Patent ID: 6682870
Filing Date: 2004-01-27
Classification: G03F,Y10S

Abstract:
A blank comprisinga substrate having a base and a working surface; a buffer layer having a working surface and a base wherein said base of said buffer layer is affixed to said working surface of said substrate wherein said buffer layer made from a low-Z material that is substantially stable under exposure to and capable of absorbing secondary X-rays emissions generated by the substrate upon exposure to a high energy x-ray radiation source, wherein the buffer layer comprises a layer of a polyamide and a layer of a hard-baked resist; and a resist affixed to the working surface of said buffer layer, thereby forming said blank wherein upon exposure of said blank to a high energy x-rays radiation source the resist is chemically modified by said high energy x-ray radiation such that the chemically modified resist can be removed in subsequent process without removal of the unexposed resist and the buffer layer absorbs a sufficient amount of secondary electron emissions so that portion of the resist not exposed directly to the high energy x-ray radiation source is not chemically modified by exposure to the secondary electron emissions emanating from the substrate.