Patents by Inventor Yizhang Yang

Yizhang Yang 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: 20240119991
    Abstract: In an embodiment, a memory controller in an integrated circuit may generate refreshes for one or more DRAMs coupled to the integrated circuit according to a refresh rate. The integrated circuit may include one or more temperature sensors. A rate of change of the temperature may be determined from the temperature sensors. If the rate is greater than a threshold, the memory controller may generate refreshes according to a refresh rate specified by the DRAMs. If the rate is less than the threshold, the memory controller may generate refreshes at a reduced refresh rate.
    Type: Application
    Filed: October 17, 2023
    Publication date: April 11, 2024
    Inventors: Liang Deng, Norman J. Rohrer, Yizhang Yang, Arpit Mittal
  • Publication number: 20240088032
    Abstract: Microelectronic modules are described. In an embodiment, a microelectronic module includes a module substrate, a chip mounted onto the module substrate, and a semiconductor-based integrated passive device between the chip and the module substrate. The semiconductor-based integrated passive device may include an upper RDL stack-up with thicker wiring layers than a lower BEOL stack-up. The semiconductor-based integrated passive device may be further solder bonded or hybrid bonded with the chip.
    Type: Application
    Filed: September 14, 2022
    Publication date: March 14, 2024
    Inventors: Vidhya Ramachandran, Chi Nung Ni, Chueh-An Hsieh, Rekha Govindaraj, Jun Zhai, Long Huang, Rohan U. Mandrekar, Saumya K. Gandhi, Zhuo Yan, Yizhang Yang, Saurabh P. Sinha, Antonietta Oliva
  • Patent number: 11822399
    Abstract: A temperature control apparatus is disclosed. An integrated circuit (IC) includes a plurality of temperature sensors, a first thermal control loop, and a second thermal control loop. The first thermal control loop is configured to control temperature of the IC by reducing a frequency of a clock signal provided to the IC in response to a temperature at one of the plurality of temperature sensors reaching a first temperature threshold. The second thermal control loop is configured to control temperature of the IC by dithering the clock signal provided to the IC in response to a temperature at one of the plurality of temperature sensors reaching a second temperature threshold that is greater than the first temperature threshold.
    Type: Grant
    Filed: July 28, 2021
    Date of Patent: November 21, 2023
    Assignee: Apple Inc.
    Inventors: Doron Rajwan, Tal Kuzi, Keith Cox, Yizhang Yang
  • Patent number: 11823728
    Abstract: In an embodiment, a memory controller in an integrated circuit may generate refreshes for one or more DRAMs coupled to the integrated circuit according to a refresh rate. The integrated circuit may include one or more temperature sensors. A rate of change of the temperature may be determined from the temperature sensors. If the rate is greater than a threshold, the memory controller may generate refreshes according to a refresh rate specified by the DRAMs. If the rate is less than the threshold, the memory controller may generate refreshes at a reduced refresh rate.
    Type: Grant
    Filed: March 4, 2022
    Date of Patent: November 21, 2023
    Assignee: Apple Inc.
    Inventors: Liang Deng, Norman J. Rohrer, Yizhang Yang, Arpit Mittal
  • Publication number: 20230031415
    Abstract: A temperature control apparatus is disclosed. An integrated circuit (IC) includes a plurality of temperature sensors, a first thermal control loop, and a second thermal control loop. The first thermal control loop is configured to control temperature of the IC by reducing a frequency of a clock signal provided to the IC in response to a temperature at one of the plurality of temperature sensors reaching a first temperature threshold. The second thermal control loop is configured to control temperature of the IC by dithering the clock signal provided to the IC in response to a temperature at one of the plurality of temperature sensors reaching a second temperature threshold that is greater than the first temperature threshold.
    Type: Application
    Filed: July 28, 2021
    Publication date: February 2, 2023
    Inventors: Doron Rajwan, Tal Kuzi, Keith Cox, Yizhang Yang
  • Publication number: 20220406522
    Abstract: An inductor is disclosed, including a first wire, a non-conductive material, and a shell. The non-conductive material may cover the first wire, with a portion of each end of the first wire uncovered. The shell may include a top portion and a bottom portion and include at least one magnetized layer and at least one gap between the first portion and the second portion. The shell may also surround a portion of the non-conductive material.
    Type: Application
    Filed: August 29, 2022
    Publication date: December 22, 2022
    Inventors: David P. Cappabianca, Joseph T. DiBene, II, Shawn Searles, Le Wang, Yizhang Yang, Sean Cian O'Mathuna, Santosh Kulkarni, Paul McCloskey, Zoran Pavlovic, William Lawton, Graeme Maxwell, Joseph O'Brien, Hugh Charles Smiddy
  • Patent number: 11430606
    Abstract: An inductor is disclosed, including a first wire, a non-conductive material, and a shell. The non-conductive material may cover the first wire, with a portion of each end of the first wire uncovered. The shell may include a top portion and a bottom portion and include at least one magnetized layer and at least one gap between the first portion and the second portion. The shell may also surround a portion of the non-conductive material.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: August 30, 2022
    Assignee: Apple Inc.
    Inventors: David P. Cappabianca, Joseph T. DiBene, II, Shawn Searles, Le Wang, Yizhang Yang, Sean Cian O'Mathuna, Santosh Kulkarni, Paul McCloskey, Zoran Pavlovic, William Lawton, Graeme Maxwell, Joseph O'Brien, Hugh Charles Smiddy
  • Publication number: 20220254410
    Abstract: In an embodiment, a memory controller in an integrated circuit may generate refreshes for one or more DRAMs coupled to the integrated circuit according to a refresh rate. The integrated circuit may include one or more temperature sensors. A rate of change of the temperature may be determined from the temperature sensors. If the rate is greater than a threshold, the memory controller may generate refreshes according to a refresh rate specified by the DRAMs. If the rate is less than the threshold, the memory controller may generate refreshes at a reduced refresh rate.
    Type: Application
    Filed: March 4, 2022
    Publication date: August 11, 2022
    Inventors: Liang Deng, Norman J. Rohrer, Yizhang Yang, Arpit Mittal
  • Patent number: 11270753
    Abstract: In an embodiment, a memory controller in an integrated circuit may generate refreshes for one or more DRAMs coupled to the integrated circuit according to a refresh rate. The integrated circuit may include one or more temperature sensors. A rate of change of the temperature may be determined from the temperature sensors. If the rate is greater than a threshold, the memory controller may generate refreshes according to a refresh rate specified by the DRAMs. If the rate is less than the threshold, the memory controller may generate refreshes at a reduced refresh rate.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: March 8, 2022
    Assignee: Apple Inc.
    Inventors: Liang Deng, Norman J. Rohrer, Yizhang Yang, Arpit Mittal
  • Publication number: 20210201987
    Abstract: In an embodiment, a memory controller in an integrated circuit may generate refreshes for one or more DRAMs coupled to the integrated circuit according to a refresh rate. The integrated circuit may include one or more temperature sensors. A rate of change of the temperature may be determined from the temperature sensors. If the rate is greater than a threshold, the memory controller may generate refreshes according to a refresh rate specified by the DRAMs. If the rate is less than the threshold, the memory controller may generate refreshes at a reduced refresh rate.
    Type: Application
    Filed: February 23, 2021
    Publication date: July 1, 2021
    Inventors: Liang Deng, Norman J. Rohrer, Yizhang Yang, Arpit Mittal
  • Patent number: 10978136
    Abstract: In an embodiment, a memory controller in an integrated circuit may generate refreshes for one or more DRAMs coupled to the integrated circuit according to a refresh rate. The integrated circuit may include one or more temperature sensors. A rate of change of the temperature may be determined from the temperature sensors. If the rate is greater than a threshold, the memory controller may generate refreshes according to a refresh rate specified by the DRAMs. If the rate is less than the threshold, the memory controller may generate refreshes at a reduced refresh rate.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: April 13, 2021
    Assignee: Apple Inc.
    Inventors: Liang Deng, Norman J. Rohrer, Yizhang Yang, Arpit Mittal
  • Publication number: 20210020231
    Abstract: In an embodiment, a memory controller in an integrated circuit may generate refreshes for one or more DRAMs coupled to the integrated circuit according to a refresh rate. The integrated circuit may include one or more temperature sensors. A rate of change of the temperature may be determined from the temperature sensors. If the rate is greater than a threshold, the memory controller may generate refreshes according to a refresh rate specified by the DRAMs. If the rate is less than the threshold, the memory controller may generate refreshes at a reduced refresh rate.
    Type: Application
    Filed: July 18, 2019
    Publication date: January 21, 2021
    Inventors: Liang Deng, Norman J. Rohrer, Yizhang Yang, Arpit Mittal
  • Publication number: 20190221365
    Abstract: An inductor is disclosed, including a first wire, a non-conductive material, and a shell. The non-conductive material may cover the first wire, with a portion of each end of the first wire uncovered. The shell may include a top portion and a bottom portion and include at least one magnetized layer and at least one gap between the first portion and the second portion. The shell may also surround a portion of the non-conductive material.
    Type: Application
    Filed: August 24, 2017
    Publication date: July 18, 2019
    Inventors: David P. Cappabianca, Joseph T. DiBene, II, Shawn Searles, Le Wang, Yizhang Yang, Sean Cian O'Mathuna, Santosh Kulkarni, Paul McCloskey, Zoran Pavlovic, William Lawton, Graeme Maxwell, Joseph O'Brien, Hugh Charles Smiddy
  • Patent number: 10001800
    Abstract: Techniques are disclosed relating to power management of an integrated circuit. In one embodiment, an integrated circuit includes a plurality of temperature sensors configured to measure a plurality of temperatures at different locations in the integrated circuit. The integrated circuit further includes a power management circuit configured to determine a set of guard bands based on a temperature difference determined using the plurality of temperatures. The power management circuit is configured to adjust, using the set of guard bands, a particular one of the plurality of temperatures, and to use the adjusted particular temperature to manage power consumption of the integrated circuit. In some embodiments, the power management circuit is configured to manage the power consumption by adjusting a voltage supplied to the integrated circuit, the adjusted voltage being based on the adjusted particular temperature.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: June 19, 2018
    Assignee: Apple Inc.
    Inventors: Toshinari Takayanagi, Yizhang Yang
  • Patent number: 9583472
    Abstract: Packages and methods of formation are described. In an embodiment, a system in package (SiP) includes first and second redistribution layers (RDLs), stacked die between the first and second RDLs, and conductive pillars extending between the RDLs. A molding compound may encapsulate the stacked die and conductive pillars between the first and second RDLs.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: February 28, 2017
    Assignee: Apple Inc.
    Inventors: Chih-Ming Chung, Jun Zhai, Yizhang Yang
  • Patent number: 9442025
    Abstract: In some embodiments, a method may be provided for calibrating integrated circuit temperature sensors. The method may include sensing a first temperature using a first temperature sensor and a second temperature using a second temperature sensor. The first temperature sensor may be calibrated and is external to a package of the integrated circuit. The second temperature sensor may be included in the integrated circuit. The method may include increasing a temperature of the integrated circuit. The method may include allowing the integrated circuit and the package to thermally equilibrate over a first period of time. The method may include sensing a first slope of a temperature decay by the first temperature sensor. The method may include sensing a second slope of a temperature decay by the second temperature sensor. The method may include calibrating the second temperature sensor responsive to a difference between the first and second temperatures and the first and second slopes.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: September 13, 2016
    Assignee: Apple Inc.
    Inventors: Yizhang Yang, Jun Zhai
  • Publication number: 20160260695
    Abstract: Packages and methods of formation are described. In an embodiment, a system in package (SiP) includes first and second redistribution layers (RDLs), stacked die between the first and second RDLs, and conductive pillars extending between the RDLs. A molding compound may encapsulate the stacked die and conductive pillars between the first and second RDLs.
    Type: Application
    Filed: March 3, 2015
    Publication date: September 8, 2016
    Inventors: Chih-Ming Chung, Jun Zhai, Yizhang Yang
  • Patent number: 9385055
    Abstract: A method of assembling a semiconductor chip device is provided that includes placing an interposer on a first semiconductor chip. The interposer includes a first surface seated on the first semiconductor chip and a second surface adapted to thermally contact a heat spreader. The second surface includes a first aperture. A second semiconductor chip is placed in the first aperture.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: July 5, 2016
    Assignees: ATI Technologies ULC, Advanced Micro Devices, Inc.
    Inventors: Gamal Refai-Ahmed, Michael Z. Su, Bryan Black, Maxat Touzelbaev, Yizhang Yang
  • Patent number: 9318474
    Abstract: In some embodiments, a semiconductor device package assembly may include a first substrate. The semiconductor device package assembly may include a first die electrically connected to the first substrate such that the first die is directly bonded to the first substrate. The semiconductor device package assembly may include a second substrate directly bonded to a surface of the first die. The semiconductor device package assembly may include an electronic memory module. The electronic memory module may be directly bonded to the second substrate. The semiconductor device package assembly may include a thermally conductive material directly applied to the electronic memory module. The semiconductor device package assembly may include a heat spreader directly bonded to the thermally conductive material. The heat spreader may function to transfer heat from the first die and the electronic memory module through the heat spreader from the first side to the second side.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: April 19, 2016
    Assignee: Apple Inc.
    Inventors: Jun Zhai, Yizhang Yang, Mengzhi Pang
  • Patent number: 9263364
    Abstract: Various semiconductor chip thermal interface material methods and apparatus are disclosed. In one aspect, a method of establishing thermal contact between a first semiconductor chip and a heat spreader is provided. The method includes placing a thermal interface material layer containing a support structure on the first semiconductor chip. The heat spreader is positioned proximate the thermal interface material layer. The thermal interface material layer is reflowed to establish thermal contact with both the first semiconductor chip and the heat spreader.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: February 16, 2016
    Assignees: Advanced Micro Devices, Inc., ATI Technologies ULC
    Inventors: Maxat Touzelbaev, Gamal Refai-Ahmed, Yizhang Yang, Bryan Black