Patent ID: 7030443
Filing Date: 2006-04-18
Classification: H01L

Abstract:
1. A MIM capacitor comprising: a substrate; a first metal area formed opposing the substrate; a second metal area formed opposing the substrate, the second metal area being coplanar with the first metal area; a third metal area formed between the first metal area and the substrate so as to oppose the first metal area; a fourth metal area formed between the second metal area and the substrate so as to oppose the second metal area, the fourth metal area being coplanar with the third metal area; and an insulating film formed between the first metal area and the third metal area, and between the second metal area and the fourth metal area; wherein a first capacitance value is determined by opposing surface areas of the first metal area and the third metal area, and a second capacitance value is determined by opposing surface areas of the second metal area and the fourth metal area; and further comprising a fifth metal area formed in an electrically floating state between the third and fourth metal areas and the substrate so as to oppose both the third metal area and the fourth metal area.