Patents by Inventor Yeun-Tae Kim

Yeun-Tae Kim 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: 9581866
    Abstract: A manufacturing method of a display device includes: forming a thin film transistor on a substrate; forming a pixel electrode connected to the thin film transistor in at least one of the plurality of pixel areas on the substrate; forming a sacrificial layer on the pixel electrode; forming an opening in the sacrificial layer by removing at least a part of the sacrificial layer; forming a roof layer on the sacrificial layer and forming a support member in the opening; forming an injection hole by patterning the roof layer to expose at least a part of the sacrificial layer; forming a microcavity between the pixel electrode and the roof layer by removing the sacrificial layer; forming a liquid crystal layer in the microcavity by injecting a liquid crystal material through the injection hole; and forming an encapsulation layer on the roof layer to seal the microcavity.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: February 28, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soo Jung Lee, Yeun Tae Kim, Hee-Keun Lee, Sung Jun Kim, Sung Woo Cho
  • Patent number: 9581862
    Abstract: A liquid crystal display according to the present inventive concept includes: a substrate; a gate line and a data line crossing each other formed on the substrate; a thin film transistor connected to the gate line and the data line; a pixel electrode connected to the thin film transistor and having a slit at a center; a liquid crystal layer filling a plurality of microcavities positioned on the pixel electrode; a common electrode positioned on the liquid crystal layer; and a roof layer formed on the common electrode and having an oblique portion formed to be inclined at both outer sides of the microcavities.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: February 28, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang Soo Bae, Yeun Tae Kim, Hae Ju Yun, Yong Seok Kim, Dae Ho Song
  • Patent number: 9570480
    Abstract: A liquid crystal display includes a thin film transistor on a substrate, a pixel electrode connected to a first terminal of the thin film transistor, a roof layer above the pixel electrode, a microcavity between the pixel electrode and the roof layer, the microcavity including a liquid crystal injection hole, a partition wall in the microcavity, the partition wall partitioning the microcavity into a first area and a second area, and a liquid crystal layer with liquid crystal molecules in the microcavity, the liquid crystal molecules in the first area being a different type than the liquid crystal molecules in the second area.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: February 14, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hee-Keun Lee, Yeun Tae Kim, Dae Ho Song, Hae Ju Yun, Soo Jung Lee
  • Patent number: 9500913
    Abstract: A display device includes a substrate including a pixel area, 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, a space formed between the pixel electrode and the common electrode, and a roof layer formed on the common electrode. The common electrode and the roof layer include a protrusion protruding from at least one of an upper edge and a lower edge of the pixel area.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: November 22, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hee Keun Lee, Yeun Tae Kim, Nam Seok Roh, Hae Ju Yun
  • Patent number: 9496295
    Abstract: A method of manufacturing a liquid crystal display includes: forming a sacrificial layer by stacking a non-photosensitive resin; initiating formation of an etch stop layer on the sacrificial layer; forming a photoresist pattern; completing the etch stop layer using the photoresist pattern; ashing the photoresist pattern and the sacrificial layer by using the completed etch stop layer as a mask; forming a microcavity by removing the sacrificial layer; and forming a liquid crystal layer in the microcavity. The horizontal area occupied by the sacrificial layer is reduced by forming the common electrode or the etch stop layer at an upper side, thereby increasing the aperture ratio. Further, the vertical electric field is generated without distortion by horizontally forming the common electrode on the sacrificial layer and forming no common electrode on the sidewall thereof.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: November 15, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Koichi Sugitani, Hoon Kang, Yeun Tae Kim, Kyung Tae Chae
  • Patent number: 9488874
    Abstract: Provided is a liquid crystal display. The liquid crystal display comprises a substrate having a plurality of pixel areas; a first electrode on the substrate in each of the pixel areas; a fine space layer positioned on the first electrode; a roof layer defining the fine space layer between the substrate and the roof layer and including a liquid crystal injection port; a second electrode on a bottom surface of the roof layer; and a supporter on the liquid crystal injection port and divided into a plurality of portions to define a filling space.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: November 8, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwang Soo Bae, Sung Woo Cho, Yeun Tae Kim, Sung Hwan Won
  • Patent number: 9482917
    Abstract: The present invention relates to a display device and a manufacturing method thereof, wherein a spoilage layer generated in a manufacturing process is removed, and a manufacturing method of a display device according to an exemplary embodiment of the present invention includes: forming a thin film transistor on a substrate including a plurality of pixel areas; forming a pixel electrode connected to the thin film transistor in the pixel area; forming a sacrificial layer on the pixel electrode; forming a barrier layer on the sacrificial layer; forming a common electrode on the barrier layer; forming a roof layer on the common electrode; patterning the barrier layer, the common electrode, and the roof layer to exposed a portion of the sacrificial layer thereby forming an injection hole; removing the sacrificial layer to form a microcavity for a plurality of pixel areas; removing the barrier layer.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: November 1, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hong Sick Park, Seon-Il Kim, Min Ho Moon, Hyang-Shik Kong, Yeun Tae Kim, Chang Oh Jeong
  • Publication number: 20160178944
    Abstract: A manufacturing method of a display device includes: forming a thin film transistor on a substrate; forming a pixel electrode connected to the thin film transistor in at least one of the plurality of pixel areas on the substrate; forming a sacrificial layer on the pixel electrode; forming an opening in the sacrificial layer by removing at least a part of the sacrificial layer; forming a roof layer on the sacrificial layer and forming a support member in the opening; forming an injection hole by patterning the roof layer to expose at least a part of the sacrificial layer; forming a microcavity between the pixel electrode and the roof layer by removing the sacrificial layer; forming a liquid crystal layer in the microcavity by injecting a liquid crystal material through the injection hole; and forming an encapsulation layer on the roof layer to seal the microcavity.
    Type: Application
    Filed: February 29, 2016
    Publication date: June 23, 2016
    Inventors: Soo Jung Lee, Yeun Tae Kim, Hee-Keun Lee, Sung Jun Kim, Sung Woo Cho
  • Publication number: 20160147106
    Abstract: A display device includes: a display panel; a backlight unit formed under the display panel; and a side chassis formed to be bent over the display panel and under the backlight unit while enclosing an edge side of the display panel and the backlight unit, wherein an adhesive is filled inside the side chassis and in a space between the display panel and the backlight unit. The adhesive is filled inside the chassis formed at the edge of the panel such that damage to the display device may be prevented and durability may be improved.
    Type: Application
    Filed: April 30, 2015
    Publication date: May 26, 2016
    Inventors: Yeun Tae KIM, Min Su KIM, Soo Jung LEE
  • Patent number: 9336702
    Abstract: A display apparatus includes an image data comparator which receives first, second and third color image data, extracts first, second and third image data from the first, second and third color image date by comparing gray scale values of the first, second and third color image date such that each of grayscale values of the second and third image data is greater than or equal to a gray scale value of the first image data, and compares the gray scale value of the first image data with a predetermined gray scale value, a driving circuit which generates a gray scale signal based on a result of the comparison and generates first and second color signals based on the first, second or third image data, and a pixel including a first sub-pixel which receives the gray scale signal, second and third sub-pixels which receive the first and second color signals, respectively.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: May 10, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sangil Kim, Jang-Kyum Kim, Myung-Eun Kim, Namseok Roh, Gilhwan Yeo, Yeun Tae Kim, KyoungHo Lim
  • 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
  • Publication number: 20160109745
    Abstract: The present invention relates to a display device and a manufacturing method thereof, wherein a spoilage layer generated in a manufacturing process is removed, and a manufacturing method of a display device according to an exemplary embodiment of the present invention includes: forming a thin film transistor on a substrate including a plurality of pixel areas; forming a pixel electrode connected to the thin film transistor in the pixel area; forming a sacrificial layer on the pixel electrode; forming a barrier layer on the sacrificial layer; forming a common electrode on the barrier layer; forming a roof layer on the common electrode; patterning the barrier layer, the common electrode, and the roof layer to exposed a portion of the sacrificial layer thereby forming an injection hole; removing the sacrificial layer to form a microcavity for a plurality of pixel areas; removing the barrier layer.
    Type: Application
    Filed: December 29, 2015
    Publication date: April 21, 2016
    Inventors: Hong Sick PARK, Seon-Il Kim, Min Ho Moon, Hyang-Shik KONG, Yeun Tae KIM, Chang Oh JEONG
  • Publication number: 20160103377
    Abstract: A liquid crystal display according to the present inventive concept includes: a substrate; a gate line and a data line crossing each other formed on the substrate; a thin film transistor connected to the gate line and the data line; a pixel electrode connected to the thin film transistor and having a slit at a center; a liquid crystal layer filling a plurality of microcavities positioned on the pixel electrode; a common electrode positioned on the liquid crystal layer; and a roof layer formed on the common electrode and having an oblique portion formed to be inclined at both outer sides of the microcavities.
    Type: Application
    Filed: March 17, 2015
    Publication date: April 14, 2016
    Inventors: Kwang Soo BAE, Yeun Tae KIM, Hae Ju YUN, Yong Seok KIM, Dae Ho SONG
  • Patent number: 9274382
    Abstract: A display device includes: a substrate including a plurality of pixel areas; a thin film transistor formed on the substrate; a pixel electrode connected to the thin film transistor and formed in at least one of the plurality of pixel areas; a roof layer formed on the pixel electrode to be spaced apart from the pixel electrode by a microcavity therebetween; an injection hole formed on the roof layer so as to expose a part of the microcavity; a liquid crystal layer configured to fill the microcavity; at least one support member adjacent to the injection hole and formed in a column shape in the microcavity; and an encapsulation layer formed on the roof layer so as to cover the injection hole to seal the microcavity.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: March 1, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soo Jung Lee, Yeun Tae Kim, Hee-Keun Lee, Sung Jun Kim, Sung Woo Cho
  • Publication number: 20160055809
    Abstract: A display device includes a substrate and pixels arranged on the substrate in a matrix form. The substrate includes a display area in which the pixels are arranged and a non-display area disposed adjacent to a side of the display area. Each pixel includes a cover layer that extends in a row direction that includes a sidewall portion connected to the substrate and a cover portion spaced apart from the substrate and connected to the sidewall portion to define a tunnel-shaped cavity on the substrate. A width of the sidewall portion between adjacent pixels is less than a width of the sidewall portion disposed at an outermost position, and the cover layer seals one side of the tunnel-shaped cavity in the pixels arranged in a first row and a last row.
    Type: Application
    Filed: November 3, 2015
    Publication date: February 25, 2016
    Inventors: YEUN TAE KIM, HEE-KEUN LEE, JAEKEUN LIM
  • Patent number: 9261736
    Abstract: The substrate of a liquid crystal display has a non-square rectangular shape and is bent such that the longer edges of the rectangular shape are nonlinear while the shorter edges are linear. Liquid crystal containerizing micro-cavities of the display are organized to be elongated in the extending direction of the nonlinear longer edges of the substrate while gate lines and liquid crystal injection holes forming areas are formed extending in the extending direction of the linear shorter edges of the substrate. Concentration of mechanical stresses may be reduced due to this configuration.
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: February 16, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yeun Tae Kim, Dae Ho Song, Soo Jung Lee, Hee-Keun Lee, Ji Yeon Choi
  • Patent number: 9244302
    Abstract: The present invention relates to a display device and a method of manufacturing the display device. The display device according to an exemplary embodiment of the present invention includes a substrate. A pixel electrode is formed on the substrate. A roof layer is formed on the pixel electrode. A first micro-cavity and a second micro-cavity are disposed between the pixel electrode and the roof layer. A liquid crystal fills the first and second micro-cavities. The first and second micro-cavities are connected to each other by a path. The path penetrates the roof layer.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: January 26, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae Woo Lim, Hee-Keun Lee, Hoon Kang, Sung Ju Kim, Yeun Tae Kim, Yu Deok Seo, Koichi Sugitani, Chae Kyung Tae, Cha-Dong Kim
  • Patent number: 9235074
    Abstract: The present invention relates to a display device and a manufacturing method thereof, wherein a spoilage layer generated in a manufacturing process is removed, and a manufacturing method of a display device according to an exemplary embodiment of the present invention includes: forming a thin film transistor on a substrate including a plurality of pixel areas; forming a pixel electrode connected to the thin film transistor in the pixel area; forming a sacrificial layer on the pixel electrode; forming a barrier layer on the sacrificial layer; forming a common electrode on the barrier layer; forming a roof layer on the common electrode; patterning the barrier layer, the common electrode, and the roof layer to exposed a portion of the sacrificial layer thereby forming an injection hole; removing the sacrificial layer to form a microcavity for a plurality of pixel areas; removing the barrier layer.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: January 12, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hong Sick Park, Seon-II Kim, Min Ho Moon, Hyang-Shik Kong, Yeun Tae Kim, Chang Oh Jeong
  • Publication number: 20160004112
    Abstract: Provided is a liquid crystal display. The liquid crystal display comprises a substrate having a plurality of pixel areas; a first electrode on the substrate in each of the pixel areas; a fine space layer positioned on the first electrode; a roof layer defining the fine space layer between the substrate and the roof layer and including a liquid crystal injection port; a second electrode on a bottom surface of the roof layer; and a supporter on the liquid crystal injection port and divided into a plurality of portions to define a filling space.
    Type: Application
    Filed: October 24, 2014
    Publication date: January 7, 2016
    Inventors: Kwang Soo BAE, Sung Woo CHO, Yeun Tae KIM, Sung Hwan WON
  • 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