Patent ID: 7977724
Filing Date: 2011-07-12
Classification: H01L

Abstract:
1. A capacitor comprising: a plurality of cylindrical storage electrodes formed on a substrate; a plurality of ring-shaped stabilizing members, each ring-shaped stabilizing member enclosing one of the storage electrodes to structurally support the storage electrodes, the stabilizing members being substantially perpendicular to the storage electrodes and extending to adjacent storage electrodes; a dielectric layer formed on the storage electrodes; and a plate electrode formed on the dielectric layer, wherein each stabilizing member is spaced apart from an adjacent stabilizing member in a first direction and is not connected to the adjacent stabilizing member in the first direction and the stabilizing member is directly connected to another adjacent stabilizing member along a slant direction relative to the first direction, wherein an annular groove for receiving the stabilizing member is formed at an upper outer face of each of the storage electrodes, and wherein a lower annular groove is formed at a lower outer surface of each of the storage electrodes.