Patent ID: 7969173
Filing Date: 2011-06-28
Classification: G01R,H01L,Y10T

Abstract:
1. A chuck for a probe station comprising: (a) a first chuck assembly element having a lower surface and an upper surface thereon suitable to support a wafer; (b) a second chuck assembly element having an upper surface and a lower surface where the upper surface is in opposing relationship to said lower surface of said first chuck assembly element; (c) a chuck spacing mechanism interconnecting said first and second chuck assembly elements and defining the spacing between said first and second chuck assembly elements; (d) said chuck spacing mechanism including a first insulator spaced apart from said first chuck assembly element and having a first surface in pressing engagement with said upper surface of said second chuck assembly element and a second surface in pressing engagement with a first surface of a conductive spacer, a second surface of said conductive spacer in pressing engagement with said lower surface of said first chuck assembly element.