Patents by Inventor Chang-Hao WANG

Chang-Hao WANG 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: 12218282
    Abstract: A light-emitting device includes a first semiconductor layer; a semiconductor pillar formed on the first semiconductor layer, including a second semiconductor layer and an active layer, wherein the semiconductor pillar comprises an outmost periphery; a first contact layer formed on the first semiconductor layer and including a first contact portion and a first extending portion, wherein the first extending portion continuously surrounds an entirety of the outmost periphery of the semiconductor pillar and the first contact portion; a second contact layer formed on the second semiconductor layer; a first insulating layer including multiple first openings exposing the first contact layer and multiple second openings exposing the second contact layer; a first electrode contact layer connected to the first contact portion through the multiple first openings and covering all of the first contact layer; a second electrode contact layer connected to the second contact layer through the multiple second openings.
    Type: Grant
    Filed: December 29, 2022
    Date of Patent: February 4, 2025
    Assignee: EPISTAR CORPORATION
    Inventors: Aurelien Gauthier-Brun, Chao-Hsing Chen, Chang-Tai Hsaio, Chih-Hao Chen, Chi-Shiang Hsu, Jia-Kuen Wang, Yung-Hsiang Lin
  • Patent number: 9035667
    Abstract: An automatic testing equipment, an automatic testing system, an a method for controlling automatic testing thereof are disclosed. The automatic testing equipment is used for receiving a control signal to test a durability of a connecting port of a device under test (DUT). The automatic testing equipment includes a testing platform, a testing unit, and a power control unit. The testing platform is used for disposing the DUT. The testing unit includes a main body, an assembly unit, and a height adjustment unit. The assembly unit is used for assembling a test connector. The height adjustment unit is connected with the main body and works with the assembly unit to adjust a height of the assembly unit. The power control unit drives the testing unit to test the connecting port via the test connector after receiving the control signal.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: May 19, 2015
    Assignee: Wistron Corporation
    Inventors: Shi-Ping Wu, Chang-Hao Wang
  • Publication number: 20130033276
    Abstract: An automatic testing equipment, an automatic testing system, an a method for controlling automatic testing thereof are disclosed. The automatic testing equipment is used for receiving a control signal to test a durability of a connecting port of a device under test (DUT). The automatic testing equipment includes a testing platform, a testing unit, and a power control unit. The testing platform is used for disposing the DUT. The testing unit includes a main body, an assembly unit, and a height adjustment unit. The assembly unit is used for assembling a test connector. The height adjustment unit is connected with the main body and works with the assembly unit to adjust a height of the assembly unit. The power control unit drives the testing unit to test the connecting port via the test connector after receiving the control signal.
    Type: Application
    Filed: April 24, 2012
    Publication date: February 7, 2013
    Inventors: Shi-Ping WU, Chang-Hao WANG