Patent ID: 6272002
Filing Date: 2001-08-07
Classification: H01L,H02N,Y10T

Abstract:
An electrostatic holding apparatus in which a voltage is applied to an electrode formed of a conductive layer disposed on an insulator layer and covered with an insulating dielectric layer in order to cause said insulating dielectric layer to electrostatically attract an object, wherein the electrostatic holding apparatus is formed of a sintered body in which a thermal expansion mitigating layer having a coefficient of thermal expansion between that of said conductive layer and that of said insulating dielectric layer and said insulator layer is disposed between said insulating dielectric layer and said conductive layer and/or between said conductive layer and said insulator layer, and directly joined to those layers; and said insulating dielectric layer, said conductive layer, said insulator layer, and said thermal expansion mitigating layer are superposed and press-formed in an unfired state to obtain a green body, which is then sintered to obtain the sintered body.