Photomask and fabrication method therefor

A method of manufacturing a mask includes depositing an end-point layer over a light transmitting substrate, depositing a phase shifter over the end-point layer, depositing a hard mask layer over the phase shifter, and removing a portion of the hard mask layer and a first portion of the phase shifte...

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Bibliographische Detailangaben
Hauptverfasser: Wang, Hsuan-Wen, Hsu, S. C, Lai, Chien-Hung, Lin, Cheng-Ming, Wei, Shao-Chi, Chang, Hao-Ming, Chu, Yuan-Chih, Yang, Min-An
Format: Patent
Sprache:eng
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Zusammenfassung:A method of manufacturing a mask includes depositing an end-point layer over a light transmitting substrate, depositing a phase shifter over the end-point layer, depositing a hard mask layer over the phase shifter, and removing a portion of the hard mask layer and a first portion of the phase shifter to expose a portion of the end-point layer. The end-point layer and the light transmitting substrate are transparent to a predetermined wavelength.