Patents by Inventor Sang-Gun Choi

Sang-Gun Choi 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: 20160170254
    Abstract: A liquid crystal display (LCD) according to an exemplary embodiment includes: a substrate including a display area and a peripheral area; a thin film transistor disposed on the substrate; a field generating electrode connected to the thin film transistor; a partition wall disposed along the peripheral area; a roof layer facing the field generating electrode; a roof pattern covering the partition wall; and a liquid crystal layer disposed between the field generating electrode and the roof layer and formed as a plurality of microcavities including liquid crystal molecules. The roof layer and the roof pattern are formed of at least one inorganic layer.
    Type: Application
    Filed: July 9, 2015
    Publication date: June 16, 2016
    Inventors: Seung-Yeon CHAE, Sang Gun CHOI, Han Su KIM, Tae Woon CHA
  • Patent number: 9366897
    Abstract: The present invention provides a display device including a substrate including a plurality of pixel areas, a thin film transistor formed on the substrate, a common electrode and a pixel electrode formed on the thin film transistor, a liquid crystal layer filling a microcavity formed on the common electrode and the pixel electrode, a lower insulating layer formed to be spaced apart from the common electrode and the pixel electrode, a roof layer formed on the lower insulating layer, an intermediate insulating layer formed on the roof layer, a first touch sensing electrode formed on the intermediate insulating layer, an injection hole partially exposing the microcavity formed in the roof layer, the intermediate insulating layer, and the first touch sensing electrode, an overcoat formed on the first touch sensing electrode to cover the injection hole and sealing the microcavity, and a second touch sensing electrode formed on the overcoat.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: June 14, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Gun Choi, Seung-Yeon Chae, Hee-Keun Lee, Tae Woon Cha
  • Publication number: 20160147094
    Abstract: A display device includes: a display substrate including a display area including a plurality of pixel areas and a non-display area at edge sides of the display area; and an aligning agent-accommodating structure including a capping layer disposed in the non-display area to be opened inward of the display substrate. The aligning agent-accommodating structure accommodates an aligning agent applied to the display area.
    Type: Application
    Filed: July 6, 2015
    Publication date: May 26, 2016
    Inventors: Sang Gun CHOI, Seung-Yeon CHAE, Tae Woon CHA
  • Publication number: 20160077265
    Abstract: A display panel includes an array substrate, an opposite substrate facing the array substrate, and a liquid crystal layer between the substrates. The array substrate includes a first polarizer, a first insulating layer covering the first metal layer, a gate electrode on the first insulating layer, a gate insulation layer on the gate electrode, a channel layer on the gate insulation layer, source and drain electrodes on the channel layer, a protecting layer covering the source and drain electrodes and including a contact hole exposing the drain electrode, and a first electrode on the protecting layer and electrically connected to the drain electrode through the contact hole. The first polarizer includes a first substrate, a first antistatic layer on the first substrate and including a conductive material, and a first metal layer on the first antistatic layer and including a plurality of protrusions which form a wire grid pattern.
    Type: Application
    Filed: November 4, 2015
    Publication date: March 17, 2016
    Inventors: Sang-Gun CHOI, Woo-Yong SUNG, Tae-Woon CHA
  • Publication number: 20160062159
    Abstract: A display device and a method of manufacturing the display device are provided. Moisture may be prevented from penetrating into the display device. The display device includes a substrate including a pixel area. A thin film transistor is formed on the substrate. A pixel electrode is connected to the thin film transistor and formed in the pixel area. A roof layer is formed on the pixel electrode. The roof layer is separated from the pixel electrode via a microcavity. A liquid crystal layer fills the microcavity. A liquid crystal injection hole is formed in the roof layer and exposes a portion of the microcavity. An encapsulation layer is formed on the roof layer. The encapsulation layer covers the liquid crystal injection hole and seals the microcavity for the pixel area. The encapsulation layer includes a multilayer structure.
    Type: Application
    Filed: November 12, 2015
    Publication date: March 3, 2016
    Inventors: A Ram Lee, Woo Yong Sung, Tae Gyun Kim, Seung-Yeon Chae, Sang Gun Choi, Tae Woon Cha
  • Publication number: 20160011447
    Abstract: The present invention provides a display device including a substrate including a plurality of pixel areas, a thin film transistor formed on the substrate, a common electrode and a pixel electrode formed on the thin film transistor, a liquid crystal layer filling a microcavity formed on the common electrode and the pixel electrode, a lower insulating layer formed to be spaced apart from the common electrode and the pixel electrode, a roof layer formed on the lower insulating layer, an intermediate insulating layer formed on the roof layer, a first touch sensing electrode formed on the intermediate insulating layer, an injection hole partially exposing the microcavity formed in the roof layer, the intermediate insulating layer, and the first touch sensing electrode, an overcoat formed on the first touch sensing electrode to cover the injection hole and sealing the microcavity, and a second touch sensing electrode formed on the overcoat.
    Type: Application
    Filed: December 9, 2014
    Publication date: January 14, 2016
    Inventors: Sang Gun Choi, Seung-Yeon Chae, Hee-Keun Lee, Tae Woon Cha
  • Patent number: 9231222
    Abstract: A thin film transistor (“TFT”) includes a gate electrode, a gate insulating layer, a source electrode, a drain electrode and a semiconductor layer. The gate insulating layer is disposed on the gate electrode. The source electrode is disposed on the gate insulating layer. The drain electrode is disposed on the gate insulating layer. The drain electrode is spaced apart from the source electrode. The semiconductor layer is disposed on the gate insulating layer. The semiconductor layer makes contact with a side surface of the source electrode and a side surface of the drain electrode.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: January 5, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Woo-Yong Sung, Dong-Hwan Kim, Jeong-Ho Lee, Tae-Woon Cha, Sang-Gun Choi
  • Patent number: 9223171
    Abstract: A display panel includes an array substrate, an opposite substrate facing the array substrate, and a liquid crystal layer between the substrates. The array substrate includes a first polarizer, a first insulating layer covering the first metal layer, a gate electrode on the first insulating layer, a gate insulation layer on the gate electrode, a channel layer on the gate insulation layer, source and drain electrodes on the channel layer, a protecting layer covering the source and drain electrodes and including a contact hole exposing the drain electrode, and a first electrode on the protecting layer and electrically connected to the drain electrode through the contact hole. The first polarizer includes a first substrate, a first antistatic layer on the first substrate and including a conductive material, and a first metal layer on the first antistatic layer and including a plurality of protrusions which form a wire grid pattern.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: December 29, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang-Gun Choi, Woo-Yong Sung, Tae-Woon Cha
  • Patent number: 9202824
    Abstract: A display panel includes a substrate, a gate line, a color filter and a roof layer. The substrate includes a thin film transistor disposed thereon. The gate line extends along a first direction on the substrate and is connected to the thin film transistor. The color filter is disposed on the substrate. The roof layer is disposed on the color filter and is configured to define a tunnel-shaped cavity between the roof layer and the color filter. The tunnel-shaped cavity extends along a second direction crossing the first direction. A cross-sectional thickness of an area of the roof layer adjacent to the gate lines is smaller than a cross-sectional thickness of another area of the roof layer spaced apart from the gate lines.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: December 1, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Han-Su Kim, Ha-Young Park, Seung-Yeon Chae, Sang-Gun Choi, Se-Hee Han, Tae-Woon Cha
  • Patent number: 9188814
    Abstract: A display device and a method of manufacturing the display device are provided. Moisture may be prevented from penetrating into the display device. The display device includes a substrate including a pixel area. A thin film transistor is formed on the substrate. A pixel electrode is connected to the thin film transistor and formed in the pixel area. A roof layer is formed on the pixel electrode. The roof layer is separated from the pixel electrode via a microcavity. A liquid crystal layer fills the microcavity. A liquid crystal injection hole is formed in the roof layer and exposes a portion of the microcavity. An encapsulation layer is formed on the roof layer. The encapsulation layer covers the liquid crystal injection hole and seals the microcavity for the pixel area. The encapsulation layer includes a multilayer structure.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: November 17, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: A Ram Lee, Woo Yong Sung, Tae Gyun Kim, Seung-Yeon Chae, Sang Gun Choi, Tae Woon Cha
  • Patent number: 9151946
    Abstract: A method of manufacturing an electrowetting display device includes a preliminary partition wall pattern formed on a lower substrate on which a pixel electrode of an oxide series and an insulation layer are formed. The preliminary partition wall pattern is disposed along a boundary of the pixel electrode. A water-repellent layer including a self-assembled monolayer having a hydrophobic property is formed on the lower substrate. A portion of the preliminary partition wall pattern and the water-repellent layer formed on the preliminary partition wall pattern are removed to form a partition wall pattern on the insulation layer and to form a water-repellent pattern on the pixel electrode and the insulation layer between partition walls of the partition wall patterns. A fluid layer is formed on the lower substrate on which the water-repellent pattern is formed. The lower substrate and an upper substrate are combined with each other.
    Type: Grant
    Filed: November 23, 2012
    Date of Patent: October 6, 2015
    Assignee: Amazon Technologies, Inc.
    Inventors: Woo-Yong Sung, A-Ram Lee, Tae-Gyun Kim, Tae-Woon Cha, Sang-Gun Choi
  • Publication number: 20150268502
    Abstract: A liquid crystal display comprises: a substrate having a plurality of pixel regions; first electrode formed on the substrate in each of the pixel regions and including a plurality of separated branch electrodes; a cover layer forming a cavity with the substrate, the cover layer including side walls formed on the substrate to partition the plurality of pixel regions and a roof formed on the side walls; a second electrode formed on a bottom surface of the cover layer; a capping layer formed in the cavity to cover the first electrode on the substrate and to cover the second electrode on the bottom surface of the roof; an alignment layer formed on the capping layer; and a liquid crystal layer formed through injection of liquid crystal molecules into the cavity.
    Type: Application
    Filed: September 8, 2014
    Publication date: September 24, 2015
    Inventors: Woo Yong Sung, A Ram Lee, Tae Woon Cha, Seung Yeon Chae, Sang Gun Choi
  • Patent number: 9139001
    Abstract: An inkjet print head includes a jet assembly, a printed-circuit board and a barrier coating film. The jet assembly includes a nozzle plate including a jet orifice in a lower surface of the nozzle plate and through which ink is discharged, and an ink transfer pathway inside nozzle plate. The printed-circuit board is combined with the jet assembly. The printed-circuit board includes an integrated circuit and a connection electrode. The barrier coating film includes organic material, a flexible layer and a hydrophobic layer. The barrier coating film covers an inner and an outer surface of the jet assembly, and an outer surface of the printed-circuit board. The barrier coating film exposes the lower surface of the nozzle plate and an outer surface of the connection electrode.
    Type: Grant
    Filed: November 17, 2012
    Date of Patent: September 22, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Woo-Yong Sung, A-Ram Lee, Tae-Gyun Kim, Tae-Woon Cha, Sang-Gun Choi
  • Publication number: 20150236041
    Abstract: A display panel includes a substrate, a gate line, a color filter and a roof layer. The substrate includes a thin film transistor disposed thereon. The gate line extends along a first direction on the substrate and is connected to the thin film transistor. The color filter is disposed on the substrate. The roof layer is disposed on the color filter and is configured to define a tunnel-shaped cavity between the roof layer and the color filter. The tunnel-shaped cavity extends along a second direction crossing the first direction. A cross-sectional thickness of an area of the roof layer adjacent to the gate lines is smaller than a cross-sectional thickness of another area of the roof layer spaced apart from the gate lines.
    Type: Application
    Filed: July 17, 2014
    Publication date: August 20, 2015
    Inventors: Han-Su KIM, Ha-Young PARK, Seung-Yeon CHAE, Sang-Gun CHOI, Se-Hee HAN, Tae-Woon CHA
  • Publication number: 20150234215
    Abstract: Provided is a display device capable of preventing a liquid crystal from being left outside a microcavity. The display device includes: a substrate; a pixel electrode formed on the substrate; a roof layer formed on the pixel electrode so as to be spaced apart from the pixel electrode with a plurality of microcavities therebetween; a light blocking member positioned between two microcavities of the plurality of microcavities, overlapping with a first edge of one microcavity of the two microcavities, and not overlapping with a second edge of the other microcavity; an injection hole exposing a part of the microcavity; a liquid crystal layer filling the microcavity; and an encapsulation layer formed on the roof layer so as to cover the injection hole to seal the microcavity.
    Type: Application
    Filed: August 14, 2014
    Publication date: August 20, 2015
    Inventors: Si Kwang KIM, Tae Gyun KIM, Hyoung Sub LEE, Woo Yong SUNG, Tae Woon CHA, Sang Gun CHOI
  • Patent number: 9030620
    Abstract: A display panel includes a substrate including a plurality of thin-film transistors thereon, a plurality of gate lines respectively connected to a thin film transistor and disposed on the substrate, a color filter layer disposed on the substrate and the gate lines, a black matrix disposed on the color filter and overlapped with the gate lines, and a hole defined in the black matrix and exposing the color filter layer, a first electrode disposed on the color filter and electrically connected to the thin-film transistor and an image displaying layer disposed on the first electrode.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: May 12, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Yeon Chae, Sang-Gun Choi, A-Ram Lee, Tae-Woon Cha
  • Publication number: 20150092130
    Abstract: A liquid crystal display includes: a substrate; a thin film transistor comprising one or more terminals and disposed on the substrate; a pixel electrode connected to one of the terminals of the thin film transistor; and a roof layer disposed to face the pixel electrode, wherein a microcavity is formed between the pixel electrode and the roof layer, the microcavity including a liquid crystal material, wherein a plurality of microcavities are disposed along a first row and a second row adjacent to each other, a trench is formed between the first row and the second row, and at least one bridge connecting the first row and the second row is disposed at the trench.
    Type: Application
    Filed: March 6, 2014
    Publication date: April 2, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Hyoung Sub Lee, Tae Gyun Kim, Woo Yong Sung, Nak Cho Choi, Sang Gun Choi, Si Kwang Kim, Tae Woon Cha
  • Publication number: 20150092131
    Abstract: A liquid crystal display includes a substrate, a thin film transistor disposed on the substrate, a pixel electrode disposed on the thin film transistor, a roof layer facing the pixel electrode, and at least one partition wall disposed along an edge of the substrate, in which a plurality of microcavities is formed between the pixel electrode and the roof layer, and the plurality of microcavities includes a liquid crystal material.
    Type: Application
    Filed: April 10, 2014
    Publication date: April 2, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: A Ram Lee, Seung-Yeon Chae, Sang Gun Choi, Ha-Young Park, Tae-Woon Cha, Se Hee Han
  • Publication number: 20150092143
    Abstract: Provided are a liquid crystal display and a method of fabricating the liquid crystal display. The liquid crystal display comprises: a substrate; a signal electrode on the substrate; a first light-blocking pattern on the signal electrode and having a trench extending to and exposing at least part of the signal electrode; and a second light-blocking pattern on the trench of the first light-blocking pattern and covering the signal electrode, wherein the second light-blocking pattern comprises at least one metal layer.
    Type: Application
    Filed: February 5, 2014
    Publication date: April 2, 2015
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae Woon CHA, Sang Gun CHOI, Ha Young PARK
  • Publication number: 20140368770
    Abstract: A display panel includes a substrate including a plurality of thin-film transistors thereon, a plurality of gate lines respectively connected to a thin film transistor and disposed on the substrate, a color filter layer disposed on the substrate and the gate lines, a black matrix disposed on the color filter and overlapped with the gate lines, and a hole defined in the black matrix and exposing the color filter layer, a first electrode disposed on the color filter and electrically connected to the thin-film transistor and an image displaying layer disposed on the first electrode.
    Type: Application
    Filed: October 18, 2013
    Publication date: December 18, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Seung-Yeon CHAE, Sang-Gun CHOI, A-Ram LEE, Tae-Woon CHA