Patents by Inventor Chuanwei ZHANG
Chuanwei ZHANG 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: 11946334Abstract: A flow splitting device for gas reverse circulation drilling, including: an upper joint for connecting with a double-wall drill pipe; an inner tube which is arranged in the upper joint and defines a first passageway in communication with an inner chamber of the double-wall drill pipe, a second passageway in communication with an annular space in the double-wall drill pipe formed between the inner tube and the upper joint; a lower joint, having an upper end fixedly connected with the upper joint and a lower end for connecting with a drill tool; and a flow guiding member provided between the upper joint and the lower joint. A flexible sealing mechanism is provided outside the upper joint. The flexible sealing mechanism extends radially outward relative to the upper joint and the lower joint to form a sealing contact with a wellbore wall.Type: GrantFiled: September 30, 2020Date of Patent: April 2, 2024Assignees: CHINA PETROLEUM & CHEMICAL CORPORATION, SINOPEC PETROLEUM ENGINEERING TECHNOLOGY SERVICE CO., LTD, SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD, DRILLING TECHNOLOGY RESEARCH INSTITUTE OF SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTDInventors: Chuanwei Zhao, Zhonghua Wu, Yanjun Zhou, Honglin Tang, Zhihe Liu, Xueliang Pei, Haoyu Sun, Zhenguo Su, Bo Kang, Hui Zhang, Huangang Zhu, Yongming Chen, Zhongshuai Chen
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Publication number: 20230350123Abstract: Provided are a backlight module, a display panel and a display apparatus. The backlight module includes a back plate, including a bottom plate and a frame surrounding the bottom plate; at least one light bar, fixed on an inner sidewall of the frame, wherein a gap is formed between an end portion of the light bar and the inner sidewall of the frame in an extension direction of the light bar; and a reflector sheet, disposed in the frame and on the bottom plate, wherein at least one first sidewall of the reflector sheet is provided with at least one first protrusion, the first protrusion being extended from the first sidewall on which the first protrusion is disposed towards an inner sidewall of the frame opposite to the first sidewall on which the first protrusion is disposed, and the first protrusion being disposed in the gap.Type: ApplicationFiled: June 4, 2021Publication date: November 2, 2023Inventors: Lugui Cui, Chuanwei Zhang, Xianrong Cheng
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Patent number: 11537003Abstract: Disclosed are a backlight module and a display device. An optical film includes a main body portion and at least one fixing portion connected to the main body portion, the main body portion is fixed to a light exit surface of a light guide plate, and the fixing portion is snap-fitted to a fixing surface of the light guide plate; the fixing portion is snap-fitted to the fixing surface of the light guide plate.Type: GrantFiled: September 20, 2021Date of Patent: December 27, 2022Assignees: K-Tronics (Suzhou) Technology Co., Ltd., BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.Inventors: Yufei Du, Yurong Cao, Chuanwei Zhang, Zhi Yin
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Patent number: 11372150Abstract: A backlight module and a displaying device. The backlight module comprises a backplane, a reflector plate and a light guide plate that are disposed in sequence, a light strip disposed on a first side of the light guide plate, and a plurality of positioning assemblies disposed at two ends of the first side of the light guide plate respectively, wherein each light guide assembly comprises a positioning element disposed on the backplane and a guide surface disposed at a corner of the first side of the light guide plate. The positioning assemblies are disposed on the first side, where the light strip is located, of the light guide plate, such that the light guide plate will be driven to move away from support members under a reactive force of the positioning elements when expanding.Type: GrantFiled: August 19, 2021Date of Patent: June 28, 2022Assignees: K-Tronics (Suzhou) Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Xianrong Cheng, Chuanwei Zhang
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Publication number: 20220155637Abstract: Disclosed are a backlight module and a display device. An optical film includes a main body portion and at least one fixing portion connected to the main body portion, the main body portion is fixed to a light exit surface of a light guide plate, and the fixing portion is snap-fitted to a fixing surface of the light guide plate; the fixing portion is snap-fitted to the fixing surface of the light guide plate.Type: ApplicationFiled: September 20, 2021Publication date: May 19, 2022Inventors: Yufei DU, Yurong CAO, Chuanwei ZHANG, Zhi YIN
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Publication number: 20220120953Abstract: A backlight module and a displaying device. The backlight module comprises a backplane, a reflector plate and a light guide plate that are disposed in sequence, a light strip disposed on a first side of the light guide plate, and a plurality of positioning assemblies disposed at two ends of the first side of the light guide plate respectively, wherein each light guide assembly comprises a positioning element disposed on the backplane and a guide surface disposed at a corner of the first side of the light guide plate. The positioning assemblies are disposed on the first side, where the light strip is located, of the light guide plate, such that the light guide plate will be driven to move away from support members under a reactive force of the positioning elements when expanding.Type: ApplicationFiled: August 19, 2021Publication date: April 21, 2022Inventors: Xianrong CHENG, Chuanwei ZHANG
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Patent number: 11143804Abstract: The present invention belongs to the field of optical detection devices, and specifically discloses a polarization modulator and a polarization measurement system, comprising a rotating compensator and a polarizer, in which the rotating compensator is a continuously rotating composite waveplate, the composite waveplate is composed of a plurality of single-waveplates of the same material, and the overall structure of the composite waveplate is determined by thicknesses and fast axis intersection angles of the respective single-waveplates according to the optimization design of the polarization characteristic transfer matrix of the polarization modulator. The polarization modulator of the invention has the advantages of simple structure, easy processing and a wide applicable wavelength range, and a wide-waveband polarization measurement system can be designed based on the polarization modulator, which is adapted to the requirements of wide-waveband precision polarization measurement.Type: GrantFiled: October 16, 2018Date of Patent: October 12, 2021Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Honggang Gu, Shiyuan Liu, Xiuguo Chen, Hao Jiang, Chuanwei Zhang
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Publication number: 20190361161Abstract: The present invention belongs to the field of optical detection devices, and specifically discloses a polarization modulator and a polarization measurement system, comprising a rotating compensator and a polarizer, in which the rotating compensator is a continuously rotating composite waveplate, the composite waveplate is composed of a plurality of single-waveplates of the same material, and the overall structure of the composite waveplate is determined by thicknesses and fast axis intersection angles of the respective single-waveplates according to the optimization design of the polarization characteristic transfer matrix of the polarization modulator. The polarization modulator of the invention has the advantages of simple structure, easy processing and a wide applicable wavelength range, and a wide-waveband polarization measurement system can be designed based on the polarization modulator, which is adapted to the requirements of wide-waveband precision polarization measurement.Type: ApplicationFiled: October 16, 2018Publication date: November 28, 2019Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Honggang GU, Shiyuan LIU, Xiuguo CHEN, Hao JIANG, Chuanwei ZHANG
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Patent number: 9785047Abstract: A device for measuring a large-area and massive scattered field in nanoscale. The device includes a polarization state generator disposed on an output optical path of a laser source, a polarization state analyzer operating to demodulate a polarized light beam emitted thereon, a first objective lens and a first lens disposed on an optical path of a sample stage, and a scanning mirror disposed on an optical path in front of or at the rear of the polarization state generator.Type: GrantFiled: June 30, 2015Date of Patent: October 10, 2017Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Shiyuan Liu, Weichao Du, Chuanwei Zhang, Yinyin Tan
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Publication number: 20160187248Abstract: A device for measuring a large-area and massive scattered field in nanoscale. The device includes a polarization state generator disposed on an output optical path of a laser source, a polarization state analyzer operating to demodulate a polarized light beam emitted thereon, a first objective lens and a first lens disposed on an optical path of a sample stage, and a scanning mirror disposed on an optical path in front of or at the rear of the polarization state generator.Type: ApplicationFiled: June 30, 2015Publication date: June 30, 2016Inventors: Shiyuan LIU, Weichao DU, Chuanwei ZHANG, Yinyin TAN
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Patent number: 9103667Abstract: An alignment method for optical axes of a composite waveplate includes rotating a rotatable waveplate, which rotates about a central axis with respect to a fixed waveplate, and adjusting the rotation angle thereof until the differences between the spectral parameters of the composite waveplate and ideal spectral parameters are smaller than preset values.Type: GrantFiled: July 25, 2014Date of Patent: August 11, 2015Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Shiyuan Liu, Honggang Gu, Xiuguo Chen, Chuanwei Zhang, Weiqi Li, Weichao Du
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Patent number: 9070091Abstract: A method for extracting a critical dimension of a semiconductor nanostructure. The method includes: 1) determining a value range for each parameter to be extracted, whereby generating an electronic spectra database, and employing training spectra and support vector machine (SVM) training networks for training of SVMs; 2) employing the SVMs after training to map measured spectra to yield a corresponding electronic spectra database; and 3) employing a searching algorithm to search for an optimum simulation spectrum in the corresponding electronic spectra database, simulation parameters corresponding to the simulation spectrum being the critical dimension of the semiconductor nanostructure to be extracted.Type: GrantFiled: January 31, 2013Date of Patent: June 30, 2015Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Shiyuan Liu, Jinlong Zhu, Chuanwei Zhang, Xiuguo Chen
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Publication number: 20150029507Abstract: An alignment method for optical axes of a composite waveplate includes rotating a rotatable waveplate, which rotates about a central axis with respect to a fixed waveplate, and adjusting the rotation angle thereof until the differences between the spectral parameters of the composite waveplate and ideal spectral parameters are smaller than preset values.Type: ApplicationFiled: July 25, 2014Publication date: January 29, 2015Inventors: Shiyuan LIU, Honggang GU, Xiuguo CHEN, Chuanwei ZHANG, Weiqi LI, Weichao DU
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Publication number: 20130325760Abstract: A method for extracting a critical dimension of a semiconductor nanostructure. The method includes: 1) determining a value range for each parameter to be extracted, whereby generating an electronic spectra database, and employing training spectra and support vector machine (SVM) training networks for training of SVMs; 2) employing the SVMs after training to map measured spectra to yield a corresponding electronic spectra database; and 3) employing a searching algorithm to search for an optimum simulation spectrum in the corresponding electronic spectra database, simulation parameters corresponding to the simulation spectrum being the critical dimension of the semiconductor nanostructure to be extracted.Type: ApplicationFiled: January 31, 2013Publication date: December 5, 2013Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Shiyuan LIU, Jinlong ZHU, Chuanwei ZHANG, Xiuguo CHEN