Patents by Inventor Teruo OKINA

Teruo OKINA 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: 11088076
    Abstract: A semiconductor die includes at least one first semiconductor device located on a first substrate, a first pad-level dielectric layer which is a diffusion barrier overlying the at least one first semiconductor device, and first bonding structures including a respective first metallic bonding pad embedded in the first pad-level dielectric layer. Each of the first bonding structures includes a metallic fill material portion having a horizontal distal surface that is located within a horizontal plane including a horizontal distal surface of the first pad-level dielectric layer, and a metallic liner laterally surrounding the metallic fill material portion and vertically spaced from the horizontal plane by a vertical recess distance.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: August 10, 2021
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventor: Teruo Okina
  • Publication number: 20210202382
    Abstract: A semiconductor die includes at least one first semiconductor device located on a first substrate, a first pad-level dielectric layer which is a diffusion barrier overlying the at least one first semiconductor device, and first bonding structures including a respective first metallic bonding pad embedded in the first pad-level dielectric layer. Each of the first bonding structures includes a metallic fill material portion having a horizontal distal surface that is located within a horizontal plane including a horizontal distal surface of the first pad-level dielectric layer, and a metallic liner laterally surrounding the metallic fill material portion and vertically spaced from the horizontal plane by a vertical recess distance.
    Type: Application
    Filed: December 27, 2019
    Publication date: July 1, 2021
    Inventor: Teruo OKINA
  • Publication number: 20210134819
    Abstract: A method of forming a device structure includes forming a memory-level structure including a three-dimensional memory device over a front side surface of a semiconductor substrate, forming memory-side dielectric material layers over the memory-level structure, bonding a handle substrate to the memory-side dielectric material layers, thinning the semiconductor substrate while the handle substrate is attached to the memory-side dielectric material layers, forming a driver circuit including field effect transistors on a backside semiconductor surface of the semiconductor substrate after thinning the semiconductor substrate, and removing the handle substrate from the memory-side dielectric material layers.
    Type: Application
    Filed: October 31, 2019
    Publication date: May 6, 2021
    Inventors: Yanli ZHANG, Johann Alsmeier, Teruo Okina
  • Publication number: 20210091063
    Abstract: A memory die includes an alternating stack of insulating layers and electrically conductive layers, memory stack structures extending through the alternating stack, and each of the memory stack structures includes a respective vertical semiconductor channel and a respective memory film, drain regions located at a first end of a respective one of the vertical semiconductor channels, and a source layer having a first surface and a second surface. The first surface is located at a second end of each of the vertical semiconductor channels, and a semiconductor wafer is not located over the second surface of the source layer.
    Type: Application
    Filed: December 2, 2020
    Publication date: March 25, 2021
    Inventors: Takeki NINOMIYA, Teruo OKINA
  • Publication number: 20200258817
    Abstract: A three-dimensional memory device includes an alternating stack of insulating layers and electrically conductive layers located over a carrier substrate. Memory stack structures vertically extend through the alternating stack. Each memory stack structure includes a respective vertical semiconductor channel and a respective memory film. A pass-through via structure vertically extends through a dielectric material portion that is adjacent to the alternating stack. The memory die can be bonded to a logic die containing peripheral circuitry for supporting operations of memory cells within the memory die. A distal end of each of the vertical semiconductor channels is physically exposed by removing the carrier substrate. A source layer is formed directly on the distal end each of the vertical semiconductor channels. A backside bonding pad or bonding wire is formed to be electrically connected to the pass-through via structure.
    Type: Application
    Filed: March 25, 2020
    Publication date: August 13, 2020
    Inventors: Teruo OKINA, Akio NISHIDA, James KAI
  • Publication number: 20200258816
    Abstract: A three-dimensional memory device includes an alternating stack of insulating layers and electrically conductive layers located over a carrier substrate. Memory stack structures vertically extend through the alternating stack. Each memory stack structure includes a respective vertical semiconductor channel and a respective memory film. A pass-through via structure vertically extends through a dielectric material portion that is adjacent to the alternating stack. The memory die can be bonded to a logic die containing peripheral circuitry for supporting operations of memory cells within the memory die. A distal end of each of the vertical semiconductor channels is physically exposed by removing the carrier substrate. A source layer is formed directly on the distal end each of the vertical semiconductor channels. A backside bonding pad or bonding wire is formed to be electrically connected to the pass-through via structure.
    Type: Application
    Filed: March 25, 2020
    Publication date: August 13, 2020
    Inventors: Teruo OKINA, Akio NISHIDA, James KAI