METHOD AND SYSTEM FOR MOM CAPACITANCE VALUE CONTROL

A method for MOM capacitance value control is disclosed. The method comprises: S01: setting a target thicknesses for each metal layers; S02: after forming a current metal layer, measuring a thickness of the current metal layer; when the thickness of the current metal layer is equal to or less than a...

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Bibliographische Detailangaben
Hauptverfasser:	Huang, Ran, Cui, Yeqing, Deng, Jianning
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS SEMICONDUCTOR DEVICES TESTING
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Beschreibung
Zusammenfassung:	A method for MOM capacitance value control is disclosed. The method comprises: S01: setting a target thicknesses for each metal layers; S02: after forming a current metal layer, measuring a thickness of the current metal layer; when the thickness of the current metal layer is equal to or less than a threshold value, then turning to step S03; S03: calculating multiple capacitance variations related to the current metal layer according to the thickness of the current metal layer; wherein each of the capacitance variation related to the current metal layer is between an actual capacitance value of a MOM capacitor combination associated with the current metal layer and a target capacitance value of the same MOM capacitor combination; S04: calculating updated target thicknesses for all subsequent metal layers according to the capacitance variations related to the current metal layer.