公开(公告)号：IN169623B

公开(公告)日：1991-11-23

申请号：IN462MA1987

申请日：1987-06-24

Applicant: HOLTRONIC TECHNOLOGIES LTD

Inventor： NICHOLAS JOHN PHILLIPS

IPC: G03F7/20 ,  G03H1/00 ,  G03H1/04 ,  H01L21/027 ,  H01L25/00

Abstract: A method of manufacturing integrated circuits using holographic techniques by interference between an input beam (S) and a reference beam (R) generated from laser sources (24,25). A holographic image of the object formed on a mask window (19), is formed on recording emulsion coated on a glass slab (16) by means of interference between the input beam (S) which has passed through the mask (18) and the reference beam (R) which is reflected from the surface (X) of a prism (22) in contact with the glass slab (16). In order to reproduce the holographic image on a silicon slice which replaces the mask (18), the reference beam is replayed in the reverse direction through the prism (22) such that the interference between the input beam (S) and the replayed reference beam (R) causes the holographic image to be created as a real image in the silicon slice.