Patents by Inventor Hideyoshi Tsuruta

Hideyoshi Tsuruta 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: 10037910
    Abstract: A wafer holder 10 includes a resin adhesive layer 16 between a ceramic electrostatic chuck 12 and a metal cooling plate 14. The adhesive layer 16 includes a first layer 16a in contact with the electrostatic chuck 12, a second layer 16b in contact with the cooling plate 14, and an intermediate layer 16c located between the first layer 16a and the second layer 16b. Heat resistance of each of the first layer 16a and the intermediate layer 16c is higher than heat resistance of the second layer 16b, flexibility of the second layer 16b is higher than flexibility of each of the first layer 16a and the intermediate layer 16c, and the layers are in hermetic contact with each other.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: July 31, 2018
    Assignee: NGK Insulators, Ltd.
    Inventors: Takuya Yanoh, Kazuma Ohba, Tetsuya Kawajiri, Hideyoshi Tsuruta
  • Publication number: 20160196999
    Abstract: A wafer holder 10 includes a resin adhesive layer 16 between a ceramic electrostatic chuck 12 and a metal cooling plate 14. The adhesive layer 16 includes a first layer 16a in contact with the electrostatic chuck 12, a second layer 16b in contact with the cooling plate 14, and an intermediate layer 16c located between the first layer 16a and the second layer 16b. Heat resistance of each of the first layer 16a and the intermediate layer 16c is higher than heat resistance of the second layer 16b, flexibility of the second layer 16b is higher than flexibility of each of the first layer 16a and the intermediate layer 16c, and the layers are in hermetic contact with each other.
    Type: Application
    Filed: March 14, 2016
    Publication date: July 7, 2016
    Inventors: Takuya YANOH, Kazuma OHBA, Tetsuya KAWAJIRI, Hideyoshi TSURUTA
  • Patent number: 7763831
    Abstract: A heating device has a ceramic base with a heating surface, and a heating body embedded in the ceramic base. The heating device includes a thermal conductive member positioned between the heating surface and the heating body in the ceramic base. The thermal conductive member has a thermal conductivity that is higher than the ceramic base and as such, the heating device achieves superior temperature uniformity of a heated object particularly in a semiconductor device manufacturing process.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: July 27, 2010
    Assignee: NGK Insulators, Ltd.
    Inventors: Ikuhisa Morioka, Yasufumi Aihara, Hideyoshi Tsuruta
  • Patent number: 7679034
    Abstract: The power-supplying member comprises: a first rod-shaped member connected to at least one of a heating resistor and an electrode; a second rod-shaped member connected to a power supply; and a thermal-function member, which is disposed between the first rod-shaped member and the second rod-shaped member, and which has a smaller axial cross section area and a larger surface area as compared to the first and second rod-shaped members.
    Type: Grant
    Filed: April 19, 2006
    Date of Patent: March 16, 2010
    Assignee: NGK Insulators, Ltd.
    Inventors: Yoshinobu Goto, Hideyoshi Tsuruta
  • Patent number: 7582184
    Abstract: A plasma processing member includes a ceramic base, a plasma generating electrode embedded in the ceramic base, and an electrode power supply member connected to the plasma generating electrode. The impedance of the plasma processing member when plasma is generated using high frequency power at a frequency higher than 13.56 MHz is adjusted to 25? or less.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: September 1, 2009
    Assignee: NGK Insulators, Ltd.
    Inventors: Yasumitsu Tomita, Hideyoshi Tsuruta
  • Patent number: 7576967
    Abstract: An electrostatic chuck includes a ceramic base having an electrode embedded in vicinity to a holding face for holding a substrate. On a back side of this ceramic base, provided are a terminal connected to the electrode, a wafer temperature control member, and an insulating member for insulating the temperature control member from the terminal. This insulating member has a flange portion on its end portion in contact with the ceramic base, and is made of highly thermal conductive ceramics.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: August 18, 2009
    Assignee: NGK Insulators, Ltd.
    Inventors: Ikuhisa Morioka, Yasufumi Aihara, Hideyoshi Tsuruta
  • Publication number: 20090159588
    Abstract: A heating apparatus 10 includes a ceramic base 11 having a heating surface 11a and provided with a resistance heating body 12 embedded therein, and a temperature adjusting member 21 fixedly fastened proximal to a back surface of the ceramic base 11. A heat conductive member 14 having a thermal conductivity higher than the ceramic base 11 is provided between the heating surface of the ceramic base 11 and the resistance heating body 12. A gas is introduced to an air gap 31 between the ceramic base 11 and the temperature adjusting member 21 while controlling the gas pressure.
    Type: Application
    Filed: September 8, 2008
    Publication date: June 25, 2009
    Applicant: NGK Insulators, Ltd.
    Inventors: Ikuhisa Morioka, Hideyoshi TSURUTA, Yasufumi Aihara
  • Patent number: 7525071
    Abstract: A power-supplying member comprises: a first rod-shaped member connected to power-supplied object; a second rod-shaped member connected to power supply; and a thermal-expansion absorbing member, which is disposed between the first rod-shaped member and the second rod-shaped member, and which shrinks in a longitudinal direction in response to changes in shape of the first rod-shaped member and the second rod-shaped member in the longitudinal direction due to thermal expansion.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: April 28, 2009
    Assignee: NGK Insulators, Ltd.
    Inventors: Yoshinobu Goto, Hideyoshi Tsuruta
  • Patent number: 7403386
    Abstract: An electrostatic chuck includes; a base made of ceramics, in which an electrode generating electrostatic attractive force is embedded; a cooling member which contains metal; a bonding material which bonds the base and the cooling member to each other; a gas providing passage which penetrates the base, the bonding material, and the cooling member; and an engagement member and a bolt member, which are fixing members mechanically fixing the base and the cooling member to each other.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: July 22, 2008
    Assignee: NGK Insulators, Ltd.
    Inventors: Yasufumi Aihara, Hideyoshi Tsuruta, Keiji Kawasaki
  • Publication number: 20080142501
    Abstract: A heating device has a ceramic base with a heating surface, and a heating body embedded in the ceramic base. The heating device includes a thermal conductive member between the heating surface and the heating body in the ceramic base. The thermal conductive member has thermal conductivity higher than the ceramic base. The present, heating device achieves superior temperature uniformity of a heated object, particularly in the semiconductor device manufacturing process.
    Type: Application
    Filed: November 14, 2007
    Publication date: June 19, 2008
    Applicant: NGK Insulators, Ltd.
    Inventors: Ikuhisa MORIOKA, Yasufumi AIHARA, Hideyoshi TSURUTA
  • Publication number: 20070223175
    Abstract: An electrostatic chuck includes a ceramic base having an electrode embedded in vicinity to a holding face for holding a substrate. On a back side of this ceramic base, provided are a terminal connected to the electrode, a wafer temperature control member, and an insulating member for insulating the temperature control member from the terminal. This insulating member has a flange portion on its end portion in contact with the ceramic base, and is made of highly thermal conductive ceramics.
    Type: Application
    Filed: March 19, 2007
    Publication date: September 27, 2007
    Applicant: NGK Insulators, Ltd.
    Inventors: Ikuhisa Morioka, Yasufumi Aihara, Hideyoshi Tsuruta
  • Patent number: 7247818
    Abstract: A substrate heating apparatus includes a ceramic base having a concave heating surface on which a substrate is placed, and a resistance heating element buried in the ceramic base. The central part of the concave heating surface defines the lowest point of the heating surface and the peripheral part of the concave heating surface defines the highest point of the heating surface.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: July 24, 2007
    Assignee: NGK Insulators, Ltd.
    Inventors: Nobuyuki Kondou, Hideyoshi Tsuruta
  • Patent number: 7247819
    Abstract: A substrate heating apparatus is provided, including a base group including a plurality of bases, which are arranged substantially into a plate with a gap interposed between the bases, and which form a substrate mounting surface. A resistance heating element provided for at least one of the bases.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: July 24, 2007
    Assignee: NGK Insulators, Ltd.
    Inventors: Yoshinobu Goto, Hideyoshi Tsuruta
  • Publication number: 20070146961
    Abstract: An electrostatic chuck includes: a base body; an electrode formed on the base body and generating coulomb force; and a dielectric layer formed on the base body and electrode, having a plurality of projections on a first main face on the side supporting a substrate attracted by the coulomb force, and supporting the substrate on the upper surfaces of these projections. The projections are arranged at substantially uniform intervals. The surface roughness (Ra) of the projection upper faces is 0.5 ?m or smaller. The height of the projections is 5 to 20 ?m. The relation A1/2×B2>200 is satisfied where A (number/100 cm2) is the number of the projections per unit area of 100 cm2 in the first main face, and B (?m) is the height of the projections.
    Type: Application
    Filed: December 18, 2006
    Publication date: June 28, 2007
    Applicant: NGK Insulators, Ltd.
    Inventors: Ikuhisa Morioka, Hideyoshi Tsuruta, Tetsuya Kawajiri, Takeru Torigoe
  • Patent number: 7220320
    Abstract: The present invention provides members that are provided around a susceptor for mounting a semiconductor in a chamber for a semiconductor production system. Each member has a function of independently generating heat to heat the semiconductor, at least by radiation, and preferably, a heat generating element is embedded in each member.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: May 22, 2007
    Assignee: NGK Insulators, Ltd.
    Inventors: Yoshinobu Goto, Hideyoshi Tsuruta
  • Patent number: 7189946
    Abstract: A substrate heating device is provided, including a ceramic base plate having a heating surface on which a substrate is placed, resistance heating elements buried in the ceramic base plate corresponding to a plurality of zones into which the heating surface is divided, terminals respectively connected to the resistance heating elements, and lead wires respectively connected to the terminals and wired on an outer surface of the ceramic base plate other than the heating surface.
    Type: Grant
    Filed: April 8, 2005
    Date of Patent: March 13, 2007
    Assignee: NGK Insulators, Ltd.
    Inventors: Yoshinobu Goto, Hideyoshi Tsuruta
  • Patent number: 7157666
    Abstract: A member provided around a susceptor for mounting a semiconductor in a chamber of a semiconductor production system. The member has a face opposing the susceptor and a center line average surface roughness of the face opposing the susceptor is 0.5 ?m or less. Alternatively, the face opposing the susceptor has a thermal emissivity ? of 0.5 or lower. The member can also be a liner [4] having a supported face [4] whose area is not more than 20 percent of that of the face [4] opposing the susceptor.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: January 2, 2007
    Assignee: NGK Insulators, Ltd.
    Inventors: Yoshinobu Goto, Hideyoshi Tsuruta
  • Publication number: 20060279899
    Abstract: An electrostatic chuck includes; a base made of ceramics, in which an electrode generating electrostatic attractive force is embedded; a cooling member which contains metal; a bonding material which bonds the base and the cooling member to each other; a gas providing passage which penetrates the base, the bonding material, and the cooling member; and an engagement member and a bolt member, which are fixing members mechanically fixing the base and the cooling member to each other.
    Type: Application
    Filed: June 8, 2006
    Publication date: December 14, 2006
    Applicant: NGK Insulators, Ltd.
    Inventors: Yasufumi Aihara, Hideyoshi Tsuruta, Keiji Kawasaki
  • Publication number: 20060237442
    Abstract: The power-supplying member comprises: a first rod-shaped member connected to power-supplied object; a second rod-shaped member connected to power supply; and a thermal-function member, which is disposed between the first rod-shaped member and the second rod-shaped member, and which has a smaller axial cross section area and a larger surface area as compared to the first and second rod-shaped members.
    Type: Application
    Filed: April 19, 2006
    Publication date: October 26, 2006
    Applicant: NGK Insulators, Ltd.
    Inventors: Yoshinobu Goto, Hideyoshi Tsuruta
  • Patent number: 7126093
    Abstract: An object of the present invention is to provide a heating system having a ceramic heater and a supporting member supporting the back face of the heater, so that the cost of the supporting member can be reduced, the design change of the heater is made easier and excellent flatness of the heating face on use can be maintained. The heating system has a ceramic substrate 1 having a heating face 1a and a back face 1b, a heating means 4 for generating heat from the heating face 1a of the substrate 1, a metal supporting member 6 supporting the back face 1b of the substrate 1, and a heat insulating plate 5 provided between the back face 1b of the substrate 1 and the supporting member 6.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: October 24, 2006
    Assignee: NGK Insulators, Ltd.
    Inventors: Yoshinobu Goto, Hideyoshi Tsuruta