Patents by Inventor Wei Qin

Wei Qin 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: 11597031
    Abstract: A method of operating a wire bonding machine is provided. The method includes: (a) operating a wire bonding machine during at least one of (i) an automatic wire bonding operation and (ii) a dry cycle wire bonding operation, wherein a bonding force is applied during the operation of the wire bonding machine; and (b) monitoring an accuracy of the bonding force of the wire bonding machine during the at least one of (i) an automatic wire bonding operation and (ii) a dry cycle wire bonding operation.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: March 7, 2023
    Assignee: Kulicke and Soffa Industries, Inc.
    Inventors: Hui Xu, Wei Qin, D. Matthew Odhner
  • Publication number: 20230053452
    Abstract: Staple fibers and filament yarns formed from cellulose esters, such as cellulose acetate, are described herein, along with methods of making the fibers and their use in nonwoven fabrics and articles. The filament yarns and fibers described herein may be coated with at least one finish and, in some cases, may be coated with two or more finishes selected to enhance the properties of the fibers. Staple fibers as described herein may be used to produce nonwoven webs that are strong, soft, absorbent, and biodegradable, and may be used in wet or dry nonwoven articles for a variety personal care, medical, industrial, and commercial applications.
    Type: Application
    Filed: July 18, 2022
    Publication date: February 23, 2023
    Applicant: Eastman Chemical Company
    Inventors: Jeremy Kenneth Steach, Scott Gregory Gaynor, Jason Michael Spruell, Mohammad Abouelreesh Hassan, Guo Wei Qin, Yancey Appling, Syed Ali Shah, James M. Posa, Koushik Ghosh, Mounir Izallalen
  • Publication number: 20230044394
    Abstract: Disclosed is a wireless detection device for quickly positioning a throw-fill stone falling depth and long-term settlement in blasting silt-squeezing construction, including a gravity ball and a signal receiving, processing and controlling system. The gravity ball is internally provided with test mechanisms, signal collecting and transmitting apparatuses and batteries. Also disclosed is a wireless detection method implemented using the above wireless detection device. The device and the method can detect the throw-fill stone falling depth and distribution situation in a blasting silt-squeezing construction process in real time, so that the effect evaluation and quality control of blasting silt-squeezing can be monitored in real time, the situation that the falling of throw-fill stones is incomplete can be acquired in time, monitoring data support can be provided for corresponding processing measures, and long-term settlement and other monitoring can be carried out.
    Type: Application
    Filed: October 26, 2021
    Publication date: February 9, 2023
    Inventors: JUN WANG, WEI QIN, LIUJUN ZHANG, JUNFENG NI, ZIYANG GAO, YONGGANG HU, CHAOHAO PAN, JINRONG ZHANG, XUDONG DONG
  • Publication number: 20230039460
    Abstract: A method of adjusting a clamping of a semiconductor element against a support structure on a wire bonding machine is provided. The method includes: (a) detecting an indicia of floating of the semiconductor element with respect to the support structure at a plurality of locations of the semiconductor element; and (b) adjusting the clamping of the semiconductor element against the support structure based on the results of step (a).
    Type: Application
    Filed: October 24, 2022
    Publication date: February 9, 2023
    Inventors: Hui Xu, JeongHo Yang, Wei Qin, Ziauddin Ahmad
  • Patent number: 11563197
    Abstract: The present application describes a display panel having a plurality of subpixels. Each of the plurality of subpixels has a light blocking region and a light transmissive region surrounding the light blocking region. Each of the plurality of subpixels in the light blocking region includes a first base substrate and a second base substrate facing each other; a first light emitting element and a first reflective block on a side of the first base substrate proximal to the second base substrate; and a second reflective block on a side of the second base substrate proximal to the first base substrate. The first reflective block and the second reflective block are configured to reflect light emitted from the first light emitting element to the light transmissive region thereby displaying an image.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: January 24, 2023
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Xiaolong Li, Fangzhen Zhang, Wei Qin, Kuanjun Peng
  • Publication number: 20230010444
    Abstract: A display substrate and a display device are disclosed. The display substrate includes a light-transmitting region, wherein the light-transmitting region includes a plurality of rows of effective sub-pixel sets and a plurality of main spacers, each row of the plurality of rows of effective sub-pixel sets includes a plurality of effective sub-pixel sets, each of the plurality of effective sub-pixel sets includes a plurality of effective sub-pixels, any two adjacent effective sub-pixel sets in a same row are spaced apart from each other by one main spacer, the main spacer includes at least two sub-spacers arranged along a column direction. At least two sub-spacers arranged along a row direction have different widths; and/or at least two sub-spacers of a same main sub-spacer have different widths.
    Type: Application
    Filed: August 19, 2021
    Publication date: January 12, 2023
    Inventors: Zhiqiang XU, Wei QIN, Chunfang ZHANG, Weixing LIU, Tieshi WANG, Xuefei SUN
  • Publication number: 20220399158
    Abstract: The present invention provides a magnetic-inductance component, and relates to the field of magnetic circuit theory and application, and in particular, to the design of magnetic circuit components. The magnetic-inductance component is a multi-turn short-circuit coil wound around a magnetic circuit. A magnetic-inductance value of the magnetic-inductance component is adjusted by selecting metal conductors with different numbers of turns, materials, cross-sectional areas, and lengths to change an amplitude and a phase of a magnetic flux of the magnetic circuit. The present invention purposely changes the operating state and operating trajectory of a vector in the magnetic circuit by adding the magnetic-inductance component to the magnetic circuit or removing the magnetic-inductance component from the magnetic circuit, to make a state of a magnetic flux vector in the magnetic circuit to be consistent with a target magnetic flux vector state.
    Type: Application
    Filed: January 22, 2021
    Publication date: December 15, 2022
    Inventors: Ming CHENG, Wei QIN, Zheng WANG, Xinkai ZHU
  • Patent number: 11515285
    Abstract: A method of adjusting a clamping of a semiconductor element against a support structure on a wire bonding machine is provided. The method includes: (a) detecting an indicia of floating of the semiconductor element with respect to the support structure at a plurality of locations of the semiconductor element; and (b) adjusting the clamping of the semiconductor element against the support structure based on the results of step (a).
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: November 29, 2022
    Assignee: Kulicke and Soffa Industries, Inc.
    Inventors: Hui Xu, JeongHo Yang, Wei Qin, Ziauddin Ahmad
  • Publication number: 20220373621
    Abstract: Disclosed is a power calculation method of a magnetic circuit. In view of the power problem of a magnetic circuit and the phase problem of a magnetomotive force (MMF) and a magnetic flux in the magnetic circuit, the present disclosure draws a magnetic circuit vector diagram based on an equivalent magnetic circuit vector model, and provides a method for calculating virtual magnetic active power, virtual magnetic reactive power, and virtual magnetic complex power of the magnetic circuit by analyzing the MMF, the magnetic flux, the reluctance, and the magnetic reactance in the magnetic circuit by using the magnetic circuit vector diagram.
    Type: Application
    Filed: January 22, 2021
    Publication date: November 24, 2022
    Inventors: Ming CHENG, Zheng WANG, Xinkai ZHU, Wei QIN
  • Publication number: 20220366106
    Abstract: The present invention discloses a calculation method of eddy current loss in magnetic materials based on magnetic-inductance. The present invention proposes a vector model of a magnetic circuit, an eddy current reaction is equivalent to a magnetic-inductance component in the magnetic circuit, and the eddy current loss can be fast calculated by the vector model of the magnetic circuit. When the frequency is high, the eddy current loss dominates an iron loss and can be estimated as an entire iron loss. The present invention proposes the vector model of the magnetic circuit based on which the calculation method of eddy current loss in magnetic materials is proposed as well. Through the proposed method the eddy current loss in magnetic materials can be directly calculated by using the magnetic-inductance and the magnetic flux in the magnetic circuit, which can provide guidance for design and performance evaluation of high-frequency electrical equipment from a brand new viewpoint.
    Type: Application
    Filed: January 22, 2021
    Publication date: November 17, 2022
    Inventors: Ming CHENG, Zheng WANG, Wei QIN, Xinkai ZHU
  • Patent number: 11501684
    Abstract: Disclosed are a method for driving a silicon-based driving back plate and a display apparatus. The method includes: acquiring a watch position of a user on the silicon-based driving back plate within one frame time; determining a watch region of the user on the silicon-based driving back plate according to the watch position; and controlling a sum of an analog modulation bit for analog scanning charging and a digital modulation bit for digital scanning charging performed on each row of pixels in the watch region to be greater than a sum of an analog modulation bit for analog scanning charging and a digital modulation bit for digital scanning charging performed on each row of pixels in a non-watch region.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: November 15, 2022
    Assignee: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Shengnan Li, Wei Qin, Tieshi Wang, Xiaolong Li, Weixing Liu, Kuanjun Peng
  • Patent number: 11495570
    Abstract: A method of forming a wire loop in connection with a semiconductor package is provided. The method includes the steps of: (1) providing package data related to the semiconductor package to a wire bonding machine; (2) providing at least one looping control value related to a desired wire loop to the wire bonding machine, the at least one looping control value including at least a loop height value related to the desired wire loop; (3) deriving looping parameters, using an algorithm, for forming the desired wire loop; (4) forming a first wire loop on the wire bonding machine using the looping parameters derived in step (3); (5) measuring actual looping control values of the first wire loop formed in step (4) corresponding to the at least one looping control value; and (6) comparing the actual looping control values measured in step (5) to the at least one looping control value provided in step (2).
    Type: Grant
    Filed: February 3, 2022
    Date of Patent: November 8, 2022
    Assignee: Kulicke and Soffa Industries, Inc.
    Inventors: Ivy Wei Qin, Ray L. Cathcart, Cuong Huynh, Deepak Sood, Paul W. Sucro, Joseph O. DeAngelo
  • Publication number: 20220351681
    Abstract: A pixel circuit, including: an input sub-circuit, a driving control sub-circuit, a light emission control sub-circuit, a driving sub-circuit, a first light-emitting element and a second light-emitting element, wherein the driving control sub-circuit comprises a capacitor; the input sub-circuit is used for providing a signal of a data signal end to a first node; the driving control sub-circuit adjusts the voltages of the first node, a second node and a third node by means of controlling the voltages at two ends of the capacitor; the light emission control sub-circuit is used for providing a signal of a first power supply signal end to the second node under the signal control of a light emission control signal end; and the driving sub-circuit is used for connecting or disconnecting the connection between the second node and the third node under the signal control of the first node.
    Type: Application
    Filed: May 21, 2021
    Publication date: November 3, 2022
    Inventors: Weixing LIU, Kai GUO, Tieshi WANG, Wei QIN
  • Publication number: 20220340043
    Abstract: Embodiments are a multi-battery management apparatus and an unmanned aerial vehicle. The apparatus includes at least two batteries, a mutual-charging switch, a voltage conversion module and a microprocessor; each of the batteries is connected to the microprocessor, and each of the batteries is also connected to the voltage conversion module by the mutual-charging switch; and the microprocessor is also respectively connected to a control terminal of the mutual-charging switch and the voltage conversion module. In the present invention, when an abnormal battery of which an electric quantity does not meet the storage condition occurs, a corresponding mutual-charging switch is controlled to be switch on, so that a battery with a higher electric quantity in the abnormal batteries charges a battery with a lower electric quantity.
    Type: Application
    Filed: May 11, 2022
    Publication date: October 27, 2022
    Inventor: Wei QIN
  • Publication number: 20220342014
    Abstract: The present invention discloses a measurement method for a B-H curve of magnetic material based on a magnetic-inductance principle, and relates to the field of electric engineering. A measurement apparatus includes an Epstein frame, an alternating power supply, a power analyzer, and an oscilloscope. The core content of the present invention is to perform electromagnetic coupling modeling on an Epstein frame based on a vector model of a magnetic circuit, where an iron core of the Epstein frame is formed by laminating a silicon steel sheet to be measured, and an excitation coil and a detection coil with the same turns number are wound around the iron core. The measurement process is to first obtain a reference B-H curve that only considers a nonlinear reluctance of the iron core, and then to derive a B-H curve considering an eddy current effect in a magnetic field at any frequency from the reference B-H curve.
    Type: Application
    Filed: January 22, 2021
    Publication date: October 27, 2022
    Inventors: Ming CHENG, Xinkai ZHU, Wei QIN, Zheng WANG
  • Publication number: 20220336838
    Abstract: The present disclosure discloses a stable and high-capacity neutral aqueous redox flow lithium battery based on redox-targeting reaction and belongs to the technical field of flow lithium batteries. The present disclosure solves the technical problem that an existing flow battery can only work at low current density. The flow lithium battery of the present disclosure includes a positive electrode storage tank and a negative electrode storage tank; the positive electrode storage tank is filled with a positive electrolyte; and the negative electrode storage tank is filled with a negative electrolyte. The flow lithium battery is characterized in that the positive electrolyte includes a salt containing [Fe(CN)6]4? and/or [Fe(CN)6]3?, and the positive electrode storage tank is further filled with LFP particles and/or FP particles. The flow lithium battery of the present disclosure has wide application prospects in the field of large-scale energy storage.
    Type: Application
    Filed: June 28, 2022
    Publication date: October 20, 2022
    Inventors: Xiaohong Wu, Songtao Lu, Wei Qin, Xin Jia, Yuan Yao, Yang Li
  • Patent number: 11474633
    Abstract: The embodiments of the present application disclose a touch control display panel and a manufacturing method thereof, a touch control display screen and a spliced screen. The touch control display panel comprises: A substrate; A driving circuit layer, wherein the driving circuit layer comprises a driving line and a data line, a touch control row electrode and a touch control column electrode, the touch control row electrode is connected to at least one row auxiliary electrode via at least one first via hole, and each row of touch control row electrodes are connected to each other in series via the row auxiliary electrode; the touch control column electrode is connected to at least one column auxiliary electrode through at least one second via, and each column touch control column electrode is connected to each other in series through the column auxiliary electrode.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: October 18, 2022
    Assignee: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Lubin Shi, Fuqiang Li, Fangzhen Zhang, Wei Qin
  • Publication number: 20220270937
    Abstract: A method of determining a shear strength of a bonded free air ball on a wire bonding machine is provided. The method includes the steps of: (a) providing a free air ball at a working end of a wire bonding tool; (b) bonding the free air ball to a bonding location of a workpiece; (c) moving the wire bonding tool, while in contact with the bonded free air ball, in a direction along the bonding location; (d) monitoring wire bonding process signals during step (c); and (e) determining a shear strength using the wire bonding process signals monitored in step (d).
    Type: Application
    Filed: February 7, 2022
    Publication date: August 25, 2022
    Inventors: Gary S. Gillotti, Racheli Herskowits, Wei Qin
  • Publication number: 20220262310
    Abstract: A display substrate and a display device. The display substrate includes a pixel circuit in which the driving circuit controls a driving current for driving the light emitter element to emit light; the first light emission control circuit applies a first voltage to a first terminal of the driving circuit in response to a first light emission control signal; the second light emission control circuit applies the driving current to the light emitter element in response to a second light emission control signal; the first reset circuit applies a first reset voltage to the control terminal of the driving circuit in response to a first reset signal; the first reset signal and the first light emission control signal are simultaneously turn-on signals during a period; the first light emission control line and the second light emission control line extend along a first direction and are arranged in a second direction.
    Type: Application
    Filed: April 29, 2022
    Publication date: August 18, 2022
    Inventors: Xueling GAO, Kuanjun Peng, Chengchung Yang, Xiangxiang Zou, Wei Qin
  • Patent number: D980159
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: March 7, 2023
    Assignee: Shanghai Runhood Power Co. Ltd.
    Inventors: Jingfeng Tian, Wei Qin