Invention Grant
US08043791B2 Positive photosensitive composition, pattern forming method using the composition and resin for use in the composition 有权
正型感光性组合物,使用组合物中使用的组合物和树脂的图案形成方法

Positive photosensitive composition, pattern forming method using the composition and resin for use in the composition
Abstract:
A positive photosensitive composition ensuring wide exposure latitude and reduced line edge roughness not only in normal exposure (dry exposure) but also in immersion exposure, a pattern forming method using the positive photosensitive composition, and a novel resin contained in the positive photosensitive composition are provided, which are a positive photosensitive composition comprising (A) a resin having a specific lactone structure in the side chain and being capable of increasing the solubility in an alkali developer by the action of an acid and (B) a compound capable of generating an acid upon irradiation with an actinic ray or radiation, a pattern forming method using the positive photosensitive composition, and a novel resin contained in the positive photosensitive composition.
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