Patent ID: 6181097
Filing Date: 2001-01-30
Classification: B82Y,G05B,G11B,Y10S

Abstract:
A high precision microalignment instrument comprising:a) a central control unit;b) a coarse control unit coupled to the central control unit, the coarse control unit adapted for attachment onto an object to be aligned;c) a fine distance control unit coupled to the central control unit, said fine distance control unit comprising at least one fine distance control element, said control element adapted for attachment onto said object at a strategic position;d) a sample holder adapted to receive a substrate;e) a proximity detection unit for detecting the distance between said object and said substrate at a plurality of strategic points, said proximity detection unit electronically coupled to the central control unit for sending feedback signals;whereby the distance between the object and the substrate can be adjusted by the fine distance control unit and the coarse control unit based on the feedback signal obtained from the proximity detection unit.