Abstract:
PROBLEM TO BE SOLVED: To provide a method of effectively compensating for a positional shift including a tilt between a substrate and a supporting structure and a vertical displacement when moving the substrate in a lithographic projection apparatus using the supporting structure. SOLUTION: By providing compliant parts (14, 26) in the supporting structure for holding and moving a substrate (W), for example, a supporting frame (18) of a robot arm (10) adaptable to the tilt and/or the vertical displacement. Clamps (20, 22, 24) that the supporting frame (18) comprises may be a Johnson-Raybeck effect type clamp that requires a stringent positional precision, and the cleaning of the inside of the projection apparatus is carried out by using only one substrate. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method capable of effectively compensating an inclination between a substrate and a support structure or a misregistration including a displacement in the vertical direction when the substrate is moved by the support structure in a lithographic projection apparatus. SOLUTION: By providing a support structure for holding and moving a substrate (W), for example, flexible sections (14, 26) in a support frame (18) of a robot arm (10), it can be adapted to the tilt and/or a displacement in the vertical direction. Clamps (20, 22, 24) provided on the support frame (18) may be a Johnson-Raybeck effect type clamp, which requires the severe position accuracy, and can perform a cleaning treatment in a projection apparatus by only one substrate. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
The present invention relates to a lithographic projection apparatus with a supporting structure to support and move an object, like a substrate (W). The supporting structure maybe a robot (8). The robot (8) has a robot arm (10) with a support frame (18) for supporting, e.g. the substrate (W). The support frame (18) has one or more clamps (20, 22, 24) for holding the object (W) during movement. The robot arm comprises one or more compliant parts (14; 26; 28). The clamp may be a Johnson-Raybeck effect type clamp with an oxidized upper surface. For better de-clamping, a RF AC decaying de-clamping voltage may be provided to the clamp. The apparatus maybe cleaned with one single substrate only.