Methods to minimize communication in a cluster database system
    33.
    发明授权
    Methods to minimize communication in a cluster database system 有权
    最小化集群数据库系统中的通信的方法

    公开(公告)号:US09229970B2

    公开(公告)日:2016-01-05

    申请号:US12632750

    申请日:2009-12-07

    Abstract: An ordering of operations in log records includes: performing update operations on a database object by a node; writing log records for the update operations into a local buffer by the node, the log records each including a local virtual timestamp; determining that a log flush to write the log records in the local buffer to a persistent storage is to be performed; in response, sending a request from the node to a log flush sequence server for a log flush sequence number; receiving the log flush sequence number by the node; inserting the log flush sequence number into the log records in the local buffer; and performing the log flush to write the log records in the local buffer to the persistent storage, where the log records written to the persistent storage comprises the local virtual timestamps and the log flush sequence number.

    Abstract translation: 日志记录中的操作排序包括:由节点对数据库对象执行更新操作; 将更新操作的日志记录由节点写入本地缓冲区,每个日志记录包括本地虚拟时间戳; 确定要执行将本地缓冲区中的日志记录写入永久存储器的日志刷新; 作为响应,向日志刷新序列服务器发送来自节点的请求以用于日志刷新序列号; 由节点接收日志刷新序列号; 将日志刷新序列号插入到本地缓冲区中的日志记录中; 并执行日志刷新以将本地缓冲区中的日志记录写入永久存储器,其中写入永久存储器的日志记录包括本地虚拟时间戳和日志刷新序列号。

    POWER SEMICONDUCTOR DEVICE AND PREPARATION METHOD THEREOF
    34.
    发明申请
    POWER SEMICONDUCTOR DEVICE AND PREPARATION METHOD THEREOF 有权
    功率半导体器件及其制备方法

    公开(公告)号:US20150249045A1

    公开(公告)日:2015-09-03

    申请号:US14194502

    申请日:2014-02-28

    Abstract: A preparation method for a power semiconductor device includes: providing a lead frame containing a plurality of chip mounting units, one side edge of a die paddle of each chip mounting unit is bent and extended upwardly and one lead connects to the bent side edge of the die paddle and extends in an opposite direction from the die paddle; attaching a semiconductor chip to the top surface of the die paddle; forming metal bumps on each electrode at the front of the semiconductor chip with a top end of each metal bump protruding out of a plane of the top surface of the lead; heating the metal bump and pressing a top end of each metal bump by a pressing plate forming a flat top end surface that is flush with the top surface of the lead; and cutting the lead frame to separate individual chip mounting units.

    Abstract translation: 一种功率半导体器件的制备方法,包括:提供包含多个芯片安装单元的引线框架,每个芯片安装单元的模板的一个侧边缘向上弯曲并向上延伸,并且一个引线连接到所述芯片安装单元的弯曲侧边缘 模具桨,并且在与模桨相反的方向上延伸; 将半导体芯片附接到所述管芯焊盘的顶表面; 在半导体芯片的前面的每个电极上形成金属凸块,每个金属凸块的顶端从引线的顶表面的平面突出; 加热金属凸块并通过压板压制每个金属凸块的顶端,该压板形成与引线顶表面齐平的平坦顶端表面; 并切割引线框架以分离各个芯片安装单元。

    A SEMICONDUCTOR PACKAGE OF A FLIPPED MOSFET
    37.
    发明申请
    A SEMICONDUCTOR PACKAGE OF A FLIPPED MOSFET 有权
    襟翼MOSFET的半导体封装

    公开(公告)号:US20140361418A1

    公开(公告)日:2014-12-11

    申请号:US13913183

    申请日:2013-06-07

    Abstract: The invention relates to a semiconductor package of a flip chip and a method for making the semiconductor package. The semiconductor chip comprises a metal-oxide-semiconductor field effect transistor. On a die paddle including a first base, a second base and a third base, half-etching or punching is performed on the top surfaces of the first base and the second base to obtain plurality of grooves that divide the top surface of the first base into a plurality of areas comprising multiple first connecting areas, and divide the top surface of the second base into a plurality of areas comprising at least a second connecting area. The semiconductor chip is connected to the die paddle at the first connecting areas and the second connecting area.

    Abstract translation: 本发明涉及倒装芯片的半导体封装以及制造半导体封装的方法。 半导体芯片包括金属氧化物半导体场效应晶体管。 在包括第一基底,第二基底和第三基底的裸片上,在第一基底和第二基底的顶表面上进行半蚀刻或冲孔,以获得多个凹槽,该凹槽将第一基底 进入包括多个第一连接区域的多个区域,并且将第二基座的顶表面分成包括至少第二连接区域的多个区域。 半导体芯片在第一连接区域和第二连接区域处连接到管芯焊盘。

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