Resist lower-layer composition containing thermal acid generator, resist lower layer film-formed substrate, and patterning process
申请人:Ohsawa Youichi
公开号:US20100119970A1
公开(公告)日:2010-05-13
There is disclosed a resist lower-layer composition configured to be used by a multi-layer resist method used in lithography to form a layer lower than a photoresist layer acting as a resist upper layer film, wherein the resist lower-layer composition becomes insoluble or poorly-soluble in an alkaline developer after formation of the lower layer, and
wherein the resist lower-layer composition comprises, at least, a thermal acid generator for generating an acid represented by the general formula (1) by heating at a temperature of 100° C. or higher.
RCOO—CH
2
CF
2
SO
3
−
H
+
(1)
There can be provided a resist lower-layer composition in a multi-layer resist method (particularly, a two-layer resist method and a three-layer resist method), which composition is used to form a layer lower than a photoresist layer acting as a resist upper layer film, which composition becomes insoluble or poorly-soluble in an alkaline developer after formation of the lower layer, and which composition is capable of forming a resist lower layer film, intermediate-layered film, and the like having a higher anti-poisoning effect and exhibiting a lower load to the environment.
揭示了一种抗性下层组合物,配置为在光刻中使用的多层抗性方法中使用,用于形成低于作为抗性上层膜的光刻胶层的一层,其中抗性下层组合物在形成下层后变得不溶解或难溶解于碱性显影剂中,且抗性下层组合物至少包括用于通过在100°C或更高温度下加热生成由通式(1)表示的酸的热酸发生剂。
可以提供一种抗性下层组合物,用于多层抗性方法(特别是双层抗性方法和三层抗性方法),该组合物用于形成低于作为抗性上层膜的光刻胶层的一层,该组合物在形成下层后变得不溶解或难溶解于碱性显影剂中,并且该组合物能够形成具有更高抗毒性效果并表现出对环境负荷较低的抗性下层膜、中间层膜等。