Patents by Inventor Kwang Myoung Rho

Kwang Myoung Rho 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).

  • Publication number: 20230378135
    Abstract: A stacked integrated circuit includes a first chip including a first area and a second area that are disposed to be substantially symmetrical to each other in relation to a first rotating axis. The first area includes a first through via set and a first front pad set that are connected by using a first connection method. The second area includes a second through via set and a second front pad set that are connected by using a second connection method. The first through via set and the second through via set are disposed to be substantially symmetrical to each other in relation to the first rotating axis. The first front pad set and the second front pad set are disposed to be substantially symmetrical to each other in relation to the first rotating axis.
    Type: Application
    Filed: October 31, 2022
    Publication date: November 23, 2023
    Applicant: SK hynix Inc.
    Inventors: Dong Uk LEE, Kwang Myoung RHO, Choung Ki SONG, Seung Han OAK, Woo Yeong CHO
  • Patent number: 10490274
    Abstract: The semiconductor memory includes a plurality of word lines; and a plurality of columns including a plurality of resistive storage cells corresponding to the plurality of word lines, the plurality of columns being divided into a plurality of pages each having one or more columns; a memory circuit coupled to the semiconductor memory to sense data stored in the resistive storage cells; and a memory control circuit coupled to the semiconductor memory and the memory circuit to control sensing of the stored data by the memory circuit to, in a read operation, sense data of resistive storage cells included in a selected page by continuously active-precharging one or more word lines among the plurality of word lines in a period in which the selected page among the plurality of pages is activated.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: November 26, 2019
    Assignee: SK hynix Inc.
    Inventor: Kwang-Myoung Rho
  • Publication number: 20180366190
    Abstract: The semiconductor memory includes a plurality of word lines; and a plurality of columns including a plurality of resistive storage cells corresponding to the plurality of word lines, the plurality of columns being divided into a plurality of pages each having one or more columns; a memory circuit coupled to the semiconductor memory to sense data stored in the resistive storage cells; and a memory control circuit coupled to the semiconductor memory and the memory circuit to control sensing of the stored data by the memory circuit to, in a read operation, sense data of resistive storage cells included in a selected page by continuously active-precharging one or more word lines among the plurality of word lines in a period in which the selected page among the plurality of pages is activated.
    Type: Application
    Filed: August 27, 2018
    Publication date: December 20, 2018
    Inventor: Kwang-Myoung Rho
  • Patent number: 10121537
    Abstract: An electronic device includes a semiconductor memory that includes: resistive storage cells; a reference resistance cell; a comparison block electrically coupled to the resistive storage cells and the reference resistance cell through first and second input terminals, to compare a cell current flowing through the first input terminal and a reference current flowing through the second input terminal; a first clamp part to control a maximum current amount of the cell current depending on a voltage level of a first node; a second clamp part to control a maximum current amount of the reference current depending on the voltage level of the first node; a voltage stabilization block to stabilize a voltage of the first node during a charging or a discharging period; and a switching part electrically coupled with the first node and the voltage stabilization block in the charging period or the discharging period.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: November 6, 2018
    Assignee: SK hynix Inc.
    Inventor: Kwang-Myoung Rho
  • Patent number: 10062436
    Abstract: The semiconductor memory includes a plurality of word lines; and a plurality of columns including a plurality of resistive storage cells corresponding to the plurality of word lines, the plurality of columns being divided into a plurality of pages each having one or more columns; a memory circuit coupled to the semiconductor memory to sense data stored in the resistive storage cells; and a memory control circuit coupled to the semiconductor memory and the memory circuit to control sensing of the stored data by the memory circuit to, in a read operation, sense data of resistive storage cells included in a selected page by continuously active-precharging one or more word lines among the plurality of word lines in a period in which the selected page among the plurality of pages is activated.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: August 28, 2018
    Assignee: SK hynix Inc.
    Inventor: Kwang-Myoung Rho
  • Publication number: 20180158523
    Abstract: An electronic device includes a semiconductor memory that includes: resistive storage cells; a reference resistance cell; a comparison block electrically coupled to the resistive storage cells and the reference resistance cell through first and second input terminals, to compare a cell current flowing through the first input terminal and a reference current flowing through the second input terminal; a first clamp part to control a maximum current amount of the cell current depending on a voltage level of a first node; a second clamp part to control a maximum current amount of the reference current depending on the voltage level of the first node; a voltage stabilization block to stabilize a voltage of the first node during a charging or a discharging period; and a switching part electrically coupled with the first node and the voltage stabilization block in the charging period or the discharging period.
    Type: Application
    Filed: September 14, 2017
    Publication date: June 7, 2018
    Inventor: Kwang-Myoung Rho
  • Publication number: 20170236568
    Abstract: The semiconductor memory includes a plurality of word lines; and a plurality of columns including a plurality of resistive storage cells corresponding to the plurality of word lines, the plurality of columns being divided into a plurality of pages each having one or more columns; a memory circuit coupled to the semiconductor memory to sense data stored in the resistive storage cells; and a memory control circuit coupled to the semiconductor memory and the memory circuit to control sensing of the stored data by the memory circuit to, in a read operation, sense data of resistive storage cells included in a selected page by continuously active-precharging one or more word lines among the plurality of word lines in a period in which the selected page among the plurality of pages is activated.
    Type: Application
    Filed: October 12, 2016
    Publication date: August 17, 2017
    Inventor: Kwang-Myoung Rho
  • Patent number: 9105331
    Abstract: A semiconductor memory apparatus includes a resistive memory cell coupled between a bit line and a bit line bar; a control unit configured to couple the bit line to a first node and apply a reference voltage to a second node in response to a first sense amplifier enable signal and a second sense amplifier enable signal; a data output sense amplifier configured to sense and amplify a voltage of the first node and a voltage of the second node; a data transfer unit configured to couple the first and second nodes to a data line and a data line bar in response to a column select signal; and a data input unit configured to drive the bit line and the bit line bar according to voltage levels of the first and second nodes in response to a write enable signal.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: August 11, 2015
    Assignee: SK Hynix Inc.
    Inventor: Kwang Myoung Rho
  • Patent number: 8811059
    Abstract: Provided is a resistive memory apparatus including a plurality of memory areas each including a main memory cell array coupled to a plurality of word lines and a reference cell array coupled to a plurality of reference word lines. Each of the memory areas shares a bit line driver/sinker with an adjacent memory area.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: August 19, 2014
    Assignee: SK Hynix Inc.
    Inventor: Kwang Myoung Rho
  • Publication number: 20140098621
    Abstract: A semiconductor memory device includes: a variable delay for delaying a delay locked loop (DLL) clock by a predetermined delay time to output a delayed DLL clock; an output driver for outputting data and data strobe signal in response to the delayed DLL clock; and a calibration controller for controlling the predetermined delay time of the variable delay in response to output AC parameters.
    Type: Application
    Filed: December 9, 2013
    Publication date: April 10, 2014
    Applicant: 658868 N.B. Inc.
    Inventors: Young-Hoon OH, Kwang-Myoung RHO
  • Publication number: 20140003129
    Abstract: A semiconductor memory apparatus includes a resistive memory cell coupled between a bit line and a bit line bar; a control unit configured to couple the bit line to a first node and apply a reference voltage to a second node in response to a first sense amplifier enable signal and a second sense amplifier enable signal; a data output sense amplifier configured to sense and amplify a voltage of the first node and a voltage of the second node; a data transfer unit configured to couple the first and second nodes to a data line and a data line bar in response to a column select signal; and a data input unit configured to drive the bit line and the bit line bar according to voltage levels of the first and second nodes in response to a write enable signal.
    Type: Application
    Filed: March 18, 2013
    Publication date: January 2, 2014
    Applicant: SK HYNIX INC.
    Inventor: Kwang Myoung RHO
  • Publication number: 20130094277
    Abstract: Provided is a resistive memory apparatus including a plurality of memory areas each including a main memory cell array coupled to a plurality of word lines and a reference cell array coupled to a plurality of reference word lines. Each of the memory areas shares a bit line driver/sinker with an adjacent memory area.
    Type: Application
    Filed: December 28, 2011
    Publication date: April 18, 2013
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventor: Kwang Myoung RHO
  • Patent number: 8400824
    Abstract: A non-volatile memory and method for controlling the same prevents a faulty operation from being generated in a read operation, resulting in increase in operation reliability. The non-volatile memory device includes a cell array configured to include a plurality of unit cells in which a read or write operation of data is achieved in a unit cell in response to a variation of resistance, a reference cell array configured to include a plurality of reference cells, each of which has the same structure as that of the unit cell, a global reference current generation circuit configured to generate a global reference current corresponding to a position of the reference cell so as to verify data stored in the reference cell array, and a sense-amplifier configured to compare a current flowing in the reference cell array with the global reference current during a write verification operation of the reference cell array, and thus sense data.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: March 19, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventor: Kwang Myoung Rho
  • Patent number: 8225417
    Abstract: A circuit for controlling a signal line transmitting data. The circuit includes a data level controller that, when the level of the data transmitted through the signal line is changed, controls the level of the data to be lower than an external power supply voltage level and higher than a ground voltage level after a predetermined time.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: July 17, 2012
    Assignee: SK hynix, Inc.
    Inventors: Kwang-Myoung Rho, Jae-Jin Lee
  • Publication number: 20120147664
    Abstract: A non-volatile memory and method for controlling the same prevents a faulty operation from being generated in a read operation, resulting in increase in operation reliability. The non-volatile memory device includes a cell array configured to include a plurality of unit cells in which a read or write operation of data is achieved in a unit cell in response to a variation of resistance, a reference cell array configured to include a plurality of reference cells, each of which has the same structure as that of the unit cell, a global reference current generation circuit configured to generate a global reference current corresponding to a position of the reference cell so as to verify data stored in the reference cell array, and a sense-amplifier configured to compare a current flowing in the reference cell array with the global reference current during a write verification operation of the reference cell array, and thus sense data.
    Type: Application
    Filed: December 28, 2010
    Publication date: June 14, 2012
    Applicant: Hynix Semiconductor Inc.
    Inventor: Kwang Myoung RHO
  • Patent number: 8106689
    Abstract: A power-up signal generating circuit of a semiconductor memory apparatus includes a current source unit configured to supply a current to a first node; a current sink unit configured to be turned on when the level of a divided voltage dividing an external voltage is equal to or higher than a predetermined level to allow the current to flow from a first node to a second node; a control unit configured to control the turn-on timing of the current sink unit by controlling a voltage level of the second node; and a signal generating unit configured to enable a power-up signal depending on a voltage level of the first node.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: January 31, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventor: Kwang-Myoung Rho
  • Patent number: 8036026
    Abstract: A semiconductor memory device includes a plurality of memory cells configured to store data having a polarity corresponding to a direction of current flowing through a source line and a bit line; and a precharge driving unit configured to precharge the bit line to a voltage corresponding to the data in response to a precharging signal before the data are stored in the memory cells.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: October 11, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Kwang-Myoung Rho, Woo-Hyun Seo
  • Publication number: 20110221484
    Abstract: A power-up signal generating circuit of a semiconductor memory apparatus includes a current source unit configured to supply a current to a first node; a current sink unit configured to be turned on when the level of a divided voltage dividing an external voltage is equal to or higher than a predetermined level to allow the current to flow from a first node to a second node; a control unit configured to control the turn-on timing of the current sink unit by controlling a voltage level of the second node; and a signal generating unit configured to enable a power-up signal depending on a voltage level of the first node.
    Type: Application
    Filed: May 26, 2011
    Publication date: September 15, 2011
    Applicant: Hynix Semiconductor Inc.
    Inventor: KWANG MYOUNG RHO
  • Patent number: RE44632
    Abstract: A semiconductor memory device includes: a variable delay for delaying a delay locked loop (DLL) clock by a predetermined delay time to output a delayed DLL clock; an output driver for outputting data and data strobe signal in response to the delayed DLL clock; and a calibration controller for controlling the predetermined delay time of the variable delay in response to output AC parameters.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: December 10, 2013
    Assignee: 658868 N.B. Inc.
    Inventors: Young-Hoon Oh, Kwang-Myoung Rho
  • Patent number: RE48341
    Abstract: A semiconductor memory device includes: a variable delay for delaying a delay locked loop (DLL) clock by a predetermined delay time to output a delayed DLL clock; an output driver for outputting data and data strobe signal in response to the delayed DLL clock; and a calibration controller for controlling the predetermined delay time of the variable delay in response to output AC parameters.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: December 1, 2020
    Assignee: Conversant Intellectual Property Management Inc.
    Inventors: Young-Hoon Oh, Kwang-Myoung Rho