METHOD FOR MAKING PHOTO-TEMPLATE BLANKS Russian patent published in 2007 - IPC H05K3/26 

Abstract RU 2292679 C2

FIELD: micro-electronics, in particular, method for making photo-template blanks.

SUBSTANCE: method includes preparation of masking layer of iron oxide in alkali oxidizing compound, containing hypochlorite, while maintaining their constant concentration, thus making it possible to execute surface preparation process with etching of surface-adjacent layer due to generation of atomic oxygen during decomposition of hypochlorite to following operation of applying resist.

EFFECT: increased efficiency of washing off of masking layers based on iron oxide.

2 cl, 1 tbl

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RU 2 292 679 C2

Authors

Nikitin Sergej Alekseevich

Dates

2007-01-27Published

2005-02-18Filed