Patent ID: 6426860
Filing Date: 2002-07-30
Classification: G03F,H01L

Abstract:
Device for holding a substrate in an exposure system in which the substrate is positioned on a table movable in the X and Y coordinates of an X, Y plane and which, between a table surface and the substrate, provides metering means to adjust the distance and to align the substrate in relation to an exposure optics, from where a corpuscular radiation is directed right-angled onto a substrate surface, corresponding to the Z coordinate, whereintwo mounting plates aligned parallel to the X, Y plane are provided, adjusted upon the table in a direction to the exposure optics and with different distances to the table surface, the first mounting plate of which being directly connected to the table; and the second mounting plate being in connection with the first mounting plate through at least one holding device, and with a bearing plane for the substrate being designed on that side of the second mounting plate turned to the exposure optics.