Patent ID: 6891609
Filing Date: 2005-05-10
Classification: H01L

Abstract:
1. A measurement box comprising: an enclosure in which is arranged a measurement module for measuring particularly the surface of wafers, said measurement module comprising a displaceable measuring head that is equipped with a miniaturized measuring device, said measurement module further comprising a plane table with a rotatable wafer support, wherein the enclosure has at least one loading opening for wafers to pass through, as well as a ventilation device, wherein the ventilation device is a ventilation grille arranged in a sidewall or at least one adjustable pressure relief valve, and wherein pressure in a wafer processing tool to which the measurement module is coupled is positive, and air, due to a pressure difference, flows out of the wafer processing tool through the loading opening into the measurement box and subsequently out through the ventilation device of the measurement box when the loading opening is open.