Patents by Inventor Sang-Uk Lim

Sang-Uk Lim 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: 10228587
    Abstract: Provided are a liquid crystal display panel and a manufacturing method thereof, and more particularly, a liquid crystal display panel including white pixels and a manufacturing method thereof. The liquid crystal display panel includes: a first substrate and a second substrate facing each other; a liquid crystal layer positioned between the first substrate and the second substrate; a plurality of color filters positioned on the first substrate and representing different colors from each other, in which at least two of the plurality of color filters overlap with each other on the first substrate to form an overlapping portion, and the overlapping portion forms a first spacer; a transparent filter positioned on the first substrate and positioned in a transmitting area of a white pixel; and a second spacer including the same material as the transparent filter.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: March 12, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byoung Sun Na, Hee June Kwak, Seok Kyu Yoon, Sang-Uk Lim, Seung Soo Baek, Seong Young Lee, Wan-Soon Im
  • Patent number: 10217414
    Abstract: An emission control driver includes a plurality of stages configured to output a plurality of emission control signals, respectively. Each stage includes an input circuit for receiving a previous emission control signal from one of previous stages or a vertical start signal, and configured to control a voltage of a first node and a voltage of a second node in response to a first clock signal; a stabilizing circuit for stabilizing the voltage of the first node in response to the voltage of the second node and a second clock signal; a voltage adjusting circuit connected between the second node and a third node, configured for boosting the voltage of the second node, and controlling the boosted voltage of the second node; and an output circuit configured to control an emission control signal in response to the voltage of the first node and a voltage of the third node.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: February 26, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-Hyun Park, Sung-Hwan Kim, Kyoung-Ju Shin, Sang-Uk Lim, Yang-Hwa Choi
  • Patent number: 10210812
    Abstract: There is provided a display panel including a plurality of white subpixels configured to display a white image, a gate line connected with the white subpixels and extended in a row direction, and an in-pixel gate driver including in-pixel elements exclusively in the white subpixels and connected with the gate line to supply a gate signal to the gate line.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: February 19, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se-hyang Kim, Heejune Kwak, Kwang-chul Jung, Sang-uk Lim, Junki Jeong
  • Patent number: 10203572
    Abstract: A liquid crystal display includes a first substrate including first to fourth color pixel areas, first to fourth thin film transistors disposed on the first substrate, and first to fourth pixel electrodes connected to the first to fourth thin film transistors. Each of the first to fourth pixel electrodes includes a cross stem portion including a horizontal stem portion and a vertical stem portion crossing the horizontal stem portion, and minute branch portions extending from the cross stem portion at a predetermined angle with respect to a horizontal direction. A third angle of the minute branch portions of the third pixel electrode is greater than each of first and second angles of the minute branch portions of the respective first and second pixel electrodes. Each of the first and second angles is greater than a fourth angle of the minute branch portions of the fourth pixel electrode.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: February 12, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Wan-Soon Im, Sun Hwa Lee, Yun Seok Lee, Sang-Uk Lim
  • Publication number: 20190012971
    Abstract: A display apparatus with improved aperture ratio and light transmittance is presented. The apparatus has a pixel group that includes a first pixel including first and second sub-regions, a second pixel including third and fourth sub-regions, and a third pixel including fifth and sixth sub-regions. The first, second, and third pixels are sequentially arranged in a first direction and at least two sub-regions of the first, third, and fifth sub-regions have different widths in the first direction. The second, fourth, and sixth sub-regions are sequentially arranged in the first direction, and at least one sub-region of the second, fourth, and sixth sub-regions expands toward an adjacent sub-region in the first direction and has a width greater than a width of the other sub-regions of the second, fourth, and sixth sub-regions in the same pixel group.
    Type: Application
    Filed: September 14, 2018
    Publication date: January 10, 2019
    Inventors: Sunhwa LEE, Kwang-chul JUNG, Sang-Uk LIM
  • Patent number: 10102788
    Abstract: Embodiments of the present invention relate to a display device and a driving method thereof. More particularly, embodiments of the present invention relate to a display device including a white pixel, and a method of driving such a display device. A display device according to an exemplary embodiment of the present invention includes a plurality of colored pixels and a white pixel, wherein the colored pixels and the white pixel each include at least one switching element, the colored pixels and the white pixel are disposed to be adjacent to each other so as to collectively have a center, and the switching elements are each positioned proximate to the center.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: October 16, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seok Kyu Yoon, Sang Uk Lim
  • Patent number: 10096289
    Abstract: A display apparatus with improved aperture ratio and light transmittance is presented. The apparatus has a pixel group that includes a first pixel including first and second sub-regions, a second pixel including third and fourth sub-regions, and a third pixel including fifth and sixth sub-regions. The first, second, and third pixels are sequentially arranged in a first direction and at least two sub-regions of the first, third, and fifth sub-regions have different widths in the first direction. The second, fourth, and sixth sub-regions are sequentially arranged in the first direction, and at least one sub-region of the second, fourth, and sixth sub-regions expands toward an adjacent sub-region in the first direction and has a width greater than a width of the other sub-regions of the second, fourth, and sixth sub-regions in the same pixel group.
    Type: Grant
    Filed: June 9, 2015
    Date of Patent: October 9, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sunhwa Lee, Kwang-chul Jung, Sang-Uk Lim
  • Publication number: 20180286307
    Abstract: An organic light emitting display device includes a plurality of pixels. Each of the pixels includes an organic light emitting diode, first to third transistors, a storage capacitor, and a first capacitor. The second transistor includes a gate electrode receiving a first scan signal, a first electrode receiving a data signal, and a second electrode connected to a first electrode of the first transistor. The third transistor includes a gate electrode receiving a second scan signal, a first electrode connected to a second electrode of the first transistor, and a second electrode connected to a gate electrode of the first transistor. The storage capacitor includes a first electrode receiving a power voltage and a second electrode connected to the gate electrode of the first transistor. The first capacitor includes a first electrode connected to the gate electrode of the third transistor and a second electrode receiving the power voltage.
    Type: Application
    Filed: September 14, 2017
    Publication date: October 4, 2018
    Inventors: DONGWOO KIM, SUNGHWAN KIM, KYONGJU SHIN, CHEOL-GON LEE, SANG-UK LIM
  • Patent number: 10067374
    Abstract: A liquid crystal display device that allows efficient luminance control is presented. The device includes: first, second, and third color pixel areas; a first substrate and a second substrate; a first color filter disposed in the first color pixel area on the first substrate or the second substrate; a second color filter disposed in the second color pixel area on the first substrate or the second substrate; a third color filter disposed in the third color pixel area on the first substrate or the second substrate; and a liquid crystal layer disposed between the first substrate and the second substrate, wherein the first color pixel area includes a first transparent region at which the first color filter is not disposed, and a ratio of the first transparent region of the first color pixel area to the first color pixel area is in a range of 1/1000 to 1/2, inclusive.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: September 4, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seok Kyu Yoon, Hee June Kwak, Eun Ju Kim, Sun Hwa Lee, Yun Seok Lee, Jun Pyo Lee, Sang-Uk Lim
  • Publication number: 20180197474
    Abstract: An organic light-emitting display apparatus includes an organic light-emitting diode, a switching transistor, a first light emission control transistor, and a driving transistor. The organic light-emitting diode includes an anode and a cathode for receiving a reference voltage. The switching transistor includes a gate electrode for receiving an nth scan signal and a source electrode for receiving a data signal, and is an NMOS transistor. The first light emission control transistor includes a gate electrode for receiving a light emission control signal, and is configured to turn on upon receiving the light emission control signal to determine a timing of flow of a driving current to the organic light-emitting diode, and is a PMOS transistor. The driving transistor is connected to the switching transistor and the first light emission control transistor and provides the driving current to the organic light-emitting diode.
    Type: Application
    Filed: November 17, 2017
    Publication date: July 12, 2018
    Inventors: Sangjin JEON, Dongwoo KIM, Sang-uk LIM
  • Publication number: 20180196306
    Abstract: A liquid crystal display device that allows efficient luminance control is presented. The device includes: first, second, and third color pixel areas; a first substrate and a second substrate; a first color filter disposed in the first color pixel area on the first substrate or the second substrate; a second color filter disposed in the second color pixel area on the first substrate or the second substrate; a third color filter disposed in the third color pixel area on the first substrate or the second substrate; and a liquid crystal layer disposed between the first substrate and the second substrate, wherein the first color pixel area includes a first transparent region at which the first color filter is not disposed, and a ratio of the first transparent region of the first color pixel area to the first color pixel area is in a range of 1/1000 to 1/2, inclusive.
    Type: Application
    Filed: March 8, 2018
    Publication date: July 12, 2018
    Inventors: Seok Kyu YOON, Hee June KWAK, Eun Ju KIM, Sun Hwa LEE, Yun Seok LEE, Jun Pyo LEE, Sang-Uk LIM
  • Publication number: 20180190204
    Abstract: A scan driver, includes a plurality of stage circuits, each of which includes a driving circuit unit providing an output signal and an inverter inverting the output signal of the driving circuit unit and generating a scan signal, in which the inverter includes a first transistor and a second transistor, which are complementarily operated, the first transistor is a P-type polysilicon transistor, and the second transistor is an N-type oxide semiconductor transistor. A display device may include the scan driver.
    Type: Application
    Filed: December 17, 2017
    Publication date: July 5, 2018
    Inventors: Kyoung Ju SHIN, Cheol Gon Lee, Sang Uk Lim, Chang Yong Jeong
  • Patent number: 9989818
    Abstract: Provided are display device. According to an aspect of the present invention, there is provided a display device comprising a first substrate, a gate wiring which is formed on the first substrate and extends in a first direction, a data wiring which is insulated from the gate wiring, intersects the gate wiring, and extends in a second direction, and a pixel electrode which comprises a first subpixel electrode to which a first data voltage is applied from the data wiring and a second subpixel electrode to which a second data voltage lower than the first data voltage is applied from the data wiring, wherein the first subpixel electrode is surrounded by the second subpixel electrode, and the second subpixel electrode does not overlap the data wiring.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: June 5, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Jin Jeon, Sang Uk Lim, Mee Hye Jung
  • Publication number: 20180144684
    Abstract: An OLED display device includes a pixel having a switching transistor turned on by a scan signal received from a scan line and which transmits a data signal received from a data line to a first node, a driving transistor connected between the first node and a second node and through which a driving current corresponding to the data signal flows, a storage capacitor including one end connected to a power supply and another end connected to a gate electrode of the driving transistor, an OLED emitting light by the driving current, and a light emission control transistor connected between the second node and an anode of the OLED and which is turned on by an light emission control signal and transmits the driving current to the OLED. The switching transistor may be an n-type transistor, and the light emission control transistor is a p-type transistor.
    Type: Application
    Filed: November 7, 2017
    Publication date: May 24, 2018
    Inventors: Sang Jin JEON, Sang-Uk LIM
  • Patent number: 9947274
    Abstract: A gate driver includes a plurality of stages outputting a plurality of gate output signals, respectively. Each stage includes a first input circuit applying an input signal to a first node in response to a first clock signal, a second input circuit applying the first clock signal to a second node in response to a voltage of the first node, a first output circuit controlling a gate output signal to a first logic level in response to the voltage of the first node, a second output circuit controlling the gate output signal to a second logic level in response to a voltage of the second node, and a leakage current blocking circuit applying a first power voltage corresponding to the first logic level to the first input circuit in response to the voltage of the first node.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: April 17, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-Hyun Park, Sung-Hwan Kim, Kyoung-Ju Shin, Sang-Uk Lim, Yang-Hwa Choi
  • Patent number: 9939674
    Abstract: A liquid crystal display device that allows efficient luminance control is presented. The device includes: first, second, and third color pixel areas; a first substrate and a second substrate; a first color filter disposed in the first color pixel area on the first substrate or the second substrate; a second color filter disposed in the second color pixel area on the first substrate or the second substrate; a third color filter disposed in the third color pixel area on the first substrate or the second substrate; and a liquid crystal layer disposed between the first substrate and the second substrate, wherein the first color pixel area includes a first transparent region at which the first color filter is not disposed, and a ratio of the first transparent region of the first color pixel area to the first color pixel area is in a range of 1/1000 to ½, inclusive.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: April 10, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seok Kyu Yoon, Hee June Kwak, Eun Ju Kim, Sun Hwa Lee, Yun Seok Lee, Jun Pyo Lee, Sang-Uk Lim
  • Patent number: 9928791
    Abstract: According to an embodiment, a display apparatus includes gate lines extending in a first direction, data lines extending in a second direction crossing the first direction, and pixels connected to the gate lines and the data lines. The pixels include pixels arranged in a k-th row and pixels arranged in a (k+1)th row disposed adjacent to the pixels arranged in the k-th row in the second direction. An (i+1)th gate line is disposed between the pixels in the k-th row and the pixels in the (k+1)th row. A first pixel arranged in a g-th column among the pixels arranged in the k-th row and a second pixel arranged in the g-th column among the pixels arranged in the (k+1)th row are connected to a j-th data line. The pixels arranged in the k-th row are alternately connected to an i-th gate line and the (i+1)th gate line.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: March 27, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kuk-Hwan Ahn, Seokyun Son, Jai-Hyun Koh, Geunjeong Park, Dong-Won Park, Donghwa Shin, Won Sik Oh, Ik Soo Lee, Sang-Uk Lim, Seokha Hong
  • Patent number: 9927669
    Abstract: A liquid crystal display includes: a first substrate; a reference voltage line including a storage electrode; a pixel electrode including a first subpixel electrode and a second subpixel electrode, and disposed in a pixel area; a second substrate facing the first substrate; and a liquid crystal layer provided between the first substrate and the second substrate, wherein the first subpixel electrode includes a first horizontal stem and a first vertical stem, the second subpixel electrode includes a second horizontal stem and a second vertical stem, the second subpixel electrode is provided to an external side of the pixel area to surround the first subpixel electrode, and the storage electrode includes a first storage electrode overlapping the first horizontal stem of the first subpixel electrode, and a second storage electrode overlapping the second vertical stem of the second subpixel electrodes.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: March 27, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang Uk Lim, Il Gon Kim, Sang Jin Jeon, Mee Hye Jung, Sung Hwan Kim, Eun Ju Kim
  • Publication number: 20180081237
    Abstract: Provided are a liquid crystal display panel and a manufacturing method thereof, and more particularly, a liquid crystal display panel including white pixels and a manufacturing method thereof. The liquid crystal display panel includes: a first substrate and a second substrate facing each other; a liquid crystal layer positioned between the first substrate and the second substrate; a plurality of color filters positioned on the first substrate and representing different colors from each other, in which at least two of the plurality of color filters overlap with each other on the first substrate to form an overlapping portion, and the overlapping portion forms a first spacer; a transparent filter positioned on the first substrate and positioned in a transmitting area of a white pixel; and a second spacer including the same material as the transparent filter.
    Type: Application
    Filed: November 27, 2017
    Publication date: March 22, 2018
    Inventors: Byoung Sun NA, Hee June KWAK, Seok Kyu YOON, Sang-Uk LIM, Seung Soo BAEK, Seong Young LEE, Wan-Soon IM
  • Patent number: 9851600
    Abstract: Provided are a liquid crystal display panel and a manufacturing method thereof, and more particularly, a liquid crystal display panel including white pixels and a manufacturing method thereof. The liquid crystal display panel includes: a first substrate and a second substrate facing each other; a liquid crystal layer positioned between the first substrate and the second substrate; a plurality of color filters positioned on the first substrate and representing different colors from each other, in which at least two of the plurality of color filters overlap with each other on the first substrate to form an overlapping portion, and the overlapping portion forms a first spacer; a transparent filter positioned on the first substrate and positioned in a transmitting area of a white pixel; and a second spacer including the same material as the transparent filter.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: December 26, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byoung Sun Na, Hee June Kwak, Seok Kyu Yoon, Sang-Uk Lim, Seung Soo Baek, Seong Young Lee, Wan-Soon Im