Patent ID: 7492030

Claim:
An electronic system, comprising: a processor; and a memory coupled to the processor, wherein the processor and the memory are formed by a method including forming an interlayer dielectric (ILD), including: forming an insulator layer; forming at least one trench in the insulator layer; forming a metal layer in the at least one trench having substantially smooth surfaces; and after forming the metal layer, forming a plurality of substantially curved gas filled voids beside the metal layer having an average size substantially smaller than a metal to metal distance in the insulator layer; wherein forming the insulator layer includes forming an insulator layer with a multiphase structure; and forming voids in the insulator layer includes at least partially removing at least one phase from the multiphase structure; and wherein: forming the insulator layer with a multiphase structure includes forming a carbon-containing glass layer; and at least partially removing at least one phase from the multiphase structure includes at least exposing the carbon-containing glass layer to an oxygen (O 2 ) containing environment with an elevated temperature to form carbon dioxide (CO 2 ) voids.