Patents by Inventor Woo Yong Sung

Woo Yong Sung 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: 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: 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
  • 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
  • Publication number: 20150138469
    Abstract: A display device is provided. The display device includes a substrate including a plurality of pixel areas; a thin film transistor disposed on the substrate; a first insulating layer disposed on the thin film transistor; a pixel electrode connected to the thin film transistor and disposed on the first insulating layer; a common electrode separated from the pixel electrode with a microcavity interposed therebetween; a second insulating layer disposed on the common electrode; a roof layer disposed on the second insulating layer; a hydrophobic layer disposed on the roof layer and including a plurality of protrusions; an injection hole disposed in the common electrode, the second insulating layer, and the roof layer, the injection hole exposing a portion of the microcavity; a liquid crystal layer for filling the microcavity; and an overcoat formed on the roof layer and covering the injection hole, so as to seal the microcavity.
    Type: Application
    Filed: April 29, 2014
    Publication date: May 21, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Tae Gyun KIM, Hyoung Sub LEE, Tae Woon CHA, Woo Yong SUNG
  • 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
  • Publication number: 20150116637
    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; a plurality of microcavities formed between the pixel electrode and the roof layer, each microcavity including liquid crystal materials; a trench formed between the microcavities; and a buffer region formed at an end portion of the trench.
    Type: Application
    Filed: May 8, 2014
    Publication date: April 30, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Tae Gyun Kim, Woo Yong Sung, 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: 20150077833
    Abstract: An electrowetting display includes first and second substrates facing each other, an electrowetting layer, a first electrode, a second electrode, and a hydrophobic barrier layer. The electrowetting layer is disposed between the first substrate and the second substrate and includes a first fluid and a second fluid, and the first fluid has an electrical conductivity or a polarity. The first electrode is disposed on the first substrate, and the second electrode forms an electric field in cooperation with the first electrode to control a position of the first fluid. The hydrophobic barrier layer is disposed between the first substrate and the electrowetting layer to cover the first electrode and includes a first surface making contact with the first electrode and a second surface having a hydrophobicity stronger than a hydrophobicity of the first surface and making contact with the electrowetting layer.
    Type: Application
    Filed: November 20, 2014
    Publication date: March 19, 2015
    Inventors: SungHoon Yang, Woo Yong Sung
  • 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: 20150049286
    Abstract: A liquid crystal display includes a thin film transistor disposed on a substrate, a pixel electrode connected to the thin film transistor, a lower insulating layer disposed facing the pixel electrode, a roof layer disposed on the lower insulating layer, and a microcavity formed between the pixel electrode and the lower insulating layer. The microcavity includes a liquid crystal layer including a liquid crystal material. The liquid crystal display further includes a first groove formed between a first pixel area and a second pixel area, a second groove formed between the first pixel area and a third pixel area, wherein the first groove is covered by the roof layer, the second groove is exposed at a portion where the roof layer is removed, the first pixel area corresponds to the pixel electrode, and the first pixel area is disposed between the second pixel area and the third pixel area.
    Type: Application
    Filed: January 31, 2014
    Publication date: February 19, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Si Kwang KIM, Tae Gyun KIM, Woo Yong SUNG, Hyoung Sub LEE, Ha-Young PARK, Tae Woon CHA, Se Hee HAN
  • Publication number: 20150049316
    Abstract: An exposure apparatus includes a light source, an illuminating member, a projecting member, a stage, an inspecting member, and an information processing member. The light source is configured to provide a light in accordance with a pulse event generation (PEG) representing a period of light radiation. The illuminating member is configured to change the light into point lights. The projecting member is configured to project the point lights according to a photoresist shape extending in various directions. The point lights are projected on the stage. The inspecting member is configured to inspect a photoresist pattern formed by the projected point lights. The information processing member is configured to analyze different photoresist patterns corresponding to different PEGs to select one PEG from the different PEGs. The one PEG being associated with a minimum error in the various directions.
    Type: Application
    Filed: March 26, 2014
    Publication date: February 19, 2015
    Applicant: Samsung Display Co., Ltd.
    Inventors: Cha-Dong KIM, Hoon KANG, Chang-Hoon KIM, Sang-Hyun YUN, Jung-In PARK, Woo-Yong SUNG, Ki-Beom LEE, Hi-Kuk LEE, Jae-Hyuk CHANG
  • 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
  • Patent number: 8912026
    Abstract: Provided is a liquid crystal display including: a first substrate; a thin film transistor disposed on the first substrate; a passivation layer disposed on the thin film transistor and comprising a contact hole exposing an electrode of the thin film transistor; a pixel electrode disposed on the passivation layer and connected to the electrode of the thin film transistor through the contact hole; a lower buffer layer disposed on the pixel electrode; a lower alignment layer disposed on the lower buffer layer; a second substrate facing the first substrate; a common electrode disposed on the second substrate; an upper buffer layer disposed on the common electrode; and an upper alignment layer disposed on the upper buffer layer, in which the lower buffer layer comprises parylene, the upper buffer layer comprises parylene, or both the lower and the upper buffer layers comprise parylene.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: December 16, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Woo Yong Sung, Tae Woon Cha, Jeong Ho Lee, Sang Gun Choi, Hyoung Wook Lee
  • Publication number: 20140354922
    Abstract: A display device includes a substrate, a thin film transistor disposed on the substrate, and a pixel electrode electrically connected to the thin film transistor. The display device further includes a roof layer overlapping the pixel electrode with a cavity being positioned between the roof layer and the pixel electrode, the cavity having an opening. The display device further includes an alignment layer and a liquid crystal layer disposed inside the cavity. The display device further includes a plurality of bead members disposed at the opening and including a first bead member, a first portion of the first bead member being disposed inside the cavity, a second portion of the first bead member being disposed outside the cavity. The display device further includes an encapsulation layer overlapping the roof layer and overlapping the plurality of bead members.
    Type: Application
    Filed: March 20, 2014
    Publication date: December 4, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Woo Yong SUNG, Yeun Tae KIM, Tae Gyun KIM, Jae Cheol PARK, Hyoung Sub LEE, Tae Woon CHA
  • Patent number: 8902489
    Abstract: An electrowetting display includes first and second substrates facing each other, an electrowetting layer, a first electrode, a second electrode, and a hydrophobic barrier layer. The electrowetting layer is disposed between the first substrate and the second substrate and includes a first fluid and a second fluid, and the first fluid has an electrical conductivity or a polarity. The first electrode is disposed on the first substrate, and the second electrode forms an electric field in cooperation with the first electrode to control a position of the first fluid. The hydrophobic barrier layer is disposed between the first substrate and the electrowetting layer to cover the first electrode and includes a first surface making contact with the first electrode and a second surface having a hydrophobicity stronger than a hydrophobicity of the first surface and making contact with the electrowetting layer.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: December 2, 2014
    Assignee: Liquavista B.V.
    Inventors: SungHoon Yang, Woo Yong Sung
  • Publication number: 20140323008
    Abstract: The present invention relates to a liquid crystal display that maintains a more uniform cell gap and improves adherence between two display panels by improving adhesion between substrates and their bead spacers, as well as a manufacturing method thereof. An exemplary liquid crystal display includes: a first substrate and a second substrate facing each other; a bead spacer comprising a plurality of beads and a first adhesive coupling the beads to the first substrate; a second adhesive corresponding to the bead spacer and disposed on the second substrate so as to contact the bead spacer; and a liquid crystal layer disposed between the first substrate and the second substrate.
    Type: Application
    Filed: July 14, 2014
    Publication date: October 30, 2014
    Inventors: Woo Yong SUNG, Tae Woon CHA, Jeong Ho LEE, Hyoung Wook LEE
  • Publication number: 20140322846
    Abstract: Provided is a liquid crystal display including: a first substrate; a thin film transistor disposed on the first substrate; a passivation layer disposed on the thin film transistor and comprising a contact hole exposing an electrode of the thin film transistor; a pixel electrode disposed on the passivation layer and connected to the electrode of the thin film transistor through the contact hole; a lower buffer layer disposed on the pixel electrode; a lower alignment layer disposed on the lower buffer layer; a second substrate facing the first substrate; a common electrode disposed on the second substrate; an upper buffer layer disposed on the common electrode; and an upper alignment layer disposed on the upper buffer layer, in which the lower buffer layer comprises parylene, the upper buffer layer comprises parylene, or both the lower and the upper buffer layers comprise parylene.
    Type: Application
    Filed: July 10, 2014
    Publication date: October 30, 2014
    Inventors: Woo Yong SUNG, Tae Woon CHA, Jeong Ho LEE, Sang Gun CHOI, Hyoung Wook LEE
  • Patent number: 8872758
    Abstract: An electro-wetting display substrate includes a base substrate including a gate line extending in a first direction and a data line extending in a second direction, where the first direction is different from the second direction, a switching element electrically connected to the gate line and the data line, a pixel electrode electrically connected to the switching element, a notch electrode disposed adjacent to the switching element and overlapping the pixel electrode, and a water-repellent layer disposed over the pixel electrode.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: October 28, 2014
    Assignee: Liquavista B.V.
    Inventors: Sang-Gun Choi, Tae-Gyun Kim, Woo-Yong Sung, A-Ram Lee, Tae-Woon Cha, Seung-Yeon Chae, Hyoung-Sub Lee
  • Patent number: 8809864
    Abstract: Provided is a liquid crystal display including: a first substrate; a thin film transistor disposed on the first substrate; a passivation layer disposed on the thin film transistor and comprising a contact hole exposing an electrode of the thin film transistor; a pixel electrode disposed on the passivation layer and connected to the electrode of the thin film transistor through the contact hole; a lower buffer layer disposed on the pixel electrode; a lower alignment layer disposed on the lower buffer layer; a second substrate facing the first substrate; a common electrode disposed on the second substrate; an upper buffer layer disposed on the common electrode; and an upper alignment layer disposed on the upper buffer layer, in which the lower buffer layer comprises parylene, the upper buffer layer comprises parylene, or both the lower and the upper buffer layers comprise parylene.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: August 19, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Woo Yong Sung, Tae Woon Cha, Jeong Ho Lee, Sang Gun Choi, Hyoung Wook Lee
  • Patent number: 8801146
    Abstract: An inkjet print head includes a jet assembly which includes a nozzle plate, the nozzle plate including an ink transferring path on a bottom surface of the nozzle plate, and a jet jetting a transferred ink out of the head. A printed circuit substrate is connected to the jet assembly and includes an integrated circuit and a connection electrode. A barrier coating layer covers a surface of the printed circuit substrate and an inner surface and an outer surface of the jet assembly except a bottom surface of the nozzle plate and a surface of the connection electrode of the jet assembly and the printed circuit substrate being connected with each other. The barrier coating layer has a layered structure which includes a flexible layer, a diffusion barrier layer, and a hydrophobic layer.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: August 12, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Woo-Yong Sung, A-Ram Lee, Tae-Woon Cha, Tae-Gyun Kim, Hyoung Sub Lee, Seung-Yeon Chae, Sang Gun Choi