Patents by Inventor Hyungkyu Kim

Hyungkyu 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: 20160196776
    Abstract: A display substrate and a driving method thereof and a display device are provided. The display substrate includes two types of pixel rows arranged alternately and repeatedly. In one type of pixel row, a second sub-pixel, a third sub-pixel, a second sub-pixel, a first sub-pixel and a third sub-pixel are arranged successively and repeatedly. In the other type of pixel row, a third sub-pixel, a first sub-pixel, a second sub-pixel, a third sub-pixel and a second sub-pixel are arranged successively and repeatedly. A center line of any sub-pixel in a column direction in a pixel row does not coincide with a center line of any sub-pixel in the column direction in an adjacent pixel row.
    Type: Application
    Filed: December 30, 2014
    Publication date: July 7, 2016
    Inventors: Kai Yang, Xue Dong, Hyungkyu Kim, Haiwei Sun, Hao Zhang, Lingyun Shi, Renwei Guo, Peng Liu
  • Patent number: 9383498
    Abstract: Embodiments of the invention disclose a light-condensing sheet, a backlight and a liquid crystal display. The light-condensing sheet comprises a supporter and a plurality of flat light-condensing films provided on the supporter, and refractive indexes of the plurality of light-condensing films gradually increase from bottom to top.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: July 5, 2016
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Haiwei Sun, Hyungkyu Kim
  • Publication number: 20160112550
    Abstract: A mobile terminal, including: a main body in which a semicircle-shaped, cell chamber with an opened end is provided, wherein one inner side of the cell chamber is provided with a plurality of groups of electrode contacts, and the other inner side of the cell chamber is provided with a plurality of sliding tracks at locations corresponding to the plurality of groups of electrode contacts, respectively; and a semicircle-shaped cell having one side provided with a plurality of groups of electrodes configured to be engaged with the electrodes, and the other side provided with a plurality of positioning tracks configured to be engaged with the sliding tracks. The mobile terminal allows replacing a cell in a switched-on state without opening a back cover of the main body.
    Type: Application
    Filed: January 13, 2015
    Publication date: April 21, 2016
    Inventors: Chao YU, Rui LIU, Hao ZHANG, Hyungkyu KIM
  • Publication number: 20160049110
    Abstract: The present invention provides a display method and a display panel. The display panel comprises a plurality of rows of sub-pixels, the adjacent sub-pixels in the column direction having different colors and being staggered from each other by ½ of the sub-pixel in the row direction. The display method comprises: S1, generating an original image composed of a matrix of virtual pixels; S2, enabling the virtual pixels to correspond to sampling locations, wherein each sampling location corresponds to a virtual pixel; each sampling location is located between every two adjacent rows of the sub-pixels, and corresponds to a location between two sub-pixels in one row and a central location of a sub-pixel in the other row; and S3, calculating a display component of each sub-pixel in accordance with original components of corresponding colors of virtual pixels corresponding to the sub-pixel. The present invention is suitable for high resolution display.
    Type: Application
    Filed: September 29, 2014
    Publication date: February 18, 2016
    Inventors: Lingyun Shi, Xue Dong, Hyungkyu Kim, Haiwei Sun, Hao Zhang, Quanhua He, Kai Yang
  • Patent number: 9263943
    Abstract: A power supply circuit and a display device are provided. The power supply circuit includes: a load, a DC power supply; a DC booster circuit; a load feedback circuit configured to generate a converted voltage in accordance with the current passing through the load, integrate the converted voltage to generate an integrated voltage and generate a first triggering signal in accordance with the integrated voltage; and a control circuit configured to generate a second triggering signal in according with the boosted voltage, a DC power supply voltage and a reference voltage, generate a switching signal for controlling the operation of the DC booster circuit in accordance with the first triggering signal and the second triggering signal, and output the switching signal to the DC booster circuit.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: February 16, 2016
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Huijuan Chen, Hyungkyu Kim, Wei Sun
  • Publication number: 20160012763
    Abstract: Provided are a Gamma reference voltage generating device and a display. The Gamma reference voltage generating device comprises a Gamma reference voltage source and a Gamma reference voltage converting module, the Gamma reference voltage source being connected to the Gamma reference voltage converting module and configured to provide Gamma reference voltages, wherein the Gamma reference voltage generating device further comprises at least one temperature compensation circuit which is connected to the Gamma reference voltage converting module and configured to automatically adjust output voltages according to temperature change to compensate the Gamma reference voltages output by the Gamma reference voltage source through the Gamma reference voltage converting module. The display comprises the above Gamma reference voltage generating device, and thus can avoid poor display due to temperature influences.
    Type: Application
    Filed: July 25, 2014
    Publication date: January 14, 2016
    Applicants: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Huijuan CHEN, Hyungkyu KIM, Qian WANG
  • Publication number: 20150326115
    Abstract: A power supply circuit and a display device are provided. The power supply circuit includes: a load, a DC power supply; a DC booster circuit; a load feedback circuit configured to generate a converted voltage in accordance with the current passing through the load, integrate the converted voltage to generate an integrated voltage and generate a first triggering signal in accordance with the integrated voltage; and a control circuit configured to generate a second triggering signal in according with the boosted voltage, a DC power supply voltage and a reference voltage, generate a switching signal for controlling the operation of the DC booster circuit in accordance with the first triggering signal and the second triggering signal, and output the switching signal to the DC booster circuit.
    Type: Application
    Filed: November 4, 2014
    Publication date: November 12, 2015
    Applicants: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Huijuan CHEN, Hyungkyu KIM, Wei SUN
  • Publication number: 20150310815
    Abstract: The present invention provides a polarity inversion driving method for a liquid crystal display panel. The polarity inversion driving method comprises a step of performing polarity inversion on groups of pixel units according to a preset period, wherein each group of pixel units comprises rows of pixel units sequentially arranged in a same column, and a gate on-state duration of the first row of pixel unit in each group of pixel units is longer than the gate on-state duration of the remaining rows of pixel units in the group of pixel units. Correspondingly, the present invention further provides a polarity inversion driving device for a liquid crystal display panel. According to the present invention, when N-dot inversion driving is performed on the liquid crystal panel, charging times of respective rows of pixel units in each group of pixel units are closer.
    Type: Application
    Filed: September 29, 2014
    Publication date: October 29, 2015
    Inventors: Liguang DENG, Hyungkyu KIM, Hao ZHANG, Rui LIU, Yingming LIU
  • Publication number: 20150255025
    Abstract: The present disclosure provides a method for controlling brightness compensation for pixel units of a display device, comprising: driving white subpixels in the pixel units to compensate the pixel units for the brightness according to predetermined pixel units whose brightness is to be compensated for in the display device and compensating grayscale voltages corresponding to the brightness of the pixel units to be compensated.
    Type: Application
    Filed: September 19, 2014
    Publication date: September 10, 2015
    Inventors: Huijuan CHEN, Hyungkyu KIM, Duo ZHANG, Yang CHEN
  • Publication number: 20150130852
    Abstract: The present disclosure relates to a gamma voltage generating circuit, a controlling method thereof and a liquid crystal display. The gamma voltage generating circuit comprises an output end, a first reference voltage input end, a second reference voltage input end, a pre-stage voltage-dividing circuit, and a post-stage voltage-dividing circuit. A first pre-stage output end of the pre-stage voltage-dividing circuit is coupled to a first post-stage input end, and a second pre-stage output end is coupled to a second post-stage input end, so as to divide reference voltages input from the first and second reference voltage input ends, thereby to generate a primary gamma voltage. A post-stage output end of the post-stage voltage-dividing circuit is coupled to the output end of the gamma voltage generating circuit, so as to divide the primary gamma voltage, thereby to generate a secondary gamma voltage.
    Type: Application
    Filed: October 10, 2013
    Publication date: May 14, 2015
    Applicants: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Qian Wang, Hyungkyu Kim
  • Publication number: 20150124198
    Abstract: Embodiments of the invention disclose a light-condensing sheet, a backlight and a liquid crystal display. The light-condensing sheet comprises a supporter and a plurality of flat light-condensing films provided on the supporter, and refractive indexes of the plurality of light-condensing films gradually increase from bottom to top.
    Type: Application
    Filed: December 11, 2013
    Publication date: May 7, 2015
    Inventors: Haiwei Sun, Hyungkyu Kim
  • Publication number: 20140176527
    Abstract: The embodiment of the present invention provides a display driving method which can reduce the coupling effect due to the rapid changes of the voltage on the gate line and improve stability of display. The display driving method uses an overlapping scan mode, wherein every two rows of pixel units have two gate lines, the two gate lines drive the pixel units connected thereto respectively, each gate line group including N pairs of adjacent two gate lines, N being a natural number, said driving method comprising: providing a switching voltage signal to the odd gate lines in the gate line group sequentially; and providing a switching voltage signal to the even gate lines in the gate line group sequentially; wherein when the switching voltage signal on the odd gate lines is in the falling edge, the switching voltage signal on the even gate lines is in the rising edge.
    Type: Application
    Filed: December 20, 2013
    Publication date: June 26, 2014
    Inventors: Rui LIU, Hao ZHANG, Xue DONG, Hyungkyu KIM, Xiaobo XIE
  • Patent number: 8531445
    Abstract: A device for controlling the gate drive voltage in the liquid crystal display is provided in the invention. The device for controlling the gate drive voltage in the liquid crystal display according to the invention includes a turn-on voltage output terminal and a turn-off voltage output terminal for outputting a turn-on voltage and a turn-off voltage to a gate drive circuit, respectively, and a control circuit. The control circuit is coupled with the turn-on voltage output terminal and exerts an influence on the turn-on voltage so that the turn-on voltage has a ripple similar to that of the turn-off voltage.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: September 10, 2013
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventor: Hyungkyu Kim
  • Patent number: 8164558
    Abstract: The present invention relates to a driving method for a driver IC, comprising: detecting a polarity of a gate line being driven; when the polarity changes, the driver integrated circuit drives the gate line with a first mode signal; when the polarity does not change, the driver integrated circuit drives the gate line with a second mode signal, a driving current of the first mode signal is greater than that of the second mode signal. In the present invention, the driver IC drives a gate line in different driving modes according to a condition that a polarity of the droved gate line changes. Since a driving current of the first mode signal is greater than that of the second mode signal, the present invention is enabled to minimize a difference between charging delays of pixel electrodes on gate lines, improving a dim line phenomenon.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: April 24, 2012
    Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.
    Inventor: Hyungkyu Kim
  • Publication number: 20100231572
    Abstract: A device for controlling the gate drive voltage in the liquid crystal display is provided in the invention. The device for controlling the gate drive voltage in the liquid crystal display according to the invention includes a turn-on voltage output terminal and a turn-off voltage output terminal for outputting a turn-on voltage and a turn-off voltage to a gate drive circuit, respectively, and a control circuit. The control circuit is coupled with the turn-on voltage output terminal and exerts an influence on the turn-on voltage so that the turn-on voltage has a ripple similar to that of the turn-off voltage.
    Type: Application
    Filed: March 11, 2010
    Publication date: September 16, 2010
    Applicant: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Hyungkyu KIM
  • Publication number: 20090085907
    Abstract: The present invention relates to a driving method for a driver IC, comprising: detecting a polarity of a gate line being driven; when the polarity changes, the driver integrated circuit drives the gate line with a first mode signal; when the polarity does not change, the driver integrated circuit drives the gate line with a second mode signal, a driving current of the first mode signal is greater than that of the second mode signal. In the present invention, the driver IC drives a gate line in different driving modes according to a condition that a polarity of the droved gate line changes. Since a driving current of the first mode signal is greater than that of the second mode signal, the present invention is enabled to minimize a difference between charging delays of pixel electrodes on gate lines, improving a dim line phenomenon.
    Type: Application
    Filed: May 23, 2008
    Publication date: April 2, 2009
    Inventor: Hyungkyu KIM
  • Patent number: 6845138
    Abstract: A spacer grid with hybrid flow-mixing devices for nuclear fuel bundle is made up of an intersection of a plurality of thin straps at right angles to form a plurality of cells for receiving and supporting fuel rods. Each strap is composed of two types of strap units, called a primary strap unit and a secondary strap unit, which are alternately arranged along the strap. The primary strap unit is a strap section having a primary vane set, and a secondary strap unit is a strap section having a secondary vane set. The straps intersect such that, by primary and secondary strap units, each intersection forms a hybrid flow-mixing device around the top of each junction. The primary vane set, consisting of a trapezoidal primary vane stand and two bent primary mixing vanes on both sides, protrudes upwardly from the strap and is primarily for generating cross flow between channels.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: January 18, 2005
    Assignees: Korea Atomic Energy Research Institute, Korea Hydro & Nuclear Power Co., Ltd.
    Inventors: Taehyun Chun, Dongseok Oh, Wangkee In, Keenam Song, Hyungkyu Kim, Heungseok Kang, Kyungho Yoon, Younho Jung
  • Patent number: 6721384
    Abstract: A spacer grid for nuclear fuel assemblies is disclosed. This spacer grid has a plurality of side weld supports, that is, main supports, upper sub-supports and lower sub-supports, on its interlaced inner straps, with two flow mixing vanes integrally extending upward from each of the main supports. This spacer grid is fabricated by seam-welding the interlaced first and second inner straps to each other along the upper axial junction lines of the crossing main and upper sub-supports at the top of the intersections, and along the lower axial junction lines of the crossing lower sub-supports at the bottom of the intersections, thus forming side weld lines at the intersections.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: April 13, 2004
    Assignees: Korea Atomic Energy Research Institute, Korea Hydro & Nuclear Power Co., Ltd.
    Inventors: Dongseok Oh, Taehyun Chun, Wangkee In, Keenam Song, Hyungkyu Kim, Heungseok Kang, Kyungho Yoon, Younho Jung
  • Patent number: 6714619
    Abstract: A spacer grid for use in a nuclear fuel assembly has double-deflected vanes that guide an axial flow of coolant around fuel rods and thereby generate swirl flow. The vanes each have a double bend projecting upwardly from first inner straps and projecting toward one fuel rod. The vanes are sufficiently wide at their bases to prevent inadvertent deformation due to contact with fuel rods during an insertion of fuel rods into the cells. The vanes also make a smooth variation in the cross-sectional area of the coolant channel at the outlet of the spacer grid, thus reducing a loss of pressure during reactor operation.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: March 30, 2004
    Assignees: Korea Atomic Energy Research Institute, Korea Kydro & Nuclear Power Co., Ltd.
    Inventors: Dongseok Oh, Taehyun Chun, Wangkee In, Keenam Song, Hyungkyu Kim, Heungseok Kang, Kyungho Yoon, Younho Jung
  • Publication number: 20040005025
    Abstract: A spacer grid for use in a nuclear fuel assembly has double-deflected vanes that guide an axial flow of coolant around fuel rods and thereby generate swirl flow. The vanes each have a double bend projecting upwardly from first inner straps and projecting toward one fuel rod. The vanes are sufficiently wide at their bases to prevent inadvertent deformation due to contact with fuel rods during an insertion of fuel rods into the cells. The vanes also make a smooth variation in the cross-sectional area of the coolant channel at the outlet of the spacer grid, thus reducing a loss of pressure during reactor operation.
    Type: Application
    Filed: August 7, 2002
    Publication date: January 8, 2004
    Inventors: Dongseok Oh, Taehyun Chun, Wangkee In, Keenam Song, Hyungkyu Kim, Heungseok Kang, Kyungho Yoon, Younho Jung