Patents by Inventor Jianping Zhao

Jianping Zhao 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: 20150126036
    Abstract: The invention is an plasma processing system with a plasma chamber for processing semiconductor substrates, comprising: a radio frequency or microwave power generator coupled to the plasma chamber; a low pressure vacuum system coupled to the plasma chamber; and at least one chamber surface that is configured to be exposed to a plasma, the chamber surface comprising: a YxOyFz layer that comprises Y in a range from 20 to 40%, O in a range from ?60%, and F in a range of ?75%. Alternatively, the YxOyFz layer can comprise Y in a range from 25 to 40%, O in a range from 40 to 55%, and F in a range of 5 to 35% or Y in a range from 25 to 40%, O in a range from 5 to 40%, and F in a range of 20 to 70%.
    Type: Application
    Filed: November 5, 2014
    Publication date: May 7, 2015
    Inventor: Jianping Zhao
  • Publication number: 20150126046
    Abstract: A processing system is disclosed, having a multiple power transmission elements with an interior cavity that may be arranged around a plasma processing chamber. Each of the power transmission elements may propagates electromagnetic energy that may be used to generate plasma within the plasma process chamber. The power transmission elements may be designed to accommodate a range of power and frequency ranges that range from 500W to 3500W and 0.9 GHz to 9 GHz. In one embodiment, the power transmission elements may include a rectangular interior cavity that enables the generation of a standing wave with two or more modes. In another embodiment, the power transmission elements may have a cylindrical interior cavity that may be placed along the plasma processing chamber or have one end of the cylinder placed against the plasma processing chamber.
    Type: Application
    Filed: November 6, 2014
    Publication date: May 7, 2015
    Inventors: Merritt Funk, Megan Doppel, John Entralgo, Jianping Zhao, Toshihisa Nozawa
  • Publication number: 20150116173
    Abstract: An electromagnetic dipole antenna designed in the present invention includes an antenna radiating unit and a metal ground, where the antenna radiating unit mainly includes vertical electric dipole and horizontal magnetic dipole, where the vertical electric dipole and the horizontal magnetic dipole jointly form an electromagnetic coupling structure. The antenna has advantages of small size, low profile, and the like.
    Type: Application
    Filed: December 29, 2014
    Publication date: April 30, 2015
    Inventors: Wenxin Zhang, Qihao Xu, Hongli Peng, Zehe Zhu, Jianping Zhao, Ni Ma
  • Patent number: 8968588
    Abstract: A surface wave plasma (SWP) source couples pulsed microwave (MW) energy into a processing chamber through, for example, a radial line slot antenna, to result in a low mean electron energy (Te). To prevent impingement of the microwave energy onto the surface of a substrate when plasma density is low between pulses, an ICP source, such as a helical inductive source, a planar RF coil, or other inductively coupled source, is provided between the SWP source and the substrate to produce plasma that is opaque to microwave energy. The ICP source can also be pulsed in synchronism with the pulsing of the MW plasma in phase with the ramping up of the MW pulses. The ICP also adds an edge dense distribution of plasma to a generally chamber centric MW plasma to improve plasma uniformity.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: March 3, 2015
    Assignee: Tokyo Electron Limited
    Inventors: Jianping Zhao, Lee Chen, Vincent M. Donnelly, Demetre J. Economou, Merritt Funk, Radha Sundararajan
  • Publication number: 20140377966
    Abstract: A processing system is disclosed, having a power transmission element with an interior cavity that propagates electromagnetic energy proximate to a continuous slit in the interior cavity. The continuous slit forms an opening between the interior cavity and a substrate processing chamber. The electromagnetic energy may generate an alternating charge in the continuous slit that enables the generation of an electric field that may propagate into the processing chamber. The electromagnetic energy may be conditioned prior to entering the interior cavity to improve uniformity or stability of the electric field. The conditioning may include, but is not limited to, phase angle, field angle, and number of feeds into the interior cavity.
    Type: Application
    Filed: June 19, 2014
    Publication date: December 25, 2014
    Inventors: Merritt Funk, Jianping Zhao, Lee Chen
  • Publication number: 20140374025
    Abstract: A processing system is disclosed, having a power transmission element with an interior cavity that propagates electromagnetic energy proximate to a continuous slit in the interior cavity. The continuous slit forms an opening between the interior cavity and a substrate processing chamber. The electromagnetic energy may generate an alternating charge in the continuous slit that enables the generation of an electric field that may propagate into the processing chamber. The electromagnetic energy may be conditioned prior to entering the interior cavity to improve uniformity or stability of the electric field. The conditioning may include, but is not limited to, phase angle, field angle, and number of feeds into the interior cavity.
    Type: Application
    Filed: June 19, 2014
    Publication date: December 25, 2014
    Inventors: Jianping Zhao, Merritt Funk, Lee Chen
  • Patent number: 8883024
    Abstract: The invention provide apparatus and methods for creating gate structures on a substrate in real-time using Vacuum Ultra-Violet (VUV) data and Electron Energy Distribution Function (EEDƒ) data and associated (VUV/EEDƒ)-related procedures in (VUV/EEDƒ) etch systems. The (VUV/EEDƒ)-related procedures can include multi-layer-multi-step processing sequences and (VUV/EEDƒ)-related models that can include Multi-Input/Multi-Output (MIMO) models.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: November 11, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Lee Chen, Jianping Zhao
  • Patent number: 8877080
    Abstract: The invention provides an apparatus and methods for creating gate structures on a substrate in real-time using Vacuum Ultra-Violet (VUV) data and Electron Energy Distribution Function (EEDf) data and associated (VUV/EEDf)-related procedures in (VUV/EEDf) etch systems. The (VUV/EEDf)-related procedures can include multi-layer-multi-step processing sequences and (VUV/EEDf)-related models that can include Multi-Input/Multi-Output (MIMO) models.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: November 4, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Lee Chen, Jianping Zhao
  • Patent number: 8847159
    Abstract: An ion energy analyzer for determining an ion energy distribution of a plasma and comprising an entrance grid, a selection grid, and an ion collector. The entrance grid includes a first plurality of openings dimensioned to be less than a Debye length for the plasma. The ion collector is coupled to the entrance grid via a first voltage source. The selection grid is positioned between the entrance grid and the ion collector and is coupled to the entrance grid via a second voltage source. An ion current meter is coupled to the ion collector to measure an ion flux onto the ion collector and transmit a signal related thereto.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: September 30, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Lee Chen, Barton Lane, Merritt Funk, Jianping Zhao, Radha Sundararajan
  • Publication number: 20140262040
    Abstract: A plasma-tuning rod configured for use with a microwave processing system. The waveguide includes a first dielectric portion having a first outer diameter. A second dielectric portion, with a second outer diameter greater than the first outer diameter surrounds the first dielectric portion, and may be coaxial therewith. In some embodiments of the present invention, a dielectric constant of the first dielectric portion may be equal to or greater than a dielectric constant of the second dielectric portion.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Jianping Zhao, Peter L. G. Ventzek, Lee Chen, Barton Lane, Merritt Funk, Radha Sundararajan, Iwao Toshihiko, Zhiying Chen
  • Publication number: 20140262041
    Abstract: A processing system is disclosed, having a power transmission element with an interior cavity that propagates electromagnetic energy proximate to a continuous slit in the interior cavity. The continuous slit forms an opening between the interior cavity and a substrate processing chamber. The electromagnetic energy may generate an alternating charge in the continuous slit that enables the generation of an electric field that may propagate into the processing chamber. The electric field may interact with process gas in the processing chamber to generate plasma for treating the substrate. The interior cavity may be isolated from the process chamber by a dielectric component that covers the continuous slit. The power transmission element may be used to control plasma density within the process chamber, either by itself or in combination with other plasma sources.
    Type: Application
    Filed: March 11, 2014
    Publication date: September 18, 2014
    Inventors: Merritt Funk, Jianping Zhao, Lee Chen, Toshihiko Iwao, Toshihisa Nozawa, Zhiying Chen, Peter Ventzek
  • Publication number: 20140273485
    Abstract: This disclosure relates to a plasma processing system for controlling plasma density near the edge or perimeter of a substrate that is being processed. The plasma processing system may include a plasma chamber that can receive and process the substrate using plasma for etching the substrate, doping the substrate, or depositing a film on the substrate. This disclosure relates to a plasma processing system for controlling plasma density near the edge or perimeter of a substrate that is being processed. In one embodiment, the plasma density may be controlled by reducing the rate of loss of ions to the chamber wall during processing. This may include biasing a dual electrode ring assembly in the plasma chamber to alter the potential difference between the chamber wall region and the bulk plasma region.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 18, 2014
    Applicant: Tokyo Electron Limited
    Inventors: Jianping Zhao, Lee Chen, Merritt Funk, Zhiying Chen
  • Publication number: 20140262042
    Abstract: A processing system is disclosed, having a power transmission element with an interior cavity that propagates electromagnetic energy proximate to a continuous slit in the interior cavity. The continuous slit forms an opening between the interior cavity and a substrate processing chamber. The electromagnetic energy may generate an alternating charge in the continuous slit that enables the generation of an electric field that may propagate into the processing chamber. The electric field may interact with process gas in the processing chamber to generate plasma for treating the substrate. The interior cavity may be isolated from the process chamber by a dielectric component that covers the continuous slit. The power transmission element may be used to control plasma density within the process chamber, either by itself or in combination with other plasma sources.
    Type: Application
    Filed: March 11, 2014
    Publication date: September 18, 2014
    Inventors: Merritt Funk, Jianping Zhao, Lee Chen, Toshihiko Iwao, Toshihisa Nozawa, Zhiying Chen, Peter Ventzek
  • Publication number: 20140273538
    Abstract: This disclosure relates to a plasma processing system for controlling plasma density near the edge or perimeter of a substrate that is being processed. The plasma processing system may include a plasma chamber that can receive and process the substrate using plasma for etching the substrate, doping the substrate, or depositing a film on the substrate. This disclosure relates to a plasma processing system that may be configured to enable non-ambipolar diffusion to counter ion loss to the chamber wall. The plasma processing system may include a ring cavity coupled to the plasma processing system that is in fluid communication with plasma generated in the plasma processing system. The ring cavity may be coupled to a power source to form plasma that may diffuse ions into the plasma processing system to minimize the impact of ion loss to the chamber wall.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: Tokyo Electron Limited
    Inventors: Lee Chen, Zhiying Chen, Jianping Zhao, Merritt Funk
  • Publication number: 20140265846
    Abstract: A method of treating a substrate with plasma is described. In particular, the method includes disposing a substrate in a plasma processing system, disposing a hollow cathode plasma source including at least one hollow cathode within the plasma processing system, and disposing a grid between the cathode outlet of the plurality of hollow cathodes and the substrate. The method further includes electrically coupling the grid to electrical ground, coupling a voltage to the at least one hollow cathode relative to electrical ground, and generating plasma in hollow cathode by ion-induced secondary electron emission of energetic electrons that move along a first trajectory, and diffusing lower energy electrons along a second trajectory across a first region of the interior space between the cathode outlet and the grid, through the grid, and into a second region of the interior space in fluid contact with the substrate.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Inventors: Jianping Zhao, Lee Chen, Radha Sundararajan, Merritt Funk
  • Patent number: 8816281
    Abstract: A process by which an ion energy analyzer is manufactured includes processing a first substrate to form an entrance grid having a first channel and a first plurality of openings extending therethrough. A second substrate is processed to form a selection grid having a second channel therein and a second plurality of openings extending therethrough. A third substrate is processed to form an ion collector having a third channel therein. The entrance grid is operably coupled to, and electrically isolated from, the selection grid, which is, in turn, operably coupled to, and electrically isolated from, the ion collector.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: August 26, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Merritt Funk, Lee Chen, Barton Lane, Jianping Zhao, Radha Sundararajan
  • Patent number: 8808496
    Abstract: The invention provides a plurality of plasma tuning rod subsystems. The plasma tuning rod subsystems can comprise one or more microwave cavities configured to couple electromagnetic (EM) energy in a desired EM wave mode to a plasma by generating resonant microwave energy in one or more plasma tuning rods within and/or adjacent to the plasma. One or more microwave cavity assemblies can be coupled to a process chamber, and can comprise one or more tuning spaces/cavities. Each tuning space/cavity can have one or more plasma tuning rods coupled thereto. Some of the plasma tuning rods can be configured to couple the EM energy from one or more of the resonant cavities to the process space within the process chamber and thereby create uniform plasma within the process space.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: August 19, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Jianping Zhao, Lee Chen, Merritt Funk, Toshihiko Iwao, Peter L. G. Ventzek
  • Patent number: 8721833
    Abstract: A replaceable chamber element for use in a plasma processing system, such as a plasma etching system, is described. The replaceable chamber element includes a chamber component configured to be exposed to plasma in a plasma processing system, wherein the chamber component is fabricated of a ferroelectric material.
    Type: Grant
    Filed: February 5, 2012
    Date of Patent: May 13, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Zhiying Chen, Jianping Zhao, Lee Chen, Merritt Funk, Radha Sundararajan
  • Publication number: 20140127902
    Abstract: A method of integrating a fluorine-based dielectric with a metallization scheme is described. The method includes forming a fluorine-based dielectric layer on a substrate, forming a metal-containing layer on the substrate, and adding a buffer layer or modifying a composition of the fluorine-based dielectric layer proximate an interface between the fluorine-based dielectric layer and the metal-containing layer.
    Type: Application
    Filed: January 13, 2014
    Publication date: May 8, 2014
    Applicant: Tokyo Electron Limited
    Inventors: Jianping ZHAO, Lee CHEN
  • Publication number: 20140113454
    Abstract: A plasma processing apparatus includes a processing chamber having a plasma processing space therein and a substrate support in the processing chamber at a first end for supporting a substrate. A plasma source is coupled into the processing space and configured to form a plasma at a second end of the processing chamber opposite said first end. The apparatus further includes a magnetic grid having an intensity of a magnetic flux therein, a plurality of passageways penetrating from a first side to a second side, a thickness, a transparency, a passageway aspect ratio, and a position within the processing chamber between the second end and the substrate. The intensity, the thickness, the transparency, the passageway aspect ratio, and the position are configured to cause electrons having energies above an acceptable maximum level to divert from the direction. A method of obtaining low average electron energy flux onto the substrate is also provided.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 24, 2014
    Inventors: Lee Chen, Jianping Zhao, Merritt Funk, Zhiying Chen