Patents Assigned to Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd.
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Patent number: 12145952Abstract: The present invention discloses a heteroatom- and cycloalkyl-containing organic compound and an organic electroluminescent device containing the compound. The general structural formula of the organic compound is as represented by Formula I. The organic compound has a boron-nitrogen structure with multiple resonance effect, wherein a cycloalkyl-containing fluorenyl structure is introduced on the basis of the boron-nitrogen structure. The molecular size is greatly expanded by means of the cycloalkyl group, thereby effectively avoiding a concentration quenching effect, while the molecular orientation is enhanced due to the planarity of the fluorenyl group.Type: GrantFiled: December 11, 2023Date of Patent: November 19, 2024Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Songyuan Liu, Zaifeng Xie, Zhe Shao, Jiacheng Zhang, Jian Zhang, Tianyu Wei
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Publication number: 20240315128Abstract: The present invention discloses a compound containing a carbazole derivative and an organic electroluminescent device comprising the compound. The structure of the compound containing the carbazole derivative is one of the following structures. The compound has a relatively high hole transport rate, a relatively high HOMO energy level value, and a relatively good thermal stability. When the compound containing the carbazole derivative as provided by the present invention is applied to a hole transport layer of an organic electroluminescent device, the hole transport layer can improve the luminous efficiency of the organic electroluminescent device, reduce the driving voltage of the organic electroluminescent device, prolong the lifetime of the organic electroluminescent device, and overcome the defects in the prior art.Type: ApplicationFiled: May 20, 2024Publication date: September 19, 2024Applicant: Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd.Inventors: Zaifeng XIE, Tianyu WEI, Songyuan LIU
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Patent number: 12043783Abstract: A liquid crystal composition containing a benzochromene compound and the use thereof in a liquid crystal display element or liquid crystal display. The liquid crystal composition comprises one or more compounds represented by Formula I and one or more compounds represented by Formula II. The liquid crystal composition has the characteristics of a small rotational viscosity, a large elastic constant, a high transmittance, a fast response speed, a strong resistance to ultraviolet light irradiation, and a high long-time light stability, and is particularly suitable for the field of TV display.Type: GrantFiled: November 17, 2022Date of Patent: July 23, 2024Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Xiaolong Wang, Qing Cui, Yunxia Qiao, Yan Wang, Shuai Zhao, Hao Liu
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Patent number: 12024664Abstract: The present invention belongs to the technical field of liquid crystal materials, and in particular relates to a liquid crystal composition with good frequency dependence and a liquid crystal display element or liquid crystal display containing the liquid crystal composition. The liquid crystal composition of the present invention comprises a compound represented by Formula I, a compound represented by Formula II and a compound represented by Formula III, wherein the mass percentage content of the compound represented by Formula I is not less than 30%. The liquid crystal composition provided by the present invention has an appropriate optical anisotropy, an appropriate dielectric anisotropy, especially a relatively low rotational viscosity, a good low-temperature mutual solubility and a good reliability, especially good frequency dependence.Type: GrantFiled: December 12, 2022Date of Patent: July 2, 2024Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Hongru Gao, Wenxiao Xing, Meida Pan, Qing Cui, Gang Wen, Jikai Li
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Patent number: 12006462Abstract: The present invention belongs to the technical field of liquid crystal materials, and in particular relates to a liquid crystal composition and a liquid crystal display element or liquid crystal display containing the liquid crystal composition. The present invention discloses a liquid crystal composition, comprising one or more compounds represented by Formula I, one or more compounds represented by Formula II, and one or more compounds represented by Formula III. The liquid crystal composition of the present invention has a large optical anisotropy and a small ratio of ?1/K11, and can be used for developing a liquid crystal display element or liquid crystal display with a low cell thickness and a fast response.Type: GrantFiled: August 25, 2020Date of Patent: June 11, 2024Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Sumin Kang, Zhian Liang, Kui Wang, Guoliang Yun, Wei Zhang
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Publication number: 20240158419Abstract: The present invention discloses a heteroatom- and cycloalkyl-containing organic compound and an organic electroluminescent device containing the compound. The general structural formula of the organic compound is as represented by Formula I. The organic compound has a boron-nitrogen structure with multiple resonance effect, wherein a cycloalkyl-containing fluorenyl structure is introduced on the basis of the boron-nitrogen structure. The molecular size is greatly expanded by means of the cycloalkyl group, thereby effectively avoiding a concentration quenching effect, while the molecular orientation is enhanced due to the planarity of the fluorenyl group.Type: ApplicationFiled: December 11, 2023Publication date: May 16, 2024Applicant: Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd.Inventors: Songyuan LIU, Zaifeng XIE, Zhe SHAO, Jiacheng ZHANG, Jian ZHANG, Tianyu WEI
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Patent number: 11976229Abstract: The present invention belongs to the technical field of liquid crystal materials, and in particular relates to a negative liquid crystal composition and a liquid crystal display element or liquid crystal display containing the liquid crystal composition. The present invention discloses a negative dielectric nematic liquid crystal composition, comprising a compound represented by Formula I, one or more compounds represented by Formula II, and one or more compounds represented by Formula III. The liquid crystal composition has a relatively low rotational viscosity (?1), a high clearing point (Cp), a good solubility and a high stability to heat and light (VHR) on the basis of maintaining an appropriate optical anisotropy (?n), and can be used for developing a liquid crystal display element or liquid crystal display with a low cell thickness, a wide temperature for display, and a fast response.Type: GrantFiled: August 25, 2020Date of Patent: May 7, 2024Assignee: Shijiazhuang Chengzhi Yonghua Display Material Co., ltd.Inventors: Wei Zhang, Qing Cui, Gang Wen, Sumin Kang
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Publication number: 20240018168Abstract: The present invention discloses a compound with multiple resonance characteristics and an organic electroluminescent device containing the compound. In the present invention, by introducing a bridged cyclic alkyl group, the rigidity of the compound is increased, the thermal stability and glass transition temperature of a host material can be effectively improved while the dispersion of guest molecules in the material is maintained, and the lifetime of a blue-light device is significantly prolonged. The compound provided by the present invention is suitable for blue host/dopant systems and organic electroluminescent devices of blue-series AM-OLEDs, and organic electroluminescent devices containing the compound have a higher external quantum efficiency, a lower driving voltage, and a particularly excellent lifetime.Type: ApplicationFiled: September 21, 2023Publication date: January 18, 2024Applicant: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Zaifeng XIE, Tianyu WEI, Yubin XING, Lingwei XU, Songyuan LIU
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Patent number: 11555151Abstract: A liquid crystal composition, a liquid crystal display element and a liquid crystal display comprising the liquid crystal composition belong to the field of liquid crystal display. The liquid crystal composition comprises a compound represented by formula I with a mass content of 1-10% as the first component, a compound represented by formula II with a mass content of 1-20% as the second component, more than two compounds represented by formula III as the third component, more than three compounds represented by formula IV as the fourth component, and one or more polymerizable compounds as the fifth component, the crystal composition has low rotational viscosity and low ?1/K33 on the basis of maintaining appropriate optical anisotropy. When applied to liquid crystal display elements or liquid crystal displays, the liquid crystal display has a fast response speed.Type: GrantFiled: April 3, 2020Date of Patent: January 17, 2023Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Xuanfei Sun, Sumin Kang, Gang Wen, Qing Cui, Hongru Gao, Jikai Li, YanLi Dong
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Patent number: 11535799Abstract: A liquid crystal composition, a liquid crystal display element and a liquid crystal display including the liquid crystal composition, belonging to the field of liquid crystal display. The liquid crystal composition includes a compound represented by formula I and one or more compounds represented by formula II. The liquid crystal composition can increase the dielectric anisotropy and improve the voltage retention rate.Type: GrantFiled: November 18, 2020Date of Patent: December 27, 2022Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Kui Wang, Sumin Kang, Zhian Liang, Guoliang Yun, Hongfeng Li, Jiaming Li, Ruixiang Liang
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Patent number: 11466214Abstract: A positive dielectric anisotropic liquid crystal composition includes one or more compounds of formula I and one or more compounds of formula II: wherein R1 represents cyclopropyl, cyclobutyl or cyclopentyl, R2, R3 and R4 are as defined in the specification, and a liquid crystal display device. The liquid crystal composition has positive dielectric properties, a high charge retention ratio, a low rotary viscosity, a fast response time, and especially a high transmittance, and is suitable for manufacturing a TFT-LCD with a high transmittance and a fast response.Type: GrantFiled: April 29, 2019Date of Patent: October 11, 2022Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Yapeng Huang, Yunxia Qiao, Gang Wen, Qing Cui, Guoliang Yun, Mingxia Wang, Sumin Kang
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Patent number: 11462694Abstract: There is provided an imidazole derivative, wherein the structural formula of the imidazole derivative is as represented by formula I: There is further provided a material containing the imidazole derivative and an organic light-emitting device containing the imidazole derivative. The imidazole derivative has an excellent carrier transport capacity, and the organic light-emitting device produced by using the material has obviously reduced starting voltage and improved luminous efficiency and luminance; and due to the features such as relatively good film-forming performance and simple material synthesis and purification methods which are applicable to mass production, the imidazole derivative is an ideal option for an electron transport material of organic light-emitting devices.Type: GrantFiled: August 29, 2018Date of Patent: October 4, 2022Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Jianhua Cao, Liang Dong, Shibo Wang, Jianchuan Zhang, Yan Sui, Ruimao Hua
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Patent number: 11447702Abstract: A liquid crystal composition, a liquid crystal display element and a liquid crystal display comprising the liquid crystal composition belong to the field of liquid crystal display. The liquid crystal composition of the present disclosure comprises a compound represented by formula I, a compound represented by formula II, one or more compounds represented by formula III, one or more compounds represented by formula IV and more than three compounds represented by formula V. The liquid crystal composition has low rotational viscosity ?1 and high stability to heat and light on the basis of maintaining appropriate optical anisotropy ?n, which can realize fast response of liquid crystal display.Type: GrantFiled: April 3, 2020Date of Patent: September 20, 2022Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Ruixiang Liang, Sumin Kang, Gang Wen, Qing Cui, Hongru Gao, Yuanyuan Li, Jikai Li, YanLi Dong, Xinxia Wang
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Patent number: 11441072Abstract: A dielectric negative liquid crystal composition, a liquid crystal display element and a liquid crystal display containing the liquid crystal composition belong to the field of liquid crystal display. The liquid crystal composition of the present disclosure includes a compound represented by formula I, a compound represented by formula II, two or more compounds represented by formula III and one or more compounds represented by formula IV. The liquid crystal composition of the present invention has high dielectric anisotropy, high elastic constant K, low rotational viscosity, can be used to develop large dielectric, fast response liquid crystal display elements or liquid crystal displays.Type: GrantFiled: April 3, 2020Date of Patent: September 13, 2022Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Wei Zhang, Sumin Kang, Xiaolong Wang, YunXia Qiao, Qing Cui, Gang Wen
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Patent number: 11424418Abstract: The present invention relates to an organic electroluminescent material, an organic electroluminescent device, and a method for preparing the organic electroluminescent device. Due to comprising an organic compound A with 3.0 eV>ET?2.0 eV and a compound B of M(LA)x(LB)y(LC)z, the organic electroluminescent material of the present invention has the advantages of an increased luminescence lifetime and/or a reduced operating voltage on the basis of maintaining other electronic properties at a certain level.Type: GrantFiled: April 14, 2020Date of Patent: August 23, 2022Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Jianhua Cao, Zhe Shao, Yan Sui, Minhui Jia, Shibo Wang, Weizhuang He
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Patent number: 11268027Abstract: A liquid crystal composition, and a liquid crystal display element or liquid crystal display comprising the liquid crystal composition, and belongs to the field of liquid crystal display, wherein the liquid crystal composition comprises a compound represented by formula I, one or more compounds represented by formula II, one or more compounds represented by formula III, one or more compounds represented by formula IV, and at least one polymerizable compound, and has a large dielectric anisotropy (??) and a large optical anisotropy (?n), and has an obvious advantage in the development of a liquid crystal display having a high transmittance and a low cell thickness.Type: GrantFiled: April 11, 2019Date of Patent: March 8, 2022Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Sumin Kang, Zhian Liang, Guoliang Yun, Ruixiang Liang, Jiaming Li, Xuan Zhang
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Patent number: 11254873Abstract: A liquid crystal composition, and a liquid crystal display element or liquid crystal display including the liquid crystal composition and belonging to the field of liquid crystal display. The liquid crystal composition includes a compound represented by formula I, a compound represented by formula II, one or more compounds represented by formula III, and at least one polymerizable compound. The liquid crystal composition simultaneously has a low rotary viscosity, a large refractive index, and a fast response speed.Type: GrantFiled: April 11, 2019Date of Patent: February 22, 2022Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL, CO., LTD.Inventors: Sumin Kang, Zhian Liang, Ruixiang Liang, Jiaming Li, Guoliang Yun, Xuan Zhang
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Patent number: 11242486Abstract: A liquid crystal composition, and a liquid crystal display element or liquid crystal display comprising the liquid crystal composition, and belongs to the field of liquid crystal display. The liquid crystal composition comprises a compound represented by formula I, a compound represented by formula II, one or more compounds represented by formula III, and at least one polymerizable compound. The liquid crystal composition has a higher clearing point (CP), a large K value, a suitable optical anisotropy (?n), and a fast response speed.Type: GrantFiled: April 11, 2019Date of Patent: February 8, 2022Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Sumin Kang, Zhian Liang, Ruixiang Liang, Guoliang Yun, Jiaming Li, Xuan Zhang
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Patent number: 11242487Abstract: A liquid crystal composition, and a liquid crystal display element or liquid crystal display comprising the liquid crystal composition, and belongs to the field of liquid crystal display, the liquid crystal composition of the present disclosure comprising a compound represented by formula I, one or more compounds represented by formula II, one or more compounds represented by formula III, and at least one polymerizable compound. The liquid crystal composition simultaneously has a low rotary viscosity (?1), a larger dielectric anisotropy (??), and a fast response speed.Type: GrantFiled: April 11, 2019Date of Patent: February 8, 2022Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Sumin Kang, Zhian Liang, Guoliang Yun, Xuan Zhang, Jiaming Li, Ruixiang Liang
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Patent number: 11208395Abstract: The present invention discloses a compound of which a structural formula thereof is represented as the following formula: The compound disclosed by the present invention can be used as a liquid crystal compound and overcomes the problem that solubility of the traditional dibenzothiophene-class liquid crystals is poor, and thus can be better applied to the liquid crystal material field. The present invention further discloses a liquid crystal medium containing the compound and an application thereof.Type: GrantFiled: May 8, 2018Date of Patent: December 28, 2021Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Ming Li, Hongru Gao, Guoliang Yun, Xing Zhang, Jinsong Meng, Li Zhang, Lei Zhao, Yanli Dong