Patents by Inventor Seok-Joon Hong

Seok-Joon Hong 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: 10012859
    Abstract: A display device including: a substrate including first, second, and third pixel areas; a plurality of pixel electrodes positioned on the substrate within each of the first, second, and third pixel areas; and a plurality of roof layers each facing a respective one of the pixel electrodes, ones of the roof layers positioned to be spaced apart from respective ones of the pixel electrodes with a plurality of microcavities therebetween, the microcavities positioned to correspond to each of the first, second, and third pixel areas. The roof layer includes first and second color filter layers positioned corresponding to the first pixel area and the second pixel area and a third color filter layer positioned below the liquid crystal layer, and a cell gap of the microcavity corresponding to the third pixel area is smaller than cell gaps of the microcavities corresponding to the first and second pixel areas.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: July 3, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Il Park, Won Tae Kim, Ji Yeon Choi, Seok-Joon Hong
  • Patent number: 9798209
    Abstract: A display device according to an exemplary embodiment includes: a substrate, a thin film transistor on the substrate, a pixel electrode connected to the thin film transistor, a common electrode on the pixel electrode to be spaced apart from the pixel electrode while a plurality of microcavities are interposed between the common electrode and the pixel electrode, a roof layer on the common electrode, an alignment layer on the pixel electrode and beneath the common electrode and including a photosensitive material, a liquid crystal layer filling the microcavities, and an encapsulation layer on the roof layer to seal the microcavities.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: October 24, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seon Uk Lee, Nam Seok Roh, Hee-Keun Lee, Seok-Joon Hong
  • Patent number: 9709857
    Abstract: A display device may include a substrate having a first substrate portion, a second substrate portion, and a third substrate portion positioned between the first substrate portion and the second substrate portion. The display device may further include a first roof layer and a second roof layer formed of the same material, spaced from each other, and respectively overlapping the first substrate portion and the second substrate portion. The display device may further include a transistor overlapping the third substrate portion. The display device may further include a liquid crystal set. The display device may further include a common electrode portion positioned between the first substrate portion and the liquid crystal set. The display device may further include a sub-pixel electrode positioned between the liquid crystal set and the first roof layer and electrically connected to the transistor.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: July 18, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seok-Joon Hong, Seong Gyu Kwon, Ji Seong Yang
  • Publication number: 20170184889
    Abstract: Provided is a display device, including a substrate including pixel areas which are disposed in a matrix form including pixel rows and pixel columns, a thin film transistor formed on the substrate, a pixel electrode connected to the thin film transistor, a common electrode formed on the pixel electrode to be spaced apart from the pixel electrode with a microcavity therebetween, a liquid crystal layer filling the microcavity between the pixel electrode and the common electrode, a roof layer formed on the common electrode, a liquid crystal injection hole formed in the common electrode and the roof layer to expose a part of the microcavity, and an overcoat formed on the roof layer so as to cover the liquid crystal injection hole to seal the microcavity. A cross section of the microcavity has a reverse-tapered trapezoidal shape in which an upper width is larger than a lower width.
    Type: Application
    Filed: March 10, 2017
    Publication date: June 29, 2017
    Inventors: Jung Suk BANG, Dae Ho SONG, Seok-Joon HONG
  • Patent number: 9612469
    Abstract: Provided is a display device, including a substrate including pixel areas which are disposed in a matrix form including pixel rows and pixel columns, a thin film transistor formed on the substrate, a pixel electrode connected to the thin film transistor, a common electrode formed on the pixel electrode to be spaced apart from the pixel electrode with a microcavity therebetween, a liquid crystal layer filling the microcavity between the pixel electrode and the common electrode, a roof layer formed on the common electrode, a liquid crystal injection hole formed in the common electrode and the roof layer to expose a part of the microcavity, and an overcoat formed on the roof layer so as to cover the liquid crystal injection hole to seal the microcavity. A cross section of the microcavity has a reverse-tapered trapezoidal shape in which an upper width is larger than a lower width.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: April 4, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung Suk Bang, Dae Ho Song, Seok-Joon Hong
  • Publication number: 20170082891
    Abstract: A liquid crystal display includes: a substrate; a thin film transistor; a pixel electrode; a roof layer; a liquid crystal layer; and a plurality of partitions. The thin film transistor is disposed on the substrate. The pixel electrode is connected to the thin film transistor. The roof layer is disposed to face the pixel electrode. The liquid crystal layer is formed by a plurality of microcavities between the pixel electrode and the roof layer, wherein the microcavities include a liquid crystal material. The partitions are between the microcavities adjacent to each other, wherein the partitions may include an organic material and are arranged side by side to one another.
    Type: Application
    Filed: November 29, 2016
    Publication date: March 23, 2017
    Inventors: Seok-Joon HONG, Ji Seong YANG, Tae Woo LIM, Seon Uk LEE, Kyung Tae CHAE
  • Patent number: 9568779
    Abstract: The disclosure relates to a display device, and more particularly to a display device having an improved aperture ratio and robustness. The display device may provide a display device including: a substrate; a thin film transistor formed on the substrate; a pixel electrode connected to the thin film transistor; microcavities formed on the pixel electrode, the microcavities holding liquid crystals; a roof layer formed on the microcavities and covering some sides of the microcavities; and an encapsulation layer formed on the roof layer to seal the microcavities, wherein sides of neighboring microcavities define openings are disposed in a matrix configuration.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: February 14, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seong Gyu Kwon, Seok-Joon Hong, Dae Ho Song, Seon Uk Lee, Woo Jae Lee
  • Patent number: 9541786
    Abstract: A liquid crystal display includes: a substrate; a thin film transistor; a pixel electrode; a roof layer; a liquid crystal layer; and a plurality of partitions. The thin film transistor is disposed on the substrate. The pixel electrode is connected to the thin film transistor. The roof layer is disposed to face the pixel electrode. The liquid crystal layer is formed by a plurality of microcavities between the pixel electrode and the roof layer, wherein the microcavities include a liquid crystal material. The partitions are between the microcavities adjacent to each other, wherein the partitions may include an organic material and are arranged side by side to one another.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: January 10, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seok-Joon Hong, Ji Seong Yang, Tae Woo Lim, Seon Uk Lee, Kyung Tae Chae
  • Publication number: 20160313600
    Abstract: A display device including: a substrate including first, second, and third pixel areas; a plurality of pixel electrodes positioned on the substrate within each of the first, second, and third pixel areas; and a plurality of roof layers each facing a respective one of the pixel electrodes, ones of the roof layers positioned to be spaced apart from respective ones of the pixel electrodes with a plurality of microcavities therebetween, the microcavities positioned to correspond to each of the first, second, and third pixel areas. The roof layer includes first and second color filter layers positioned corresponding to the first pixel area and the second pixel area and a third color filter layer positioned below the liquid crystal layer, and a cell gap of the microcavity corresponding to the third pixel area is smaller than cell gaps of the microcavities corresponding to the first and second pixel areas.
    Type: Application
    Filed: March 15, 2016
    Publication date: October 27, 2016
    Inventors: Sang Il PARK, Won Tae KIM, Ji Yeon CHOI, Seok-Joon HONG
  • Publication number: 20160306207
    Abstract: A display device according to an exemplary embodiment includes: a substrate, a thin film transistor on the substrate, a pixel electrode connected to the thin film transistor, a common electrode on the pixel electrode to be spaced apart from the pixel electrode while a plurality of microcavities are interposed between the common electrode and the pixel electrode, a roof layer on the common electrode, an alignment layer on the pixel electrode and beneath the common electrode and including a photosensitive material, a liquid crystal layer filling the microcavities, and an encapsulation layer on the roof layer to seal the microcavities.
    Type: Application
    Filed: June 29, 2016
    Publication date: October 20, 2016
    Inventors: Seon Uk LEE, Nam Seok ROH, Hee-Keun LEE, Seok-Joon HONG
  • Publication number: 20160291380
    Abstract: A liquid crystal display (LCD) includes: a substrate including a display area and a peripheral area; a thin film transistor disposed on the display area of the substrate; a pixel electrode connected to the thin film transistor; a liquid crystal layer disposed inside a microcavity on the pixel electrode; a roof layer disposed on the microcavity; a gate driver integrated on the peripheral area of the substrate and including a plurality of signal lines and a plurality of stages connected to the plurality of signal lines via contact holes; and a blocking layer comprising a base layer disposed on the contact hole and a first inorganic layer disposed on the base layer.
    Type: Application
    Filed: September 29, 2015
    Publication date: October 6, 2016
    Inventors: Seok-Joon HONG, Dae Ho SONG, Sang Il PARK, Ji Yeon CHOI
  • Publication number: 20160282690
    Abstract: A display device may include the following elements: a switching element comprising a source electrode, a drain electrode, and a gate electrode; a data line electrically connected to the source electrode; a first pixel electrode electrically connected to the drain electrode; a second pixel electrode immediately neighboring the first pixel electrode; a first common electrode and a second common electrode respectively overlapping the first pixel electrode and the second pixel electrode; a first auxiliary common electrode line and a second auxiliary common electrode line each extending parallel to the data line; and a first common electrode line and a second common electrode line respectively electrically connected through the first auxiliary common electrode line and the second auxiliary common electrode line to the first common electrode and the second common electrode.
    Type: Application
    Filed: September 28, 2015
    Publication date: September 29, 2016
    Inventors: Seok-Joon HONG, Sung Hwan WON, Byung-Gon KUM, Sang Il PARK, Don Chan CHO
  • Patent number: 9442328
    Abstract: A display device may include a substrate, a first roof layer formed of a material, a second roof layer formed of the material and spaced from the substrate, and a subpixel electrode disposed between the substrate and the first roof layer. The display device may further include a common electrode member disposed between the subpixel electrode and the first roof layer. The common electrode member may overlap the first roof layer in a first direction without extending beyond the first roof layer in a second direction. The first direction may be perpendicular to a surface of the substrate. The second direction may be parallel to the surface of the substrate. The display device may further include a liquid crystal set disposed between the subpixel electrode and the common electrode member.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: September 13, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Won Tae Kim, You Young Jin, Kyung Tae Chae, Don Chan Cho, Seok-Joon Hong
  • Patent number: 9389478
    Abstract: A display device according to an exemplary embodiment includes: a substrate, a thin film transistor on the substrate, a pixel electrode connected to the thin film transistor, a common electrode on the pixel electrode to be spaced apart from the pixel electrode while a plurality of microcavities are interposed between the common electrode and the pixel electrode, a roof layer on the common electrode, an alignment layer on the pixel electrode and beneath the common electrode and including a photosensitive material, a liquid crystal layer filling the microcavities, and an encapsulation layer on the roof layer to seal the microcavities.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: July 12, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seon Uk Lee, Nam Seok Roh, Hee-Keun Lee, Seok-Joon Hong
  • Publication number: 20160116794
    Abstract: An exemplary embodiment provides a liquid crystal display including: a substrate configured to include a display area and a peripheral area; a thin film transistor disposed on the substrate; a pixel electrode connected to the thin film transistor; a roof layer disposed to face the pixel electrode; a capping layer disposed on the roof layer; and a blocking film disposed in the peripheral area to surround a lateral surface of the capping layer, wherein a plurality of microcavities are formed between the pixel electrode and the roof layer in the display area, and the microcavities form a liquid crystal layer including a liquid crystal material, wherein a level of a top surface of the blocking film is higher than that of a top surface of the liquid crystal layer.
    Type: Application
    Filed: May 28, 2015
    Publication date: April 28, 2016
    Inventors: Dae Ho SONG, Seong Gyu KWON, Yong Seok KIM, Jae Cheol PARK, Seok-Joon HONG
  • Patent number: 9244301
    Abstract: A display device includes a substrate, a thin film transistor disposed on the substrate, a pixel electrode connected to the thin film transistor, a common electrode disposed on the pixel electrode and spaced apart from the pixel electrode, where a microcavity is defined between the pixel electrode and the common electrode, and a common electrode cutout is defined in the common electrode; a roof layer disposed on the common electrode, a liquid crystal injection hole formed through the common electrode and the roof layer, where the liquid crystal injection hole exposes a portion of the microcavity, a liquid crystal layer disposed in the microcavity, and an encapsulation layer disposed on the roof layer, where the encapsulation layer covers the liquid crystal injection hole and seals the microcavity.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: January 26, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seok-Joon Hong, Kyung Tae Chae, Yong Seok Kim
  • Publication number: 20150309374
    Abstract: A display device may include a substrate having a first substrate portion, a second substrate portion, and a third substrate portion positioned between the first substrate portion and the second substrate portion. The display device may further include a first roof layer and a second roof layer formed of the same material, spaced from each other, and respectively overlapping the first substrate portion and the second substrate portion. The display device may further include a transistor overlapping the third substrate portion. The display device may further include a liquid crystal set. The display device may further include a common electrode portion positioned between the first substrate portion and the liquid crystal set. The display device may further include a sub-pixel electrode positioned between the liquid crystal set and the first roof layer and electrically connected to the transistor.
    Type: Application
    Filed: September 9, 2014
    Publication date: October 29, 2015
    Inventors: Seok-Joon HONG, Seong Gyu KWON, Ji Seong YANG
  • Publication number: 20150301375
    Abstract: A display device according to an exemplary embodiment includes: a substrate, a thin film transistor on the substrate, a pixel electrode connected to the thin film transistor, a common electrode on the pixel electrode to be spaced apart from the pixel electrode while a plurality of microcavities are interposed between the common electrode and the pixel electrode, a roof layer on the common electrode, an alignment layer on the pixel electrode and beneath the common electrode and including a photosensitive material, a liquid crystal layer filling the microcavities, and an encapsulation layer on the roof layer to seal the microcavities.
    Type: Application
    Filed: September 18, 2014
    Publication date: October 22, 2015
    Inventors: Seon Uk LEE, Nam Seok ROH, Hee-Keun LEE, Seok-Joon HONG
  • Patent number: 9151976
    Abstract: A display device includes a substrate, a thin film transistor disposed on the substrate, a pixel electrode connected to the thin film transistor, a common electrode disposed opposite to the pixel electrode and spaced apart from the pixel electrode, where a microcavity is defined between the common electrode and the pixel electrode, and a cutout is defined in the common electrode, an insulating layer disposed on the common electrode, a roof layer disposed on the insulating layer, where a liquid crystal injection hole is defined through the common electrode and the roof layer such that the common electrode and the roof layer expose a portion of the microcavity, a liquid crystal layer disposed in the microcavity, and an encapsulation layer disposed on the roof layer, where the encapsulation layer covers the liquid crystal injection hole, and seals the microcavity.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: October 6, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ji Seong Yang, Won Tae Kim, Kyung Tae Chae, Seok-Joon Hong
  • Publication number: 20150268491
    Abstract: The disclosure relates to a display device, and more particularly to a display device having an improved aperture ratio and robustness. The display device may provide a display device including: a substrate; a thin film transistor formed on the substrate; a pixel electrode connected to the thin film transistor; microcavities formed on the pixel electrode, the microcavities holding liquid crystals; a roof layer formed on the microcavities and covering some sides of the microcavities; and an encapsulation layer formed on the roof layer to seal the microcavities, wherein sides of neighboring microcavities define openings are disposed in a matrix configuration.
    Type: Application
    Filed: September 24, 2014
    Publication date: September 24, 2015
    Inventors: Seong Gyu KWON, Seok-Joon HONG, Dae Ho SONG, Seon Uk LEE, Woo Jae LEE