PHASE SHIFT MASK AND METHOD FOR MANUFACTURING THE SAME, AND METHOD FOR MANUFACTURING INTEGRATED CIRCUIT

There are provided a phase shift mask with a new structure. The phase shift mask provided includes: a substrate that is transparent to irradiation light, a shielding region formed on the substrate and in which a line pattern is formed, and a first transparent region and a second transparent region l...

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1. Verfasser: HIROSHIMA MASAHITO
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:There are provided a phase shift mask with a new structure. The phase shift mask provided includes: a substrate that is transparent to irradiation light, a shielding region formed on the substrate and in which a line pattern is formed, and a first transparent region and a second transparent region located on respective opposite sides of the shielding region on the substrate, wherein a phase shifter is formed under the first transparent region, and the phase shifter has a side wall including an outward protruding bent portion. The phase shifter can be formed by, for example, irradiating and scanning a predetermined region of the substrate with femtosecond pulse laser light applied from above the substrate.