Patents by Inventor Lien-Sheng Yang

Lien-Sheng 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: 11378620
    Abstract: A method for detecting an abnormal die includes providing a wafer, determining the surrounding dies in accordance with a position of a target die on the wafer, calculating a difference between a value of an electrical characteristic of each of the surrounding dies and a value of an electrical characteristic of the target die to obtain the electrical characteristic deviations, ranking the absolute values of the electrical characteristic deviations to generate a ranking result, and determining the characteristic-related dies from the surrounding dies in accordance with the ranking result, determining a target-related area in accordance with the position of the target die, determining the target-related die from the characteristic-related dies in accordance with the target-related area and determining whether the target die is qualified in accordance with the target-related die.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: July 5, 2022
    Assignee: INTEGRATED SILICON SOLUTION INC.
    Inventors: Shou-Kang Fan, Lien-Sheng Yang
  • Patent number: 11195592
    Abstract: A memory inspecting method and a memory inspecting system are proposed. The memory inspecting system includes a testing machine and a computer system. The memory inspecting method includes: performing a first data retention time test on a plurality of memory chips to obtain a plurality of first qualified memory chips; performing a second data retention time test on the first qualified memory chips to obtain a plurality of second qualified memory chips; performing a third data retention time test on the second qualified memory chips to obtain a plurality of third qualified memory chips. Performing a statistical analysis step on the third qualified memory chips according to a first data retention time, a second data retention time and a third data retention time of each of the third qualified memory chips is for obtaining at least one final qualified memory chip.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: December 7, 2021
    Assignee: INTEGRATED SILICON SOLUTION INC.
    Inventors: PaiLu Dennis Wang, Lien-Sheng Yang
  • Publication number: 20210349147
    Abstract: A method for detecting an abnormal die includes providing a wafer, determining the surrounding dies in accordance with a position of a target die on the wafer, calculating a difference between a value of an electrical characteristic of each of the surrounding dies and a value of an electrical characteristic of the target die to obtain the electrical characteristic deviations, ranking the absolute values of the electrical characteristic deviations to generate a ranking result, and determining the characteristic-related dies from the surrounding dies in accordance with the ranking result, determining a target-related area in accordance with the position of the target die, determining the target-related die from the characteristic-related dies in accordance with the target-related area and determining whether the target die is qualified in accordance with the target-related die.
    Type: Application
    Filed: July 31, 2020
    Publication date: November 11, 2021
    Inventors: Shou-Kang FAN, Lien-Sheng YANG
  • Publication number: 20210257042
    Abstract: A memory inspecting method and a memory inspecting system are proposed. The memory inspecting system includes a testing machine and a computer system. The memory inspecting method includes: performing a first data retention time test on a plurality of memory chips to obtain a plurality of first qualified memory chips; performing a second data retention time test on the first qualified memory chips to obtain a plurality of second qualified memory chips; performing a third data retention time test on the second qualified memory chips to obtain a plurality of third qualified memory chips. Performing a statistical analysis step on the third qualified memory chips according to a first data retention time, a second data retention time and a third data retention time of each of the third qualified memory chips is for obtaining at least one final qualified memory chip.
    Type: Application
    Filed: September 2, 2020
    Publication date: August 19, 2021
    Inventors: PaiLu Dennis WANG, Lien-Sheng YANG
  • Patent number: 9153344
    Abstract: A device for detecting defective memory includes a first global word line; a second global word line; a global word-line front end, connected to the first global word line; a global word-line driver, connected to the global word-line front end and driving the first global word line; a local word-line driver, connected to the first global word line and driving a local word line; and a voltage-controlled transistor, including a first terminal connected to the first global word line, a second terminal connected to a connection line between the global word-line front end and the global word-line driver, and a third terminal outputting a test current.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: October 6, 2015
    Assignee: INTEGRATED CIRCUIT SOLUTION INC.
    Inventors: Lien-Sheng Yang, Hung-Wen Chang
  • Patent number: 8773931
    Abstract: By inputting voltages to global word lines of a memory, and by detecting currents of corresponding global word lines, a relation function between the currents and the voltages can be generated, and connection defects on the global word lines can be determined according to various types of deviation of a relation curve corresponding to the relation function between the currents and voltages.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: July 8, 2014
    Assignee: Etron Technology, Inc.
    Inventors: Min-Chih Chang, Shih-Hsing Wang, Te-Yi Yu, Lien-Sheng Yang
  • Patent number: 8543877
    Abstract: Utilize a pattern generator to write a predetermined logic voltage to each memory cell of a memory chip. Read a predetermined logic voltage stored in the memory cell. Compare the predetermined logic voltage stored in the memory cell with the predetermined logic voltage to determine if the memory cell is a good memory cell or not and store a determination result corresponding to the memory cell in a data latch of the memory chip. And determine if the memory chip is a good memory chip or not according to determination results of all memory cells of the memory chip stored in the data latch of the memory chip.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: September 24, 2013
    Assignee: Etron Technology, Inc.
    Inventors: Wei-Ju Chen, Shi-Huei Liu, Lien-Sheng Yang
  • Publication number: 20130010558
    Abstract: By inputting voltages to global word lines of a memory, and by detecting currents of corresponding global word lines, a relation function between the currents and the voltages can be generated, and connection defects on the global word lines can be determined according to various types of deviation of a relation curve corresponding to the relation function between the currents and voltages.
    Type: Application
    Filed: June 18, 2012
    Publication date: January 10, 2013
    Inventors: Min-Chih Chang, Shih-Hsing Wang, Te-Yi Yu, Lien-Sheng Yang
  • Publication number: 20120254470
    Abstract: A connector applied to a portable device includes a wireless module, a connection module, at least one connection socket, a controller, and a memory. The wireless module is used for establishing a wireless connection between the portable device and the connector. The connection module is used for communicating with an external device. The at least one connection socket is used for connecting the connection module with the external device. The controller is coupled between the wireless module and the connection module for transmitting data between the wireless module and the connection module and executing commands to control the wireless module and the connection module. The memory is used for storing the commands required for the controller and is used as a data register to boost a data transmission rate between the portable device and the external device.
    Type: Application
    Filed: March 16, 2012
    Publication date: October 4, 2012
    Inventors: Ming-Hong Kuo, Li-Fu Huang, Lien-Sheng Yang
  • Publication number: 20120131398
    Abstract: Utilize a pattern generator to write a predetermined logic voltage to each memory cell of a memory chip. Read a predetermined logic voltage stored in the memory cell. Compare the predetermined logic voltage stored in the memory cell with the predetermined logic voltage to determine if the memory cell is a good memory cell or not and store a determination result corresponding to the memory cell in a data latch of the memory chip. And determine if the memory chip is a good memory chip or not according to determination results of all memory cells of the memory chip stored in the data latch of the memory chip.
    Type: Application
    Filed: November 7, 2011
    Publication date: May 24, 2012
    Inventors: Wei-Ju Chen, Shi-Huei Liu, Lien-Sheng Yang
  • Patent number: 7965577
    Abstract: Method for detecting word line defect includes activating a first word line for reading a first data pre-stored in the memory cell, suspending the first word line for a predetermined period and then writing a second data complementary to the first data into the memory cell, activating again the first word line for reading a third data from the memory cell, and comparing the second and the third data for determining if an electrical coupling path exists between the first word line and a second word line.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: June 21, 2011
    Assignee: Etron Technology, Inc.
    Inventors: Wei-Jen Chen, Ho-Yin Chen, Lien-Sheng Yang, Shu-Jen Wu
  • Publication number: 20100329052
    Abstract: Method for detecting word line defect includes activating a first word line for reading a first data pre-stored in the memory cell, suspending the first word line for a predetermined period and then writing a second data complementary to the first data into the memory cell, activating again the first word line for reading a third data from the memory cell, and comparing the second and the third data for determining if an electrical coupling path exists between the first word line and a second word line.
    Type: Application
    Filed: August 18, 2009
    Publication date: December 30, 2010
    Inventors: Wei-Jen Chen, Ho-Yin Chen, Lien-Sheng Yang, Shu-Jen Wu
  • Patent number: 7623388
    Abstract: A method detects if a word line of a memory array is broken. The method includes writing a first datum to a memory cell when coupling a corresponding word line to a voltage source, writing a second datum different from the first datum to the memory cell when the coupling between the corresponding word line and the voltage source is decoupled, reading the stored data of the memory cell, and determining if the word line is broken according to the read data, the first datum, and the second datum.
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: November 24, 2009
    Assignee: Etron Technology, Inc.
    Inventors: Tzu-Hao Chen, Jen-Shou Hsu, Lien-Sheng Yang, Yin-Ming Lan
  • Publication number: 20090175097
    Abstract: A method detects if a word line of a memory array is broken. The method includes writing a first datum to a memory cell when coupling a corresponding word line to a voltage source, writing a second datum different from the first datum to the memory cell when the coupling between the corresponding word line and the voltage source is decoupled, reading the stored data of the memory cell, and determining if the word line is broken according to the read data, the first datum, and the second datum.
    Type: Application
    Filed: May 6, 2008
    Publication date: July 9, 2009
    Inventors: Tzu-Hao Chen, Jen-Shou Hsu, Lien-Sheng Yang, Yin-Ming Lan