Patents by Inventor Hui-Chun Chang

Hui-Chun Chang 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: 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: 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
  • Publication number: 20220011299
    Abstract: A reacting device of dual path synchronous immunochromatographic platform includes a seat, an upper housing, and a fluid dividing funnel. The seat contains two immunochromatographic carriers. The hollow pipe portion has two sloped structures. A force bearing portion of the fluid dividing funnel can be pressed down, so two fluid exits of the fluid dividing funnel move towards these two sloped structures. The specimen drops and is guided into these two immunochromatographic carriers respectively. A reaction result can be observable. The fluid dividing funnel can divide the specimen into two immunochromatographic carriers evenly. The sloped structure can increase the accuracy of specimen supply. Excess specimen can be scraped off for enhancing the solving accuracy. In addition, it can decrease the possibility of false positive problem.
    Type: Application
    Filed: July 4, 2021
    Publication date: January 13, 2022
    Inventors: MING-FENG WU, HUI-CHUN CHANG, JING-LIAN JHENG, YI-YUN HUNG, JEN-YING LI, HUI-CHEN CHEN, JIUNN-MIN WANG
  • Patent number: 8113781
    Abstract: A fan includes an impeller and a motor for driving the impeller to rotate. The motor includes a bushing and a rotating shaft penetrating through the bushing. The bushing includes a tube and at least one base connected with one end of the tube. An inner diameter of the tube is smaller than an inner diameter of the base so that the mechanism design variability is enhanced and the efficiency of the fan and the motor is enhanced by effectively utilizing an inner space of the bushing.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: February 14, 2012
    Assignee: Delta Electronics, Inc.
    Inventors: Hui-Chun Chang, Yi-Fang Chou, Li-Chen Lin
  • Publication number: 20110236237
    Abstract: A fan includes an impeller, a motor, a circuit board, a fan frame and a connecting member. The motor is used to drive the impeller to rotate. The circuit board is electrically connected to the motor. The impeller and the motor are accommodated in the fan frame. The connecting member is disposed at one side of the fan frame. The circuit board is disposed between the connecting member and the fan frame. Also, a fan assembly including such two fans is also disclosed.
    Type: Application
    Filed: June 2, 2011
    Publication date: September 29, 2011
    Inventors: Yi-Fang CHOU, Hui-Chun Chang, Chang-Yi Lu, Li-Chen Lin
  • Patent number: 7985056
    Abstract: A fan includes an impeller, a motor, a circuit board, a fan frame and a connecting member. The motor is used to drive the impeller to rotate. The circuit board is electrically connected to the motor. The impeller and the motor are accommodated in the fan frame. The connecting member is disposed at one side of the fan frame. The circuit board is disposed between the connecting member and the fan frame. Also, a fan assembly including such two fans is also disclosed.
    Type: Grant
    Filed: February 7, 2008
    Date of Patent: July 26, 2011
    Assignee: Delta Electronics, Inc.
    Inventors: Yi-Fang Chou, Hui-Chun Chang, Chang-Yi Lu, Li-Chen Lin
  • Publication number: 20090052820
    Abstract: A fan includes an impeller and a motor for driving the impeller to rotate. The motor includes a bushing and a rotating shaft penetrating through the bushing. The bushing includes a tube and at least one base connected with one end of the tube. An inner diameter of the tube is smaller than an inner diameter of the base so that the mechanism design variability is enhanced and the efficiency of the fan and the motor is enhanced by effectively utilizing an inner space of the bushing.
    Type: Application
    Filed: February 7, 2008
    Publication date: February 26, 2009
    Inventors: Hui-Chun CHANG, Yi-Fang CHOU, Li-Chen LIN
  • Publication number: 20080279694
    Abstract: A fan includes an impeller, a motor, a circuit board, a fan frame and a connecting member. The motor is used to drive the impeller to rotate. The circuit board is electrically connected to the motor. The impeller and the motor are accommodated in the fan frame. The connecting member is disposed at one side of the fan frame. The circuit board is disposed between the connecting member and the fan frame. Also, a fan assembly including such two fans is also disclosed.
    Type: Application
    Filed: February 7, 2008
    Publication date: November 13, 2008
    Inventors: Yi-Fang CHOU, Hui-Chun Chang, Chang-Yi Lu, Li-Chen Lin
  • Publication number: 20030114076
    Abstract: The present invention provides a chemical mechanical polishing apparatus for polishing a wafer. The chemical mechanical polishing apparatus comprises a platen, a polishing pad, a transparent element (transparent window), a slurry providing system, and a rotating carrier. The platen comprises a light source for projecting a light and a light detector for detecting the light reflected by the wafer. The polishing pad has a first opening on the platen. The transparent element is detachably located on the first opening to admit light. The slurry providing system provides slurry to the surface of the polishing pad. The rotating carrier holds the wafer and contacts the surface of the wafer with the slurry and the polishing pad to carry out the chemical mechanical polishing process.
    Type: Application
    Filed: December 14, 2001
    Publication date: June 19, 2003
    Inventors: Hui-Chun Chang, Tsang Jung Lin, Chao-Yuan Huang