Patent ID: 7791857
Filing Date: 2010-09-07
Classification: H01L,H02N

Abstract:
1. An electrostatic chuck device for fixing a substrate, the electrostatic chuck device comprising: a metal electrode having a top surface, a bottom surface, and side surfaces, wherein a plurality of embossed projections and depressions are disposed on the top surface of the metal electrode; and a dielectric layer formed on each of a top surface of the plurality of embossed projections so as to cover the top surface, wherein the metal electrode has a first end for connecting a rf power source through a matching circuit and a second end for connecting a DC power source through a rf cutoff filter, a top surface of the dielectric layer is uneven, a bottom surface of each of the embossed depressions is not covered by the dielectric layer, and a thickness of the dielectric layer is smaller than height of the embossed projections.