Patent ID: 8724288
Filing Date: 2014-05-13
Classification: H01L,H02N,Y10T

Abstract:
1. An electrostatic chuck comprising: a chuck plate made of a dielectric material; and a first electrode and a second electrode, both the electrodes being disposed in the chuck plate such that a voltage is applied between the first and the second electrodes to thereby attract a to-be-processed substrate to a surface of the chuck plate, wherein the electrostatic chuck further comprises, on part of the surface of the chuck plate, a substrate holding section having an adhesive force with respect to the to-be-processed substrate, wherein a surface of the substrate holding section, in a free state thereof, is projected out of the surface of the chuck plate by a predetermined height and, when the to-be-processed substrate is attracted to the surface of the chuck plate by applying a voltage between the first and the second electrodes, the substrate holding section is compressed such that the surface of the substrate holding section becomes flush with the surface of the chuck plate, wherein the chuck plate has a counter-bored portion only on a peripheral surface portion of the chuck plate, wherein the substrate holding section having the adhesive force is provided on the counter-bored portion and is an independent item from the chuck plate and a substrate so that a surface of the substrate holding section in a free state is projected out of the surface of the chuck plate by a predetermined height, and wherein the substrate holding section is an adhesive tape.