Patent ID: 7666794
Filing Date: 2010-02-23
Classification: H04L

Abstract:
1. A method of forming a double patterned semiconductor structure comprising: forming a first patternable low-k dielectric material above a surface of a material stack; patterning said first patternable low-k dielectric material to provide a first structure having a first patterned low-k dielectric material above said surface of said material stack; forming a second patternable low-k dielectric material over said first structure and on an exposed upper surface of said material stack not including said first structure; patterning said second patternable low-k dielectric material to provide a second structure including a second patterned low-k dielectric material located atop a portion of said exposed upper surface of said material stack and adjacent to, but not abutting the first patterned low-k dielectric material; curing at least the second patterned low-k dielectric material; transferring patterns provided by said first and second patterned low-k dielectric materials into said material stack; and maintaining said first and second patterned low-k dielectric materials within the structure as permanent dielectric layers.