| abstract |
A positive working photosensitive composition which is useful in the manufacturing step of a semiconductor such as IC, the manufacture of a circuit board such as liquid crystals and thermal heads, and other fabrication steps and has an excellent resolution and line edge roughness, and a method for forming a pattern using the same, are provided, which are a photosensitive composition containing (A) a resin having a repeating unit having a specific group, whose solubility in an alkaline developer increases by the action of an acid, and a method for forming a pattern using the same. |