Patents by Inventor Chang-Ching Tu

Chang-Ching Tu 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: 10508234
    Abstract: A hydroxyl-covered silicon quantum dot nanoparticle having a silicon core, a plurality of silicon quantum dots, and a plurality of hydrocarbon chains is illustrated. A first portion of a surface associated with the silicon core is passivated by a plurality of silicon hydroxyl groups (Si—OH). The silicon quantum dots are attached to a second portion of the surface associated with the silicon core. The hydrocarbon chains are bonded to each of the silicon quantum dots through a plurality of silicon carbide bonds (Si—C), wherein each termination of the hydrocarbon chains has a carbon hydroxyl group (C—OH), such that the hydroxyl-covered silicon quantum dot nanoparticle is thoroughly covered by the carbon hydroxyl groups (C—OH) and the silicon hydroxyl groups (Si—OH).
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: December 17, 2019
    Assignee: NATIONAL CHIAO TUNG UNIVERSITY
    Inventors: Chang-Ching Tu, Kuang-Po Chen, Yaw-Kuen Li
  • Publication number: 20170240808
    Abstract: A hydroxyl-covered silicon quantum dot nanoparticle having a silicon core, a plurality of silicon quantum dots, and a plurality of hydrocarbon chains is illustrated. A first portion of a surface associated with the silicon core is passivated by a plurality of silicon hydroxyl groups (Si—OH). The silicon quantum dots are attached to a second portion of the surface associated with the silicon core. The hydrocarbon chains are bonded to each of the silicon quantum dots through a plurality of silicon carbide bonds (Si—C), wherein each termination of the hydrocarbon chains has a carbon hydroxyl group (C—OH), such that the hydroxyl-covered silicon quantum dot nanoparticle is thoroughly covered by the carbon hydroxyl groups (C—OH) and the silicon hydroxyl groups (Si—OH).
    Type: Application
    Filed: February 23, 2017
    Publication date: August 24, 2017
    Inventors: CHANG-CHING TU, KUANG-PO CHEN, YAW-KUEN LI
  • Patent number: 9373749
    Abstract: Phosphors formed using silicon nanoparticles are provided. The phosphors exhibit bright fluorescence and high quantum yield, making them ideal for lighting applications. Methods for making the silicon phosphors are also provided, along with lighting devices that incorporate the silicon phosphors.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: June 21, 2016
    Assignee: University of Washington through its Center for Commercialization
    Inventors: Chang-Ching Tu, Guozhong Cao, Lih Y. Lin
  • Publication number: 20160072008
    Abstract: Phosphors formed using silicon nanoparticles are provided. The phosphors exhibit bright fluorescence and high quantum yield, making them ideal for lighting applications. Methods for making the silicon phosphors are also provided, along with lighting devices that incorporate the silicon phosphors.
    Type: Application
    Filed: November 5, 2015
    Publication date: March 10, 2016
    Applicant: University of Washington through its Center for Commercialization
    Inventors: Chang-Ching Tu, Guozhong Cao, Lih Y. Lin
  • Patent number: 9209352
    Abstract: Phosphors formed using silicon nanoparticles are provided. The phosphors exhibit bright fluorescence and high quantum yield, making them ideal for lighting applications. Methods for making the silicon phosphors are also provided, along with lighting devices that incorporate the silicon phosphors.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: December 8, 2015
    Assignee: University of Washington through its Center for Commercialization
    Inventors: Chang-Ching Tu, Guozhong Cao, Lih Y. Lin
  • Publication number: 20140339499
    Abstract: Phosphors formed using silicon nanoparticles are provided. The phosphors exhibit bright fluorescence and high quantum yield, making them ideal for lighting applications. Methods for making the silicon phosphors are also provided, along with lighting devices that incorporate the silicon phosphors.
    Type: Application
    Filed: November 30, 2012
    Publication date: November 20, 2014
    Applicant: University of Washington through its Center for Commercialization
    Inventors: Chang-Ching Tu, Guozhong Cao, Lih Y. Lin
  • Patent number: 8564524
    Abstract: A flat panel display comprises a display panel, a scan driving circuit and a control unit, wherein the display panel includes a plurality of scan lines. The scan driving circuit generates the first and the second scan signals to enable a portion of the scan lines. Furthermore, the control unit may enable a control signal every a predetermined duration according to these scan lines.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: October 22, 2013
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chang-Ching Tu, Yu-Chieh Fang
  • Patent number: 8383432
    Abstract: Colloidal-processed Si particle devices, device fabrication, and device uses have been presented. The generic device includes a substrate, a first electrode overlying the substrate, a second electrode overlying the substrate, laterally adjacent the first electrode, and separated from the first electrode by a spacing. A colloidal-processed Si particle layer overlies the first electrode, the second electrode, and the spacing between the electrodes. The Si particle layer includes a first plurality of nano-sized Si particles and a second plurality of micro-sized Si particles.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: February 26, 2013
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Jiandong Huang, Liang Tang, Changqing Zhan, Chang-Ching Tu
  • Patent number: 8314015
    Abstract: A process of silicon (Si) surface modification is provided for the electrochemical synthesis of Si particles in suspension. The process begins with a Si first substrate with a surface, and forms Si particles attached to the surface. Hydrogen-terminated Si particles are created and the first substrate is immersed in a hexane/1-octene (1/1 volume ratio) solution with a catalytic amount of chloroplatinic acid (H2PtCl6). 1-octene is bonded with the hydrogen-terminated Si particles, creating modified Si particles, with octane capping ligands, attached to the substrate surface. The first substrate is then exposed to ultrasonication, separating the modified Si particles from the first substrate. After removing the first substrate, a suspension is created of modified Si particles suspended in excess hexane/1-octene.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: November 20, 2012
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Chang-Ching Tu, Liang Tang, Apostolos T. Voutsas
  • Publication number: 20120274231
    Abstract: A method is provided for fabricating a colloidal silicon quantum dot (SiQD) visible spectrum light-emitting diode (LED). The method begins with a transparent first electrode, and a hole-injection layer is formed overlying the first electrode. A hole-transport layer is formed overlying the hole-injection layer, and a SiQD layer overlies the hole-transport layer, where each SiQD has a diameter of less than about 6 nanometers (nm). An electron-transport layer is formed overlying the SiQD layer, and a second electrode is formed overlying the electron-transport layer.
    Type: Application
    Filed: April 26, 2011
    Publication date: November 1, 2012
    Inventors: Chang-Ching Tu, Liang Tang, Jiandong Huang, Apostolos T. Voutsas
  • Publication number: 20120015501
    Abstract: A process of silicon (Si) surface modification is provided for the electrochemical synthesis of Si particles in suspension. The process begins with a Si first substrate with a surface, and forms Si particles attached to the surface. Hydrogen-terminated Si particles are created and the first substrate is immersed in a hexane/1-octene (1/1 volume ratio) solution with a catalytic amount of chloroplatinic acid (H2PtCl6). 1-octene is bonded with the hydrogen-terminated Si particles, creating modified Si particles, with octane capping ligands, attached to the substrate surface. The first substrate is then exposed to ultrasonication, separating the modified Si particles from the first substrate. After removing the first substrate, a suspension is created of modified Si particles suspended in excess hexane/1-octene.
    Type: Application
    Filed: July 14, 2010
    Publication date: January 19, 2012
    Inventors: Chang-Ching Tu, Liang Tang, Apostolos T. Voutsas
  • Patent number: 8098222
    Abstract: A liquid-crystal-display (LCD) and a display panel thereof are provided. The display panel includes a plurality of pixel row units and a plurality of switch units. Each pixel row unit is connected between a scan line and a potential switch line. The first end of each switch unit receives the common voltage provided by the display panel, and the second end of each switch unit is connected to its corresponding potential switch line. Thus, not only the flicker-noise of the display panel is reduced, but also the display-quality of the LCD is promoted.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: January 17, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chang-Ching Tu, Yu-Chieh Fang
  • Patent number: 8089435
    Abstract: An LCD and a display panel thereof are provided. A common voltage generation circuit of the display panel is electrically connected to at least one pixel in a non-active pixels region. According to the display voltage at a drain of a TFT in the pixel, an average of display voltages of positive and negative polarities is obtained in two frame times. The average value is regarded as a common voltage supplied to every pixel in an active pixel region in the display panel. Thereby, the problem of a drift of a feed-through voltage (?VD) of a scan voltage due to an RC delay of a parasitic-capacitance and a parasitic-resistance on the scan line can be avoided. Further, the gray-level accuracy of every pixel in the active pixel region can be improved, and the flicker-noise of the display-panel can be reduced, thus significantly promoting the display quality of the LCD.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: January 3, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventor: Chang-Ching Tu
  • Publication number: 20110032743
    Abstract: Colloidal-processed Si particle devices, device fabrication, and device uses have been presented. The generic device includes a substrate, a first electrode overlying the substrate, a second electrode overlying the substrate, laterally adjacent the first electrode, and separated from the first electrode by a spacing. A colloidal-processed Si particle layer overlies the first electrode, the second electrode, and the spacing between the electrodes. The Si particle layer includes a first plurality of nano-sized Si particles and a second plurality of micro-sized Si particles.
    Type: Application
    Filed: July 14, 2010
    Publication date: February 10, 2011
    Inventors: Jiandong Huang, Liang Tang, Changqing Zhan, Chang-Ching Tu
  • Publication number: 20090109197
    Abstract: A flat panel display comprises a display panel, a scan driving circuit and a control unit, wherein the display panel includes a plurality of scan lines. The scan driving circuit generates the first and the second scan signals to enable a portion of the scan lines. Furthermore, the control unit may enable a control signal every a predetermined duration according to these scan lines.
    Type: Application
    Filed: September 19, 2008
    Publication date: April 30, 2009
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Chang-Ching Tu, Yu-Chieh Fang
  • Publication number: 20080238853
    Abstract: A liquid-crystal-display (LCD) and a display panel thereof are provided. The display panel includes a plurality of pixel row units and a plurality of switch units. Each pixel row unit is connected between a scan line and a potential switch line. The first end of each switch unit receives the common voltage provided by the display panel, and the second end of each switch unit is connected to its corresponding potential switch line. Thus, not only the flicker-noise of the display panel is reduced, but also the display-quality of the LCD is promoted.
    Type: Application
    Filed: November 8, 2007
    Publication date: October 2, 2008
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Chang-Ching Tu, Yu-Chieh Fang
  • Publication number: 20080117148
    Abstract: An LCD and a display panel thereof are provided. A common voltage generation circuit of the display panel is electrically connected to at least one pixel in a non-active pixels region. According to the display voltage at a drain of a TFT in the pixel, an average of display voltages of positive and negative polarities is obtained in two frame times. The average value is regarded as a common voltage supplied to every pixel in an active pixel region in the display panel. Thereby, the problem of a drift of a feed-through voltage (?VD) of a scan voltage due to an RC delay of a parasitic-capacitance and a parasitic-resistance on the scan line can be avoided. Further, the gray-level accuracy of every pixel in the active pixel region can be improved, and the flicker-noise of the display-panel can be reduced, thus significantly promoting the display quality of the LCD.
    Type: Application
    Filed: March 27, 2007
    Publication date: May 22, 2008
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventor: Chang-Ching Tu