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: 9477110
    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: Grant
    Filed: April 29, 2014
    Date of Patent: October 25, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Tae Gyun Kim, Hyoung Sub Lee, Tae Woon Cha, Woo Yong Sung
  • 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: 9436041
    Abstract: A display includes a plurality of pixel columns and a plurality of pixel rows including a first pair of pixel rows and a second pair of pixel rows adjacent to each other. The LCD also includes a first gate line and a second gate line positioned between the first pair of pixel rows and the second pair of pixel rows, a microcavity layer including a plurality of liquid crystal injection holes, and a common electrode positioned on the microcavity layer. The LCD also includes a supporting member positioned on a common electrode and a capping layer positioned on a supporting member to cover the liquid crystal injection holes. The plurality of liquid crystal injection holes may be positioned between the first pair of pixel rows and the second pair of pixel rows.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: September 6, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong Hwan Kim, Si Kwang Kim, Ha-Young Park, Tae Woon Cha, Se Hee Han
  • Patent number: 9429796
    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: Grant
    Filed: March 6, 2014
    Date of Patent: August 30, 2016
    Assignee: 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: 20160238865
    Abstract: Disclosed are a display panel and a method of manufacturing a display panel. The display panel according to an exemplary embodiment of the present invention includes a lower substrate; an upper substrate facing the lower substrate; a sealing member interposed between the lower substrate and the upper substrate and configured to bond the lower substrate and the upper substrate; and a short pattern formed outside the sealing member from the sides of the lower substrate and the upper substrate, in which the short pattern is formed to be spaced apart at a predetermined interval or formed over the entire peripheries of the lower substrate and the upper substrate.
    Type: Application
    Filed: July 28, 2015
    Publication date: August 18, 2016
    Inventors: Seung-Yeon CHAE, Hyoung Sub LEE, Tae Woon CHA
  • Patent number: 9417474
    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: Grant
    Filed: November 29, 2012
    Date of Patent: August 16, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang Gun Choi, Woo Yong Sung, Tae Woon Cha
  • Publication number: 20160233277
    Abstract: An organic light emitting diode (OLED) display device including: a substrate; first, second and third thin film transistors sequentially laminated over the substrate; a pixel definition layer formed over the substrate and defining a pixel area; and first, second and third organic light emitting diode elements formed over the substrate, sequentially laminated in the pixel area, and respectively connected to the first, second and third thin film transistors.
    Type: Application
    Filed: October 9, 2015
    Publication date: August 11, 2016
    Inventors: Seung-Yeon CHAE, Sang Gun CHOI, Tae Woon CHA
  • Publication number: 20160216563
    Abstract: A liquid crystal display panel includes substrates opposed to each other, a liquid crystal layer interposed between the substrates, a seal line surrounding an outer peripheral portion of the liquid crystal layer and disposed between the substrates and a liquid crystal alignment layer including a polyimide, the liquid crystal alignment layer including a first region and a second region disposed in an outer peripheral portion of the first region and disposed on one surface of at least one of the substrates, wherein at least a portion of the second region is overlapped with the seal line, the second region having a surface roughness value greater than that of the first region.
    Type: Application
    Filed: September 28, 2015
    Publication date: July 28, 2016
    Inventors: Min Su KIM, Jang Hyun KIM, Joo Young YOON, Hyoung Sub LEE, Tae Woon CHA
  • Publication number: 20160216546
    Abstract: Provided is a display device including: a substrate; a plurality of thin film transistors positioned on the substrate; a plurality of pixel electrodes connected with one terminal of the thin film transistor; a plurality of partition walls formed between the plurality of pixel electrodes; a liquid crystal material positioned in a microcavity between adjacent partition walls; a common electrode positioned on the partition wall and the liquid crystal material; and a color filter layer formed on the common electrode, in which the partition wall is a photoresist.
    Type: Application
    Filed: December 11, 2015
    Publication date: July 28, 2016
    Inventors: Min Su KIM, Si Kwang KIM, Tae Woon CHA, Seung-Yeon CHAE
  • Publication number: 20160209693
    Abstract: A display device may include a substrate, a roof layer, a pixel electrode, a liquid crystal layer, and a support member. The roof layer may overlap the substrate. The pixel electrode may be positioned between the roof layer and the substrate. The liquid crystal layer may be positioned between the roof layer and the pixel electrode and may include a first liquid crystal portion and a second liquid crystal portion. The first liquid crystal portion may be smaller than the second liquid crystal portion. The support member may be positioned between the roof layer and the substrate and may be positioned between the first liquid crystal portion and the second liquid crystal portion.
    Type: Application
    Filed: October 12, 2015
    Publication date: July 21, 2016
    Inventors: Si Kwang KIM, Tae Woon CHA, Seung-Yeon CHAE
  • Publication number: 20160202511
    Abstract: A display device that allows for stable injection of an aligning material or a liquid crystal material is presented. The display device includes: a substrate; thin film transistors disposed on the substrate; pixel electrodes connected to the thin film transistors; a roof layer disposed on the pixel electrodes to be spaced apart from the pixel electrodes with a plurality of microcavities therebetween; a liquid crystal layer disposed in the microcavities; and an encapsulation layer disposed on the roof layer and sealing the microcavities, wherein the roof layer includes ceiling portions covering top surfaces of the microcavities, column portions covering sides of the microcavities, and protruding portions protruding from the column portions.
    Type: Application
    Filed: May 13, 2015
    Publication date: July 14, 2016
    Inventors: Seung Yeon CHAE, Han Su KIM, Tae Woon CHA
  • Publication number: 20160195747
    Abstract: A liquid crystal display according to exemplary embodiment of the present system and method includes: an insulating substrate; a thin film transistor positioned on the insulating substrate; a pixel electrode connected to the thin film transistor; a common electrode spaced apart from the pixel electrode while facing the pixel electrode; a liquid crystal layer injected into a microcavity between the pixel electrode and the common electrode; a roof layer formed on the common electrode; an injection hole positioned in the roof layer and the common electrode; an overcoat configured to cover the injection hole and partially overlap the roof layer; a film layer positioned on the overcoat and the roof layer; and a flattening layer positioned on the film layer.
    Type: Application
    Filed: July 8, 2015
    Publication date: July 7, 2016
    Inventors: Tae Gyun KIM, Se Hee HAN, Tae Woon CHA
  • 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: 20160161794
    Abstract: According to an exemplary embodiment of the present system and method, a display device includes: a substrate including a plurality of pixel areas and a thin film transistor region; a plurality of thin film transistors formed on the substrate; a pixel electrode formed in each of the pixel areas and connected to a corresponding thin film transistor; a color filter layer formed on the pixel electrode to be spaced apart from the pixel electrode by a microcavity disposed in between; a plurality of connection microcavities formed in the thin film transistor region and connecting microcavities in a column; and a liquid crystal material filling the microcavities and the connection microcavities.
    Type: Application
    Filed: October 29, 2015
    Publication date: June 9, 2016
    Inventors: Si Kwang KIM, Tae Woon CHA
  • Publication number: 20160152018
    Abstract: A method for manufacturing a display panel includes providing a mother substrate that includes a display area and a non-display area, and includes a first substrate, a second substrate facing the first substrate, and a sealant provided between the first substrate and the second substrate, generating a crack on the sealant through irradiation of laser onto the sealant between the first substrate and the second substrate, and cutting a part of the second substrate and a part of the sealant at a position corresponding to the crack.
    Type: Application
    Filed: April 8, 2015
    Publication date: June 2, 2016
    Inventors: Jang Hyun KIM, Min Su KIM, Tae Woon CHA
  • 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: 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
  • Patent number: 9348164
    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: Grant
    Filed: May 8, 2014
    Date of Patent: May 24, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Tae Gyun Kim, Woo Yong Sung, Tae Woon Cha
  • Patent number: 9341877
    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: Grant
    Filed: January 31, 2014
    Date of Patent: May 17, 2016
    Assignee: 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