Patents by Inventor Hak-Sun Chang
Hak-Sun Chang 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: 12243877Abstract: A display device and a method of fabricating a display device are provided. A display device includes: a first electrode and a second electrode on a substrate and spaced apart from each other; a third electrode on the substrate; and a first light emitting element between the first electrode and the second electrode. The first electrode, the second electrode, and the third electrode may be arranged on a same layer. The third electrode may be electrically separated from the first electrode and the second electrode.Type: GrantFiled: January 18, 2022Date of Patent: March 4, 2025Assignee: Samsung Display Co., Ltd.Inventors: Se Hyun Lee, Dong Woo Kim, Min Gyeong Shin, Hak Sun Chang
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Publication number: 20250035987Abstract: A liquid crystal display device includes a substrate, and a pixel electrode disposed on the substrate, the pixel electrode including a first stem portion that extends in a first direction, a second stem portion that extends in a second direction crossing the first direction and intersecting with the first stem portion, a plurality of branch portions, the branch portions extending to the first direction and the second direction from the first stem portion or the second stem portion, a first connection portion that connects distal ends of some of the branch electrodes to each other, extends in the first direction and intersects with the second stem portion, and a first edge electrode that is connected to one distal end of the second stem portion and extends in the first direction.Type: ApplicationFiled: October 16, 2024Publication date: January 30, 2025Applicant: Samsung Display Co. Ltd.Inventors: Se Hyun LEE, Hak Sun CHANG, Cheol SHIN
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Patent number: 12176460Abstract: A pixel includes a first conductive pattern, a second conductive pattern, and a third conductive pattern that are spaced apart from each other; a first electrode at least partially overlapping and directly contacting the first conductive pattern; a second electrode adjacent to the first electrode; a third electrode on the third conductive pattern and directly contacting the third conductive pattern, and a fourth electrode at least partially overlapping, and directly contacting the second conductive pattern; a first pixel electrode and a second pixel electrode that are on at least one of the first, second, third, and fourth electrodes; and light emitting elements electrically connected to the first and second pixel electrodes. The first conductive pattern, the first electrode, and the first pixel electrode are electrically connected to each other. The third conductive pattern, the third electrode, and the second pixel electrode are electrically connected to each other.Type: GrantFiled: November 9, 2021Date of Patent: December 24, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Min Gyeong Shin, Dong Woo Kim, Se Hyun Lee, Hak Sun Chang
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Patent number: 12130520Abstract: A liquid crystal display device includes a substrate, and a pixel electrode disposed on the substrate, the pixel electrode including a first stem portion that extends in a first direction, a second stem portion that extends in a second direction crossing the first direction and intersecting with the first stem portion, a plurality of branch portions, the branch portions extending to the first direction and the second direction from the first stem portion or the second stem portion, a first connection portion that connects distal ends of some of the branch electrodes to each other, extends in the first direction and intersects with the second stem portion, and a first edge electrode that is connected to one distal end of the second stem portion and extends in the first direction.Type: GrantFiled: August 8, 2022Date of Patent: October 29, 2024Assignee: SAMSUNG DISPLAY CO. LTD.Inventors: Se Hyun Lee, Hak Sun Chang, Cheol Shin
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Publication number: 20230108716Abstract: A pixel may include a first line component, a second line component, a third line component, and a fourth line component that are spaced apart from each other on a substrate and extend in a direction, a conductive pattern disposed on the first and the second line components, a passivation layer disposed on the conductive pattern, a first electrode disposed on the passivation layer and directly contacting the conductive pattern, a second electrode disposed adjacent to the first electrode and spaced apart from the first electrode, and a third electrode disposed adjacent to the second electrode, and spaced apart from the second electrode, and electrically connected to the third line component, a first pixel electrode and a second pixel electrode that are disposed on the first to the third electrodes and spaced apart from each other, and light emitting elements electrically connected to the first and the second pixel electrodes.Type: ApplicationFiled: July 11, 2022Publication date: April 6, 2023Applicant: Samsung Display Co., LTD.Inventors: Min Gyeong SHIN, Dong Woo KIM, Se Hyun LEE, Hak Sun CHANG
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Patent number: 11579502Abstract: The present disclosure relates to a display device. A display device according to an embodiment of the present inventive concept includes gate lines extending along a first direction, data lines extending along a second direction, pixels including pixel electrodes, each of the pixels including a transistor connected to a gate line and a data line, and a pixel electrode connected to the transistor, the pixels including a first pixel which includes a first pixel electrode connected to a first data line and is disposed in nth pixel row and mth pixel column, and a second pixel which includes a second pixel electrode connected to the first data line or a second data line disposed adjacent to the first data line and is disposed in (n+1)th pixel row and the mth pixel column. The first data line does not overlap the first pixel electrode and overlaps the second pixel electrode.Type: GrantFiled: May 11, 2020Date of Patent: February 14, 2023Inventors: Se Hyun Lee, Hae Chan Park, Min Gyeong Shin, Hye Won Jang, Hak Sun Chang
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Publication number: 20230012528Abstract: A display device includes a first electrode and a second electrode disposed on a substrate, at least one light emitting element including a first semiconductor layer including a semiconductor of a first type, a second semiconductor layer including a semiconductor of a second type different from the first type, and an active layer disposed between the first semiconductor layer and the second semiconductor layer, and a third electrode disposed on the substrate and electrically connected to the second electrode. At least a portion of the third electrode is disposed between the first electrode and the second electrode in a plan view.Type: ApplicationFiled: March 23, 2022Publication date: January 19, 2023Applicant: Samsung Display Co., LTD.Inventors: Se Hyun LEE, Dong Woo KIM, Min Gyeong SHIN, Hak Sun CHANG
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Publication number: 20220392922Abstract: A display device and a method of fabricating a display device are provided. A display device includes: a first electrode and a second electrode on a substrate and spaced apart from each other; a third electrode on the substrate; and a first light emitting element between the first electrode and the second electrode. The first electrode, the second electrode, and the third electrode may be arranged on a same layer. The third electrode may be electrically separated from the first electrode and the second electrode.Type: ApplicationFiled: January 18, 2022Publication date: December 8, 2022Inventors: Se Hyun LEE, Dong Woo KIM, Min Gyeong SHIN, Hak Sun CHANG
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Publication number: 20220382093Abstract: A liquid crystal display device includes a substrate, and a pixel electrode disposed on the substrate, the pixel electrode including a first stem portion that extends in a first direction, a second stem portion that extends in a second direction crossing the first direction and intersecting with the first stem portion, a plurality of branch portions, the branch portions extending to the first direction and the second direction from the first stem portion or the second stem portion, a first connection portion that connects distal ends of some of the branch electrodes to each other, extends in the first direction and intersects with the second stem portion, and a first edge electrode that is connected to one distal end of the second stem portion and extends in the first direction.Type: ApplicationFiled: August 8, 2022Publication date: December 1, 2022Applicant: Samsung Display Co. Ltd.Inventors: Se Hyun LEE, Hak Sun CHANG, Cheol SHIN
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Publication number: 20220336707Abstract: A pixel includes a first conductive pattern, a second conductive pattern, and a third conductive pattern that are spaced apart from each other; a first electrode at least partially overlapping and directly contacting the first conductive pattern; a second electrode adjacent to the first electrode; a third electrode on the third conductive pattern and directly contacting the third conductive pattern, and a fourth electrode at least partially overlapping, and directly contacting the second conductive pattern; a first pixel electrode and a second pixel electrode that are on at least one of the first, second, third, and fourth electrodes; and light emitting elements electrically connected to the first and second pixel electrodes. The first conductive pattern, the first electrode, and the first pixel electrode are electrically connected to each other. The third conductive pattern, the third electrode, and the second pixel electrode are electrically connected to each other.Type: ApplicationFiled: November 9, 2021Publication date: October 20, 2022Applicant: Samsung Display Co., LTD.Inventors: Min Gyeong SHIN, Dong Woo KIM, Se Hyun LEE, Hak Sun CHANG
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Patent number: 11435622Abstract: A liquid crystal display device includes a substrate, and a pixel electrode disposed on the substrate, the pixel electrode including a first stem portion that extends in a first direction, a second stem portion that extends in a second direction crossing the first direction and intersecting with the first stem portion, a plurality of branch portions, the branch portions extending to the first direction and the second direction from the first stem portion or the second stem portion, a first connection portion that connects distal ends of some of the branch electrodes to each other, extends in the first direction and intersects with the second stem portion, and a first edge electrode that is connected to one distal end of the second stem portion and extends in the first direction.Type: GrantFiled: July 13, 2021Date of Patent: September 6, 2022Assignee: SAMSUNG DISPLAY CO. LTD.Inventors: Se Hyun Lee, Hak Sun Chang, Cheol Shin
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Publication number: 20210341796Abstract: A liquid crystal display device includes a substrate, and a pixel electrode disposed on the substrate, the pixel electrode including a first stem portion that extends in a first direction, a second stem portion that extends in a second direction crossing the first direction and intersecting with the first stem portion, a plurality of branch portions, the branch portions extending to the first direction and the second direction from the first stem portion or the second stem portion, a first connection portion that connects distal ends of some of the branch electrodes to each other, extends in the first direction and intersects with the second stem portion, and a first edge electrode that is connected to one distal end of the second stem portion and extends in the first direction.Type: ApplicationFiled: July 13, 2021Publication date: November 4, 2021Applicant: Samsung Display Co. Ltd.Inventors: Se Hyun LEE, Hak Sun CHANG, Cheol SHIN
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Patent number: 11092854Abstract: A liquid crystal display device includes a substrate, and a pixel electrode disposed on the substrate, the pixel electrode including a first stem portion that extends in a first direction, a second stem portion that extends in a second direction crossing the first direction and intersecting with the first stem portion, a plurality of branch portions, the branch portions extending to the first direction and the second direction from the first stem portion or the second stem portion, a first connection portion that connects distal ends of some of the branch electrodes to each other, extends in the first direction and intersects with the second stem portion, and a first edge electrode that is connected to one distal end of the second stem portion and extends in the first direction.Type: GrantFiled: June 11, 2020Date of Patent: August 17, 2021Assignee: SAMSUNG DISPLAY CO. LTD.Inventors: Se Hyun Lee, Hak Sun Chang, Cheol Shin
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Patent number: 11009753Abstract: A display device includes a substrate, a first wiring and a second wiring positioned on the substrate, a thin film transistor (“TFT”) connected to the first wiring and the second wiring, and a pixel electrode connected to the TFT and including a transverse branch part, a longitudinal branch part, minute branches extending from the transverse branch part and the longitudinal branch part, and an outer branch part connecting end parts of the minute branches and adjacent to the storage electrode line, where a shortest distance from a center part of at least one side of the outer branch part to at least one side of the first wiring is different from a shortest distance from an edge part of at least one side of the outer branch part to at least one side of the first wiring.Type: GrantFiled: December 5, 2019Date of Patent: May 18, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Cheol Shin, Hak Sun Chang, Se Hyun Lee, Seung Min Lee
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Patent number: 10996522Abstract: A liquid crystal display including a partial plate electrode along with a minute pattern in a pixel electrode thereby increasing the viewing angle and the lateral visibility of the liquid crystal display, as well as the response speed A step provider is provided to reinforce the control force of the liquid crystal molecules, thereby reducing the texture generated in the center of the pixel.Type: GrantFiled: December 19, 2019Date of Patent: May 4, 2021Assignee: Samsung Display Co., Ltd.Inventors: Hak Sun Chang, Eun-Kil Park, Hyun-Ho Kang, Jang Wi Ryu, Seung-Suk Yang, Ki Chul Shin, Se Hyun Lee, Jae-Soo Jang, Hyo Ju Jung
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Publication number: 20210109413Abstract: The present disclosure relates to a display device. A display device according to an embodiment of the present inventive concept includes gate lines extending along a first direction, data lines extending along a second direction, pixels including pixel electrodes, each of the pixels including a transistor connected to a gate line and a data line, and a pixel electrode connected to the transistor, the pixels including a first pixel which includes a first pixel electrode connected to a first data line and is disposed in nth pixel row and mth pixel column, and a second pixel which includes a second pixel electrode connected to the first data line or a second data line disposed adjacent to the first data line and is disposed in (n+1)th pixel row and the mth pixel column. The first data line does not overlap the first pixel electrode and overlaps the second pixel electrode.Type: ApplicationFiled: May 11, 2020Publication date: April 15, 2021Inventors: Se Hyun LEE, Hae Chan PARK, Min Gyeong SHIN, Hye Won JANG, Hak Sun CHANG
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Publication number: 20200380930Abstract: A liquid crystal display according to an exemplary embodiment of the present inventive concept includes: a plurality of pixels including a plurality of pixel electrodes formed on a first substrate and including first domain division means, and a common electrode formed on a second substrate that faces the first substrate and including second domain division means; a gate driver and a data driver connected to the plurality of pixels; and a compensation controller connected to the data driver, the compensation controller transmits compensation voltages to the data driver, wherein, when viewed on the same plane, distances between the first domain division means and the second domain division means are changed according to a location of the plurality of pixels, and wherein the compensation voltages are changed corresponding to the distances between the first domain division means and the second domain division means.Type: ApplicationFiled: August 20, 2020Publication date: December 3, 2020Inventors: Hak Sun CHANG, Cheol SHIN, Ki Chul SHIN
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Patent number: 10838267Abstract: A liquid crystal display, including a first substrate; a gate line and a data line disposed on the first substrate; and a pixel electrode connected to the gate line and the data line and comprising a first sub pixel electrode and a second sub pixel electrode disposed on the first substrate. Each of the first sub pixel electrode and the second sub pixel electrode includes a transverse stem; a longitudinal stem; and a plurality of minute branches extending from transverse stem and the longitudinal stem. A width of the first sub pixel electrode is different from a width of the second sub pixel electrode.Type: GrantFiled: November 21, 2019Date of Patent: November 17, 2020Assignee: Samsung Display Co., Ltd.Inventors: Hak Sun Chang, Jang Wi Ryu, Ki Chul Shin, Jae-Soo Jang
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Publication number: 20200348572Abstract: A liquid crystal display includes: a plurality of pixel electrodes; and a first data line and a second data line, each of the first data line and the second data line configured to transmit a data voltage and having substantially straight and angled portions. The first data line and the second data line are adjacent to each other in a first direction. The plurality of pixel electrodes includes: a first pixel electrode that overlaps both the first data line and the second data line; and a second pixel electrode disposed adjacent to the first pixel electrode in a second direction that intersects the first direction without overlapping the first data line and the second data line.Type: ApplicationFiled: March 9, 2020Publication date: November 5, 2020Inventors: Se Hyun LEE, Hae Chan PARK, Min Gyeong SHIN, Hui Gyeong YUN, Seung Min LEE, Hak Sun CHANG
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Publication number: 20200348553Abstract: A liquid crystal display includes: a first display panel including a transistor; a second display panel disposed facing the first display panel, the second display panel including: a light blocking member overlapping the transistor, the light blocking member including: a first portion having a first thickness; and a second portion having a second thickness; and a liquid crystal layer disposed between the first display panel and the second display panel, wherein the second thickness is thinner than the first thickness.Type: ApplicationFiled: February 13, 2020Publication date: November 5, 2020Inventors: Won Jun LEE, You Sik SHIN, Youn Hak JEONG, Hak Sun CHANG, Jin Joo HA