Patents by Inventor Cheng-Jer Yang

Cheng-Jer 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).

  • Patent number: 11929132
    Abstract: The present invention relates to a testing method, a testing system, and a testing apparatus for a semiconductor chip. The method includes: acquiring a target chip; obtaining an abnormal chip after a test of read and write functions is performed separately on a preset number of memory cells in an edge region of the target chip; recording location information of individual memory cells with abnormal read and write functions on the abnormal chip; judging whether an abnormality of read and write functions of the abnormal chip is a block abnormality based on the location information; wherein the abnormal chip refers to the target chip including the memory cell with abnormal read and write functions.
    Type: Grant
    Filed: June 16, 2021
    Date of Patent: March 12, 2024
    Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventor: Cheng-Jer Yang
  • Patent number: 11892502
    Abstract: An integrated circuit with a through-silicon via (TSV) fault-tolerant circuit, a TSV fault tolerance method are disclosed. The IC may include a plurality of operational TSVs, a spare TSV, a plurality of fault-tolerance control modules each coupled to one of the plurality of operational TSVs and the spare TSV, and a decoder coupled to the fault-tolerance control modules. The fault-tolerance control modules may be configured to deactivate an operational TSV that is determined to be defective and activate the spare TSV based on a positioning code for the defective operational TSV from the decoder. The IC may reduce the defect rate in the fabrication of TSV-based three-dimensional (3D) IC chips.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: February 6, 2024
    Assignee: Changxin Memory Technologies, Inc.
    Inventor: Cheng-Jer Yang
  • Patent number: 11886733
    Abstract: A circuit for testing a memory and a test method thereof are provided. According to the circuit for testing a memory provided by the present disclosure, a switch control circuit is connected between a discharge end and a negative bias signal end of a Sub Wordline Drive (SWD) and configured to input a trigger signal, so that potential of a Word Line (WL) signal end in a to-be-tested circuit meets a preset potential suspension range. Then, it is determined whether there is leakage behavior between the WL signal end and a Bit Line (BL) signal end in the to-be-tested circuit by detecting whether the present level state of a stored signal in the to-be-tested circuit is consistent with an initial level state. The to-be-tested circuit is a corresponding circuit in a single memory.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: January 30, 2024
    Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventor: Cheng-Jer Yang
  • Patent number: 11869576
    Abstract: A word line driving circuit includes a driving circuit and a control circuit. The control circuit includes a control sub-circuit, a first switching sub-circuit and a second switching sub-circuit. The first switching sub-circuit is provided with: a control terminal electrically connected with the control sub-circuit, a first terminal electrically connected with a first power supply voltage, and a second terminal electrically connected with a third input terminal of the driving circuit. The second switching sub-circuit is provided with: a control terminal electrically connected with the control sub-circuit, a first terminal electrically connected with a second power supply voltage, and a second terminal electrically connected with the third input terminal of the driving circuit. The second power supply voltage is greater than a ground voltage.
    Type: Grant
    Filed: February 19, 2022
    Date of Patent: January 9, 2024
    Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventor: Cheng-Jer Yang
  • Patent number: 11862269
    Abstract: A testing method for a packaged chip includes: acquiring a target chip; in the post-burn-in test process, testing a first data retention time of each memory unit on the target chip; comparing the first data retention time of each memory unit with a preset reference time; and, determining that the target chip is a qualified chip if the first data retention time of each memory unit is not less than the preset reference time. In the present application, by testing the first data retention time of each memory unit on the target chip in the post-burn-in test process, it is determined that the target chip is a qualified chip if the first data retention time of each memory unit is not less than the preset reference time.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: January 2, 2024
    Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventor: Cheng-Jer Yang
  • Patent number: 11830553
    Abstract: The application provides a Word Line (WL) drive circuit and a Dynamic Random Access Memory (DRAM). The WL drive circuit includes a first transistor, a second transistor, a third transistor and a fourth transistor. A gate of the first transistor is connected to a WL switch-off voltage, a drain is connected to the WL; a gate of the second transistor is connected to a first drive voltage of the WL, a drain is connected to the WL; and a source of the first transistor and a source of the second transistor are both connected to a negative bias through the third transistor.
    Type: Grant
    Filed: August 26, 2021
    Date of Patent: November 28, 2023
    Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventor: Cheng-Jer Yang
  • Publication number: 20230282617
    Abstract: The present disclosure provides a semiconductor structure, including a stacked structure, wherein the stacked structure includes a plurality of stacked semiconductor dies, and each of the semiconductor dies includes: a first base; a channel provided on the first base; and at least one first auxiliary through electrode and a plurality of connection through electrodes running through the first base, wherein the at least one first auxiliary through electrode is surrounded by the plurality of connection through electrodes, wherein connection through electrodes of adjacent ones of the semiconductor dies are connected through a first electrical connection structure to form a plurality of mutually isolated transmission paths, and each of the transmission paths is connected to at least one channel through at least one connection through electrode thereon.
    Type: Application
    Filed: June 20, 2022
    Publication date: September 7, 2023
    Inventor: CHENG-JER YANG
  • Patent number: 11715543
    Abstract: A memory test circuit apparatus and a method are provided. The method may include: compressing first test data output by a first storage array in a memory to generate first compressed data, compressing second test data output by a second storage array in the memory to generate second compressed data, compressing the first compressed data and the second compressed data to generate third compressed data, and outputting one of the first compressed data, the second compressed data and the third compressed data to determine a working condition of each of the first storage array and the second storage array. This method can provide not only a test result on a memory, but also a test result for individual storage array within the memory, which improves the efficiency of a circuit test.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: August 1, 2023
    Assignee: Changxin Memory Technologies, Inc.
    Inventor: Cheng-Jer Yang
  • Publication number: 20230187005
    Abstract: The present application relates to a testing method for a packaged chip, a testing system for a packaged chip, a computer device and a storage medium. The method includes following steps: acquiring a target chip; in the post-burn-in test process, testing a first data retention time of each memory unit on the target chip; comparing the first data retention time of each memory unit with a preset reference time; and, determining that the target chip is a qualified chip if the first data retention time of each memory unit is not less than the preset reference time. In the present application, by testing the first data retention time of each memory unit on the target chip in the post-burn-in test process, it is determined that the target chip is a qualified chip if the first data retention time of each memory unit is not less than the preset reference time, and subsequent testing will be performed continuously.
    Type: Application
    Filed: May 17, 2021
    Publication date: June 15, 2023
    Applicant: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventor: Cheng-Jer YANG
  • Patent number: 11614481
    Abstract: A TSV detecting circuit, TSV detecting methods, and an integrated circuit thereof are disclosed by the present disclosure. The TSV detecting circuit includes a first detecting module includes: a first comparison unit; a first input unit, for transmitting an input signal to a first input of the first comparison unit controlled by a first clock signal; a first switching unit for transmitting a signal of a first node to a second input of the first comparison unit controlled by a first detection control signal, the first node coupled to a first terminal of the TSV; and a second detecting module includes: a second input unit for transmitting the input signal to a second node controlled by a second clock signal; a second switching unit for transmitting a signal of the second node to a second terminal of the TSV controlled a second detection control signal.
    Type: Grant
    Filed: April 23, 2021
    Date of Patent: March 28, 2023
    Assignee: Changxin Memory Technologies, Inc.
    Inventors: You-Hsien Lin, Yi-Jun Lu, Cheng-Jer Yang
  • Publication number: 20230015241
    Abstract: Embodiments provide a memory structure, including: a capacitive structure, provided with an upper electrode layer; a conductive column, arranged on the upper electrode layer, and in contact with and electrically connected to the upper electrode layer; a metal layer, arranged on a side of the conductive column away from the upper electrode layer, the conductive column being in contact with a surface of the metal layer facing the upper electrode layer; and at least one buffer column, spaced apart from the conductive column, in contact with the surface of the metal layer facing the upper electrode layer, and extending in a direction from the metal layer to the upper electrode layer.
    Type: Application
    Filed: January 13, 2022
    Publication date: January 19, 2023
    Inventor: Cheng-Jer YANG
  • Publication number: 20220399068
    Abstract: The present invention relates to a testing method, a testing system, and a testing apparatus for a semiconductor chip. The method includes: acquiring a target chip; obtaining an abnormal chip after a test of read and write functions is performed separately on a preset number of memory cells in an edge region of the target chip; recording location information of individual memory cells with abnormal read and write functions on the abnormal chip; judging whether an abnormality of read and write functions of the abnormal chip is a block abnormality based on the location information; wherein the abnormal chip refers to the target chip including the memory cell with abnormal read and write functions.
    Type: Application
    Filed: June 16, 2021
    Publication date: December 15, 2022
    Inventor: Cheng-Jer YANG
  • Publication number: 20220383940
    Abstract: Embodiments of the present application provide a readout circuit layout structure, a readout circuit, and a memory layout structure. The readout circuit layout structure includes: a readout amplification module, a first processing module, and a second processing module arranged along a preset direction, wherein the readout amplification module is configured to read a voltage of a bit line, and the first processing module and the second processing module are at least configured to perform a noise cancellation on an output signal of the readout amplification module. The readout amplification module includes: a first NMOS region and a first PMOS region arranged close to the first processing module, and a second NMOS region and a second PMOS region arranged close to the second processing module, the first NMOS region, the first PMOS region, the second PMOS region, and the second NMOS region being arranged along the preset direction.
    Type: Application
    Filed: May 10, 2022
    Publication date: December 1, 2022
    Inventor: CHENG-JER YANG
  • Publication number: 20220310152
    Abstract: A word line driving circuit includes a driving circuit and a control circuit. The control circuit includes a control sub-circuit, a first switching sub-circuit and a second switching sub-circuit. The first switching sub-circuit is provided with: a control terminal electrically connected with the control sub-circuit, a first terminal electrically connected with a first power supply voltage, and a second terminal electrically connected with a third input terminal of the driving circuit. The second switching sub-circuit is provided with: a control terminal electrically connected with the control sub-circuit, a first terminal electrically connected with a second power supply voltage, and a second terminal electrically connected with the third input terminal of the driving circuit. The second power supply voltage is greater than a ground voltage.
    Type: Application
    Filed: February 19, 2022
    Publication date: September 29, 2022
    Applicant: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventor: Cheng-Jer YANG
  • Patent number: 11340294
    Abstract: Boundary test circuit, memory and boundary test method are provided. The boundary test circuit may include a plurality of serially-connected wrapper boundary registers (WBRs) and a plurality of toggle circuits (TCs). Each WBR may include a first I/O for receiving an initial test signal and a second I/O for transmitting the initial test signal to the WBR at a succeeding stage. Each TC may include an input for receiving the initial test signal stored in a corresponding WBR, a control I/O for receiving a toggle signal, and an output for transmitting a real-time test signal to the integrated circuit. The toggle signal may be configured to control phase switching of the real-time test signal, and, depending on the toggle signal, the real-time test signal may have a phase identical or inverse to a phase of the initial test signal. This method improves the efficiency and flexibility of the boundary test.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: May 24, 2022
    Assignee: Changxin Memory Technologies, Inc.
    Inventor: Cheng-Jer Yang
  • Publication number: 20220130460
    Abstract: The application provides a Word Line (WL) drive circuit and a Dynamic Random Access Memory (DRAM). The WL drive circuit includes a first transistor, a second transistor, a third transistor and a fourth transistor. A gate of the first transistor is connected to a WL switch-off voltage, a drain is connected to the WL; a gate of the second transistor is connected to a first drive voltage of the WL, a drain is connected to the WL; and a source of the first transistor and a source of the second transistor are both connected to a negative bias through the third transistor.
    Type: Application
    Filed: August 26, 2021
    Publication date: April 28, 2022
    Inventor: Cheng-Jer YANG
  • Publication number: 20220100410
    Abstract: A circuit for testing a memory and a test method thereof are provided. According to the circuit for testing a memory provided by the present disclosure, a switch control circuit is connected between a discharge end and a negative bias signal end of a Sub Wordline Drive (SWD) and configured to input a trigger signal, so that potential of a Word Line (WL) signal end in a to-be-tested circuit meets a preset potential suspension range. Then, it is determined whether there is leakage behavior between the WL signal end and a Bit Line (BL) signal end in the to-be-tested circuit by detecting whether the present level state of a stored signal in the to-be-tested circuit is consistent with an initial level state. The to-be-tested circuit is a corresponding circuit in a single memory.
    Type: Application
    Filed: October 26, 2021
    Publication date: March 31, 2022
    Inventor: Cheng-Jer Yang
  • Publication number: 20220034939
    Abstract: A method for judging abnormality of a probe card includes: a unit failure rate of chips at the same test position in each measurement unit is obtained, and whether the unit failure rate of the chips at the same test position respectively meets the first abnormality condition is judged; when the unit failure rate of the chips at the same test position of each measurement unit meets a first abnormality condition, whether a test sequence for the measurement units meeting the first abnormality condition meets a second abnormality condition is judged; and when the test sequence for the measurement units meeting the first abnormality condition meets the second abnormality condition, it is determined that the probe card is abnormal.
    Type: Application
    Filed: August 23, 2021
    Publication date: February 3, 2022
    Applicant: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventor: CHENG-JER YANG
  • Publication number: 20210239751
    Abstract: A TSV detecting circuit, TSV detecting methods, and an integrated circuit thereof are disclosed by the present disclosure. The TSV detecting circuit includes a first detecting module includes: a first comparison unit; a first input unit, for transmitting an input signal to a first input of the first comparison unit controlled by a first clock signal; a first switching unit for transmitting a signal of a first node to a second input of the first comparison unit controlled by a first detection control signal, the first node coupled to a first terminal of the TSV; and a second detecting module includes: a second input unit for transmitting the input signal to a second node controlled by a second clock signal; a second switching unit for transmitting a signal of the second node to a second terminal of the TSV controlled a second detection control signal.
    Type: Application
    Filed: April 23, 2021
    Publication date: August 5, 2021
    Inventors: You-Hsien LIN, Yi-Jun LU, Cheng-Jer YANG
  • Publication number: 20210156913
    Abstract: Boundary test circuit, memory and boundary test method are provided. The boundary test circuit may include a plurality of serially-connected wrapper boundary registers (WBRs) and a plurality of toggle circuits (TCs). Each WBR may include a first I/O for receiving an initial test signal and a second I/O for transmitting the initial test signal to the WBR at a succeeding stage. Each TC may include an input for receiving the initial test signal stored in a corresponding WBR, a control I/O for receiving a toggle signal, and an output for transmitting a real-time test signal to the integrated circuit. The toggle signal may be configured to control phase switching of the real-time test signal, and, depending on the toggle signal, the real-time test signal may have a phase identical or inverse to a phase of the initial test signal. This method improves the efficiency and flexibility of the boundary test.
    Type: Application
    Filed: February 2, 2021
    Publication date: May 27, 2021
    Inventor: Cheng-Jer YANG