
  • Electronic devices
    Patent number: 8153755
    Abstract: An electronic device, such as a thin film transistor containing a semiconductor of the Formula: wherein R, R? and R? are, for example, independently hydrogen, a suitable hydrocarbon, a suitable hetero-containing group, a halogen, or mixtures thereof; and n represents the number of repeating units.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: April 10, 2012
    Assignee: Xerox Corporation
    Inventors: Beng S. Ong, Hualong Pan, Yuning Li, Yiliang Wu, Ping Liu
  • Organic thin-film transistors
    Patent number: 8154013
    Abstract: A thin-film transistor comprises a semiconducting layer comprising a semiconducting material selected from Formula (I) or (II): wherein X, R1, R2, R3, R4, R5 a, b, and n are as described herein. Semiconducting compositions of Formula (I) or (II) are also described.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: April 10, 2012
    Assignee: Xerox Corporation
    Inventors: Yuning Li, Yiliang Wu, Ping Liu, Paul F. Smith
  • Dielectric structure having lower-k and higher-k materials
    Patent number: 8154080
    Abstract: An electronic device including in any sequence: (a) a semiconductor layer; and (b) a dielectric structure comprising a lower-k dielectric polymer and a higher-k dielectric polymer, wherein the lower-k dielectric polymer is in a lower concentration than the higher-k dielectric polymer in a region of the dielectric structure closest to the semiconductor layer.
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: April 10, 2012
    Assignee: Xerox Corporation
    Inventors: Yiliang Wu, Paul F Smith
  • CONDUCTIVE THICK METAL ELECTRODE FORMING METHOD
    Publication number: 20120070570
    Abstract: A method of forming conductive features on a substrate, the method includes, filling a flexible stamp with a metal nanoparticle composition, depositing the metal nanoparticle composition onto the substrate, and heating the deposited metal nanoparticle composition during or after the depositing to form the conductive features.
    Type: Application
    Filed: September 16, 2010
    Publication date: March 22, 2012
    Applicant: XEROX CORPORATION
    Inventors: Woo Soo KIM, Ping LIU, Yiliang WU, Nan-Xing HU
  • Self-assembly monolayer modified printhead
    Patent number: 8136922
    Abstract: Described herein are printheads for inkjet printing and, more specifically, printheads modified with a self-assembly monolayer (SAM). Also described are processes for making and using the printheads as well as processes for forming patterns and images on a substrate including jetting inkjet inks or jettable materials using a printhead for inkjet printing that has been modified with a self-assembly monolayer.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: March 20, 2012
    Assignee: Xerox Corporation
    Inventors: Yiliang Wu, Ping Liu, Nan-Xing Hu
  • Thin-film transistor
    Patent number: 8134144
    Abstract: There is provided herein a performance-enhancing composition comprising inorganic nanoparticles dispersed in a polymer selected from the group consisting of polysiloxane, polysilsesquioxane, and mixtures thereof. This composition, when applied to a thin-film transistor, such as a bottom-gate thin-film transistor, as an overcoat or top layer, improves the carrier mobility and current on/off ratio of the thin film transistor. Also provided is the thin-film transistor produced utilizing this process and/or composition.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: March 13, 2012
    Assignee: Xerox Corporation
    Inventors: Yiliang Wu, Jessica Sacripante, Beng S. Ong, Paul Smith
  • Continuous Process For Preparing Nanodispersions Using An Ultrasonic Flow-Through Heat Exchanger
    Publication number: 20120049163
    Abstract: Described is a continuous process for preparing nanodispersions including providing a composition comprising a liquid and a solute; heating the composition to dissolution of the solute to form a solution comprising the solute dissolved in the liquid; directing the heated solution through a continuous tube wherein the continuous tube has a first end for receiving the solution, a continuous flow-through passageway disposed in an ultrasonic heat exchanger, and a second end for discharging a product stream; treating the heated solution as the solution passes through the continuous flow-through passageway disposed in the ultrasonic heat exchanger to form the product stream comprising nanometer size particles in the liquid; optionally, collecting the product stream in a product receiving vessel; and optionally, filtering the product stream.
    Type: Application
    Filed: August 31, 2010
    Publication date: March 1, 2012
    Applicant: XEROX CORPORATION
    Inventors: Alan Edward John Toth, Santiago Faucher, Yiliang Wu, Marko Saban
  • SILVER NANOPARTICLE INK COMPOSITION FOR HIGHLY CONDUCTIVE FEATURES WITH ENHANCED MECHANICAL PROPERTIES
    Publication number: 20120043512
    Abstract: A conductive ink composition comprising organic-stabilized silver nanoparticles and a solvent, and a polyvinyl alcohol derivative resin of Formula (1) wherein R1 is a chemical bond or a divalent hydrocarbon linkage having from about 1 to about 20 carbons; R2 and R3 are independently an alkyl, an aromatic or substituted aromatic group having from about 1 to about 20 carbon atoms; x, y and z represent the proportion of the corresponding repeat units respectively expressed as a weight percent, wherein each repeat unit is randomly distributed along polymer chain, and the sum of x, y and z is about 100 weight percent, and wherein the polyvinyl alcohol derivative resin is present in an amount of from 0.1 to about 5 weight percent of the ink composition.
    Type: Application
    Filed: August 20, 2010
    Publication date: February 23, 2012
    Applicant: XEROX CORPORATION
    Inventors: Ping Liu, Yiliang Wu, Nan-Xing Hu
  • THIN-FILM TRANSISTORS
    Publication number: 20120034736
    Abstract: A thin film transistor having a semiconducting layer with improved flexibility and/or mobility is disclosed. The semiconducting layer comprises a semiconducting polymer and insulating polymer. Methods for forming and using such thin-film transistors are also disclosed.
    Type: Application
    Filed: October 20, 2011
    Publication date: February 9, 2012
    Applicant: Xerox Corporation
    Inventors: Yiliang Wu, Hualong Pan, Ping Liu, Yuning Li, Paul F. Smith
  • Substituted indolocarbazoles
    Patent number: 8110690
    Abstract: A substituted indolocarbazole comprising at least one optionally substituted thienyl.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: February 7, 2012
    Assignee: Xerox Corporation
    Inventors: Yiliang Wu, Beng S Ong, Yu Qi, Yuning Li
  • Organic thin film transistors
    Patent number: 8106387
    Abstract: Organic thin film transistors with improved mobility are disclosed. The transistor contains two interfacial layers between the dielectric layer and the semiconducting layer. One interfacial layer is formed from a siloxane polymer or silsesquioxane polymer. The other interfacial layer is formed from an alkyl-containing silane of Formula (I): where R? is alkyl having from about 1 to about 24 carbon atoms; R? is alkyl having from about 1 to about 24 carbon atoms, halogen, alkoxy, hydroxyl, or amino; L is halogen, oxygen, alkoxy, hydroxyl, or amino; k is 1 or 2; and m is 1 or 2.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: January 31, 2012
    Assignee: Xerox Corporation
    Inventors: Yiliang Wu, Ping Liu, Yuning Li, Paul F. Smith
  • Methods for preparing benzodithiophenes
    Patent number: 8097735
    Abstract: Methods of adding substituents to a benzodithiophene are disclosed. A benzodithiophene is reacted with a reagent to directly add the substituent to the benzene core of the benzodithiophene. This method eliminates steps from prior process and eliminates the need for hydrogenation, allowing for a safer and more scaleable process. The resulting benzodithiophenes are suitable for use in semiconductor polymers and have no loss of performance.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: January 17, 2012
    Assignee: Xerox Corporation
    Inventors: Anthony James Wigglesworth, Yiliang Wu, Ping Liu, Nan-Xing Hu
  • Wax encapsulated electronic devices
    Patent number: 8089062
    Abstract: An electronic device comprising: a substrate, an active layer, and an encapsulating layer comprising at least one wax.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: January 3, 2012
    Assignee: Xerox Corporation
    Inventors: Yiliang Wu, Beng S. Ong, Ping Liu
  • Electronic device having a dielectric layer
    Patent number: 8084765
    Abstract: An electronic device, such as a thin film transistor, is disclosed having a dielectric layer formed from a composition comprising a compound having at least one phenol group and at least one group containing comprising silicon. The resulting dielectric layer has good electrical properties.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: December 27, 2011
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Yiliang Wu, Yuning Li, Beng S. Ong
  • Silver nanoparticle composition comprising solvents with specific hansen solubility parameters
    Publication number: 20110305821
    Abstract: A metal nanoparticle composition includes an organic-stabilized metal nanoparticle and a solvent in which the solvent selected has the following Hansen solubility parameters: a dispersion parameter of about 16 MPa0.5 or more, and a sum of a polarity parameter and a hydrogen bonding parameter of about 8.0 MPa0.5 or less. The metal nanoparticle composition is suitable for printing conductive lines that are uniform, smooth and narrow on various substrate surfaces. The metal nanoparticle composition is able to form printed conductive features having a coffee ring effect ratio of about 1.2 to about 0.8, a surface roughness of about 15 or less and a line width of about 200 microns or less.
    Type: Application
    Filed: June 9, 2010
    Publication date: December 15, 2011
    Applicant: XEROX CORPORATION
    Inventors: Yiliang Wu, Yulin Wang, Mahya Mohktari, Roger E. Gaynor, Nan-Xing Hu, Marko D. Saban