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    SEMI-INSULATING SILICON CARBIDE MONOCRYSTAL AND METHOD OF GROWING THE SAME
    2.
    发明申请
    SEMI-INSULATING SILICON CARBIDE MONOCRYSTAL AND METHOD OF GROWING THE SAME 有权
    半绝缘碳化硅单晶及其生长方法

    公开(公告)号：US20130313575A1

    公开(公告)日：2013-11-28

    申请号：US13976351

    申请日：2011-12-06

    申请人： Xiaolong Chen ,  Chunjun Liu ,  Tonghua Peng ,  Longyuan Li ,  Bo Wang ,  Gang Wang ,  Wenjun Wang ,  Yu Liu

    发明人： Xiaolong Chen ,  Chunjun Liu ,  Tonghua Peng ,  Longyuan Li ,  Bo Wang ,  Gang Wang ,  Wenjun Wang ,  Yu Liu

    IPC分类号： H01L29/16 ,  H01L21/02

    CPC分类号： H01L29/1608 ,  C30B23/00 ,  C30B23/002 ,  C30B23/005 ,  C30B23/06 ,  C30B29/36 ,  H01L21/02529 ,  H01L29/435

    摘要： A semi-insulating silicon carbide monocrystal and a method of growing the same are disclosed. The semi-insulating silicon carbide monocrystal comprises intrinsic impurities, deep energy level dopants and intrinsic point defects. The intrinsic impurities are introduced unintentionally during manufacture of the silicon carbide monocrystal, and the deep energy level dopants and the intrinsic point defects are doped or introduced intentionally to compensate for the intrinsic impurities. The intrinsic impurities include shallow energy level donor impurities and shallow energy level acceptor impurities. A sum of a concentration of the deep energy level dopants and a concentration of the intrinsic point defects is greater than a difference between a concentration of the shallow energy level donor impurities and a concentration of the shallow energy level acceptor impurities, and the concentration of the intrinsic point defects is less than the concentration of the deep energy level dopants. The semi-insulating SiC monocrystal has resistivity greater than 1×105 Ω·cm at room temperature, and its electrical performances and crystal quality satisfy requirements for manufacture of microwave devices. The deep energy level dopants and the intrinsic point defects jointly serve to compensate the intrinsic impurities, so as to obtain a high quality semi-insulating single crystal.

    摘要翻译： 公开了一种半绝缘碳化硅单晶及其生长方法。 半绝缘碳化硅单晶包括固有杂质，深能级掺杂剂和固有点缺陷。 在碳化硅单晶的制造期间无意中引入固有杂质，并且有意地掺杂或引入深能级掺杂剂和固有点缺陷以补偿固有杂质。 本征杂质包括浅能级供体杂质和浅能级受体杂质。 深能级掺杂剂的浓度和本征点缺陷的浓度的总和大于浅能级供体杂质的浓度与浅能级受体杂质的浓度之间的差异， 内在点缺陷小于深能级掺杂剂的浓度。 半绝缘SiC单晶在室温下的电阻率大于1×105Ω·cm，其电性能和晶体质量满足微波器件制造要求。 深能级掺杂剂和固有点缺陷共同用于补偿固有杂质，从而获得高质量的半绝缘单晶。

    PROCESS FOR GROWING SILICON CARBIDE SINGLE CRYSTAL BY PHYSICAL VAPOR TRANSPORT METHOD AND ANNEALING SILICON CARBIDE SINGLE CRYSTAL IN SITU
    3.
    发明申请
    PROCESS FOR GROWING SILICON CARBIDE SINGLE CRYSTAL BY PHYSICAL VAPOR TRANSPORT METHOD AND ANNEALING SILICON CARBIDE SINGLE CRYSTAL IN SITU 有权
    通过物理蒸汽运输方法生产碳化硅单晶的方法和退火硅单晶在原子能中的应用

    公开(公告)号：US20130269598A1

    公开(公告)日：2013-10-17

    申请号：US13994306

    申请日：2011-11-11

    申请人： Xiaolong Chen ,  Bo Wang ,  Longyuan Li ,  Tonghua Peng ,  Chunjun Liu ,  Wenjun Wang ,  Gang Wang

    发明人： Xiaolong Chen ,  Bo Wang ,  Longyuan Li ,  Tonghua Peng ,  Chunjun Liu ,  Wenjun Wang ,  Gang Wang

    IPC分类号： C30B23/00 ,  C30B23/06

    CPC分类号： C30B23/002 ,  C30B23/06 ,  C30B29/36 ,  C30B33/02

    摘要： A technology for growing silicon carbide single crystals by PVT (Physical Vapor Transport) and a technology for in-situ annealing the crystals after growth is finished is provided. The technology can achieve real-time dynamic control of the temperature distribution of growth chamber by regulating the position of the insulation layer on the upper part of the graphite crucible, thus controlling the temperature distribution of growth chamber in real-time during the growth process according to the needs of the technology, which helps to significantly improve the crystal quality and production yield. After growth is finished, the inert gas pressure in growth chamber is raised and the temperature gradient of the growth chamber is reduced so that in-situ annealing the silicon carbide crystals can be carried out under a small one, which helps to reduce the stress between the crystal and the crucible lid as well as that in sublimation grown crystals to reduce the breakage ratio and improve the yield ratio during the subsequent fabrication process.

    摘要翻译： 提供了通过PVT（物理蒸气传输）生长碳化硅单晶的技术和用于在生长后原位退火晶体的技术。 该技术可以通过调节石墨坩埚上部绝缘层的位置来实现对生长室温度分布的实时动态控制，从而在生长过程中实时控制生长室的温度分布 满足技术需求，有利于显着提高晶体质量和产量。 生长完成后，生长室中的惰性气体压力升高，生长室的温度梯度降低，可以在较小的温度下进行碳化硅晶体的原位退火，有助于降低碳化硅晶体之间的应力 晶体和坩埚盖以及在升华中生长晶体以降低断裂比并在随后的制造过程中提高屈服比。

    Process for growing silicon carbide single crystal by physical vapor transport method and annealing silicon carbide single crystal in situ
    4.
    发明授权
    Process for growing silicon carbide single crystal by physical vapor transport method and annealing silicon carbide single crystal in situ 有权
    通过物理气相传输方法生长碳化硅单晶并原位退火碳化硅单晶的工艺

    公开(公告)号：US09340898B2

    公开(公告)日：2016-05-17

    申请号：US13994306

    申请日：2011-11-11

    申请人： Xiaolong Chen ,  Bo Wang ,  Longyuan Li ,  Tonghua Peng ,  Chunjun Liu ,  Wenjun Wang ,  Gang Wang

    发明人： Xiaolong Chen ,  Bo Wang ,  Longyuan Li ,  Tonghua Peng ,  Chunjun Liu ,  Wenjun Wang ,  Gang Wang

    IPC分类号： C30B23/06 ,  C30B23/00 ,  C30B29/36 ,  C30B33/02

    CPC分类号： C30B23/002 ,  C30B23/06 ,  C30B29/36 ,  C30B33/02

    摘要： A technology for growing silicon carbide single crystals by PVT (Physical Vapor Transport) and a technology for in-situ annealing the crystals after growth is finished is provided. The technology can achieve real-time dynamic control of the temperature distribution of growth chamber by regulating the position of the insulation layer on the upper part of the graphite crucible, thus controlling the temperature distribution of growth chamber in real-time during the growth process according to the needs of the technology, which helps to significantly improve the crystal quality and production yield. After growth is finished, the inert gas pressure in growth chamber is raised and the temperature gradient of the growth chamber is reduced so that in-situ annealing the silicon carbide crystals can be carried out under a small one, which helps to reduce the stress between the crystal and the crucible lid as well as that in sublimation grown crystals to reduce the breakage ratio and improve the yield ratio during the subsequent fabrication process.

    摘要翻译： 提供了通过PVT（物理蒸气传输）生长碳化硅单晶的技术和用于在生长后原位退火晶体的技术。 该技术可以通过调节石墨坩埚上部绝缘层的位置来实现生长室温度分布的实时动态控制，从而在生长过程中实时控制生长室的温度分布 满足技术需求，有利于显着提高晶体质量和产量。 生长完成后，生长室中的惰性气体压力升高，生长室的温度梯度降低，可以在较小的温度下进行碳化硅晶体的原位退火，有助于降低碳化硅晶体之间的应力 晶体和坩埚盖以及在升华中生长晶体以降低断裂比并在随后的制造过程中提高屈服比。

    Nonlinear optical device manufactured with 4H silicon carbide crystal
    5.
    发明授权
    Nonlinear optical device manufactured with 4H silicon carbide crystal 有权
    用4H碳化硅晶体制造的非线性光学器件

    公开(公告)号：US09500931B2

    公开(公告)日：2016-11-22

    申请号：US14370510

    申请日：2012-01-06

    申请人： Xiaolong Chen ,  Shunchong Wang ,  Tonghua Peng ,  Gang Wang ,  Chunjun Liu ,  Wenjun Wang ,  Shifeng Jin

    发明人： Xiaolong Chen ,  Shunchong Wang ,  Tonghua Peng ,  Gang Wang ,  Chunjun Liu ,  Wenjun Wang ,  Shifeng Jin

    IPC分类号： G02F1/355 ,  G02F1/35 ,  G02F1/361 ,  G02F1/39 ,  H01S3/23 ,  H01S3/00

    CPC分类号： G02F1/3551 ,  G02F1/353 ,  G02F1/355 ,  G02F1/361 ,  G02F1/39 ,  G02F2001/392 ,  H01S3/0064 ,  H01S3/0092 ,  H01S3/2391

    摘要： Provided is a nonlinear optical device manufactured with 4H silicon carbide crystal. The nonlinear optical crystal may be configured to alter at least a light beam (12) at a frequency to generate at least a light beam (16) at a further frequency different from the frequency. The nonlinear optical crystal comprises a 4H silicon carbide crystal (13). The nonlinear optical device is more compatible with practical applications in terms of outputting mid-infrared laser at high power and high quality and thus are more applicable in practice, because the 4H silicon carbide crystal has a relatively high laser induced damage threshold, a relatively broad transmissive band (0.38-5.9 μm and 6.6-7.08 μm), a relatively great 2nd-order nonlinear optical coefficient (d15=6.7 pm/V), a relatively great birefringence, a high thermal conductivity (490 Wm−1K−1), and a high chemical stability.

    摘要翻译： 提供了一种用4H碳化硅晶体制造的非线性光学器件。 非线性光学晶体可以被配置为以频率改变至少一个光束（12），以产生不同于频率的另外的频率的至少一个光束（16）。 非线性光学晶体包括4H碳化硅晶体（13）。 非线性光学器件与实际应用相比，在高功率和高质量输出中红外激光器方面更加兼容，因此在实际中更为适用，因为4H碳化硅晶体具有较高的激光诱导损伤阈值，相对较宽 （0.38-5.9μm和6.6-7.08μm），相对较大的二阶非线性光学系数（d15 = 6.7pm / V），相对较大的双折射率，高导热率（490Wm-1K-1）， 化学稳定性高。

    NONLINEAR OPTICAL DEVICE MANUFACTURED WITH 4H SILICON CARBIDE CRYSTAL
    6.
    发明申请
    NONLINEAR OPTICAL DEVICE MANUFACTURED WITH 4H SILICON CARBIDE CRYSTAL 有权
    具有4H硅碳酸钙晶体的非线性光学器件

    公开(公告)号：US20150085349A1

    公开(公告)日：2015-03-26

    申请号：US14370510

    申请日：2012-01-06

    申请人： Xiaolong Chen ,  Shunchong Wang ,  Tonghua Peng ,  Gang Wang ,  Chunjun Liu ,  Wenjun Wang ,  Shifeng Jin

    发明人： Xiaolong Chen ,  Shunchong Wang ,  Tonghua Peng ,  Gang Wang ,  Chunjun Liu ,  Wenjun Wang ,  Shifeng Jin

    IPC分类号： G02F1/355 ,  H01S3/091 ,  G02F1/361 ,  G02F1/35 ,  G02F1/39

    CPC分类号： G02F1/3551 ,  G02F1/353 ,  G02F1/355 ,  G02F1/361 ,  G02F1/39 ,  G02F2001/392 ,  H01S3/0064 ,  H01S3/0092 ,  H01S3/2391

    摘要： Provided is a nonlinear optical device manufactured with 4H silicon carbide crystal. The nonlinear optical crystal may be configured to alter at least a light beam (12) at a frequency to generate at least a light beam (16) at a further frequency different from the frequency. The nonlinear optical crystal comprises a 4H silicon carbide crystal (13). The nonlinear optical device is more compatible with practical applications in terms of outputting mid-infrared laser at high power and high quality and thus are more applicable in practice, because the 4H silicon carbide crystal has a relatively high laser induced damage threshold, a relatively broad transmissive band (0.38-5.9 μm and 6.6-7.08 μm), a relatively great 2nd-order nonlinear optical coefficient (d15=6.7 pm/V), a relatively great birefringence, a high thermal conductivity (490 Wm−1K−1), and a high chemical stability.

    摘要翻译： 提供了一种用4H碳化硅晶体制造的非线性光学器件。 非线性光学晶体可以被配置为以频率改变至少一个光束（12），以产生不同于频率的另外的频率的至少一个光束（16）。 非线性光学晶体包括4H碳化硅晶体（13）。 非线性光学器件与实际应用相比，在高功率和高质量输出中红外激光器方面更加兼容，因此在实际中更为适用，因为4H碳化硅晶体具有较高的激光诱导损伤阈值，相对较宽 （0.38-5.9μm和6.6-7.08μm），相对较大的二阶非线性光学系数（d15 = 6.7pm / V），相对较大的双折射率，高导热率（490Wm-1K-1）， 化学稳定性高。

    Oral irrigator
    7.
    发明授权
    Oral irrigator 有权

    公开(公告)号：US10959819B2

    公开(公告)日：2021-03-30

    申请号：US15856101

    申请日：2017-12-28

    申请人： Jin-Feng Li ,  Gang Wang ,  Qing Zhang ,  Xin-Quan Liu ,  Xiao-Wen Liu

    发明人： Jin-Feng Li ,  Gang Wang ,  Qing Zhang ,  Xin-Quan Liu ,  Xiao-Wen Liu

    IPC分类号： A61C15/00 ,  A61C17/032 ,  A61C17/02 ,  A61C1/00

    摘要： An oral irrigator contains: a body, a water tank and a detachable jet tip which are both in connection with the body, a power device and a control device Which are both accommodated in the body. The power device is configured to deliver water from the water tank to the detachable jet tip. The power device includes a first outlet defined thereon and configured to discharge the water, a delivery tube connecting with the first outlet, and a first seal element configured to stop water flowing into the body from the power device so that the water discharges out of the first outlet.

    Method and apparatus for detecting abnormal situation
    9.
    发明授权
    Method and apparatus for detecting abnormal situation 有权

    公开(公告)号：US10032082B2

    公开(公告)日：2018-07-24

    申请号：US15143718

    申请日：2016-05-02

    申请人： Bo Pang ,  Shengyin Fan ,  Xin Wang ,  Qian Wang ,  Gang Wang

    发明人： Bo Pang ,  Shengyin Fan ,  Xin Wang ,  Qian Wang ,  Gang Wang

    IPC分类号： G06K9/00

    摘要： A method and an apparatus for detecting an abnormal situation are disclosed. The method includes recognizing whether a detection target exists in a captured image; generating, based on the captured image, a three-dimensional point cloud of the detection target in the captured image, when the detection target exists; obtaining, based on the generated three-dimensional point cloud, one or more current posture features of the detection target; and determining, based on the current posture features and one or more predetermined posture feature standards, whether the abnormal situation exists, the posture feature standards being previously determined based on one or more common features when the detection target performs a plurality of abnormal actions.