Provided is a resin material for forming an underlayer film which is used to form a resist underlayer film used in a multi-layer resist process, the resin material including a cyclic olefin polymer (I), in which a temperature at an intersection between a storage modulus (G') curve and a loss modulus (G") curve in a solid viscoelasticity of the resin material for forming an underlayer film which is as measured under conditions of a measurement temperature range of 30°C to 300°C, a heating rate of 3°C/min, and a frequency of 1 Hz in a nitrogen atmosphere in a shear mode using a rheometer is higher than or equal to 40°C and lower than or equal to 200°.
本发明提供了一种用于形成底层膜的
树脂材料,该底层膜可用于形成多层光刻胶工艺中使用的光刻胶底层膜,该
树脂材料包括环
烯烃
聚合物 (I)、其中,用于形成底层膜的
树脂材料的固体粘弹性中的存储模量(G')曲线和损失模量(G")曲线的交点温度高于或等于 40°C,且低于或等于 200°C;该固体粘弹性是在测量温度范围为 30°C 至 300°C、加热速率为 3°C/min 和频率为 1 Hz 的条件下,在
氮气环境中使用流变仪以剪切模式测得的。