Patents by Inventor Lijun Zhao
Lijun Zhao 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: 11386690Abstract: A fingerprint identification module and a driving method therefor, and a display apparatus. The fingerprint identification module includes a base substrate and a plurality of fingerprint identification regions located on the base substrate, each fingerprint identification region includes a plurality of receiving electrodes, a piezoelectric material layer and a plurality of driving electrodes; and the plurality of receiving electrodes, the piezoelectric material layer and the plurality of driving electrodes form a plurality of ultrasonic sensors.Type: GrantFiled: August 21, 2020Date of Patent: July 12, 2022Assignee: BOE Technology Group Co., Ltd.Inventors: Xiufeng Li, Yingming Liu, Haisheng Wang, Xue Dong, Yuzhen Guo, Lijun Zhao, Chenyang Zhang, Yaqian Ji, Yanling Han, Peixiao Li
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Patent number: 11373386Abstract: A device for identifying a pattern over a first surface includes a photosensitive layer, and a light-guiding layer disposed between the photosensitive layer and the first surface. The photosensitive layer includes a plurality of photosensitive elements, each configured to convert incident light into an electrical signal. The light-guiding layer includes a plurality of light-guiding units, each positionally corresponding to one of the plurality of photosensitive elements. Each light-guiding unit includes a plurality of light-transmitting portions, each configured to guide a light beam reflected from a feature of the pattern positionally corresponding thereto to transmit therethrough and reach one of the plurality of photosensitive elements corresponding to the each of the plurality of light-guiding units. The device can be used for identification of fingerprint, as well as other biometric or non-biometric features, and has a reduced thickness and an improved accuracy for pattern identification.Type: GrantFiled: August 13, 2018Date of Patent: June 28, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Pinchao Gu, Haisheng Wang, Chunwei Wu, Yingming Liu, Rui Xu, Changfeng Li, Lijun Zhao, Yanan Jia, Yuzhen Guo, Yunke Qin
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Patent number: 11361576Abstract: A circuit for generating and detecting ultrasonic sensing signals is provided. A piezoelectric device having a transmitting electrode and a receiving electrode is coupled to a biasing-and-sampling sub-circuit configured to set different bias voltages to the receiving electrode. The piezoelectric device is configured to transmit an ultrasonic signal upon applying an exciting pulse signal to the transmitting electrode and alternatively to generate a voltage signal at the receiving electrode upon receiving an echo signal based on the ultrasonic signal. A signal-collecting sub-circuit is coupled to the receiving electrode to determine a first sampling voltage based on the voltage signal at the receiving electrode in a first sampling period and a second sampling voltage based on the voltage signal at the receiving electrode in a second sampling period. An output sub-circuit is coupled to the signal-collecting sub-circuit for outputting the first sampling voltage and the second sampling voltage at a same time.Type: GrantFiled: May 21, 2019Date of Patent: June 14, 2022Assignee: BOE Technology Group Co., Ltd.Inventors: Xiufeng Li, Yingming Liu, Xiaoliang Ding, Lijun Zhao, Haisheng Wang, Yanling Han
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Patent number: 11341883Abstract: Disclosed are a display device and a method for adjusting its display brightness. The display device includes a display screen and an ambient light sensor in the display screen, wherein the ambient light sensor includes a photodeformable element, and the photodeformable element includes a photodeformable material layer; and the photodeformable element is configured to deform in response to a change in ambient light to obtain output of the ambient light sensor. The ambient light sensor has a simple structure and is easy to be made and to be combined with the display screen.Type: GrantFiled: January 31, 2018Date of Patent: May 24, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yanan Jia, Xue Dong, Jing Lv, Haisheng Wang, Chun Wei Wu, Yingming Liu, Xueyou Cao, Rui Xu, Changfeng Li, Lijun Zhao, Yanling Han, Yuzhen Guo, Pinchao Gu, Yunke Qin
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Patent number: 11341766Abstract: An optical structure, a display substrate and a display device are provided. The optical structure includes a first medium layer being transparent and an opaque layer which is arranged on the first medium layer and includes a plurality of vias. The optical structure is configured to allow light rays passing through each of the plurality of via to project to a corresponding light ray receiving area respectively.Type: GrantFiled: August 14, 2018Date of Patent: May 24, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Pinchao Gu, Xue Dong, Haisheng Wang, Yingming Liu, Rui Xu, Changfeng Li, Yuzhen Guo, Lijun Zhao, Yanan Jia, Yunke Qin
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Patent number: 11328527Abstract: The present disclosure provides an ultrasonic fingerprint sensor, a display substrate, a driving method thereof and a display device. The ultrasonic fingerprint sensor includes: a base substrate; a driving structure provided on the base substrate and configured to transmit an ultrasonic signal; a receiving structure provided on the base substrate and configured to receive the ultrasonic signal reflected by a finger, and convert the ultrasonic signal into an electrical signal for determining fingerprint information, the driving structure and the receiving structure are provided in a same plane. Since the driving structure and the receiving structure of the ultrasonic fingerprint sensor of the present disclosure are in a same plane, the driving structure can be closer to the touch body (for example, a finger), which is advantageous for the ultrasonic waves generated by the driving structure to reach the finger to improve the touch accuracy.Type: GrantFiled: February 12, 2018Date of Patent: May 10, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Pinchao Gu, Xue Dong, Haisheng Wang, Chunwei Wu, Yingming Liu, Rui Xu, Changfeng Li, Yanan Jia, Yuzhen Guo, Yunke Qin, Lijun Zhao
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Publication number: 20220117725Abstract: An intraocular lens implanter and a preloaded type intraocular lens implantation device, which can improve the operational reliability of the injection member so as to improve the operational reliability of rolling or folding of the intraocular lens in an expected direction. In the intraocular lens implanter the inner cavity of the implantation head is provided with a guide portion, where the guide portion has a shape approaching the movement route of the push pin from rear to front, so that the push pin can push the movable piece of the pressing plate on the guide portion, and the movable piece applies downward force to the push pin in turn, thereby the push pin performs the injection operation under the state that the head portion of the push pin keeps in contact with the lower surface of the inner cavity of the implantation head.Type: ApplicationFiled: January 30, 2019Publication date: April 21, 2022Inventors: Lijun Zhao, Jiangbing Xie
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Patent number: 11301662Abstract: The present disclosure is related to an ultrasonic fingerprint detection assembly. The ultrasonic fingerprint detection assembly may include an ultrasonic fingerprint detection circuit and a living body detection circuit. The living body detection circuit may be configured to carry out living body detection at a rest stage of the ultrasonic fingerprint detection circuit.Type: GrantFiled: June 29, 2018Date of Patent: April 12, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yuzhen Guo, Haisheng Wang, Chunwei Wu, Yingming Liu, Lijun Zhao, Wei Liu, Changfeng Li, Rui Xu, Yanan Jia, Yunke Qin, Pinchao Gu, Xue Dong
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Patent number: 11263423Abstract: At least one embodiment of the present disclosure provides a fingerprint identification structure and a display device. At least one embodiment of the present disclosure provides a fingerprint identification structure, including: an ultrasonic emission component including a plurality of ultrasonic emission units arranged in a two-dimensional array in directions parallel to a plane; and an ultrasonic detection component including a plurality of ultrasonic detection units arranged in a two-dimensional array in the directions parallel to the plane. The ultrasonic emission component and the ultrasonic detection component are two independent structures, and an orthographic projection of at least one ultrasonic detection unit on the plane is included between orthographic projections of two adjacent ones of the plurality of ultrasonic emission units on the plane.Type: GrantFiled: October 17, 2019Date of Patent: March 1, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yuzhen Guo, Yingming Liu, Haisheng Wang, Lijun Zhao
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Publication number: 20220037585Abstract: Embodiments of the present disclosure provide a flexible acoustic-electric substrate and a preparation method thereof, and a flexible acoustic-electric device. The preparation method of a flexible acoustic-electric substrate includes: forming a flexible substrate; forming a plurality of piezoelectric components on the flexible substrate; and forming a plurality of chambers on the flexible substrate in a one-to-one correspondence relationship with the plurality of piezoelectric components, and the plurality of chambers are located on a side of the flexible substrate away from the plurality of piezoelectric components.Type: ApplicationFiled: May 19, 2020Publication date: February 3, 2022Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yanling HAN, Xue DONG, Haisheng WANG, Yingming LIU, Lijun ZHAO, Yuzhen GUO, Peixiao LI, Yaqian JI, Chenyang ZHANG, Xiufeng LI
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Publication number: 20220036027Abstract: A fingerprint identification module and a driving method therefor, and a display apparatus. The fingerprint identification module includes a base substrate and a plurality of fingerprint identification regions located on the base substrate, each fingerprint identification region includes a plurality of receiving electrodes, a piezoelectric material layer and a plurality of driving electrodes; and the plurality of receiving electrodes, the piezoelectric material layer and the plurality of driving electrodes form a plurality of ultrasonic sensors.Type: ApplicationFiled: August 21, 2020Publication date: February 3, 2022Applicant: BOE Technology Group Co., Ltd.Inventors: Xiufeng Li, Yingming Liu, Haisheng Wang, Xue Dong, Yuzhen Guo, Lijun Zhao, Chenyang Zhang, Yaqian Ji, Yanling Han, Peixiao Li
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Patent number: 11238261Abstract: An ultrasonic fingerprint recognition module is described that includes sensing units distributed in the form of array, where the sensing units include: a receiving electrode layer having a plurality of receiving electrodes distributed in the form of array; a piezoelectric material layer disposed on one side of the receiving electrode layer; an emission electrode layer disposed on a side of the piezoelectric material layer distal to the receiving electrode layer, and including a plurality of rows of emission electrodes; a selection circuit having an input terminal which is connected with an excitation signal and an output terminal which is connected with the emission electrode for selecting to transmit the excitation signal to the plurality of emission electrodes; and a pixel receiving circuit connected to the receiving electrode layer that receives a fingerprint signal.Type: GrantFiled: June 29, 2020Date of Patent: February 1, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Xiufeng Li, Haisheng Wang, Xiaoliang Ding, Pengpeng Wang, Yuzhen Guo, Lijun Zhao, Chenyang Zhang, Yaqian Ji, Yanling Han, Peixiao Li
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Patent number: 11215861Abstract: The present disclosure provides a display panel and a method for improving display quality of the display panel. The display panel includes a temperature control apparatus. Specifically, the temperature control apparatus includes a temperature sensor in a non-display area of the display panel for detecting a temperature of the display panel, a change-temperature component in a display area of the display panel for performing a change-temperature treatment on the display panel, and a controller electrically connected to the temperature sensor and the change-temperature component for controlling the change-temperature component to operate according to the temperature of the display panel.Type: GrantFiled: May 11, 2018Date of Patent: January 4, 2022Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Lijun Zhao
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Publication number: 20210406497Abstract: A circuit for generating and detecting ultrasonic sensing signals is provided. A piezoelectric device having a transmitting electrode and a receiving electrode is coupled to a biasing-and-sampling sub-circuit configured to set different bias voltages to the receiving electrode. The piezoelectric device is configured to transmit an ultrasonic signal upon applying an exciting pulse signal to the transmitting electrode and alternatively to generate a voltage signal at the receiving electrode upon receiving an echo signal based on the ultrasonic signal. A signal-collecting sub-circuit is coupled to the receiving electrode to determine a first sampling voltage based on the voltage signal at the receiving electrode in a first sampling period and a second sampling voltage based on the voltage signal at the receiving electrode in a second sampling period. An output sub-circuit is coupled to the signal-collecting sub-circuit for outputting the first sampling voltage and the second sampling voltage at a same time.Type: ApplicationFiled: May 21, 2019Publication date: December 30, 2021Applicant: BOE Technology Group Co., Ltd.Inventors: Xiufeng Li, Yingming Liu, Xiaoliang Ding, Lijun Zhao, Haisheng Wang, Yanling Han
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Publication number: 20210403356Abstract: The present disclosure relates to a bacterium-alga coupled sewage treatment device based on energy recycling and a use method thereof. The device comprises a pretreatment device, a photobioreactor, an alga separation apparatus, a continuous flow bioreactor and a secondary sedimentation tank which are sequentially connected in order, the pretreatment device being connected to a municipal sewage inlet pipe, the photobioreactor being connected to a carbon dioxide gas charging device through a gas filling pipeline, one part of a sludge thickening tank being connected to the secondary sedimentation tank, the other part thereof being connected to remaining sludge of the pretreatment device, carbon dioxide generated from the sludge which flows through the thickening tank and is thermally-hydrolyzed and anaerobically-acidified being connected to the photobioreactor through a gas inlet pipeline, and the alga separation apparatus being further connected to a filter press.Type: ApplicationFiled: March 31, 2020Publication date: December 30, 2021Inventors: Yong JIANG, Kuixiao LI, Wei WANG, Yu BAI, Jiawei WANG, Ye LI, Keming WANG, Lijun ZHAO
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Publication number: 20210392867Abstract: An intelligent pesticide spraying robot self-adaptive to terrain of mountain land is provided. Walking mechanisms are respectively connected to both side ends of a chassis. A pesticide spraying mechanism includes rotary drive mechanisms respectively connected to both sides of the rear end of the chassis, telescopic spray boom mechanisms correspondingly connected to the rotary drive mechanisms, rotary nozzle mechanisms correspondingly connected to the telescopic spray boom mechanisms, a liquid pesticide storage box fixed to the top of the chassis, a first water pump fixed in the liquid pesticide storage box, and first water pipes in communication with the first water pump and the rotary nozzle mechanisms. A control chip of a control identification mechanism is communicatively connected to the walking mechanisms, the rotary drive mechanisms, the telescopic spray boom mechanisms, the rotary nozzle mechanisms, the first water pump, a front-end camera, side-end cameras and ultrasonic sensors respectively.Type: ApplicationFiled: November 11, 2020Publication date: December 23, 2021Applicant: CHONGQING UNIVERSITY OF ARTS AND SCIENCESInventors: Lijun ZHAO, Zihan WANG, Yang YU, Qiang LI, Chenglin WANG, Cheng LV, Pengcheng LIN, Chunjiang LI, Yinan TIAN, Naifu ZHANG, Qi LIAO, Lishi JI, Boxin LI
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Publication number: 20210365704Abstract: A device for identifying a pattern over a first surface includes a photosensitive layer, and a light-guiding layer disposed between the photosensitive layer and the first surface. The photosensitive layer includes a plurality of photosensitive elements, each configured to convert incident light into an electrical signal. The light-guiding layer includes a plurality of light-guiding units, each positionally corresponding to one of the plurality of photosensitive elements. Each light-guiding unit includes a plurality of light-transmitting portions, each configured to guide a light beam reflected from a feature of the pattern positionally corresponding thereto to transmit therethrough and reach one of the plurality of photosensitive elements corresponding to the each of the plurality of light-guiding units. The device can be used for identification of fingerprint, as well as other biometric or non-biometric features, and has a reduced thickness and an improved accuracy for pattern identification.Type: ApplicationFiled: August 13, 2018Publication date: November 25, 2021Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Pinchao GU, Haisheng WANG, Chunwei WU, Yingming LIU, Rui XU, Changfeng LI, Lijun ZHAO, Yanan JIA, Yuzhen GUO, Yunke QIN
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Publication number: 20210357616Abstract: An optical structure, a display substrate and a display device are provided. The optical structure includes a first medium layer being transparent and an opaque layer which is arranged on the first medium layer and includes a plurality of vias. The optical structure is configured to allow light rays passing through each of the plurality of via to project to a corresponding light ray receiving area respectively.Type: ApplicationFiled: August 14, 2018Publication date: November 18, 2021Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Pinchao GU, Xue DONG, Haisheng WANG, Yingming LIU, Rui XU, Changfeng LI, Yuzhen GUO, Lijun ZHAO, Yanan JIA, Yunke QIN
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Publication number: 20210347640Abstract: A method for removing ash from a solid carbon material: Reaction conditions are mild, and ash may be removed more effectively. The ash removing method comprises: S1) mixing an alkaline sub-molten salt medium and a solid carbonaceous material to be treated, heating so that alkali and ash in the solid carbonaceous material to be treated react in the alkaline sub-molten salt medium, and performing solid-liquid separation on a mixed slurry resulting from the reaction to obtain a first solid product and an alkali treatment solution, wherein in the alkaline sub-molten salt medium, the mass fraction of the alkali is greater than or equal to 50%; S2) using an acid solution to perform acid cleaning treatment on the first solid product, and performing solid-liquid separation again to obtain a second solid product and an acid cleaning solution.Type: ApplicationFiled: September 26, 2019Publication date: November 11, 2021Applicant: National Institute of Clean-and-Low-Carbon EnergyInventors: Lijun Zhao, Wenhua Li, Aiguo Chen, Fan Jin, Xiaolin Jiang, Huidong Liu, Yongfeng Xiao
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Publication number: 20210331204Abstract: A piezoelectric sensor assembly, a manufacturing method thereof, a display panel and an electronic device including the same are provided. The piezoelectric sensor assembly includes: a base substrate; a plurality of ultrasonic transducers, wherein a spacing area is provided between two adjacent ultrasonic transducers; and an acoustic matching layer, wherein the acoustic matching layer includes a plurality of acoustic matching areas, and an orthographic projection of at least one acoustic matching area on the base substrate falls into an orthographic projection of the ultrasonic transducer corresponding to the acoustic matching area on the base substrate, wherein an isolation cavity is provided between two adjacent acoustic matching areas.Type: ApplicationFiled: May 25, 2020Publication date: October 28, 2021Inventors: Chenyang ZHANG, Yingming LIU, Haisheng WANG, Peixiao LI, Xiufeng LI, Yuzhen GUO, Yanling HAN, Lijun ZHAO