Patents by Inventor Yi-Wen Ku

Yi-Wen Ku 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: 20120211794
    Abstract: This disclosure discloses a light-emitting device. The light-emitting device comprises: a light-emitting stack having an upper surface and a lower surface; a pad, arranged on the upper surface, comprising: a first bonding region; and a second bonding region physically connected to the first bonding region through a connecting region having a connecting width; a first electrode connected to the first bonding region; a second electrode connected to the second bonding region; and a third electrode extending from the pad and arranged between the first electrode and the second electrode. At least one of the first electrode, the second electrode, and the third electrode has a width smaller than the connecting width.
    Type: Application
    Filed: April 30, 2012
    Publication date: August 23, 2012
    Applicant: EPISTAR CORPORATION
    Inventors: Chien-Fu SHEN, Cheng-Ta Kuo, Wei-Shou Chen, Tsung-Hsien Liu, Yi-Wen Ku, Min-Hsun Hsieh
  • Patent number: 8188505
    Abstract: A light-emitting device comprises a substrate, an epitaxial structure formed on the substrate including a first semiconductor layer, a second semiconductor layer, and a light-emitting layer formed between the first semiconductor layer and the second semiconductor layer. A trench is formed in the epitaxial structure to expose a part of side surface of the epitaxial structure and a part of surface of the first semiconductor layer, so that a first conductive structure is formed on the part of surface of the first semiconductor layer in the trench, and a second conductive structure is formed on the second semiconductor layer. The first conductive structure includes a first electrode and a first pad electrically contacted with each other. The second conductive structure includes a second electrode and a second pad electrically contacted with each other. Furthermore, the area of at least one of the first pad and the second pad is between 1.5×104?m2 and 6.2×104 ?m2.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: May 29, 2012
    Assignee: Epistar Corporation
    Inventors: Chien-Fu Shen, Cheng-Ta Kuo, Wei-Shou Chen, Tsung-Hsien Liu, Yi-Wen Ku, Min-Hsun Hsieh
  • Publication number: 20120061691
    Abstract: This disclosure discloses a light-emitting device. The light-emitting device comprises: a light-emitting array comprising a first light-emitting unit and a second light-emitting unit electrically connected in serial with the first light-emitting unit; at least two first bonding pads formed on the first light-emitting unit; and at least two second bonding pads formed on the second light-emitting unit. One of the two first bonding pads is in a floating level, and one of the two second bonding pads is in a floating level.
    Type: Application
    Filed: March 15, 2011
    Publication date: March 15, 2012
    Inventors: Chao-Hsing CHEN, Chien-Kai Chung, Hui-Chen Yeh, Yi-Wen Ku
  • Publication number: 20120049227
    Abstract: A light-emitting device of an embodiment of the present application comprises a semiconductor layer sequence provided with a first main side, a second main side, and an active layer; a beveled trench formed in the semiconductor layer sequence, having a top end close to the second main side, a bottom end, and an inner sidewall connecting the top end and the bottom end. In the embodiment, the inner sidewall is an inclined surface. The light-emitting device further comprises a dielectric layer disposed on the inner sidewall of the beveled trench and the second main side; a first metal layer formed on the dielectric layer; a carrier substrate; and a first connection layer connecting the carrier substrate and the semiconductor layer sequence.
    Type: Application
    Filed: August 30, 2011
    Publication date: March 1, 2012
    Inventors: Chao-Hsing CHEN, Yu-Chen Yang, Li-Ping Jou, Hui-Chun Yeh, Yi-Wen Ku
  • Patent number: 8076686
    Abstract: A light-emitting diode and the manufacturing method thereof are disclosed. The manufacturing method includes the steps of: sequentially forming a bonding layer, a geometric pattern layer, a reflection layer, an epitaxial structure and a first electrode on a permanent substrate, wherein the geometric pattern layer has a periodic structure; and forming a second electrode on one side of the permanent substrate.
    Type: Grant
    Filed: March 10, 2008
    Date of Patent: December 13, 2011
    Assignee: Epistar Corporation
    Inventors: Kuo-Hui Yu, Yu-Cheng Yang, An-Ru Lin, Tsun-Kai Ko, Wei-Shou Chen, Yi-Wen Ku, Cheng-Ta Kuo
  • Publication number: 20090224272
    Abstract: A light-emitting diode and the manufacturing method thereof are disclosed. The manufacturing method comprises the steps of: sequentially forming a bonding layer, a geometric pattern layer, a reflection layer, an epitaxial structure and a first electrode on a permanent substrate, wherein the geometric pattern layer has a periodic structure; and forming a second electrode on one side of the permanent substrate.
    Type: Application
    Filed: March 10, 2008
    Publication date: September 10, 2009
    Applicant: EPISTAR CORPORATION
    Inventors: Kuo-Hui Yu, Yu-Cheng Yang, An-Ru Lin, Tsun-Kai Ko, Wei-Shou Chen, Yi-Wen Ku, Cheng-Ta Kuo
  • Publication number: 20090140280
    Abstract: A light-emitting device comprises a substrate, an epitaxial structure formed on the substrate including a first semiconductor layer, a second semiconductor layer, and a light-emitting layer formed between the first semiconductor layer and the second semiconductor layer. A trench is formed in the epitaxial structure to expose a part of side surface of the epitaxial structure and a part of surface of the first semiconductor layer, so that a first conductive structure is formed on the part of surface of the first semiconductor layer in the trench, and a second conductive structure is formed on the second semiconductor layer. The first conductive structure includes a first electrode and a first pad electrically contacted with each other. The second conductive structure includes a second electrode and a second pad electrically contacted with each other. Furthermore, the area of at least one of the first pad and the second pad is between 1.5×104 ?m and 6.2×104 ?m.
    Type: Application
    Filed: November 21, 2008
    Publication date: June 4, 2009
    Applicant: EPISTAR CORPORATION
    Inventors: Chien-Fu Shen, Cheng-Ta Kuo, Wei-Shou Chen, Tsung-Hsien Liu, Yi-Wen Ku, Min-Hsun Hsieh