Patents by Inventor Chang-Suk CHOI
Chang-Suk CHOI 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: 11802243Abstract: A liquid-crystal (LC) media having a negative dielectric anisotropy containing a compound of formula I and the use of the LC media for optical, electro-optical and electronic purposes, in particular in energy-efficient LC displays, especially in IPS, FFS, VA or PS-VA displays.Type: GrantFiled: February 23, 2022Date of Patent: October 31, 2023Assignee: Merck Patent GmbHInventors: Jing Wang, Ping Zhao, Chang-Suk Choi
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Patent number: 11739267Abstract: LC media and LC displays containing an LC medium with positive dielectric anisotropy, which contains one or more compounds of formula I in a concentration of >0 and ?10% and displays addressed by an active matrix and in particular displays of the IPS, PS-IPS, FFS, PS-FFS, HB-FFS, U-IPS, TN, PS-TN, STN or TN-TFT mode.Type: GrantFiled: June 26, 2020Date of Patent: August 29, 2023Assignee: MERCK PATENT GMBHInventors: Yeon-Jeong Han, Dong-Hyun Kim, Heui-Seok Jin, Chang-Suk Choi
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Patent number: 11655417Abstract: The invention relates to a liquid-crystalline medium, in particular based on a mixture of polar compounds, and to the use thereof for an active-matrix display, in particular based on the VA, SA-VA, IPS, PS-IPS, FFS, PS-FFS, UB-FFS or PS-UB-FFS effect.Type: GrantFiled: April 27, 2020Date of Patent: May 23, 2023Assignee: MERCK PATENT GMBHInventors: Su-Young Kim, Chang-Suk Choi, Jeong-Hee Sung, Ming Chou Wu, Sang-Kyu Lee
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Publication number: 20220282158Abstract: A liquid-crystal (LC) media having a negative dielectric anisotropy containing a compound of formula I and the use of the LC media for optical, electro-optical and electronic purposes, in particular in energy-efficient LC displays, especially in IPS, FFS, VA or PS-VA displays.Type: ApplicationFiled: February 23, 2022Publication date: September 8, 2022Applicant: Merck Patent GmbHInventors: Zoe WANG, Peter ZHAO, Chang-Suk CHOI
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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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Publication number: 20200407640Abstract: LC media and LC displays containing an LC medium with positive dielectric anisotropy, which contains one or more compounds of formula I in a concentration of >0 and ?10% and displays addressed by an active matrix and in particular displays of the IPS, PS-IPS, FFS, PS-FFS, HB-FFS, U-IPS, TN, PS-TN, STN or TN-TFT mode.Type: ApplicationFiled: June 26, 2020Publication date: December 31, 2020Applicant: MERCK PATENT GMBHInventors: Yeon-Jeong HAN, Dong-Hyun KIM, Heui-Seok JIN, Chang-Suk CHOI
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Publication number: 20200339882Abstract: The invention relates to a liquid-crystalline medium, in particular based on a mixture of polar compounds, and to the use thereof for an active-matrix display, in particular based on the VA, SA-VA, IPS, PS-IPS, FFS, PS-FFS, UB-FFS or PS-UB-FFS effect.Type: ApplicationFiled: April 27, 2020Publication date: October 29, 2020Applicant: MERCK PATENT GMBHInventors: Su-Young KIM, Chang-Suk CHOI, Jeong-Hee SUNG, Ming Chou WU, Sang-Kyu LEE
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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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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
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Publication number: 20180265786Abstract: Liquid-crystalline media containing a) one or more compounds of formula IA, and b) one or more compounds of formula II and c) one or more compounds of formulae III-1 to III-4, their use in electro-optical displays, particularly in active-matrix displays based on the VA, ECB, FFS or IPS effect.Type: ApplicationFiled: March 16, 2018Publication date: September 20, 2018Applicant: MERCK PATENT GMBHInventors: Chang-Suk Choi, Chang-Jun Yun, Yeon-Jeong Han, Heui-Seok Jin, Yong-Kuk Yun
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Publication number: 20180265784Abstract: A liquid-crystalline medium which comprises at least one compound of the formula I, and one or more compounds of the formula ST and to the use thereof for an active-matrix display, in particular based on the VA, PSA, PA-VA, SS-VA, SA-VA, PS-VA, PALC, IPS, PS-IPS, UB-FFS, U-IPS, FFS or PS-FFS effect.Type: ApplicationFiled: March 16, 2018Publication date: September 20, 2018Applicant: MERCK PATENT GMBHInventors: Chang-Suk CHOI, Chang-Jun YUN, Yeon-Jeong HAN, Heui-Seok JIN, Yong-Kuk YUN
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Publication number: 20180195002Abstract: The present invention relates to liquid-crystalline media comprising one or more compounds selected from the compounds of formula I and compounds of formulae CV, OT and CP wherein the occurring groups have the meanings defined herein, and to liquid-crystal displays containing these media, especially to active-matrix displays and in particular to IPS and FFS displays. The invention further relates to a process for the fabrication of liquid crystal displays using the ODF process.Type: ApplicationFiled: January 9, 2018Publication date: July 12, 2018Applicant: MERCK PATENT GMBHInventors: Chang-Jun YUN, Chang-Suk CHOI, Yeon-Jeong HAN, Heui-Seok JIN, Yong-Kuk YUN