Patents by Inventor Joo-Ah Kang

Joo-Ah Kang 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: 7679966
    Abstract: A flash memory device and a read method thereof are provided. At a read operation, a sense node of a page buffer is developed while a bitline is developed and data of a selected memory cell is sensed based on the develop result of the sense node. For a develop period, voltage loss arising from the sense node is compensated fast and the compensated result is latched, which makes it possible to simplify the design and reduce a chip size.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: March 16, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Ah Kang, Jong Hwa Kim
  • Patent number: 7573751
    Abstract: A flash memory device includes memory cells, a common node, a sense node connected to a selected bit line, a first register connected to the common node, a second register connected to the common node and the sense node, a common sense circuit connected to the common node, the sense node, and a control node; a switch, and a pre-charge circuit connected to the control node and configured to pre-charge the control node.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: August 11, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Ah Kang, Jong-Hwa Kim
  • Patent number: 7535775
    Abstract: A page buffer may comprise of a latch connected to a sense node at a first contact point. The page buffer may also comprise of a sensing circuit connected to the sense node at a second contact point, the sensing circuit being configured to sense cell data of the sense node. The page buffer may also comprise of a switch circuit which electrically connects the first contact point with the second contact point after the first contact point is charged by the latch.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: May 19, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Ah Kang, Jong-Hwa Kim
  • Patent number: 7391649
    Abstract: In one aspect, a non-volatile memory device includes a non-volatile memory cell array and a page buffer. The page buffer includes a sense node selectively connected to a bit line of the memory cell array, a main latch circuit including first and second main latch nodes, where the first main latch node is selectively connected to the sense node, and a latch input node selectively connected to the first and second main latch nodes. The page buffer further includes a cache latch circuit including first and second cache latch nodes, a switching circuit which selectively connects the second cache latch node to the latch input node, and a shared sense circuit connected between to the latch input node and a reference potential. The shared sense circuit selectively connects the latch input node to the reference potential in response to a voltage of the sense node and a voltage of the first cache latch node.
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: June 24, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Ah Kang, Jong-Hwa Kim, Moo-Sung Kim
  • Publication number: 20070103472
    Abstract: A page buffer may comprise of a latch connected to a sense node at a first contact point. The page buffer may also comprise of a sensing circuit connected to the sense node at a second contact point, the sensing circuit being configured to sense cell data of the sense node. The page buffer may also comprise of a switch circuit which electrically connects the first contact point with the second contact point after the first contact point is charged by the latch.
    Type: Application
    Filed: October 26, 2006
    Publication date: May 10, 2007
    Inventors: Joo-Ah Kang, Jong-Hwa Kim
  • Publication number: 20070041247
    Abstract: A flash memory device is disclosed that comprises memory cells, a common node, a sense node connected to a selected bit line, a first register connected to the common node, and a second register connected to the common node and the sense node. The flash memory device further comprises a common sense circuit connected to the common node, the sense node, and a control node; a switch, and a pre-charge circuit connected to the control node and configured to pre-charge the control node.
    Type: Application
    Filed: February 6, 2006
    Publication date: February 22, 2007
    Inventors: Joo-Ah Kang, Jong-Hwa Kim
  • Publication number: 20070002631
    Abstract: In one aspect, a non-volatile memory device includes a non-volatile memory cell array and a page buffer. The page buffer includes a sense node selectively connected to a bit line of the memory cell array, a main latch circuit including first and second main latch nodes, where the first main latch node is selectively connected to the sense node, and a latch input node selectively connected to the first and second main latch nodes. The page buffer further includes a cache latch circuit including first and second cache latch nodes, a switching circuit which selectively connects the second cache latch node to the latch input node, and a shared sense circuit connected between to the latch input node and a reference potential. The shared sense circuit selectively connects the latch input node to the reference potential in response to a voltage of the sense node and a voltage of the first cache latch node.
    Type: Application
    Filed: May 3, 2006
    Publication date: January 4, 2007
    Inventors: Joo-Ah Kang, Jong-Hwa Kim, Moo-Sung Kim
  • Publication number: 20060291288
    Abstract: In a flash memory device following precharge, a bitline and a sense node are coupled and then developed. A voltage apparent at the sense node is detected to recognize a data value of a corresponding memory cell. For a develop period, a bitline-side capacitance is much higher than a capacitance between adjacent sense nodes.
    Type: Application
    Filed: February 6, 2006
    Publication date: December 28, 2006
    Inventors: Joo-Ah Kang, Jong-hwa Kim
  • Publication number: 20060274588
    Abstract: A flash memory device and a read method thereof are provided. At a read operation, a sense node of a page buffer is developed while a bitline is developed and data of a selected memory cell is sensed based on the develop result of the sense node. For a develop period, voltage loss arising from the sense node is compensated fast and the compensated result is latched, which makes it possible to simplify the design and reduce a chip size.
    Type: Application
    Filed: December 28, 2005
    Publication date: December 7, 2006
    Inventors: Joo-Ah Kang, Jong Kim
  • Patent number: 7109585
    Abstract: An integrated circuit device includes a semiconductor substrate having an interlayer insulating layer thereon and a first junction block embedded in the interlayer insulating layer. The first junction block includes a first plurality of conductive junction traces located side-by-side within the interlayer insulating layer and a corresponding first plurality of pairs of conductive vias connected to opposite ends of respective ones of the first plurality of conductive junction traces. The first junction block also includes a dummy conductive trace located adjacent the first plurality of conductive junction traces and a pair of dummy conductive vias connected to opposite ends of the dummy junction trace. The integrated circuit device further includes a plurality of upper metallization traces routed on the interlayer insulating layer.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: September 19, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Joo-Ah Kang, June Lee, In-Young Kim
  • Publication number: 20060011993
    Abstract: An integrated circuit device includes a semiconductor substrate having an interlayer insulating layer thereon and a first junction block embedded in the interlayer insulating layer. The first junction block includes a first plurality of conductive junction traces located side-by-side within the interlayer insulating layer and a corresponding first plurality of pairs of conductive vias connected to opposite ends of respective ones of the first plurality of conductive junction traces. The first junction block also includes a dummy conductive trace located adjacent the first plurality of conductive junction traces and a pair of dummy conductive vias connected to opposite ends of the dummy junction trace. The integrated circuit device further includes a plurality of upper metallization traces routed on the interlayer insulating layer.
    Type: Application
    Filed: December 22, 2004
    Publication date: January 19, 2006
    Inventors: Joo-Ah Kang, June Lee, In-Young Kim