Patents by Inventor Su-Han Woo

Su-Han Woo 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: 11276357
    Abstract: A liquid crystal display device includes a liquid crystal display panel, a light source configured to provide the liquid crystal display panel with a light, a vertical blank detector circuit configured to calculate a counting value of a vertical blank period of a frame by counting a synchronization signal, a luminance correction value calculator circuit configured to calculate a luminance correction value by comparing the counting value of the vertical blank period with a plurality of reference counting values, and a light source driver configured to generate a light source driving signal and provide the light source driving signal to the light source. The light source driving signal has a normal level corresponding to a normal luminance value in an active period of the frame and has a correction level corresponding to the luminance correction value in the vertical blank period of the frame.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: March 15, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jahun Koo, Jinho Park, Jong Deuk Moon, Su-Han Woo, Kyung-Hun Lee, Kyung-Uk Choi
  • Publication number: 20210134235
    Abstract: A liquid crystal display device includes a liquid crystal display panel, a light source configured to provide the liquid crystal display panel with a light, a vertical blank detector circuit configured to calculate a counting value of a vertical blank period of a frame by counting a synchronization signal, a luminance correction value calculator circuit configured to calculate a luminance correction value by comparing the counting value of the vertical blank period with a plurality of reference counting values, and a light source driver configured to generate a light source driving signal and provide the light source driving signal to the light source. The light source driving signal has a normal level corresponding to a normal luminance value in an active period of the frame and has a correction level corresponding to the luminance correction value in the vertical blank period of the frame.
    Type: Application
    Filed: January 11, 2021
    Publication date: May 6, 2021
    Inventors: JAHUN KOO, JINHO PARK, JONG DEUK MOON, SU-HAN WOO, KYUNG-HUN LEE, KYUNG-UK CHOI
  • Patent number: 10923044
    Abstract: A method of adjusting luminance of a backlight unit included in a liquid crystal display device that performs inversion driving is provided. The method derives a positive polarity histogram and a negative polarity histogram of an image frame based on image frame data, corresponding to the image frame, and a data polarity pattern for implementing the image frame, derives a luminance compensation value according to data polarity dominance of the image frame by analyzing the positive polarity histogram and the negative polarity histogram, and applies the luminance compensation value to the luminance of the backlight unit during a portion of a time period of the image frame.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: February 16, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jahun Koo, Su-Han Woo, Kyung-Hun Lee
  • Patent number: 10909935
    Abstract: A liquid crystal display device includes a liquid crystal display panel, a light source configured to provide the liquid crystal display panel with a light, a vertical blank detector circuit configured to calculate a counting value of a vertical blank period of a frame by counting a synchronization signal, a luminance correction value calculator circuit configured to calculate a luminance correction value by comparing the counting value of the vertical blank period with a plurality of reference counting values, and a light source driver configured to generate a light source driving signal and provide the light source driving signal to the light source. The light source driving signal has a normal level corresponding to a normal luminance value in an active period of the frame and has a correction level corresponding to the luminance correction value in the vertical blank period of the frame.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: February 2, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jahun Koo, Jinho Park, Jong Deuk Moon, Su-Han Woo, Kyung-Hun Lee, Kyung-Uk Choi
  • Publication number: 20200175930
    Abstract: A method of adjusting luminance of a backlight unit included in a liquid crystal display device that performs inversion driving is provided. The method derives a positive polarity histogram and a negative polarity histogram of an image frame based on image frame data, corresponding to the image frame, and a data polarity pattern for implementing the image frame, derives a luminance compensation value according to data polarity dominance of the image frame by analyzing the positive polarity histogram and the negative polarity histogram, and applies the luminance compensation value to the luminance of the backlight unit during a portion of a time period of the image frame.
    Type: Application
    Filed: October 18, 2019
    Publication date: June 4, 2020
    Inventors: Jahun KOO, Su-Han WOO, Kyung-Hun LEE
  • Publication number: 20200066215
    Abstract: A liquid crystal display device includes a liquid crystal display panel, a light source configured to provide the liquid crystal display panel with a light, a vertical blank detector circuit configured to calculate a counting value of a vertical blank period of a frame by counting a synchronization signal, a luminance correction value calculator circuit configured to calculate a luminance correction value by comparing the counting value of the vertical blank period with a plurality of reference counting values, and a light source driver configured to generate a light source driving signal and provide the light source driving signal to the light source. The light source driving signal has a normal level corresponding to a normal luminance value in an active period of the frame and has a correction level corresponding to the luminance correction value in the vertical blank period of the frame.
    Type: Application
    Filed: July 9, 2019
    Publication date: February 27, 2020
    Inventors: Jahun Koo, Jinho Park, Jong Deuk Moon, Su-Han Woo, Kyung-Hun Lee, Kyung-Uk Choi
  • Publication number: 20180124957
    Abstract: Provided are heat radiation sheet and method of manufacturing the same.
    Type: Application
    Filed: August 7, 2017
    Publication date: May 3, 2018
    Inventors: Sung Chul YOON, Cheol Heung AHN, Dong Hyun KIM, Hak-Soo KIM, Su-Han WOO, Jin GO, Won Jae CHOI, Dae-Bok PARK
  • Patent number: 9961809
    Abstract: Provided are heat radiation sheet and method of manufacturing the same.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: May 1, 2018
    Assignee: SHINWHA INTERTEK CORP
    Inventors: Sung Chul Yoon, Cheol Heung Ahn, Dong Hyun Kim, Hak-Soo Kim, Su-Han Woo, Jin Go, Won Jae Choi, Dae-Bok Park
  • Patent number: 9928800
    Abstract: A display apparatus includes a display panel. The display panel includes a high sub-pixel, a low sub-pixel and a toggle voltage input circuit. The high sub-pixel may include a first switching element connected to a gate line extending in a first direction and a data line extending in a second direction crossing with the first direction. The low sub-pixel may include a second switching element connected to the gate line and the data line and disposed opposite to the high sub-pixel with reference to the gate line, and a third switching element connected to the second switching element and a storage line. The toggle voltage input circuit may be connected to the storage line to transmit a toggle voltage to the low sub-pixel. The toggle voltage may be capable of being varied periodically.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: March 27, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong-Woon Kim, Ja-Hun Koo, Kyu-Jin Park, Su-Han Woo
  • Patent number: 9870750
    Abstract: A liquid crystal display device includes a gate driving unit connected to an ith gate line and a first compensation line, a data driving unit connected to a jth data line and a pixel unit including a first switching element including a first electrode connected to the jth data line, a pixel electrode connected to second electrode of the first switching element, and a compensation capacitor including a first electrode connected to the first compensation line and a second electrode connected to the pixel electrode, where the gate driving unit includes a second switching element including a gate electrode connected to an i?1th gate line, a first electrode connected to a reset line, and a second electrode connected to the first compensation line, and a third switching element including a gate electrode connected to an i+1th gate line and a first electrode connected to the first compensation line.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: January 16, 2018
    Assignee: SAMSUNG DISPLAY CO. LTD.
    Inventors: Ja Hun Koo, Hak Sun Kim, Su Han Woo, Kyung Hun Lee
  • Publication number: 20170110079
    Abstract: A liquid crystal display device includes a gate driving unit connected to an ith gate line and a first compensation line, a data driving unit connected to a jth data line and a pixel unit including a first switching element including a first electrode connected to the jth data line, a pixel electrode connected to second electrode of the first switching element, and a compensation capacitor including a first electrode connected to the first compensation line and a second electrode connected to the pixel electrode, where the gate driving unit includes a second switching element including a gate electrode connected to an i?1th gate line, a first electrode connected to a reset line, and a second electrode connected to the first compensation line, and a third switching element including a gate electrode connected to an i+1th gate line and a first electrode connected to the first compensation line.
    Type: Application
    Filed: May 5, 2016
    Publication date: April 20, 2017
    Inventors: Ja Hun KOO, Hak Sun KIM, Su Han WOO, Kyung Hun LEE
  • Publication number: 20170047037
    Abstract: A display apparatus includes a display panel. The display panel includes a high sub-pixel, a low sub-pixel and a toggle voltage input circuit. The high sub-pixel may include a first switching element connected to a gate line extending in a first direction and a data line extending in a second direction crossing with the first direction. The low sub-pixel may include a second switching element connected to the gate line and the data line and disposed opposite to the high sub-pixel with reference to the gate line, and a third switching element connected to the second switching element and a storage line. The toggle voltage input circuit may be connected to the storage line to transmit a toggle voltage to the low sub-pixel. The toggle voltage may be capable of being varied periodically.
    Type: Application
    Filed: May 3, 2016
    Publication date: February 16, 2017
    Inventors: JONG-WOON KIM, JA-HUN KOO, KYU-JIN PARK, SU-HAN WOO
  • Patent number: 9244310
    Abstract: A liquid crystal display device includes an array substrate, an opposite substrate and a liquid crystal display layer. The array substrate includes a pixel electrode and a lower reactive mesogen layer. The pixel electrode includes a plurality of slit portions disposed on a plurality of domains in different directions. The lower reactive mesogen layer is disposed on the pixel electrode to induce an inclined direction of liquid crystal molecules. The opposite substrate includes an upper substrate. An upper reactive mesogen layer is disposed on a common electrode of the opposite substrate. The liquid crystal layer includes liquid crystal molecules arranged to have a pretilt angle between a surface of the lower reactive mesogen layer and a surface of the upper reactive mesogen layer.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: January 26, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Myeong-Ha Kye, Jun-Hyup Lee, Jae-Jin Lyu, Seung-Beom Park, Jong-Ho Son, Ji-Won Sohn, Hoon Kim, Min-Goo Seok, Jun-Hee Na, Min-Jae Kim, Su-Han Woo
  • Patent number: 9036122
    Abstract: An array substrate includes a lower substrate, a switching element and a pixel electrode. In the lower substrate, unit pixel areas are each divided into a plurality of domains. The switching element is disposed on the lower substrate and transmits a pixel signal. The pixel electrode is disposed on the unit pixel area and is electrically connected to the switching element. The pixel electrode includes a plurality of branch portions disposed thereon. A portion of the branch portions is longitudinally extended in a zigzag shape along different directions in correspondence with the domains.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: May 19, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Su-Jeong Kim, Jang-Kun Song, Sung-Hwan Hong, Kee-Bum Park, Seon-Ah Cho, Hye-Ran You, Su-Han Woo, Jae-Jin Lyu, Eun Cho
  • Patent number: 8872816
    Abstract: A three-dimensional image display device includes: a display panel assembly including a display panel including pixels which alternately displays first and second images, and a data driver which transmits data voltages to the pixels; a backlight unit which provides light to the display panel assembly; and a shutter member including first and second shutters, where the backlight unit emits the light during light emitting periods, the light emitting periods includes first light emitting periods, during which the first image is displayed, and second light emitting periods, during which the second image is displayed, the first light emitting periods and the second light emitting periods alternate, and the first shutter is opened during at least two open periods, which are between neighboring second light emitting periods of the second light emitting periods and temporally spaced apart from each other.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: October 28, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seong Il Kim, Bae Won Lee, San Seong Seomun, Ja Hun Koo, Woon-Rok Jang, Su-Han Woo
  • Publication number: 20140293203
    Abstract: A liquid crystal display device includes an array substrate, an opposite substrate and a liquid crystal display layer. The array substrate includes a pixel electrode and a lower reactive mesogen layer. The pixel electrode includes a plurality of slit portions disposed on a plurality of domains in different directions. The lower reactive mesogen layer is disposed on the pixel electrode to induce an inclined direction of liquid crystal molecules. The opposite substrate includes an upper substrate. An upper reactive mesogen layer is disposed on a common electrode of the opposite substrate. The liquid crystal layer includes liquid crystal molecules arranged to have a pretilt angle between a surface of the lower reactive mesogen layer and a surface of the upper reactive mesogen layer.
    Type: Application
    Filed: June 13, 2014
    Publication date: October 2, 2014
    Inventors: Myeong-Ha KYE, Jun-Hyup LEE, Jae-Jin LYU, Seung-Beom PARK, Jong-Ho SON, Ji-Won SOHN, Hoon KIM, Min-Goo SEOK, Jun-Hee NA, Min-Jae KIM, Su-Han WOO
  • Patent number: 8755013
    Abstract: A liquid crystal display device includes an array substrate, an opposite substrate and a liquid crystal display layer. The array substrate includes a pixel electrode and a lower reactive mesogen layer. The pixel electrode includes a plurality of slit portions disposed on a plurality of domains in different directions. The lower reactive mesogen layer is disposed on the pixel electrode to induce an inclined direction of liquid crystal molecules. The opposite substrate includes an upper substrate. An upper reactive mesogen layer is disposed on a common electrode of the opposite substrate. The liquid crystal layer includes liquid crystal molecules arranged to have a pretilt angle between a surface of the lower reactive mesogen layer and a surface of the upper reactive mesogen layer.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: June 17, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Myeong-Ha Kye, Jun-Hyup Lee, Jae-Jin Lyu, Seung-Beom Park, Jong-Ho Son, Ji-Won Sohn, Hoon Kim, Min-Goo Seok, Jun-Hee Na, Min-Jae Kim, Su-Han Woo
  • Patent number: 8564753
    Abstract: A display substrate includes a base substrate and a unitary indivisible pixel electrode. The base substrate includes a gate line, a data line crossing the gate line and a thin-film transistor electrically connected to the gate line and the data line formed thereon. A pixel area is defined on the base substrate. The unitary indivisible pixel electrode includes a plurality of branch electrodes formed on the pixel area and a connection electrode connecting the branch electrodes to each other. Each of the branch electrodes includes a bent portion and the bent portions of adjacent branch electrodes are spaced apart from each other.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: October 22, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hye-Ran You, Su-Han Woo, Su-Jeong Kim, Jae-Jin Lyu, Seung-Beom Park, Yoon-Sung Um
  • Publication number: 20130106836
    Abstract: A three-dimensional image display device includes: a display panel assembly including a display panel including pixels which alternately displays first and second images, and a data driver which transmits data voltages to the pixels; a backlight unit which provides light to the display panel assembly; and a shutter member including first and second shutters, where the backlight unit emits the light during light emitting periods, the light emitting periods includes first light emitting periods, during which the first image is displayed, and second light emitting periods, during which the second image is displayed, the first light emitting periods and the second light emitting periods alternate, and the first shutter is opened during at least two open periods, which are between neighboring second light emitting periods of the second light emitting periods and temporally spaced apart from each other.
    Type: Application
    Filed: March 21, 2012
    Publication date: May 2, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seong Il KIM, Bae Won LEE, San Seong SEOMUN, Ja Hun KOO, Woon-Rok JANG, Su-Han WOO
  • Patent number: 8395737
    Abstract: An array substrate includes a lower substrate, a switching element and a pixel electrode. In the lower substrate, unit pixel areas are each divided into a plurality of domains. The switching element is disposed on the lower substrate and transmits a pixel signal. The pixel electrode is disposed on the unit pixel area and is electrically connected to the switching element. The pixel electrode includes a plurality of slit portions disposed thereon. A portion of the slit portions is longitudinally extended in a zigzag shape along different directions in correspondence with the domains.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: March 12, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Su-Jeong Kim, Jang-Kun Song, Sung-Hwan Hong, Kee-Bum Park, Seon-Ah Cho, Hye-Ran You, Su-Han Woo, Jae-Jin Lyu, Eun Cho