Patents by Inventor Da REN

Da REN 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: 8574117
    Abstract: This invention discloses a mechanism with a component position adjusting function, comprising a drive unit, a drive shaft, a plate body, a drive wheel, at least one passive component and a brake. The drive unit performs a forward or reverse rotating shift and drives the drive shaft to rotate. The unidirectional component has a through hole, and disposes at the plate body. An end of the drive shaft is passed through the through hole and exposed from the plate body. The drive shaft synchronously drives the plate body and the drive wheel to rotate forward. The passive component is arranged at the plate body and contacted with the drive shaft with synchronously drives and rotates the passive component. The plate body remains still through the rotation of the unidirectional component and the contact of the brake with the plate body.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: November 5, 2013
    Assignee: National Applied Research Laboratories
    Inventors: Shian-Wen Chang, Chun-Jen Weng, Da-Ren Liu
  • Publication number: 20130256262
    Abstract: An in situ manufacturing process monitoring system of extreme smooth thin film and method thereof, comprising a coating device for coating a thin film on at least one substrate during a coating process, an ion figuring device for processing a surface polishing process on the thin film, a control device electrically coupled to the coating device and the ion figuring device respectively for controlling the coating device and the ion figuring device processing the coating process and surface polishing process by adjusting at least one device parameter of the coating device and the ion figuring device, and an in situ monitoring device electrically coupled to the control device for in situ monitoring at least one optical parameter of the thin film.
    Type: Application
    Filed: October 29, 2012
    Publication date: October 3, 2013
    Applicant: National Applied Research Laboratories
    Inventors: Chien-Nan Hsiao, Po-Kai Chiu, Da-Ren Liu, James Su, Fong-Zhi Chen
  • Publication number: 20130164661
    Abstract: A method for making a retardation film includes: (a) forming a photo-alignment layer on a substrate; (b) exposing the photo-alignment layer such that first and second regions of the alignment surface are oriented in a first alignment direction; (c) disposing a patterned mask over the photo-alignment layer such that the first regions of the alignment surface are shielded; (d) exposing the second regions such that the second regions are oriented in a second alignment direction, and the first regions remain oriented in the first alignment direction; (e) coating liquid crystal molecules over the alignment surface; and (f) curing the liquid crystal molecules.
    Type: Application
    Filed: September 14, 2012
    Publication date: June 27, 2013
    Applicant: FAR EASTERN NEW CENTURY CORPORATION
    Inventors: Chien-Cheng Chang, Chiu-Fang Chen, Da-Ren Chiou, Wei-Che Hung
  • Publication number: 20130125815
    Abstract: A plasma enhanced atomic layer deposition (PEALD) system used to form thin films on substrates includes a plasma chamber, a processing chamber, two or more ring units and a control piece. The plasma chamber includes an outer and an inner quartz tubular units, whose central axes are aligned with each other. Therefore, plasma is held and concentrated in a cylindrical space formed between the outer and outer quartz tubular units. Due to the first and second through holes, the plasma flow may be more evenly distributed on most of the surface of the substrate to form evenly distributed thin films and nano particles on the substrate. In addition, due to the alignment and misalignment between the first and second through holes, the plasma generated in the plasma chamber may be swiftly allowed or disallowed to enter to the processing chamber to prevent the precursor from forming a CVD.
    Type: Application
    Filed: March 6, 2012
    Publication date: May 23, 2013
    Inventors: Bo-Heng Liu, Chi-Chung Kei, Meng-Yen Tsai, Wen-Hao Cho, Chih-Chieh Yu, Chien-Nan Hsiao, Da-Ren Liu
  • Publication number: 20130107190
    Abstract: A method of preparing a composite optical retarder is provided. A first and a second liquid crystal coating materials are respectively disposed on opposite surfaces of a photoalignment film to respectively form a first and a second optical retarders. The composite optical retarder having the photoalignment film sandwiched by the first and the second optical retarders is thus obtained.
    Type: Application
    Filed: February 8, 2012
    Publication date: May 2, 2013
    Applicant: Far Eastern New Century Corporation
    Inventors: Da-Ren CHIOU, Tzu-Ying CHEN, Wei-Che HUNG, De-Ling HSU, Chiu-Fang CHEN
  • Publication number: 20130064985
    Abstract: A method for making a retarder includes: (a) forming a photocurable layer on a substrate, the photocurable layer including at least one photocurable prepolymer that has a plurality of reactive functional groups and a functional group equivalent weight ranging from 70 to 700 g/mol; (b) covering partially the photocurable layer using a patterned mask; (c) exposing the photocurable layer through the patterned mask; (d) removing the patterned mask; (e) exposing the photocurable layer to cure second regions of the photocurable layer so as to form a microstructure; (f) forming an alignment layer on the microstructure; (g) forming a liquid crystal layer on the alignment layer; and (h) curing the liquid crystal layer.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 14, 2013
    Applicant: FAR EASTERN NEW CENTURY CORPORATION
    Inventors: Da-Ren CHIOU, Wei-Che HUNG, Chiu-Fang CHEN, Yu-June WU
  • Publication number: 20130045830
    Abstract: This invention discloses a mechanism with a component position adjusting function, comprising a drive unit, a drive shaft, a plate body, a drive wheel, at least one passive component and a brake. The drive unit performs a forward or reverse rotating shift and drives the drive shaft to rotate. The unidirectional component has a through hole, and disposes at the plate body. An end of the drive shaft is passed through the through hole and exposed from the plate body. The drive shaft synchronously drives the plate body and the drive wheel to rotate forward. The passive component is arranged at the plate body and contacted with the drive shaft with synchronously drives and rotates the passive component. The plate body remains still through the rotation of the unidirectional component and the contact of the brake with the plate body.
    Type: Application
    Filed: September 23, 2011
    Publication date: February 21, 2013
    Inventors: Shian-Wen CHANG, Chun-Jen Weng, Da-Ren Liu
  • Publication number: 20120114903
    Abstract: A method for forming a microstructure includes: (a) forming a photocurable layer on a substrate, the photocurable layer including at least one photocurable compound that has a photocurable functional group equivalent weight ranging from 70 to 700 g/mol; (b) covering partially the photocurable layer using a patterned mask; (c) exposing the photocurable layer through the patterned mask using a first light source so that the photocurable layer is cured at first regions which are exposed; (d) removing the patterned mask; and (e) illuminating the photocurable layer using a second light source to cure second regions of the photocurable layer which have not been cured. The first and second regions have different surface heights and provide a surface roughness for the microstructure.
    Type: Application
    Filed: September 13, 2011
    Publication date: May 10, 2012
    Applicant: FAR EASTERN NEW CENTURY CORPORATION
    Inventors: Da-Ren Chiou, Wei-Che Hung, Shoh-Yue Lin, Chiu-Fang Chen, Tzu-Ying Chen
  • Publication number: 20120080218
    Abstract: The present invention pertains to a transparent conductive film including a conductive layer having different thicknesses so as to increase the optical transmittance while maintaining the conductivity of the transparent conductive film. The present invention also pertains to a process for the preparation of the above-mentioned transparent conductive film.
    Type: Application
    Filed: September 23, 2011
    Publication date: April 5, 2012
    Inventors: Da-Ren Chiou, Wei-Che Hung, Shih-Yueh Lin, Chiu-Fang Chen, Tzu-Ying Chen
  • Patent number: 8044350
    Abstract: An apparatus for measuring particle size distribution includes a charging device and a precipitator. The charging device includes a corona that generates charged ions in response to a first applied voltage, and a charger body that generates a low energy electrical field in response to a second applied voltage in order to channel the charged ions out of the charging device. The corona tip and the charger body are arranged relative to each other to direct a flow of particles through the low energy electrical field in a direction parallel to a direction in which the charged ions are channeled out of the charging device. The precipitator receives the plurality of particles from the charging device, and includes a disk having a top surface and an opposite bottom surface, wherein a predetermined voltage is applied to the top surface and the bottom surface to precipitate the plurality of particles.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: October 25, 2011
    Assignee: Washington University
    Inventors: Da-Ren Chen, Chaolong Qi
  • Patent number: 8028646
    Abstract: Methods and systems for coating at least a portion of a medical device (e.g., a stent structure) include providing a plurality of coating particles (e.g., monodisperse coating particles) in a defined volume. For example, the particles may be provided using one or more nozzle structures, wherein each nozzle structure includes at least one opening terminating at a dispensing end. The plurality of coating particles may be provided in the defined volume by dispensing a plurality of microdroplets having an electrical charge associated therewith from the dispensing ends of the one or more nozzle structures through use of a nonuniform electrical field between the dispensing ends and the medical device. Electrical charge is concentrated on the particle as the microdroplet evaporates. With a plurality of coating particles provided in the defined volume, such particles can be moved towards at least one surface of the medical device to form a coating thereon (e.g.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: October 4, 2011
    Assignee: Regents of the University of Minnesota
    Inventors: David Y. H. Pui, Da-Ren Chen
  • Publication number: 20110229627
    Abstract: Electrospray methods and systems for coating of objects (e.g., medical devices such as a stent structure) with selected types of coatings (e.g.
    Type: Application
    Filed: May 27, 2011
    Publication date: September 22, 2011
    Applicants: NANOCOPOEIA, INC., Regents of the University of Minnesota
    Inventors: ROBERT A. HOERR, JOHN V. CARLSON, DA-REN CHEN, DAVID Y.H. PUI
  • Publication number: 20110174902
    Abstract: Spraying apparatus and methods that employ multiple nozzle structures for producing multiple sprays of particles, e.g., nanoparticles, for various applications, e.g., pharmaceuticals, are provided. For example, an electrospray dispensing device may include a plurality of nozzle structures, wherein each nozzle structure is separated from adjacent nozzle structures by an interozzle distance. Sprays of particles are established from the nozzle structures by creating a nonuniform electrical field between the nozzle structures and an electrode electrically isolated therefrom.
    Type: Application
    Filed: March 29, 2011
    Publication date: July 21, 2011
    Applicant: Regents of the University of Minnesota
    Inventors: David Y.H. Pui, Da-Ren Chen
  • Patent number: 7972661
    Abstract: An electrospraying apparatus and/or method is used to coat particles. For example, a flow including at least one liquid suspension may be provided through at least one opening at a spray dispenser end. The flow includes at least particles and a coating material. A spray of microdroplets suspending at least the particles is established forward of the spray dispenser end by creating a nonuniform electrical field between the spray dispenser end and an electrode electrically isolated therefrom. The particles are coated with at least a portion of the coating material as the microdroplet evaporates. For example, the suspension may include biological material particles.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: July 5, 2011
    Assignee: Regents of the University of Minnesota
    Inventors: David Y. H. Pui, Da-Ren Chen
  • Publication number: 20110139970
    Abstract: Detection of individual objects using a light source and a whispering gallery mode (WGM) resonator. Light from the whispering gallery mode (WGM) resonator is analyzed. The presence of an object is determined based on mode splitting associated with the light received by the photodetector. For example, the presence of the object may be determined based on the distance between two whispering gallery modes and/or the linewidths of the two modes in a transmission spectrum. Alternatively, the presence of the object may be determined based on a beat frequency that is determined based on a heterodyne beat signal produced by combining split laser modes in the received light from a WGM microcavity laser.
    Type: Application
    Filed: December 13, 2010
    Publication date: June 16, 2011
    Applicant: WASHINGTON UNIVERSITY IN ST. LOUIS
    Inventors: Lina He, Jiangang Zhu, Sahin Kaya Ozdemir, Lan Yang, Da-Ren Chen
  • Patent number: 7951428
    Abstract: Electrospray methods and systems for coating of objects (e.g., medical devices such as a stent structure) with an open matrix coating. The open matrix coating is formed by electrospray using one or more nozzle structures each having at least an inner and outer opening. A first flow of a liquid spray composition is provided to the inner opening and a second flow of a liquid diluent composition is provided to the outer opening (e.g., the liquid diluent composition including at least one solvent, such as a composition having a dielectric constant equal to or greater than 10).
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: May 31, 2011
    Assignee: Regents of the University of Minnesota
    Inventors: Robert A. Hoerr, John V. Carlson, Da-Ren Chen, David Y. H. Pui
  • Publication number: 20100001184
    Abstract: An apparatus for measuring particle size distribution includes a charging device and a precipitator. The charging device includes a corona that generates charged ions in response to a first applied voltage, and a charger body that generates a low energy electrical field in response to a second applied voltage in order to channel the charged ions out of the charging device. The corona tip and the charger body are arranged relative to each other to direct a flow of particles through the low energy electrical field in a direction parallel to a direction in which the charged ions are channeled out of the charging device. The precipitator receives the plurality of particles from the charging device, and includes a disk having a top surface and an opposite bottom surface, wherein a predetermined voltage is applied to the top surface and the bottom surface to precipitate the plurality of particles.
    Type: Application
    Filed: December 1, 2008
    Publication date: January 7, 2010
    Applicant: Washington University in St. Louis
    Inventors: Da-Ren Chen, Chaolong Qi
  • Publication number: 20090266924
    Abstract: Spraying apparatus and methods that employ multiple nozzle structures for producing multiple sprays of particles, e.g., nanoparticles, for various applications, e.g., pharmaceuticals, are provided. For example, an electrospray dispensing device may include a plurality of nozzle structures, wherein each nozzle structure is separated from adjacent nozzle structures by an internozzle distance. Sprays of particles are established from the nozzle structures by creating a nonuniform electrical field between the nozzle structures and an electrode electrically isolated therefrom.
    Type: Application
    Filed: February 27, 2009
    Publication date: October 29, 2009
    Applicant: Regents of the University of Minnesota
    Inventors: David Y.H. Pui, Da-Ren Chen
  • Patent number: 7498063
    Abstract: Spraying apparatus and methods that employ multiple nozzle structures for producing multiple sprays of particles, e.g., nanoparticles, for various applications, e.g., pharmaceuticals, are provided. For example, an electrospray dispensing device may include a plurality of nozzle structures, wherein each nozzle structure is separated from adjacent nozzle structures by an internozzle distance. Sprays of particles are established from the nozzle structures by creating a nonuniform electrical field between the nozzle structures and an electrode electrically isolated therefrom.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: March 3, 2009
    Assignee: Regents of the University of Minnesota
    Inventors: David Y. H. Pui, Da-Ren Chen
  • Publication number: 20080141936
    Abstract: An electrospraying apparatus and/or method is used to coat particles. For example, a flow including at least one liquid suspension may be provided through at least one opening at a spray dispenser end. The flow includes at least particles and a coating material. A spray of microdroplets suspending at least the particles is established forward of the spray dispenser end by creating a nonuniform electrical field between the spray dispenser end and an electrode electrically isolated therefrom. The particles are coated with at least a portion of the coating material as the microdroplet evaporates. For example, the suspension may include biological material particles.
    Type: Application
    Filed: October 4, 2007
    Publication date: June 19, 2008
    Applicant: Regents of the University of Minnesota
    Inventors: David Y.H. Pui, Da-Ren Chen