Patent ID: 9046785
Filing Date: 2015-06-02
Classification: G03F,H01L

Abstract:
1. A photoresist comprising: a polymer having a backbone that is breakable; and a photo acid generator that is free of bonding from the polymer, wherein the backbone includes a first number of repeating segments, the first number of repeating segments repeating more than once, with each segment including a carbon chain and a linking group that is coupled to the carbon chain and breakable from the carbon chain, the carbon chain having a second number of carbon atoms that is greater than one, and each segment further including a chemical that is connected to the carbon chain and the linking group, and wherein the polymer has a multidendate form when the backbone is not broken and a monodendate form after the backbone is broken by a breaking process, and wherein the carbon chain, linking group and the chemical are all located in the backbone of the polymer.