Patents Examined by Siangluai Mang
  • Patent number: 11792983
    Abstract: A method used in forming a memory array comprising strings of memory cells comprises forming an upper stack directly above a lower stack. The lower stack comprises vertically-alternating lower-first-tiers and lower-second-tiers. The upper stack comprises vertically-alternating upper-first-tiers and upper-second-tiers. Lower channel openings extend through the lower-first-tiers and the lowers-second-tiers. The lower channel openings have sacrificial material therein. An upper of the lower-first-tiers or a lower of the upper-first-tiers comprises non-stoichiometric silicon nitride comprising (a) or (b), where (a): a nitrogen-to-silicon atomic ratio greater than 1.33 and less than 1.5; and (b): a nitrogen-to-silicon atomic ratio greater than or equal to 1.0 and less than 1.33. A higher of the upper-first-tiers that is above said lower upper-first-tier comprises silicon nitride not having either the (a) or the (b).
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: October 17, 2023
    Assignee: Micron Technology, Inc.
    Inventors: Daniel Billingsley, Jordan D. Greenlee, John D. Hopkins, Yongjun Jeff Hu, Swapnil Lengade
  • Patent number: 11791407
    Abstract: A semiconductor transistor structure with reduced contact resistance includes a substrate, a channel layer on the substrate, a barrier layer on the channel layer, a two-dimensional electron gas (2DEG) layer at an interface between the barrier layer and the channel layer, and a recess in a contact region. The recess penetrates through the barrier layer and extends into the channel layer. An Ohmic contact metal is disposed in the recess. The Ohmic contact metal is in direct contact with a vertical side surface of the barrier layer in the recess and in direct contact with an inclined side surface of the 2DEG layer and the channel layer in the recess.
    Type: Grant
    Filed: May 26, 2021
    Date of Patent: October 17, 2023
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Chih-Tung Yeh, Chun-Liang Hou, Wen-Jung Liao, Ruey-Chyr Lee
  • Patent number: 11784054
    Abstract: An etching method for performing side-etching of silicon germanium layers of a substrate having alternating silicon layers and the silicon germanium layers formed thereon is provided. The method includes modifying surfaces of residuals by supplying a plasmarized gas containing hydrogen to the residuals on exposed end surfaces of the silicon germanium layers, and performing side-etching on the silicon germanium layers by supplying a fluorine-containing gas to the silicon germanium layers.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: October 10, 2023
    Assignee: Tokyo Electron Limited
    Inventors: Nobuhiro Takahashi, Kazuhito Miyata, Yasuo Asada
  • Patent number: 11756988
    Abstract: A semiconductor structure includes a trench capacitor, a stacked capacitor, a first electrode plate, and a second electrode plate. The trench capacitor is located in a substrate, in which the trench capacitor has a first conductive structure and a first dielectric structure in contact with the first conductive structure. The stacked capacitor has a second conductive structure and a second dielectric structure in contact with the second conductive structure, in which the stacked capacitor is at least partially aligned with the trench capacitor in an axis vertical to a top surface of the substrate, and the first and second conductive structures are electrically connected. The trench capacitor and the stacked capacitor are electrically connected in parallel between the first and second electrode plates.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: September 12, 2023
    Assignee: NANYA TECHNOLOGY CORPORATION
    Inventors: Ting-Cih Kang, Hsih-Yang Chiu
  • Patent number: 11744069
    Abstract: Integrated circuitry comprising a memory array comprises strings of memory cells comprising laterally-spaced memory blocks that individually comprise a first vertical stack comprising alternating insulative tiers and conductive tiers. Strings of memory cells comprise channel-material strings that extend through the insulative tiers and the conductive tiers. The conductive tiers individually comprise a horizontally-elongated conductive line. A second vertical stack is aside the first vertical stack. The second vertical stack comprises an upper portion and a lower portion. The upper portion comprises alternating first insulating tiers and second insulating tiers. The lower portion comprises a lowest insulator tier directly above conductor material of a conductor tier. The lowest insulator tier comprises solid carbon and nitrogen-containing material. An immediately-adjacent tier is directly above the solid carbon and nitrogen-containing material of the lowest insulator tier.
    Type: Grant
    Filed: September 24, 2020
    Date of Patent: August 29, 2023
    Assignee: Micron Technology, Inc.
    Inventors: John D. Hopkins, Alyssa N. Scarbrough
  • Patent number: 11737276
    Abstract: A method of manufacturing a semiconductor device according to the present disclosure includes forming a stack by alternately stacking insulating films and sacrificial films on a substrate; forming, in the stack, a through-hole extending in a thickness direction of the stack; forming a block insulating film, a charge trapping film, a tunnel insulating film, and a channel film on an inner surface of the through-hole in this order; forming, in the stack, a slit extending in the thickness direction of the stack separately from the through-hole; removing the sacrificial films through the slit so as to form a recess between adjacent insulating films; forming a first metal oxide film on an inner surface of the recess; forming, on the first metal oxide film, a second metal oxide film having a crystallization temperature lower than that of the first metal oxide film; and filling the recess with an electrode layer.
    Type: Grant
    Filed: May 27, 2021
    Date of Patent: August 22, 2023
    Assignee: Tokyo Electron Limited
    Inventors: Sara Otsuki, Genji Nakamura, Muneyuki Otani, Kazuya Takahashi
  • Patent number: 11728448
    Abstract: The invention relates to a method for fabricating a semiconductor device. The method includes steps of providing a cavity structure, the cavity structure including a seed area including a seed material. The method further includes growing, within the cavity structure, a first embedding layer in a first growth direction from a seed surface of the seed material. The method includes further steps of removing the seed material, growing, in a second growth direction, from a seed surface of the first embedding layer, a quantum dot structure and growing, within the cavity structure, on a surface of the quantum dot structure, a second embedding layer in the second growth direction. The second growth direction is different from the first growth direction. The invention further relates to devices obtainable by such a method.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: August 15, 2023
    Assignee: International Business Machines Corporation
    Inventors: Markus Scherrer, Kirsten Emilie Moselund, Preksha Tiwari, Noelia Vico Trivino
  • Patent number: 11700775
    Abstract: A semiconductor device includes a substrate, a first dielectric layer, a second dielectric layer, and a third dielectric layer. The first dielectric layer is disposed on the substrate, around a first metal interconnection. The second dielectric layer is disposed on the first dielectric layer, around a via and a second metal interconnection. The second metal interconnection directly contacts the first metal interconnection. The third dielectric layer is disposed on the second dielectric layer, around a first magnetic tunneling junction (MTJ) structure and a third metal interconnection. The third metal interconnection directly contacts the first MTJ structure and the second metal interconnection, and the first MTJ structure directly contacts the via.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: July 11, 2023
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Hui-Lin Wang, Po-Kai Hsu, Ju-Chun Fan, Yi-Yu Lin, Ching-Hua Hsu, Hung-Yueh Chen
  • Patent number: 11688610
    Abstract: A method for forming a semiconductor structure includes forming a pattern having first and second line features extending in a first direction on a substrate. After depositing a photoresist layer on the substrate to cover the pattern, the photoresist layer is patterned to form a cut pattern including first and second cut features exposing portions of the respective first and second line features. In a top view, at least one of the first and second cut features is asymmetrically arranged with respect to a central axis of a corresponding first or second line feature. At least one angled ion implantation is performed to enlarge the first and second cut features in at least one direction perpendicular to the first direction. The portions of the first and second line features exposed by the respective first and second cut features are then removed.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: June 27, 2023
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Tzung-Hua Lin, Yi-Ko Chen, Chia-Chu Liu, Hua-Tai Lin
  • Patent number: 11678534
    Abstract: A display device includes a 1-1st wiring including a 1-1st end at an end portion thereof in a first direction, a 1-2nd wiring extending in a second direction opposite to the first direction and including a 1-2nd end that is apart from the 1-1st end, a second wiring that is apart from the 1-1st wiring and the 1-2nd wiring, a first bridge wiring in contact with the 1-1st wiring and the 1-2nd wiring and electrically connecting the 1-1st wiring to the 1-2nd wiring, and a third wiring extending in the first direction and disposed such that the second wiring is between the 1-1st wiring and the third wiring. The first bridge wiring has a convex shape in a direction opposite to a direction from the 1-1st wiring and the 1-2nd wiring to the second wiring.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: June 13, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hyeonbum Lee
  • Patent number: 11665972
    Abstract: A semiconductor structure and a method for forming the semiconductor structure are provided. The semiconductor structure includes a substrate, and a conductive layer in the substrate and having a surface exposed by the substrate. A groove is formed in the substrate and adjacent to the conductive layer, and a sidewall of the groove exposes a portion of a sidewall surface of the conductive layer. The semiconductor structure also includes a lower electrode layer located in the groove and on a top surface of the conductive layer. The lower electrode layer covers the top surface and the portion of the sidewall surface of the conductive layer.
    Type: Grant
    Filed: September 26, 2020
    Date of Patent: May 30, 2023
    Assignees: SEMICONDUCTOR MANUFACTURING INTERNATIONAL (SHANGHAI) CORPORATION, SEMICONDUCTOR MANUFACTURING INTERNATIONAL (BEIJING) CORPORATION
    Inventor: Ming Zhou
  • Patent number: 11665949
    Abstract: A display panel may include a first display substrate and a second display substrate on the first display substrate. The second display substrate may include a plurality of pixel regions and a peripheral region adjacent to the pixel regions. The second display substrate may include a first color control pattern configured to emit light of a first color, a second color control pattern spaced apart from the first color control pattern in a first direction and configured to emit light of a second color different from the first color, and first and second light-blocking patterns in the peripheral region between the first and second color control patterns. The first and second light-blocking patterns may be spaced apart from each other, in a second direction crossing the first direction, to define a gap region.
    Type: Grant
    Filed: October 8, 2020
    Date of Patent: May 30, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kisoo Park, Junghyun Kwon, Youngmin Kim, Hae Il Park, Seon-Tae Yoon, Hyeseung Lee
  • Patent number: 11646229
    Abstract: A processing method of a device wafer includes a mask coating step of coating a front surface of the device wafer with a water-soluble resin, a mask forming step of applying a laser beam along each division line, forming a groove, and removing a protective mask and a functional layer to expose a substrate, a plasma etching step of forming a division groove that divides the substrate along the groove by supplying a gas in a plasma condition, an expanding step of expanding a protective tape in a plane direction to expand a width of the division groove, an adhesive film dividing step of applying a laser beam along the division groove to divide the adhesive film that has been exposed due to the formation of the division groove, and a cleaning step of cleaning and removing the water-soluble resin.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: May 9, 2023
    Assignee: DISCO CORPORATION
    Inventor: Minoru Suzuki