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).

  • 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: 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
  • Publication number: 20140160419
    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: April 11, 2013
    Publication date: June 12, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: A RAM LEE, WOO YONG SUNG, TAE GYUN KIM, SEUNG-YEON CHAE, SANG GUN CHOI, TAE WOON CHA
  • Publication number: 20140146278
    Abstract: A display panel with microcavities each having ends of asymmetric cross-sectional area. An exemplary display panel has a substrate; an electrode disposed on the substrate; and a supporting member disposed on the electrode. The supporting member is shaped to form a cavity between the supporting member and the electrode. The cavity has a first opening at one end of the supporting member and a second opening at an opposite end of the supporting member, the first opening being positioned over the electrode. A cross-sectional area of the first opening is smaller than a cross-sectional area of the second opening.
    Type: Application
    Filed: August 8, 2013
    Publication date: May 29, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Hee-Keun LEE, Hae Ju YUN, Jung Wook LEE, Seon Uk LEE, Dong Hwan KIM, Sung Jun KIM, Yeun Tae KIM, Hyoung Sub LEE, Sung Woo CHO, Tae Woon CHA, Sang Gun CHOI
  • Patent number: 8698158
    Abstract: A display substrate includes a pixel electrode, an m-th data line (‘m’ is a natural number), a floating electrode, a (m+1)-th data line and a storage electrode. The pixel electrode is disposed in a pixel area of the substrate. The m-th data line is disposed at a first side of the pixel electrode and electrically connected to the pixel electrode. The floating electrode partially overlaps with the m-th data line. The (m+1)-th data line is disposed at a second side of the pixel electrode. The storage electrode is spaced apart from the (m+1)-th data line.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: April 15, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Myung-Koo Hur, Sang-Gun Choi
  • Publication number: 20140028925
    Abstract: A manufacturing method of a liquid crystal display includes: providing a thin film transistor on a substrate; providing a pixel electrode connected to the thin film transistor; providing a microcavity layer including a liquid crystal material on the pixel electrode; providing a supporting member layer on the microcavity layer; patterning the supporting member layer to form a plurality of recess portions therein; and providing a plurality of touch signal lines for transmitting a touch signal in the plurality of recess portions.
    Type: Application
    Filed: November 29, 2012
    Publication date: January 30, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang Gun CHOI, Woo Yong SUNG, Tae Woon CHA
  • Publication number: 20140028956
    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: January 4, 2013
    Publication date: January 30, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang-Gun CHOI, Woo-Yong SUNG, Tae-Woon CHA
  • Publication number: 20130342607
    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: Application
    Filed: November 17, 2012
    Publication date: December 26, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Woo-Yong SUNG, A-Ram LEE, Tae-Gyun KIM, Tae-Woon CHA, Sang-Gun CHOI
  • Publication number: 20130335483
    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: Application
    Filed: October 17, 2012
    Publication date: December 19, 2013
    Applicant: 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
  • Publication number: 20130335804
    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: Application
    Filed: November 23, 2012
    Publication date: December 19, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Woo-Yong SUNG, A-Ram Lee, Tae-Gyun Kim, Tae-Woon Cha, Sang-Gun Choi
  • Patent number: 8593601
    Abstract: A display panel and a method for manufacturing the same are disclosed. The display panel includes: a first substrate, a touch spacer formed on a first substrate, a common electrode formed on the touch spacer, a second substrate opposing the first substrate, a sensing electrode facing the touch spacer on the second substrate and an alignment layer on the sensing electrode or the touch spacer, wherein the alignment layer has a thickness equal to or less than 500 ?.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: November 26, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Doo-hwan You, Young-je Cho, Byoung-jun Lee, Jun-pyo Lee, Sang-youn Han, Hyeong-jun Park, Yun-seok Lee, Sang-gun Choi, Hyun-duck Son
  • Publication number: 20130258262
    Abstract: A liquid crystal display includes a first substrate, a pixel electrode disposed on the first substrate, a first alignment layer disposed on the first substrate and the pixel electrode, a second substrate disposed opposite to the first substrate; a common electrode disposed on the second substrate, a second alignment layer disposed on the second substrate and the common electrode, and a liquid crystal layer disposed between the first substrate and the second substrate, in which the liquid crystal layer includes a plurality of liquid crystal molecules and a chiral dopant, and the first alignment layer and the second alignment layer include polymers formed by photo-polymerization of reactive mesogen.
    Type: Application
    Filed: September 13, 2012
    Publication date: October 3, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jeong Ho LEE, Jae Hong PARK, Oh Jeong KWON, Sung-Jae YUN, Tae Woon CHA, Sang Gun CHOI
  • Publication number: 20130177700
    Abstract: A liquid crystal dropping method and a liquid crystal display manufacturing method using the same are disclosed. The method for dropping a liquid crystal includes dropping a liquid crystal along a plurality of liquid crystal dropping routes on a display panel where a plurality of pixels are arranged in a matrix form, wherein a relative position of a first liquid crystal dropping route passing a first pixel among the plurality of pixels with respect to the first pixel, and a relative position of a second liquid crystal dropping route passing a second pixel among the plurality of pixels with respect to the second pixel, are substantially equivalent to each other.
    Type: Application
    Filed: May 16, 2012
    Publication date: July 11, 2013
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae Gyun KIM, Seung-Yeon CHAE, Sang Gun CHOI, A Ram LEE, Hyoung Sub LEE, Tae Woon CHA
  • Publication number: 20130175505
    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: Application
    Filed: August 14, 2012
    Publication date: July 11, 2013
    Inventors: Woo-Yong SUNG, Dong-Hwan KIM, Jeong-Ho LEE, Tae-Woon CHA, Sang-Gun CHOI
  • Patent number: 8390753
    Abstract: A liquid crystal display according to an exemplary embodiment of the present invention includes a colored subsidiary light blocking member covering a space between first and second pixel electrodes. First and third shield electrodes are placed under a data line. The first and third shield electrodes are disposed parallel to the data line and across the data line from each other. A second shield electrode connects the bottom end of the first shield electrode with the top end of the third shield electrode at an angle of about 30 degrees to about 150 degrees. With this structure, light leakage at a gap between the pixel electrode and a possible short between the shield electrodes are prevented.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: March 5, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Sang-Gun Choi
  • Publication number: 20120326172
    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: January 30, 2012
    Publication date: December 27, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Woo Yong SUNG, Tae Woon CHA, Jeong Ho LEE, Sang Gun CHOI, Hyoung Wook LEE
  • Patent number: 8304772
    Abstract: A thin-film transistor array panel and a manufacturing method thereof are provided for one or more embodiments. The thin-film transistor array panel may include: a substrate; a gate electrode formed on the substrate; a gate insulating layer formed on the gate electrode; a source electrode and a drain electrode formed on the gate insulating layer; and a flatness layer formed on the source electrode and the drain electrode, wherein the drain electrode has a higher height than the flatness layer.
    Type: Grant
    Filed: November 17, 2009
    Date of Patent: November 6, 2012
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yeo-Geon Yoon, Myung-Koo Hur, Sang-Gun Choi, Joo-Han Kim, Cheol-Gon Lee, Jung-Suk Bang