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    • 6. 发明授权
    • Deep trench device with single sided connecting structure and fabrication method thereof
    • 具有单面连接结构的深沟槽器件及其制造方法
    • US07619271B2
    • 2009-11-17
    • US11940547
    • 2007-11-15
    • Shian-Jyh LinChien-Li Cheng
    • Shian-Jyh LinChien-Li Cheng
    • H01L29/94
    • H01L29/945H01L27/10823H01L27/10867H01L29/66181
    • A deep trench device with a single sided connecting structure. The device comprises a substrate having a trench therein. A buried trench capacitor is disposed in a lower portion of the trench. An asymmetric collar insulator is disposed on an upper portion of the sidewall of the trench. A connecting structure is disposed in the upper portion of the trench, comprising an epitaxial silicon layer disposed on and adjacent to a relatively low portion of the asymmetric collar insulator and a connecting member disposed between the epitaxial silicon layer and a relatively high portion of the asymmetric collar insulator. A conductive layer is disposed between the relatively high and low portions of the asymmetric collar insulator, to electrically connect the buried trench capacitor and the connecting structure. A cap layer is disposed on the connecting structure. A fabrication method for a deep trench device is also disclosed.
    • 具有单面连接结构的深沟槽装置。 该装置包括其中具有沟槽的衬底。 埋沟槽电容器设置在沟槽的下部。 不对称环形绝缘体设置在沟槽的侧壁的上部。 连接结构设置在沟槽的上部,包括设置在不对称环形绝缘体的相对较低部分上并与其相邻的外延硅层,以及设置在外延硅层和不对称的较高部分之间的连接构件 项圈绝缘子。 导电层设置在不对称环形绝缘体的相对较高和较低的部分之间,以电连接埋入沟槽电容器和连接结构。 盖层设置在连接结构上。 还公开了一种深沟槽器件的制造方法。