Patents by Inventor Toyonori Eto

Toyonori Eto 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: 11069561
    Abstract: An electronic device comprises a dielectric structure, interconnect structures extending into the dielectric structure and having uppermost vertical boundaries above uppermost vertical boundaries of the dielectric structure, an additional barrier material covering surfaces of the interconnect structures above the uppermost vertical boundaries of the dielectric structure, an isolation material overlying the additional barrier material, and at least one air gap laterally intervening between at least two of the interconnect structures laterally-neighboring one another. Each of the interconnect structures comprises a conductive material, and a barrier material intervening between the conductive material and the dielectric structure. The at least one air gap vertically extends from a lower portion of the isolation material, through the additional barrier material, and into the dielectric structure. Electronic systems and method of forming an electronic device are also described.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: July 20, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Toyonori Eto, Kuo-Chen Wang
  • Publication number: 20200357680
    Abstract: An electronic device comprises a dielectric structure, interconnect structures extending into the dielectric structure and having uppermost vertical boundaries above uppermost vertical boundaries of the dielectric structure, an additional barrier material covering surfaces of the interconnect structures above the uppermost vertical boundaries of the dielectric structure, an isolation material overlying the additional barrier material, and at least one air gap laterally intervening between at least two of the interconnect structures laterally-neighboring one another. Each of the interconnect structures comprises a conductive material, and a barrier material intervening between the conductive material and the dielectric structure. The at least one air gap vertically extends from a lower portion of the isolation material, through the additional barrier material, and into the dielectric structure. Electronic systems and method of forming an electronic device are also described.
    Type: Application
    Filed: May 10, 2019
    Publication date: November 12, 2020
    Inventors: Toyonori Eto, Kuo-Chen Wang
  • Patent number: 8344484
    Abstract: A semiconductor device may include, but is not limited to: a semiconductor substrate having an element formation region and a dicing region; an element layer over the element formation region and the dicing region; and a multi-layered wiring structure over the dicing region. The multi-layered wiring structure extends upwardly from the element layer. The multi-layered wiring structure has a groove penetrating the multi-layered wiring structure.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: January 1, 2013
    Assignee: Elpida Memory, Inc.
    Inventor: Toyonori Eto
  • Publication number: 20110241177
    Abstract: A semiconductor includes a semiconductor substrate having a main face, the semiconductor device having a device region and a dicing line and a stack of insulating layers over the semiconductor substrate. There is a multi-level interconnection structure in the stack of insulating layers. A passivation film covers the semiconductor substrate, the passivation film having an opening. The stack of insulating layers has a groove which extends from the opening and penetrates at least one of the insulating layers, the groove is positioned between the device region and the dicing line, and the groove is narrower in width than the opening.
    Type: Application
    Filed: June 8, 2011
    Publication date: October 6, 2011
    Applicant: ELPIDA MEMORY, INC.
    Inventor: Toyonori Eto
  • Publication number: 20110233625
    Abstract: A semiconductor device includes a semiconductor chip; and a scribe line disposed in an adjacent way to and around the semiconductor chip. The scribe line comprises an interlayer insulating film and an accessory. The accessory comprises a first portion with a layer shape formed on the interlayer insulating film and a second portion extending downward from the first portion into the interlayer insulating film in a thickness direction thereof.
    Type: Application
    Filed: March 22, 2011
    Publication date: September 29, 2011
    Applicant: ELPIDA MEMORY, INC.
    Inventor: Toyonori ETO
  • Patent number: 7977232
    Abstract: A semiconductor wafer may include, but is not limited to, the following elements. A semiconductor substrate has a device region and a dicing region. A stack of inter-layer insulators may extend over the device region and the dicing region. Multi-level interconnections may be disposed in the stack of inter-layer insulators. The multi-level interconnections may extend in the device region. An electrode layer may be disposed over the stack of inter-layer insulators. The electrode layer may extend in the device region. The electrode layer may cover the multi-level interconnections. A cracking stopper groove may be disposed in the dicing region. The cracking stopper groove may be positioned outside the device region.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: July 12, 2011
    Assignee: Elpida Memory, Inc.
    Inventor: Toyonori Eto
  • Publication number: 20110156263
    Abstract: A semiconductor device may include, but is not limited to: a semiconductor substrate having an element formation region and a dicing region; an element layer over the element formation region and the dicing region; and a multi-layered wiring structure over the dicing region. The multi-layered wiring structure extends upwardly from the element layer. The multi-layered wiring structure has a groove penetrating the multi-layered wiring structure.
    Type: Application
    Filed: December 15, 2010
    Publication date: June 30, 2011
    Inventor: Toyonori ETO
  • Patent number: 7897474
    Abstract: A method of forming a semiconductor device may include, but is not limited to, the following processes. A second insulating film may be formed over a first insulating film. At least one through-hole may be formed, which penetrates the first and second insulating films. At least one first electrode may be formed, which extends at least along the side wall of the at least one through-hole. The first inter-layer insulator may be removed, while using the second insulating film as a temporary supporter that supports the at least one first electrode. At least one permanent supporter may be formed, which supports the at least one first electrode. The second insulating film as the temporary supporter may be removed, while leaving the at least one permanent supporter to support the at least one first electrode.
    Type: Grant
    Filed: December 3, 2008
    Date of Patent: March 1, 2011
    Assignee: Elpida Memory, Inc.
    Inventor: Toyonori Eto
  • Patent number: 7723202
    Abstract: A method for forming a semiconductor device includes a plurality of crown-type capacitors in a capacitor-receiving insulating film, wherein bottom electrodes of the capacitors have an insulating spacer between each two of the bottom electrodes. The insulating spacer is formed by removing a hard mask used as an etching mask for forming cylindrical holes receiving therein capacitors including the bottom electrodes.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: May 25, 2010
    Assignee: Elpida Memory, Inc.
    Inventor: Toyonori Eto
  • Publication number: 20090146260
    Abstract: A semiconductor wafer may include, but is not limited to, the following elements. A semiconductor substrate has a device region and a dicing region. A stack of inter-layer insulators may extend over the device region and the dicing region. Multi-level interconnections may be disposed in the stack of inter-layer insulators. The multi-level interconnections may extend in the device region. An electrode layer may be disposed over the stack of inter-layer insulators. The electrode layer may extend in the device region. The electrode layer may cover the multi-level interconnections. A cracking stopper groove may be disposed in the dicing region. The cracking stopper groove may be positioned outside the device region.
    Type: Application
    Filed: December 2, 2008
    Publication date: June 11, 2009
    Applicant: Elpida Memory, Inc.
    Inventor: Toyonori Eto
  • Publication number: 20090146256
    Abstract: A method of forming a semiconductor device may include, but is not limited to, the following processes. A second insulating film may be formed over a first insulating film. At least one through-hole may be formed, which penetrates the first and second insulating films. At least one first electrode may be formed, which extends at least along the side wall of the at least one through-hole. The first inter-layer insulator may be removed, while using the second insulating film as a temporary supporter that supports the at least one first electrode. At least one permanent supporter may be formed, which supports the at least one first electrode. The second insulating film as the temporary supporter may be removed, while leaving the at least one permanent supporter to support the at least one first electrode.
    Type: Application
    Filed: December 3, 2008
    Publication date: June 11, 2009
    Applicant: ELPIDA MEMORY, INC.
    Inventor: Toyonori ETO
  • Publication number: 20080009119
    Abstract: A method for forming a semiconductor device includes a plurality of crown-type capacitors in a capacitor-receiving insulating film, wherein bottom electrodes of the capacitors have an insulating spacer between each two of the bottom electrodes. The insulating spacer is formed by removing a hard mask used as an etching mask for forming cylindrical holes receiving therein capacitors including the bottom electrodes.
    Type: Application
    Filed: July 6, 2007
    Publication date: January 10, 2008
    Applicant: Elpida Memory, Inc.
    Inventor: Toyonori Eto