Patents by Inventor Lifang Yao
Lifang Yao 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).
-
Publication number: 20240026223Abstract: The present invention provides a liquid crystal composition and a liquid crystal display device thereof. The liquid crystal composition comprises at least one compound of general formula I and at least one compound of general formula II. The liquid crystal composition has a larger vertical dielectric constant (??), a larger ratio of the vertical dielectric constant to the absolute value of dielectric anisotropy (??/|??|), a larger Kave value and a higher transmittance while maintaining an appropriate clearing point, an appropriate optical anisotropy, and an appropriate absolute value of the dielectric anisotropy, such that the liquid crystal display device comprising the same has a better contrast, a faster response speed and a better transmittance while maintaining an appropriate range of operating temperature and an appropriate threshold voltage.Type: ApplicationFiled: August 12, 2021Publication date: January 25, 2024Inventors: Yunyun LIU, Di HE, Shuang XU, Haibin XU, Lifang YAO, Yafei YANG, Zhenting ZHOU, Dike PAN, Fei ZHAO
-
Patent number: 11851599Abstract: 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: GrantFiled: May 13, 2021Date of Patent: December 26, 2023Assignee: Jiangsu Hecheng Display Technology Co., Ltd.Inventors: Di He, Wenquan Ding, Haibin Xu, Shuang Xu, Lifang Yao
-
Patent number: 11827829Abstract: 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: GrantFiled: June 25, 2021Date of Patent: November 28, 2023Assignee: JIANGSU HECHENG DISPLAY TECHNOLOGY CO., LTD.Inventors: Lifang Yao, Di He, Haibin Xu, Wenquan Ding, Shuang Xu
-
Publication number: 20230257654Abstract: The present application provides a liquid crystal composition containing dibenzo derivatives and a liquid crystal display device. The liquid crystal composition comprises at least one compound of general formula I and at least one compound of general formula II.Type: ApplicationFiled: June 25, 2021Publication date: August 17, 2023Inventors: Di HE, Wenquan DING, Haibin XU, Shuang XU, Huijuan DAI, Lifang YAO
-
Patent number: 11299674Abstract: 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: GrantFiled: October 3, 2019Date of Patent: April 12, 2022Assignee: Jiangsu Hecheng Display Technology Co., Ltd.Inventors: Lifang Yao, Di He, Rui Jin
-
Publication number: 20220002623Abstract: Provided are a liquid crystal composition containing a dibenzo derivative and a liquid crystal display device. The liquid crystal composition includes at least one compound of general formula I and at least one compound of general formula II. The liquid crystal compositions have the characteristics of high clearing point, large optical anisotropy, large dielectric anisotropy, large ??, large ??/|??|, and large Kave. The liquid crystal display devices containing these liquid crystal compositions have the effects of good transmittance and high contrast. The liquid crystal composition can meet the requirements of the liquid crystal display device on low power consumption and good display effect and has high application value in liquid crystal displays of in-plane switching (IPS) mode, fringe field switching (FFS) mode, and vertical alignment (VA) mode.Type: ApplicationFiled: June 25, 2021Publication date: January 6, 2022Inventors: Lifang Yao, Di He, Haibin Xu, Wenquan Ding, Shuang Xu
-
Publication number: 20210363424Abstract: 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: ApplicationFiled: May 13, 2021Publication date: November 25, 2021Applicant: Jiangsu Hecheng Display Technology Co., Ltd.Inventors: Di HE, Wenquan DING, Haibin XU, Shuang XU, Lifang YAO
-
Patent number: 10723947Abstract: Provided is a liquid crystal composition, comprising: one or more compounds of general formula I accounting for 1-30% of the total weight of the liquid crystal composition; one or more compounds of general formula II accounting for 1-30% of the total weight of the liquid crystal composition; one or more compounds of general formula III accounting for 1-20% of the total weight of the liquid crystal composition; and one or more compounds of general formula IV accounting for 30-80% of the total weight of the liquid crystal composition. The liquid crystal composition has at least one of the following properties: a large specific resistance, a high voltage holding ratio, a suitable optical anisotropy, a large dielectric anisotropy, a small viscosity, a low threshold voltage, etc., and is also green and environmentally friendly.Type: GrantFiled: April 21, 2016Date of Patent: July 28, 2020Assignee: JIANGSU HECHENG DISPLAY TECHNOLOGY CO., LTD.Inventors: Yunyun Liu, Wenming Han, Wenquan Ding, Pengfei Li, Haibin Xu, Lifang Yao, Di He, Wenyang Ma, Heming Zhang, Junqiang Zhang
-
Publication number: 20200131440Abstract: 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: ApplicationFiled: October 3, 2019Publication date: April 30, 2020Applicant: Jiangsu Hecheng Display Technology Co., Ltd.Inventors: Lifang Yao, Di He, Rui Jin
-
Patent number: 10508237Abstract: Provided is a liquid crystal composition, comprising: 1-30% of one or more compounds of general formula I; 1-50% of one or more compounds of general formula II; 1-20% of one or more compounds of general formula III; 20-70% of one or more compounds of general formula IV; and 1-30% of one or more compounds of general formula V. The liquid crystal composition has properties such as a large maximum absolute transmittance, a high voltage holding ratio, better anti-UV properties, and high temperature reliability, and has a suitable optical anisotropy, a suitable dielectric anisotropy, and a relatively high clearing point, and is environmentally friendly.Type: GrantFiled: April 21, 2016Date of Patent: December 17, 2019Assignee: JIANGSU HECHENG DISPLAY TECHNOLOGY CO., LTD.Inventors: Wenyang Ma, Wenming Han, Haibin Xu, Wenquan Ding, Pengfei Li, Yunyun Liu, Di He, Lifang Yao, Heming Zhang
-
Patent number: 10457869Abstract: A liquid crystal composition comprises a compound of general formula I serving as a first component; a compound of general formula II-1 and/or general formula II-2 serving as a second component; a compound of general formula III serving as a third component; a compound of general formula IV serving as a fourth component; a compound of general formula V serving as a fifth component; and a compound of general formula VI serving as a sixth component. The liquid crystal composition has at least one characteristic among the characteristics of a large dielectric anisotropy, a large optical anisotropy, a high voltage holding ratio and a low threshold voltage and the like, and is suitable to be used in a liquid crystal display device. Additionally, a liquid crystal display device comprising the liquid crystal composition is also provided.Type: GrantFiled: April 21, 2016Date of Patent: October 29, 2019Assignee: Jiangsu Hecheng Display Technology Co., Ltd.Inventors: Huijuan Dai, Wenming Han, Wenquan Ding, Pengfei Li, Haibin Xu, Di He, Yunyun Liu, Lifang Yao, Wenyang Ma, Dingfu Ma, Heming Zhang
-
Patent number: 10067931Abstract: One or more computers receive input indicative of multiple files to be analyzed together, by performing one or more predetermined actions, using the contents (e.g. strings of text) of a corresponding one or more structures. The one or more structures are identified by the presence in each file, of corresponding names. The one or more structures are normally written into the files for use by an application program to layout the contents therein in a structured manner. The one or more computers are programmed to automatically parse each file, to identify therein the one or more layout structures e.g. based on the presence in each file of corresponding names of layout structures. After parsing, the one or more computer(s) perform the one or more predetermined actions, to obtain an output structure that holds the results based on the contents of each layout structure identified in each file.Type: GrantFiled: June 23, 2017Date of Patent: September 4, 2018Assignee: Oracle International CorporationInventors: Anish Desai, Lifang Yao, Sharad Bhardwaj
-
Publication number: 20180119011Abstract: Provided is a liquid crystal composition, comprising: 1-30% of one or more compounds of general formula I; 1-50% of one or more compounds of general formula II; 1-20% of one or more compounds of general formula III; 20-70% of one or more compounds of general formula IV; and 1-30% of one or more compounds of general formula V. The liquid crystal composition has properties such as a large maximum absolute transmittance, a high voltage holding ratio, better anti-UV properties, and high temperature reliability, and has a suitable optical anisotropy, a suitable dielectric anisotropy, and a relatively high clearing point, and is environmentally friendly.Type: ApplicationFiled: April 21, 2016Publication date: May 3, 2018Applicant: JIANGSU HECHENG DISPLAY TECHNOLOGY CO., LTD.Inventors: Wenyang MA, Wenming HAN, Haibin XU, Wenquan DING, Pengfei LI, Yunyun LIU, Di HE, Lifang YAO, Heming ZHANG
-
Publication number: 20180105747Abstract: Provided is a liquid crystal composition, comprising: one or more compounds of general formula I accounting for 1-30% of the total weight of the liquid crystal composition; one or more compounds of general formula II accounting for 1-30% of the total weight of the liquid crystal composition; one or more compounds of general formula III accounting for 1-20% of the total weight of the liquid crystal composition; and one or more compounds of general formula IV accounting for 30-80% of the total weight of the liquid crystal composition. The liquid crystal composition has at least one of the following properties: a large specific resistance, a high voltage holding ratio, a suitable optical anisotropy, a large dielectric anisotropy, a small viscosity, a low threshold voltage, etc., and is also green and environmentally friendly.Type: ApplicationFiled: April 21, 2016Publication date: April 19, 2018Applicant: JIANGSU HECHENG DISPLAY TECHNOLOGY CO., LTD.Inventors: Yunyun LIU, Wenming HAN, Wenquan DING, Pengfei LI, Haibin XU, Lifang YAO, Di HE, Wenyang MA, Heming ZHANG, Junqiang ZHANG
-
Publication number: 20180037818Abstract: A liquid crystal composition comprises a compound of general formula I serving as a first component; a compound of general formula II-1 and/or general formula II-2 serving as a second component; a compound of general formula III serving as a third component; a compound of general formula IV serving as a fourth component; a compound of general formula V serving as a fifth component; and a compound of general formula VI serving as a sixth component. The liquid crystal composition has at least one characteristic among the characteristics of a large dielectric anisotropy, a large optical anisotropy, a high voltage holding ratio and a low threshold voltage and the like, and is suitable to be used in a liquid crystal display device. Additionally, a liquid crystal display device comprising the liquid crystal composition is also provided.Type: ApplicationFiled: April 21, 2016Publication date: February 8, 2018Inventors: HUIJUAN DAI, WENMING HAN, WENQUAN DING, PENGFEI LI, HAIBIN XU, DI HE, YUNYUN LIU, LIFANG YAO, WENYANG MA, DINGFU MA, HEMING ZHANG
-
Publication number: 20170357631Abstract: One or more computers receive input indicative of multiple files to be analyzed together, by performing one or more predetermined actions, using the contents (e.g. strings of text) of a corresponding one or more structures. The one or more structures are identified by the presence in each file, of corresponding names. The one or more structures are normally written into the files for use by an application program to layout the contents therein in a structured manner. The one or more computers are programmed to automatically parse each file, to identify therein the one or more layout structures e.g. based on the presence in each file of corresponding names of layout structures. After parsing, the one or more computer(s) perform the one or more predetermined actions, to obtain an output structure that holds the results based on the contents of each layout structure identified in each file.Type: ApplicationFiled: June 23, 2017Publication date: December 14, 2017Applicant: Oracle International CorporationInventors: Anish Desai, Lifang Yao, Sharad Bhardwaj
-
Patent number: 9690770Abstract: One or more computers receive input indicative of multiple files to be analyzed together, by performing one or more predetermined actions, using the contents (e.g. strings of text) of a corresponding one or more structures. The one or more structures are identified by the presence in each file, of corresponding names. The one or more structures are normally written into the files for use by an application program to layout the contents therein in a structured manner. The one or more computers are programmed to automatically parse each file, to identify therein the one or more layout structures e.g. based on the presence in each file of corresponding names of layout structures. After parsing, the one or more computer(s) perform the one or more predetermined actions, to obtain an output structure that holds the results based on the contents of each layout structure identified in each file.Type: GrantFiled: May 31, 2011Date of Patent: June 27, 2017Assignee: ORACLE INTERNATIONAL CORPORATIONInventors: Anish Desai, Lifang Yao, Sharad Bhardwaj
-
Publication number: 20120311426Abstract: One or more computers receive input indicative of multiple files to be analyzed together, by performing one or more predetermined actions, using the contents (e.g. strings of text) of a corresponding one or more structures. The one or more structures are identified by the presence in each file, of corresponding names. The one or more structures are normally written into the files for use by an application program to layout the contents therein in a structured manner. The one or more computers are programmed to automatically parse each file, to identify therein the one or more layout structures e.g. based on the presence in each file of corresponding names of layout structures. After parsing, the one or more computer(s) perform the one or more predetermined actions, to obtain an output structure that holds the results based on the contents of each layout structure identified in each file.Type: ApplicationFiled: May 31, 2011Publication date: December 6, 2012Applicant: Oracle International CorporationInventors: Anish Desai, Lifang Yao, Sharad Bhardwaj