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    • 13. 发明授权
    • Method for forming a thin-film, electrically blowable fuse with a reproducible blowing wattage
    • 用可重现的吹制瓦数形成薄膜可电熔熔断器的方法
    • US06372652B1
    • 2002-04-16
    • US09494633
    • 2000-01-31
    • Purakh Raj VermaZia Alan ShafiYu ShanZeng ZhengManju SarkarShao-Fu Sanford Chu
    • Purakh Raj VermaZia Alan ShafiYu ShanZeng ZhengManju SarkarShao-Fu Sanford Chu
    • H01L21302
    • H01L23/5256H01L2924/0002H01L2924/00
    • A method for forming a thin film, electrically blowable fuse with reproducible blowing wattage using a sacrificial metal patch over a fuse dielectric layer and two etch processes; wherein the first etch process is selective to the metal patch and the second etch process is selective to the fuse dielectric layer. A fuse element, having an element width, is formed over a semiconductor structure, and a fuse dielectric layer is formed over the fuse element. A sacrificial metal patch is formed on the fuse dielectric layer; wherein the patch width being greater than the fuse element width. A second dielectric layer is formed on the sacrificial metal patch, and additional metal layers and dielectric layers may be formed over the second dielectric layer, but only the dielectric layers will remain over the fuse element. The second dielectric layer and any overlying dielectric layers are patterned to form a fuse window opening, having a width greater than the sacrificial metal patch, using a first fuse window etch selective to the sacrificial metal patch. Then, the sacrificial metal patch is etched through the fuse window opening using a second fuse window etch selective to the fuse dielectric layer, leaving a reproducible thickness of the fuse dielectric layer overlying the fuse element; thereby providing a reproducible blowing wattage.
    • 一种用于在熔丝电介质层和两个蚀刻工艺上使用牺牲金属贴片形成具有可再现的吹扫功率的薄膜电可熔电熔丝的方法; 其中所述第一蚀刻工艺对所述金属贴片是选择性的,并且所述第二蚀刻工艺对所述熔丝电介质层是选择性的。 在半导体结构上形成具有元件宽度的熔丝元件,并且在保险丝元件上形成熔丝电介质层。 在熔丝绝缘层上形成牺牲金属贴片; 其中所述贴片宽度大于所述熔丝元件宽度。 在牺牲金属贴片上形成第二电介质层,并且可以在第二电介质层上形成附加的金属层和电介质层,但是只有电介质层将保留在熔丝元件上方。 使用对牺牲金属贴片选择性的第一熔丝窗口蚀刻,将第二电介质层和任何上覆电介质层图案化以形成具有大于牺牲金属贴片的宽度的熔丝窗口。 然后,使用对熔丝电介质层选择性的第二熔丝窗蚀刻,通过熔丝窗口蚀刻牺牲金属贴片,留下覆于熔丝元件上的熔丝电介质层的可再现厚度; 从而提供可重复的吹制瓦数。
    • 14. 发明授权
    • Method to eliminate top metal corner shaping during bottom metal patterning for MIM capacitors
    • 用于MIM电容器的底金属图案化期间消除顶部金属角成形的方法
    • US06284590B1
    • 2001-09-04
    • US09726655
    • 2000-11-30
    • Randall Cher Liang ChaCheng Yeow NgShao-Fu Sanford ChuTae Jong LeeChua Chee Tee
    • Randall Cher Liang ChaCheng Yeow NgShao-Fu Sanford ChuTae Jong LeeChua Chee Tee
    • H01L218242
    • H01L28/40H01L21/32139H01L28/60Y10S438/957
    • A method for fabricating a metal-insulator-metal capacitor wherein top metal corner shaping during patterning is eliminated is described. An insulating layer is provided overlying a semiconductor substrate. A first metal layer is deposited over the insulating layer. A capacitor dielectric layer is deposited overlying the first metal layer. A second metal layer is deposited overlying the capacitor dielectric layer and patterned to form a top metal electrode. A flowable material layer is deposited overlying the capacitor dielectric and the top metal electrode and anisotropically etched away to leave spacers on sidewalls of the top metal electrode. A photoresist mask is formed overlying the capacitor dielectric and the top metal electrode wherein the spacers provide extra photoresist thickness at the sidewalls of the top metal layer. The capacitor dielectric layer and the first metal layer are patterned wherein the patterned first metal layer forms a bottom metal electrode and wherein the spacers protect the top metal layer from etching during the patterning. The photoresist mask is removed, completing fabrication of a metal-insulator-metal capacitor.
    • 描述了一种用于制造金属 - 绝缘体 - 金属电容器的方法,其中消除了图案化期间的顶部金属角成形。 绝缘层设置在半导体衬底上。 第一金属层沉积在绝缘层上。 沉积在第一金属层上的电容器电介质层。 将第二金属层沉积在电容器介电层上并被图案化以形成顶部金属电极。 将可流动材料层沉积在电容器电介质和顶部金属电极上,并各向异性地蚀刻掉,以在顶部金属电极的侧壁上留下间隔物。 形成覆盖电容器电介质和顶部金属电极的光致抗蚀剂掩模,其中间隔物在顶部金属层的侧壁处提供额外的光致抗蚀剂厚度。 电容器电介质层和第一金属层被图案化,其中图案化的第一金属层形成底部金属电极,并且其中间隔件在图案化期间保护顶部金属层不被蚀刻。 去除光致抗蚀剂掩模,完成金属 - 绝缘体 - 金属电容器的制造。