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US09564484B2 Metal-insulator-metal back end of line capacitor structures 有权
金属绝缘体金属后端的线路电容器结构

Metal-insulator-metal back end of line capacitor structures
Abstract:
Embodiments of the present invention provide improved metal-insulator-metal (MIM) capacitors. In embodiments, series resistance is reduced by forming a via underneath the bottom plate of a MIM capacitor, leading to a metallization layer or intermediate metal sublayer. In embodiments, the MIM capacitor is formed with a corrugated shape to increase the plate surface area, allowing a thicker dielectric to be used, thereby mitigating leakage issues.
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