| 摘要 |
<p>The present invention provides a method for producing a water insoluble, aqueous alkali soluble novolak resins fractions having consistent molecular weight and superior performance in photoresist composition, by fractionating novolak resins according to molecular weight. A method is also provided for producing photoresist composition from such a novolak resin and for producing semiconductor devices using such a photoresist composition.</p> |
