Photoresist composition for resist flow process, and process for forming contact hole using the same

摘要

Photoresist compositions which are useful in a resist flow process are disclosed. A process for forming a contact hole pattern using the disclosed photoresist compositions is also disclosed. The disclosed photoresist resin includes a mixture of two or more polymers. Preferably, a mixture of a first copolymer and a second copolymer are cross-linked, and thus it prevents a contact hole from being collapsed due to over flow which is typically observed during a conventional resist flow process. In addition, the disclosed photoresist compositions allow formation of uniform sized patterns.