Patent ID: 6249337
Filing Date: 2001-06-19
Classification: G03F,H05K

Abstract:
An alignment mechanism for light exposure for use in a light exposure apparatus having a transferring mechanism, which transfers a work; a light exposure table provided together with the transferring mechanism which supports the work and which actuates in the vertical direction; an upper frame placed on an upper side of the light exposure table, which supports a mask in order to project a pattern possessed by the mask; and a vacuum absorption mechanism for bringing the work into contact with the mask when the light exposure table ascends,said alignment mechanism for light exposure further possessing a pre-alignment mechanism for pre-aligning the work on said light exposure table, and a mask alignment mechanism for aligning the position of the mask to the position of the work; andsaid pre-alignment mechanism possessing concave grooves formed on the surface of the light exposure table at the side for placing the work; revolving portions placed on the circumferences of the light exposure table and moving along said concave grooves; supporting and pushing portions which support said revolving portions; and driving portions which actuates said supporting and pushing portions.