Patents by Inventor Hui-Chun Hsu

Hui-Chun 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
  • 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
  • Publication number: 20130287873
    Abstract: The disclosure provides a pharmaceutical composition for promoting wound healing, including an effective amount of a Sambucus plant or an Isatis plant as an active ingredient for promoting wound healing; and a pharmaceutically acceptable carrier or medium, wherein the Sambucus plant is Sambucus formosana Nakai, and the Isatis plant is Isatis indigotica Fort.
    Type: Application
    Filed: April 26, 2013
    Publication date: October 31, 2013
    Applicant: Industrial Technology Research Institute
    Inventors: Pei-Yi TSAI, Hsiang-Wen TSENG, Yen-Chun CHEN, Hui-Chun HSU, Yi-Hung WEN, Chun-Chung WANG, Shu-Jiau CHIOU
  • Patent number: 8509369
    Abstract: A frequency synthesis system with self-calibrated loop stability and bandwidth, which outputs an output signal based on an input signal and includes a detector, a charge pump, a filter, a controllable oscillator and a programmable frequency divider. The detector produces a detection signal based on a logic level difference between the input signal and a feedback signal. The charge pump is connected to the detector in order to produce a control signal based on the detection signal. The filter is connected to the charge pump in order to produce a tuning signal based on the control signal. The controllable oscillator is connected to the filter in order to produce the output signal based on the tuning signal. The programmable frequency divider is connected to the controllable oscillator in order to produce the feedback signal based on the output signal. The filter is a discrete time loop filter.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: August 13, 2013
    Assignee: Sunplus Technology Co., Ltd.
    Inventors: Chun-Liang Chen, Hui-Chun Hsu
  • Publication number: 20120293248
    Abstract: An active and configurable filter device includes a first filter with a first quality factor, a second filter with a second quality factor and a third filter with a third quality factor. The first filter defines a bandwidth and central frequency of the filter device. The second filter is connected to the first filter for using the spectrums of the first filter and second filter to define a lower bound frequency and sharpness of the bandwidth of the filter device. The third filter is connected to the second filter for using the spectrums of the first filter and third filter to define an upper bound frequency and sharpness of the bandwidth of the filter device. The first quality factor is an adjustable value in a range of 5 to 15, and the second and the third quality factors are each an adjustable value greater than 15.
    Type: Application
    Filed: March 22, 2012
    Publication date: November 22, 2012
    Applicant: Sunplus Technology Co., Ltd.
    Inventors: Chun-Liang CHEN, Hui-Chun HSU
  • Patent number: 8076962
    Abstract: In a frequency synthesis system with self-calibrated loop stability and bandwidth, a detector produces a detection signal based on a difference between an input signal and a feedback signal; a charge pump produces a control signal based on the detection signal; a filter produces a tuning signal and a source current based on the control signal; a bias circuit produces first and second bias signals; a controllable oscillator produces a differential output signal with a selected specific frequency; a differential-to-single converter produces an output signal with the selected specific frequency; a programmable frequency divider produces the feedback signal; a current mirror circuit receives the source current for producing a mirror current; a compensation circuit produces a compensation current based on the mirror current for compensating the variation of the damping factor and the bandwidth-to-reference frequency ratio.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: December 13, 2011
    Assignee: Sunplus Technology Co., Ltd.
    Inventors: Chun-Liang Chen, Hui-Chun Hsu
  • Patent number: 8067988
    Abstract: A low jitter and wide-range frequency synthesizer for low voltage operation includes a detector to generate a detection signal based on a logic level difference between an input signal and a feedback signal, a charge pump to generate a control signal based on the detection signal, a filter to generate a tuning signal based on the control signal, a bias circuit to generate a first bias signal and a second bias signal based on the tuning signal, a controllable oscillator to generate a differential output signal based on the first and the second bias signals, a differential to single ended converter to convert the differential output signal into an output signal, and a programmable frequency divider to generate the feedback signal based on the output signal.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: November 29, 2011
    Assignee: Sunplus Technology Co., Ltd.
    Inventors: Chun-Liang Chen, Hui-Chun Hsu
  • Publication number: 20110063004
    Abstract: In a frequency synthesis system with self-calibrated loop stability and bandwidth, a detector produces a detection signal based on a difference between an input signal and a feedback signal; a charge pump produces a control signal based on the detection signal; a filter produces a tuning signal and a source current based on the control signal; a bias circuit produces first and second bias signals; a controllable oscillator produces a differential output signal with a selected specific frequency; a differential-to-single converter produces an output signal with the selected specific frequency; a programmable frequency divider produces the feedback signal; a current mirror circuit receives the source current for producing a mirror current; a compensation circuit produces a compensation current based on the mirror current for compensating the variation of the damping factor and the bandwidth-to-reference frequency ratio.
    Type: Application
    Filed: September 9, 2010
    Publication date: March 17, 2011
    Applicant: Sunplus Technology Co., Ltd.
    Inventors: Chun-Liang Chen, Hui-Chun Hsu
  • Publication number: 20100214025
    Abstract: A low jitter and wide-range frequency synthesizer for low voltage operation includes a detector to generate a detection signal based on a logic level difference between an input signal and a feedback signal, a charge pump to generate a control signal based on the detection signal, a filter to generate a tuning signal based on the control signal, a bias circuit to generate a first bias signal and a second bias signal based on the tuning signal, a controllable oscillator to generate a differential output signal based on the first and the second bias signals, a differential to single ended converter to convert the differential output signal into an output signal, and a programmable frequency divider to generate the feedback signal based on the output signal.
    Type: Application
    Filed: February 18, 2010
    Publication date: August 26, 2010
    Applicant: Sunplus Technology Co., Ltd.
    Inventors: Chun-Liang Chen, Hui-Chun Hsu
  • Publication number: 20100067612
    Abstract: A frequency synthesis system with self-calibrated loop stability and bandwidth, which outputs an output signal based on an input signal and includes a detector, a charge pump, a filter, a controllable oscillator and a programmable frequency divider. The detector produces a detection signal based on a logic level difference between the input signal and a feedback signal. The charge pump is connected to the detector in order to produce a control signal based on the detection signal. The filter is connected to the charge pump in order to produce a tuning signal based on the control signal. The controllable oscillator is connected to the filter in order to produce the output signal based on the tuning signal. The programmable frequency divider is connected to the controllable oscillator in order to produce the feedback signal based on the output signal. The filter is a discrete time loop filter.
    Type: Application
    Filed: June 9, 2009
    Publication date: March 18, 2010
    Applicant: Sunplus Technology Co., Ltd.
    Inventors: Chun-Liang Chen, Hui-Chun Hsu
  • Publication number: 20070088090
    Abstract: The present invention discloses ?-bulnesene isolated from the essential oil of the plant of Pogostemon cablin. Steam distilled essential oil from the aerial parts of Pogostemon cablin was isolated to obtain ?-Bulnesene. The invented ?-Bulnesene inhibited platelet aggregation induced by platelet-activating factor (PAF) or arachidonic acid (AA). Use of the invented ?-bulnesene as anti-inflammation agent is disclosed. The invented ?-Bulnesene has the following chemical structure: wherein R1, R2 and R3 are respectively H, C51-C4 alkyl or isopropyl.
    Type: Application
    Filed: October 14, 2005
    Publication date: April 19, 2007
    Applicant: Yangsen Biotechnology Co., Ltd.
    Inventors: Hui-Chun Hsu, Wen-Chia Yang, Ying-Chieh Tsai
  • Patent number: 6797905
    Abstract: This invention discloses a rocker switch which provides a reliable movement and a heat-resistant rocker switch by redesigning the position holding mechanism. The rocker switch of the invention comprises: a common contact point, a close circuit contact point, a movable contact point permanently coupled to the common contact point, a rocking switch connecting to the movable contact point and rocking between a close circuit position and an open circuit position, and a position holding mechanism having a spring and an extension rod coupled to one end of the spring. The extension rod is used to change the position of the force acting between the spring and the rocking button and the force acting on the spring in order to improve the life of the spring and increase heat resistance.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: September 28, 2004
    Assignee: Zippy Technology Corp.
    Inventors: Yung-Hui Wang, Hui-Chun Hsu