Patents by Inventor Ki Han Kim

Ki Han 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).

  • Publication number: 20150205173
    Abstract: In a display panel and a method of manufacturing the display panel, the display panel includes a display substrate including a first electrode and a second electrode insulated from the first electrode and disposed on the first electrode, an opposite substrate including a third electrode facing the second electrode, and a liquid crystal layer interposed between the display substrate and the opposite substrate. The liquid crystal layer includes liquid crystal molecules, a reactive mesogen polymer, and nano-rods.
    Type: Application
    Filed: March 30, 2015
    Publication date: July 23, 2015
    Inventors: Soon-Joon RHO, Hyeok-Jin Lee, Ji-Hong Bae, Jun Ha Park, Hye-Lim Jang, Tae-Hoon Yoon, Dong-Han Song, Ki-Han Kim, Jung-Wook Kim
  • Patent number: 8994910
    Abstract: In a display panel and a method of manufacturing the display panel, the display panel includes a display substrate including a first electrode and a second electrode insulated from the first electrode and disposed on the first electrode, an opposite substrate including a third electrode facing the second electrode, and a liquid crystal layer interposed between the display substrate and the opposite substrate. The liquid crystal layer includes liquid crystal molecules, a reactive mesogen polymer, and nano-rods.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: March 31, 2015
    Assignees: Samsung Display Co., Ltd., Institute for Research & Industry Cooperation, PNU
    Inventors: Soon-Joon Rho, Hyeok-Jin Lee, Ji-Hong Bae, Jun-Ha Park, Hye-Lim Jang, Tae-Hoon Yoon, Dong-Han Song, Ki-Han Kim, Jung-Wook Kim
  • Patent number: 8854912
    Abstract: A module control circuit includes an input unit configured to receive a plurality of data signals from a plurality of data input/output pins and output an identification signal and an internal command signal. A latch unit is configured to latch the identification signal in accordance with a first enable signal to output a first group identification signal, latch the identification signal in accordance with a second enable signal to output a second group identification signal, and latch the internal command signal in accordance with the second enable signal to output a group command signal. A comparator is configured to compare the first group identification signal with the second group identification signal, and generate a selection signal. A multiplexer is configured to select one of the group command signal and a module command signal as an input command in response to the selection signal.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: October 7, 2014
    Assignee: SK Hynix Inc.
    Inventors: Ki Han Kim, Hyun Woo Lee
  • Patent number: 8836370
    Abstract: A semiconductor apparatus includes a power supply changing unit. The power supply changing unit is configured to receive an enable signal and power supply voltage, generate first voltage or second voltage according to the enable signal, change a voltage level of the second voltage according to a level signal, and supply the first voltage or the second voltage as a driving voltage of an internal circuit, wherein the internal circuit receives a first input signal to output a second input signal.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: September 16, 2014
    Assignee: SK Hynix Inc.
    Inventors: Ki Han Kim, Hyun Woo Lee, Dae Han Kwon, Chul Woo Kim, Soo Bin Lim
  • Patent number: 8803557
    Abstract: A comparator circuit includes a first comparator configured to store an offset during a first period, and to compare first and second input signals while compensating for the stored offset to generate a first comparison signal during a second period, a second comparator configured to compare the first and second input signals while compensating for an offset to generate a second comparison signal, and a compensation amount controller configured to control an offset compensation amount of the second comparator when the first and second comparison signals have different values.
    Type: Grant
    Filed: March 16, 2013
    Date of Patent: August 12, 2014
    Assignee: SK Hynix Inc.
    Inventor: Ki-Han Kim
  • Publication number: 20140176191
    Abstract: A comparator circuit includes a first comparator configured to store an offset during a first period, and to compare first and second input signals while compensating for the stored offset to generate a first comparison signal during a second period, a second comparator configured to compare the first and second input signals while compensating for an offset to generate a second comparison signal, and a compensation amount controller configured to control an offset compensation amount of the second comparator when the first and second comparison signals have different values.
    Type: Application
    Filed: March 16, 2013
    Publication date: June 26, 2014
    Applicant: SK HYNIX INC.
    Inventor: Ki-Han KIM
  • Publication number: 20140125895
    Abstract: A liquid crystal display panel includes a lower substrate, an upper substrate and a liquid crystal layer. The lower substrate includes a first base substrate and a pixel electrode formed on the first base substrate. The first base substrate includes a first sub pixel area and a second sub pixel area. The upper substrate includes a second base substrate and a common electrode formed on the second base substrate. The liquid crystal layer is interposed between the lower substrate and the upper substrate, and includes a first polymer disposed in the first sub pixel area and a second polymer disposed in the second pixel area. The first polymer has a first pre-tilt, and the second polymer has a second pre-tilt different from the first pre-tilt. Thus, a display quality of a liquid crystal display apparatus including the liquid crystal display panel may be enhanced.
    Type: Application
    Filed: February 22, 2013
    Publication date: May 8, 2014
    Applicants: Pusan National University Industry-University Cooperation Foundation, Samsung Display Co., Ltd.
    Inventors: Hoon KIM, Ki-Chul SHIN, Tae-Hoon YOON, Ki-Han KIM, Sun-Wook CHOI
  • Patent number: 8674733
    Abstract: A phase control circuit includes a first duty cycle correction circuit configured to correct a duty cycle of a clock signal; a delay locked loop configured to perform delay locking of an output signal of the first duty cycle correction circuit; and a second duty cycle correction circuit configured to correct a duty cycle of an output signal of the delay locked loop, wherein the first duty cycle correction circuit and the second duty cycle correction circuit are selectively activated depending upon an operating condition.
    Type: Grant
    Filed: August 27, 2011
    Date of Patent: March 18, 2014
    Inventor: Ki Han Kim
  • Publication number: 20140028361
    Abstract: A module control circuit includes an input unit configured to receive a plurality of data signals from a plurality of data input/output pins and output an identification signal and an internal command signal. A latch unit is configured to latch the identification signal in accordance with a first enable signal to output a first group identification signal, latch the identification signal in accordance with a second enable signal to output a second group identification signal, and latch the internal command signal in accordance with the second enable signal to output a group command signal. A comparator is configured to compare the first group identification signal with the second group identification signal, and generate a selection signal. A multiplexer is configured to select one of the group command signal and a module command signal as an input command in response to the selection signal.
    Type: Application
    Filed: January 10, 2013
    Publication date: January 30, 2014
    Applicant: SK HYNIX INC.
    Inventors: Ki Han KIM, Hyun Woo LEE
  • Patent number: 8634043
    Abstract: A transflective liquid crystal display includes a liquid crystal panel including a first substrate, a second substrate, a liquid crystal layer, the first and second substrates arranged to face each other and the liquid crystal layer between the first and second substrates, a reflection polarizer and an absorption polarizer at opposing outer sides of the liquid crystal panel, and a backlight unit at an outer side of the liquid crystal panel and supplying light to the inside of the liquid crystal panel. A reflective axis of the reflection polarizer is parallel with a transmissive axis of the absorption polarizer, the transmissive axis of the reflection polarizer perpendicularly crosses the transmissive axis of the absorption polarize, and the liquid crystal layer includes liquid crystal molecules and a dichroic dye.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: January 21, 2014
    Assignees: Samsung Display Co., Ltd., Pusan National University Industry-University Cooperation Foundation
    Inventors: Byoung Ho Cheong, Jae-Ho You, Soon-Joon Rho, Jae-Chang Kim, Tae-Hoon Yoon, Ki-Han Kim, Hye-Jung Jin
  • Patent number: 8581650
    Abstract: A duty cycle correction circuit includes: a duty cycle correction unit configured to correct a duty cycle of an input clock signal according to a duty cycle correction code and generate an output clock signal; a duty cycle detection section configured to detect a duty cycle of the output clock signal and generate an up-down signal; a noise detection signal generation section configured to detect a variation of the up-down signal and generate the noise detection signal; and a duty cycle correction control unit configured to generate the duty cycle correction code in response to the noise detection signal and the up-down signal.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: November 12, 2013
    Assignee: SK Hynix Inc.
    Inventors: Ki Han Kim, Ja Beom Koo
  • Patent number: 8519760
    Abstract: A device characteristic compensation circuit includes a device characteristic detection block configured to detect one or more of a frequency of a clock signal and characteristics of devices, and generate a control code signal according to a detection result; and an internal voltage regulation unit configured to regulate a level of an internal voltage in response to the control code signal and generate a corrected internal voltage.
    Type: Grant
    Filed: August 27, 2011
    Date of Patent: August 27, 2013
    Assignee: SK Hynix Inc.
    Inventors: Ki Han Kim, Hyun Woo Lee
  • Publication number: 20130215346
    Abstract: A liquid crystal display is provided. A liquid crystal display according to an exemplary embodiment of the present invention includes a first substrate, a second substrate facing the first substrate, and a liquid crystal layer interposed between the first substrate and the second substrate, wherein the liquid crystal layer includes liquid crystal molecules and nanoparticles including a hydrophobic group having a chain structure and a hydrophilic group.
    Type: Application
    Filed: July 30, 2012
    Publication date: August 22, 2013
    Applicants: Pusan National University Industry-University Cooperation Foundation, SAMSUNG DISPLAY CO., LTD.
    Inventors: Gak Seok LEE, Hee Seop KIM, Ki Chul SHIN, Ki-Han KIM, Byung Wok PARK, Tae-Hoon YOON, Eun Young JEON, Ji-Hoon LEE
  • Patent number: 8487679
    Abstract: A data output control circuit includes a DLL circuit and a delay detection unit. The DLL circuit is configured to generate a second internal clock by delaying a first internal clock generated from an external clock, compare a phase of the first internal clock with a phase of the second internal clock, and generate a DLL clock. The delay detection unit is configured to generate a sense signal whose logic level is changed according to a comparison result of a set time interval and a delay time interval during which the first internal clock is delayed in order to generate the second internal clock.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: July 16, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventors: Ki Han Kim, Hyun Woo Lee
  • Publication number: 20130154702
    Abstract: A duty cycle correction circuit includes: a duty cycle correction unit configured to correct a duty cycle of an input clock signal according to a duty cycle correction code and generate an output clock signal; a duty cycle detection section configured to detect a duty cycle of the output clock signal and generate an up-down signal; a noise detection signal generation section configured to detect a variation of the up-down signal and generate the noise detection signal; and a duty cycle correction control unit configured to generate the duty cycle correction code in response to the noise detection signal and the up-down signal.
    Type: Application
    Filed: August 1, 2012
    Publication date: June 20, 2013
    Applicant: SK hynix Inc.
    Inventors: Ki Han KIM, Ja Beom KOO
  • Publication number: 20130135038
    Abstract: A semiconductor apparatus includes a power supply changing unit. The power supply changing unit is configured to receive an enable signal and power supply voltage, generate first voltage or second voltage according to the enable signal, change a voltage level of the second voltage according to a level signal, and supply the first voltage or the second voltage as a driving voltage of an internal circuit, wherein the internal circuit receives a first input signal to output a second input signal.
    Type: Application
    Filed: September 12, 2012
    Publication date: May 30, 2013
    Applicants: Korea University Industrial & Academic Collaboration Foundation, SK HYNIX INC.
    Inventors: Ki Han KIM, Hyun Woo LEE, Dae Han KWON, Chul Woo KIM, Soo Bin LIM
  • Patent number: 8411514
    Abstract: An output enable signal generation circuit includes a latency decoder, a latch unit, a latency multiplexer, and an enable setting unit. The latency decoder is configured to decode a mode register set code and generate first and second CAS latency information. The latch unit is configured to output the latched first and second latency information as first and second latency signals. The latency multiplexer is configured to output the first or second latency signal as an output CAS latency signal in response to a chip select signal. The enable setting unit is configured to set an enable timing of an output enable signal.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: April 2, 2013
    Assignee: SK Hynix Inc.
    Inventors: Ki Han Kim, Hyun Woo Lee
  • Publication number: 20130077038
    Abstract: In a display panel and a method of manufacturing the display panel, the display panel includes a display substrate including a first electrode and a second electrode insulated from the first electrode and disposed on the first electrode, an opposite substrate including a third electrode facing the second electrode, and a liquid crystal layer interposed between the display substrate and the opposite substrate. The liquid crystal layer includes liquid crystal molecules, a reactive mesogen polymer, and nano-rods.
    Type: Application
    Filed: June 15, 2012
    Publication date: March 28, 2013
    Applicants: INSTITUTE FOR RESEARCH & INDUSTRY COOPERATION, PNU, SAMSUNG DISPLAY CO., LTD.
    Inventors: Soon-Joon RHO, Hyeok-Jin LEE, Ji-Hong BAE, Jun-Ha PARK, Hye-Lim JANG, Tae-Hoon YOON, Dong-Han SONG, Ki-Han KIM, Jung-Wook KIM
  • Patent number: 8390364
    Abstract: A semiconductor apparatus for generating an internal voltage includes a control code output block and an internal voltage generation block. The control code output block is configured to output a variable code having a code value corresponding to a voltage level of an internal voltage. The internal voltage generation block is configured to compare the variable code to a setting code and controls the voltage level of the internal voltage according to the comparison.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: March 5, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventors: Ki Han Kim, Hyun Woo Lee, Won Joo Yun
  • Patent number: 8373471
    Abstract: A semiconductor apparatus includes: an update pulse generating unit configured to generate an update pulse every first period based on a frequency of a clock, and a control unit configured to control an output signal in response to an input signal and the update pulse, so that the output signal is varied based on the input signal.
    Type: Grant
    Filed: December 31, 2010
    Date of Patent: February 12, 2013
    Assignee: SK Hynix Inc.
    Inventors: Ki Han Kim, Hyun Woo Lee