发明名称 |
SEMITRANSMITTING FILM, PHOTOMASK BLANK AND PHOTOMASK |
摘要 |
<p>The present invention provides an optically semitransmissive film that has a near-zero phase shift, has a desired transmissivity, and is relatively thin; a novel phase-shift mask that uses the optically semitransmissive film; a photomask blank that can [be used to] manufacture the phase-shift mask; and a method for designing the optically semitransmissive film. The film is formed on a translucent substrate and transmits a portion of light having a desired wavelength », wherein the film has at least one phase-difference reduction layer that fulfills the following functions. Specifically, the phase-difference reduction layer is a layer that has a refractive index n and a thickness d that satisfy the expression 0 < d ‰ »(2(n-1)), and is a layer in which the value ”¸ (hereinafter referred to as phase difference ”¸ (units: degrees)) obtained by subtracting the phase of light (hereinafter referred to as layer-referenced light) in the absence of a layer from the phase of light (hereinafter referred to as layer-transmitted light) transmitted through a layer is less than the value ”¸ 0 = (360/»)×(n - 1)×d (hereinafter referred to as the phase difference ”¸ 0 (units: degrees)) calculated based on the difference in the optical distance between the layer-transmitted light and the layer-referenced light.</p> |
申请公布号 |
EP1783546(B1) |
申请公布日期 |
2014.03.05 |
申请号 |
EP20050749063 |
申请日期 |
2005.06.10 |
申请人 |
HOYA CORPORATION |
发明人 |
SHIOTA, YUKI;NOZAWA, OSAMU |
分类号 |
G03F1/26;G03F1/29;G03F1/32;G03F1/34;G03F1/50;G03F1/54;G03F1/68;G03F1/80;H01L21/027 |
主分类号 |
G03F1/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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