Patents by Inventor Wen Hung Chuang

Wen Hung Chuang 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: 20200279976
    Abstract: A light-emitting device comprises a semiconductor structure comprising a surface and a side wall inclined to the surface, wherein the semiconductor structure comprises a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, and the second semiconductor layer comprises a first edge and a first area; a reflective layer located on the second semiconductor layer and comprising an outer edge and a second area, wherein a distance between the first edge and the outer edge is greater than 0 ?m and is not greater than 10 ?m; and a first contact part comprising a metal formed on the reflective layer and the first semiconductor layer, wherein the first contact part comprises a first periphery comprising a first periphery length larger than a periphery length of the active layer from a top-view of the light-emitting device.
    Type: Application
    Filed: May 19, 2020
    Publication date: September 3, 2020
    Inventors: Chao-Hsing CHEN, Jia-Kuen WANG, Wen-Hung CHUANG, Tzu-Yao TSENG, Cheng-Lin LU
  • Patent number: 10749075
    Abstract: A semiconductor light-emitting device includes a semiconductor stack including a first semiconductor layer, a second semiconductor layer, and an active layer; a plurality of first trenches penetrating the second semiconductor layer and the active layer to expose the first semiconductor layer; a second trench penetrating the second semiconductor layer and the active layer to expose the first semiconductor layer, wherein the second trench is disposed near an outmost edge of the active layer, and surrounds the active layer and the plurality of first trenches; a patterned metal layer formed on the second semiconductor layer and formed in one of the plurality of first trenches or the second trench; and a first pad portion and a second pad portion both formed on the second semiconductor layer and electrically connecting the second semiconductor layer and the first semiconductor layer respectively.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: August 18, 2020
    Assignee: EPISTAR CORPORATION
    Inventors: Chao-Hsing Chen, Jia-Kuen Wang, Tzu-Yao Tseng, Tsung-Hsun Chiang, Bo-Jiun Hu, Wen-Hung Chuang, Yu-Ling Lin
  • Patent number: 10680136
    Abstract: A light-emitting device comprises a semiconductor structure comprising a surface and a side wall inclined to the surface, wherein the semiconductor structure comprises a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, and the second semiconductor layer comprises a first edge and a first area; a reflective layer located on the second semiconductor layer and comprising an outer edge and a second area, wherein a distance between the first edge and the outer edge is greater than 0 ?m and is not greater than 10 ?m; and a first contact part comprising a metal formed on the reflective layer and the first semiconductor layer, wherein the first contact part comprises a first periphery comprising a first periphery length larger than a periphery length of the active layer from a top-view of the light-emitting device.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: June 9, 2020
    Assignee: EPISTAR CORPORATION
    Inventors: Chao-Hsing Chen, Jia-Kuen Wang, Wen-Hung Chuang, Tzu-Yao Tseng, Cheng-Lin Lu
  • Patent number: 10680138
    Abstract: A light-emitting device comprises a semiconductor stack comprising a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a first pad on the semiconductor stack; a second pad on the semiconductor stack, wherein the first pad and the second pad are separated from each other with a distance, which define a region between the first pad and the second pad on the semiconductor stack; and multiple vias penetrating the active layer to expose the first semiconductor layer, wherein the first pad and the second pad are formed on regions other than the multiple vias.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: June 9, 2020
    Assignee: EPISTAR CORPORATION
    Inventors: Chao-Hsing Chen, Jia-Kuen Wang, Tzu-Yao Tseng, Bo-Jiun Hu, Tsung-Hsun Chiang, Wen-Hung Chuang, Kuan-Yi Lee, Yu-Ling Lin, Chien-Fu Shen, Tsun-Kai Ko
  • Patent number: 10651344
    Abstract: A light-emitting device includes a semiconductor structure including a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a surrounding part surrounding the semiconductor structure and exposing a surface of the first semiconductor layer; a first insulating structure formed on the semiconductor structure, including a plurality of protrusions covering the surface of the first semiconductor layer and a plurality of recesses exposing the surface of the first semiconductor layer; a first contact portion formed on the surrounding part and contacting the surface of the first semiconductor layer by the plurality of recesses; a first pad formed on the semiconductor structure; and a second pad formed on the semiconductor structure.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: May 12, 2020
    Assignee: EPISTAR CORPORATION
    Inventors: Chao-Hsing Chen, Jia-Kuen Wang, Tzu-Yao Tseng, Wen-Hung Chuang, Cheng-Lin Lu
  • Publication number: 20190348570
    Abstract: A semiconductor light-emitting device includes a semiconductor stack including a first semiconductor layer, a second semiconductor layer, and an active layer; a plurality of first trenches penetrating the second semiconductor layer and the active layer to expose the first semiconductor layer; a second trench penetrating the second semiconductor layer and the active layer to expose the first semiconductor layer, wherein the second trench is disposed near an outmost edge of the active layer, and surrounds the active layer and the plurality of first trenches; a patterned metal layer formed on the second semiconductor layer and formed in one of the plurality of first trenches or the second trench; and a first pad portion and a second pad portion both formed on the second semiconductor layer and electrically connecting the second semiconductor layer and the first semiconductor layer respectively.
    Type: Application
    Filed: July 23, 2019
    Publication date: November 14, 2019
    Inventors: Chao-Hsing CHEN, Jia-Kuen WANG, Tzu-Yao TSENG, Tsung-Hsun CHIANG, Bo-Jiun HU, Wen-Hung CHUANG, Yu-Ling LIN
  • Patent number: 10411162
    Abstract: A semiconductor light-emitting device includes a semiconductor stack including a first semiconductor layer, a second semiconductor layer, and an active layer; a plurality of first trenches penetrating the second semiconductor layer and the active layer to expose the first semiconductor layer; a second trench penetrating the second semiconductor layer and the active layer to expose the first semiconductor layer, wherein the second trench is disposed near an outmost edge of the active layer, and surrounds the active layer and the plurality of first trenches; a patterned metal layer formed on the second semiconductor layer and formed in one of the plurality of first trenches or the second trench; and a first pad portion and a second pad portion both formed on the second semiconductor layer and electrically connecting the second semiconductor layer and the first semiconductor layer respectively.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: September 10, 2019
    Assignee: EPISTAR CORPORATION
    Inventors: Chao-Hsing Chen, Jia-Kuen Wang, Tzu-Yao Tseng, Tsung-Hsun Chiang, Bo-Jiun Hu, Wen-Hung Chuang, Yu-Ling Lin
  • Publication number: 20190273186
    Abstract: A light-emitting device comprises a semiconductor structure comprising a surface and a side wall inclined to the surface, wherein the semiconductor structure comprises a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, and the second semiconductor layer comprises a first edge and a first area; a reflective layer located on the second semiconductor layer and comprising an outer edge and a second area, wherein a distance between the first edge and the outer edge is greater than 0 ?m and is not greater than 10 ?m; and a first contact part comprising a metal formed on the reflective layer and the first semiconductor layer, wherein the first contact part comprises a first periphery comprising a first periphery length larger than a periphery length of the active layer from a top-view of the light-emitting device.
    Type: Application
    Filed: May 20, 2019
    Publication date: September 5, 2019
    Inventors: Chao-Hsing CHEN, Jia-Kuen WANG, Wen-Hung CHUANG, Tzu-Yao TSENG, Cheng-Lin LU
  • Publication number: 20190245116
    Abstract: A light-emitting device comprises a semiconductor stack comprising a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a first pad on the semiconductor stack; a second pad on the semiconductor stack, wherein the first pad and the second pad are separated from each other with a distance, which define a region between the first pad and the second pad on the semiconductor stack; and multiple vias penetrating the active layer to expose the first semiconductor layer, wherein the first pad and the second pad are formed on regions other than the multiple vias.
    Type: Application
    Filed: April 15, 2019
    Publication date: August 8, 2019
    Inventors: Chao-Hsing CHEN, Jia-Kuen WANG, Tzu-Yao TSENG, Bo-Jiun HU, Tsung-Hsun CHIANG, Wen-Hung CHUANG, Kuan-Yi LEE, Yu-Ling LIN, Chien-Fu SHEN, Tsun-Kai KO
  • Patent number: 10361342
    Abstract: A light-emitting device comprises a semiconductor stack comprising a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a first pad electrically connected to the first semiconductor layer; a second pad comprising multiple sidewalls electrically connected to the second semiconductor layer; and a metal layer formed on the semiconductor stack, wherein the metal layer surrounds the multiple sidewalls of the second pad and the metal layer is separated from the second pad.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: July 23, 2019
    Assignee: EPISTAR CORPORATION
    Inventors: Chao-Hsing Chen, Jia-Kuen Wang, Wen-Hung Chuang, Tzu-Yao Tseng, Cheng-Lin Lu, Chi-Shiang Hsu, Tsung-Hsun Chiang, Bo-Jiun Hu
  • Patent number: 10340423
    Abstract: A light-emitting device includes a semiconductor structure comprising a surface and a side wall inclined to the surface, wherein the semiconductor structure comprises a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, and the second semiconductor layer comprises a first edge and a first area; and a reflective layer located on the semiconductor structure and comprising an outer edge and a second area; wherein a distance between the first edge and the outer edge is between 0 ?m and 10 ?m, and the second area of the reflective layer is not less than 80% of the first area of the second semiconductor layer.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: July 2, 2019
    Assignee: EPISTAR CORPORATION
    Inventors: Chao-Hsing Chen, Jia-Kuen Wang, Wen-Hung Chuang, Tzu-Yao Tseng, Cheng-Lin Lu
  • Patent number: 10297723
    Abstract: A light-emitting device comprises a semiconductor stack comprising a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a first pad on the semiconductor stack; a second pad on the semiconductor stack, wherein the first pad and the second pad are separated from each other with a distance, which define a region between the first pad and the second pad on the semiconductor stack; and multiple vias penetrating the active layer to expose the first semiconductor layer, wherein the first pad and the second pad are formed on regions other than the multiple vias.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: May 21, 2019
    Assignee: EPISTAR CORPORATION
    Inventors: Chao-Hsing Chen, Jia-Kuen Wang, Tzu-Yao Tseng, Bo-Jiun Hu, Tsung-Hsun Chiang, Wen-Hung Chuang, Kuan-Yi Lee, Yu-Ling Lin, Chien-Fu Shen, Tsun-Kai Ko
  • Publication number: 20190148600
    Abstract: A light-emitting device includes a semiconductor structure including a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a surrounding part surrounding the semiconductor structure and exposing a surface of the first semiconductor layer; a first insulating structure formed on the semiconductor structure, including a plurality of protrusions covering the surface of the first semiconductor layer and a plurality of recesses exposing the surface of the first semiconductor layer; a first contact portion formed on the surrounding part and contacting the surface of the first semiconductor layer by the plurality of recesses; a first pad formed on the semiconductor structure; and a second pad formed on the semiconductor structure.
    Type: Application
    Filed: January 14, 2019
    Publication date: May 16, 2019
    Inventors: Chao-Hsing CHEN, Jia-Kuen WANG, Tzu-Yao TSENG, Wen-Hung CHUANG, Cheng-Lin LU
  • Publication number: 20190074409
    Abstract: A light-emitting element includes a semiconductor light-emitting stack including a first semiconductor layer, a second semiconductor layer formed on the first semiconductor layer, and an active layer formed therebetween; a first conductive layer disposed on the second semiconductor layer and electrically connecting the second semiconductor layer; a second conductive layer disposed on the second semiconductor layer and electrically connecting the first semiconductor layer; and a cushion part disposed on and directly contacts the first conductive layer, wherein in a top view, the cushion part is surrounded by and electrically isolated from the second conductive layer.
    Type: Application
    Filed: November 6, 2018
    Publication date: March 7, 2019
    Inventors: Chao-Hsing Chen, Tsung-Hsun Chiang, Chien-Chih Liao, Wen-Hung Chuang, Min-Yen Tsai, Bo-Jiun Hu
  • Patent number: 10217906
    Abstract: A light-emitting device includes a semiconductor structure including a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a surrounding part surrounding the semiconductor structure and exposing a surface of the first semiconductor layer; a first insulating structure formed on the semiconductor structure, including a plurality of protrusions covering the surface of the first semiconductor layer and a plurality of recesses exposing the surface of the first semiconductor layer; a first contact portion formed on the surrounding part and contacting the surface of the first semiconductor layer by the plurality of recesses; a first pad formed on the semiconductor structure; and a second pad formed on the semiconductor structure.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: February 26, 2019
    Assignee: EPISTAR CORPORATION
    Inventors: Chao-Hsing Chen, Jia-Kuen Wang, Tzu-Yao Tseng, Wen-Hung Chuang, Cheng-Lin Lu
  • Patent number: 10199544
    Abstract: A light-emitting device comprises a semiconductor stack comprising a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a first pad on the semiconductor stack; a second pad on the semiconductor stack, wherein the first pad and the second pad are separated from each other with a distance, which define a region between the first pad and the second pad on the semiconductor stack; and multiple vias penetrating the active layer to expose the first semiconductor layer, wherein the first pad and the second pad are formed on regions other than the multiple vias.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: February 5, 2019
    Assignee: EPISTAR CORPORATION
    Inventors: Chao-Hsing Chen, Jia-Kuen Wang, Tzu-Yao Tseng, Bo-Jiun Hu, Tsung-Hsun Chiang, Wen-Hung Chuang, Kuan-Yi Lee, Yu-Ling Lin, Chien-Fu Shen, Tsun-Kai Ko
  • Patent number: 10153402
    Abstract: A light-emitting element includes a semiconductor light-emitting stack including a first semiconductor layer, an active layer, and a second semiconductor layer; a first conductive layer disposed on the second semiconductor layer and electrically connecting the second semiconductor layer; a second conductive layer disposed on the second semiconductor layer and electrically connecting the first semiconductor layer; and a cushion part disposed on the semiconductor light-emitting stack; wherein in a top view, the cushion part is disposed in a center region of the light-emitting element.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: December 11, 2018
    Assignee: EPISTAR CORPORATION
    Inventors: Chao-Hsing Chen, Tsung-Hsun Chiang, Chien-Chih Liao, Wen-Hung Chuang, Min-Yen Tsai, Bo-Jiun Hu
  • Publication number: 20180233631
    Abstract: A light-emitting device comprises a semiconductor stack comprising a first semiconductor layer, a second semiconductor layer, and an active layer formed between the first semiconductor layer and the second semiconductor layer; a first pad on the semiconductor stack; a second pad on the semiconductor stack, wherein the first pad and the second pad are separated from each other with a distance, which define a region between the first pad and the second pad on the semiconductor stack; and multiple vias penetrating the active layer to expose the first semiconductor layer, wherein the first pad and the second pad are formed on regions other than the multiple vias.
    Type: Application
    Filed: April 9, 2018
    Publication date: August 16, 2018
    Inventors: Chao-Hsing CHEN, Jia-Kuen WANG, Tzu-Yao TSENG, Bo-Jiun HU, Tsung-Hsun CHIANG, Wen-Hung CHUANG, Kuan-Yi LEE, Yu-Ling LIN, Chien-Fu SHEN, Tsun-Kai KO
  • Publication number: 20180212110
    Abstract: A light-emitting device includes a semiconductor structure comprising a surface and a side wall inclined to the surface, wherein the semiconductor structure comprises a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an active layer between the first semiconductor layer and the second semiconductor layer, and the second semiconductor layer comprises a first edge and a first area; and a reflective layer located on the semiconductor structure and comprising an outer edge and a second area; wherein a distance between the first edge and the outer edge is between 0 ?m and 10 ?m, and the second area of the reflective layer is not less than 80% of the first area of the second semiconductor layer.
    Type: Application
    Filed: January 18, 2018
    Publication date: July 26, 2018
    Inventors: Chao-Hsing CHEN, Jia-Kuen WANG, Wen-Hung CHUANG, Tzu-Yao TSENG, Cheng-Lin LU
  • Patent number: D824864
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: August 7, 2018
    Assignee: EPISTAR CORPORATION
    Inventors: Chao Hsing Chen, Tsung Hsun Chiang, Chien Chih Liao, Wen Hung Chuang, Min Yen Tsai, Bo Jiun Hu, Tzu Yao Tseng, Jia Kuen Wang, Tsun Kai Ko, Chien Fu Shen, Kuan Yi Lee