Patents by Inventor Sang Tae Ahn

Sang Tae Ahn 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: 20190304378
    Abstract: An organic light emitting display device includes scan lines arranged in horizontal lines, data lines intersecting the scan lines, a pixel array including pixels coupled to the scan lines and the data lines, the pixels including at least first color pixels, a panel tester including switching elements coupled to first ends of the data lines, the switching elements including at least first and second switching elements, and a first line coupled to the first switching elements and a second line coupled to the second switching elements. Data lines of K-th to (K+L)-th (where K and L are natural numbers) first color pixels arranged in a predetermined horizontal line are coupled to the first line through the first switching elements, and data lines of at least a part of remaining first color pixels arranged in the predetermined horizontal line are coupled to the second line through the second switching elements.
    Type: Application
    Filed: April 2, 2019
    Publication date: October 3, 2019
    Inventors: Dae Youn CHO, Sang Kil KIM, Hyo Jung KIM, Jong Woo PARK, Dong Gi AHN, Jong Won LEE, Ju Hee LEE, Young Tae CHOI
  • Publication number: 20190287999
    Abstract: A semiconductor device includes stack structures each including a first conductive layer, a substrate disposed under the stack structures, first impurity regions disposed in the substrate, and at least one trench passing through the stack structures and disposed above the first impurity regions.
    Type: Application
    Filed: October 25, 2018
    Publication date: September 19, 2019
    Applicant: SK hynix Inc.
    Inventors: Yung Jun KIM, Won Hyo CHA, Byung Soo PARK, Sang Tae AHN, Sung Jae CHUNG
  • Patent number: 10290355
    Abstract: In a method of programming a semiconductor memory device, during a standby period, a standby voltage is applied to word lines coupled to a plurality of memory cells included in a selected memory cell string, and, during a first program period, a first pre-bias voltage is applied to a word line coupled to at least one of programmed memory cells of the selected memory cell string. The first pre-bias voltage is greater than the standby voltage.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: May 14, 2019
    Assignee: SK hynix Inc.
    Inventors: Eun Mee Kwon, Ji Seon Kim, Sang Tae Ahn
  • Publication number: 20180226129
    Abstract: In a method of programming a semiconductor memory device, during a standby period, a standby voltage is applied to word lines coupled to a plurality of memory cells included in a selected memory cell string, and, during a first program period, a first pre-bias voltage is applied to a word line coupled to at least one of programmed memory cells of the selected memory cell string. The first pre-bias voltage is greater than the standby voltage.
    Type: Application
    Filed: April 9, 2018
    Publication date: August 9, 2018
    Applicant: SK hynix Inc.
    Inventors: Eun Mee KWON, Ji Seon KIM, Sang Tae AHN
  • Patent number: 10022082
    Abstract: An apparatus and a method is provided for detecting biometric signals of a driver and classifying the driver into a normal state or a fatigued state based on the biometric signals. An apparatus may include: a biometric signal measuring part configured to measure the biometric signals including a blood flow rate of a brain of the driver using an electro-encephalography (EEG), an electro-cardiography (ECG), and a functional near-infrared spectroscopy (fNIRS) of the driver; a biometric signal integral part configured to integrate the measured biometric signals, to extract characteristics of the respective biometric signals from the measured biometric signals and to then integrate the extracted characteristics, or to classify the extracted characteristics of the biometric signals and to then integrate the classified characteristics; and a driver state detecting part configured to detect the state of the driver based on the integrated biometric signals.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: July 17, 2018
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Gwangju Institute of Science and Technology
    Inventors: Nam Woong Hur, Seul Ki Jeon, Hyun Sang Kim, Eung Hwan Kim, Sang Tae Ahn, Hyo Jung Jang, Sung Chan Jun
  • Patent number: 9966144
    Abstract: In a method of programming a semiconductor memory device, during a standby period, a standby voltage is applied to word lines coupled to a plurality of memory cells included in a selected memory cell string, and, during a first program period, a first pre-bias voltage is applied to a word line coupled to at least one of programmed memory cells of the selected memory cell string. The first pre-bias voltage is greater than the standby voltage.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: May 8, 2018
    Assignee: SK hynix Inc.
    Inventors: Eun Mee Kwon, Ji Seon Kim, Sang Tae Ahn
  • Publication number: 20180005696
    Abstract: In a method of programming a semiconductor memory device, during a standby period, a standby voltage is applied to word lines coupled to a plurality of memory cells included in a selected memory cell string, and, during a first program period, a first pre-bias voltage is applied to a word line coupled to at least one of programmed memory cells of the selected memory cell string. The first pre-bias voltage is greater than the standby voltage.
    Type: Application
    Filed: March 13, 2017
    Publication date: January 4, 2018
    Applicant: SK hynix Inc.
    Inventors: Eun Mee KWON, Ji Seon KIM, Sang Tae AHN
  • Publication number: 20170367635
    Abstract: An apparatus and a method is provided for detecting biometric signals of a driver and classifying the driver into a normal state or a fatigued state based on the biometric signals. An apparatus may include: a biometric signal measuring part configured to measure the biometric signals including a blood flow rate of a brain of the driver using an electro-encephalography (EEG), an electro-cardiography (ECG), and a functional near-infrared spectroscopy (fNIRS) of the driver; a biometric signal integral part configured to integrate the measured biometric signals, to extract characteristics of the respective biometric signals from the measured biometric signals and to then integrate the extracted characteristics, or to classify the extracted characteristics of the biometric signals and to then integrate the classified characteristics; and a driver state detecting part configured to detect the state of the driver based on the integrated biometric signals.
    Type: Application
    Filed: November 18, 2016
    Publication date: December 28, 2017
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Nam Woong HUR, Seul Ki JEON, Hyun Sang KIM, Eung Hwan KIM, Sang Tae AHN, Hyo Jung JANG, Sung Chan JUN
  • Patent number: 9695836
    Abstract: Provided is a fly wheel, including: a fly wheel body provided with a receiving part in which air is filled and mounted on driving shaft; a blade radially coupled to the fly wheel body, including a ventilation passage formed therein to be communicated with the receiving part and a puncturing part formed on an outer race thereof to be communicated with the ventilation passage, and generating thrust by discharging the air filled in the receiving part to the puncturing part at the time of rotating the driving shaft; and a check valve installed on the fly wheel body and being opened and closed by a pressure difference between the receiving part and the outside.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: July 4, 2017
    Inventors: Sang Tae Ahn, Chun Young Ahn
  • Publication number: 20150260196
    Abstract: Provided is a fly wheel, including: a fly wheel body provided with a receiving part in which air is filled and mounted on driving shaft; a blade radially coupled to the fly wheel body, including a ventilation passage formed therein to be communicated with the receiving part and a puncturing part formed on an outer race thereof to be communicated with the ventilation passage, and generating thrust by discharging the air filled in the receiving part to the puncturing part at the time of rotating the driving shaft; and a check valve installed on the fly wheel body and being opened and closed by a pressure difference between the receiving part and the outside.
    Type: Application
    Filed: July 3, 2013
    Publication date: September 17, 2015
    Inventors: Sang Tae AHN, Chun Young AHN
  • Publication number: 20150221385
    Abstract: A semiconductor memory device includes a plurality of normal memory cells stacked over a substrate and coupled in series with each other, a plurality of selection transistors coupled in series, and one or more dummy memory cells coupled between the plurality of normal memory cells and the plurality of selection transistors, wherein the plurality of selection transistors includes first and second selection transistors, and the first selection transistor is adjacent to the dummy memory cells, and has a lower threshold voltage than the second selection transistor.
    Type: Application
    Filed: July 16, 2014
    Publication date: August 6, 2015
    Inventors: Sang Tae AHN, Gyu Seog CHO
  • Patent number: 8999784
    Abstract: A method of manufacturing a semiconductor device includes forming first auxiliary patterns, alternately forming first material layers and second material layers on the sidewalls of the first auxiliary patterns so that a gap region between the first auxiliary patterns adjacent to each other is filled, removing the second material layers, and forming charge storage layers in respective regions from which the second material layers have been removed.
    Type: Grant
    Filed: September 1, 2012
    Date of Patent: April 7, 2015
    Assignee: SK Hynix Inc.
    Inventor: Sang Tae Ahn
  • Patent number: 8863636
    Abstract: Disclosed are a soft recoil system and a cannon having the same. The soft recoil system includes: a cannon barrel returning device mounted to a recoil device for absorbing a recoil force occurring when ammunition is fired, and configured to backward press a breech ring, such that the cannon barrel is fixed to a preset position; a cannon barrel fixing device installed at the recoil device, and configured to fix the cannon barrel when the cannon barrel returns to the fixed position; and a forward momentum generator connected to the recoil device and the breech ring, respectively, configured to forward move the cannon barrel by applying a force to the breech ring, such that the ammunition is fired while the cannon barrel forward moves, and configured to reduce a recoil force by partially attenuating recoil momentum resulting from the firing of the ammunition, by forward momentum.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: October 21, 2014
    Assignee: Agency for Defense Development
    Inventors: Sang-Tae Ahn, Kuk-Jeong Kang, Chang-Ki Cho, Sang-Bae Jun
  • Publication number: 20130269507
    Abstract: Disclosed are a soft recoil system and a cannon having the same. The soft recoil system includes: a cannon barrel returning device mounted to a recoil device for absorbing a recoil force occurring when ammunition is fired, and configured to backward press a breech ring, such that the cannon barrel is fixed to a preset position; a cannon barrel fixing device installed at the recoil device, and configured to fix the cannon barrel when the cannon barrel returns to the fixed position; and a forward momentum generator connected to the recoil device and the breech ring, respectively, configured to forward move the cannon barrel by applying a force to the breech ring, such that the ammunition is fired while the cannon barrel forward moves, and configured to reduce a recoil force by partially attenuating recoil momentum resulting from the firing of the ammunition, by forward momentum.
    Type: Application
    Filed: November 16, 2012
    Publication date: October 17, 2013
    Inventors: Sang-Tae AHN, Kuk-Jeong KANG, Chang-Ki CHO, Sang-Bae JUN
  • Patent number: 8555767
    Abstract: An apparatus for collecting empty cannon cartridges a bracket spacedly disposed from one or more surfaces of a breech ring for accommodating a cannon barrel therein; an operation pin mounted to the breech ring adjacent to the bracket; an upper link rotatably mounted to one surface of the bracket, and configured to slidingy contact the operation pin; a lower link concentric with the upper link, rotatably mounted to one surface of the bracket, and rotating together with the upper link by being engaged with the upper link at a specific angle; and a collecting unit having one end connected to the lower link, and configured to be unfolded such that empty cartridges extracted from the cannon barrel are collected. When the cannon barrel moves forward, the lower link rotates by being engaged with the upper link as the operation pin slides on the upper link, and the collecting unit is unfolded such that the empty cartridges are collected.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: October 15, 2013
    Assignee: Agency for Defense Development
    Inventors: Sang-Tae Ahn, Kuk-Jeong Kang, Suk-Kyun Hong, Chul-Mo Yeo
  • Patent number: 8549977
    Abstract: An apparatus for opening and closing a breech block includes a cam follower, a housing, a first plunger, a rotation unit, a pressurizing unit, an open cam, a first elastic member, and a second plunger. In the present invention, in a state that the open cam is out of the range of a moving path of the cam follower so as to restrict rotation of the cam follower, the second plunger is inserted into the housing so as to support the pressurizing unit. This may allow a closed state of the breech block to be maintained after firing. Furthermore, in the present invention, a closed mode of the breech block may be converted into an open mode, through simple manipulations, e.g., by rotating the rotation unit, i.e., by moving the pressurizing unit.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: October 8, 2013
    Assignee: Agency for Defense Development
    Inventors: Sang-Tae Ahn, Kuk-Jeong Kang, Tae-Ho Han, Cheon-Gon Jeon
  • Patent number: 8530330
    Abstract: A method for manufacturing a semiconductor device that can prevent the loss of an isolation structure and that can also stably form epi-silicon layers is described. The method for manufacturing a semiconductor device includes defining trenches in a semiconductor substrate having active regions and isolation regions. The trenches are partially filled with a first insulation layer. An etch protection layer is formed on the surfaces of the trenches that are filled with the first insulation layer. A second insulation layer is filled in the trenches formed with the etch protection layer to form an isolation structure in the isolation regions of the semiconductor substrate. Finally, portions of the active regions of the semiconductor substrate are recessed such that the isolation structure has a height higher than the active regions of the semiconductor substrate.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: September 10, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventors: Sang Tae Ahn, Ja Chun Ku, Eun Jeong Kim, Wan Soo Kim
  • Patent number: 8507665
    Abstract: A reactive cyclodextrin derivative or a reactive glucose derivative is used as a template derivative for forming an ultra-low dielectric layer. A layer is formed of the reactive cyclodextrin derivative or the reactive glucose derivative capped with Si—H and then cured in an atmosphere of hydrogen peroxide to form the ultra-low dielectric layer.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: August 13, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventors: Sung Kyu Min, Ja Chun Ku, Sang Tae Ahn, Chai O Chung, Hyeon Ju An, Hyo Seok Lee, Eun Jeong Kim, Chan Bae Kim
  • Publication number: 20130160637
    Abstract: An apparatus for collecting an empty cartridge includes a bracket, an operation pin, an upper link, a lower link, and a collecting unit, wherein when a cannon barrel forward moves, the lower link rotates by being engaged with the upper link as the operation pin slides on the upper link, and the collecting unit is unfolded such that the empty cartridge is collected after a bump.
    Type: Application
    Filed: December 27, 2011
    Publication date: June 27, 2013
    Inventors: Sang-Tae AHN, Kuk-Jeong KANG, Suk-Kyun HONG, Chul-Mo YEO
  • Publication number: 20130160636
    Abstract: An apparatus for opening and closing a breech block includes a cam follower, a housing, a first plunger, a rotation unit, a pressurizing unit, an open cam, a first elastic member, and a second plunger. In the present invention, in a state that the open cam is out of the range of a moving path of the cam follower so as to restrict rotation of the cam follower, the second plunger is inserted into the housing so as to support the pressurizing unit. This may allow a closed state of the breech block to be maintained after firing. Furthermore, in the present invention, a closed mode of the breech block may be converted into an open mode, through simple manipulations, e.g., by rotating the rotation unit, i.e., by moving the pressurizing unit.
    Type: Application
    Filed: December 27, 2011
    Publication date: June 27, 2013
    Inventors: Sang-Tae AHN, Kuk-Jeong KANG, Tae-Ho HAN, Cheon-Gon JEON