Patents by Inventor Gak-Seok Lee

Gak-Seok Lee 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: 10473982
    Abstract: A liquid crystal display including a first substrate, a second substrate disposed opposite the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The liquid crystal layer includes a liquid crystal composition. The liquid crystal composition includes at least one of liquid crystal compounds including a cyclopentadienyl group.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: November 12, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sun Young Kwon, Tae Hoon Kim, Ji Hong Bae, Jong Ho Son, Keun Chan Oh, Gak Seok Lee, Chang Hun Lee, Ji Eun Jang
  • Publication number: 20190326545
    Abstract: An organic light emitting display device includes: a first substrate; a plurality of pixels on the first substrate, each of the pixels including a corresponding portion of an organic light emitting layer on the first substrate; an encapsulation film on the organic light emitting layer; a protruding pattern layer on the encapsulation film and comprising a plurality of spacers at a boundary between adjacent ones of the pixels; an adhesive layer on the protruding pattern layer; and a second substrate on the adhesive layer.
    Type: Application
    Filed: February 14, 2019
    Publication date: October 24, 2019
    Inventors: Sun Kyu JOO, Byung Chul KIM, In Ok KIM, Keun Chan OH, Chang Soon JANG, In Seok SONG, Gak Seok LEE
  • Publication number: 20190280061
    Abstract: A display device includes a substrate, a thin film transistor on the substrate, an interlayer insulating layer on the thin film transistor, an electrode on the interlayer insulating layer, the electrode including an emission region, a contact region overlapping the thin film transistor, and a dummy region protruding from the emission region in a direction different from the contact region, and an emission layer on the electrode, the emission region of the electrode overlapping the emission layer.
    Type: Application
    Filed: December 11, 2018
    Publication date: September 12, 2019
    Inventors: Sun-Kyu JOO, In Seok SONG, Keun Chan OH, Byung-Chul KIM, In Ok KIM, Gak Seok LEE, Chang-Soon JANG
  • Patent number: 10386680
    Abstract: A liquid crystal display device includes: a first curved substrate; a second curved substrate facing the first curved substrate; a liquid crystal layer interposed between the first curved substrate and the second curved substrate; a first curved liquid crystal alignment layer interposed between the liquid crystal layer and the first curved substrate; and a second curved liquid crystal alignment layer interposed between the liquid crystal layer and the second curved substrate, wherein the second curved liquid crystal alignment layer includes a nanoparticles including a hydrophobic group and a hydrophilic group.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: August 20, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Gak Seok Lee, Tae Hoon Kim, Seung Yeon Jeong
  • Patent number: 10274786
    Abstract: A liquid crystal display device comprises: a first substrate; an organic layer disposed on the first substrate; a pixel electrode disposed on the organic layer; a plurality of slits defined in the pixel electrode and configured to exposed a surface of the organic layer; a liquid crystal alignment film disposed on a surface of the pixel electrode and on the surface of the organic layer exposed by the plurality of slits; and a plurality of liquid crystal molecules disposed on the liquid crystal alignment film, wherein the liquid crystal alignment film includes a first region overlapping the plurality of slits and a second region overlapping the pixel electrode, wherein the second region has a surface energy different from a surface energy of the first region.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: April 30, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong Ho Son, Sun Young Kwon, Tae Hoon Kim, Kyung Hae Park, Joon Hyung Park, Ji Hong Bae, Gak Seok Lee, Jin Hyeong Lee, Chang Hun Lee, Ji Eun Jang, Hye Lim Jang
  • Patent number: 10119074
    Abstract: A liquid crystal composition includes a compound having a structure represented by formula A-1: wherein RA1 is an alkyl group, an alkoxy group, a cyano group, a halogen atom, or a hydrogen atom, RA2 is an alkyl group, a cyano group, a halogen atom, or a hydrogen atom, ZA is *—O—*, *—COO—*, *—OCO—*, *—CF2O—*, *—OCF2—*, *—CH2O—*, *—OCH2—*, *—SCH2—*, *—CH2S—*, *—C2F4—*, *—CH2CF2—*, *—CF2CH2—*, *—(CH2)k—*, *—CH?CH—*, *—CF?CF—*, *—CH?CF—*, *—CF?CH—*, *—C?C—*, *—CH?CHCH2O—*, or a single bond, X is a halogen atom, each of l1 and l2 is independently an integer of 0 to 2, and when l1 is 2 and ZA in a repeating unit defined by l1 are the same or different, wherein k is an integer of 1 to 5 and “*” indicates a point of attachment.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: November 6, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ji Eun Jang, Sun Young Kwon, Tae Hoon Kim, Jong Ho Son, Keun Chan Oh, Won Gap Yoon, Gak Seok Lee, Jin Hyeong Lee, Chang Hun Lee
  • Publication number: 20180086981
    Abstract: A liquid crystal composition includes a compound having a structure represented by formula A-1: wherein RA1 is an alkyl group, an alkoxy group, a cyano group, a halogen atom, or a hydrogen atom, RA2 is an alkyl group, a cyano group, a halogen atom, or a hydrogen atom, ZA is *—O—*, *—COO—*, *—OCO—*, *—CF2O—*, *—OCF2—*, *—CH2O—*, *—OCH2—*, *—SCH2—*, *—CH2S—*, *—C2F4—*, *—CH2CF2—*, *—CF2CH2—*, *—(CH2)k—*, *—CH?CH—*, *—CF?CF—*, *—CH?CF—*, *—CF?CH—*, *—C?C—*, *—CH?CHCH2O—*, or a single bond, X is a halogen atom, each of l1 and l2 is independently an integer of 0 to 2, and when l1 is 2 and ZA in a repeating unit defined by l1 are the same or different, wherein k is an integer of 1 to 5 and “*” indicates a point of attachment.
    Type: Application
    Filed: February 1, 2017
    Publication date: March 29, 2018
    Inventors: Ji Eun JANG, Sun Young KWON, Tae Hoon KIM, Jong Ho SON, Keun Chan OH, Won Gap YOON, Gak Seok LEE, Jin Hyeong LEE, Chang Hun LEE
  • Publication number: 20180046032
    Abstract: A liquid crystal display including a first substrate, a second substrate disposed opposite the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The liquid crystal layer includes a liquid crystal composition. The liquid crystal composition includes at least one of liquid crystal compounds including a cyclopentadienyl group.
    Type: Application
    Filed: April 14, 2017
    Publication date: February 15, 2018
    Inventors: SUN YOUNG KWON, Tae Hoon Kim, Ji Hong Bae, Jong Ho Son, Keun Chan Oh, Gak Seok Lee, Chang Hun Lee, Ji Eun Jang
  • Publication number: 20170357130
    Abstract: A liquid crystal display device comprises: a first substrate; an organic layer disposed on the first substrate; a pixel electrode disposed on the organic layer; a plurality of slits defined in the pixel electrode and configured to exposed a surface of the organic layer; a liquid crystal alignment film disposed on a surface of the pixel electrode and on the surface of the organic layer exposed by the plurality of slits; and a plurality of liquid crystal molecules disposed on the liquid crystal alignment film, wherein the liquid crystal alignment film includes a first region overlapping the plurality of slits and a second region overlapping the pixel electrode, wherein the second region has a surface energy different from a surface energy of the first region.
    Type: Application
    Filed: April 11, 2017
    Publication date: December 14, 2017
    Inventors: Jong Ho SON, Sun Young KWON, Tae Hoon KIM, Kyung Hae PARK, Joon Hyung PARK, Ji Hong BAE, Gak Seok LEE, Jin Hyeong LEE, Chang Hun LEE, Ji Eun JANG, Hye Lim JANG
  • Patent number: 9835916
    Abstract: An exemplary embodiment of the present invention provides a liquid crystal display, including: a first substrate including a first pixel electrode, the first pixel electrode having a planar shape; a second substrate disposed facing the first substrate, including a common electrode disposed on the second substrate; a liquid crystal layer including a plurality of liquid crystal molecules disposed between the first substrate and the second substrate; and a plurality of pixels disposed between the first substrate and the second substrate, each of the plurality of pixels including a plurality of domains, and liquid crystal molecules of the liquid crystal layer disposed in different domains have different pretilt directions.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: December 5, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young Min Kim, Jae Byung Park, Gak Seok Lee, Seung-Hwan Cho
  • Patent number: 9759965
    Abstract: A liquid crystal device includes: a display area comprising pixels; a peripheral area disposed at an edge of the display area; a common voltage application wiring configured to transfer a common voltage; and a data voltage application wiring configured to transfer a data voltage. A ratio of a width of the common voltage application wiring and a width of the data voltage application wiring is in a range of 2:1 to 1:1.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: September 12, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gak Seok Lee, Byoung-Hun Sung, Duck Jong Suh
  • Patent number: 9726947
    Abstract: A liquid crystal display device includes a first display substrate, a second display substrate, a liquid crystal layer, and a sealant. The sealant is disposed between the first display substrate and the second display substrate to seal the liquid crystal layer. The sealant includes a first sealant that contacts the liquid crystal layer and a second sealant across the first sealant from the liquid crystal layer. The first sealant has a cure rate greater than that of the second sealant, and may prevent moisture and impurities from entering the liquid crystal layer.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: August 8, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byoung-Hun Sung, Gak Seok Lee, Duckjong Suh
  • Publication number: 20170212388
    Abstract: A liquid crystal display device includes: a first curved substrate; a second curved substrate facing the first curved substrate; a liquid crystal layer interposed between the first curved substrate and the second curved substrate; a first curved liquid crystal alignment layer interposed between the liquid crystal layer and the first curved substrate; and a second curved liquid crystal alignment layer interposed between the liquid crystal layer and the second curved substrate, wherein the second curved liquid crystal alignment layer includes a nanoparticles including a hydrophobic group and a hydrophilic group
    Type: Application
    Filed: July 26, 2016
    Publication date: July 27, 2017
    Inventors: Gak Seok LEE, Tae Hoon KIM, Seung Yeon JEONG
  • Patent number: 9570023
    Abstract: A display panel including a plurality of pixels. A first pixel among the plurality of pixels includes a first subpixel, which further includes a first subpixel electrode, a first switching element configured to apply a data voltage to the first subpixel electrode, and a second switching element applying a boosting voltage to the first subpixel electrode. The first pixel further includes a second subpixel including a second subpixel electrode and a third switching element applying the data voltage to the low pixel electrode. Accordingly, display quality and reliability of the display panel may be improved.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: February 14, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youn-Hak Jeong, Gak-Seok Lee
  • Patent number: 9568780
    Abstract: A liquid crystal display includes: first and second display panels facing each other; and a liquid crystal layer between the first display panel and the second display panel and including an alignment assisting agent. The first display panel includes: a first substrate; a first gate line and a second gate line on the first substrate and spaced apart from each other; a data line crossing the first gate line and the second gate line; a shielding electrode on the data line and insulated from the data line; a first electrode electrically connected with the first gate line and the data line; a passivation layer on the first electrode; and a second electrode on the passivation layer and electrically connected with the second gate line and the shielding electrode. The second display panel includes a third electrode on a second substrate. The second electrode includes a branch portion.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: February 14, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Gak Seok Lee, Hyeon Gu Cho
  • Patent number: 9563080
    Abstract: A display device according to the exemplary embodiment of the present invention includes: a first insulation substrate; a pixel electrode disposed on the first insulation substrate; a first alignment layer disposed on the pixel electrode; a second insulation substrate facing the first insulation substrate; a common electrode disposed on the second insulation substrate; and a liquid crystal layer disposed between the first and second insulation substrates. The liquid crystal layer includes liquid crystal molecules and nanoparticles, and the nanoparticles are disposed adjacent to the common electrode.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: February 7, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jang Wi Ryu, Gak Seok Lee
  • Publication number: 20160274419
    Abstract: A liquid crystal display device including a first substrate, a first alignment layer provided on the first substrate, a second substrate facing the first substrate, a second alignment layer provided on the second substrate, and a liquid crystal layer provided between the first substrate and the second substrate and including liquid crystal molecules is provided. Each of the first alignment layer and the second alignment layer includes a base alignment layer, and an alignment forming layer provided on the base alignment layer, and the alignment forming layer comprises a derivative of a heat stabilizer and an alignment material comprising first functional group which is polymerized to initially align the liquid crystal molecules.
    Type: Application
    Filed: June 1, 2016
    Publication date: September 22, 2016
    Inventors: GAK SEOK LEE, Duckjong SUH, Hyunku AHN, Kyoungtae KIM, TAEKJOON LEE, Seungyeon JEONG
  • Patent number: 9423654
    Abstract: A liquid crystal display may include a first substrate, a second substrate facing the first substrate, a liquid crystal layer comprising liquid crystal molecules that are interposed between the first substrate and the second substrate, a first electrode disposed on the first substrate, an insulating layer disposed on the first electrode, a second electrode disposed on the insulating layer, a third electrode disposed on the second substrate, and an alignment layer disposed on any one of the second electrode and the third electrode. The second electrode comprises a fine slit structure, and at least one of the liquid crystal layer and the alignment layer comprises a sub-alignment substance.
    Type: Grant
    Filed: January 2, 2015
    Date of Patent: August 23, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gak-Seok Lee, Ki Chul Shin, Youn Hak Jeong, Hee Hwan Lee, Joo Seok Yeom
  • Publication number: 20160203781
    Abstract: A display panel including a plurality of pixels. A first pixel among the plurality of pixels includes a first subpixel, which further includes a first subpixel electrode, a first switching element configured to apply a data voltage to the first subpixel electrode, and a second switching element applying a boosting voltage to the first subpixel electrode. The first pixel further includes a second subpixel including a second subpixel electrode and a third switching element applying the data voltage to the low pixel electrode. Accordingly, display quality and reliability of the display panel may be improved.
    Type: Application
    Filed: March 22, 2016
    Publication date: July 14, 2016
    Inventors: Youn-Hak JEONG, Gak-Seok Lee
  • Publication number: 20160195776
    Abstract: A liquid crystal display device includes a first substrate, a pixel electrode formed on the first substrate, a second substrate facing the first substrate, a common electrode formed on the second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The pixel electrode includes a first subpixel electrode and a second subpixel electrode disposed in a pixel area and spaced apart from each other, and the second subpixel electrode is disposed at four corners of the pixel area. A first voltage is applied to the first subpixel electrode and a second voltage is applied to the second subpixel electrode, and the first voltage is different from the second voltage.
    Type: Application
    Filed: October 28, 2015
    Publication date: July 7, 2016
    Inventors: Gak Seok LEE, Seung Yeon JEONG, Hyo Ju JUNG