Patent ID: 8877577
Filing Date: 2014-11-04
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device comprising: providing a substrate with an active area and a first interlayer dielectric formed over the substrate, the first interlayer dielectric having a first opening penetrating through the first interlayer dielectric so as to expose a portion of a surface of the active area; filling the first opening with a fill material, wherein, the fill material can be selectively removed with respect to the material of the first interlayer dielectric; forming a second interlayer dielectric over the first interlayer dielectric, the second interlayer dielectric having a second opening penetrating through the second interlayer dielectric so as to substantially expose an upper portion of the fill material in the corresponding first opening; removing the fill material; and filling the first opening and the second opening with a conductive material so as to form a contact.