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: 10261367Abstract: 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: GrantFiled: March 22, 2017Date of Patent: April 16, 2019Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Israel Esteban Lazo, Heung Shik Park, Ki Chul Shin
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Publication number: 20190049761Abstract: 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: ApplicationFiled: December 4, 2017Publication date: February 14, 2019Inventors: Heung Shik PARK, Ho Kil OH, Jae Soo JANG, Ki Chul SHIN
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Patent number: 10203565Abstract: Liquid crystal display includes a first substrate which includes a pixel electrode disposed in each pixel, a second substrate which faces the first substrate and includes a common electrode and an insulating layer, and a liquid crystal layer which is disposed between the first substrate and the second substrate, where the common electrode includes a first common electrode which is disposed on the whole surface defining the second substrate and a second common electrode which is disposed on the first common electrode with the insulating layer interposed therebetween and includes an opening defined in each pixel, and each pixel includes a first region in which the pixel electrode and the first common electrode face each other through the opening and a second region in which the pixel electrode and the second common electrode face each other.Type: GrantFiled: March 3, 2016Date of Patent: February 12, 2019Assignee: SAMSUNG DISPLAY CO., LTDInventors: Kyeong Jong Kim, Hoon Kim, Heung Shik Park, Ki Chul Shin
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Patent number: 10031389Abstract: A liquid crystal display includes: a substrate; a gate line, a data line, a first storage electrode line, and a second storage electrode line positioned on the substrate; a first thin film transistor, a second thin film transistor, and a third thin film transistor connected to the gate line and the data line; a fourth thin film transistor connected to the gate line, the third thin film transistor, and the second storage electrode line; a first subpixel electrode connected to the first thin film transistor; a second subpixel electrode connected to the second thin film transistor; a third subpixel electrode connected to the third thin film transistor; and a storage electrode connected to the first storage electrode line and overlapping the first subpixel electrode. Different voltages are applied to the three subpixels to improve lateral visibility of the liquid crystal display.Type: GrantFiled: September 9, 2015Date of Patent: July 24, 2018Assignee: Samsung Display Co. Ltd.Inventors: Jae Hoon Jung, Hoon Kim, Heung Shik Park, Ki Chul Shin, Ji Phyo Hong
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Patent number: 10018875Abstract: A curved liquid crystal display comprises, a first curved substrate; a second curved substrate facing the first curved substrate; a liquid crystal layer disposed between the first curved substrate and the second curved substrate; a first curved liquid crystal alignment layer disposed between the liquid crystal layer and the first curved substrate and containing a light stabilizer; and a second curved liquid crystal alignment layer disposed between the liquid crystal layer and the second curved substrate.Type: GrantFiled: January 20, 2016Date of Patent: July 10, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Ji Hong Bae, Heung Shik Park, Keun Chan Oh
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Patent number: 9989815Abstract: A liquid crystal display device includes an insulating substrate, a data line disposed on the insulating substrate and extended in a first direction, a plurality of pixel electrodes which is disposed on the insulating substrate and in which a slit pattern is defined, a common electrode facing the pixel electrodes, and a liquid crystal layer interposed between the pixel electrodes and the common electrode, where each of the pixel electrodes includes an edge electrode portion and a plurality of branch electrode portions protruding in a direction toward a central portion of the pixel electrode from the edge electrode portion, and at least a portion of the edge electrode portion overlaps the data line.Type: GrantFiled: January 25, 2016Date of Patent: June 5, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sang Gyun Kim, Heung Shik Park, Kyung Min Kim, Hoon Kim, Ki Chul Shin
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Publication number: 20180101072Abstract: 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: ApplicationFiled: May 26, 2017Publication date: April 12, 2018Inventors: IsraelEsteban LAZO, Heung Shik PARK, Ki Chul SHIN
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Patent number: 9921423Abstract: A liquid crystal display according to an exemplary embodiment of the present system and method includes: a first substrate; a thin film transistor disposed on the first substrate; a passivation layer disposed on the thin film transistor and including a first portion and a second portion thicker than the first portion; a first sub-pixel electrode and a second sub-pixel electrode disposed on the passivation layer, spaced apart from each other, and positioned on one pixel region; a second substrate facing the first substrate; and a liquid crystal layer positioned between the first substrate and the second substrate, wherein the first sub-pixel electrode is disposed on the second portion of the passivation layer, and the second sub-pixel electrode is disposed on the first portion of the passivation layer.Type: GrantFiled: July 21, 2015Date of Patent: March 20, 2018Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Sung-Jae Yun, Heung Shik Park, Oh Jeong Kwon, Ki Chul Shin
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Publication number: 20180059487Abstract: 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: ApplicationFiled: February 22, 2017Publication date: March 1, 2018Inventors: Heung Shik PARK, Shin Woong KANG, Ki Chul SHIN, Myong Hoon LEE
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Publication number: 20180046038Abstract: 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: ApplicationFiled: April 10, 2017Publication date: February 15, 2018Inventors: Israel Esteban LAZO, Heung Shik PARK, Ki Chul SHIN
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Patent number: 9885920Abstract: Disclosed is a liquid crystal display including: a first substrate; a second substrate facing the first substrate; a liquid crystal layer provided between the first substrate and the second substrate; and an alignment layer disposed at at least one of between the first substrate and the liquid crystal layer and between the second substrate and the liquid crystal layer, wherein the alignment layer includes a first region that is hydrophilic and a second region that is hydrophobic are periodically repeated in a direction that is parallel to the first substrate or the second substrate, and the liquid crystal layer includes liquid crystal molecules having a helical structure and a self-aligned liquid crystal additive to form a uniform lying helix (ULH) structure.Type: GrantFiled: August 11, 2015Date of Patent: February 6, 2018Assignee: Samsung Display Co., Ltd.Inventors: Heung Shik Park, Ki Chul Shin
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Patent number: 9869906Abstract: A liquid crystal display device includes pixels, each including a pixel electrode including first and second stem electrodes, which extend in a first direction and are spaced apart from each other, a third stem electrode, which extends in a second direction perpendicular to the first direction and intersects the first and second stem electrodes, a first edge electrode, which extends in the second direction and intersects first ends of the first and second stem electrodes, a second edge electrode, which extends in the second direction and intersects second ends of the first and second stem electrodes, and branch electrodes, which extend from the first, second, and third stem electrodes in a direction which is different from the first and second directions where a boundary line is defined between the first and second stem electrode.Type: GrantFiled: November 17, 2016Date of Patent: January 16, 2018Assignee: SAMSUNG DISPLAY CO. LTD.Inventors: Heung Shik Park, Sang Gyun Kim, Ki Chul Shin, Jae Jin Lyu
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Publication number: 20170343860Abstract: 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: ApplicationFiled: April 13, 2017Publication date: November 30, 2017Inventors: Heung Shik PARK, Jae Soo JANG, Kyeong Jong KIM, Ho Kil OH, Ki Chul SHIN
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Patent number: 9799684Abstract: A liquid crystal display includes a first substrate, a gate line and a data line disposed on the first substrate, a first thin film transistor and a second thin film transistor connected to the gate line and the data line, a first subpixel electrode connected to the first thin film transistor, a resistor connected to the second thin film transistor and a resistance of the resistor is changed by a pulsed gate-on signal applied to the gate line, and a second subpixel electrode connected to the resistor.Type: GrantFiled: September 18, 2015Date of Patent: October 24, 2017Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Jae Hoon Jung, Dan Bi Yang, Min-Joo Han, Ji Phyo Hong, Heung Shik Park, Ki Chul Shin
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Publication number: 20170293187Abstract: 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 22, 2017Publication date: October 12, 2017Inventors: Israel Esteban LAZO, Heung Shik PARK, Ki Chul SHIN
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Publication number: 20170293185Abstract: A liquid crystal display device includes pixels, each including a pixel electrode including first and second stem electrodes, which extend in a first direction and are spaced apart from each other, a third stem electrode, which extends in a second direction perpendicular to the first direction and intersects the first and second stem electrodes, a first edge electrode, which extends in the second direction and intersects first ends of the first and second stem electrodes, a second edge electrode, which extends in the second direction and intersects second ends of the first and second stem electrodes, and branch electrodes, which extend from the first, second, and third stem electrodes in a direction which is different from the first and second directions where a boundary line is defined between the first and second stem electrode.Type: ApplicationFiled: November 17, 2016Publication date: October 12, 2017Inventors: Heung Shik PARK, Sang Gyun KIM, Ki Chul SHIN, Jae Jin LYU
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Patent number: 9759959Abstract: A liquid crystal display including a first substrate, a pixel electrode on the first substrate and including a first subpixel electrode and a second subpixel electrode separated from each other and located in one pixel area, 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, wherein a first voltage applied to the first subpixel electrode is higher than a second voltage applied to the second subpixel electrode, wherein the first subpixel electrode includes first branch electrodes, the second subpixel electrode includes second branch electrodes, the second subpixel electrode is located around the pixel area to enclose the first subpixel electrode, wherein the first branch electrodes and the second branch electrodes face each other in a boundary portion of the first subpixel electrode and the second subpixel electrode.Type: GrantFiled: March 6, 2015Date of Patent: September 12, 2017Assignee: Samsung Display Co., Ltd.Inventors: Dong-Chul Shin, Oh Jeong Kwon, Heung Shik Park, Sung-Jae Yun, Su Jin Kim, Jae Hong Park, Ki Chul Shin, Joo Young Yoon, Hyeok Jin Lee
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Publication number: 20170184922Abstract: 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: June 17, 2016Publication date: June 29, 2017Inventors: Heung Shik PARK, Sang Gyun KIM, Hyun Ku AHN, Ki Chul SHIN
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Publication number: 20170097546Abstract: A liquid crystal display device includes a first data line in a first direction a first gate line in a second direction, and a first pixel part connected to the first gate and data lines. The first pixel part includes a first sub-pixel part including a first sub-pixel electrode overlapping a first common electrode, and a second sub-pixel part including a second sub-pixel electrode overlapping a second common electrode. The first sub-pixel part includes a first switching element connected to the first data line and the first sub-pixel electrode, the second sub-pixel part includes a second switching element connected to the data line and the second sub-pixel electrode, and a level of a voltage applied to the first common electrode is different from a level of a voltage applied to the second common electrode.Type: ApplicationFiled: May 4, 2016Publication date: April 6, 2017Inventors: Israel Esteban LAZO MARTINEZ, Heung Shik PARK, Ki Chul SHIN
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Publication number: 20170059947Abstract: A liquid crystal display device includes an insulating substrate, a data line disposed on the insulating substrate and extended in a first direction, a plurality of pixel electrodes which is disposed on the insulating substrate and in which a slit pattern is defined, a common electrode facing the pixel electrodes, and a liquid crystal layer interposed between the pixel electrodes and the common electrode, where each of the pixel electrodes includes an edge electrode portion and a plurality of branch electrode portions protruding in a direction toward a central portion of the pixel electrode from the edge electrode portion, and at least a portion of the edge electrode portion overlaps the data line.Type: ApplicationFiled: January 25, 2016Publication date: March 2, 2017Inventors: Sang Gyun KIM, Heung Shik PARK, Kyung Min KIM, Hoon KIM, Ki Chul SHIN