06-10-2016 дата публикации
Номер: US20160291451A1
Автор:
Kee-Soo NAM,
Cheol SHIN,
Jong-Hwa LEE,
Chul-Kyu YANG,
Min-Ki CHOI,
Chang-Jun KIM,
Kyu-Jin JANG,
NAM KEE-SOO,
SHIN CHEOL,
LEE JONG-HWA,
YANG CHUL-KYU,
CHOI MIN-KI,
KIM CHANG-JUN,
JANG KYU-JIN,
NAM Kee-Soo,
SHIN Cheol,
LEE Jong-Hwa,
YANG Chul-Kyu,
CHOI Min-Ki,
KIM Chang-Jun,
JANG Kyu-Jin
Disclosed is a phase-shift blankmask for manufacturing a photomask, which can achieve a fine pattern of not greater than 32 nm, preferably not greater than 14 nm, and more preferably not greater than 10 nm. 1. A phase-shift blankmask provided with a phase-shift film and a light-shielding film on a transparent substrate ,the light-shielding film comprising multi-layered films of two or more layers containing at least one of oxygen (O) and nitrogen (N), wherein at least one of the films essentially contains oxygen (O),the film essentially containing oxygen (O) occupying 50% to 95% of the whole thickness of the light-shielding film.2. The phase-shift blankmask according to claim 1 , wherein the phase-shift film comprises one of a single-layered structure claim 1 , a multi-layered structure of two or more layers claim 1 , and a continuous film structure claim 1 , andif the phase-shift film has the multi-layered structure or the continuous film structure, an uppermost part essentially contains oxygen (O).3. The phase-shift blankmask according to claim 1 , wherein the phase-shift film has a transmissivity of 10% to 50% with respect to exposure light having a wavelength of 193 nm or 248 nm.4. The phase-shift blankmask according to claim 1 , wherein the phase-shift film and the light-shielding film comprises one or more substances among silicon (Si) claim 1 , molybdenum (Mo) claim 1 , tantalum (Ta) claim 1 , vanadium (V) claim 1 , cobalt (Co) claim 1 , nickel (Ni) claim 1 , zirconium (Zr) claim 1 , niobium (Nb) claim 1 , palladium (Pd) claim 1 , zinc (Zn) claim 1 , chromium (Cr) claim 1 , aluminum (Al) claim 1 , manganese (Mn) claim 1 , cadmium (Cd) claim 1 , magnesium (Mg) claim 1 , lithium (Li) claim 1 , selenium (Se) claim 1 , copper (Cu) claim 1 , hafnium (Hf) and tungsten (W) claim 1 , or comprises one or more substances among nitrogen (N) claim 1 , oxygen (O) claim 1 , carbon (C) claim 1 , boron (B) and hydrogen (H) in addition to that substance.5. The phase-shift ...
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