Patents by Inventor Biau-Dar Chen

Biau-Dar Chen 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: 20190148595
    Abstract: A light-emitting device comprises a semiconductor stack; a pad electrode comprising a periphery disposed on the semiconductor stack; and a finger electrode connected to the pad electrode, wherein the finger electrode comprises a first portion extended from the periphery of the pad electrode and a second portion away from the pad electrode, the first portion comprises a first side and a second side, the first side is opposite to the second side, the first side comprises a first arc having a first curvature radius, and the first curvature radius is larger than 10 ?m.
    Type: Application
    Filed: December 24, 2018
    Publication date: May 16, 2019
    Inventors: Chien-Hua CHOU, Tai-Chun WANG, Chih-Tsung SU, Biau-Dar CHEN
  • Patent number: 10199542
    Abstract: A light-emitting device comprises a semiconductor stack; a pad electrode comprising a periphery disposed on the semiconductor stack; and a finger electrode connected to the pad electrode, wherein the finger electrode comprises a first portion extended from the periphery of the pad electrode and a second portion away from the pad electrode, the first portion comprises a first side and a second side, the first side is opposite to the second side, the first side comprises a first arc having a first curvature radius, and the first curvature radius is larger than 10 ?m.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: February 5, 2019
    Assignee: EPISTAR CORPORATION
    Inventors: Chien-Hua Chou, Tai-Chun Wang, Chih-Tsung Su, Biau-Dar Chen
  • Publication number: 20170179343
    Abstract: A light-emitting device comprises a semiconductor stack; a pad electrode comprising a periphery disposed on the semiconductor stack; and a finger electrode connected to the pad electrode, wherein the finger electrode comprises a first portion extended from the periphery of the pad electrode and a second portion away from the pad electrode, the first portion comprises a first side and a second side, the first side is opposite to the second side, the first side comprises a first arc having a first curvature radius, and the first curvature radius is larger than 10 ?m.
    Type: Application
    Filed: October 24, 2016
    Publication date: June 22, 2017
    Inventors: Chien-Hua CHOU, Tai-Chun WANG, Chih-Tsung SU, Biau-Dar CHEN
  • Patent number: 9530934
    Abstract: A light-emitting device includes a semiconductor stack; a pad electrode comprising a periphery disposed on the semiconductor stack; and a finger electrode connected to the pad electrode, wherein the finger electrode includes a first portion extended from the periphery of the pad electrode and a second portion away from the pad electrode, the first portion includes a first side and a second side, the first side is opposite to the second side, the first side comprises a first arc having a first curvature radius, and the first curvature radius is larger than 10 ?m.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: December 27, 2016
    Assignee: EPISTAR CORPORATION
    Inventors: Chien-Hua Chou, Tai-Chun Wang, Biau-Dar Chen, Chih-Tsung Su
  • Patent number: 9224912
    Abstract: A method of fabricating an optoelectronic device, comprises: providing a substrate, wherein the substrate comprises a first major surface and a second major surface opposite to the first major surface; forming a light emitting stack on the second major surface of the substrate; forming a supporting layer covering the light emitting stack; forming a plurality of first modified regions in the substrate by employing a first energy into the substrate after forming the supporting layer; and cleaving the substrate.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: December 29, 2015
    Assignee: EPISTAR CORPORATION
    Inventors: Cheng Hsiang Ho, Biau-Dar Chen, Liang Sheng Chi, Chun Chang Chen, Pei Shan Fang
  • Publication number: 20150187986
    Abstract: A method of fabricating an optoelectronic device, comprising: providing a substrate, wherein the substrate comprises a first major surface and a second major surface opposite to the first major surface; forming a light emitting stack on the second major surface of the substrate; forming a supporting layer covering the light emitting stack; forming a plurality of first modified regions in the substrate by employing a first energy into the substrate after forming the supporting layer; and cleaving the substrate.
    Type: Application
    Filed: February 25, 2015
    Publication date: July 2, 2015
    Inventors: Cheng Hsiang HO, Biau-Dar CHEN, Liang Sheng CHI, Chun Chang CHEN, Pei Shan FANG
  • Patent number: 8987752
    Abstract: A method of fabricating an optoelectronic device, comprising: providing a substrate, wherein the substrate comprises a first major surface and a second major surface opposite to the first major surface; forming a light emitting stack on the second major surface of the substrate; forming a supporting layer covering the light emitting stack; forming a plurality of first modified regions in the substrate by employing a first energy into the substrate, wherein the supporting layer is formed before forming the plurality of first modified regions; forming an oxide layer on the first major surface of the substrate; and cleaving the substrate along the plurality of first modified regions.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: March 24, 2015
    Assignee: Epistar Corporation
    Inventors: Cheng Hsiang Ho, Biau-Dar Chen, Liang Sheng Chi, Chun Chang Chen, Pei Shan Fang
  • Publication number: 20130306993
    Abstract: A method of fabricating an optoelectronic device, comprising: providing a substrate, wherein the substrate comprises a first major surface and a second major surface opposite to the first major surface; forming a light emitting stack on the second major surface of the substrate; forming an supporting layer covering the light emitting stack; forming a plurality of first modified regions in the substrate by employing an first energy into the substrate; forming an oxide layer on the first major surface of the substrate; and cleaving the substrate along the plurality of the first modified regions.
    Type: Application
    Filed: May 17, 2013
    Publication date: November 21, 2013
    Inventors: Cheng Hsiang Ho, Biau-Dar Chen, Liang Sheng Chi, Chun Chang Chen, Pei Shan Fang
  • Publication number: 20130130417
    Abstract: A method for manufacturing a light-emitting device includes steps of: providing a substrate comprising an upper surface and a lower surface opposite to the upper surface; processing the upper surface to be an uneven surface; forming a light-emitting structure on the upper surface of the substrate; and forming a hole through the substrate by radiating a coherent laser beam to the lower surface of the substrate for a predetermined time; wherein the band gap energy of the coherent laser beam is higher than the band gap energy of the substrate thereby the substrate is etched away by the laser beam.
    Type: Application
    Filed: November 22, 2011
    Publication date: May 23, 2013
    Inventors: Jar-Yu WU, Biau-Dar Chen, Chun-Lung Tseng, Chih-Hung Wang, Hung-Yao Lin
  • Publication number: 20050082562
    Abstract: A nitride light emitting device includes a substrate, a first nitride semiconductor stack formed above the substrate, the first nitride semiconductor stack having an epitaxial surface and a first rough surface, a distance from the epitaxial surface to the substrate being not less than a distance from the rough surface to the substrate, a nitride emitting layer formed on the epitaxial surface, and a second nitride semiconductor stack formed on the nitride emitting layer for promoting the efficiency of capturing light emitted from an LED.
    Type: Application
    Filed: October 15, 2003
    Publication date: April 21, 2005
    Inventors: Chen Ou, Biau-Dar Chen, Shane-Shyan Wey, Yen-Ting Tsai