Patent ID: 9046793
Filing Date: 2015-06-02
Classification: B82Y,G03F

Abstract:
1. A light transmissive mold used for imprinting a pattern onto a material applied on a semiconductor workpiece, the mold being formed from a substrate of a material, the mold comprising: a first outer surface comprising a patterned region and a non-patterned region, the non-patterned region having a surface at a first level, the patterned region having a pattern to be imprinted onto the material, the pattern including a concave portion and a convex portion, the convex portion being disposed at the first level of the non-patterned region; a second outer surface located on the mold opposite from the first outer surface in a thickness direction of the mold; a stepped portion being disposed inwardly from the first outer surface towards the second outer surface in the thickness direction of the mold, such that the stepped portion is disposed at a second level that is different than that of the non-patterned region with respect to the thickness direction of the mold; and a third outer surface provided on the stepped portion, the third outer surface having an alignment structure provided for alignment between the mold and the workpiece, the alignment structure (a) being made of the same material as that of the substrate of the mold, and (b) having a surface that is disposed at a third level that is different than that of each of (i) the stepped portion with respect to the thickness direction, and (ii) the convex portion of the pattern of the patterned region of the first outer surface with respect to the thickness direction, with a distance from the surface of the alignment structure to the convex portion of the pattern of the patterned region of the first outer surface that is not less than 2 μm and not greater than 3 mm, such that the alignment structure does not contact the applied material through the imprinting.