Block mask and charged particle beam exposure method and apparat

Details Block mask and charged particle beam exposure method and apparat Block mask and charged particle beam exposure method and apparat

1995-08-09

1998-12-15

Angebranndt, Martin

Radiation imagery chemistry: process, composition, or product th

Radiation modifying product or process of making

Radiation mask

430394, 430 30, 430 22, 25049222, 2504922, H01L 2130

Patent

active

058494367

ABSTRACT:
A block mask for making a charged particle beam exposure using block exposure includes a plurality of block mask patterns respectively including repeating patterns, where the block mask patterns are arranged in an order dependent on an exposure sequence, at least one first block mask pattern group made up of arbitrary ones of the block mask patterns which are arranged in a predetermined direction, and at least one second block mask pattern group made up of the arbitrary ones of the block mask patterns which are arranged in a direction opposite to the predetermined direction. The second block mask pattern group is arranged adjacent to the first block mask pattern group.

REFERENCES:
patent: 4424450 (1984-01-01), Ward et al.
patent: 4445039 (1984-04-01), Yew
patent: 5288567 (1994-02-01), Sakamoto et al.
patent: 5432314 (1995-07-01), Yamazaki et al.
patent: 5674413 (1997-10-01), Pfieffer et al.

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