and o-quinone azide photoresists are their representative products.

Positive photoresist, also known as positive photoresist, refers to a photoresist in which the unexposed portion of the coating can be retained to form an image after exposure and development in the photolithography process. Positive photoresist has the characteristics of good chemical resistance, good adhesion, and high resolution. It is widely used in biomedicine, optoelectronics,…