Patents by Inventor Don-Hyun Choi

Don-Hyun Choi 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: 20240079078
    Abstract: A semiconductor device includes a redundancy control signal generation circuit configured to generate a redundancy control signal by determining whether a row address for an active operation has been repaired through a soft post package repair operation and determining whether a row hammer phenomenon has occurred with respect to the row address. The semiconductor device also includes a first selection address generation circuit configured to generate a first selection address for driving a sub word line or a redundancy word line from one of a repair address and a first internal address, based on the redundancy control signal. The semiconductor device further includes a second selection address generation circuit configured to generate a second selection address for driving the sub word line or the redundancy word line from one of a fixed address and a second internal address, based on the redundancy control signal.
    Type: Application
    Filed: December 27, 2022
    Publication date: March 7, 2024
    Applicant: SK hynix Inc.
    Inventors: Sang Hyun KU, Don Hyun CHOI
  • Patent number: 10607684
    Abstract: A semiconductor device includes a delay time adjustment circuit and an address input circuit. The delay time adjustment circuit adjusts a point in time when charges are supplied to internal nodes according to a voltage level of a back-bias voltage in response to a test mode signal. The delay time adjustment circuit also delays an active signal by a first delay time varying according to amounts of charge of the internal nodes to generate a bank selection signal. The address input circuit is driven by the back-bias voltage. The address input circuit receives an address in response to the bank selection signal to generate an internal address. The address input circuit delays the address by a second delay time varying according to a voltage level of the back-bias voltage.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: March 31, 2020
    Assignee: SK hynix Inc.
    Inventors: Seung Min Yang, Kyoung Youn Lee, Byeong Cheol Lee, Don Hyun Choi
  • Publication number: 20200013450
    Abstract: A semiconductor device includes a delay time adjustment circuit and an address input circuit. The delay time adjustment circuit adjusts a point in time when charges are supplied to internal nodes according to a voltage level of a back-bias voltage in response to a test mode signal. The delay time adjustment circuit also delays an active signal by a first delay time varying according to amounts of charge of the internal nodes to generate a bank selection signal. The address input circuit is driven by the back-bias voltage. The address input circuit receives an address in response to the bank selection signal to generate an internal address. The address input circuit delays the address by a second delay time varying according to a voltage level of the back-bias voltage.
    Type: Application
    Filed: December 6, 2018
    Publication date: January 9, 2020
    Applicant: SK hynix Inc.
    Inventors: Seung Min YANG, Kyoung Youn LEE, Byeong Cheol LEE, Don Hyun CHOI
  • Patent number: 9595351
    Abstract: A semiconductor memory apparatus may include a decoding unit configured to enable one of a plurality of sub word line driver enable signals by decoding a plurality of addresses while the decoding unit operates in a normal mode, and enables specific sub word line driver enable signals among the plurality of sub word line driver enable signals regardless of the plurality of addresses while the decoding unit is operating in a test mode. The semiconductor memory apparatus may include a sub word line driver group configured to include a plurality of sub word line drivers, the plurality of sub word line drivers configured for activation in response to the plurality of sub word line driver enable signals. The sub word line driver group is configured so that inactivated sub word line drivers are arranged between activated sub word line drivers while the decoding unit is operating in the test mode.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: March 14, 2017
    Assignee: SK hynix Inc.
    Inventor: Don Hyun Choi
  • Publication number: 20170053715
    Abstract: Various embodiments generally relate to a semiconductor device and a device for a semiconductor device, and more particularly, to a technology relating to a margin of a data retention time. The semiconductor device may include a repair detection unit configured to determine whether an inputted address is a repair address and output a repair detection signal. The semiconductor device may include a refresh control unit configured to simultaneously activate two or more word lines in response to a refresh command signal and sequentially activate the two or more word lines according to the repair detection signal.
    Type: Application
    Filed: November 5, 2015
    Publication date: February 23, 2017
    Inventors: Jae Il KIM, Seung Geun BAEK, Don Hyun CHOI
  • Patent number: 9576684
    Abstract: Various embodiments generally relate to a semiconductor device and a device for a semiconductor device, and more particularly, to a technology relating to a margin of a data retention time. The semiconductor device may include a repair detection unit configured to determine whether an inputted address is a repair address and output a repair detection signal. The semiconductor device may include a refresh control unit configured to simultaneously activate two or more word lines in response to a refresh command signal and sequentially activate the two or more word lines according to the repair detection signal.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: February 21, 2017
    Assignee: SK HYNIX INC.
    Inventors: Jae Il Kim, Seung Geun Baek, Don Hyun Choi
  • Publication number: 20160329108
    Abstract: A semiconductor memory apparatus may include a decoding unit configured to enable one of a plurality of sub word line driver enable signals by decoding a plurality of addresses while the decoding unit operates in a normal mode, and enables specific sub word line driver enable signals among the plurality of sub word line driver enable signals regardless of the plurality of addresses while the decoding unit is operating in a test mode. The semiconductor memory apparatus may include a sub word line driver group configured to include a plurality of sub word line drivers, the plurality of sub word line drivers configured for activation in response to the plurality of sub word line driver enable signals. The sub word line driver group is configured so that inactivated sub word line drivers are arranged between activated sub word line drivers while the decoding unit is operating in the test mode.
    Type: Application
    Filed: October 14, 2015
    Publication date: November 10, 2016
    Inventor: Don Hyun CHOI
  • Patent number: 9455008
    Abstract: A semiconductor apparatus includes a plurality of memory blocks divided into an even mat group and an odd mat group; and an active control block configured to activate any one group of the even mat group and the odd mat group at a first timing in response to a plurality of test signals, and activate the other group at a second timing.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: September 27, 2016
    Assignee: SK hynix Inc.
    Inventor: Don Hyun Choi
  • Publication number: 20150235687
    Abstract: A semiconductor apparatus includes a plurality of memory blocks divided into an even mat group and an odd mat group; and an active control block configured to activate any one group of the even mat group and the odd mat group at a first timing in response to a plurality of test signals, and activate the other group at a second timing.
    Type: Application
    Filed: May 15, 2014
    Publication date: August 20, 2015
    Applicant: SK hynix Inc.
    Inventor: Don Hyun CHOI
  • Patent number: 8810295
    Abstract: A latch circuit may include a first inverting unit configured to drive a second node in response to a level of a first node, a second inverting unit configured to drive the first node in response to a level of the second node, an initialization unit configured to drive the first node at a first level in response to activation of an initialization signal, and a power breaker configured to break a supply of power of a second level to the second inverting unit when the initialization signal is activated.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: August 19, 2014
    Assignee: SK Hynix Inc.
    Inventors: Ja-Beom Koo, Kang-Youl Lee, Don-Hyun Choi
  • Patent number: 8750063
    Abstract: A sense amplifier control circuit according to the present invention is disposed in a bit line sense amplifier (BLSA) array region including a plurality of BLSAs and is configured to supply a precharge voltage to the plurality of BLSAs in response to a control signal.
    Type: Grant
    Filed: September 3, 2012
    Date of Patent: June 10, 2014
    Assignee: SK Hynix Inc.
    Inventor: Don Hyun Choi
  • Publication number: 20130315017
    Abstract: A sense amplifier control circuit according to the present invention is disposed in a bit line sense amplifier (BLSA) array region including a plurality of BLSAs and is configured to supply a precharge voltage to the plurality of BLSAs in response to a control signal.
    Type: Application
    Filed: September 3, 2012
    Publication date: November 28, 2013
    Applicant: SK hYNIX Inc.
    Inventor: Don Hyun CHOI
  • Publication number: 20130307595
    Abstract: A latch circuit may include a first inverting unit configured to drive a second node in response to a level of a first node, a second inverting unit configured to drive the first node in response to a level of the second node, an initialization unit configured to drive the first node at a first level in response to activation of an initialization signal, and a power breaker configured to break a supply of power of a second level to the second inverting unit when the initialization signal is activated.
    Type: Application
    Filed: December 17, 2012
    Publication date: November 21, 2013
    Applicant: SK HYNIX INC.
    Inventors: Ja-Beom KOO, Kang-Youl LEE, Don-Hyun CHOI
  • Patent number: 7952954
    Abstract: A semiconductor integrated circuit includes a row main signal generation section configured to provide a row main signal serving as a driving reference for a plurality of row-series circuit units in response to a bank active signal, wherein activation timing of the row main signal is controlled by a test mode signal.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: May 31, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventor: Don-Hyun Choi
  • Publication number: 20090316504
    Abstract: A semiconductor integrated circuit includes a row main signal generation section configured to provide a row main signal serving as a driving reference for a plurality of row-series circuit units in response to a bank active signal, wherein activation timing of the row main signal is controlled by a test mode signal.
    Type: Application
    Filed: December 30, 2008
    Publication date: December 24, 2009
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventor: Don Hyun Choi