Patent ID: 6122159
Filing Date: 2000-09-19
Classification: H01L,Y10T

Abstract:
An electrostatic holding apparatus for electrostatically attract an object when applied with a voltage, the apparatus comprising:an electrode to be applied with the voltage; andan insulating dielectric layer covering the electrode,wherein the insulating dielectric layer is formed of a sintered body having a volume resistivity of 1.times.10.sup.8 to 8.times.10.sup.13 .OMEGA..multidot.cm at 25.degree. C. and containing a high resistivity ceramic, 2.5 to 5 wt. % of titania (TiO.sub.2) and 5 wt. % or less of titanium nitride (TiN), wherein the high resistivity ceramic has a volume resistivity of 1.times.10.sup.14 .OMEGA..multidot.cm or higher at 25.degree. C.