Mask aligner is used to:
I. Alignment of wafer to mask
II. Coat photoresist on wafer
III. Expose the coated wafer
IV. Developing the pattern, printed on wafer
I, II
II, III
I, III
III, IV
I. Alignment of wafer to mask
II. Coat photoresist on wafer
III. Expose the coated wafer
IV. Developing the pattern, printed on wafer
I, II
II, III
I, III
III, IV