Patents by Inventor Qian Tian
Qian Tian 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: 11957022Abstract: A display panel includes a first base substrate, a plurality of light sources on the first base substrate, a second base substrate opposite to the first base substrate, a light conversion structure on the second base substrate, a plurality of extinction structures on a side of the light conversion structure facing the first base substrate, a first channel formed between any two adjacent extinction structures, a plurality of first optical structures on a side of the light conversion structure facing the first base substrate, wherein the plurality of first optical structures are respectively located in the first channels each between any two adjacent extinction structures, and a filler portion between the plurality of light sources and the plurality of first optical structures. The filler portion contains a material with a refractive index greater than that of a material of the first optical structure, and the extinction structure contains light-absorbing material.Type: GrantFiled: June 25, 2021Date of Patent: April 9, 2024Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Dejiang Zhao, Wei Huang, Yang Li, Yu Tian, Tianhao Lu, Qian Jin
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Publication number: 20220073428Abstract: Disclosed are a multifunctional cement hydration heat control material and a manufacturing method therefor. The cement hydration heat control material in is a comb polymer having three side chain structures, the three side chain structures are respectively a carboxyl group, a sugar alcohol group, and a polyether structure, and the main chain of the polymer is a carbon chain structure formed by free-radical polymerization of a double bond in a double bond compound monomer. The multifunctional cement hydration heat control material can achieve integration of cement hydration heat control performance, water reduction performance, and shrinkage reduction performance in a same molecule, can achieve control focusing on a performance by means of structural adjustment, does not need multi-component compounding during use, and is more convenient. The control material is non-toxic and water-soluble, can be made to have an appropriate concentration, and is convenient to use.Type: ApplicationFiled: November 14, 2019Publication date: March 10, 2022Inventors: Jiaping LIU, Rui WANG, Qian TIAN, Wenbin WANG, Lei LI, Yujiang WANG, Hua LI, Ting YAO, Yang CHU
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Patent number: 9470672Abstract: Disclosed is a method for testing the self-drying effect of a cement-based material, capable of testing the change in humidity of the cement-based material after the final setting until the Id stage of adding water, so as to reflect the water consumption therein and the self-drying course. In the time period after the final setting of the cement-based material until the 1 d stage of adding water and forming, the dew-point temperature inside the cement-based material is tested, and then the relative humidity inside the cement-based material is calculated using a formula. The present invention can test the change in humidity of the cement-based material after the final setting until the Id stage of adding water, so as to reflect the internal water consumption therein and the self-drying course.Type: GrantFiled: December 30, 2011Date of Patent: October 18, 2016Assignee: JIANGSU SOBUTE NEW MATERIALS CO., LTD.Inventors: Jiaping Liu, Qian Tian, Ting Yao, Yujiang Wang, Yujiang Wang, Hang Zhang, Jianye Zhang
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Patent number: 9389216Abstract: Disclosed is a method for testing the setting time of a cement-based material: testing the capillary negative pressure of a non-bleeding cement-based material, with the time at which the capillary negative pressure reaches a threshold value A as the initial setting time, and/or the time at which the capillary negative pressure reaches a threshold value B as the final setting time, wherein threshold value A is 8-10 kPa, and threshold value B is 54-56 kPa.Type: GrantFiled: December 30, 2011Date of Patent: July 12, 2016Assignee: SOBUTE NEW MATERIALS CO., LTD.Inventors: Qian Tian, Jiaping Liu, Hang Zhang, Yujiang Wang, Fei Guo, Jianye Zhang
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Patent number: 8933745Abstract: A transconductance-enhancing passive frequency mixer comprises a transconductance amplification stage, a frequency mixing stage, and an output transresistance amplifier. The transconductance amplification stage has a pre-amplification transconductance-enhancing structure, so that the transconductance is greatly enhanced, thereby obtaining the same transconductance value at a lower bias current. A radio-frequency current is modulated by the frequency mixing stage to generate an output mid-frequency current signal. The mid-frequency current signal passes through the transresistance amplifier, to form voltage output, and finally obtain a mid-frequency voltage signal. The transresistance amplifier has a transconductance-enhancing structure, thereby further reducing input impedance, and improving current utilization efficiency and port isolation. The frequency mixer has the characteristics of low power consumption, high conversion gain, good port isolation, and the like.Type: GrantFiled: May 29, 2012Date of Patent: January 13, 2015Assignee: Southeast UniversityInventors: Jianhui Wu, Xiao Shi, Chao Chen, Zhilin Liu, Qiang Zhao, Junfeng Wen, Xudong Wang, Chunfeng Bai, Qian Tian
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Publication number: 20140144217Abstract: Disclosed is a method for testing the self-drying effect of a cement-based material, capable of testing the change in humidity of the cement-based material after the final setting until the Id stage of adding water, so as to reflect the water consumption therein and the self-drying course. In the time period after the final setting of the cement-based material until the 1 d stage of adding water and forming, the dew-point temperature inside the cement-based material is tested, and then the relative humidity inside the cement-based material is calculated using a formula. The present invention can test the change in humidity of the cement-based material after the final setting until the Id stage of adding water, so as to reflect the internal water consumption therein and the self-drying course.Type: ApplicationFiled: December 30, 2011Publication date: May 29, 2014Applicant: Jiangsu Research Institute of Building Science Co., LTDInventors: Jiaping Liu, Qian Tian, Ting Yao, Yujiang Wang, Yujiang Wang, Hang Zhang, Jianye Zhang
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Publication number: 20140130620Abstract: Disclosed is a method for testing the setting time of a cement-based material: testing the capillary negative pressure of a non-bleeding cement-based material, with the time at which the capillary negative pressure reaches a threshold value A as the initial setting time, and/or the time at which the capillary negative pressure reaches a threshold value B as the final setting time, wherein threshold value A is 8-10 kPa, and threshold value B is 54-56 kPa.Type: ApplicationFiled: December 30, 2011Publication date: May 15, 2014Applicant: Jiangsu Sobute New Materials Co., LTD.Inventors: Qian Tian, Jiaping Liu, Hang Zhang, Yujiang Wang, Fei Guo, Jianye Zhang
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Publication number: 20130285715Abstract: A transconductance-enhancing passive frequency mixer comprises a transconductance amplification stage, a frequency mixing stage, and an output transresistance amplifier. The transconductance amplification stage has a pre-amplification transconductance-enhancing structure, so that the transconductance is greatly enhanced, thereby obtaining the same transconductance value at a lower bias current. A radio-frequency current is modulated by the frequency mixing stage to generate an output mid-frequency current signal. The mid-frequency current signal passes through the transresistance amplifier, to form voltage output, and finally obtain a mid-frequency voltage signal. The transresistance amplifier has a transconductance-enhancing structure, thereby further reducing input impedance, and improving current utilization efficiency and port isolation. The frequency mixer has the characteristics of low power consumption, high conversion gain, good port isolation, and the like.Type: ApplicationFiled: May 29, 2012Publication date: October 31, 2013Applicant: Southeast UniversityInventors: Jianhui Wu, Xiao Shi, Chao Chen, Zhilin Liu, Qiang Zhao, Junfeng Wen, Xudong Wang, Chunfeng Bai, Qian Tian
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Heterodyne interferometric optical fiber displacement sensor for measuring displacement of an object
Patent number: 5402230Abstract: A heterodyne interferometric optical fiber displacement sensor using a laser diode. The frequency and the intensity of the laser diode beam are periodically modulated by an injection current. The laser diode beam is routed to a rod lens via a first optical fiber, an optical fiber coupler, and a second optical fiber. The interference light resulting from the interference between the light reflected from the exit surface of the rod lens and the light reflected from an object surface is routed to a third optical fiber via the optical fiber coupler, which is then detected by a photodiode attached to the end of the third optical fiber. From the output of the photodiode, a given frequency component is extracted using a bandpass-filter. The extracted signal is converted into a pulse signal. The frequency change of the pulse signal (equivalent to a doppler frequency shift caused by the movement of the object surface) is accumulated using an electronic circuit.Type: GrantFiled: December 11, 1992Date of Patent: March 28, 1995Assignees: Tsinghua University, Akira Shimokohbe, Tokyo Seimitsu Co., Ltd.Inventors: Qian Tian, Enyao Zhang, Donglei Tang, Akira Shimokohbe, Masahiro Akahane, Kenji Sakai