Patents by Inventor Seon Uk LEE

Seon Uk LEE 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: 20160211282
    Abstract: A device for monitoring a liquid crystal display includes: a substrate including a display region and a non-display region disposed at an edge of the display region. The display region includes: a thin film transistor disposed on the substrate, a pixel electrode disposed on the substrate and connected to the thin film transistor, a first sacrificial layer disposed on the pixel electrode, and a roof layer disposed on the sacrificial layer. The non-display region includes: a second sacrificial layer disposed on the substrate, and the roof layer disposed on the second sacrificial layer. The first sacrificial layer has a first longitudinal dimension and a first cross-sectional area, and the second sacrificial layer has a second longitudinal dimension and a second cross-sectional area. The first cross-sectional area is the same as the second cross-sectional area. The second longitudinal dimension is greater than the first longitudinal dimension.
    Type: Application
    Filed: March 29, 2016
    Publication date: July 21, 2016
    Inventors: Seon Uk LEE, Won Tae KIM, Min Ho MOON, Hong Sick PARK, Sung Hwan WON, You Young JIN
  • Patent number: 9389469
    Abstract: A display device includes: a common voltage line formed on a display unit and at an outer side of the display unit; a first insulating layer formed on a thin film transistor on the display unit; a pixel electrode formed on the first insulating layer; a liquid crystal layer including a plurality of microcavities formed on the pixel electrode; a common electrode spaced apart from the pixel electrode with the liquid crystal layer interposed therebetween; the common electrode contacting the common voltage line at the outer side of the display unit through a contact hole; a second insulating layer formed on the common electrode; a roof layer formed on the second insulating layer; an injection hole formed on the common electrode, second insulating layer, and roof layer; and an overcoat formed on the roof layer covering the injection hole and sealing the microcavity, wherein the roof layer covers the contact hole.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: July 12, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Won Tae Kim, Yu Jin Kim, Seon Uk Lee, Kyung Tae Chae
  • 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
  • Patent number: 9354477
    Abstract: A liquid crystal display includes a substrate, a thin film transistor, a first protection layer, a pixel electrode, a light blocking layer, a second protection layer, and a roof layer. The thin film transistor is disposed on the substrate. The first protection layer is disposed on the thin film transistor. The pixel electrode is disposed on the first protection layer. The light blocking layer is disposed on the pixel electrode to cover the thin film transistor. The second protection layer is disposed on the light blocking layer. The roof layer is disposed to face the pixel electrode, wherein a plurality of microcavities having injection holes are formed between the pixel electrode and the roof layer. The microcavities comprise liquid crystal molecules, and the first protection layer and the second protection layer have different etch rates.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: May 31, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji Seong Yang, Dae Ho Lee, Yong Seok Kim, Han Joon Yoo, Seon Uk Lee
  • Publication number: 20160124261
    Abstract: A manufacturing method of a liquid crystal display includes: providing a pixel electrode on an insulation substrate; providing a sacrificial layer on the pixel electrode; providing a common electrode on the sacrificial layer; providing a photoresist layer on the common electrode; exposing a portion of the photoresist layer, common electrode and the sacrificial layer with light; developing the portion of the photoresist layer exposed with the light; etching a layer between the photoresist layer and the sacrificial layer using the developed photoresist layer as a mask to expose the portion of the sacrificial layer exposed with the light; removing the portion of the sacrificial layer exposed with the light; providing a roof layer on the insulation substrate and etching the roof layer to form a liquid crystal injection hole therein; and removing the sacrificial layer exposed through the liquid crystal injection hole to form a microcavity.
    Type: Application
    Filed: January 8, 2016
    Publication date: May 5, 2016
    Inventors: Tae Woo LIM, Kyung Tae CHAE, Sung Hwan WON, Seon Uk LEE, Jun Heui LEE
  • Patent number: 9331109
    Abstract: A device for monitoring a liquid crystal display includes: a substrate including a display region and a non-display region disposed at an edge of the display region. The display region includes: a thin film transistor disposed on the substrate, a pixel electrode disposed on the substrate and connected to the thin film transistor, a first sacrificial layer disposed on the pixel electrode, and a roof layer disposed on the sacrificial layer. The non-display region includes: a second sacrificial layer disposed on the substrate, and the roof layer disposed on the second sacrificial layer. The first sacrificial layer has a first longitudinal dimension and a first cross-sectional area, and the second sacrificial layer has a second longitudinal dimension and a second cross-sectional area. The first cross-sectional area is the same as the second cross-sectional area. The second longitudinal dimension is greater than the first longitudinal dimension.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: May 3, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seon Uk Lee, Won Tae Kim, Min Ho Moon, Hong Sick Park, Sung Hwan Won, You Young Jin
  • Publication number: 20160116792
    Abstract: A liquid crystal display includes: an insulation substrate; a microcavity layer disposed on the insulation substrate and having a reversed taper side wall; a pixel electrode disposed in the microcavity layer on the insulation substrate; a liquid crystal layer disposed in the microcavity layer; and a common electrode which covers the liquid crystal layer.
    Type: Application
    Filed: November 10, 2015
    Publication date: April 28, 2016
    Inventors: Kyung Tae CHAE, Sung Hwan WON, Yeun Tae KIM, Won Tae KIM, Seon Uk LEE
  • Patent number: 9323110
    Abstract: A display device configured to control an aggregation position of an alignment layer and a manufacturing method thereof are disclosed. The device includes a substrate including pixel areas; a thin film transistor formed on the substrate; a pixel electrode connected to the thin film transistor and formed on the pixel area; a roof layer formed above the pixel electrode and separated from the pixel electrode by a micro-cavity; a first injection hole formed in the roof layer and extending to a first edge and/or a second edge of the micro-cavity; a second injection hole formed in the roof layer and extending to a left edge and a right edge of the micro-cavity; a liquid crystal layer in the micro-cavity; and an encapsulation layer formed on the roof layer to cover the first injection hole and the second injection hole.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: April 26, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seon Uk Lee, Tae Woo Lim, Sun Hwa Lee
  • Patent number: 9323090
    Abstract: A display device may include a substrate and a first roof layer portion that is formed of a roof layer material and overlaps the substrate in a direction, the direction is perpendicular to a surface of the substrate. A lateral surface of the first roof layer portion is disposed in a plane. The display device may further a second roof layer portion formed of the roof layer material and separated from the first roof layer portion. The display device may further a common electrode portion disposed between the first roof layer portion and the substrate in the direction. A lateral surface of the common electrode portion is disposed in the plane or is spaced from the lateral surface of the first roof layer portion in a second direction parallel to the surface of the substrate. The display device may further a pixel electrode disposed between the first common electrode portion and the substrate.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: April 26, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dae Ho Lee, Won Tae Kim, Sung Hwan Won, You Young Jin, Kyung Tae Chae, Pil Sook Kwon, Yong Seok Kim, Han Joon Yoo, Seon Uk Lee, Woo Jae Lee, Tae Woo Lim
  • Patent number: 9268164
    Abstract: A manufacturing method of a liquid crystal display includes: providing a pixel electrode on an insulation substrate; providing a sacrificial layer on the pixel electrode; providing a common electrode on the sacrificial layer; providing a photoresist layer on the common electrode; exposing a portion of the photoresist layer, common electrode and the sacrificial layer with light; developing the portion of the photoresist layer exposed with the light; etching a layer between the photoresist layer and the sacrificial layer using the developed photoresist layer as a mask to expose the portion of the sacrificial layer exposed with the light; removing the portion of the sacrificial layer exposed with the light; providing a roof layer on the insulation substrate and etching the roof layer to form a liquid crystal injection hole therein; and removing the sacrificial layer exposed through the liquid crystal injection hole to form a microcavity.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: February 23, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae Woo Lim, Kyung Tae Chae, Sung Hwan Won, Seon Uk Lee, Jun Heui Lee
  • Patent number: 9229257
    Abstract: A liquid crystal display includes: an insulation substrate; a microcavity layer disposed on the insulation substrate and having a reversed taper side wall; a pixel electrode disposed in the microcavity layer on the insulation substrate; a liquid crystal layer disposed in the microcavity layer; and a common electrode which covers the liquid crystal layer.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: January 5, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyung Tae Chae, Sung Hwan Won, Yeun Tae Kim, Won Tae Kim, Seon Uk Lee
  • Publication number: 20150355500
    Abstract: A liquid crystal display according to an exemplary embodiment includes: a substrate; a thin film transistor disposed on the substrate; a pixel electrode connected to the thin film transistor; and color filters disposed to face the pixel electrode, wherein a plurality of microcavities are between the pixel electrode and the color filters, the microcavities form a liquid crystal layer including a liquid crystal material, the microcavities are divided by a partition portion, and the partition portion is formed by a color filter of one color among the color filters.
    Type: Application
    Filed: October 8, 2014
    Publication date: December 10, 2015
    Inventors: Pil Sook KWON, Seon Uk LEE, Jun Heui LEE
  • Publication number: 20150346561
    Abstract: A display device includes: a common voltage line formed on a display unit and at an outer side of the display unit; a first insulating layer formed on a thin film transistor on the display unit; a pixel electrode formed on the first insulating layer; a liquid crystal layer disposed in a microcavity formed on the pixel electrode; a common electrode spaced apart from the pixel electrode with the liquid crystal layer interposed therebetween; the common electrode contacting the common voltage line at the outer side of the display unit through a contact hole; a second insulating layer formed on the common electrode; a roof layer formed on the second insulating layer; an injection hole formed on the common electrode, second insulating layer, and roof layer; and an overcoat formed on the roof layer covering the injection hole and sealing the microcavity, wherein the roof layer covers the contact hole.
    Type: Application
    Filed: October 21, 2014
    Publication date: December 3, 2015
    Inventors: Won Tae KIM, Yu Jin KIM, Seon Uk LEE, Kyung Tae CHAE
  • Patent number: 9201257
    Abstract: A liquid crystal display includes: an insulation substrate; a microcavity layer disposed on the insulation substrate and having a reversed taper side wall; a pixel electrode disposed in the microcavity layer on the insulation substrate; a liquid crystal layer disposed in the microcavity layer; and a common electrode which covers the liquid crystal layer.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: December 1, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyung Tae Chae, Sung Hwan Won, Yeun Tae Kim, Won Tae Kim, Seon Uk Lee
  • 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
  • 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
  • Patent number: 9140939
    Abstract: A manufacturing method of a liquid crystal display includes forming a sacrificial layer on a liquid crystal panel, forming an etch stop layer on the sacrificial layer, forming a photo resist pattern on the etch stop layer, completing the etch stop layer using the photo resist pattern as a mask, ashing the photo resist pattern and the sacrificial layer by using the completed etch stop layer as a mask, forming a microcavity by removing a portion of the sacrificial layer and forming a liquid crystal layer in the microcavity.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: September 22, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seon Uk Lee, Won Tae Kim, Yu Jin Kim, Woo Jae Lee, Kyung-Tae Chae
  • Patent number: 9122104
    Abstract: A display apparatus and a method of manufacturing a display apparatus are disclosed. A display may include a base substrate, a plurality of pixel rows each of which includes a plurality of pixels arranged both in a first direction and in a second direction, a sealant layer covering the pixel rows, and a trench disposed between the pixel rows. Each pixel row may include a plurality of active cavities arranged along the trench and a drain cavity disposed on at least one end of the trench. A capillary force decreases along the active cavities, the drain cavity, and the trench.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: September 1, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Junheui Lee, Seon Uk Lee, Dong Hwan Kim, Haeju Yun, Hee-Keun Lee
  • Publication number: 20150234227
    Abstract: A liquid crystal display includes: a substrate; a thin film transistor; a pixel electrode; an insulating layer; a plurality of microcavities; and a partition. The thin film transistor is disposed on the substrate. The pixel electrode is connected to the thin film transistor. The insulating layer is disposed to face the pixel electrode. The microcavities are between the pixel electrode and the insulating layer, wherein the microcavities include a liquid crystal material. The partition is between the microcavities, wherein the partition has a bar shape and is disposed on the insulating layer.
    Type: Application
    Filed: August 11, 2014
    Publication date: August 20, 2015
    Inventors: Seok-Joon HONG, Seon Uk LEE, Tae Woo LIM
  • Publication number: 20150234214
    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: January 22, 2015
    Publication date: August 20, 2015
    Inventors: Seok-Joon HONG, Ji Seong YANG, Tae Woo LIM, Seon Uk LEE, Kyung Tae CHAE