Patents Assigned to Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.
-
Publication number: 20190353963Abstract: Disclosed is a liquid crystal display device comprising an array substrate and an opposite substrate arranged facing the array substrate, wherein the structure of said array substrate comprises elongated and evenly spaced slit electrodes and electrode gaps between the slit electrodes, and said opposite substrate comprises a bulk electrode; and further comprises a liquid crystal composition between said array substrate and the opposite substrate. The liquid crystal display device has a higher light transmittance, such that more backlight passes through the liquid crystal display device, resulting in the liquid crystal display device having a higher luminance.Type: ApplicationFiled: August 22, 2018Publication date: November 21, 2019Applicant: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Xuefeng LI, Kelun SHU, Kai XU, Lihong GUI, Qian ZHANG, Zhengqiang LI, Yunxia QIAO, Qing CUI, Wenxiao XING
-
Publication number: 20190345129Abstract: 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: ApplicationFiled: May 8, 2018Publication date: November 14, 2019Applicant: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Ming LI, Hongru GAO, Guoliang YUN, Xing ZHANG, Jinsong MENG, Li ZHANG, Lei ZHAO, Yanli DONG
-
Patent number: 10472570Abstract: Disclosed are a liquid crystal composition comprising a liquid of formula I and formula II-B, and a liquid crystal compound and a related liquid crystal display device wherein R0, R1, R2 and R3 each independently represent an alkyl group having a carbon atom number of 1-10, a fluoro-substituted alkyl group having a carbon atom number of 1-10, an alkoxy group having a carbon atom number of 1-10, a fluoro-substituted alkoxy group having a carbon atom number of 1-10, an alkenyl group having a carbon atom number of 2-10, a fluoro-substituted alkenyl group having a carbon atom number of 2-10, an alkenoxy group having a carbon atom number of 3-8 or a fluoro-substituted alkenoxy group having a carbon atom number of 3-8, and any one or more non-connected CH2 in R0, R1, R2 and R3 may be substituted with cyclopentyl, cyclobutyl, cyclopropyl or —O—; Y represents ethyl or ethenyl; each independently represent one of and any fluorobenzene; represents benzene or fluorobenzene; and m represents one of 1,Type: GrantFiled: October 10, 2017Date of Patent: November 12, 2019Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Kelun Shu, Guoliang Yun, Yunxia Qiao, Zhengqiang Li
-
Patent number: 10457870Abstract: Disclosed are a chiral compound, a liquid crystal composition containing the chiral compound, an optically anisotropic body and a liquid crystal display device. The structural formula of said chiral compound is as represented by the following formula I: The chiral compound has a high HTP value and a good solubility; a highly helical, twisted liquid crystal composition can be prepared by adding a small amount of the chiral compound; reducing the addition amount of the chiral compound can reduce the negative effect of the chiral compound on the parameters of the liquid crystal composition; under the conditions of the same addition ratio and the same helical pitch, the chiral compound can reduce the response time of the liquid crystal composition; in addition, the chiral compound has a simple structure and greatly reduces the synthesis cost.Type: GrantFiled: July 19, 2018Date of Patent: October 29, 2019Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Yongfeng Bao, Guoliang Yun, Jinsong Meng, Ming Li, Hubo Zhang, Lei Zhao, Zhian Liang
-
Publication number: 20190292459Abstract: Disclosed is 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 has simultaneously a lower rotary viscosity, a better photoelectric performance, a higher clearing point, a good low temperature performance, and less display defects. Further disclosed is a liquid crystal display element or device comprising the liquid crystal composition.Type: ApplicationFiled: February 26, 2019Publication date: September 26, 2019Applicant: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO. , LTD.Inventors: Zhian LIANG, Guoliang YUN, Yujing DI, Zhe SHAO, Sumin KANG, Dongmei WANG
-
Patent number: 10351773Abstract: Disclosed are liquid crystal compounds of cycloalkyl-containing dibenzofuran derivatives, a preparation method therefor and use thereof. The compounds are as represented by formula I. In the molecular structures of the compounds of formula I provided by the present invention, liquid crystal compounds of cycloalkyl terminal group-containing dibenzofuran derivatives, compared with those having flexible alkyl chains as terminal groups, exhibit better intersolubility, and thus the use of a compound as represented by formula I provided by the present invention can improve the intersolubility of a liquid crystal compound and extend the application range of a liquid crystal mixture, producing an important application value.Type: GrantFiled: October 12, 2017Date of Patent: July 16, 2019Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTDInventors: Ming Li, Hongru Gao, Fangmiao Zhang, Jingsong Meng, Guoliang Yun, Xing Zhang, Lei Zhao, Jia Deng
-
Publication number: 20180320071Abstract: Disclosed is a polymerizable compound having a structural formula as represented by the following formula I: The polymerizable compound disclosed in the present invention has a plurality of ring systems, and the entire molecular structure thereof is curved and twisted. The present invention further discloses a liquid crystal medium comprising the polymerizable compound, the polymerizable compound provided by the present invention has an appropriate polymerization rate in the liquid crystal medium, and the liquid crystal medium can be well applied to a PS-(polymer stabilized)- or PSA-(polymer stabilized alignment)-type liquid crystal display device. Further disclosed is a liquid crystal display device prepared from the liquid crystal medium.Type: ApplicationFiled: May 7, 2018Publication date: November 8, 2018Applicant: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO., LTD.Inventors: Jinsong Meng, Zhiliang Shi, Lei Zhao, Ming Li, Wei Zhang, Xing Zhang, Guoliang Yun
-
Patent number: 10040998Abstract: Disclosed is a liquid crystal composition and use thereof. The liquid crystal composition comprises components a, b and c; wherein component a is selected from one of the compounds represented by formula I; component b is a liquid crystal composition having a dielectric anisotropy of greater than 3; and component c is a liquid crystal composition having a dielectric anisotropy of ?3 to 3. The liquid crystal composition has a high contrast ratio property, and has a low change rate at a low temperature, that is, the decrease of contrast ratio at a low temperature (such as ?20° C.) is smaller as compared to a normal temperature. The composition has suitable properties with regard to practical applications, including a broader nematic phase range, an appropriate dielectric anisotropy, optical anisotropy and operating voltage, an excellent response time, a high electrical resistivity and voltage holding ratio, a low rotary viscosity, etc.Type: GrantFiled: November 15, 2013Date of Patent: August 7, 2018Assignee: Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.Inventors: Guoliang Yun, Yunxia Qiao, Ruimao Hua, Xing Zhang, Ming Li, Jin Wang, Yajie Duan, Hongmei Cui, Yamin Li, Jingyi Feng
-
Patent number: 10017694Abstract: Disclosed is a liquid crystal medium containing a 2,4-diflurophenyl compound and the use thereof. The liquid crystal composition comprises the compounds as represented by formula I and formula II. The liquid crystal composition has a low rotary viscosity, good chemical and thermal stability and a fast response speed, it is suitable for a liquid crystal display device and particularly suitable for the use in an active matrix display of a TN, IPS or FFS mode.Type: GrantFiled: November 2, 2016Date of Patent: July 10, 2018Assignee: Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.Inventors: Hongru Gao, Yuqing Fu, Xuejiao Chen, Junhong Su, Renjie Liu
-
Patent number: 9994769Abstract: A liquid crystal composition having one or more compounds shown as formula I and one or more compounds shown as formula II, and the liquid crystal composition comprising a compound shown as formula II-A: wherein substituents are all defined. The composition has a low viscosity ?1, a moderate dielectric anisotropy ?? and a moderate optical anisotropy ?n, and can achieve fast response of a liquid crystal display.Type: GrantFiled: May 26, 2016Date of Patent: June 12, 2018Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIAL CO, LTD.Inventors: GuoLiang Yun, Kui Wang, Yun Xia Qiao, Wei Wang, Yan Li Dong
-
Patent number: 9803140Abstract: The present disclosure discloses a liquid crystal compound and a liquid crystal composition. The liquid crystal compound has a general structural formula as represented by formula I. The liquid crystal composition provided by the present disclosure has a lower rotary viscosity ?1, can achieve a quick response, and further has an appropriate dielectric anisotropy ??, an appropriate optical anisotropy ?n, a high stability to heat and light, a high VHR numerical value especially in the case where the liquid crystal is under harsh conditions, and a stability to electric field and electromagnetic radiation. As a liquid crystal material for use in thin film transistor techniques (TFT-LCD), the material further has the properties of a wider nematic phase temperature range, an appropriate birefringence anisotropy, a very high electrical resistivity, a good anti-ultraviolet performance, a high charge holding rate, a low vapor pressure etc.Type: GrantFiled: May 20, 2016Date of Patent: October 31, 2017Assignee: Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.Inventors: Guoliang Yuan, Lei Zhao, Kui Wang, Mingxia Wang, Ruimao Hua, Jinsong Meng
-
Patent number: 9540565Abstract: The present invention discloses liquid crystal compounds having dibenzopyran derivatives with cycloalkyl groups, and preparation methods and application thereof. The liquid crystal compounds having dibenzopyran derivatives with cycloalkyl terminal groups, shown in formula I, exhibit better miscibility and a very large negative dielectric constant, compared to those having a flexible alkyl chain as a terminal group, therefore the compounds of the present invention, shown in formula I, may improve the miscibility of liquid crystal compounds and broaden the application range of liquid crystal mixtures. In addition, the compounds may also increase the negative dielectric constants of liquid crystal mixtures, having an important application value.Type: GrantFiled: May 18, 2015Date of Patent: January 10, 2017Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO., LTDInventors: Ming Li, Jin Song Meng, Guo Liang Yun, Fang Miao Zhang, Wen Hai Lu, Jia Deng, Lei Zhao
-
Patent number: 9493704Abstract: A cycloheptane derivative as represented by formula (I), and preparation method and use thereof; the compound has photostability and thermostability, wide nematic phase and liquid crystalline state temperature range, and good low-temperature intersolubility, and particularly has low rotary viscosity ?1 and good dielectric anisotropy (??>0).Type: GrantFiled: September 17, 2013Date of Patent: November 15, 2016Assignee: Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.Inventors: Yaohua Han, Zhiguo Xia, Ruimao Hua, Zengjia Yang, Kui Wang, Hongfeng Li, Jianli Zhang
-
Patent number: 9481828Abstract: A liquid crystal compound containing cyclobutyl and a linking group difluoromethyleneoxy, and a preparation method and use thereof are disclosed. The compound is as shown in Formula I. The liquid crystal compound containing cyclobutyl as a terminal group and difluoromethyleneoxy (—CF2O—) as a linking group in the molecular structure of Formula I according to the present invention, has not only a high dielectric anisotropy, but also importantly an extremely fast response speed and a high clearing point, which are of great significance for the formulation of a liquid crystal mixture.Type: GrantFiled: November 26, 2013Date of Patent: November 1, 2016Assignee: Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd.Inventors: Guoliang Yun, Ruimao Hua, Kui Wang, Wenhai Lv, Jian Wang, Yaohua Han, Yunxia Qiao
-
Patent number: 9458381Abstract: This invention relates to liquid crystal compound of formula I containing benzene derivatives group that hydrogen substituted by deuterium. Liquid crystal compounds of formula I have not only large positive dielectric anisotropy, but also moderate optical anisotropy and driving voltage, thereby having great significance to formulate a liquid crystal mixture. A liquid crystal mixture containing such type of liquid crystal compounds can be applied in various display devices, which is particularly suitable for TN and STN display devices, and can also be used in IPS and VA display devices.Type: GrantFiled: July 3, 2014Date of Patent: October 4, 2016Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO., LTD.Inventors: Ze Feng Hou, Wen Hai Lu, Xing Zhang, Guo Liang Yun, Rui Mao Hua, Ming Li, Lei Zhao
-
Patent number: 9428693Abstract: A liquid crystal composition having a negative dielectric anisotropy is disclosed. The liquid crystal composition includes compounds of Formulas I to IV. The composition has a low threshold voltage, a low rotary viscosity, a high resistivity, a high voltage holding ratio, and a good high temperature and UV stability. The LC medium has the advantage of obviously reduced response time after polymerization under UV irradiation, thus having important application value.Type: GrantFiled: August 23, 2013Date of Patent: August 30, 2016Assignee: Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.Inventors: Gang Wen, Ruimao Hua, Guoliang Yuan, Jingyi Feng, Lianbo Mao, Xiaobin Rong, Lihong Gui, Ziqian Shi
-
Patent number: 9404038Abstract: The present invention is directed to compounds of the following General Formula I. The cyclopropyl-bearing liquid crystal compounds of Formula I of the present invention have a positive or negative dielectric anisotropy (??), an appropriate optical anisotropy (?n), an appropriate clearing point (CP), good low-temperature miscibility with other liquid crystals, a low rotary viscosity, and good UV stability and high-temperature thermal stability, and therefore have good use value. The compounds of the present invention can be used for preparing positive and negative liquid crystal compositions and can also be employed in passive and active matrix displays.Type: GrantFiled: May 22, 2015Date of Patent: August 2, 2016Assignee: Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.Inventors: Guoliang Yuan, Jia Deng, Ming Li, Hu-bo Zhang, Yun-xia Qiao, Jin-song Meng, Rui-mao Hua
-
Patent number: 9365771Abstract: This invention relates to liquid crystal compound of formula I containing a difluoromethyleneoxy linking group that hydrogen substituted by deuterium and therefore being very suitable for formulating a liquid crystal mixture. A liquid crystal mixture containing such type of liquid crystal compounds can be applied in various display devices.Type: GrantFiled: July 3, 2014Date of Patent: June 14, 2016Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO., LTD.Inventors: Wen Hai Lu, Ze Feng Hou, Xing Zhang, Guo Liang Yun, Rui Mao Hua, Jin Wang, Ya Jie Duan
-
Patent number: 9359552Abstract: Disclosed is a liquid crystal compound. The compound has a general structural formula as shown by formula I. Such a compound has good thermal and UV stability, large positive dielectric anisotropy ??, and can achieve a low threshold voltage when used in optics, thereby having great significance to the fast response of display devices, and therefore being very suitable for formulating a liquid crystal mixture. A liquid crystal mixture containing such a liquid crystal unit can be applied to various display devices, and is especially suitable for TN-TFT and STN display devices, but can also be used in IPS (in-plane switching) and VA (vertically aligned) display devices.Type: GrantFiled: November 21, 2012Date of Patent: June 7, 2016Assignee: Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd.Inventors: Guoliang Yun, Gang Wen, Zhian Liang, Ruimao Hua, Kui Wang, Xing Zhang, Zhiguo Xia, Yaohua Han
-
Patent number: 9303208Abstract: This invention relates to liquid crystal compounds of formula I containing cyclopentyl group and difluoromethyleneoxy linking group. Liquid crystal compounds of formula I have a large dielectric anisotropy, high clearing points, and a fast response speed, thereby having great significance to formulate a liquid crystal mixture.Type: GrantFiled: January 18, 2013Date of Patent: April 5, 2016Assignee: SHIJIAZHUANG CHENGZHI YONGHUA DISPLAY MATERIALS CO., LTD.Inventors: Guoliang Yuan, Zhian Liang, Kui Wang, Ruimao Hua, Gang Wen, Miaofang Zhang, Jinsong Meng