Patents by Inventor Yong-Kuk Yun
Yong-Kuk Yun 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: 11820932Abstract: A polymerisable LC material comprising at least one di- or multireactive mesogenic compound and at least one compound of formula CO-1, wherein R1, R2, L1, L2, L3, and n have the meanings as given in claim 1. Furthermore, a method for preparation of the LC material, a polymer film with improved thermal durability obtainable from the corresponding polymerisable LC material, a method of preparation of such polymer film, and the use of such polymer film and said polymerisable LC material for optical, electro-optical, decorative or security devices.Type: GrantFiled: September 25, 2017Date of Patent: November 21, 2023Assignee: Merck Patent GmbHInventors: Dong-Mee Song, Yong-Hyun Choi, Jae-Hyun Kang, Yong-Kuk Yun
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Publication number: 20220389321Abstract: A liquid-crystal (LC) medium containing one or more dyes and one or more polymerizable compounds, its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in colour LC displays of the PSA (polymer sustained alignment) or SA (self-aligning) mode containing a quantum dot colour filter (QDCF), an LC display of the PSA or SA mode containing the LC medium and containing a QDCF, and to a process of manufacturing the LC display.Type: ApplicationFiled: May 3, 2022Publication date: December 8, 2022Applicant: Merck Patent GmbHInventors: Hyun-Woo BAE, Jung-Min LEE, Hyun-Jin YOON, Yong-Kuk YUN
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Patent number: 11466213Abstract: The invention relates to a liquid-crystalline medium having negative dielectric anisotropy comprising one or more compounds of formula I and one or more compounds selected from the group of the compounds of the formulae IIA, IIB and IIC, wherein the groups and parameters have the meanings indicated in claim 1, to a guest-host liquid crystal medium derived therefrom comprising one or more dichroic dyes and the use of said medium in devices such as light shutters, switchable windows, switchable mirrors and guest-host displays. The invention further relates to devices containing the liquid crystalline medium according to the invention.Type: GrantFiled: October 16, 2017Date of Patent: October 11, 2022Assignee: Merck Patent GmbHInventors: Jung-Min Lee, Hyun-Woo Bae, Dong-Mee Song, Yong-Kuk Yun
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Patent number: 11299673Abstract: A liquid crystal (LC) medium comprising a polymerizable compound, a process for its preparation, its use for optical, electro-optical and electronic purposes, such as LC displays, including LC displays of the polymer sustained alignment (PSA) type, and LC displays, including PSA displays, comprising the LC medium.Type: GrantFiled: August 4, 2017Date of Patent: April 12, 2022Assignee: MERCK PATENT GMBHInventors: Ji-Won Jeong, Eun-Kyu Lee, Hyun-Jin Yoon, Min-Ok Jin, Yong-Kuk Yun
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Patent number: 11236271Abstract: The present invention relates to liquid crystalline (LC) medium, to a method of its production and to the use of such LC media in polymer network liquid crystalline (PNLC) light modulation elements operated in the normally transparent mode. Furthermore, the present invention relates to such light modulation elements, as such, to the use of such light modulation elements as light shutters for transparent OLED displays, to the use of such light modulation elements in smart windows, and to a method of production of such light modulation elements according to the present invention.Type: GrantFiled: September 4, 2017Date of Patent: February 1, 2022Assignee: Merck Patent GmbHInventors: Dong-Mee Song, Hyun-Woo Bae, Jung-Min Lee, Yong-Kuk Yun
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Patent number: 11186774Abstract: The present invention relates to a liquid crystal (LC) medium comprising a polymerisable compound, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in an LC display of the polymer sustained alignment (PSA) type, and to an LC display, especially a PSA display, comprising it.Type: GrantFiled: April 29, 2016Date of Patent: November 30, 2021Assignee: MERCK PATENT GMBHInventors: Eun-Kyu Lee, Jin-Soon Park, Hyun-Jin Yoon, Min-Ok Jin, Yong-Kuk Yun
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Patent number: 10961457Abstract: The present invention relates to liquid-crystalline media comprising a) one or more compounds of the formula ST-1, as defined herein, and b) one or more compounds of the formula ST-2, as defined herein, and c) one or more compounds of the formula RV, as defined herein, and d) one or more compounds selected from formula IA and IB, as defined herein, and to liquid-crystal displays containing these media, especially to displays addressed by an active matrix and in particular to displays of the in-plane switching (IPS) or fringe-field switching (FFS) type.Type: GrantFiled: March 16, 2018Date of Patent: March 30, 2021Assignee: Merck Patent GmbHInventors: Chang-Jun Yun, Chang-Suk Choi, Yeon-Jeong Han, Heui-Seok Jin, Yong-Kuk Yun
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Patent number: 10934487Abstract: The invention relates to a liquid-crystalline medium which contains at least two polymerisable compounds or reactive mesogens (RM) and at least one compound selected from the group of compounds of the formula IIA, IIB and IIC, in which R2A, R2B, R2C, L1-6, ring B, Z2, Z2, p, q and v have the meanings indicated in Claim 1, and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS, PS-FFS, IPS or PS-IPS effect, especially for the use in LC displays of the PS (polymer stabilised) or PSA (polymer sustained alignment) type.Type: GrantFiled: February 12, 2013Date of Patent: March 2, 2021Assignee: Merck Patent GmbHInventors: Ji-Won Jeong, Yong-Kuk Yun, Dong-Mee Song, Jung-Min Lee
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Patent number: 10851301Abstract: The present invention relates to a liquid crystal (LC) medium comprising a terphenyl compound and at least two polymerizable compounds, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in an LC display of the polymer sustained alignment (PSA) type, and to an LC display, especially a PSA display, comprising it.Type: GrantFiled: November 13, 2015Date of Patent: December 1, 2020Assignee: MERCK PATENT GMBHInventors: Hyun-Jin Yoon, Ji-Won Jeong, Eun-Kyu Lee, Min-Ok Jin, Yong-Kuk Yun
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Publication number: 20200157427Abstract: The present invention relates to a liquid crystal (LC) medium comprising a terphenyl compound and at least two polymerisable compounds, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in an LC display of the polymer sustained alignment (PSA) type, and to an LC display, especially a PSA display, comprising it.Type: ApplicationFiled: January 9, 2020Publication date: May 21, 2020Applicant: MERCK PATENT GMBHInventors: Hyun-Jin YOON, Ji-Won JEONG, Eun-Kyu LEE, Min-Ok JIN, Yong-Kuk YUN
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Publication number: 20200071616Abstract: Dielectrically positive liquid-crystalline media comprising one or more compounds of each of the formulae S1 and S2, and one or more compounds selected from the group of the compounds of the formulae II and III and/or IV and/or VIII, in which the parameters have the meanings indicated in the specification, and optionally one or more further dielectrically positive compounds and optionally one or more further dielectrically neutral compounds. Also, liquid-crystal displays, especially active-matrix displays and in particular TN, IPS and FFS displays, containing these media.Type: ApplicationFiled: August 28, 2019Publication date: March 5, 2020Applicant: MERCK PATENT GMBHInventors: Chang-Suk CHOI, Chang-Jun YUN, Yeon-Jeong HAN, Hee-Kyu LEE, Yong-Kuk YUN
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Patent number: 10557083Abstract: The present invention relates to a liquid crystal (LC) medium comprising a terphenyl compound and at least two polymerisable compounds, to a process for its preparation, to its use for optical, electro-optical and electronic purposes, in particular in LC displays, especially in an LC display of the polymer sustained alignment (PSA) type, and to an LC display, especially a PSA display, comprising it.Type: GrantFiled: December 1, 2015Date of Patent: February 11, 2020Assignee: MERCK PATENT GMBHInventors: Hyun-Jin Yoon, Ji-Won Jeong, Eun-Kyu Lee, Min-Ok Jin, Yong-Kuk Yun
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Publication number: 20190316037Abstract: The invention relates to a liquid-crystalline medium having negative dielectric anisotropy comprising one or more compounds of formula I and one or more compounds selected from the group of the compounds of the formulae IIA, IIB and IIC, wherein the groups and parameters have the meanings indicated in claim 1, to a guest-host liquid crystal medium derived therefrom comprising one or more dichroic dyes and the use of said medium in devices such as light shutters, switchable windows, switchable mirrors and guest-host displays. The invention further relates to devices containing the liquid crystalline medium according to the invention.Type: ApplicationFiled: October 16, 2017Publication date: October 17, 2019Applicant: Merck Patent GmbHInventors: Jung-Min LEE, Hyun-Woo BAE, Dong-Mee SONG, Yong-Kuk YUN
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Publication number: 20190284474Abstract: The present invention relates to a switching layer based on a liquid-crystalline mixture for use in an optical switching element. The invention also encompasses a switching element comprising the switching layer and a window element containing the switching element. The liquid crystalline mixture comprises a low-molecular liquid crystal component, a polymer component and a self-alignment additive for vertical alignment.Type: ApplicationFiled: July 17, 2017Publication date: September 19, 2019Applicant: Merck Patent GmbHInventors: Dong-Mee SONG, Jung-Min LEE, Yong-Hyun CHOI, Yong-Kuk YUN
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Patent number: 10358601Abstract: The present invention relates to liquid crystalline (LC) medium, to a method of its production and to the use of such LC media in polymer network liquid crystalline (PNLC) light modulation elements operated in the reverse mode. Furthermore, the present invention relates to such light modulation elements, as such, to the use of such light modulation elements as light shutters for transparent OLED displays, and to a method of production of such light modulation elements according to the present invention.Type: GrantFiled: March 1, 2017Date of Patent: July 23, 2019Assignee: Merck Patent GmbHInventors: Hyun-Woo Bae, Dong-Mee Song, Hoo-Yong Lee, Jung-Min Lee, Yong-Kuk Yun
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Publication number: 20190218459Abstract: The invention relates to a polymerisable LC material comprising at least one di- or multireactive mesogenic compound and at least one compound of formula CO-1, wherein R1, R2, L1, L2, L3, and n have one of the meanings as given in claim 1. Furthermore, the present invention relates also to a method for its preparation, a polymer film with improved thermal durability obtainable from the corresponding polymerisable LC material, to a method of preparation of such polymer film, and to the use of such polymer film and said polymerisable LC material for optical, electro-optical, decorative or security devices.Type: ApplicationFiled: September 25, 2017Publication date: July 18, 2019Applicant: Merck Patent GmbHInventors: Dong-Mee SONG, Yong-Hyun CHOI, Jae-Hyun KANG, Yong-Kuk YUN
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Publication number: 20190185746Abstract: The present invention relates to liquid crystalline (LC) medium, to a method of its production and to the use of such LC media in polymer network liquid crystalline (PNLC) light modulation elements operated in the normally transparent mode. Furthermore, the present invention relates to such light modulation elements, as such, to the use of such light modulation elements as light shutters for transparent OLED displays, to the use of such light modulation elements in smart windows, and to a method of production of such light modulation elements according to the present invention.Type: ApplicationFiled: September 4, 2017Publication date: June 20, 2019Applicant: Merck Patent GmbHInventors: Dong-Mee SONG, Hyun-Woo BAE, Jung-Min LEE, Yong-Kuk YUN
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Publication number: 20190177618Abstract: The present invention relates to a liquid crystalline medium which comprises one or more mesogenic compounds selected from the group of compounds of formulae I and II as set forth in claim 1, one or more chiral compounds and one or more polymerisable compounds, to a composite system obtained from or respectively obtainable from the medium by polymerising the one or more polymerisable compounds, and to liquid crystal displays comprising the composite system, in particular displays operating in reflective mode. The present invention further relates to a process for preparing the composite system comprising spatially selective polymerisation.Type: ApplicationFiled: August 22, 2017Publication date: June 13, 2019Applicant: Merck Patent GmbHInventors: Dong-Mee SONG, Yong-Hyun CHOI, Jae-Hyun KANG, Yong-Kuk YUN
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Patent number: 10106742Abstract: The invention relates to a polymer film comprising a polymerized liquid crystal (LC) material with improved adhesion to a substrate, to methods for preparing such a polymer film, to a polymerizable LC material used for the preparation of such a polymer film, and to the use of the polymer film and said polymerizable LC material for optical, electrooptical, decorative or security uses and devices.Type: GrantFiled: July 31, 2014Date of Patent: October 23, 2018Assignee: MERCK PATENT GMBHInventors: Hyun-Jin Yoon, Yong-Kuk Yun, Heui-Seok Jin, Yong-Hyun Choi
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Publication number: 20180265785Abstract: The present invention relates to liquid-crystalline media comprising a) one or more compounds of the formula ST-1, as defined herein, and b) one or more compounds of the formula ST-2, as defined herein, and c) one or more compounds of the formula RV, as defined herein, and d) one or more compounds selected from formula IA and IB, as defined herein, and to liquid-crystal displays containing these media, especially to displays addressed by an active matrix and in particular to displays of the in-plane switching (IPS) or fringe-field switching (FFS) type.Type: ApplicationFiled: March 16, 2018Publication date: September 20, 2018Applicant: Merck Patent GmbHInventors: Chang-Jun YUN, Chang-Suk CHOI, Yeon-Jeong HAN, Heui-Seok JIN, Yong-Kuk YUN