Patents by Inventor Shibing QIAN

Shibing QIAN 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: 11867745
    Abstract: Provided are a parasitic capacitance detection method, a memory, and a readable storage medium, relating to the field of semiconductor technologies. The detection method comprises: providing a plurality of semiconductor devices for testing, all the semiconductor devices being the same in a number of sources, a number of drains, a number of active layers, a number of gates, a number of wires and a cross-sectional area of the wire, all the semiconductor devices being different in a length of the wire therein; determining a capacitance between the wire per unit length and the gate in the semiconductor device, the capacitance between the wire per unit length and the gate being considered as a parasitic capacitance per unit length; determining a corresponding wire length of a to-be-detected semiconductor device; and determining a parasitic capacitance of the to-be-detected semiconductor device.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: January 9, 2024
    Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventor: Shibing Qian
  • Patent number: 11852542
    Abstract: Methods for measuring a temperature of a wafer chuck and calibrating temperature and a temperature measuring system are provided. The measuring method includes: placing a test wafer on a wafer chuck, where a plurality of semiconductor devices having electrical parameters varying as a function of temperature are formed on the test wafer; making the temperature of the wafer chuck reach set temperatures; measuring the semiconductor devices respectively to obtain electrical parameters corresponding to the semiconductor devices; obtaining actual temperatures of the semiconductor devices according to the electrical parameters and variations, of the electrical parameters, as the function of temperature; and obtaining an actual temperature distribution of the wafer chuck according to the actual temperatures of the semiconductor devices.
    Type: Grant
    Filed: July 15, 2021
    Date of Patent: December 26, 2023
    Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.
    Inventors: Shibing Qian, ShihChieh Lin
  • Publication number: 20230061462
    Abstract: Embodiments of the present application provide a semiconductor structure and a method for manufacturing the same. The semiconductor structure includes: a substrate, with word lines arranged at intervals in the substrate, and trenches between adjacent word lines; a bit line contact layer, wherein the bottom surface of the bit line contact layer is in contact with the bottom surface of the trench, and the bit line contact layer has a non-planar contact portion in the direction away from the bottom surface of the trench; the conductive layer is in contact with the non-planar contact portion of the bit line contact layer. The embodiments of the present application are beneficial in reducing the resistance of the bit line itself including the bit line contact layer and the conductive layer, thereby helping to improve the electrical performance of the semiconductor structure.
    Type: Application
    Filed: June 1, 2022
    Publication date: March 2, 2023
    Inventor: Shibing Qian
  • Publication number: 20220120806
    Abstract: Provided are a parasitic capacitance detection method, a memory, and a readable storage medium, relating to the field of semiconductor technologies. The detection method comprises: providing a plurality of semiconductor devices for testing, all the semiconductor devices being the same in a number of sources, a number of drains, a number of active layers, a number of gates, a number of wires and a cross-sectional area of the wire, all the semiconductor devices being different in a length of the wire therein; determining a capacitance between the wire per unit length and the gate in the semiconductor device, the capacitance between the wire per unit length and the gate being considered as a parasitic capacitance per unit length; determining a corresponding wire length of a to-be-detected semiconductor device; and determining a parasitic capacitance of the to-be-detected semiconductor device.
    Type: Application
    Filed: November 22, 2021
    Publication date: April 21, 2022
    Inventor: Shibing Qian
  • Publication number: 20210341342
    Abstract: Methods for measuring a temperature of a wafer chuck and calibrating temperature and a temperature measuring system are provided. The measuring method includes: placing a test wafer on a wafer chuck, where a plurality of semiconductor devices having electrical parameters varying as a function of temperature are formed on the test wafer; making the temperature of the wafer chuck reach set temperatures; measuring the semiconductor devices respectively to obtain electrical parameters corresponding to the semiconductor devices; obtaining actual temperatures of the semiconductor devices according to the electrical parameters and variations, of the electrical parameters, as the function of temperature; and obtaining an actual temperature distribution of the wafer chuck according to the actual temperatures of the semiconductor devices.
    Type: Application
    Filed: July 15, 2021
    Publication date: November 4, 2021
    Inventors: Shibing QIAN, ShihChieh LIN
  • Patent number: 11011534
    Abstract: A multi-level cell thin-film transistor memory and a method of fabricating the same, a structure of which memory comprises sequentially from down to top: a gate electrode, a charge blocking layer, a charge trapping layer, a charge tunneling layer, an active region, and source and drain electrodes; wherein the charge tunneling layer fully encloses the charge trapping layer so as to completely isolate the charge trapping layer from the ambience, which prevents change of physical properties and chemical compositions of the charge trapping layer during the annealing treatment, reduces loss of charges stored in the charge trapping layer, and enhances data retention property and device performance stability; a metal oxide semiconductor thin film is utilized as the charge trapping layer of the memory, which implements multi-level cell storage and improves storage density.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: May 18, 2021
    Assignee: Fudan University
    Inventors: Shijin Ding, Shibing Qian, Wenjun Liu, Wei Zhang
  • Publication number: 20200119033
    Abstract: A multi-level cell thin-film transistor memory and a method of fabricating the same, a structure of which memory comprises sequentially from down to top: a gate electrode, a charge blocking layer, a charge trapping layer, a charge tunneling layer, an active region, and source and drain electrodes; wherein- the charge tunneling layer fully encloses the charge trapping layer so as to completely isolate the charge trapping layer from the ambience, which prevents change of physical properties and chemical compositions of the charge trapping layer during the annealing treatment, reduces loss of charges stored in the charge trapping layer, and enhances data retention property and device performance stability; a metal oxide semiconductor thin film is utilized as the charge trapping layer of the memory, which implements multi-level cell storage and improves storage density
    Type: Application
    Filed: December 29, 2017
    Publication date: April 16, 2020
    Inventors: Shijin DING, Shibing QIAN, Wenjun LIU, Wei ZHANG