Patents by Inventor Tae-woon Cha

Tae-woon Cha 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: 10162092
    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: November 4, 2015
    Date of Patent: December 25, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang-Gun Choi, Woo-Yong Sung, Tae-Woon Cha
  • Patent number: 9568728
    Abstract: An electrowetting display device includes a first substrate comprising a wall pattern surrounding a pixel electrode disposed in a display area of the first substrate, a spaced apart second substrate comprising a common electrode and a dam member disposed in a peripheral area surrounding the display area. The dam member has sealable openings (a.k.a. sealable dam spillways) through which there is discharged an excess portion of an excessively supplied wetting layer, the discharge of the excess occurring while the first and second substrates are brought together about top and bottom portions of a sealing ring that seals them together.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: February 14, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Hwan Kim, Sung-Ku Baek, Gil-Hwan Yeo, Tae-Woon Cha, Gyung-Mo Tahk
  • Publication number: 20160349499
    Abstract: An electrowetting display device includes a first substrate comprising a wall pattern surrounding a pixel electrode disposed in a display area of the first substrate, a spaced apart second substrate comprising a common electrode and a dam member disposed in a peripheral area surrounding the display area. The dam member has sealable openings (a.k.a. sealable dam spillways) through which there is discharged an excess portion of an excessively supplied wetting layer, the discharge of the excess occurring while the first and second substrates are brought together about top and bottom portions of a sealing ring that seals them together.
    Type: Application
    Filed: August 11, 2016
    Publication date: December 1, 2016
    Inventors: Dong-Hwan KIM, Sung-Ku BAEK, Gil-Hwan YEO, Tae-Woon CHA, Gyung-Mo TAHK
  • Patent number: 9442284
    Abstract: An electrowetting display device includes a first substrate comprising a wall pattern surrounding a pixel electrode disposed in a display area of the first substrate, a spaced apart second substrate comprising a common electrode and a dam member disposed in a peripheral area surrounding the display area. The dam member has sealable openings (a.k.a. sealable dam spillways) through which there is discharged an excess portion of an excessively supplied wetting layer, the discharge of the excess occurring while the first and second substrates are brought together about top and bottom portions of a sealing ring that seals them together.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: September 13, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong-Hwan Kim, Sung-Ku Baek, Gil-Hwan Yeo, Tae-Woon Cha, Gyung-Mo Tahk
  • Patent number: 9356050
    Abstract: A display apparatus includes a substrate; a cavity layer; a display material layer; and a capping layer. The cavity layer includes a plurality of barriers arranged to be spaced apart from one another on the substrate and partitioning pixel regions, and a roof layer connecting upper parts of the plurality of barriers. The cavity layer forms a plurality of cavities including a cavity. The display material layer is formed in the cavity. The capping layer is formed on the cavity layer, the capping layer including a sealant and a plurality of fillers dispersed in the sealant.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: May 31, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Tae-Woon Cha, Woo-Yong Sung, Tae-Gyun Kim, Hyoung-Sub Lee
  • 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
  • Patent number: 9279976
    Abstract: An electrowetting display apparatus includes a first base substrate, a second base substrate which faces the first base substrate, a first electrode on the first base substrate, and a second electrode on the second base substrate, where the second electrode faces the first electrode. A barrier wall is on the first electrode, where the barrier wall defines a storage area. A surface of the first electrode and the barrier wall is overlapped by a barrier layer. In addition, a water-repellent layer is on the barrier layer which is in the storage area. First and second fluids are in the storage area, the first fluid is separate from the second fluid, and the first fluid or the second fluid has a polarity.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: March 8, 2016
    Assignee: Amazon Technologies, Inc.
    Inventors: Dong-Hwan Kim, Sang-Il Kim, Tae-Woon Cha, Myung-Hwan Kim, Woo Yong Sung, Jeongho Lee, Hyoung-Wook Lee, Hyeon Gu Cho
  • 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: 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
  • 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: 20150192806
    Abstract: A display apparatus includes a substrate; a cavity layer; a display material layer; and a capping layer. The cavity layer includes a plurality of barriers arranged to be spaced apart from one another on the substrate and partitioning pixel regions, and a roof layer connecting upper parts of the plurality of barriers. The cavity layer forms a plurality of cavities including a cavity. The display material layer is formed in the cavity. The capping layer is formed on the cavity layer, the capping layer including a sealant and a plurality of fillers dispersed in the sealant.
    Type: Application
    Filed: June 18, 2014
    Publication date: July 9, 2015
    Inventors: Tae-Woon CHA, Woo-Yong SUNG, Tae-Gyun KIM, Hyoung-Sub LEE
  • Patent number: 9034420
    Abstract: A method of manufacturing a touch screen substrate includes forming a sensing electrode on a substrate, spraying a first ink and a second ink on the substrate including the sensing electrode, where the first ink includes a first solvent and insulation balls having a first diameter and the second ink includes a second solvent and conductive balls having a second diameter smaller than the first diameter, and hardening the first and second inks on the substrate, to fix the insulation balls on the substrate and the conductive balls on the sensing electrode formed on the substrate.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: May 19, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Woo-Yong Sung, Tae-Woon Cha, Tae-Gyun Kim
  • 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: 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
  • Patent number: 8960857
    Abstract: An inkjet print head includes a main body including carbon allotrope, and an ink storage configured to store an ink and including a space defined in the main body. A protecting layer is on an inner surface of the main body, and includes parylene. An inorganic layer is on the protecting layer. An organic layer is on the inorganic layer.
    Type: Grant
    Filed: May 9, 2014
    Date of Patent: February 24, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Woo-Yong Sung, A-Ram Lee, Tae-Gyun Kim, Tae-Woon Cha
  • Publication number: 20150022875
    Abstract: An electrowetting display apparatus includes a first base substrate, a second base substrate which faces the first base substrate, a first electrode on the first base substrate, and a second electrode on the second base substrate, where the second electrode faces the first electrode. A barrier wall is on the first electrode, where the barrier wall defines a storage area. A surface of the first electrode and the barrier wall is overlapped by a barrier layer. In addition, a water-repellent layer is on the barrier layer which is in the storage area. First and second fluids are in the storage area, the first fluid is separate from the second fluid, and the first fluid or the second fluid has a polarity.
    Type: Application
    Filed: October 6, 2014
    Publication date: January 22, 2015
    Inventors: Dong-Hwan Kim, Sang-Il Kim, Tae-Woon Cha, Myung-Hwan Kim, Woo Yong Sung, Jeongho Lee, Hyoung-Wook Lee, Hyeon Gu Cho
  • 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