Patents Assigned to JIANGSU HECHENG DISPLAY TECHNOLOGY CO., LTD.
  • Patent number: 11851599
    Abstract: A liquid crystal composition and a liquid crystal display device including the liquid crystal composition include at least one compound of general formula I and at least one compound of general formula II. Compared with the prior art, the liquid crystal composition has a smaller voltage change rate at high and low temperatures and a shorter low temperature response time, while maintaining an appropriate optical anisotropy, an appropriate clearing point, an appropriate absolute value of dielectric anisotropy, such that the liquid crystal display device having the liquid crystal composition has a better display and a faster response speed.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: December 26, 2023
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Di He, Wenquan Ding, Haibin Xu, Shuang Xu, Lifang Yao
  • Patent number: 11827829
    Abstract: A liquid crystal composition containing a dibenzo derivative comprising a compound of general formula I and a compound of general formula II, and a liquid crystal display device containing the same, are disclosed. The liquid crystal composition is characterized by its excellent physical properties with respect to a liquid crystal display. The liquid crystal display device containing the liquid crystal composition has a good transmittance and a high contrast.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: November 28, 2023
    Assignee: JIANGSU HECHENG DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Lifang Yao, Di He, Haibin Xu, Wenquan Ding, Shuang Xu
  • Patent number: 11788010
    Abstract: A liquid crystal composition includes at least one compound of general formula F and at least one compound of general formula N. A liquid crystal display device includes the liquid crystal composition. The liquid crystal composition has a larger K value, a smaller rotational viscosity, a higher VHR value, a longer low temperature storage time and a shorter response time while maintaining an appropriate clearing point, an appropriate optical anisotropy, and an appropriate absolute value of dielectric anisotropy, such that the liquid crystal display device including the liquid crystal composition has a better contrast, a wider temperature range for application, a faster response speed, a better contrast and a higher reliability.
    Type: Grant
    Filed: October 26, 2022
    Date of Patent: October 17, 2023
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Chenglong Sun, Yafei Yang, Tengyun Zhao, Rongrong Li, Huijuan Dai, Panpan Wang, Di He, Wenquan Ding
  • Patent number: 11773327
    Abstract: A PSA-type liquid crystal composition includes a host liquid crystal A and a polymerizable component B, where the host liquid crystal A includes one or more liquid crystal compounds, and the polymerizable component B includes at least one compound selected from compounds of general formula I-1, general formula I-2 and general formula I-3. A liquid crystal display device includes the PSA-type liquid crystal composition above. The PSA-type liquid crystal composition has better intersolubility, cannot be crystallized at a low-temperature environment, can form a relatively stable pretilt angle after the polymerization of the polymerizable component, avoids the image sticking, and inhibits the occurrence of a display defect, such as Zara Particle, during the polymerization.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: October 3, 2023
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Wenyang Ma, Liwei Wang, Weigang Yan, Wenming Han, Haibin Xu
  • Patent number: 11634640
    Abstract: A liquid crystal composition includes at least one compound of general formula I, at least one compound of general formula II and at least one compound of general formula III. The liquid crystal composition has a higher optical anisotropy, the relatively large elastic constants K11 and K33 while maintaining a relatively high clearing point, an appropriate dielectric anisotropy and a better low-temperature intersolubility. A liquid crystal display device which includes the liquid crystal composition has advantages of a fast response, a high contrast and a wide temperature range, thereby having a good display effect and a large range of applicability.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: April 25, 2023
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Li Wang, Haibing Xu, Pengfei Li, Di He, Rui Jin
  • Patent number: 11629291
    Abstract: A liquid crystal composition contains: at least one compound of general formula I and at least one polymerizable compound of general formula II. Such a liquid crystal composition has a suitable optical anisotropy, a suitable dielectric anisotropy, and a better pretilt angle consistency while maintaining a relatively high clearing point, and the drop mura is good. When the liquid crystal composition is applied to a PSA liquid crystal display, the liquid crystal composition has an excellent display effect.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: April 18, 2023
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Wenyang Ma, Liwei Wang, Haibin Xu, Wenming Han, Wenqi Zhang
  • Patent number: 11466212
    Abstract: A liquid crystal composition includes one or more compounds of general Formula I in an amount of 1%-30% by weight of the total weight of the liquid crystal composition, one or more compounds of general Formula II in an amount of 5%-35% by weight of the total weight of the liquid crystal composition, and one or more compounds of general Formula III in an amount of 1%-35% by weight of the total weight of the liquid crystal composition. The liquid crystal composition has an appropriate clearing point, an appropriate optical anisotropy, an appropriate dielectric anisotropy, as well as a higher voltage holding ratio, a higher transmittance, a good high-temperature resistant performance and a faster response speed, thus being suitable for display modes, such as VA, IPS and FFS. A photoelectric display device includes the liquid crystal composition.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: October 11, 2022
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Weigang Yan, Wenyang Ma, Wenming Han
  • Patent number: 11359140
    Abstract: Disclosed are a liquid crystal composition and a liquid crystal display device. The liquid crystal composition comprises at least one compound of general formula I, at least one compound of general formula II, at least one compound of general formula III, and at least one compound of general formula IV. By compounding the four compounds, the composition can have advantages of a wide temperature range of nematic phase, a low viscosity and a low threshold voltage, and the liquid crystal display element can have a short response time and great power saving performance.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: June 14, 2022
    Assignee: JIANGSU HECHENG DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Wenyang Ma, Wenming Han, Haibin Xu, Liwei Wang, Weigang Yan
  • Patent number: 11345854
    Abstract: A liquid crystal dielectric applicable to high-frequency electromagnetic wave modulation has a clearing point of the liquid crystal dielectric higher than 110° C., a low-temperature storage temperature lower than ?20° C., and an optical anisotropy greater than 0.35. The liquid crystal dielectric includes: one or more compounds selected by general formula I, which occupy 30-80% of the total weight of the liquid crystal dielectric, and one or more compounds selected by general formula II and/or general formula III, which occupy 20-70% of the total weight of the liquid crystal dielectric.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: May 31, 2022
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Wenquan Ding, Zhenting Zhou, Panpan Wang
  • Patent number: 11339328
    Abstract: A liquid crystal composition includes at least one compound of general Formula I, at least one compound of general Formula II and at least one compound of general Formula M. The polymerizable liquid crystal composition provides a higher VHR (especially an excellent VHR after UV irradiation), a lower surface roughness of the polymer layer, a faster polymerization rate, a lower residual amount of the polymerizable compound and a better pretilt angle stability, which enables the production of a liquid crystal display device with a better voltage stability and a faster response speed, and can effectively reduce or prevent the occurrences of problems such as “burn-in”, “image sticking”, “Zara Particle” and “uneven display” in the liquid crystal display device. A liquid crystal display includes the liquid crystal composition.
    Type: Grant
    Filed: February 24, 2021
    Date of Patent: May 24, 2022
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Chenglong Sun, Wenquan Ding, Haibin Xu, Shuang Xu
  • Patent number: 11299674
    Abstract: The present invention provides a liquid crystal composition comprising: at least one compound of general Formula I; at least one compound of general Formula II; at least one compound of general Formula M and at least one compound of general Formula N. The present invention also provides a liquid crystal display device comprising the liquid crystal composition. The liquid crystal composition provided in the present invention has a higher optical anisotropy, a higher clearing point, a higher dielectric anisotropy, a high transmittance and a larger average elastic constant. When the liquid crystal composition is used in the IPS liquid crystal display device, the transmittance of the display device can be effectively improved, so that the display device has a good display performance while also having good energy-saving and environment-friendly characteristics.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: April 12, 2022
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Lifang Yao, Di He, Rui Jin
  • Patent number: 11248170
    Abstract: The present invention provides a polymerizable compound with a structure of general formula I, which exhibits none or few of the problems existing in the prior art. A polymerizable liquid crystal composition comprising the polymerizable compound has good stability and higher reliability, and is embodied by having a smaller pretilt angle change and higher voltage holding ratio. Also, there is little or no image sticking effect in a liquid crystal display device comprising the polymerizable liquid crystal composition. The present invention also provides a method of synthesizing a polymerizable compound with a structure of general formula I. The present invention further provides a polymerizable liquid crystal composition comprising the polymerizable compound and a liquid crystal display device comprising the polymerizable liquid crystal composition.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: February 15, 2022
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Wenming Han, Wenyang Ma, Shuang Xu, Haibin Xu
  • Patent number: 11193063
    Abstract: A compound having the structure of general formula I is useful as a liquid crystal composition and as a photoelectric display device including the liquid crystal composition. The compound having the structure of general formula I is chemically and physically stable, and has higher clearing point, and both large dielectric anisotropy and large optical anisotropy at the same time. The compound having the structure of general formula I is well compatible with other liquid crystal compounds when applied in a liquid crystal composition, the composition has good stability especially in a low-temperature environment, the characteristic of fast response and a wide range of applicabilities, especially applicable to the IPS-type and TN-TFT-type liquid crystal display devices.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: December 7, 2021
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Wenming Han, Wenqi Zhang, Wenyang Ma, Zhaoyuan Chen
  • Publication number: 20210363424
    Abstract: A liquid crystal composition and a liquid crystal display device including the liquid crystal composition include at least one compound of general formula I and at least one compound of general formula II. Compared with the prior art, the liquid crystal composition has a smaller voltage change rate at high and low temperatures and a shorter low temperature response time, while maintaining an appropriate optical anisotropy, an appropriate clearing point, an appropriate absolute value of dielectric anisotropy, such that the liquid crystal display device having the liquid crystal composition has a better display and a faster response speed.
    Type: Application
    Filed: May 13, 2021
    Publication date: November 25, 2021
    Applicant: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Di HE, Wenquan DING, Haibin XU, Shuang XU, Lifang YAO
  • Patent number: 11162028
    Abstract: A liquid crystal composition includes at least one compound of general formula I and at least one compound selected from a group consisting of the compounds of general formula II-1 and general formula II-2. The liquid crystal composition provided by the present invention has suitable optical anisotropy, high clearing point, high elastic constants K11 and K33, and relatively low dielectric anisotropy. When the liquid crystal composition is applied to a liquid crystal display device, the liquid crystal display device may have better weather resistance and higher contrast ratio.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: November 2, 2021
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Beibei Zhu, Haibin Xu, Pengfei Li, Di He, Shuang Xu
  • Patent number: 11155752
    Abstract: The present invention discloses a liquid crystal composition comprising at least one compound of general formula I and a display device thereof. The present invention also discloses a liquid crystal display device comprising the liquid crystal composition of the present invention. The liquid crystal composition provided by the present invention has characteristics, such as a high absolute value of negative dielectric anisotropy, a high optical anisotropy, a superior low-temperature stability, a fast response speed and so forth. The liquid crystal display device comprising the liquid crystal composition of the present invention can satisfy the demand for low driving voltage and fast response.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: October 26, 2021
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Wenming Han, Haibin Xu, Shuang Xu
  • Publication number: 20210317369
    Abstract: A liquid crystal dielectric applicable to high-frequency electromagnetic wave modulation has a clearing point of the liquid crystal dielectric higher than 110° C., a low-temperature storage temperature lower than ?20° C., and an optical anisotropy greater than 0.35. The liquid crystal dielectric includes: one or more compounds selected by general formula I, which occupy 30-80% of the total weight of the liquid crystal dielectric, and one or more compounds selected by general formula II and/or general formula III, which occupy 20-70% of the total weight of the liquid crystal dielectric.
    Type: Application
    Filed: September 6, 2019
    Publication date: October 14, 2021
    Applicant: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Wenquan Ding, Zhenting Zhou, Panpan Wang
  • Publication number: 20210284910
    Abstract: A liquid crystal composition includes at least one compound of general Formula I, at least one compound of general Formula II and at least one compound of general Formula M. The polymerizable liquid crystal composition provides a higher VHR (especially an excellent VHR after UV irradiation), a lower surface roughness of the polymer layer, a faster polymerization rate, a lower residual amount of the polymerizable compound and a better pretilt angle stability, which enables the production of a liquid crystal display device with a better voltage stability and a faster response speed, and can effectively reduce or prevent the occurrences of problems such as “burn-in”, “image sticking”, “Zara Particle” and “uneven display” in the liquid crystal display device. A liquid crystal display includes the liquid crystal composition.
    Type: Application
    Filed: February 24, 2021
    Publication date: September 16, 2021
    Applicant: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Chenglong Sun, Wenquan Ding, Haibin Xu, Shuang Xu
  • Publication number: 20210222066
    Abstract: A liquid crystal composition includes the compound of general formula I, and a photoelectric display device also includes the liquid crystal composition of general formula I. The compound of general formula I enables the liquid crystal composition including the same to maintain larger dielectric anisotropy, have a desired level of optical anisotropy, higher photo-thermal stability and nematic phase stability, and have a wide range of applicabilities, especially applicable to the IPS-type and TN-TFT-type liquid crystal display devices.
    Type: Application
    Filed: December 11, 2018
    Publication date: July 22, 2021
    Applicant: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Wenming Han, Haibin Xu, Wenqi Zhang, Di He
  • Patent number: 11053441
    Abstract: A liquid crystal composition and the use thereof are provided. The liquid crystal composition comprises 15-30% by weight of three or more compounds of general formula I; the general formula I must comprises at least two compounds of general formula I-1; wherein, by weight of the total amount of the liquid crystal composition, the total amount of the compounds of general formula I-1 is no lower than 10%, and the content of each of the compounds of general formula I-1 is no higher than 8%. The liquid crystal composition has appropriately high optical anisotropy, higher dielectric anisotropy, lower threshold voltage, suitable elastic constant, suitable temperature range of nematic phase, good reliability and heat stability, and good low-temperature intersolubility.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: July 6, 2021
    Assignee: Jiangsu Hecheng Display Technology Co., Ltd.
    Inventors: Haibin Xu, Wenming Han