PHASE SHIFT BLANK MASK AND PHOTOMASK
The present invention relates to a phase shift blank mask that includes a light blocking film and a phase shift film on a transparent substrate thereof. The light blocking film is made of a chrome-tin (Cr-Sn) compound including chrome (Cr) and tin (Sn) to make thickness of the light blocking film th...
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Format: | Patent |
Sprache: | eng ; kor |
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Zusammenfassung: | The present invention relates to a phase shift blank mask that includes a light blocking film and a phase shift film on a transparent substrate thereof. The light blocking film is made of a chrome-tin (Cr-Sn) compound including chrome (Cr) and tin (Sn) to make thickness of the light blocking film thin. According to the present invention, the phase shift film and the light blocking film can be formed to be thin; and the phase shift film and the light blocking film can be finely patterned by using a hard film. Therefore, a micro-pattern of 32 nm or less can be formed; and excellent accuracy of the pattern can be obtained. |
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