With Fets On Different Levels, E.g., 3d Rom (epo) Patents (Class 257/E21.677)
  • Patent number: 9524984
    Abstract: The present disclosure may provide a semiconductor device with a low manufacturing degree of difficulty and an enhanced performance. The device may include conductive layers and insulating layers, alternately stacked, each of the insulating layers being thinner than each of the conductive layers; a channel layer passing through the conductive layers and the insulating layers; a data storage layer surrounding a side-wall of the channel layer; and first charge blocking patterns, each of the first charge blocking patterns interposed between the conductive layers and the insulating layers and between the data storage layer and the conductive layers.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: December 20, 2016
    Assignee: SK hynix Inc.
    Inventor: Hee Youl Lee
  • Patent number: 8901635
    Abstract: According to one embodiment, a semiconductor memory device includes a stacked body, a semiconductor pillar, an insulating film, and a charge storage film. The stacked body includes a plurality of electrode films stacked with an inter-layer insulating film provided between the electrode films. The semiconductor pillar pierces the stacked body. The insulating film is provided between the semiconductor pillar and the electrode films on an outer side of the semiconductor pillar with a gap interposed. The charge storage film is provided between the insulating film and the electrode films. The semiconductor pillar includes germanium. An upper end portion of the semiconductor pillar is supported by an interconnect provided above the stacked body.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: December 2, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Jun Fujiki, Yoshiaki Fukuzumi, Hideaki Aochi, Tomoko Fujiwara
  • Patent number: 8772859
    Abstract: According to one embodiment, a semiconductor memory device includes a substrate, a first stacked body, a second stacked body, a memory film, a gate insulating film, and a channel body. The first stacked body has a plurality of electrode layers and a plurality of first insulating layers. The second stacked body has a selector gate and a second insulating layer. The memory film is provided on a sidewall of a first hole. The gate insulating film is provided on a sidewall of a second hole. The channel body is provided on an inner side of the memory film and on an inner side of the gate insulating film. A step part is provided between a side face of the selector gate and the second insulating layer. A region positioned near a top end of the selector gate of the channel body is silicided.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: July 8, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Masaaki Higuchi
  • Patent number: 8486791
    Abstract: Technology is described herein for manufacturing a three-dimensional 3D stacked memory structure having multiple layers of single crystal silicon or other semiconductor. The multiple layers of single crystal semiconductor are suitable for implementing multiple levels of high performance memory cells.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: July 16, 2013
    Assignee: Macronix International Co., Ltd.
    Inventor: Hang-Ting Lue
  • Patent number: 8377817
    Abstract: Provided is a three dimensional semiconductor device. The device may include mold layers vertically and sequentially stacked, a conductive pattern between the stacked mold layers, a plugging pattern vertically penetrating the stacked mold layers, an intermediate pattern between the conductive pattern and the plugging pattern, and protective layer patterns between the mold layers and the plugging pattern, wherein the protective layer patterns are separated by the intermediate pattern.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: February 19, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chanjin Park, Kihyun Hwang, Dongchul Yoo, Junkyu Yang, Gyungjin Min, Yoochul Kong, Hanmei Choi
  • Patent number: 8247860
    Abstract: A nonvolatile semiconductor memory device includes: a substrate; a stacked body with a plurality of dielectric films and electrode films alternately stacked therein, the stacked body being provided on the substrate and having a step in its end portion for each of the electrode films; an interlayer dielectric film burying the end portion of the stacked body; a plurality of semiconductor pillars extending in the stacking direction of the stacked body and penetrating through a center portion of the stacked body; a charge storage layer provided between one of the electrode films and one of the semiconductor pillars; and a plug buried in the interlayer dielectric film and connected to a portion of each of the electrode films constituting the step, a portion of each of the dielectric films in the center portion having a larger thickness than a portion of each of the dielectric films in the end portion.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: August 21, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masao Iwase, Tadashi Iguchi
  • Patent number: 7972955
    Abstract: Provided are a three dimensional semiconductor memory device and a method of fabricating the same. The method includes forming a stepwise structure by using mask patterns and a sacrificial mask pattern formed on the mask patterns as a consumable etch mask.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: July 5, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sukhun Choi, Kyunghyun Kim, ChangSup Mun, Byoungkeun Son
  • Patent number: 7915163
    Abstract: The invention provides for polysilicon vias connecting conductive polysilicon layers formed at different heights. Polysilicon vias are advantageously used in a monolithic three dimensional memory array of charge storage transistors. Polysilicon vias according to the present invention can be used, for example, to connect the channel layer of a first device level of charge storage transistor memory cells to the channel layer of a second device layer of such cells formed above the first device level. Similarly, vias according to the present invention can be used to connect the wordline of a first device level of charge storage transistor memory cells to the channel layer of a second device layer of such cells.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: March 29, 2011
    Assignee: SanDisk 3D LLC
    Inventors: Michael W. Konevecki, Usha Raghuram, Maitreyee Mahajani, Sucheta Nallamothu, Andrew J. Walker, Tanmay Kumar
  • Patent number: 7915164
    Abstract: The invention provides for polysilicon vias connecting conductive polysilicon layers formed at different heights. Polysilicon vias are advantageously used in a monolithic three dimensional memory array of charge storage transistors. Polysilicon vias according to the present invention can be used, for example, to connect the channel layer of a first device level of charge storage transistor memory cells to the channel layer of a second device layer of such cells formed above the first device level. Similarly, vias according to the present invention can be used to connect the wordline of a first device level of charge storage transistor memory cells to the channel layer of a second device layer of such cells.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: March 29, 2011
    Assignee: SanDisk 3D LLC
    Inventors: Michael W. Konevecki, Usha Raghuram, Maitreyee Mahajani, Sucheta Nallamothu, Andrew J. Walker, Tanmay Kumar
  • Patent number: 7626257
    Abstract: Vertically stacked integrated circuits and methods of fabrication thereof are disclosed. Deep vias that provide vertical electrical connection for vertically stacked integrated circuits are formed early in the manufacturing process, before integrated circuits are bonded together to form a three dimensional integrated circuit (3D-IC).
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: December 1, 2009
    Assignee: Infineon Technologies AG
    Inventor: Andreas Knorr
  • Patent number: 7442997
    Abstract: The present invention discloses a three-dimensional memory (3D-M) with polarized 3D-ROM (three-dimensional read-only memory) cells. Polarized 3D-ROM can ensure a larger unit array and therefore, a better integratibility. The present invention further discloses a 3D-M with seamless 3D-ROM cells. Seamless 3D-ROM can ensure a better manufacturing yield.
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: October 28, 2008
    Inventor: Guobiao Zhang