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公开(公告)号：US20190318695A1
公开(公告)日：2019-10-17
申请号：US16469892
申请日：2017-11-08
Applicant: SOUTH CHINA NORMAL UNIVERSITY , SHENZHEN GUOHUA OPTOELECTRONICS CO., LTD. , ACADEMY OF SHENZHEN GUOHUA OPTOELECTRONICS
Inventor： Guofu ZHOU , Li WANG , Pengfei BAI , Zichuan YI
Abstract: A device and method for eliminating an image border of electrophoretic electronic paper includes the following steps: S1, acquiring gray-scale driving waveform information and gray-scale position information, wherein the driving waveform information comprises a level value and a duration corresponding thereof; S2, outputting regulation waveform information based on an termination level value of a first gray scale, a level duration and a starting level value of a second gray scale, wherein the regulation waveform information comprises a level value, an embedding time and an embedding position of a waveform; and S3, modifying the gray-scale driving waveform information based on the regulation waveform information, and controlling an output of a drive electrode based on the modified gray-scale driving waveform information. By using the device and method, an impact of the fringe electric field on movement of electronic paper micro-capsules is eliminated, thus effectively reducing border ghosting.
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公开(公告)号：US20190185336A1
公开(公告)日：2019-06-20
申请号：US16094939
申请日：2018-03-15
Applicant: South China Normal University
Inventor： Ruqiang Huang , Qian Wang , Guanghua Wang , Jinghui Wang , Linlin Gao , Jingwen Zhang
IPC: C01F17/00
CPC classification number: C01F17/0081 , C01P2002/82 , C01P2002/88
Abstract: The disclosure discloses cerium sulfate chelated sulfur dioxide, a preparation method and a use thereof. The cerium sulfate chelated sulfur dioxide has a molecular formula of Ce[SO4][SO2].2H2O. It is a white crystal and the preparation method thereof may comprise the following steps: adding anhydrous cerium sulfate to dilute sulfuric acid with stirring for dissolvation; adding a solvent followed by refluxing at 45-50° C. for 2.0-2.5 h; heating the reaction product to remove the solvent, cooling to 20° C. or lower, and adding dilute sulfuric acid to allow precipitation of all crystals; cooling down the product followed by suction filtration, washing the obtained crystals by the solvent, so that crude cerium sulfate chelated sulfur dioxide can be obtained. The solubility of the cerium sulfate chelated sulfur dioxide of the disclosure has been significantly improved compared to the anhydrous cerium sulfate. The obtained solution is colorless and transparent, so that the cerium sulfate chelated sulfur dioxide can be used as a better titrant with wide application and supreme performance.
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83.发明授权公开(公告)号：US09779672B2
公开(公告)日：2017-10-03
申请号：US15123970
申请日：2014-03-06
Applicant: South China Normal University , Shenzhen Guohua Optoelectronics Co., Ltd. , Shenzhen Guohua Optoelectronics Institute
Inventor： Guofu Zhou , Fahong Li , Robert Andrew Hayes
CPC classification number: G09G3/348 , G02B26/005 , G09G3/2007
Abstract: An oil puncture controlled starting system for an EFD apparatus and manufacturing method therefor, wherein the EFD display structure comprises a base arranged below a lower electrode, and the base is provided with a step, such that a first liquid has a first thickness outside the step and a second thickness on the step, which is less than the first thickness, such a thickness difference renders the first liquid on the step to be punctured by a second liquid firstly when a lower voltage is applied between a upper electrode and the lower electrode, and the first liquid is pushed by the second liquid to move from a first area to a second area.
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84.发明申请公开(公告)号：US20160035837A1
公开(公告)日：2016-02-04
申请号：US14767301
申请日：2014-03-25
Applicant: SOUTH CHINA NORMAL UNIVERSITY
Inventor： Kunyuan Xu
CPC classification number: H01L29/2003 , H01L29/778 , H03B19/14
Abstract: A frequency multiplier based on a low dimensional semiconductor structure, including an insulating substrate layer, a semiconductor conducting layer arranged on the surface of the insulating substrate layer, an insulating protective layer arranged on the surface of the semiconductor conducting layer, an insulating carving groove penetrating the semiconductor conducting layer, an inlet electrode arranged on the side surface of the semiconductor conducting layer, and an outlet electrode arranged on the side surface corresponding to the access electrode is provided. The semiconductor conducting layer comprises two two-dimensional, quasi-one-dimensional, or one-dimensional current carrying channels near to and parallel to each other. The frequency multiplier has advantages that the structure is simple, the process is easy to implement, no extra filter circuit needs to be added, dependence on material characteristics is little, and the selection range of materials is wide.
Abstract translation: 基于低维半导体结构的倍频器，包括绝缘基板层，布置在绝缘基板层的表面上的半导体导电层，布置在半导体导电层的表面上的绝缘保护层，穿透 设置半导体导电层，布置在半导体导电层的侧表面上的入口电极和布置在与存取电极相对应的侧表面上的出口电极。 半导体导电层包括彼此靠近并且彼此平行的两个二维，准一维或一维载流通道。 倍频器具有结构简单，易于实现的优点，不需要添加额外的滤波电路，材料特性依赖性小，材料选择范围广。
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公开(公告)号：US20150340551A1
公开(公告)日：2015-11-26
申请号：US14130624
申请日：2012-12-26
Applicant: South China Normal University
Inventor： Ting Mei , Naiyin Wang , Hao Li , Lei Wan
CPC classification number: H01L33/06 , H01L33/14 , H01L33/145 , H01S5/0421 , H01S5/2009 , H01S5/3054 , H01S5/34333 , H01S5/34346 , H01S2301/17
Abstract: The present invention discloses an epiaxial structure for semiconductor light-emitting device, comprising an electron injection region, a hole injection region, a multi-quantum well active region, a potential barrier layer for blocking carriers, and one or more band edge shaping layers. The doping type and/or doping concentration of said band edge shaping layers are different from those of the adjacent layers. It may trim the band edge shape of the semiconductor energy band through the local built-in electric field formed as a result of adjusting the doping type, doping concentration and/or layer thickness thereof, such that the carriers in the multi-quantum well active region are distributed uniformly, the overall Auger recombination is decreased, and the effective potential barrier height of the potential barrier layer for blocking carriers is increased to reduce the drain current formed by carriers overflowing out of the multi-quantum well active region, thereby improving internal quantum efficiency. The present invention further discloses a semiconductor light-emitting device that employs said epiaxial structure, which similarly achieves the effects of reduced Auger recombination and/or decreased drain current through the trimming of the band edge shape of the energy band structure by the local built-in electric field, thereby improving internal quantum efficiency of the device.
Abstract translation: 本发明公开了一种半导体发光器件的双轴结构，包括电子注入区，空穴注入区，多量子阱有源区，用于阻挡载流子的势垒层和一个或多个带边成形层。 所述带边缘成形层的掺杂类型和/或掺杂浓度与相邻层的掺杂类型和/或掺杂浓度不同。 其可以通过调整掺杂类型，掺杂浓度和/或层厚度而形成的局部内置电场来修整半导体能带的带边缘形状，使得多量子阱活性中的载流子 区域均匀分布，整个俄歇复合减小，阻挡载流子的势垒层的有效势垒高度增加，以减少由多量子阱有源区溢出的载流子形成的漏极电流，从而改善内部 量子效率。 本发明还公开了采用所述的双轴结构的半导体发光器件，其类似地实现了通过局部内置结构的能带结构的带边缘形状的修整来减小俄歇复合和/或降低的漏极电流的效果， 在电场中，从而提高器件的内部量子效率。
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Patent Agency Ranking
86.发明公开公开(公告)号：US20240256745A1
公开(公告)日：2024-08-01
申请号：US18564244
申请日：2021-08-11
Inventor： Dong YUAN , Wei LIU , Alexander Victor HENZEN , Jan GROENEWOLD , Mohammad Khorsand AHMADI , Hans Markus WYSS , Jacob Marinus Jan DEN TOONDER , Guofu ZHOU
IPC: G06F30/28
CPC classification number: G06F30/28
Abstract: A method and a system for analyzing a transient current of a non-polar liquid, and an apparatus are disclosed. The method includes: measuring a transient current of a to-be-detected device to obtain a transient current reference curve; determining experimental parameters of a first influencing factor in the to-be-detected device according to the transient current reference curve and preset equations, and measuring experimental parameters of a second influencing factor in the device; constructing a transient current reference model according to the experimental parameters of the first and second influencing factors and a preset current model; adjusting parameters of the first and/or second influencing factor in the transient current reference model to obtain a plurality of transient current models; and calculating corresponding transient current change data according to the transient current models to construct and output a plurality of transient current curves.
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公开(公告)号：US20240193788A1
公开(公告)日：2024-06-13
申请号：US18496532
申请日：2023-10-27
Applicant: SOUTH CHINA NORMAL UNIVERSITY
Inventor： Xiaoyu TANG , Qunyuan CHEN
IPC: G06T7/162
CPC classification number: G06T7/162 , G06T2207/10028 , G06T2207/20021 , G06T2207/20076 , G06T2207/20084 , G06T2207/20221 , G06T2207/30196 , G06T2207/30261
Abstract: Disclosed are a method, device, computer system for detecting pedestrians based on 3D point clouds. The method includes: obtaining the spatial radar point cloud data of area to be detected; dividing the spatial radar point cloud data to obtain a plurality of 3D voxel grid cells according to a preset unit of voxel; encoding the plurality of 3D voxel grid cells and obtaining the voxel encoded data of the plurality of radar point cloud data; obtaining a first feature map and a second feature map based on a predetermined sparse convolutional backbone network and self-attention transformation network; and performing fusing processing for a fused feature map to input into a predetermined pedestrian detection model for pedestrian detection to obtain the pedestrian detection information of the area to be detected. The present disclosure enables more comprehensive pedestrian detection in the area to be detected with improved accuracy.
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88.发明授权公开(公告)号：US11740129B2
公开(公告)日：2023-08-29
申请号：US17298615
申请日：2020-03-30
Applicant: SOUTH CHINA NORMAL UNIVERSITY
Inventor： Xiaoxu Lv , Chengxin Zhou , Liyun Zhong , Qinwen Ning , Shengde Liu
IPC: G01J3/45 , G02F1/13363 , G01J3/02 , G01J3/12
CPC classification number: G01J3/45 , G01J3/0224 , G01J3/0229 , G01J3/0237 , G01J3/12 , G02F1/133638 , G01J2003/1291
Abstract: A differential interference imaging system capable of rapidly changing shear direction and amount includes: a light source (101), a filter (102), a polarizer (103), a sample stage (104), an infinite imaging microobjective (105), a tube lens (106), a shear component, an analyzer (113), and an image sensor (114). After the light intensity and a polarization direction is adjusted, the linearly polarized light passes through a transparent sample, to be collected by the infinite imaging microobjective (105) and to implement imaging through the tube lens (106). An imaging beam is divided into two linearly polarized light fields which are perpendicular to each other in the polarization directions and have tiny shear amount, then they are further combined into an interference light filed by the analyzer (103) to form a differential interference image in the image sensor (114). The system may be flexibly assembled, is simple in structure and easy to implement.
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公开(公告)号：US20230183524A1
公开(公告)日：2023-06-15
申请号：US17767603
申请日：2020-12-29
Applicant: SOUTH CHINA NORMAL UNIVERSITY
Inventor： Weishan LI , Zhibin JIANG , Lidan XING , Youhao LIAO , Shiyu CHEN , Xiying JIAN , Jinxia HUANG
IPC: C09D179/02 , H01M50/449 , H01M50/426 , H01M50/417 , H01M10/052 , H01M4/13
CPC classification number: C09D179/02 , H01M50/449 , H01M50/426 , H01M50/417 , H01M10/052 , H01M4/13
Abstract: The present disclosure relates to the technical field of batteries, and specifically relates to a polyamine composite material and a preparation method therefor, a slurry, a separator, an electrode sheet, and a lithium-sulfur battery containing the same. The polyamine composite material comprises a carboxylated carbon-based material serving as a substrate and a polyamine serving as an outer surface layer, and the polyamine is uniformly and smoothly coated on the outer side surface and/or the inner pore surface of the carboxylated carbon-based material. The material is rich in amino groups and is uniform and stable, can be used in the lithium-sulfur battery, and can effectively adsorb lithium polysulfide during a long cycle process.
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公开(公告)号：US20230098095A1
公开(公告)日：2023-03-30
申请号：US17889703
申请日：2022-08-17
Applicant: South China Normal University
Inventor： Wei GAO , Ying HUANG , Mengmeng YANG , Jingbo LI
IPC: H01L31/109 , H01L31/0232 , H01L31/0296 , H01L31/0304 , H01L31/0352 , H01L31/0224 , H01L31/18
Abstract: The present disclosure provides a photodiode based on a stannous selenide sulfide nanosheet/GaAs heterojunction and a preparation method and use thereof. The photodiode comprises a structure of the stannous selenide sulfide nanosheet/GaAs heterojunction, forming Au electrodes through thermal vapor deposition on the stannous selenide sulfide nanosheet and GaAs, respectively, and conducting an annealing treatment in a protective gas at a temperature in a range of 150-250° C. The heterojunction is formed by transferring the stannous selenide sulfide nanosheet to a GaAs window, and the GaAs window is obtained by depositing a medium layer film on GaAs and etching the medium layer through lithography and an etchant.
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