Patents by Inventor Ho-Kil Oh

Ho-Kil Oh 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: 11973072
    Abstract: A display device includes: a base layer including a display area including an emission area and a non-emission area adjacent to the emission area, and a non-display area around the display area; a light emitting element in the emission area on the base layer; a color filter layer located above the light emitting element; and a light blocking pattern on the light emitting element and including a first light blocking pattern in the non-emission area and a second light blocking pattern in the non-display area. The first light blocking pattern and the second light blocking pattern are different in thickness from each other.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: April 30, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Eung Gyu Lee, Jin Suek Kim, Sae Ron Park, Seung Bo Shim, Ho Kil Oh, Jae Soo Jang
  • Patent number: 11708531
    Abstract: A liquid crystal composition for a display device, the composition includes compounds of Chemical Formulae 1-7 with the amounts and compounds defined herein.
    Type: Grant
    Filed: January 18, 2021
    Date of Patent: July 25, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Heung Shik Park, Kyeong Jong Kim, Ho Kil Oh, Jae Soo Jang
  • Publication number: 20220158043
    Abstract: Disclosed are a display panel including a light emitting panel, and a color conversion panel facing the light emitting panel, wherein the color conversion panel being converts an emission spectrum of light emitted from the light emitting panel, wherein the color conversion panel may include a color conversion layer including a plurality of regions including a color conversion region, and bank defining each region of the color conversion layer, the color conversion region may include quantum dots, and a refractive index of the bank is lower than a refractive index of the quantum dots, and an electronic device including the same.
    Type: Application
    Filed: August 16, 2021
    Publication date: May 19, 2022
    Inventors: Eung Gyu LEE, Jin Suek KIM, Seung Bo SHIM, Ho Kil OH, Bo Bae LEE
  • Publication number: 20220085264
    Abstract: A display device includes: a first substrate; a plurality of metal layers on the first substrate and separated from each other; a buffer layer on the metal layer; a semiconductor layer on the buffer layer; a gate conductive layer on the semiconductor layer; a data conductive layer connected to the semiconductor layer; and a light-emitting element connected to the data conductive layer, wherein the metal layer includes a first portion partially overlapping the semiconductor layer in a third direction perpendicular to the surface of the first substrate, a second portion where the metal layer completely overlaps the semiconductor layer in the third direction, and a third portion where the metal layer does not overlap the semiconductor layer in the third direction.
    Type: Application
    Filed: September 14, 2021
    Publication date: March 17, 2022
    Inventors: Seung Bo SHIM, Chang Woo KWON, Bong-Kyun KIM, Jin SueK KIM, Hyo Suk PARK, Ho Kil OH, Eung Gyu LEE, Wan-Soon IM, Joon Hoo CHOI
  • Publication number: 20220084999
    Abstract: A display device includes: a base layer including a display area including an emission area and a non-emission area adjacent to the emission area, and a non-display area around the display area; a light emitting element in the emission area on the base layer; a color filter layer located above the light emitting element; and a light blocking pattern on the light emitting element and including a first light blocking pattern in the non-emission area and a second light blocking pattern in the non-display area. The first light blocking pattern and the second light blocking pattern are different in thickness from each other.
    Type: Application
    Filed: June 24, 2021
    Publication date: March 17, 2022
    Inventors: Eung Gyu LEE, Jin Suek KIM, Sae Ron PARK, Seung Bo SHIM, Ho Kil OH, Jae Soo JANG
  • Publication number: 20220059611
    Abstract: A tiled display device includes a first display device including a first pixel, and a second display device coupled to the first display device in a bonding area, including a second pixel, and overlapping the first display device in the bonding area in a plane view.
    Type: Application
    Filed: July 27, 2021
    Publication date: February 24, 2022
    Inventors: Ho Kil Oh, Jin Suek KIM, Sae Ron Park, Seung Bo Shim, Eung Gyu Lee, Jae Soo Jang
  • Patent number: 11119366
    Abstract: A liquid crystal display device includes a first substrate, a pixel electrode which is disposed on the first substrate and comprises a first sub-pixel electrode and a second sub-pixel electrode adjacent to the first sub-pixel electrode along a first direction, and a shielding electrode which is disposed on the same layer as the pixel electrode and comprises a first area having a first width and a second area having a second width which is smaller than the first width along a second direction which crosses the first direction, and the first sub-pixel electrode may be adjacent to the first area along the second direction, and the second sub-pixel electrode may be adjacent to the second area along the second direction.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: September 14, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ho Kil Oh, Hoon Kim, Ki Chul Shin
  • Publication number: 20210230482
    Abstract: A liquid crystal composition for a display device, the composition includes compounds of Chemical Formulae 1-7 with the amounts and compounds defined herein.
    Type: Application
    Filed: January 18, 2021
    Publication date: July 29, 2021
    Inventors: Heung Shik Park, Kyeong Jong Kim, Ho Kil Oh, Jae Soo Jang
  • Patent number: 10809579
    Abstract: A liquid crystal display includes: a first substrate; a pixel electrode on the first substrate and including a first subpixel electrode and a second subpixel electrode which are separated from each other; a second substrate facing the first substrate; a common electrode on the second substrate; and a liquid crystal layer between the first substrate and the second substrate, in which the first subpixel electrode includes a first plate-shaped portion and a plurality of first branch electrodes extended from the first plate-shaped portion, the second subpixel electrode includes a second plate-shaped portion surrounds the first branch electrodes and a plurality of second branch electrodes extended from the second plate-shaped portion, and a difference between a first voltage applied to the first subpixel electrode and a common voltage applied to the common electrode is larger than a difference between a second voltage applied to the second subpixel electrode and the common voltage.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: October 20, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hak Sun Chang, Cheol Shin, Jae-Soo Jang, Ki Chul Shin, Jang Wi Ryu, Ho Kil Oh, Ka Eun Kim, Se Hyun Lee, Hyo Ju Jung
  • Publication number: 20200326598
    Abstract: A liquid crystal display device includes a first substrate, a pixel electrode which is disposed on the first substrate and comprises a first sub-pixel electrode and a second sub-pixel electrode adjacent to the first sub-pixel electrode along a first direction, and a shielding electrode which is disposed on the same layer as the pixel electrode and comprises a first area having a first width and a second area having a second width which is smaller than the first width along a second direction which crosses the first direction, and the first sub-pixel electrode may be adjacent to the first area along the second direction, and the second sub-pixel electrode may be adjacent to the second area along the second direction.
    Type: Application
    Filed: June 25, 2020
    Publication date: October 15, 2020
    Inventors: Ho Kil OH, Hoon KIM, Ki Chul SHIN
  • Patent number: 10732468
    Abstract: A liquid crystal display device includes a first substrate, a pixel electrode which is disposed on the first substrate and comprises a first sub-pixel electrode and a second sub-pixel electrode adjacent to the first sub-pixel electrode along a first direction, and a shielding electrode which is disposed on the same layer as the pixel electrode and comprises a first area having a first width and a second area having a second width which is smaller than the first width along a second direction which crosses the first direction, and the first sub-pixel electrode may be adjacent to the first area along the second direction, and the second sub-pixel electrode may be adjacent to the second area along the second direction.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: August 4, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ho Kil Oh, Hoon Kim, Ki Chul Shin
  • Patent number: 10732466
    Abstract: A liquid-crystal display device includes: a first substrate comprising a plurality of pixels; a pixel electrode disposed on the first substrate in each of the pixels; a second substrate including a surface facing the first substrate; a wavelength conversion layer and a transmissive layer disposed on the surface of the second substrate facing the first substrate; and a liquid-crystal layer disposed between the pixel electrode and the wavelength conversion layer and between the pixel electrode and the transmissive layer, wherein the pixel electrode includes a stem electrode and a plurality of branch electrodes extending from the stem electrode, and wherein all of the plurality of branch electrodes extending from the stem electrode extend in a same direction.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: August 4, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Heung Shik Park, Ho Kil Oh, Jae Soo Jang, Ki Chul Shin
  • Publication number: 20200103710
    Abstract: A display panel includes a liquid crystal layer, a negative-type C plate compensation layer, and a B plate compensation layer or an A plate compensation layer, and retardation values provided by the liquid crystal layer and the compensation layers are set to allow light perpendicular to a lateral transmittance angle, which is an angle formed by a transmissive axis of the upper polarizer with respect to a transmissive axis of the lower polarizer when viewed from a specific position on a lateral side, to be transmitted to the upper polarizer when the display panel displays a black color.
    Type: Application
    Filed: May 20, 2019
    Publication date: April 2, 2020
    Inventors: Heung Shik PARK, Kyeong Jong KIM, Ki Chul SHIN, Ho Kil OH, Jae-Soo JANG
  • Patent number: 10551680
    Abstract: A liquid crystal display device includes a first substrate, and a first pixel which is disposed on the first substrate, and includes a pixel area and a circuit area adjacent to the pixel area where the first pixel further includes a first pixel electrode in which a slit extending in a first direction is defined, a first sub-pixel electrode disposed on one side of the slit, and a second sub-pixel electrode disposed on another side of the slit, the slit, the first sub-pixel electrode and the second sub-pixel electrode are disposed in the pixel area, and the first sub-pixel electrode and the second sub-pixel electrode are directly connected to each other in the circuit area.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: February 4, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Heung Shik Park, Jae Soo Jang, Kyeong Jong Kim, Ho Kil Oh, Ki Chul Shin
  • Patent number: 10520781
    Abstract: The present invention relates to a liquid crystal display including: a lower electrode including a unit pixel electrode; an upper electrode including an upper unit electrode facing the unit pixel electrode; and a liquid crystal layer between the lower electrode and the upper electrode and including a plurality of liquid crystal molecules aligned approximately perpendicular to the surfaces of the lower electrode and the upper electrode in the absence of an electric field, wherein the unit pixel electrode includes a stem forming a boundary between a plurality of sub-regions and a plurality of minute branches extending in different directions in two different sub-regions, the upper unit electrode includes an opening facing the stem and extending parallel to the stem, any alignment aid to pretilt the liquid crystal molecules is absent, and a length of the minute branches is equal to or less than about 53 ?m.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: December 31, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jang Wi Ryu, Cheol Shin, Hak Sun Chang, Ki Chul Shin, Jae-Soo Jang, Ka Eun Kim, Ho Kil Oh, Se Hyun Lee, Hyo Ju Jung, Sang Hyeon Song, Sang Jin Jeon
  • Patent number: 10466541
    Abstract: A display device including a first substrate, a pixel unit disposed on the first substrate and including a first sub-pixel electrode, a second sub-pixel electrode and a third sub-pixel electrode, the first through third sub-pixel electrodes being adjacent to one another, a second substrate facing the first substrate, a first wavelength conversion layer disposed on a surface of the second substrate facing the first substrate, and overlapping the first sub-pixel electrode, a second wavelength conversion layer disposed on the surface of the second substrate facing the first substrate, and overlapping the second sub-pixel electrode, a transmissive layer disposed on the surface of the second substrate facing the first substrate, and overlapping the third sub-pixel electrode, a first cholesteric liquid crystal layer disposed on a surface of the first wavelength conversion layer facing the first substrate, a second cholesteric liquid crystal layer disposed on a surface of the second wavelength conversion layer facin
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: November 5, 2019
    Assignee: Samsung Display Co., Ltd
    Inventors: Ki Chul Shin, Ho Kil Oh
  • Patent number: 10423043
    Abstract: The present invention relates to a liquid crystal display including: a lower electrode including a unit pixel electrode; an upper electrode including an upper unit electrode facing the unit pixel electrode; and a liquid crystal layer between the lower electrode and the upper electrode and including a plurality of liquid crystal molecules aligned approximately perpendicular to the surfaces of the lower electrode and the upper electrode in the absence of an electric field, wherein the unit pixel electrode includes a stem forming a boundary between a plurality of sub-regions and a plurality of minute branches extending in different directions in two different sub-regions, the upper unit electrode includes an opening facing the stem and extending parallel to the stem, any alignment aid to pretilt the liquid crystal molecules is absent, and a length of the minute branches is equal to or less than about 53 ?m.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: September 24, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jang Wi Ryu, Cheol Shin, Hak Sun Chang, Ki Chul Shin, Jae-Soo Jang, Ka Eun Kim, Ho Kil Oh, Se Hyun Lee, Hyo Ju Jung, Sang Hyeon Song, Sang Jin Jeon
  • Publication number: 20190278142
    Abstract: A liquid crystal display device includes a first substrate, a pixel electrode which is disposed on the first substrate and comprises a first sub-pixel electrode and a second sub-pixel electrode adjacent to the first sub-pixel electrode along a first direction, and a shielding electrode which is disposed on the same layer as the pixel electrode and comprises a first area having a first width and a second area having a second width which is smaller than the first width along a second direction which crosses the first direction, and the first sub-pixel electrode may be adjacent to the first area along the second direction, and the second sub-pixel electrode may be adjacent to the second area along the second direction.
    Type: Application
    Filed: May 20, 2019
    Publication date: September 12, 2019
    Inventors: Ho Kil OH, Hoon KIM, Ki Chul SHIN
  • Publication number: 20190227355
    Abstract: The present invention relates to a liquid crystal display including: a lower electrode including a unit pixel electrode; an upper electrode including an upper unit electrode facing the unit pixel electrode; and a liquid crystal layer between the lower electrode and the upper electrode and including a plurality of liquid crystal molecules aligned approximately perpendicular to the surfaces of the lower electrode and the upper electrode in the absence of an electric field, wherein the unit pixel electrode includes a stem forming a boundary between a plurality of sub-regions and a plurality of minute branches extending in different directions in two different sub-regions, the upper unit electrode includes an opening facing the stem and extending parallel to the stem, any alignment aid to pretilt the liquid crystal molecules is absent, and a length of the minute branches is equal to or less than about 53 ?m.
    Type: Application
    Filed: April 3, 2019
    Publication date: July 25, 2019
    Inventors: Jang Wi RYU, Cheol SHIN, Hak Sun CHANG, Ki Chul SHIN, Jae-Soo JANG, Ka Eun KIM, Ho Kil OH, Se Hyun LEE, Hyo Ju JUNG, Sang Hyeon SONG, Sang Jin JEON
  • Patent number: 10330990
    Abstract: A liquid crystal display device includes a first substrate, a pixel electrode which is disposed on the first substrate and comprises a first sub-pixel electrode and a second sub-pixel electrode adjacent to the first sub-pixel electrode along a first direction, and a shielding electrode which is disposed on the same layer as the pixel electrode and comprises a first area having a first width and a second area having a second width which is smaller than the first width along a second direction which crosses the first direction, and the first sub-pixel electrode may be adjacent to the first area along the second direction, and the second sub-pixel electrode may be adjacent to the second area along the second direction.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: June 25, 2019
    Assignee: SAMSUNG DISPLAY CO. LTD.
    Inventors: Ho Kil Oh, Hoon Kim, Ki Chul Shin