Patents by Inventor Chien-Hua Chou
Chien-Hua Chou 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).
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Patent number: 11742459Abstract: 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: GrantFiled: August 2, 2022Date of Patent: August 29, 2023Assignee: EPISTAR CORPORATIONInventors: Chien-Hua Chou, Tai-Chun Wang, Chih-Tsung Su, Biau-Dar Chen
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Publication number: 20220376136Abstract: 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: ApplicationFiled: August 2, 2022Publication date: November 24, 2022Inventors: Chien-Hua CHOU, Tai-Chun WANG, Chih-Tsung SU, Biau-Dar CHEN
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Patent number: 11430916Abstract: A light-emitting device comprises a semiconductor layer; a pad electrode comprising a periphery disposed on the semiconductor layer; 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 connected to the first portion; and a plurality of first current blocking regions formed on the semiconductor layer, separated from the pad electrode and formed under the finger electrode, wherein one of the plurality of first current blocking regions is most close to the pad electrode and is separated from the pad electrode by a first distance, adjacent two of others of the plurality of first current blocking regions are separated from each other by a second distance, and the first distance is longer than the second distance.Type: GrantFiled: November 2, 2020Date of Patent: August 30, 2022Assignee: EPISTAR CORPORATIONInventors: Chien-Hua Chou, Tai-Chun Wang, Chih-Tsung Su, Biau-Dar Chen
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Publication number: 20210074886Abstract: A light-emitting device comprises a semiconductor layer; a pad electrode comprising a periphery disposed on the semiconductor layer; 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 connected to the first portion; and a plurality of first current blocking regions formed on the semiconductor layer, separated from the pad electrode and formed under the finger electrode, wherein one of the plurality of first current blocking regions is most close to the pad electrode and is separated from the pad electrode by a first distance, adjacent two of others of the plurality of first current blocking regions are separated from each other by a second distance, and the first distance is longer than the second distance.Type: ApplicationFiled: November 2, 2020Publication date: March 11, 2021Inventors: Chien-Hua CHOU, Tai-Chun WANG, Chih-Tsung SU, Biau-Dar CHEN
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Patent number: 10825956Abstract: A light-emitting device comprises a semiconductor layer; a pad electrode comprising a periphery disposed on the semiconductor layer; 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 connected to the first portion; and a plurality of first current blocking regions formed on the semiconductor layer, separated from the pad electrode and formed under the finger electrode, wherein one of the plurality of first current blocking regions is most close to the pad electrode and is separated from the pad electrode by a first distance, adjacent two of others of the plurality of first current blocking regions are separated from each other by a second distance, and the first distance is longer than the second distance.Type: GrantFiled: October 31, 2019Date of Patent: November 3, 2020Assignee: EPISTAR CORPORATIONInventors: Chien-Hua Chou, Tai-Chun Wang, Chih-Tsung Su, Biau-Dar Chen
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Publication number: 20200066937Abstract: A light-emitting device comprises a semiconductor layer; a pad electrode comprising a periphery disposed on the semiconductor layer; 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 connected to the first portion; and a plurality of first current blocking regions formed on the semiconductor layer, separated from the pad electrode and formed under the finger electrode, wherein one of the plurality of first current blocking regions is most close to the pad electrode and is separated from the pad electrode by a first distance, adjacent two of others of the plurality of first current blocking regions are separated from each other by a second distance, and the first distance is longer than the second distance.Type: ApplicationFiled: October 31, 2019Publication date: February 27, 2020Inventors: Chien-Hua CHOU, Tai-Chun WANG, Chih-Tsung SU, Biau-Dar CHEN
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Patent number: 10505076Abstract: 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: GrantFiled: December 24, 2018Date of Patent: December 10, 2019Assignee: Epistar CorporationInventors: Chien-Hua Chou, Tai-Chun Wang, Chih-Tsung Su, Biau-Dar Chen
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Publication number: 20190148595Abstract: 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: ApplicationFiled: December 24, 2018Publication date: May 16, 2019Inventors: Chien-Hua CHOU, Tai-Chun WANG, Chih-Tsung SU, Biau-Dar CHEN
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Patent number: 10199542Abstract: 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: GrantFiled: October 24, 2016Date of Patent: February 5, 2019Assignee: EPISTAR CORPORATIONInventors: Chien-Hua Chou, Tai-Chun Wang, Chih-Tsung Su, Biau-Dar Chen
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Publication number: 20170179343Abstract: 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: ApplicationFiled: October 24, 2016Publication date: June 22, 2017Inventors: Chien-Hua CHOU, Tai-Chun WANG, Chih-Tsung SU, Biau-Dar CHEN
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Patent number: 9530934Abstract: 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: GrantFiled: December 22, 2015Date of Patent: December 27, 2016Assignee: EPISTAR CORPORATIONInventors: Chien-Hua Chou, Tai-Chun Wang, Biau-Dar Chen, Chih-Tsung Su