Patents by Inventor Yuan-Fu CHUNG

Yuan-Fu CHUNG 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: 20240339447
    Abstract: An electrostatic discharge protection device is provided. The electrostatic discharge protection device includes a P-type semiconductor substrate, P-type and N-type well regions, a deep N-type well region, first N-type and P-type doped regions, second N-type and P-type doped regions. The P-type and N-type well regions are located in the P-type semiconductor substrate. The deep N-type well region is located in the P-type semiconductor substrate and below the P-type well region. The first N-type and P-type doped regions are located on the P-type well region. The second N-type and P-type doped regions are located on the N-type well region. The first P-type doped region is electrically connected to the second N-type doped region.
    Type: Application
    Filed: March 13, 2024
    Publication date: October 10, 2024
    Inventors: Tzung-Lin LI, Yuan-Fu CHUNG, Tung-Hsing LEE
  • Publication number: 20240112963
    Abstract: A semiconductor structure is provided. The semiconductor structure includes a semiconductor wafer and a test structure. The semiconductor wafer has a substrate having a scribe line area, a first die area and a second die area. The first die area and the second die area are separated by the scribe line area extending along a first direction. The test structure is disposed in the scribe line area. The test structure includes a test device and a first test pad. The test device has a physical characteristic similar to a semiconductor device fabricated in the first die area or the second die area. The first test pad is electrically connected to the test device. A first distance between the first test pad and the first die area gradually increases from a center region to a peripheral region of the first test pad in the first direction.
    Type: Application
    Filed: August 8, 2023
    Publication date: April 4, 2024
    Inventors: Yu-Tung CHEN, Pei-Haw TSAO, Kuo-Lung FAN, Yuan-Fu CHUNG
  • Publication number: 20230061138
    Abstract: A semiconductor device structure includes a semiconductor substrate, a first device formed in the first region of the semiconductor substrate and a second device formed in the second region of the semiconductor substrate. The first device includes a first gate structure on the semiconductor substrate. The first gate structure includes a first gate dielectric layer on the semiconductor substrate and a first gate layer on the first gate dielectric layer. The second device includes a second gate structure on the semiconductor substrate. The second gate structure includes a second gate dielectric layer on the semiconductor substrate and a second gate layer on the second gate dielectric layer. The first gate dielectric layer of the first device and the second gate dielectric layer of the second device have different dielectric material compositions.
    Type: Application
    Filed: August 2, 2022
    Publication date: March 2, 2023
    Inventors: Yu-Lin YANG, Ming-Cheng LEE, Yuan-Fu CHUNG
  • Patent number: 10236285
    Abstract: A semiconductor device includes a semiconductor substrate and a pair of first well regions formed in the semiconductor substrate, wherein the pair of first well regions have a first conductivity type and are separated by at least one portion of the semiconductor substrate. The semiconductor device also includes a first doping region formed in a portion of at least one portion of the semiconductor substrate separating the pair of first well regions, and a pair of second doping regions, respectively formed in one of the pair of first well regions, having the first conductivity type. Further, the semiconductor device includes a pair of insulating layers, respectively formed over a portion of the semiconductor substrate to cover a portion of the first doped region and one of the pair of second doping regions.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: March 19, 2019
    Assignee: MEDIATEK INC.
    Inventors: Chien-Kai Huang, Yuan-Fu Chung, Bo-Shih Huang, Chang-Tzu Wang
  • Patent number: 10096543
    Abstract: The present invention provides a semiconductor capacitor structure. The semiconductor capacitor structure comprises a first metal layer, a second metal layer and a first dielectric layer. The first metal layer is arranged to be a part of a first electrode of the semiconductor capacitor structure, and the first metal layer comprises a first portion and a second portion. The first portion is formed to have a first pattern, and the second portion is connected to the first portion. The second metal layer is arranged to be a part of a second electrode of the semiconductor capacitor structure, and the first dielectric layer is formed between the first metal layer and the second metal layer.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: October 9, 2018
    Assignee: MediaTek Inc.
    Inventors: Chien-Kai Huang, Yuan-Fu Chung, Yuan-Hung Chung
  • Patent number: 9793337
    Abstract: An integrated circuit includes a first polysilicon region having a first grain size formed on a substrate. The integrated circuit also includes a second polysilicon region, having a second grain size different from the first grain size, formed on the substrate. The first polysilicon region is doped with a first dopant of a first conductive type and a second dopant selected from elements of group IIIA and group IVA which has an atomic weight heavier than that of silicon.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: October 17, 2017
    Assignee: MEDIATEK INC.
    Inventors: Yuan-Fu Chung, Chu-Wei Hu, Yuan-Hung Chung
  • Publication number: 20170229442
    Abstract: A semiconductor device includes a semiconductor substrate and a pair of first well regions formed in the semiconductor substrate, wherein the pair of first well regions have a first conductivity type and are separated by at least one portion of the semiconductor substrate. The semiconductor device also includes a first doping region formed in a portion of at least one portion of the semiconductor substrate separating the pair of first well regions, and a pair of second doping regions, respectively formed in one of the pair of first well regions, having the first conductivity type. Further, the semiconductor device includes a pair of insulating layers, respectively formed over a portion of the semiconductor substrate to cover a portion of the first doped region and one of the pair of second doping regions.
    Type: Application
    Filed: April 24, 2017
    Publication date: August 10, 2017
    Inventors: Chien-Kai HUANG, Yuan-Fu CHUNG, Bo-Shih HUANG, Chang-Tzu WANG
  • Patent number: 9666576
    Abstract: An electrostatic discharge (ESD) protection device includes a semiconductor substrate and a pair of first well regions formed in the semiconductor substrate, wherein the pair of first well regions have a first conductivity type and are separated by at least one portion of the semiconductor substrate. In addition, the ESD protection device further includes a first doping region formed in a portion of the at least one portion of the semiconductor substrate separating the pair of first well regions, having a second conductivity type opposite to the first conductivity type. Moreover, the ESD protection device further includes a pair of second doping regions respectively formed in one of the first well regions, having the first conductivity type, and a pair of insulating layers respectively formed over a portion of the semiconductor substrate to cover a portion of the first doped region and one of the second doping regions.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: May 30, 2017
    Assignee: MEDIATEK INC.
    Inventors: Chien-Kai Huang, Yuan-Fu Chung, Bo-Shih Huang, Chang-Tzu Wang
  • Patent number: 9508786
    Abstract: A method of fabricating an integrated circuit is also provided. The method includes forming a first polysilicon region having an initial grain size on a substrate. The first polysilicon region is implanted with a first dopant of a first conductivity type and a second dopant. After the implantation, the first polysilicon region has a first grain size larger than the initial grain size. Then, a laser rapid thermal annealing process is performed to the first polysilicon region.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: November 29, 2016
    Assignee: MEDIATEK INC.
    Inventors: Yuan-Fu Chung, Chu-Wei Hu, Yuan-Hung Chung
  • Publication number: 20160276338
    Abstract: An integrated circuit includes a first polysilicon region having a first grain size formed on a substrate. The integrated circuit also includes a second polysilicon region, having a second grain size different from the first grain size, formed on the substrate. The first polysilicon region is doped with a first dopant of a first conductive type and a second dopant selected from elements of group IIIA and group IVA which has an atomic weight heavier than that of silicon.
    Type: Application
    Filed: May 27, 2016
    Publication date: September 22, 2016
    Inventors: Yuan-Fu CHUNG, Chu-Wei HU, Yuan-Hung CHUNG
  • Patent number: 9379175
    Abstract: An integrated circuit includes a first polysilicon region having a first grain size formed on a substrate. The integrated circuit also includes a second polysilicon region, having a second grain size different from the first grain size, formed on the substrate. Furthermore, a method of fabricating an integrated circuit is also provided. The method includes forming a first polysilicon region having an initial grain size on a substrate. The first polysilicon region is implanted with a first dopant of a first conductivity type and a second dopant. After the implantation, the first polysilicon region has a first grain size larger than the initial grain size. Then, a laser rapid thermal annealing process is performed to the first polysilicon region.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: June 28, 2016
    Assignee: MEDIATEK INC.
    Inventors: Yuan-Fu Chung, Chu-Wei Hu, Yuan-Hung Chung
  • Publication number: 20160141285
    Abstract: An electrostatic discharge (ESD) protection device includes a semiconductor substrate and a pair of first well regions formed in the semiconductor substrate, wherein the pair of first well regions have a first conductivity type and are separated by at least one portion of the semiconductor substrate. In addition, the ESD protection device further includes a first doping region formed in a portion of the at least one portion of the semiconductor substrate separating the pair of first well regions, having a second conductivity type opposite to the first conductivity type. Moreover, the ESD protection device further includes a pair of second doping regions respectively formed in one of the first well regions, having the first conductivity type, and a pair of insulating layers respectively formed over a portion of the semiconductor substrate to cover a portion of the first doped region and one of the second doping regions.
    Type: Application
    Filed: October 16, 2015
    Publication date: May 19, 2016
    Inventors: Chien-Kai HUANG, Yuan-Fu CHUNG, Bo-Shih HUANG, Chang-Tzu WANG
  • Publication number: 20160049462
    Abstract: The present invention provides a semiconductor capacitor structure. The semiconductor capacitor structure comprises a first metal layer, a second metal layer and a first dielectric layer. The first metal layer is arranged to be a part of a first electrode of the semiconductor capacitor structure, and the first metal layer comprises a first portion and a second portion. The first portion is formed to have a first pattern, and the second portion is connected to the first portion. The second metal layer is arranged to be a part of a second electrode of the semiconductor capacitor structure, and the first dielectric layer is formed between the first metal layer and the second metal layer.
    Type: Application
    Filed: June 23, 2015
    Publication date: February 18, 2016
    Inventors: Chien-Kai Huang, Yuan-Fu Chung, Yuan-Hung Chung
  • Publication number: 20160043162
    Abstract: A method of fabricating an integrated circuit is also provided. The method includes forming a first polysilicon region having an initial grain size on a substrate. The first polysilicon region is implanted with a first dopant of a first conductivity type and a second dopant. After the implantation, the first polysilicon region has a first grain size larger than the initial grain size. Then, a laser rapid thermal annealing process is performed to the first polysilicon region.
    Type: Application
    Filed: October 19, 2015
    Publication date: February 11, 2016
    Inventors: Yuan-Fu CHUNG, Chu-Wei HU, Yuan-Hung CHUNG
  • Publication number: 20150187757
    Abstract: An integrated circuit includes a first polysilicon region having a first grain size formed on a substrate. The integrated circuit also includes a second polysilicon region, having a second grain size different from the first grain size, formed on the substrate. Furthermore, a method of fabricating an integrated circuit is also provided. The method includes forming a first polysilicon region having an initial grain size on a substrate. The first polysilicon region is implanted with a first dopant of a first conductivity type and a second dopant. After the implantation, the first polysilicon region has a first grain size larger than the initial grain size. Then, a laser rapid thermal annealing process is performed to the first polysilicon region.
    Type: Application
    Filed: December 2, 2014
    Publication date: July 2, 2015
    Inventors: Yuan-Fu CHUNG, Chu-Wei HU, Yuan-Hung CHUNG