Patents by Inventor Hui-Kai Hsu

Hui-Kai Hsu 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: 20240130246
    Abstract: A method for fabricating a semiconductor device includes the steps of first forming a first inter-metal dielectric (IMD) layer on a substrate and a metal interconnection in the first IMD layer, forming a magnetic tunneling junction (MTJ) and a top electrode on the metal interconnection, forming a spacer adjacent to the MTJ and the top electrode, forming a second IMD layer around the spacer, forming a cap layer on the top electrode, the spacer, and the second IMD layer, and then patterning the cap layer to form a protective cap on the top electrode and the spacer.
    Type: Application
    Filed: December 25, 2023
    Publication date: April 18, 2024
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Hui-Lin Wang, Po-Kai Hsu, Ju-Chun Fan, Ching-Hua Hsu, Yi-Yu Lin, Hung-Yueh Chen
  • Patent number: 11957061
    Abstract: A semiconductor device includes a substrate, a first dielectric layer, a second dielectric layer, and a third dielectric layer. The first dielectric layer is disposed on the substrate, around a first metal interconnection. The second dielectric layer is disposed on the first dielectric layer, around a via and a second metal interconnection. The second metal interconnection directly contacts the first metal interconnection. The third dielectric layer is disposed on the second dielectric layer, around a first magnetic tunneling junction (MTJ) structure and a third metal interconnection. The third metal interconnection directly contacts top surfaces of the first MTJ structure and the second metal interconnection, and the first MTJ structure directly contacts the via.
    Type: Grant
    Filed: May 23, 2023
    Date of Patent: April 9, 2024
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Hui-Lin Wang, Po-Kai Hsu, Ju-Chun Fan, Yi-Yu Lin, Ching-Hua Hsu, Hung-Yueh Chen
  • Patent number: 11956972
    Abstract: A semiconductor memory device includes a substrate having a memory area and a logic circuit area thereon, a first interlayer dielectric layer on the substrate, and a second interlayer dielectric layer on the substrate. An embedded memory cell structure is disposed within the memory area between the first interlayer dielectric layer and the second interlayer dielectric layer. The second interlayer dielectric layer includes a first portion covering the embedded memory cell structure within the memory area and a second portion covering the logic circuit area. A top surface of the first portion is coplanar with a top surface of the second portion.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: April 9, 2024
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Hui-Lin Wang, Si-Han Tsai, Ching-Hua Hsu, Chen-Yi Weng, Po-Kai Hsu
  • Patent number: 11950513
    Abstract: A method for fabricating a semiconductor device includes the steps of: forming a first inter-metal dielectric (IMD) layer on a substrate; forming a first metal interconnection and a second metal interconnection in the first IMD layer; forming a channel layer on the first metal interconnection and the second metal interconnection; forming a magnetic tunneling junction (MTJ) stack on the channel layer; and removing the MTJ stack to form a MTJ.
    Type: Grant
    Filed: July 5, 2022
    Date of Patent: April 2, 2024
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Hui-Lin Wang, Wei Chen, Po-Kai Hsu, Yu-Ping Wang, Hung-Yueh Chen
  • Publication number: 20240099154
    Abstract: A magnetoresistive random access memory (MRAM) device includes a first array region and a second array region on a substrate, a first magnetic tunneling junction (MTJ) on the first array region, a first top electrode on the first MTJ, a second MTJ on the second array region, and a second top electrode on the second MTJ. Preferably, the first top electrode and the second top electrode include different nitrogen to titanium (N/Ti) ratios.
    Type: Application
    Filed: November 21, 2023
    Publication date: March 21, 2024
    Applicant: UNITED MICROELECTRONICS CORP
    Inventors: Hui-Lin Wang, Si-Han Tsai, Dong-Ming Wu, Chen-Yi Weng, Ching-Hua Hsu, Ju-Chun Fan, Yi-Yu Lin, Che-Wei Chang, Po-Kai Hsu, Jing-Yin Jhang
  • Patent number: 11925035
    Abstract: A hybrid random access memory for a system-on-chip (SOC), including a semiconductor substrate with a MRAM region and a ReRAM region, a first dielectric layer on the semiconductor substrate, multiple ReRAM cells in the first dielectric layer on the ReRAM region, a second dielectric layer above the first dielectric layer, and multiple MRAM cells in the second dielectric layer on the MRAM region.
    Type: Grant
    Filed: October 26, 2022
    Date of Patent: March 5, 2024
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Po-Kai Hsu, Hui-Lin Wang, Ching-Hua Hsu, Yi-Yu Lin, Ju-Chun Fan, Hung-Yueh Chen
  • Patent number: 11917923
    Abstract: A magnetoresistive random access memory (MRAM) structure, including a substrate and multiple MRAM cells on the substrate, wherein the MRAM cells are arranged in a memory region adjacent to a logic region. An ultra low-k (ULK) layer covers the MRAM cells, wherein the surface portion of ultra low-k layer is doped with fluorine, and dents are formed on the surface of ultra low-k layer at the boundaries between the memory region and the logic region.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: February 27, 2024
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Hui-Lin Wang, Ching-Hua Hsu, Si-Han Tsai, Shun-Yu Huang, Chen-Yi Weng, Ju-Chun Fan, Che-Wei Chang, Yi-Yu Lin, Po-Kai Hsu, Jing-Yin Jhang, Ya-Jyuan Hung
  • Patent number: 11067725
    Abstract: The embodiments of the invention provide a multi-focal collimating lens and a headlight assembly for an automotive low beam. The multi-focal collimating lens includes a central collimating lens portion and two total internal reflection lens portions arranged on a left side and a right side of the central collimating lens portion. The central collimating lens portion and the total internal reflection lens portions share two focal points symmetrically located on both sides of a vertical symmetry plane of the multi-focal collimating lens. An upper edge and a lower edge of the multi-focal collimating lens are formed based on the two focal points, so that the headlight assembly is able to generate a cut-off line of the automotive low beam in a far-field light pattern of the multi-focal collimating lens.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: July 20, 2021
    Assignee: Lumileds LLC
    Inventors: Kang Lu, Ping Wu, YiYu Cao, Hui-Kai Hsu
  • Publication number: 20200103564
    Abstract: The embodiments of the invention provide a multi-focal collimating lens and a headlight assembly for an automotive low beam. The multi-focal collimating lens includes a central collimating lens portion and two total internal reflection lens portions arranged on a left side and a right side of the central collimating lens portion. The central collimating lens portion and the total internal reflection lens portions share two focal points symmetrically located on both sides of a vertical symmetry plane of the multi-focal collimating lens. An upper edge and a lower edge of the multi-focal collimating lens are formed based on the two focal points, so that the headlight assembly is able to generate a cut-off line of the automotive low beam in a far-field light pattern of the multi-focal collimating lens.
    Type: Application
    Filed: March 9, 2018
    Publication date: April 2, 2020
    Inventors: Kang Lu, Ping Wu, YiYu Cao, Hui-Kai Hsu
  • Publication number: 20190378956
    Abstract: The present disclosure provides a light emitting module including: a substrate supporting at least one light emitting component; an enclosing component surrounding the light emitting component and defining an interspace between an inner surface of the enclosing component and the light emitting component; a coating material applied in the interspace between the enclosing component and the light emitting component. The enclosing component is attached as a separate component on the substrate. The light emitting module according to the present disclosure has an improved manufacturing effectiveness and convenience, and less complexity, thus reducing the production cost.
    Type: Application
    Filed: June 6, 2019
    Publication date: December 12, 2019
    Inventors: Kang Lu, Hui-Kai Hsu, Xiaoke Ren, Meng Han
  • Publication number: 20150029723
    Abstract: The disclosure provides a light-emitting diode (LED) package structure, including: a lead frame; at least two light-emitting diode chips having different light-emitting wavelengths disposed on the lead frame; an encapsulant disposed over the lead frame and covering the light-emitting diode chips, wherein the encapsulant has a first concave portion; and an optical glue disposed in the first concave portion, wherein the optical glue has a plurality of scattering particles to uniformly mix the lights of different wavelengths emitted by the light-emitting diode chips.
    Type: Application
    Filed: April 11, 2014
    Publication date: January 29, 2015
    Applicant: LEXTAR ELECTRONICS CORPORATION
    Inventors: Shih-Ju Lo, Cheng-Ping Chang, Hui-Kai Hsu, I-Chun Lee, Wen-Kai Shao
  • Patent number: D668235
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: October 2, 2012
    Assignee: Lextar Electronics Corp.
    Inventors: Cheng-Ping Chang, Che-Ming Hsu, Hui-Kai Hsu
  • Patent number: D668623
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: October 9, 2012
    Assignee: Lextar Electronics Corp.
    Inventor: Hui-Kai Hsu
  • Patent number: D669044
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: October 16, 2012
    Assignee: Lextar Electronics Corp.
    Inventor: Hui-Kai Hsu
  • Patent number: D678226
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: March 19, 2013
    Assignee: Lextar Electronics Corp.
    Inventors: Hui-Kai Hsu, Che-Ming Hsu
  • Patent number: D679666
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: April 9, 2013
    Assignee: Lextar Electronics Corp.
    Inventors: Hui-Kai Hsu, Che-Ming Hsu
  • Patent number: D697876
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: January 21, 2014
    Assignee: Lextar Electronics Corp.
    Inventors: Hui-Kai Hsu, Che-Ming Hsu, Shih-Ju Lo, Kuan-Hao Chen
  • Patent number: D697877
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: January 21, 2014
    Assignee: Lextar Electronics Corp.
    Inventors: Hui-Kai Hsu, Che-Ming Hsu, Shih-Ju Lo, Kuan-Hao Chen
  • Patent number: D718726
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: December 2, 2014
    Assignee: Lextar Electronics Corporation
    Inventors: Shih-Ju Lo, Che-Ming Hsu, Lei-Hsin Liu, Yue-Ying Su, Hui-Kai Hsu
  • Patent number: D719111
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: December 9, 2014
    Assignee: Lextar Electronics Corporation
    Inventors: Shih-Ju Lo, Che-Ming Hsu, Lei-Hsin Liu, Yue-Ying Su, Hui-Kai Hsu