发明名称 MULTI-GRAY SCALE PHOTOMASK, MANUFACTURING METHOD OF MULTI-GRAY SCALE PHOTOMASK, AND PATTERN TRANSFER METHOD
摘要 A light-shielding portion is formed by laminating a light semi-transmitting film, a phase-shift adjusting film, and a light-shielding film on a transparent substrate in this order. A light semi-transmitting portion is obtained by forming the light semi-transmitting film on the transparent substrate. A light transmitting portion is obtained by exposing the transparent substrate. At a boundary between the light-shielding portion and the light transmitting portion, a phase shifter portion is formed by partially exposing the phase-shift adjusting film on the light semi-transmitting film. A difference between a phase-shift amount when exposure light passes through the phase shifter portion and a phase-shift amount when the exposure light passes through the light transmitting portion is not smaller than 90 degrees and not greater than 270 degrees.
申请公布号 KR101306476(B1) 申请公布日期 2013.09.16
申请号 KR20110022282 申请日期 2011.03.14
申请人 发明人
分类号 G03F1/26;G03F1/28;G03F1/54;G03F1/70;G03F7/20;H01L21/027 主分类号 G03F1/26
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