Patent ID: 11880137
Assignee: APPLIED MATERIALS, INC.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A device structure comprising:
a substrate; and
a multi-layer film structure disposed on a substrate comprising:
an underlayer, the underlayer comprising an organic solvent and an acid agent selected from the group consisting of a sulfonic acid, a sulfonate, and a mixture thereof;
a photoresist layer comprising a photoacid generator disposed above the underlayer, the photoresist layer configured to move the photoacid generated from the photoacid generator substantially in a vertical direction when exposed to an electric field or a magnetic field; and
a photomask disposed above the photoresist layer, the photomask configured to expose a first portion of the photoresist layer unprotected by the photomask to a radiation light in a lithographic exposure process.