Patents by Inventor Chih-Tsung Su
Chih-Tsung Su 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
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Patent number: 9240519Abstract: A light-emitting element, comprises: a substrate; a light-emitting semiconductor stack over the substrate and comprising an active layer; and a Distributed Bragg reflective unit under the substrate comprising a first Distributed Bragg reflective structure under the substrate and comprising a first number of pairs of alternately stacked first sub-layers and second sub-layers, and a second Distributed Bragg reflective structure under the first Distributed Bragg reflective structure and comprising a second number of pairs of alternately stacked third sub-layers and fourth sub-layers, wherein the first number is different from the second number.Type: GrantFiled: January 23, 2014Date of Patent: January 19, 2016Assignee: EPISTAR CORPORATIONInventors: Keng-Lin Chuang, Chun-Lung Tseng, Chih-Tsung Su, Ching-Hsing Shen, Chih-Hui Alston Liu, Yu-Ming Kun
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Publication number: 20140209949Abstract: A light-emitting element, comprises: a substrate; a light-emitting semiconductor stack over the substrate and comprising an active layer; and a Distributed Bragg reflective unit under the substrate comprising a first Distributed Bragg reflective structure under the substrate and comprising a first number of pairs of alternately stacked first sub-layers and second sub-layers, and a second Distributed Bragg reflective structure under the first Distributed Bragg reflective structure and comprising a second number of pairs of alternately stacked third sub-layers and fourth sub-layers, wherein the first number is different from the second number.Type: ApplicationFiled: January 23, 2014Publication date: July 31, 2014Applicant: EPISTAR CORPORATIONInventors: Keng-Lin CHUANG, Chun-Lung TSENG, Chih-Tsung SU, Ching-Hsing SHEN, Chih-Hui Alston LIU, Yu-Ming KUN
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Patent number: 8591066Abstract: A lamp module for use in non-destructive testing and inspection. The module including a module body with a front and rear end, and a side wall. The module body includes a mounting chamber located within the side walls. A plurality of LEDs are mounted within the chamber and oriented to so as to emit light out of the front end of the body. At least one LED emits light having a wavelength selected to produce fluorescence of an illuminated material. A fan is mounted to the body to dissipate heat generated by the LEDs when the fan is activated. Electrical connectors extend out of the body and are electrically connected to the LEDs and the fan for supplying current. The module can be installed in various structures or systems, including in a luminaire, an overhead light housing or a track light system.Type: GrantFiled: August 17, 2009Date of Patent: November 26, 2013Assignee: Spectronics CorporationInventors: Gustavo Garcia, John Duerr, Chih-Tsung Su
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Publication number: 20110272727Abstract: A light-emitting diode and method for manufacturing the same are described. The light-emitting diode comprises: a conductive substrate including a first surface and a second surface opposite to the first surface; a reflector structure comprising a conductive reflector layer bonding to the first surface of the conductive substrate and a conductive distributed Bragg reflector (DBR) structure stacked on the conductive reflector layer; an illuminant epitaxial structure disposed on the reflector structure; a first electrode disposed on a portion of the illuminant epitaxial structure; and a second electrode bonded to the second surface of the conductive substrate.Type: ApplicationFiled: July 19, 2011Publication date: November 10, 2011Applicant: Epistar CorporationInventors: Chih-Tsung Su, Chun-Lung Tseng, Ching-Wei Chiu, Tao-Chi Chang, Chan-Yang Lu, Jia-Ming Yu, Yi-Chang Yu, Yu-Chen Yang
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Publication number: 20100044589Abstract: A lamp module for use in non-destructive testing and inspection. The module including a module body with a front and rear end, and a side wall. The module body includes a mounting chamber located within the side walls. A plurality of LEDs are mounted within the chamber and oriented to so as to emit light out of the front end of the body. At least one LED emits light having a wavelength selected to produce fluorescence of an illuminated material. A fan is mounted to the body to dissipate heat generated by the LEDs when the fan is activated. Electrical connectors extend out of the body and are electrically connected to the LEDs and the fan for supplying current. The module can be installed in various structures or systems, including in a luminaire, an overhead light housing or a track light system.Type: ApplicationFiled: August 17, 2009Publication date: February 25, 2010Applicant: Spectronics CorporationInventors: Gustavo Garcia, John Duerr, Chih-Tsung Su
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Publication number: 20090295311Abstract: An inspection lamp is disclosed that, in one embodiment, includes a transparent or translucent rod having two ends. Two light sources, one at each end of the rod, are arranged to emit light into the rod toward one another. The rod is located within a housing that has an opening. A reflector is located within the housing to direct the light in the rod toward the opening.Type: ApplicationFiled: May 26, 2009Publication date: December 3, 2009Inventors: John Duerr, Gustavo Garcia, Chih-Tsung Su
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Patent number: 7336023Abstract: A lamp having a cold cathode field emission plate; an anode plate having a transparent substrate having a first side and a second side; a transparent conductive coating formed on the first side of the transparent substrate; a phosphor layer formed on the transparent conductive coating, and a filter formed on the second side of the transparent substrate; and a voltage source connected across the cathode and the anode plate.Type: GrantFiled: February 8, 2006Date of Patent: February 26, 2008Inventors: Meng-Jey Youh, Chih-Tsung Su, Cheuk-Wai Lau, Chun-Lung Tseng, Yao-Hsien Joseph Huang, Michelle Lin
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Publication number: 20070182300Abstract: A lamp having a cold cathode field emission plate; an anode plate having a transparent substrate having a first side and a second side; a transparent conductive coating formed on the first side of the transparent substrate; a phosphor layer formed on the transparent conductive coating, and a filter formed on the second side of the transparent substrate; and a voltage source connected across the cathode and the anode plate.Type: ApplicationFiled: February 8, 2006Publication date: August 9, 2007Inventors: Meng-Jey Youh, Chih-Tsung Su, Cheuk-Wai Lau, Chun-Lung Tseng, Yao-Hsien Huang, Michelle Lin
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Publication number: 20040075400Abstract: A lighting module is a non-spherical len and a plurality of LED circuit boards assembled together that the LED circuit board include various electronic cicuit components. The provision of electric power enables the LED having different kinds of color conversions and exchangable twinkling illuminations.Type: ApplicationFiled: December 13, 2002Publication date: April 22, 2004Inventor: Chih-Tsung Su