Patents by Inventor HEUNG-SHIK PARK
HEUNG-SHIK PARK 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).
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Patent number: 11708531Abstract: 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: GrantFiled: January 18, 2021Date of Patent: July 25, 2023Assignee: Samsung Display Co., Ltd.Inventors: Heung Shik Park, Kyeong Jong Kim, Ho Kil Oh, Jae Soo Jang
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Patent number: 11479721Abstract: A liquid crystal composition includes the following compounds: (in a range of 21.5 to 26.5 parts by weight) a compound represented by a first chemical formula, (in a range of 2.5 to 7.5 parts by weight) a compound represented by a second chemical formula, (in a range of 12.5 to 17.5 parts by weight) a compound represented by a third chemical formula, (in a range of 5.5 to 10.5 parts by weight) a compound represented by a fourth chemical formula, (in a range of 7.5 to 12.5 parts by weight) a compound represented by a fifth chemical formula, (in a range of 2 to 7 parts by weight) a compound represented by a sixth chemical formula, (in a range of 10.5 to 15.5 parts by weight) a compound represented by a seventh chemical formula, and (in a range of 13 to 18 parts by weight) an compound represented by an eighth chemical formula 8.Type: GrantFiled: September 10, 2020Date of Patent: October 25, 2022Inventors: Kyung Min Kim, Sung Jae Yun, Kang Seob Jeong, Jin Suek Kim, Heung Shik Park
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Publication number: 20210261863Abstract: A liquid crystal composition includes the following compounds: (in a range of 21.5 to 26.5 parts by weight) a compound represented by a first chemical formula, (in a range of 2.5 to 7.5 parts by weight) a compound represented by a second chemical formula, (in a range of 12.5 to 17.5 parts by weight) a compound represented by a third chemical formula, (in a range of 5.5 to 10.5 parts by weight) a compound represented by a fourth chemical formula, (in a range of 7.5 to 12.5 parts by weight) a compound represented by a fifth chemical formula, (in a range of 2 to 7 parts by weight) a compound represented by a sixth chemical formula, (in a range of 10.5 to 15.5 parts by weight) a compound represented by a seventh chemical formula, and (in a range of 13 to 18 parts by weight) an compound represented by an eighth chemical formula 8.Type: ApplicationFiled: September 10, 2020Publication date: August 26, 2021Inventors: Kyung Min KIM, Sung Jae YUN, Kang Seob JEONG, Jin Suek KIM, Heung Shik PARK
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Publication number: 20210230482Abstract: 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: ApplicationFiled: January 18, 2021Publication date: July 29, 2021Inventors: Heung Shik Park, Kyeong Jong Kim, Ho Kil Oh, Jae Soo Jang
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Patent number: 10788714Abstract: A liquid crystal display includes a first substrate, pixel electrodes disposed on the first substrate and including a first sub-pixel electrode and a second sub-pixel electrode separated from each other and positioned in one pixel area, gate lines connected to the pixel electrodes, data lines connected to the pixel electrodes, reference voltage lines connected to the second sub-pixel electrode of the pixel electrodes, a second substrate facing the first substrate, a common electrode disposed on the second substrate, and a liquid crystal layer positioned between the first substrate and the second substrate and including liquid crystal molecules, a first initial pretilt angle of the liquid crystal molecules corresponding to the first sub-pixel electrode for the second substrate surface is larger than a second initial pretilt angle of the liquid crystal molecules corresponding to the second sub-pixel electrode for the second substrate surface.Type: GrantFiled: July 29, 2019Date of Patent: September 29, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Heung Shik Park, Jae Hoon Jung, Dan Bi Yang, Min-Joo Han, Ji Phyo Hong, Ki Chul Shin
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Patent number: 10754199Abstract: A liquid crystal composition, a liquid crystal display (LCD) device using the liquid crystal composition, and a method of manufacturing an LCD device are provided. The liquid crystal display device comprises: a first substrate; a liquid crystal layer disposed on the first substrate, the liquid crystal layer including a liquid crystal compound; and a first liquid crystal alignment layer disposed between the first substrate and the liquid crystal layer, wherein the first compound includes a first compound, which has at least one hydrophilic group bonded to one end of a core structure thereof and a benzoyl derivative moiety bonded to the other end of the core structure thereof.Type: GrantFiled: April 24, 2018Date of Patent: August 25, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Heung Shik Park, Kyeong Jong Kim, Ki Chul Shin
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Patent number: 10732466Abstract: 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: GrantFiled: December 4, 2017Date of Patent: August 4, 2020Assignee: Samsung Display Co., Ltd.Inventors: Heung Shik Park, Ho Kil Oh, Jae Soo Jang, Ki Chul Shin
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Patent number: 10678095Abstract: A display device includes: a display panel including an insulating substrate, a first electrode disposed on the insulating substrate, and a second electrode disposed on the insulating substrate and disposed to be insulated from the first electrode; a liquid crystal layer disposed on the display panel; and an alignment-inducing layer disposed between the display panel and the liquid crystal layer, wherein the alignment-inducing layer includes a compound having a structure represented by Chemical Formula 1-A: In Chemical Formula 1-A above, R1 is a hydrophilic group, R2 is a hydrogen atom, and A is an alkylene group of 1 to 20 carbon atoms, an alkyleneoxy group of 1 to 20 carbon atoms, or a single bond.Type: GrantFiled: February 22, 2017Date of Patent: June 9, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Heung Shik Park, Shin Woong Kang, Ki Chul Shin, Myong Hoon Lee
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Publication number: 20200103710Abstract: 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: ApplicationFiled: May 20, 2019Publication date: April 2, 2020Inventors: Heung Shik PARK, Kyeong Jong KIM, Ki Chul SHIN, Ho Kil OH, Jae-Soo JANG
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Patent number: 10578931Abstract: A liquid-crystal display device includes: a substrate; and an insulation film disposed on the substrate and which includes a flat portion and a projection pattern unit protruding from the flat portion in a direction perpendicular to the flat portion; and a pixel electrode disposed on the substrate. The pixel electrode includes a first stem electrode and a second stem electrode extending along a first direction and disposed to be spaced apart from the first stem in a second direction perpendicular to the first direction, and a plurality of branch electrode extending from the first stem electrode and the second stem electrode, and the projection pattern unit includes a first projection pattern extending along the first direction and partially overlapping the first stem electrode, and a second projection pattern extending along the first direction and partially overlapping the second stem electrode.Type: GrantFiled: May 26, 2017Date of Patent: March 3, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: IsraelEsteban Lazo, Heung Shik Park, Ki Chul Shin
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Patent number: 10551680Abstract: 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: GrantFiled: April 13, 2017Date of Patent: February 4, 2020Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Heung Shik Park, Jae Soo Jang, Kyeong Jong Kim, Ho Kil Oh, Ki Chul Shin
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Publication number: 20190346721Abstract: A liquid crystal display includes a first substrate, pixel electrodes disposed on the first substrate and including a first sub-pixel electrode and a second sub-pixel electrode separated from each other and positioned in one pixel area, gate lines connected to the pixel electrodes, data lines connected to the pixel electrodes, reference voltage lines connected to the second sub-pixel electrode of the pixel electrodes, a second substrate facing the first substrate, a common electrode disposed on the second substrate, and a liquid crystal layer positioned between the first substrate and the second substrate and including liquid crystal molecules, a first initial pretilt angle of the liquid crystal molecules corresponding to the first sub-pixel electrode for the second substrate surface is larger than a second initial pretilt angle of the liquid crystal molecules corresponding to the second sub-pixel electrode for the second substrate surface.Type: ApplicationFiled: July 29, 2019Publication date: November 14, 2019Inventors: Heung Shik PARK, Jae Hoon JUNG, Dan Bi YANG, Min-Joo HAN, Ji Phyo HONG, Ki Chul SHIN
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Publication number: 20190258119Abstract: A liquid crystal display includes a display panel, an opposite display panel, a liquid crystal layer between the display panel and the opposite display panel. The display panel includes a first base substrate, a pretilt alignment stabilization layer including a polymer of a reactive mesogen, a first vertical alignment layer including a decomposition product of a polymerization initiator between the first base substrate and the pretilt alignment stabilization layer, and a pattern electrode between the first base substrate and the first vertical alignment layer. The opposite display panel includes a second base substrate, a patternless electrode on the second base substrate, and a second vertical alignment layer on the patternless electrode, which includes the decomposition product of the polymerization initiator. The liquid crystal layer includes a liquid crystal composition having negative dielectric anisotropy. A surface of the LCD that faces a viewer has a concave shaped curve.Type: ApplicationFiled: April 30, 2019Publication date: August 22, 2019Inventors: Heung Shik PARK, Sang Gyun KIM, Hyun Ku AHN, Ki Chul SHIN
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Publication number: 20190212618Abstract: A liquid crystal display (LCD) includes a substrate, an overcoat layer disposed on the substrate, and a pixel electrode disposed on the overcoat layer. The pixel electrode includes a stem electrode and a plurality of branch electrodes. The stem electrode extends in a first direction and in a second direction crossing the first direction to have a cross shape, and the plurality of branch electrodes extends from the stem electrode obliquely to the first direction and the second direction. The overcoat layer includes a base layer and a plurality of ridge patterns which protrude from a surface of the base layer. The plurality of ridge patterns extends in a different direction from the direction in which the plurality of branch electrodes extends.Type: ApplicationFiled: March 19, 2019Publication date: July 11, 2019Inventors: ISRAEL ESTEBAN LAZO, Heung Shik PARK, Ki Chul SHIN
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Publication number: 20190179189Abstract: A liquid crystal display including: a display panel including an upper panel, a lower panel, and a liquid crystal layer disposed therebetween; and a backlight unit configured to provide light to the display panel. The upper panel includes a color conversion layer and an upper polarizer that respectively include semiconductor nanocrystals, the lower panel includes at least one of a B-plate compensation layer and an A-plate compensation layer, and a lower polarizer, the upper polarizer is disposed at a lower portion of the color conversion layer, and at least one of the upper panel and the lower panel includes a negative type of C-plate compensation layer.Type: ApplicationFiled: December 3, 2018Publication date: June 13, 2019Inventors: Heung Shik PARK, Ki Chul Shin, Ho Kil Oh, Israel Esteban Lazo Martinez, Jae-Soo Jang
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Publication number: 20190179185Abstract: A display device according to an exemplary embodiment includes: a thin film transistor array panel including a first pixel electrode connected to a first thin film transistor a second pixel electrode adjacent to the first pixel electrode and connected to a second thin film transistor; and a color conversion display panel overlapping the thin film transistor array panel, wherein the color conversion display panel includes a color conversion layer including a semiconductor nanocrystal and a transmissive layer, the thin film transistor array panel includes a first shielding electrode positioned between the first pixel electrode and the second pixel electrode and a second shielding electrode positioned adjacent to the first pixel electrode and separated from the first shielding electrode, and different voltages are applied to the first shielding electrode and the second shielding electrode.Type: ApplicationFiled: August 8, 2018Publication date: June 13, 2019Inventors: Ho Kil OH, Kyung Min KIM, Kyeong Jong KIM, Heung Shik PARK, Ki Chul SHIN, Dong-Chul SHIN, Jae-Soo JANG
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Patent number: 10317746Abstract: A liquid crystal display device includes a pixel electrode having a stem electrode in a first direction and a plurality of branch electrode extending from the stem electrode. An angle between the stem electrode and each of the branch electrode increases as the branch electrodes approach a center of the stem electrode and the angle decreases as the branch electrodes approach an end of the stem electrode.Type: GrantFiled: April 10, 2017Date of Patent: June 11, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Israel Esteban Lazo, Heung Shik Park, Ki Chul Shin
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Patent number: 10276721Abstract: A liquid crystal display includes a first gate line, a first data line, and a first pixel. The first pixel includes: a first subpixel including a first thin film transistor connected to the first gate line and data line, and a first liquid crystal capacitor, wherein a first terminal of the first liquid crystal capacitor is electrically connected to the first thin film transistor and a second terminal of the first liquid crystal capacitor is configured to receive a common voltage; and a second subpixel including a second thin film transistor connected to the first gate line and data line, a second liquid crystal capacitor, wherein a first terminal of the second liquid crystal capacitor is configured to receive the common voltage, and a thin film transistor resistor electrically connected between the second thin film transistor and a second terminal of the second liquid crystal capacitor.Type: GrantFiled: June 29, 2015Date of Patent: April 30, 2019Assignee: Samsung Display Co., Ltd.Inventors: Jae Hoon Jung, Heung Shik Park, Ki Chul Shin, Dan Bi Yang, Min-Joo Han, Ji Phyo Hong
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Publication number: 20190121205Abstract: A liquid crystal display including a liquid crystal panel including: a gate line and a data line disposed on a first substrate; a transistor connected to the gate line and the data line; a pixel electrode connected to the transistor; a second substrate facing the first substrate; red and green color conversion layers and a transmission layer disposed on one surface of the second substrate; a common electrode disposed on one surface of the red and green color conversion layers and the transmission layer; and a liquid crystal layer including liquid crystal molecules disposed between the first and second substrates. The data line is disposed adjacent to one edge of the pixel electrode, and an arrangement of liquid crystal molecules disposed at a part corresponding to the data line is the same as an arrangement of liquid crystal molecules of a part corresponding to the pixel electrode.Type: ApplicationFiled: April 9, 2018Publication date: April 25, 2019Inventors: Israel Esteban Lazo Martinez, Kyeong Jong Kim, Heung Shik Park, Ki Chul Shin
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Publication number: 20190121178Abstract: A liquid crystal composition, a liquid crystal display (LCD) device using the liquid crystal composition, and a method of manufacturing an LCD device are provided. The liquid crystal display device comprises: a first substrate; a liquid crystal layer disposed on the first substrate, the liquid crystal layer including a liquid crystal compound; and a first liquid crystal alignment layer disposed between the first substrate and the liquid crystal layer, wherein the first compound includes a first compound, which has at least one hydrophilic group bonded to one end of a core structure thereof and a benzoyl derivative moiety bonded to the other end of the core structure thereof.Type: ApplicationFiled: April 24, 2018Publication date: April 25, 2019Inventors: Heung Shik PARK, Kyeong Jong KIM, Ki Chul SHIN