Patents by Inventor Wen Ku

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).

  • Patent number: 9048379
    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: Grant
    Filed: December 2, 2013
    Date of Patent: June 2, 2015
    Assignee: EPISTAR CORPORATION
    Inventors: Chao-Hsing Chen, Yu-Chen Yang, Li-Ping Jou, Hui-Chun Yeh, Yi-Wen Ku
  • Patent number: 9035329
    Abstract: The light-emitting device having an equivalent circuit, includes at least four terminals, numbered from first terminal to fourth terminal, for electrical power feeding; a first light-emitting diode, arranged between the first terminal and the second terminal, configured to not emit light when a voltage is applied between the second terminal and one of the third terminal and the fourth terminal, and configured to emit light when a. voltage is applied between the first terminal and one of the third terminal and the four the terminal; and a second light-emitting diode, arranged between the third terminal and the fourth terminal, and configured to not emit light when the voltage is applied between the third terminal and one of the first terminal and the second terminal and configured to emit light when a voltage is applied between the fourth terminal and one of the first terminal and the second terminal.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: May 19, 2015
    Assignee: Epistar Corporation
    Inventors: Chao-Hsing Chen, Chien-Kai Chung, Hui-chen Yeh, Yi-Wen Ku
  • Patent number: 9031096
    Abstract: A multimedia data system comprising a synchronization unit. The synchronization unit receives a demodulated bitstream, checks whether a FAW pattern corresponding to a candidate of the bitstream exists, checks whether an additional information corresponding to the candidate of the bitstream is valid when the FAW pattern exists, determines a hit weighting corresponding to the candidate according to the checking result, determines whether the hit weighting meets a criterion and outputs a synchronization signal when the hit weighting meets the criterion.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: May 12, 2015
    Assignee: MediaTek Inc.
    Inventors: Hsing-Ju Wei, Chien-Hua Hsu, Po-Wen Ku
  • Publication number: 20140367733
    Abstract: A light-emitting device comprises: a light-emitting stack having an upper side, a first edge having an end point, and a second edge opposite to the first edge; a first bonding region arranged on the upper side, near the first edge, and far from the end point; a second bonding region separated from to the first bonding region by a first distance and being far from the end point; a third bonding region arranged on the upper side; a fourth bonding region separated from the third bonding region by a second distance longer than the first distance; a first electrode connected to the first bonding region; a second electrode connected to the second bonding region; a third electrode connected to the third bonding region; a fourth electrode connected to the fourth bonding region; and a fifth electrode connected to the first bonding region and pointing to the fourth bonding region.
    Type: Application
    Filed: September 2, 2014
    Publication date: December 18, 2014
    Inventors: Chien-Fu SHEN, Cheng-Ta Kuo, Wei-Shou Chen, Tsung-Hsien Liu, Yi-Wen Ku, Min-Hsun Hsieh
  • Publication number: 20140323890
    Abstract: Embodiments of the invention disclose a method and a system for signal analyzing and a processing module of the system. The signal analyzing system includes a plurality of first electrodes, a plurality of second electrodes, and a processing module. The first electrodes transmit a plurality of first input signals. The second electrodes transmit a plurality of second input signals. The processing module generates a body electrical signal according to at least one of the plurality of first input signals and at least one of the plurality of second input signals, generates a first filtered signal corresponding to the plurality of first input signals, generates a second filtered signal corresponding to the plurality of second input signals, and generates a lead signal according to the body electrical signal, the first filtered signal and the second filtered signal.
    Type: Application
    Filed: April 29, 2013
    Publication date: October 30, 2014
    Applicant: MEDIATEK INC.
    Inventor: Po-Wen Ku
  • Patent number: 8823039
    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: Grant
    Filed: April 30, 2012
    Date of Patent: September 2, 2014
    Assignee: Epistar Corporation
    Inventors: Chien-Fu Shen, Cheng-Ta Kuo, Wei-Shou Chen, Tsung-Hsien Liu, Yi-Wen Ku, Min-Hsun Hsieh
  • Publication number: 20140084324
    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: December 2, 2013
    Publication date: March 27, 2014
    Applicant: EPISTAR CORPORATION
    Inventors: Chao-Hsing CHEN, Yu-Chen YANG, Li-Ping JOU, Hui-Chun YEH, Yi-Wen KU
  • Patent number: 8598614
    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: Grant
    Filed: August 30, 2011
    Date of Patent: December 3, 2013
    Assignee: Epistar Corporation
    Inventors: Chao-Hsing Chen, Yu-Chen Yang, Li-Ping Jou, Hui-Chun Yeh, Yi-Wen Ku
  • Publication number: 20130049051
    Abstract: Disclosed is a light-emitting device comprising: a semiconductor stack layer; a reflective layer on the semiconductor stack layer; a first buffer layer comprising a compound comprising a metallic element and a non-metallic element on the reflective layer; a first electrode; and an electrical insulating layer disposed between the first buffer layer and the first electrode.
    Type: Application
    Filed: August 28, 2012
    Publication date: February 28, 2013
    Applicant: Epistar Corporation
    Inventors: Jia-Kuen Wang, Chien-Fu Shen, Chao-Hsing Chen, Yu-Chen Yang, Hui-Chun Yeh, Yl-Wen Ku, Hung-Che Chen, Chih-Nan Lin
  • 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: 20100131807
    Abstract: A decoding algorithm for quadratic residue codes applicable to the decoding of all quadratic residue codes is provided. The decoding algorithm employs digital signals to obtain a plurality of known syndromes. These known syndromes are used to calculate a plurality of unknown syndromes. The inverse-free Berlekamp-Massey algorithm is then used to calculate the error polynomial, after which the Chien search algorithm is used to determine the error locations. Adjustments can then be made to the digital signal bits corresponding to the error locations to obtain the correct code.
    Type: Application
    Filed: November 26, 2008
    Publication date: May 27, 2010
    Applicant: I-SHOU UNIVERSITY
    Inventors: Trieu-Kien TRUONG, Tsung-Ching LIN, Pei-Yu SHIH, Wen-Ku SU
  • 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
  • Publication number: 20090080464
    Abstract: A multimedia data system comprising a synchronization unit. The synchronization unit receives a demodulated bitstream, checks whether a FAW pattern corresponding to a candidate of the bitstream exists, checks whether an additional information corresponding to the candidate of the bitstream is valid when the FAW pattern exists, determines a hit weighting corresponding to the candidate according to the checking result, determines whether the hit weighting meets a criterion and outputs a synchronization signal when the hit weighting meets the criterion.
    Type: Application
    Filed: September 24, 2007
    Publication date: March 26, 2009
    Applicant: MEDIATEK INC.
    Inventors: Hsing-Ju Wei, Chien-Hua Hsu, Po-Wen Ku
  • Patent number: 7467020
    Abstract: According to the claimed invention, a DSP is disclosed. The DSP comprises a processing unit for processing the data stream, a first memory coupled to the processing unit for storing a destination volume value, and a second memory coupled to the processing unit for storing a time_determining value wherein the processing unit adjusts the volume of the signal stored in the data stream according to the time_determining value such that the adjustment from a current volume value of the signal to the destination volume value is accomplished within a predetermined time.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: December 16, 2008
    Assignee: Media Tek Inc.
    Inventor: Po-Wen Ku
  • Patent number: D687396
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: August 6, 2013
    Assignee: Epistar Corporation
    Inventors: Chao-Hsing Chen, Chien-Fu Shen, Tsun-Kai Ko, Yi-Wen Ku