MASK BLANKS, PHASE SHIFT MASK, AND METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE

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United States of America Patent

SERIAL NO

15554335

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Abstract

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A mask blank including a phase shift film is provided, wherein the phase shift film has a predetermined transmittance and a predetermined phase difference with respect to exposure light of an ArF excimer laser, and it is relatively easy to detect an etching end point for detecting a boundary between the phase shift film and a transparent substrate upon the EB defect repair.

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Patent Owner(s)

Patent OwnerAddress
HOYA CORPORATIONJAPAN'S TOKYO SHINJUKU FELL 2 CHOME 7 TIMES 5

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
KOMINATO, Atsushi Tokyo, JP 35 146
NOZAWA, Osamu Tokyo, JP 129 1014

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