摘要:
An immersion exposure process-use resist protection film forming material formed on a resist film, the material having characteristics of being transparent to an exposure light, having practically no miscibility with an immersion exposure-use liquid and causing no mixing with the resist film; a protection film formed by this material; a composite film having the resist film; and a resist pattern forming method using them. These can prevent the degeneration of a resist film during immersion exposing and the degeneration of a liquid being used at the same time, and can form a high-resolution resist pattern using immersion exposing.
摘要:
An immersion liquid for immersion exposure process wherein a resist film is exposed through a liquid is disclosed. The immersion liquid is composed of a fluorine-containing liquid that is transparent to the exposure light used for the exposure process and has a boiling point of 70-270˚C. A resist pattern forming method which comprises a step wherein such an immersion liquid is directly placed on a resist film or a protective film is also disclosed. The immersion liquid prevents changes of properties in both of the resist film and the liquid during the immersion exposure process, thereby enabling to form a high-resolution resist pattern through immersion exposure.