Patent ID: 6160615
Filing Date: 2000-12-12
Classification: G01N,H01L

Abstract:
A surface measurement apparatus comprising a sample chuck for supporting a sample by adhering a back surface of the sample to a supporting surface; a moving mechanism for moving linearly and rotating the sample chuck; a base member for supporting the moving mechanism; a sample lifting mechanism for lifting the sample on the supporting surface of said sample chuck off from said supporting surface; and an optical measurement system for measuring the surface of the sample supported to said sample chuck to be rotated, whereinsaid supporting surface of the chuck comprises a flat surface for supporting the substantially whole periphery of an outer peripheral edge of the sample and through holes being formed in said flat surface and being passed through with plural lift pins provided on said sample lifting mechanism andsaid sample lifting mechanism is arranged in the side of said base member, said sample lifting mechanism extending said plural lift pins so as to lift the sample up from the supporting surface by penetrating said through holes with said plural lift pins when said sample chuck is stopped at a predetermined position where positions of said plural lift pins correspond to those of said through holes in a direction parallel to said supporting surface.