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172 条记录 (耗时 0.052 秒)

    ALUMINUM GALLIUM NITRIDE/GALLIUM NITRIDE HIGH ELECTRON MOBILITY TRANSISTORS
    111.
    发明申请
    ALUMINUM GALLIUM NITRIDE/GALLIUM NITRIDE HIGH ELECTRON MOBILITY TRANSISTORS 审中-公开
    氮化镓/氮化镓高电子移动晶体管

    公开(公告)号：US20100084687A1

    公开(公告)日：2010-04-08

    申请号：US12558242

    申请日：2009-09-11

    申请人： Jing Chen ,  Maojun Wang

    发明人： Jing Chen ,  Maojun Wang

    IPC分类号： H01L29/778 ,  H01L21/335

    CPC分类号： H01L29/207 ,  H01L29/2003 ,  H01L29/66462 ,  H01L29/7783 ,  H01L29/7788

    摘要： Structures, devices and methods are provided for creating enhanced back barriers that improve the off-state breakdown and blocking characteristics in aluminum gallium nitride AlGaN/GaN high electron mobility transistors (HEMTs). In one aspect, selective fluorine ion implantation is employed when developing HEMTs to create the enhanced back barrier structures. By creating higher energy barriers at the back of the two-dimensional electron gas channel in the unintentionally doped GaN buffer, higher off-state breakdown voltage is advantageously provided and blocking capability is enhanced, while allowing for convenient and cost-effective post-epitaxial growth fabrication. Further non-limiting embodiments are provided that illustrate the advantages and flexibility of the disclosed structures.

    摘要翻译： 提供了结构，装置和方法，用于产生改进的氮化镓铝AlGaN / GaN高电子迁移率晶体管（HEMT）中的截止状态击穿和阻挡特性的增强后阻挡层。 在一个方面，当开发HEMT以产生增强的背景屏障结构时，采用选择性氟离子注入。 通过在无意掺杂的GaN缓冲器中在二维电子气体通道的背面产生更高的能量势垒，有利地提供更高的截止击穿电压，并且提高了阻挡能力，同时允许方便且具有成本效益的外延生长 制造。 提供了另外的非限制性实施例，其示出了所公开的结构的优点和灵活性。

    Method for producing 1,2-propylene glycol using bio-based glycerol
    112.
    发明授权
    Method for producing 1,2-propylene glycol using bio-based glycerol 失效
    使用生物基甘油生产1,2-丙二醇的方法

    公开(公告)号：US07586016B2

    公开(公告)日：2009-09-08

    申请号：US12232982

    申请日：2008-09-26

    申请人： Fang Cui ,  Jing Chen ,  Chungu Xia ,  Haixiao Kang ,  Xinzhi Zhang ,  Jin Tong ,  Xuemei Li

    发明人： Fang Cui ,  Jing Chen ,  Chungu Xia ,  Haixiao Kang ,  Xinzhi Zhang ,  Jin Tong ,  Xuemei Li

    IPC分类号： C07C29/132

    CPC分类号： B01J37/18 ,  B01J23/83 ,  B01J37/03 ,  C07C29/60 ,  C07C31/205

    摘要： This invention disclosed a method for producing 1,2-propylene glycol from bio-based glycerol. In this method, a CuO—CeO2—SiO2 catalyst is filled into a fixed bed reactor, a glycerol solution is flowed into the reactor together with hydrogen gas in a manner of top feeding, and controlling the reaction temperature to be 170˜200° C., the reaction pressure to be 1.0˜5.0 MPa, so as to realize the production of 1,2-propylene glycol from the hydrogenation of glycerol. The catalyst used in this invention can sustain a high selectivity for the target product and a high conversion for glycerol for 500 hours.

    摘要翻译： 本发明公开了一种从生物基甘油生产1,2-丙二醇的方法。 在该方法中，将CuO-CeO 2 -SiO 2催化剂填充到固定床反应器中，以顶部进料的方式将甘油溶液与氢气一起流入反应器，控制反应温度为170〜200℃ 反应压力为1.0〜5.0MPa，从而实现甘油氢化制备1,2-丙二醇。 用于本发明的催化剂可以维持目标产物的高选择性和甘油的高转化率500小时。

    INTERCONNECT ROUTING METHODS OF INTEGRATED CIRCUIT DESIGNS
    113.
    发明申请
    INTERCONNECT ROUTING METHODS OF INTEGRATED CIRCUIT DESIGNS 有权
    集成电路设计的互连路由方法

    公开(公告)号：US20090113372A1

    公开(公告)日：2009-04-30

    申请号：US12347902

    申请日：2008-12-31

    申请人： Limin He ,  So-Zen Yao ,  Wenyong Deng ,  Jing Chen ,  Liang-Jih Chao

    发明人： Limin He ,  So-Zen Yao ,  Wenyong Deng ,  Jing Chen ,  Liang-Jih Chao

    IPC分类号： G06F17/50

    CPC分类号： G06F17/5077

    摘要： Routing methods for an integrated circuit design layout are disclosed. The layout can include design netlists and library cells. A multiple-level global routing can generate topological wire for each net. An area oriented graph-based detail routing on the design can be performed. A post route optimization after the detail routing can be performed to further improve the routing quality. Some methods can be single threaded all or some of the time, and/or multi-threaded some or all of the time.

    摘要翻译： 公开了集成电路设计布局的布线方法。 布局可以包括设计网表和库单元格。 多级全局路由可以为每个网络生成拓扑线。 可以执行设计上面向图形的基于图形的详细路由。 可以执行详细路由后的路由优化，以进一步提高路由质量。 一些方法可以是单线程的全部或部分时间，和/或多线程的一些或所有的时间。

    Region-based controlling method and system for electronic documents
    114.
    发明申请
    Region-based controlling method and system for electronic documents 审中-公开
    基于区域的电子文件控制方法和系统

    公开(公告)号：US20080313527A1

    公开(公告)日：2008-12-18

    申请号：US11896954

    申请日：2007-09-07

    申请人： Jing Chen

    发明人： Jing Chen

    IPC分类号： G06F15/00

    CPC分类号： H04L63/102 ,  G06F21/6218 ,  G06F2221/2111 ,  G06F2221/2139 ,  H04L67/18 ,  H04L2463/101 ,  H04N21/25841 ,  H04N21/83

    摘要： The invention provides a region-based controlling method and system of electronic documents. In this method, the electronic document is first encapsulated within a virtual “container”, forming a new electronic file (system), which contains at least a region judgment module, used to judge the current location of the document, and contains a play/display module that controls the status of playing or displaying the document. When the document needs to be played or displayed, the play/display module sends the request to the region judgment module to confirm the current location, and the region judgment module sends the region Authentication request to the region server via the terminal device. After the region authentication session finishes, the response from the region server is received by the terminal device. If the response indicates that the terminal device is within the authorized region, the play/display module will continue to play or display the document, and otherwise the play/display module will reject the request to open the document. By this invention, unauthorized copy and propagation of electronic files can be prevented.

    摘要翻译： 本发明提供了一种基于区域的电子文件控制方法和系统。 在该方法中，电子文档首先被封装在虚拟的“容器”内，形成新的电子文件（系统），该电子文件至少包含区域判断模块，用于判断文档的当前位置，并且包含播放/ 显示模块，用于控制播放或显示文档的状态。 当需要播放或显示文档时，播放/显示模块将请求发送到区域判断模块以确认当前位置，并且区域判断模块经由终端设备向区域服务器发送区域认证请求。 区域认证会话结束后，由终端设备接收区域服务器的响应。 如果响应表示终端设备在授权区域内，播放/显示模块将继续播放或显示文档，否则播放/显示模块将拒绝打开文档的请求。 通过本发明，可以防止电子文件的非法复制和传播。

    Low Density Drain HEMTs
    115.
    发明申请
    Low Density Drain HEMTs 有权
    低密度排水HEMT

    公开(公告)号：US20070295993A1

    公开(公告)日：2007-12-27

    申请号：US11564795

    申请日：2006-11-29

    申请人： Jing Chen ,  Kel Lau

    发明人： Jing Chen ,  Kel Lau

    IPC分类号： H01L29/778 ,  H01L21/338

    CPC分类号： H01L29/7786 ,  H01L29/2003 ,  H01L29/66462

    摘要： Methods and devices for fabricating AlGaN/GaN normally-off high electron mobility transistors (HEMTs). A fluorine-based (electronegative ions-based) plasma treatment or low-energy ion implantation is used to modify the drain-side surface field distribution without the use of a field plate electrode. The off-state breakdown voltage can be improved and current collapse can be completely suppressed in LDD-HEMTs with no significant degradation in gains and cutoff frequencies.

    摘要翻译： 用于制造AlGaN / GaN常关高电子迁移率晶体管（HEMT）的方法和装置。 使用基于氟（电负离子的）等离子体处理或低能离子注入来改变漏极侧表面场分布而不使用场板电极。 可以改善截止状态击穿电压，并且在LDD-HEMT中可以完全抑制电流崩溃，而增益和截止频率没有明显的降低。

    METHOD OF SYNTHESIZING TRIOXYMETHYLENE FROM FORMALDEHYDE BY THE CATALYTIC ACTION OF AN IONIC LIQUID
    116.
    发明申请
    METHOD OF SYNTHESIZING TRIOXYMETHYLENE FROM FORMALDEHYDE BY THE CATALYTIC ACTION OF AN IONIC LIQUID 有权
    通过离子液体的催化作用合成来自甲醛的三甲基乙烯的方法

    公开(公告)号：US20070135649A1

    公开(公告)日：2007-06-14

    申请号：US11636156

    申请日：2006-12-08

    申请人： Chungu Xia ,  Zhonghua Tang ,  Jing Chen ,  Xinzhi Zhang ,  Zhen Li ,  Enxiu Guo

    发明人： Chungu Xia ,  Zhonghua Tang ,  Jing Chen ,  Xinzhi Zhang ,  Zhen Li ,  Enxiu Guo

    IPC分类号： C07D323/06

    CPC分类号： C07D323/06

    摘要： The present invention relates to a method of synthesizing trioxymethylene from formaldehyde by the catalytic action of an acidic ionic liquid. In the method, formaldehyde solution with a concentration of 30˜80 wt % is used as reactant, and an ionic liquid is used as catalyst. The cation moiety of the catalyst is selected from either imidazoles cation or pyridines cation, and the anion moiety of the catalyst is selected from one of p-tolyl benzene sulfonate, trifluoromethyl sulfonate, and hydrogen sulfate. In the present invention, ionic liquid is used, for the first time, as a catalyst to synthesize trioxymethylene from formaldehyde. The catalyst can be circularly used for continuous sampling.

    摘要翻译： 本发明涉及一种通过酸性离子液体的催化作用从甲醛合成三甲基甲酰胺的方法。 在该方法中，使用浓度为30〜80重量％的甲醛溶液作为反应物，使用离子液体作为催化剂。 催化剂的阳离子部分选自咪唑阳离子或吡啶阳离子，催化剂的阴离子部分选自对甲苯基苯磺酸盐，三氟甲基磺酸盐和硫酸氢盐之一。 在本发明中，首次使用离子液体作为从甲醛合成三甲基甲酰胺的催化剂。 催化剂可循环用于连续取样。

    Method, device, and system for deriving keys
    118.
    发明授权
    Method, device, and system for deriving keys 有权

    公开(公告)号：US11240019B2

    公开(公告)日：2022-02-01

    申请号：US13323840

    申请日：2011-12-13

    申请人： Aiqin Zhang ,  Jing Chen ,  Xiaoyu Bi

    发明人： Aiqin Zhang ,  Jing Chen ,  Xiaoyu Bi

    IPC分类号： H04L9/08 ,  H04L29/06 ,  H04W12/041 ,  H04W36/00 ,  H04W88/14

    摘要： Method, device, and system for deriving keys are provided in the field of mobile communications technologies. The method for deriving keys may be used, for example, in a handover process of a User Equipment (UE) from an Evolved Universal Terrestrial Radio Access Network (EUTRAN) to a Universal Terrestrial Radio Access Network (UTRAN). If a failure occurred in a first handover, the method ensures that the key derived by a source Mobility Management Entity (MME) for a second handover process of the UE is different from the key derived for the first handover process of the UE. This is done by changing input parameters used in the key derivation, so as to prevent the situation in the prior art that once the key used on one Radio Network Controller (RNC) is obtained, the keys on other RNCs can be derived accordingly, thereby enhancing the network security.

    Method for preparing polyoxymethylene dimethyl ethers by acetalation reaction of formaldehyde with methanol
    119.
    发明授权
    Method for preparing polyoxymethylene dimethyl ethers by acetalation reaction of formaldehyde with methanol 有权
    通过甲醛与甲醇的缩醛化反应制备聚甲醛二甲醚的方法

    公开(公告)号：US08987521B2

    公开(公告)日：2015-03-24

    申请号：US13164677

    申请日：2011-06-20

    申请人： Chungu Xia ,  Heyuan Song ,  Jing Chen ,  Zhen Li

    发明人： Chungu Xia ,  Heyuan Song ,  Jing Chen ,  Zhen Li

    IPC分类号： C07C41/14 ,  C07C41/56 ,  C07C41/58

    CPC分类号： C07C41/56 ,  B01J31/0284 ,  B01J2231/14 ,  B01J2231/42 ,  C07C41/58 ,  Y02P20/582 ,  Y02P20/584 ,  C07C43/30

    摘要： It is disclosed a method for preparing polyoxymethylene dimethyl ethers by continuous polymerization and acetalation reactions. The method may include two steps: performing a polymerization reaction of an aqueous formaldehyde solution under catalysis of an ionic liquid IL I to obtain a mixed aqueous solution of trioxymethylene and formaldehyde; and an acetalation reaction of the mixed aqueous solution of trioxymethylene and formaldehyde with methanol is performed under catalysis of an ionic liquid IL II to prepare polyoxymethylene dimethyl ethers. The method may use an aqueous formaldehyde solution as a starting material to prepare polyoxymethylene dimethyl ethers by continuous polymerization and acetalation reactions, achieving a high use ratio of formaldehyde. A film evaporator is used in the invention, realizing a rapid separation and recycling of the light components, with a high separation efficiency. The separation of the catalyst is simple, thereby realizing recycling of the catalyst.

    摘要翻译： 公开了通过连续聚合和缩醛化反应制备聚甲醛二甲醚的方法。 该方法可以包括以下两个步骤：在离子液体IL I的催化下进行甲醛水溶液的聚合反应，得到三甲基甲醛和甲醛的混合水溶液; 并且在离子液体IL II的催化下进行三甲醛和甲醛与甲醇的混合水溶液的缩醛化反应，以制备聚甲醛二甲醚。 该方法可以使用甲醛水溶液作为起始原料，通过连续聚合和缩醛化反应制备聚甲醛二甲醚，实现甲醛的高使用比例。 在本发明中使用薄膜蒸发器，以高分离效率实现轻组分的快速分离和再循环。 催化剂的分离是简单的，从而实现催化剂的再循环。

    ROUTING INTERCONNECT OF INTEGRATED CIRCUIT DESIGNS WITH VARYING GRID DENSITIES
    120.
    发明申请
    ROUTING INTERCONNECT OF INTEGRATED CIRCUIT DESIGNS WITH VARYING GRID DENSITIES 审中-公开
    集成电路设计的路由互连与变化的网络密度

    公开(公告)号：US20140215426A1

    公开(公告)日：2014-07-31

    申请号：US13753374

    申请日：2013-01-29

    申请人： Limin He ,  So-Zen Yao ,  Wenyong Deng ,  Jing Chen ,  Liang-Jih Chao

    发明人： Limin He ,  So-Zen Yao ,  Wenyong Deng ,  Jing Chen ,  Liang-Jih Chao

    IPC分类号： G06F17/50

    CPC分类号： G06F17/5077 ,  G06F17/5018 ,  G06F17/5072

    摘要： Routing methods for an integrated circuit design layout are disclosed. The layout can include design netlists and library cells. A multiple-level global routing can generate topological wire for each net. An area oriented graph-based detail routing on the design can be performed. A post route optimization after the detail routing can be performed to further improve the routing quality. Some methods can be single threaded all or some of the time, and/or multi-threaded some or all of the time.

    摘要翻译： 公开了集成电路设计布局的布线方法。 布局可以包括设计网表和库单元格。 多级全局路由可以为每个网络生成拓扑线。 可以执行设计上面向图形的基于图形的详细路由。 可以执行详细路由后的路由优化，以进一步提高路由质量。 一些方法可以是单线程的全部或部分时间，和/或多线程的一些或所有的时间。