Patents by Inventor Bing Ji

Bing Ji 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: 20250140526
    Abstract: A method for reducing reflected radio frequency (RF) power is described. The method includes receiving a voltage signal from an output of a match. The method further includes dividing the voltage signal into a plurality of bins and identifying a bin from the plurality of bins that includes a zero crossing. The bin is associated with a frequency of a high frequency (HF) signal. The method also includes applying a fixed multiplier to the frequency of the HF signal to generate a plurality of offsets. The method includes operating an HF RF generator according to the plurality of offsets during a time period in which the voltage signal is positive or negative.
    Type: Application
    Filed: December 21, 2022
    Publication date: May 1, 2025
    Inventors: Ranadeep Bhowmick, Alexei Marakhtanov, Felix Leib Kozakevich, John Holland, Bing Ji
  • Patent number: 12266505
    Abstract: A method for achieving uniformity in an etch rate is described. The method includes receiving a voltage signal from an output of a match, and determining a positive crossing and a negative crossing of the voltage signal for each cycle of the voltage signal. The negative crossing of each cycle is consecutive to the positive crossing of the cycle. The method further includes dividing a time interval of each cycle of the voltage signal into a plurality of bins. For one or more of the plurality of bins associated with the positive crossing and one or more of the plurality of bins associated with the negative crossing, the method includes adjusting a frequency of a radio frequency generator to achieve the uniformity in the etch rate.
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: April 1, 2025
    Assignee: Lam Research Corporation
    Inventors: Alexei Marakhtanov, Felix Leib Kozakevich, Ranadeep Bhowmick, Bing Ji, John Holland
  • Publication number: 20250062102
    Abstract: An impedance match housing is described. The impedance match housing includes an impedance matching circuit having an input that is coupled to a radio frequency (RF) generator. The impedance matching circuit has an output that is coupled to a first RF strap. The impedance match housing includes a uniformity control circuit coupled in parallel to a portion of the first RF strap to modify uniformity in a processing rate of a substrate when the substrate is processed within a plasma chamber.
    Type: Application
    Filed: November 4, 2024
    Publication date: February 20, 2025
    Inventors: Alexei M. Marakhtanov, Felix Leib Kozakevich, Bing Ji, John P. Holland
  • Publication number: 20250006470
    Abstract: An outer upper electrode for a capacitively coupled plasma (CCP) chamber is provided. The outer upper electrode is configured to surround an upper electrode of the CCP chamber. The outer upper electrode includes a horizontal section and a vertical section. The vertical section is substantially perpendicular to a surface of the upper electrode that faces a lower electrode of the CCP chamber. The vertical section has an inner surface that faces and surrounds the process space. The outer upper electrode can be powered with an RF source, a DC source, or coupled to filters. The outer upper electrode, when powered, is configured to generate secondary electrons that are accelerated in the high voltage RF or DC sheath transverse to the upper and lower electrodes and normal to an inner surface of the vertical section.
    Type: Application
    Filed: September 28, 2022
    Publication date: January 2, 2025
    Inventors: Alexei Marakhtanov, Bing Ji, Kenneth Lucchesi, John Holland
  • Patent number: 12185517
    Abstract: Disclosed is a display device, comprising: a display panel (10), wherein the display panel (10) comprises a display area (AA), a bending area (BB) and a bonding area (CC), with the bending area (BB) being arranged between the display area (AA) and the bonding area (CC); a support heat dissipation structure (20), with the support heat dissipation structure (20) being disposed on a non-display surface (10b) of the display area (AA); a driving chip (30), with the driving chip (30) being fixed to a bonding surface (10c) of the bonding area (CC); and an electromagnetic shielding structure (40), with the electromagnetic shielding structure (40) being fixed onto a side of the support heat dissipation structure (20) away from the display panel (10).
    Type: Grant
    Filed: April 8, 2021
    Date of Patent: December 31, 2024
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Shuang Zhang, Xiaoxia Huang, Bing Ji
  • Patent number: 12165844
    Abstract: An impedance match housing is described. The impedance match housing includes an impedance matching circuit having an input that is coupled to a radio frequency (RF) generator. The impedance matching circuit has an output that is coupled to a first RF strap. The impedance match housing includes a uniformity control circuit coupled in parallel to a portion of the first RF strap to modify uniformity in a processing rate of a substrate when the substrate is processed within a plasma chamber.
    Type: Grant
    Filed: November 2, 2021
    Date of Patent: December 10, 2024
    Assignee: Lam Research Corporation
    Inventors: Alexei M. Marakhtanov, Felix Leib Kozakevich, Bing Ji, John P. Holland
  • Publication number: 20240395504
    Abstract: An impedance match is described. The impedance match includes a housing having a bottom portion and a top portion. The bottom portion has match components and the top portion has an elongated body. A low frequency input is connected through the bottom portion of the housing, and the low frequency input is interconnected to a first set of capacitors and inductors. A high frequency input is connected through the bottom portion of the housing, and the high frequency input is interconnected to a second set of capacitors and inductors. An elongated strap extends between the bottom portion and the top portion of the housing. A lower portion of the elongated strap is coupled to the second set of capacitors and inductors and an upper portion of the elongated strap is connected to an RF rod at an end of the elongated body.
    Type: Application
    Filed: July 31, 2024
    Publication date: November 28, 2024
    Inventors: Felix Leib Kozakevich, Alexei Marakhtanov, Bing Ji, Ranadeep Bhowmick, John Holland
  • Patent number: 12080518
    Abstract: An impedance match is described. The impedance match includes a housing having a bottom portion and a top portion. The bottom portion has match components and the top portion has an elongated body. A low frequency input is connected through the bottom portion of the housing, and the low frequency input is interconnected to a first set of capacitors and inductors. A high frequency input is connected through the bottom portion of the housing, and the high frequency input is interconnected to a second set of capacitors and inductors. An elongated strap extends between the bottom portion and the top portion of the housing. A lower portion of the elongated strap is coupled to the second set of capacitors and inductors and an upper portion of the elongated strap is connected to an RF rod at an end of the elongated body.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: September 3, 2024
    Assignee: Lam Research Corporation
    Inventors: Felix Leib Kozakevich, Alexei Marakhtanov, Bing Ji, Ranadeep Bhowmick, John Holland
  • Patent number: 12035463
    Abstract: Disclosed are a display panel, a display device, and a terminal apparatus. The display panel comprises a display substrate having a backlight surface and a main flexible circuit board. The main flexible circuit board comprises a connection section, a fixed section and a test section. The connection section is arranged on the backlight surface, and has an outer peripheral surface comprising a first side and a second side opposite to each other. The fixed section is attached and fixed onto the backlight surface, and having one end connected to the first side and another end extending towards an end of the first side away from the second side. The test section has one end connected to the first side, and another end comprising a connection port.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: July 9, 2024
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Shuang Zhang, Xiaoxia Huang, Bing Ji
  • Publication number: 20240186112
    Abstract: A method for optimizing delivery of power to a plasma chamber is described. The method includes dividing each cycle of a low frequency (LF) radio frequency generator (RFG) into multiple time intervals. During each of the time intervals, a frequency offset of a high frequency (HF) RFG is generated for which the delivery of power is maximized. The frequency offsets provide a substantially inverse relationship compared to a voltage signal of the LF RFG for each cycle of the voltage signal. The frequency offsets for the time intervals are multiples of the low frequency. The substantially inverse relationship facilitates an increase in the delivery of power to the electrode. A total range of the frequency offsets from a reference HF frequency over the LF RF cycle depends on a power ratio of power that is supplied by the LF RFG and power that is supplied by the HF RFG.
    Type: Application
    Filed: January 17, 2024
    Publication date: June 6, 2024
    Inventors: Ranadeep Bhowmick, John Holland, Felix Leib Kozakevich, Bing Ji, Alexei Marakhtanov
  • Patent number: 11997794
    Abstract: A display device is provided. The display device includes: a display substrate having a non-display side, a first driver being provided at the non-display side of the display substrate; a touch module comprising a touch layer and a touch flexible circuit board connected with the touch layer, the touch flexible circuit board comprising a flat portion located at a side of the second portion away from the first portion and a second bent portion for connecting the touch layer and the flat portion; and a supporting wall between the flat portion of the touch flexible circuit board and the second portion of the display substrate, and the supporting wall is located on at least one side of the first driver in a direction parallel to the flat portion of the touch flexible circuit board.
    Type: Grant
    Filed: April 13, 2023
    Date of Patent: May 28, 2024
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Shuang Zhang, Xiaoxia Huang, Jiangsheng Wang, Jianjun Wu, Xuerui Gong, Bing Ji
  • Patent number: 11991830
    Abstract: Disclosed in embodiments of the present disclosure are a flexible circuit board assembly, a display assembly and a display device. The flexible circuit board assembly includes: a first flexible circuit board, including a component part, the component part being provided with components; and a first wave absorbing layer, disposed on the component part and configured to cover the components. The display assembly includes a display module and the flexible circuit board assembly; the display module includes a module body and a second binding part, and the second binding part is configured to be bent to a back surface of the module body; and the first flexible circuit board is located on the back surface of the module body and includes a first binding part, and the first binding part is bound and connected to the second binding part of the display module.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: May 21, 2024
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Qizhong Chen, Bing Ji, Liang Gao
  • Patent number: 11991907
    Abstract: The disclosure provides a display panel and a display device, including a display cell. The display cell includes: a plurality of display pins and a plurality of cell test pins, which are arranged in a bonding region of the display cell; and a chip on film bonded to a side facing away from a display surface of the display cell. An orthographic projection of the chip on film on the display cell completely covers the display pins and the cell test pins.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: May 21, 2024
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xiaoxia Huang, Bing Ji, Shuang Zhang
  • Publication number: 20240128712
    Abstract: A voltage-adaptive laser driving circuit and a control method thereof. The circuit includes: a switching power supply, a laser, a constant current driving circuit, a current setting circuit, an MCU control circuit, a voltage acquisition circuit and a voltage setting circuit; the switching power supply is connected to the laser and the voltage setting circuit respectively and used for providing electrical energy for the laser and the voltage setting circuit; and the laser is connected to the switching power supply and the constant current driving circuit respectively and used for generating laser light.
    Type: Application
    Filed: November 11, 2021
    Publication date: April 18, 2024
    Applicants: Casi Vision Technology (Luoyang) Co., Ltd., Casi Vision Technology (Beijing) Co., Ltd.
    Inventors: Xiaosong Hu, Bing Pian, Bing Ji, Wujie Zhang
  • Patent number: 11943989
    Abstract: A display module and a display device are disclosed. The display module includes a first flexible circuit board, a display substrate, and a touch sensor disposed on the display side of the display substrate. The display substrate includes a flat region and curved surface regions; the touch sensor includes first and second bonding regions; the first bonding region and the second bonding region are on a surface, away from the display substrate, of the touch sensor, stacked with the flat region and spaced apart from each other; the first flexible circuit board is electrically connected with the touch sensor through the first bonding region and the second bonding region; the first flexible circuit board includes a main body and first and second bonding connection portions; the first and second bonding connection portions are respectively bonded with the first and second bonding regions.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: March 26, 2024
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaoxia Huang, Bing Ji, Shuang Zhang
  • Patent number: 11937414
    Abstract: The display assembly includes a display module, a flexible printed board, an integrated circuit chip, and a composite tape. The integrated circuit chip and a binding portion of the flexible printed board are respectively in binding connection with the display module. The composite tape includes: a conductive fabric layer comprising a first part and a second part, the first part covering the integrated circuit chip and the binding portion, and the second part covering at least part of a grounding portion of the flexible printed board; and an insulating film layer on a side of the conductive fabric layer facing the integrated circuit chip and the flexible printed board, and including a third part, which is at the first part of the conductive fabric layer and covering the integrated circuit chip and the binding portion, and the insulating film layer avoiding the at least part of the grounding portion.
    Type: Grant
    Filed: March 31, 2023
    Date of Patent: March 19, 2024
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Qizhong Chen, Bing Ji
  • Patent number: 11935726
    Abstract: A radio frequency (RF) generator system includes first and second RF power sources, each RF power source applying a respective RF signal and second RF signal to a load. The first RF signal is applied in accordance with the application of the second RF signal. The application of the first RF signal is synchronized to application of the second RF signal. The first RF signal may be amplitude modulated in synchronization with the second RF signal, and the amplitude modulation can include blanking of the first RF signal. A frequency offset may be applied to the first RF signal in synchronization with the second RF signal. A variable actuator associated with the first RF power source may be controlled in accordance with the second RF signal.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: March 19, 2024
    Assignee: MKS Instruments, Inc.
    Inventors: Aaron T. Radomski, Benjamin J. Gitlin, Larry J. Fisk, II, Mariusz Oldziej, Aaron M. Burry, Jonathan W. Smyka, Alexei Marakhtanov, Bing Ji, Felix Leib Kozakevich, John Holland, Ranadeep Bhowmick
  • Patent number: 11908660
    Abstract: A method for optimizing delivery of power to a plasma chamber is described. The method includes dividing each cycle of a low frequency (LF) radio frequency generator (RFG) into multiple time intervals. During each of the time intervals, a frequency offset of a high frequency (HF) RFG is generated for which the delivery of power is maximized. The frequency offsets provide a substantially inverse relationship compared to a voltage signal of the LF RFG for each cycle of the voltage signal. The frequency offsets for the time intervals are multiples of the low frequency. The substantially inverse relationship facilitates an increase in the delivery of power to the electrode. A total range of the frequency offsets from a reference HF frequency over the LF RF cycle depends on a power ratio of power that is supplied by the LF RFG and power that is supplied by the HF RFG.
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: February 20, 2024
    Assignee: Lam Research Corporation
    Inventors: Ranadeep Bhowmick, John Holland, Felix Leib Kozakevich, Bing Ji, Alexei Marakhtanov
  • Publication number: 20230298866
    Abstract: A system for performing a plasma process on a wafer is provided, including: a chamber configured to receive a wafer for plasma processing and having an interior defining a plasma processing region in which a plasma is provided for the plasma processing of the wafer; a first magnetic coil disposed above the chamber and centered about an axis perpendicular to a surface plane of the wafer and through an approximate center of the wafer; a first DC power supply configured to apply a first DC current to the first magnetic coil during the plasma processing, the applied first DC current producing a magnetic field in the plasma processing region that reduces non-uniformity of the plasma.
    Type: Application
    Filed: November 2, 2021
    Publication date: September 21, 2023
    Inventors: Alexei Marakhtanov, Bing Ji, Ken Lucchesi, John Holland
  • Publication number: 20230282455
    Abstract: A substrate processing apparatus includes a vacuum chamber with a processing zone for processing a substrate using plasma and at least one magnetic field source configured to generate one or more active magnetic fields through the processing zone. The apparatus also includes a magnetic field sensor configured to detect a signal representing the one or more active magnetic fields, and a controller coupled to the magnetic field sensor, and the at least one magnetic field source. The controller is configured to detect a target value corresponding to at least one characteristic of the one or more active magnetic fields, set an initial current through the at least one magnetic field source, the initial current corresponding to the target value; and adjust a subsequent current through the at least one magnetic field source based on the detected signal representing the one or more active magnetic fields.
    Type: Application
    Filed: May 17, 2022
    Publication date: September 7, 2023
    Inventors: Alecia Chantalle Griffin, Anthony de la Llera, Peter Bradley Phillips, Bing Ji