Patent ID: 7554789
Filing Date: 2009-06-30
Classification: H01L,H03M

Abstract:
1. A capacitor comprising identical capacitor arrays arranged symmetrically in a horizontal orientation, and each of the capacitor arrays comprising: a plurality of unit capacitors, each having first and second electrode plates; wherein the first electrode plates are connected via first routings, and the second electrode plates are grouped and connected to a plurality of nodes via second routings, wherein second routings connected to one node and another do not overlap in the capacitor array, and all of the second electrode plates connected to the same node conglomerate as a sub-capacitor, and no second electrode plate connected to another node is located in the sub-capacitor; wherein the second routings of the capacitor arrays are routed out to a plurality of signal rails, respectively associated with one of the nodes, between the capacitor arrays, and the signal rails are formed with a conducting layer other than a conducting layer for the second routings of the second electrode plates.