Patents by Inventor Valentin Todorow

Valentin Todorow 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: 10825708
    Abstract: Process kit components for use with a substrate support of a process chamber are provided herein. In some embodiments, a process kit ring may include a ring shaped body having an outer edge, an inner edge, a top surface and a bottom, wherein the outer edge has a diameter of about 12.473 inches to about 12.479 inches and the inner edge has a diameter of about 11.726 inches to about 11.728 inches, and wherein the ring shaped body has a height of about 0.116 to about 0.118 inches; and a plurality of protrusions disposed on the top surface of the ring shaped body, each of the plurality of protrusions disposed symmetrically about the ring shaped body.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: November 3, 2020
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Valentin Todorow, Samer Banna, Imad Yousif, Albert Wang, Gary Leray
  • Patent number: 10546731
    Abstract: A method, apparatus and system for dechucking a processing object from a surface of an electrostatic chuck (ESC) in a processing chamber can include applying to the ESC for a first time interval, a first dechuck voltage having a substantially equal magnitude and opposite polarity of a chuck voltage chucking the processing object to the surface of the ESC, selecting a second dechuck voltage having an opposite polarity as the first dechuck voltage, linearly sweeping the ESC voltage from the first dechuck voltage to the second dechuck voltage over a second time interval, monitoring the ESC current during the second time interval until a current spike in the ESC current above a threshold is detected, communicating a command to move support pins up to remove the processing object from the ESC surface, and maintaining the second dechuck voltage until the processing object is separated from the surface of the ESC.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: January 28, 2020
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Haitao Wang, Michael G. Chafin, Kartik Ramaswamy, Yue Guo, Valentin Todorow, Kenny Doan, Sergio F. Shoji, Brad L. Mays, Usama Dadu
  • Publication number: 20190221463
    Abstract: Process kit components for use with a substrate support of a process chamber are provided herein. In some embodiments, a process kit ring may include a ring shaped body having an outer edge, an inner edge, a top surface and a bottom, wherein the outer edge has a diameter of about 12.473 inches to about 12.479 inches and the inner edge has a diameter of about 11.726 inches to about 11.728 inches, and wherein the ring shaped body has a height of about 0.116 to about 0.118 inches; and a plurality of protrusions disposed on the top surface of the ring shaped body, each of the plurality of protrusions disposed symmetrically about the ring shaped body.
    Type: Application
    Filed: March 21, 2019
    Publication date: July 18, 2019
    Inventors: VALENTIN TODOROW, SAMER BANNA, IMAD YOUSIF, ALBERT WANG, GARY LERAY
  • Patent number: 10271416
    Abstract: A plasma processing apparatus may include a process chamber having an interior processing volume, first, second and third RF coils disposed proximate the process chamber to couple RF energy into the processing volume, wherein the second RF coil disposed coaxially with respect to the first RF coil, and wherein the third RF coil disposed coaxially with respect to the first and second RF coils, at least one ferrite shield disposed proximate to at least one of the first, second or third RF coils, wherein the ferrite shield is configured to locally guide a magnetic field produced by an RF current flow through the first, second or third RF coils toward the process chamber, wherein the plasma processing apparatus is configured to control a phase of each RF current flow through each of the of the first, second or third RF coils.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: April 23, 2019
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Samer Banna, Waheb Bishara, Ryan Giar, Valentin Todorow, Dmitry Lubomirsky, Kyle R. Tantiwong
  • Patent number: 9945033
    Abstract: Apparatus for processing substrates are provided herein. In some embodiments, plasma processing apparatus may include a process chamber having a dielectric lid and an interior processing volume beneath the dielectric lid, a first RF coil to couple RF energy into the processing volume, and an RF shielded lid heater coupled to a top surface of the dielectric lid. The RF shielded lid heater may include an annular member, and a plurality of spokes, wherein each of the plurality of spokes includes one of (a) a first portion that extends downward from the annular and couples the annular member to a second portion of the spoke that extends radially inward, or (b) a first portion that extends radially outward from the annular member.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: April 17, 2018
    Assignee: APPLIED MATERIALS, INC.
    Inventors: Samer Banna, Vladimir Knyazik, Waheb Bishara, Valentin Todorow
  • Publication number: 20150191823
    Abstract: Apparatus for processing substrates are provided herein. In some embodiments, a plasma processing apparatus may include a process chamber having a dielectric lid and an interior processing volume beneath the dielectric lid, a first RF coil to couple RF energy into the processing volume, and an RF shielded lid heater coupled to a top surface of the dielectric lid comprising an annular member, and a plurality of spokes, wherein each of the plurality of spokes includes one of (a) a first portion that extends downward from the annular and couples the annular member to a second portion of the spoke that extends radially inward, or (b) a first portion that extends radially outward from the annular member.
    Type: Application
    Filed: December 16, 2014
    Publication date: July 9, 2015
    Inventors: Samer Banna, Vladimir Knyazik, Waheb Bishara, Valentin Todorow
  • Patent number: 8988848
    Abstract: Apparatus for processing substrates are provided herein. In some embodiments, an apparatus for processing a substrate may include a substrate support comprising a first electrode disposed within the substrate support and having a peripheral edge and a first surface; a substrate support surface disposed above the first surface of the first electrode; and a second electrode disposed within the substrate support and extending radially beyond the peripheral edge of the first electrode, wherein the second electrode has a second surface disposed about and above the first surface of the first electrode.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: March 24, 2015
    Assignee: Applied Materials, Inc.
    Inventors: Valentin Todorow, Samer Banna, Imad Yousif, Albert Wang, Gary Leray
  • Patent number: 8956500
    Abstract: An inductively-coupled plasma processing chamber has a chamber with a ceiling. A first and second antenna are placed adjacent to the ceiling. The first antenna is concentric to the second antenna. A plasma source power supply is coupled to the first and second antenna. The plasma source power supply generates a first RF power to the first antenna, and a second RF power to the second antenna. A substrate support disposed within the chamber. The size of the first antenna and a distance between the substrate support are such that the etch rate of the substrate on the substrate support is substantially uniform.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: February 17, 2015
    Assignee: Applied Materials, Inc.
    Inventors: Stephen Yuen, Kyeong-Tae Lee, Valentin Todorow, Tae Won Kim, Anisul Khan, Shashank Deshmukh
  • Patent number: 8933628
    Abstract: A plasma processing apparatus may include a process chamber having an interior processing volume; a first RF coil to couple RF energy into the processing volume; a second RF coil to couple RF energy into the processing volume, the second RF coil disposed coaxially with respect to the first RF coil; and a third RF coil to couple RF energy into the processing volume, the third RF coil disposed coaxially with respect to the first RF coil, wherein when RF current flows through the each of the RF coils, either the RF current flows out-of-phase through at least one of the RF coils with respect to at least another of the RF coils, or the phase of the RF current may be selectively controlled to be in-phase or out-of-phase in at least one of the RF coils with respect to at least another of the RF coils.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: January 13, 2015
    Assignee: Applied Materials, Inc.
    Inventors: Samer Banna, Zhigang Chen, Valentin Todorow
  • Patent number: 8633423
    Abstract: Methods and apparatus for controlling the temperature of a substrate during processing are provided herein. In some embodiments, an apparatus for retaining and controlling substrate temperature may include a puck of dielectric material; an electrode disposed in the puck proximate a surface of the puck upon which a substrate is to be retained; and a plurality of heater elements disposed in the puck and arranged in concentric rings to provide independent temperature control zones.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: January 21, 2014
    Assignee: Applied Materials, Inc.
    Inventors: Xing Lin, Douglas A. Buchberger, Jr., Xiaoping Zhou, Valentin Todorow, Andrew Nguyen, Anchel Sheyner
  • Patent number: 8264154
    Abstract: Embodiments of the present invention generally provide methods and apparatus for pulsed plasma processing over a wide process window. In some embodiments, an apparatus may include an RF power supply having frequency tuning and a matching network coupled to the RF power supply that share a common sensor for reading reflected RF power reflected back to the RF power supply. In some embodiments, an apparatus may include an RF power supply having frequency tuning and a matching network coupled to the RF power supply that share a common sensor for reading reflected RF power reflected back to the RF power supply and a common controller for tuning each of the RF power supply and the matching network.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: September 11, 2012
    Assignee: Applied Materials, Inc.
    Inventors: Samer Banner, Valentin Todorow, Kartik Ramaswamy
  • Publication number: 20120091108
    Abstract: Methods and apparatus for controlling the temperature of a substrate during processing are provided herein. In some embodiments, an apparatus for retaining and controlling substrate temperature may include a puck of dielectric material; an electrode disposed in the puck proximate a surface of the puck upon which a substrate is to be retained; and a plurality of heater elements disposed in the puck and arranged in concentric rings to provide independent temperature control zones.
    Type: Application
    Filed: April 29, 2011
    Publication date: April 19, 2012
    Applicant: APPLIED MATERIALS, INC.
    Inventors: XING LIN, DOUGLAS A. BUCHBERGER, Jr., XIAOPING ZHOU, VALENTIN TODOROW, ANDREW NGUYEN, ANCHEL SHEYNER
  • Patent number: 7837838
    Abstract: The present invention generally provides methods and apparatuses that are adapted to form a high quality dielectric gate layer on a substrate. Embodiments contemplate a method wherein a metal plasma treatment process is used in lieu of a standard nitridization process to form a high dielectric constant layer on a substrate. Embodiments further contemplate an apparatus adapted to “implant” metal ions of relatively low energy in order to reduce ion bombardment damage to the gate dielectric layer, such as a silicon dioxide layer and to avoid incorporation of the metal atoms into the underlying silicon. In general, the process includes the steps of forming a high-k dielectric and then terminating the surface of the deposited high-k material to form a good interface between the gate electrode and the high-k dielectric material.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: November 23, 2010
    Assignee: Applied Materials, Inc.
    Inventors: Thai Cheng Chua, Alex M. Paterson, Steven Hung, Patricia M. Liu, Tatsuya Sato, Valentin Todorow, John P. Holland
  • Patent number: 7645710
    Abstract: The present invention generally provides methods and apparatuses that are adapted to form a high quality dielectric gate layer on a substrate. Embodiments contemplate a method wherein a metal plasma treatment process is used in lieu of a standard nitridization process to form a high dielectric constant layer on a substrate. Embodiments further contemplate an apparatus adapted to “implant” metal ions of relatively low energy in order to reduce ion bombardment damage to the gate dielectric layer, such as a silicon dioxide layer and to avoid incorporation of the metal atoms into the underlying silicon. In general, the process includes the steps of forming a high-k dielectric and then terminating the surface of the deposited high-k material to form a good interface between the gate electrode and the high-k dielectric material.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: January 12, 2010
    Assignee: Applied Materials, Inc.
    Inventors: Christopher Sean Olsen, Thai Cheng Chua, Steven Hung, Patricia M. Liu, Tatsuya Sato, Alex M. Paterson, Valentin Todorow, John P. Holland
  • Publication number: 20090284156
    Abstract: Embodiments of the present invention generally provide methods and apparatus for pulsed plasma processing over a wide process window. In some embodiments, an apparatus may include an RF power supply having frequency tuning and a matching network coupled to the RF power supply that share a common sensor for reading reflected RF power reflected back to the RF power supply. In some embodiments, an apparatus may include an RF power supply having frequency tuning and a matching network coupled to the RF power supply that share a common sensor for reading reflected RF power reflected back to the RF power supply and a common controller for tuning each of the RF power supply and the matching network.
    Type: Application
    Filed: May 13, 2009
    Publication date: November 19, 2009
    Applicant: APPLIED MATERIALS, INC.
    Inventors: SAMER BANNA, VALENTIN TODOROW, KARTIK RAMASWAMY
  • Publication number: 20080264904
    Abstract: An inductively-coupled plasma processing chamber has a chamber with a ceiling. A first and second antenna are placed adjacent to the ceiling. The first antenna is concentric to the second antenna. A plasma source power supply is coupled to the first and second antenna. The plasma source power supply generates a first RF power to the first antenna, and a second RF power to the second antenna. A substrate support disposed within the chamber. The size of the first antenna and a distance between the substrate support are such that the etch rate of the substrate on the substrate support is substantially uniform.
    Type: Application
    Filed: April 24, 2007
    Publication date: October 30, 2008
    Inventors: STEPHEN YUEN, Kyeong-Tae Lee, Valentin Todorow, Tae Won Kim, Anisul Khan, Shashank Deshmukh
  • Publication number: 20080023443
    Abstract: Embodiments of the invention generally provide etch or CVD plasma processing methods and apparatus used to generate a uniform plasma across the surface of a substrate by modulation pulsing the power delivered to a plurality of plasma controlling devices found in a plasma processing chamber. The plasma generated and/or sustained in the plasma processing chamber is created by the one or more plasma controlling devices that are used to control, generate, enhance, and/or shape the plasma during the plasma processing steps by use of energy delivered from a RF power source. Plasma controlling devices may include, for example, one or more coils (inductively coupled plasma), one or more electrodes (capacitively coupled plasma), and/or any other energy inputting device such as a microwave source.
    Type: Application
    Filed: June 20, 2007
    Publication date: January 31, 2008
    Inventors: Alexander Paterson, Elizabeth Pavel, Valentin Todorow, Huong Nguyen, Thomas Kropewnicki, Brian Hatcher, John Holland
  • Publication number: 20070246162
    Abstract: A plasma reactor for processing a workpiece includes a reactor chamber and a workpiece support within the chamber, the chamber having a ceiling facing the workpiece support, an inductively coupled plasma source power applicator overlying the ceiling, and an RF power generator coupled to the inductively coupled source power applicator, a capacitively coupled plasma source power applicator comprising a source power electrode at one of: (a) the ceiling (b) the workpiece support, and plural VHF power generators of different fixed frequencies coupled to the capacitively coupled source power applicator, and a controller for independently controlling the power output levels of the plural VHF generators so as to control an effective VHF frequency applied to the source power electrode.
    Type: Application
    Filed: April 24, 2006
    Publication date: October 25, 2007
    Inventors: Alexander Paterson, Valentin Todorow, Theodoros Panagopoulos, Brian Hatcher, Dan Katz, Edward Hammond, John Holland, Alexander Matyushkin
  • Publication number: 20070245960
    Abstract: A method of processing a workpiece in the chamber of a plasma reactor includes introducing a process gas into the chamber, capacitively coupling VHF plasma source power into a process region of the chamber that overlies the wafer while inductively coupling RF plasma source power into the process region. A particular plasma ion density level is established by maintaining the total amount of plasma source power inductively and capacitively coupled into the chamber at a level that provides the desired plasma ion density. Chemical species distribution or content in the process region plasma is controlled by adjusting the ratio between the amounts of the capacitively coupled power and the inductively coupled power while continuing to maintain the level of total plasma source power.
    Type: Application
    Filed: April 24, 2006
    Publication date: October 25, 2007
    Inventors: Alexander Paterson, Valentin Todorow, Theodoros Panagopoulos, Brian Hatcher, Dan Katz, Edward Hammond, John Holland, Alexander Matyushkin
  • Publication number: 20070245958
    Abstract: A method of processing a workpiece in the chamber of a plasma reactor includes introducing a process gas into the chamber, simultaneously (a) capacitively coupling VHF plasma source power into a process region of the chamber that overlies the wafer, and (b) inductively coupling RF plasma source power into the process region, and controlling radial distribution of plasma ion density in the process region by controlling the effective frequency of the VHF source power. In a preferred embodiment, the step of coupling VHF source power is performed by coupling VHF source power from different generators having different VHF frequencies, and the step of controlling the effective frequency is performed by controlling the ratio of power coupled by the different generators.
    Type: Application
    Filed: April 24, 2006
    Publication date: October 25, 2007
    Inventors: Alexander Paterson, Valentin Todorow, Theodoros Panagopoulos, Brian Hatcher, Dan Katz, Edward Hammond, John Holland, Alexander Matyushkin