Patents by Inventor Cheng S. Chang

Cheng S. 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: 20240099086
    Abstract: A display may have an array of pixels. Display driver circuitry may supply data and control signals to the pixels. Each pixel may have seven transistors, a capacitor, and a light-emitting diode such as an organic light-emitting diode. The seven transistors may receive control signals using horizontal control lines. Each pixel may have first and second emission enable transistors that are coupled in series with a drive transistor and the light-emitting diode of that pixel. The first and second emission enable transistors may be coupled to a common control line or may be separately controlled so that on-bias stress can be effectively applied to the drive transistor. The display driver circuitry may have gate driver circuits that provide different gate line signals to different rows of pixels within the display. Different rows may also have different gate driver strengths and different supplemental gate line loading structures.
    Type: Application
    Filed: November 17, 2023
    Publication date: March 21, 2024
    Inventors: Cheng-Ho Yu, Chin-Wei Lin, Shyuan Yang, Ting-Kuo Chang, Tsung-Ting Tsai, Warren S. Rieutort-Louis, Shih-Chang Chang, Yu Cheng Chen, John Z. Zhong
  • Patent number: 9777910
    Abstract: An LED light fixture includes an integrally formed unitary housing having a first portion and second portion laterally adjacent to one another. The first and second portions at least partially define separate illuminating and wiring compartments. The illuminating compartment houses a plurality of light emitting diodes and a reflector. The illuminating compartment is partially defined by a frame and a lens mounted to the first portion of the housing. The wiring compartment has at least one wall defined by a door. The door is pivotably attached to the housing. A driver for the plurality of light emitting diodes is mounted to the door for movement with the door.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: October 3, 2017
    Assignee: Atlas Lighting Products, Inc.
    Inventors: R. Samuel Hunt, III, James H. Bennett, Scott T. Ellingson, Cheng S. Chang
  • Publication number: 20170030563
    Abstract: A system and method for retrofitting an existing light pole. The system includes at least one LED light fixture, at least one connector, and an adaptor configured to be mounted to the top of the existing light pole. The adaptor is a first adaptor when the existing light pole has a round base and no tenon. The adaptor is a second adaptor when the existing light pole has a round base and a tenon. The adaptor is a third adaptor when the existing light pole has a square base and a tenon. The first adaptor, the second adaptor, and the third adaptor each have a different configuration.
    Type: Application
    Filed: July 26, 2016
    Publication date: February 2, 2017
    Inventors: R. Samuel Hunt, James H. Bennett, Scott T. Ellingson, Cheng S. Chang, Nathan D. Congdon
  • Publication number: 20160281967
    Abstract: An LED light fixture includes an integrally formed unitary housing having a first portion and second portion laterally adjacent to one another. The first and second portions at least partially define separate illuminating and wiring compartments. The illuminating compartment houses a plurality of light emitting diodes and a reflector. The illuminating compartment is partially defined by a frame and a lens mounted to the first portion of the housing. The wiring compartment has at least one wall defined by a door. The door is pivotably attached to the housing. A driver for the plurality of light emitting diodes is mounted to the door for movement with the door.
    Type: Application
    Filed: March 24, 2015
    Publication date: September 29, 2016
    Inventors: R. Samuel Hunt, III, James H. Bennett, Scott T. Ellingson, Cheng S. Chang
  • Patent number: D710530
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: August 5, 2014
    Assignee: Atlas Lighting Products, Inc.
    Inventors: Cheng S. Chang, Scott T. Ellingson, James H. Bennett, R. Samuel Hunt
  • Patent number: D740997
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: October 13, 2015
    Assignee: Atlas Lighting Products, Inc.
    Inventors: Cheng S. Chang, Scott T. Ellingson, James H. Bennett, R. Samuel Hunt, III
  • Patent number: D752274
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: March 22, 2016
    Assignee: Atlas Lighting Products, Inc.
    Inventors: R. Samuel Hunt, III, James H. Bennett, Cheng S. Chang
  • Patent number: D754385
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: April 19, 2016
    Assignee: Atlas Lighting Products, Inc.
    Inventors: R. Samuel Hunt, III, James H. Bennett, Scott T. Ellingson, Cheng S. Chang
  • Patent number: D772474
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: November 22, 2016
    Assignee: Atlas Lighting Products, Inc.
    Inventors: Cheng S. Chang, Scott T. Ellingson, James H. Bennett, R. Samuel Hunt, III
  • Patent number: D808568
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: January 23, 2018
    Assignee: Atlas Lighting Products, Inc.
    Inventors: Cheng S. Chang, Scott T. Ellingson, James H. Bennett, R. Samuel Hunt, III