Patents by Inventor Young-Bae Choi

Young-Bae 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).

  • Patent number: 10998344
    Abstract: An electronic device may include a display having an array of display pixels on a substrate. The display pixels may be organic light-emitting diode display pixels or display pixels in a liquid crystal display. In an organic light-emitting diode display, hybrid thin-film transistor structures may be formed that include semiconducting oxide thin-film transistors, silicon thin-film transistors, and capacitor structures. The capacitor structures may overlap the semiconducting oxide thin-film transistors. Organic light-emitting diode display pixels may have combinations of oxide and silicon transistors. In a liquid crystal display, display driver circuitry may include silicon thin-film transistor circuitry and display pixels may be based on oxide thin-film transistors. A single layer or two different layers of gate metal may be used in forming silicon transistor gates and oxide transistor gates. A silicon transistor may have a gate that overlaps a floating gate structure.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: May 4, 2021
    Assignee: Apple Inc.
    Inventors: Vasudha Gupta, Jae Won Choi, Shih Chang Chang, Tsung-Ting Tsai, Young Bae Park
  • Patent number: 10060969
    Abstract: A test board unit may include a test board, a thermal tank and a heat-dissipating plate. The test board may be configured to provide a semiconductor chip with a test current. The thermal tank may be configured to dissipate heat generated in the semiconductor chip. The heat-dissipating plate may be coupled between the test board and the thermal tank and may be configured to transfer the heat from the semiconductor chip to the thermal tank.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: August 28, 2018
    Assignees: SK hynix Inc., UNITEST INC.
    Inventors: Woo Sik Jung, Byoung Seon Koh, Hyo Jin Oh, Young Bae Choi, Jin Young Jung
  • Patent number: 9864496
    Abstract: A mobile terminal including a wireless communication unit configured to provide wireless communication; a touch screen; and a controller configured to receive a sliding input having a sliding trajectory on the touch screen, slidably display a notification bar along the sliding trajectory, display a given number of notification messages in a specific area of the notification bar, receive a drag input in the specific area, and display updated notification messages in the specific area with other notification messages.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: January 9, 2018
    Assignee: LG ELECTRONICS INC.
    Inventor: Young-Bae Choi
  • Patent number: 9671484
    Abstract: Provided are a magnetic sensor test apparatus and a magnetic sensor test method. The magnetic sensor test apparatus includes a vertical coil and at least one periphery coil disposed peripherally about the vertical coil. Both the vertical coil and the periphery coil may be configured to generate a horizontal and/or a vertical magnetic field in a semiconductor wafer.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: June 6, 2017
    Assignee: HAECHITECH CORPORATION
    Inventors: Ki-bog Youm, Young-bae Choi, Young-sug Seong, Kyung-seok Jin
  • Publication number: 20160262255
    Abstract: A test board unit may include a test board, a thermal tank and a heat-dissipating plate. The test board may be configured to provide a semiconductor chip with a test current. The thermal tank may be configured to dissipate heat generated in the semiconductor chip. The heat-dissipating plate may be coupled between the test board and the thermal tank and may be configured to transfer the heat from the semiconductor chip to the thermal tank.
    Type: Application
    Filed: September 4, 2015
    Publication date: September 8, 2016
    Inventors: Woo Sik JUNG, Byoung Seon KOH, Hyo Jin OH, Young Bae CHOI, Jin Young JUNG
  • Publication number: 20150177970
    Abstract: A mobile terminal including a wireless communication unit configured to provide wireless communication; a touch screen; and a controller configured to receive a sliding input having a sliding trajectory on the touch screen, slidably display a notification bar along the sliding trajectory, display a given number of notification messages in a specific area of the notification bar, receive a drag input in the specific area, and display updated notification messages in the specific area with other notification messages.
    Type: Application
    Filed: July 18, 2014
    Publication date: June 25, 2015
    Inventor: Young-Bae CHOI
  • Publication number: 20150042318
    Abstract: Provided are a magnetic sensor test apparatus and a magnetic sensor test method. The magnetic sensor test apparatus includes a vertical coil configured to generate a magnetic field and at least one periphery coil. The magnetic sensor test apparatus and method may test a magnetic sensor on a semiconductor wafer.
    Type: Application
    Filed: May 27, 2014
    Publication date: February 12, 2015
    Applicant: MagnaChip Semiconductor, Ltd.
    Inventors: Ki-bog Youm, Young-bae Choi, Young-sug Seong, Kyung-seok Jin
  • Patent number: 7983101
    Abstract: The present invention discloses a circuit for generating a data strobe signal in a DDR memory device and a method therefor which can precisely distinguish preamble and postamble periods of the data strobe signal by generating pulses for generating the data strobe signal only in a data strobe signal input period by using an internal clock signal according to CAS latency under a read command, and generating the data strobe signal by using the pulses, and which can improve reliability of the circuit operation by precisely controlling operation timing with the internal clock signal.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: July 19, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventors: Kwang Jin Na, Young Bae Choi
  • Publication number: 20100172196
    Abstract: The present invention discloses a circuit for generating a data strobe signal in a DDR memory device and a method therefor which can precisely distinguish preamble and postamble periods of the data strobe signal by generating pulses for generating the data strobe signal only in a data strobe signal input period by using an internal clock signal according to CAS latency under a read command, and generating the data strobe signal by using the pulses, and which can improve reliability of the circuit operation by precisely controlling operation timing with the internal clock signal.
    Type: Application
    Filed: March 18, 2010
    Publication date: July 8, 2010
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventors: Kwang Jin Na, Young Bae Choi
  • Patent number: 7710799
    Abstract: The present invention discloses a circuit for generating a data strobe signal in a DDR memory device and a method therefor which can precisely distinguish preamble and postamble periods of the data strobe signal by generating pulses for generating the data strobe signal only in a data strobe signal input period by using an internal clock signal according to CAS latency under a read command, and generating the data strobe signal by using the pulses, and which can improve reliability of the circuit operation by precisely controlling operation timing with the internal clock signal.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: May 4, 2010
    Assignee: Hynix Semiconductor Inc.
    Inventors: Kwang Jin Na, Young Bae Choi
  • Patent number: 7361228
    Abstract: Showerheads including a plate having a plurality of gas outlet holes extending therethrough and a head cover coupled to the plate to form a space between the plate and the head cover. A gas supply inlet member is configured to provide gas to the space directed toward the head cover. A gas distribution member on an inner face of the head cover facing the space is configured to partially suppress flow of the gas provided to the space in a direction along the gas distribution member to substantially uniformly distribute the gas in the space. The direction along the gas distribution member may be a horizontal direction and the gas provided to the space is directed in a substantially vertical upward direction. Apparatus and methods using the showerheads are also provided.
    Type: Grant
    Filed: February 17, 2005
    Date of Patent: April 22, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Bae Choi, Moon-Sook Lee, Byoung-Jae Bae
  • Patent number: 7312647
    Abstract: A memory device having a duty ratio corrector which can reduce power consumption by blocking current paths between output terminals and a ground terminal by applying input signals for turning off switching devices for generating an auxiliary voltage for correcting a duty ratio at an initial stage, and which can improve an operational speed by changing the auxiliary voltage from a predetermined voltage, not 0V, to a target voltage.
    Type: Grant
    Filed: January 17, 2007
    Date of Patent: December 25, 2007
    Assignee: Hynix Semiconductor Inc.
    Inventors: Young Bae Choi, Kwang Jin Na
  • Patent number: 7190203
    Abstract: A memory device having a duty ratio corrector which can reduce power consumption by blocking current paths between output terminals and a ground terminal by applying input signals for turning off switching devices for generating an auxiliary voltage for correcting a duty ratio at an initial stage, and which can improve an operational speed by changing the auxiliary voltage from a predetermined voltage, not 0V, to a target voltage.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: March 13, 2007
    Assignee: Hynix Semiconductor Inc.
    Inventors: Young Bae Choi, Kwang Jin Na
  • Patent number: 7173866
    Abstract: The present invention discloses a circuit for generating a data strobe signal in a DDR memory device and a method therefor which can precisely distinguish preamble and postamble periods of the data strobe signal by generating pulses for generating the data strobe signal only in a data strobe signal input period by using an internal clock signal according to CAS latency under a read command, and generating the data strobe signal by using the pulses, and which can improve reliability of the circuit operation by precisely controlling operation timing with the internal clock signal.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: February 6, 2007
    Assignee: Hynix Semiconductor Inc.
    Inventors: Kwang Jin Na, Young Bae Choi
  • Patent number: 7064989
    Abstract: Provided is directed to an on-die termination control circuit and a method for generating an on-die termination control signal, and the circuit and the method are capable of performing an optimized termination operation during data input and output, by generating a control signal during read and write operations and then controlling the termination circuit to differentiate an impedance of the termination circuit.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: June 20, 2006
    Assignee: Hynix Semiconductor Inc.
    Inventors: Gwang Jin Na, Young Bae Choi
  • Patent number: 7023254
    Abstract: The present invention discloses a duty ratio corrector which can reduce power consumption by blocking current paths between output terminals and a ground terminal by applying input signals for turning off switching devices for generating an auxiliary voltage for correcting a duty ratio at an initial stage, and which can improve an operational speed by changing the auxiliary voltage from a predetermined voltage, not 0V, to an target voltage, and a memory device having the same.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: April 4, 2006
    Assignee: Hynix Semiconductor Inc.
    Inventors: Young Bae Choi, Kwang Jin Na
  • Publication number: 20060011298
    Abstract: Showerheads for use in an apparatus for manufacturing a semiconductor substrate include an injection plate defining a bottom face of a gas receiving space in the showerhead and a gas receiving channel extending within the injection plate. A plurality of exhausting holes in the injection plate are coupled to the gas receiving channel. The exhausting holes are configured to exhaust gas from the gas receiving channel to the bottom face of the gas receiving space. A plurality of channels extend through the injection plate from the bottom face of the gas receiving space configured to flow gas from the bottom face of the gas receiving space out of the space.
    Type: Application
    Filed: July 8, 2005
    Publication date: January 19, 2006
    Inventors: Ji-Eun Lim, Byoung-Jae Bae, Young-Bae Choi
  • Patent number: 6977848
    Abstract: A data output control circuit for use in a synchronous semiconductor memory device, which has a plurality of CAS latency modes, includes a signal generating unit for generating an internal signal corresponding to an input command; a CAS latency mode control unit for outputting the internal signal as a controlled internal signal; a signal shifting unit for generating a plurality of shifted signals by synchronizing the controlled internal signal with a DLL clock signal; and a data output enable signal generating unit for outputting one of the plurality of shifted signals as a data output enable signal depending on a plurality of control signals, wherein each of the plurality of control signals corresponds to two or more continuous CAS latency modes.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: December 20, 2005
    Assignee: Hynix Semiconductor Inc.
    Inventor: Young-Bae Choi
  • Publication number: 20050183826
    Abstract: Showerheads including a plate having a plurality of gas outlet holes extending therethrough and a head cover coupled to the plate to form a space between the plate and the head cover. A gas supply inlet member is configured to provide gas to the space directed toward the head cover. A gas distribution member on an inner face of the head cover facing the space is configured to partially suppress flow of the gas provided to the space in a direction along the gas distribution member to substantially uniformly distribute the gas in the space. The direction along the gas distribution member may be a horizontal direction and the gas provided to the space is directed in a substantially vertical upward direction. Apparatus and methods using the showerheads are also provided.
    Type: Application
    Filed: February 17, 2005
    Publication date: August 25, 2005
    Inventors: Young-Bae Choi, Moon-Sook Lee, Byoung-Jae Bae
  • Publication number: 20050155551
    Abstract: A deposition apparatus for depositing a predetermined material on a semiconductor substrate includes a chamber configured to perform a deposition process and a source gas supplier having a pulse fluid supplier configured to cyclically supply a source of a source gas to the chamber. The pulse fluid supplier includes a buffer configured to provide a space in which a fluid is received and a body including a first supply port connected to a source supplier, a second supply port connected to a carrier gas supply pipe, and a discharge port connected to a fluid supply pipe. The fluid supply pipe is configured such that fluid in the buffer flows through the fluid supply pipe to the chamber. The pulse fluid supplier includes a controller configured to selectively allow or prevent a source fluid supplied by the first supply port and a carrier gas supplied by the second supply port to flow to/from the buffer, and to allow or prevent a fluid in the buffer to flow to/from the fluid supply pipe.
    Type: Application
    Filed: September 28, 2004
    Publication date: July 21, 2005
    Inventors: Byoung-Jae Bae, Young-Bae Choi, Ji-Eun Lim