会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明授权
    • Reduced stress isolation for SOI devices and a method for fabricating
    • 降低SOI器件的应力隔离和制造方法
    • US06627511B1
    • 2003-09-30
    • US08508874
    • 1995-07-28
    • Marco RacanelliHyungcheol ShinHeemyong Park
    • Marco RacanelliHyungcheol ShinHeemyong Park
    • H01L2176
    • H01L21/76264H01L21/32H01L21/76267H01L21/76275H01L21/76281
    • A method for forming an isolation structure (22) on a SOI substrate (11) is provided. A three layer stack of an etchant barrier layer (16), a stress relief layer (17), and an oxide mask layer (18) is formed on the SOI substrate (11). The three layer stack is patterned and etched to expose portions of the etchant barrier layer (16). The silicon layer (13) below the exposed portions of the etchant barrier layer (16) is oxidized to form the isolation structure (22). The isolation structure (22) comprises a bird's head region (21) with a small encroachment which results in higher edge threshold voltage. The method requires minimum over-oxidation and provides for an isolation structure (22) that leaves the SOI substrate (11) planar. Minimal over-oxidation reduces the number of dislocations formed during the oxidation process and improves the source to drain leakage of the device.
    • 提供了一种在SOI衬底(11)上形成隔离结构(22)的方法。 在SOI衬底(11)上形成蚀刻剂阻挡层(16),应力消除层(17)和氧化物掩模层(18)的三层堆叠。 图案化和蚀刻三层堆叠以暴露蚀刻剂阻挡层(16)的部分。 在蚀刻剂阻挡层(16)的暴露部分下面的硅层(13)被氧化以形成隔离结构(22)。 隔离结构(22)包括具有小的侵入的鸟头区域(21),其导致较高的边缘阈值电压。 该方法需要最小的过氧化并提供使SOI衬底(11)平坦离开的隔离结构(22)。 最小的过氧化减少了在氧化过程中形成的位错数,并且改善了器件的源漏漏。