Patent ID: 7417275
Filing Date: 2008-08-26
Classification: H01L

Abstract:
1. A capacitor pair structure for increasing the match thereof, said capacitor pair structure comprising: a first finger electrode structure having a first electrode and a plurality of first extended electrodes, said plurality of first extended electrodes being parallel to each other and connecting to said first electrode; a second finger electrode structure having a second electrode and a plurality of second extended electrodes, said plurality of second extended electrodes being parallel to each other and connecting to said second electrode, wherein said second finger electrode structure is interlaced with said first finger electrode structure; a third electrode structure having a plurality of third electrodes located on an interconnect level, wherein said plurality of third electrodes are physically separate from each other and are not connected on the same interconnect level, and are respectively interlaced between said first finger electrode structure and said second finger electrode structure; and a fourth electrode connected to said plurality of third electrodes by a plurality of vias, said fourth electrode having a single conductive strip with an elongated rectangular shape and being located on an adjacent interconnect level different from the interconnect level of said plurality of third electrodes; wherein the adjacent interconnect level includes said fourth electrode, but excludes said first finger electrode structure, said second finger electrode structure and said plurality of third electrodes.