Patent ID: 8884350
Filing Date: 2014-11-11
Classification: H01L

Abstract:
1. A semiconductor device comprising a plurality of capacitors, each of the capacitors comprising: a cylindrical lower electrode having a top open edge, the cylindrical lower electrode being formed over a substrate, an upper electrode, a dielectric film between the cylindrical lower electrode and the upper electrode, a plate support extending over the substrate in a plate shape, the plate support being contacted on a side surface of the cylindrical lower electrodes at a contacting portion, and links to support the cylindrical lower electrodes, and a pore portion provided in the plate support in a location separate from where the cylindrical lower electrode is disposed in plane view, a part of an outer circumference of the cylindrical lower electrodes being in contact with the pore portion of the plate support in plane view, wherein a topmost open edge of the cylindrical lower electrode is located at an upper position at a top surface of the plate support, and the cylindrical lower electrode has an extending cylindrical portion above a top surface of the plate support.