Patents by Inventor Duck-Ju Kim

Duck-Ju Kim 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: 9299444
    Abstract: A nonvolatile memory device includes a block switching unit which transmits an operation signal to a memory cell array, and a voltage sustaining block which provides a voltage to sustain the operation signal to an arbitrary interconnection overlapping the block switching unit.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: March 29, 2016
    Assignee: SK Hynix Inc.
    Inventors: Nam Kyeong Kim, Duck Ju Kim
  • Publication number: 20160086669
    Abstract: A nonvolatile memory device includes a block switching unit which transmits an operation signal to a memory cell array, and a voltage sustaining block which provides a voltage to sustain the operation signal to an arbitrary interconnection overlapping the block switching unit.
    Type: Application
    Filed: December 31, 2014
    Publication date: March 24, 2016
    Inventors: Nam Kyeong KIM, Duck Ju KIM
  • Patent number: 9275745
    Abstract: A semiconductor device includes a memory cell array includes a plurality of memory blocks, each of the memory blocks including a plurality of pages, wherein at least one of the plurality of memory blocks functions as a first storage unit to store a plurality of page addresses associated with the plurality of pages. A second storage unit loads a page address stored in the first storage unit. A control circuit is configured to cancel a program operation if an externally inputted page address is less than or equal to the page address loaded into the second storage unit, and perform the program operation and update the second storage unit with the externally inputted page address if the externally input page address is greater than the page address loaded into the second storage unit.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: March 1, 2016
    Assignee: SK Hynix Inc.
    Inventors: Sam Kyu Won, Duck Ju Kim, Won Kyung Kang
  • Patent number: 8908462
    Abstract: The present technology relates to an electronic device, and more particularly, to a semiconductor device. The semiconductor device includes a peripheral circuit, a power output line connected to the peripheral circuit and configured to transmit an operation voltage to the peripheral circuit, a current compensator including an OP-amplifier connected to the power output line, and a capacitor connected between an output terminal of the OP-amplifier and the power output line.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: December 9, 2014
    Assignee: SK Hynix Inc.
    Inventors: Sam Kyu Won, Cheul Hee Koo, Duck Ju Kim, Won Kyung Kang
  • Patent number: 8902674
    Abstract: A semiconductor memory device includes a memory cell array configured to include memory cells, peripheral circuits configured to read out data stored in a selected memory cell in a read operation, and a controller configured to control the peripheral circuits so that the peripheral circuits sense a voltage level of the bit line when a first read voltage of the read voltages is supplied to the word line and the peripheral circuits sense voltage levels of the bit line when a second read voltage lower than the first read voltage by a specific level and a third read voltage higher than the first read voltage by the specific level are supplied to the word line in order to determine whether a threshold voltage of the selected memory cell falls within a set voltage distribution in the read operation.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: December 2, 2014
    Assignee: SK Hynix Inc.
    Inventors: In Gon Yang, Duck Ju Kim, Jae Won Cha, Sung Hoon Ahn, Tae Ho Jeon
  • Patent number: 8867299
    Abstract: A non-volatile memory device includes a plurality of memory blocks, first block switches configured to correspond to the respective odd-numbered memory blocks of the plurality of memory blocks and couple the word lines of the odd-numbered memory blocks and first local lines, second block switches configured to correspond to the respective even-numbered memory blocks of the plurality of memory blocks and couple the word lines of the even-numbered memory blocks and second local lines, a local line switch unit configured to selectively couple the first local lines or the second local lines and global word lines, and a high voltage generator configured to supply operating voltages to the global word lines.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: October 21, 2014
    Assignee: SK Hynix Inc.
    Inventors: Je Il Ryu, Duck Ju Kim
  • Publication number: 20140258611
    Abstract: A semiconductor device includes a memory cell array includes a plurality of memory blocks, each of the memory blocks including a plurality of pages, wherein at least one of the plurality of memory blocks functions as a first storage unit to store a plurality of page addresses associated with the plurality of pages. A second storage unit loads a page address stored in the first storage unit. A control circuit is configured to cancel a program operation if an externally inputted page address is less than or equal to the page address loaded into the second storage unit, and perform the program operation and update the second storage unit with the externally inputted page address if the externally input page address is greater than the page address loaded into the second storage unit.
    Type: Application
    Filed: July 3, 2013
    Publication date: September 11, 2014
    Inventors: Sam Kyu WON, Duck Ju KIM, Won Kyung KANG
  • Patent number: 8824207
    Abstract: A semiconductor memory device is operated by, inter alia, sequentially inputting program data to page buffers coupled to selected pages of at least four planes in order to program selected memory cells included in the selected pages; performing a program operation on each of the four planes; performing a program verify operation on each of the four planes; and inputting new program data for next pages to the page buffers coupled to the next pages, after determining the selected pages of at least two of the four planes have passed the program verify operation, while performing the program operations and the program verify operations on the two remaining planes.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: September 2, 2014
    Assignee: SK Hynix Inc.
    Inventors: Byung Ryul Kim, Duck Ju Kim
  • Publication number: 20140160864
    Abstract: The present technology relates to an electronic device, and more particularly, to a semiconductor device. The semiconductor device includes a peripheral circuit, a power output line connected to the peripheral circuit and configured to transmit an operation voltage to the peripheral circuit, a current compensator including an OP-amplifier connected to the power output line, and a capacitor connected between an output terminal of the OP-amplifier and the power output line.
    Type: Application
    Filed: March 18, 2013
    Publication date: June 12, 2014
    Applicant: SK hynix Inc.
    Inventors: Sam Kyu WON, Cheul Hee KOO, Duck Ju KIM, Won Kyung KANG
  • Patent number: 8743632
    Abstract: A nonvolatile memory device including a plurality of memory cells arranged at a region where a word line and a bit line cross each other, a voltage generator configured to generate a program voltage to apply to the word line by increasing the program voltage by an increment whenever a program loop is repeated, a current sensing check unit configured to compare a number of failed memory cells among the memory cells to first and second reference values, and a control logic configured to control the voltage generator to change the increment according to the comparison result of the current sensing check unit.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: June 3, 2014
    Assignee: SK Hynix Inc.
    Inventors: Byung Ryul Kim, Cheul Hee Koo, Duck Ju Kim
  • Patent number: 8724412
    Abstract: A voltage supply circuit includes a high voltage generator configured to generate an operating voltage, a global word line switch configured to transfer the operating voltage to global word lines, a plurality of local line switches coupled to the global word lines and configured to transfer the operating voltage to corresponding local word lines, a precharge unit configured to supply a precharge voltage to an unselect local line switch adjacent to a select local line switch to which the operating voltage will be supplied, from among the plurality of local line switches, in a preparation section before an operation is started, and a coupling unit configured to couple the unselect local line switch and the global word line switch when the operation is started.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: May 13, 2014
    Assignee: SK Hynix Inc.
    Inventors: Pil Seon Yoo, Je Il Ryu, Duck Ju Kim
  • Publication number: 20140010026
    Abstract: A nonvolatile memory device including a plurality of memory cells arranged at a region where a word line and a bit line cross each other, a voltage generator configured to generate a program voltage to apply to the word line by increasing the program voltage by an increment whenever a program loop is repeated, a current sensing check unit configured to compare a number of failed memory cells among the memory cells to first and second reference values, and a control logic configured to control the voltage generator to change the increment according to the comparison result of the current sensing check unit.
    Type: Application
    Filed: December 11, 2012
    Publication date: January 9, 2014
    Applicant: SK HYNIX INC.
    Inventors: Byung Ryul KIM, Cheul Hee KOO, Duck Ju KIM
  • Patent number: 8611155
    Abstract: Programming a semiconductor memory device includes: performing a program loop using a blind program operation until the selected cell threshold voltages reach a first verification level; upon detecting a cell having the threshold voltage reaching the first verification level, verifying whether a cell having the threshold voltage reached a second verification level higher than the first verification level; upon verifying a cell having the threshold voltage reaching the second verification level, continuously performing program loops on cells having the first verification level as a target level and on cells having the second verification level as a target level; and upon verifying no cell having the threshold voltage reaching the second verification level, performing a program loop on memory cells having a target level higher than the first verification level, after programming the memory cells having the first verification level as the target level.
    Type: Grant
    Filed: December 30, 2011
    Date of Patent: December 17, 2013
    Assignee: SK Hynix Inc.
    Inventors: Byung Ryul Kim, Duck Ju Kim, You Sung Kim
  • Patent number: 8565022
    Abstract: A memory system includes a flash memory device including a first memory block group on which a least significant bit (LSB) program operation has been performed and a program operation on another bit has not been performed and a second memory block group on which both the LSB program operation and a most significant bit (MSB) program operation have been performed and a memory controller configured to check which of the first and second memory block groups a memory block selected for an LSB data read operation belongs to and set a level of a read voltage for the LSB data read operation of the selected memory block.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: October 22, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventors: Tai Sik Shin, Duck Ju Kim, Dong Hyeon Ham
  • Publication number: 20130163335
    Abstract: A semiconductor memory device is operated by, inter alia, sequentially inputting program data to page buffers coupled to selected pages of at least four planes in order to program selected memory cells included in the selected pages; performing a program operation on each of the four planes; performing a program verify operation on each of the four planes; and inputting new program data for next pages to the page buffers coupled to the next pages, after determining the selected pages of at least two of the four planes have passed the program verify operation, while performing the program operations and the program verify operations on the two remaining planes.
    Type: Application
    Filed: August 31, 2012
    Publication date: June 27, 2013
    Applicant: SK HYNIX INC.
    Inventors: Byung Ryul KIM, Duck Ju KIM
  • Patent number: 8422309
    Abstract: A voltage generation circuit comprises a voltage generation control unit configured to output one of a first voltage level determination signal having a fixed data value and a second voltage level determination signal having a varying data value in response to a selection signal, and a voltage generation unit configured to generate a voltage having a single pulse form or a voltage having a pulse form whose rising edge portion rises in incremental voltage steps in response to the voltage level determination signal outputted from the voltage generation control unit.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: April 16, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventors: Byung Ryul Kim, Duck Ju Kim, You Sung Kim, Se Chun Park
  • Publication number: 20130083614
    Abstract: A voltage supply circuit includes a high voltage generator configured to generate an operating voltage, a global word line switch configured to transfer the operating voltage to global word lines, a plurality of local line switches coupled to the global word lines and configured to transfer the operating voltage to corresponding local word lines, a precharge unit configured to supply a precharge voltage to an unselect local line switch adjacent to a select local line switch to which the operating voltage will be supplied, from among the plurality of local line switches, in a preparation section before an operation is started, and a coupling unit configured to couple the unselect local line switch and the global word line switch when the operation is started.
    Type: Application
    Filed: September 13, 2012
    Publication date: April 4, 2013
    Applicant: SK HYNIX INC.
    Inventors: Pil Seon YOO, Je Il RYU, Duck Ju KIM
  • Publication number: 20130070552
    Abstract: A non-volatile memory device includes a plurality of memory blocks, first block switches configured to correspond to the respective odd-numbered memory blocks of the plurality of memory blocks and couple the word lines of the odd-numbered memory blocks and first local lines, second block switches configured to correspond to the respective even-numbered memory blocks of the plurality of memory blocks and couple the word lines of the even-numbered memory blocks and second local lines, a local line switch unit configured to selectively couple the first local lines or the second local lines and global word lines, and a high voltage generator configured to supply operating voltages to the global word lines.
    Type: Application
    Filed: June 4, 2012
    Publication date: March 21, 2013
    Applicant: SK HYNIX INC.
    Inventors: Je Il RYU, Duck Ju KIM
  • Publication number: 20120269007
    Abstract: A semiconductor memory device includes a memory cell array configured to include memory cells, peripheral circuits configured to read out data stored in a selected memory cell in a read operation, and a controller configured to control the peripheral circuits so that the peripheral circuits sense a voltage level of the bit line when a first read voltage of the read voltages is supplied to the word line and the peripheral circuits sense voltage levels of the bit line when a second read voltage lower than the first read voltage by a specific level and a third read voltage higher than the first read voltage by the specific level are supplied to the word line in order to determine whether a threshold voltage of the selected memory cell falls within a set voltage distribution in the read operation.
    Type: Application
    Filed: April 19, 2012
    Publication date: October 25, 2012
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventors: In Gon YANG, Duck Ju KIM, Jae Won CHA, Sung Hoon AHN, Tae Ho JEON
  • Publication number: 20120170373
    Abstract: Programming a semiconductor memory device includes: performing a program loop using a blind program operation until the selected cell threshold voltages reach a first verification level; upon detecting a cell having the threshold voltage reaching the first verification level, verifying whether a cell having the threshold voltage reached a second verification level higher than the first verification level; upon verifying a cell having the threshold voltage reaching the second verification level, continuously performing program loops on cells having the first verification level as a target level and on cells having the second verification level as a target level; and upon verifying no cell having the threshold voltage reaching the second verification level, performing a program loop on memory cells having a target level higher than the first verification level, after programming the memory cells having the first verification level as the target level.
    Type: Application
    Filed: December 30, 2011
    Publication date: July 5, 2012
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventors: Byung Ryul KIM, Duck Ju KIM, You Sung KIM