Patents by Inventor Chi-Huang Chang

Chi-Huang Chang 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).

  • Publication number: 20240145632
    Abstract: A micro light emitting device includes an epitaxial structure, a conductive layer, and a first insulating layer. The epitaxial structure has a first surface and a second surface opposite to the first surface, and includes a first semiconductor layer, an active layer and a second semiconductor layer that are arranged in such order in a direction from the first surface to the second surface. The conductive layer is formed on a surface of the first semiconductor layer away from the active layer. The first insulating layer is formed on the surface of the first semiconductor layer away from the active layer, and exposes at least a part of the conductive layer.
    Type: Application
    Filed: October 23, 2023
    Publication date: May 2, 2024
    Inventors: Ming-Chun TSENG, Shaohua HUANG, Hongwei WANG, Kang-Wei PENG, Su-Hui LIN, Xiaomeng LI, Chi-Ming TSAI, Chung-Ying CHANG
  • Publication number: 20240128531
    Abstract: The present disclosure discloses a method for recycling all types of lithium batteries. First, the lithium battery waste is acid-leached to obtain a solution containing most of metal ions. After filtering, the solution is separated from the remaining solids, and then the obtained solution is subjected to separate precipitation many times. After separately adjusting the pH value of the solution many times, adding precipitants with a high selectivity ratio, and matching with filtration and separation reaction, all ions in the lithium battery waste are sequentially precipitated in forms of iron phosphate (FePO4), aluminum hydroxide (Al(OH)3), manganese oxide (MnO2), dicobalt trioxide (cobalt oxide, Co2O3), nickel hydroxide (Ni(OH)2), and lithium carbonate (Li2CO3).
    Type: Application
    Filed: September 24, 2023
    Publication date: April 18, 2024
    Applicant: Cleanaway Company Limited
    Inventors: CHIH-HUANG LAI, HSIN-FANG CHANG, TZU-MIN CHENG, YUNG-FA YANG, TSUNG-TIEN CHEN, ZHENG-YU CHENG, CHI-YUNG CHANG
  • Patent number: 10602031
    Abstract: A display apparatus and a gamma curve compensation circuit and a driving method thereof are provided. Control the gamma curve compensation circuit to adjust data voltages provided to data lines according to a frame rate of the display apparatus, so as to perform gamma curve compensation and improve display quality of the display apparatus.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: March 24, 2020
    Assignee: Au Optronics Corporation
    Inventor: Chi-Huang Chang
  • Publication number: 20180367708
    Abstract: A display apparatus and a gamma curve compensation circuit and a driving method thereof are provided. Control the gamma curve compensation circuit to adjust data voltages provided to data lines according to a frame rate of the display apparatus, so as to perform gamma curve compensation and improve display quality of the display apparatus.
    Type: Application
    Filed: January 11, 2018
    Publication date: December 20, 2018
    Applicant: Au Optronics Corporation
    Inventor: Chi-Huang Chang
  • Patent number: 8723838
    Abstract: The present invention discloses a proximity sensing apparatus and a method thereof. A sensor apparatus comprises a panel, an emitting device, and a proximity sensor module. The panel includes a first transparent area and a second transparent area; an emitting device is located under the panel and the emitting device emitting a light passing through the first transparent area. The proximity sensor module is located under the panel and the proximity sensor module includes at least one proximity sensor with high sensitivity which is a second proximity sensor and at least one proximity sensor with low sensitivity which is a first proximity sensor, and the proximity sensor module receives the light passing through the second transparent area. The light passing through the first transparent area and then reflecting from an object to passing through the second transparent area, and the panel is able to provide a touch function.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: May 13, 2014
    Assignee: Capella Microsystems (Taiwan), Inc.
    Inventors: Cheng-Chieh Huang, Jinn-Ann Kuo, Chi-Huang Chang, Yu-Hao Kao
  • Publication number: 20120212453
    Abstract: The present invention discloses a proximity sensing apparatus and a method thereof. A sensor apparatus comprises a panel, an emitting device, and a proximity sensor module. The panel includes a first transparent area and a second transparent area; an emitting device is located under the panel and the emitting device emitting a light passing through the first transparent area. The proximity sensor module is located under the panel and the proximity sensor module includes at least one proximity sensor with high sensitivity which is a second proximity sensor and at least one proximity sensor with low sensitivity which is a first proximity sensor, and the proximity sensor module receives the light passing through the second transparent area. The light passing through the first transparent area and then reflecting from an object to passing through the second transparent area, and the panel is able to provide a touch function.
    Type: Application
    Filed: December 19, 2011
    Publication date: August 23, 2012
    Inventors: Cheng-Chieh HUANG, Jinn-Ann KUO, Chi-Huang CHANG, Yu-Hao KAO
  • Patent number: 7121338
    Abstract: A seal pad comprising a base plate and an expandable material engaged with the base plate. The expandable material comprises an outer surface where a portion of the outer surface is used to form a seal against a borehole wall. A portion of the outer surface of the expandable material is expanded during the sealing against the borehole wall. The seal pad also comprises a retainer for controlling the expansion of the expandable material. The retainer controls the expansion of the expandable material by engaging at least a portion of the outer surface of the expandable material. Thus when the seal is formed by expanding the expandable material, at least a portion of the expandable material is contained by the retainer.
    Type: Grant
    Filed: January 27, 2004
    Date of Patent: October 17, 2006
    Assignee: Halliburton Energy Services, INC
    Inventors: Anthony Herman van Zuilekom, Chi-Huang Chang
  • Publication number: 20050161218
    Abstract: A seal pad comprising a base plate and an expandable material engaged with the base plate. The expandable material comprises an outer surface where a portion of the outer surface is used to form a seal against a borehole wall. A portion of the outer surface of the expandable material is expanded during the sealing against the borehole wall. The seal pad also comprises a retainer for controlling the expansion of the expandable material. The retainer controls the expansion of the expandable material by engaging at least a portion of the outer surface of the expandable material. Thus when the seal is formed by expanding the expandable material, at least a portion of the expandable material is contained by the retainer.
    Type: Application
    Filed: January 27, 2004
    Publication date: July 28, 2005
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Anthony van Zuilekom, Chi-Huang Chang