Patents by Inventor Hyeon Seok Bae

Hyeon Seok Bae 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: 10796619
    Abstract: A display device a includes: a display portion including pixels arranged in a matrix form; gate lines extending in a row direction for each pixel row and connected to the pixels; and a gate driver which applies a gate signal of a gate-on voltage to the plurality of gate lines. The gate driver applies the gate signal in the order of a k-th gate line, a (k+3)-th gate line, a (k+1)-th gate line, a (k+4)-th gate line, a (k+2)-th gate line, and a (k+5)-th gate line, where k is an integer greater than 1, and pixels connected to the k-th gate line and the (k+3)-th gate line display a first color, pixels connected to the (k+1)-th gate line and the (k+4)-th gate line display a second color, and pixels connected to the (k+2)-th gate line and the (k+5)-th gate line display a third color.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: October 6, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyeon Seok Bae, Haeng Won Park
  • Publication number: 20180204499
    Abstract: A display device a includes: a display portion including pixels arranged in a matrix form; gate lines extending in a row direction for each pixel row and connected to the pixels; and a gate driver which applies a gate signal of a gate-on voltage to the plurality of gate lines. The gate driver applies the gate signal in the order of a k-th gate line, a (k+3)-th gate line, a (k+1)-th gate line, a (k+4)-th gate line, a (k+2)-th gate line, and a (k+5)-th gate line, where k is an integer greater than 1, and pixels connected to the k-th gate line and the (k+3)-th gate line display a first color, pixels connected to the (k+1)-th gate line and the (k+4)-th gate line display a second color, and pixels connected to the (k+2)-th gate line and the (k+5)-th gate line display a third color.
    Type: Application
    Filed: January 11, 2018
    Publication date: July 19, 2018
    Inventors: Hyeon Seok BAE, Haeng Won PARK
  • Patent number: 9865217
    Abstract: A method of driving a display panel includes generating a reference gate signal delayed by a predetermined period from a gate signal applied to a gate line disposed in a first end area of the display panel, the first end area being an area in which a RC delay of a data line is the smallest, receiving an input gate signal applied to a gate line disposed in a second area of the display panel, the second area being an area in which the RC delay of the data line is the largest; and selectively controlling a delay time of each of the plurality of gate signals applied to each of the plurality of gate lines according to a result of comparison between the reference gate signal and the input gate signal.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: January 9, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Myung-Ho Won, Dal-Jung Kwon, Haeng-Won Park, Hyeon-Seok Bae, Seung-Hoon Jung, Ho-Sup Choi
  • Patent number: 9202429
    Abstract: A 3D-capable image display device includes: a display panel having a plurality of pixels and a plurality of data lines; a gamma reference voltages generator for generating a plurality of gamma reference voltages including positive gamma reference voltages and negative gamma reference voltages; a data lines driver for converting an image signal into corresponding data line drive voltages based on the plurality of gamma reference voltages; and a signal controller operating according to a mode selection signal including information for selecting one of different 3D driving methods, wherein when a gap between the positive gamma reference voltages and the negative gamma reference voltages is referred to as a black gap, and size of the black gap is variable based on the selected 3D driving method.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: December 1, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyeon Seok Bae, Haeng Won Park, Duck Yong Ahn, Min Jun Choi, Joo Young Choi
  • Publication number: 20150302816
    Abstract: A method of driving a display panel includes generating a reference gate signal delayed by a predetermined period from a gate signal applied to a gate line disposed in a first end area of the display panel, the first end area being an area in which a RC delay of a data line is the smallest, receiving an input gate signal applied to a gate line disposed in a second area of the display panel, the second area being an area in which the RC delay of the data line is the largest; and selectively controlling a delay time of each of the plurality of gate signals applied to each of the plurality of gate lines according to a result of comparison between the reference gate signal and the input gate signal.
    Type: Application
    Filed: March 27, 2015
    Publication date: October 22, 2015
    Inventors: Myung-Ho WON, Dal-Jung KWON, Haeng-Won PARK, Hyeon-Seok BAE, Seung-Hoon JUNG, Ho-Sup CHOI
  • Publication number: 20150206496
    Abstract: A 3D-capable image display device includes: a display panel having a plurality of pixels and a plurality of data lines; a gamma reference voltages generator for generating a plurality of gamma reference voltages including positive gamma reference voltages and negative gamma reference voltages; a data lines driver for converting an image signal into corresponding data line drive voltages based on the plurality of gamma reference voltages; and a signal controller operating according to a mode selection signal including information for selecting one of different 3D driving methods, wherein when a gap between the positive gamma reference voltages and the negative gamma reference voltages is referred to as a black gap, and size of the black gap is variable based on the selected 3D driving method.
    Type: Application
    Filed: June 2, 2014
    Publication date: July 23, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Hyeon Seok BAE, Haeng Won PARK, Duck Yong AHN, Min Jun CHOI, Joo Young CHOI
  • Patent number: 8823629
    Abstract: A method of driving a display device includes analyzing input data of the display device to confirm whether there is a predetermined image pattern in an image corresponding to the input data, where a common voltage is distorted to an extent that a clock signal for a gate driver of the display device is distorted when the display device displays the image including the predetermined image pattern, and changing a slew rate of an output buffer of a data driver of the display device based on a result of the analyzing the input data.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: September 2, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyeon Seok Bae, Gyu Ik Kim, Choong Seob Oh, Hoon Jung, Seung Hoon Han
  • Patent number: 8723853
    Abstract: A driving device includes an output timing controller which controls an output timing of a first driving voltage and a second driving voltage respectively generated from a first voltage generator and a second voltage generator. A third driving voltage output from the output timing controller is provided to a first data driver and a second data driver, and also provided to a gamma voltage generator to generate a plurality of gamma voltages. Accordingly, a reverse electric potential between the third driving voltage and the gamma voltages is prevented from being generated in the first and second data drivers, therefore, preventing the first and second data drivers from being damaged.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: May 13, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyeon-Seok Bae, Sang-Hoon Lee, Cheol-Ho Lee, Hun-Tae Kim
  • Publication number: 20130265347
    Abstract: A display apparatus a display panel that includes pixels arranged in rows by columns, which are connected to gate lines and data lines, a timing controller that outputs control signals and data signals, a gate driver that applies gate signals to the pixels through the gate lines, and a data driver that receives the data signals and applies data voltages corresponding to the data signals to the pixels through the data lines. The timing controller checks whether a pattern of data values corresponds to a checker pattern, in which black and white patterns are alternately repeated in a row direction and a column direction, checks whether an area of the checker pattern is equal to or greater than a predetermined area of the display panel, and compensates for the data signals in accordance with the checked result.
    Type: Application
    Filed: March 5, 2013
    Publication date: October 10, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyeon Seok BAE, Jae-Yong KWON, Duckyong AHN, Jaeeun UM, Kwangyoul LEE, Sangchul LEE, Heung-Sik TAE
  • Publication number: 20130113848
    Abstract: A method of driving a display device includes analyzing input data of the display device to confirm whether there is a predetermined image pattern in an image corresponding to the input data, where a common voltage is distorted to an extent that a clock signal for a gate driver of the display device is distorted when the display device displays the image including the predetermined image pattern, and changing a slew rate of an output buffer of a data driver of the display device based on a result of the analyzing the input data.
    Type: Application
    Filed: March 22, 2012
    Publication date: May 9, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyeon Seok BAE, Gyu Ik KIM, Choong Seob OH, Hoon JUNG, Seung Hoon HAN
  • Patent number: 8379011
    Abstract: A driving device includes an output timing controller which controls an output timing of a first driving voltage and a second driving voltage respectively generated from a first voltage generator and a second voltage generator. A third driving voltage output from the output timing controller is provided to a first data driver and a second data driver, and also provided to a gamma voltage generator to generate a plurality of gamma voltages. Accordingly, a reverse electric potential between the third driving voltage and the gamma voltages is prevented from being generated in the first and second data drivers, therefore, preventing the first and second data drivers from being damaged.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: February 19, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyeon-Seok Bae, Sang-Hoon Lee, Cheol-Ho Lee, Hun-Tae Kim
  • Patent number: 8339347
    Abstract: A liquid crystal display includes; a liquid crystal panel, and a DC-DC converter which receives an input voltage to generate an analog drive voltage and a gate-on voltage used to operate the liquid crystal panel, wherein the DC-DC converter includes a pulse width modulation circuit which modulates a pulse width of the analog drive voltage and the gate-on voltage, a boost converter which boosts the input voltage to output the analog drive voltage, and a charge pump which boosts one of the input voltage and the analog drive voltage to output the gate-on voltage, wherein when a high voltage stress test is performed, the DC-DC converter outputs the analog drive voltage boosted to a voltage level higher than a voltage level of the analog drive voltage during a normal operation, and outputs the gate-on voltage having a voltage level substantially equal to a voltage level of the gate-on voltage during the normal operation.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: December 25, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyeon-Seok Bae, Sang-Chul Lee, Kwang-Youl Lee
  • Patent number: 8139056
    Abstract: A power generating module is provided in an LCD where the power generating module includes a first driving voltage generator, a second driving voltage generator and an output deviation controller. The first driving voltage generator generates and outputs a first set of LCD driving voltages including a first liquid crystal driving voltage and a first gate-on-voltage. The second driving voltage generator generates and outputs a similar second set of LCD driving voltages. The output deviation controller controls the first and second driving voltage generators using one or more feedback signals each corresponding to a potential difference between counterpart output voltages of the first driving voltage and the second driving voltage to reduce output deviations between those counterpart output voltages.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: March 20, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Cheol Ho Lee, Hyeon Seok Bae, Sang Chul Lee
  • Publication number: 20100085348
    Abstract: A display device and a method of driving the same are provided. The display device includes a display panel including a plurality of pixels defined in an area where a plurality of gate lines and data lines cross one another, a clock generator generating a gate clock signal using a clock generation control signal provided from a timing controller and a gate-on voltage, and a gate driver providing a gate signal to the gate lines in response to the gate clock signal. The gate signal includes a pre-charge period having a first gate-on level and a main-charge period having a second gate-on level that is higher than the first gate-on level.
    Type: Application
    Filed: May 20, 2009
    Publication date: April 8, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hyeon-Seok Bae, Sang -Chul Lee, Kwang-Youl Lee, Hyun-Ho Lee
  • Publication number: 20100033415
    Abstract: A liquid crystal display includes; a liquid crystal panel, and a DC-DC converter which receives an input voltage to generate an analog drive voltage and a gate-on voltage used to operate the liquid crystal panel, wherein the DC-DC converter includes a pulse width modulation circuit which modulates a pulse width of the analog drive voltage and the gate-on voltage, a boost converter which boosts the input voltage to output the analog drive voltage, and a charge pump which boosts one of the input voltage and the analog drive voltage to output the gate-on voltage, wherein when a high voltage stress test is performed, the DC-DC converter outputs the analog drive voltage boosted to a voltage level higher than a voltage level of the analog drive voltage during a normal operation, and outputs the gate-on voltage having a voltage level substantially equal to a voltage level of the gate-on voltage during the normal operation.
    Type: Application
    Filed: March 24, 2009
    Publication date: February 11, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyeon-Seok BAE, Sang-Chul LEE, Kwang-Youl LEE
  • Publication number: 20090167984
    Abstract: A backlight unit, and a display device having the backlight unit, includes a light source, the light source formed to directly illuminate a display panel, and an optical plate arranged over the light source, wherein the optical plate includes a first surface and a second surface that faces the first surface, and the first surface is different in height from the second surface.
    Type: Application
    Filed: September 26, 2008
    Publication date: July 2, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-Hoon LEE, Hyeon-Seok BAE, Cheol-Ho LEE
  • Publication number: 20090021507
    Abstract: A driving device includes an output timing controller which controls an output timing of a first driving voltage and a second driving voltage respectively generated from a first voltage generator and a second voltage generator. A third driving voltage output from the output timing controller is provided to a first data driver and a second data driver, and also provided to a gamma voltage generator to generate a plurality of gamma voltages. Accordingly, a reverse electric potential between the third driving voltage and the gamma voltages is prevented from being generated in the first and second data drivers, therefore, preventing the first and second data drivers from being damaged.
    Type: Application
    Filed: June 25, 2008
    Publication date: January 22, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyeon-Seok BAE, Sang-Hoon LEE, Cheol-Ho LEE, Hun-Tae KIM
  • Publication number: 20080084412
    Abstract: A liquid crystal display (“LCD”) device and method of driving the same capable of eliminating pressure induced light leakage includes a liquid crystal display comprising an LCD panel having a plurality of gate lines, a plurality of data lines formed in a direction to intersect the plurality of gate lines, and a plurality of unit pixels respectively formed at intersection regions of the plurality of gate and data lines; a power circuit for generating a plurality of driving voltages for driving the LCD panel; a gate driving unit for driving the plurality of gate lines; a source driving unit for driving the plurality of data lines; and a timing control circuit for generating plurality of control signals for controlling the gate and source driving units, wherein the timing control circuit drives the LCD panel in a non-electric field state every predetermined frame.
    Type: Application
    Filed: August 21, 2007
    Publication date: April 10, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyeon Seok BAE, Sang Chul LEE
  • Publication number: 20080007505
    Abstract: A driving apparatus includes a timing controller, a gate driver, and a pulse width controller. The timing controller generates a gate output enable signal having a width which is used for defining on-voltage widths of gate driving signals. The gate driver sequentially outputs the gate driving signals corresponds to a plurality of gate lines. The gate driver is controlled to prevent overlapping of the gate driving signals. The pulse width controller includes a signal generator and a converter. The signal generator receives two of the gate driving signals from two adjacent gate lines, compares the two gate driving signals, and generates a detection signal that detects an overlapping area of the two gate driving signals. The converter converts the detection signal to a pulse width control signal and feeds the pulse width control signal back to the timing controller. The timing controller receives the pulse width control signal and adjusts the width of the gate output enable signal.
    Type: Application
    Filed: March 30, 2007
    Publication date: January 10, 2008
    Inventors: Ho-young Kim, Hyeon-seok Bae
  • Publication number: 20070146355
    Abstract: Provided are a driver that corrects a distorted image signal and a display device including the driver. The driver includes a control voltage signal generator which converts the voltage level of a control voltage signal according to an external signal, a clock signal generator which generates a clock signal whose duty ratio changes according to the voltage level of the control voltage signal, and a DC-DC converter which converts the level of an input voltage according to the duty ratio of the clock signal supplied from the clock signal generator and outputs the input voltage whose level is converted as a driving voltage.
    Type: Application
    Filed: December 21, 2006
    Publication date: June 28, 2007
    Inventor: Hyeon-seok Bae