Patent ID: 11862504
Assignee: FURUKAWA ELECTRIC CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 0:
1. A mask-integrated surface protective tape, comprising a substrate film and a mask material layer,
wherein the mask material layer is attached to the substrate film through an adhesive layer interposed therebetween, and
wherein a parallel ray transmittance of the mask material layer at a wavelength of 355 nm is 30% or less,
wherein the mask material layer includes a (meth)acrylic copolymer as well as one of the following materials (i) to (iv):
(i) an ultraviolet absorber of triazine skeleton represented by the following formula:, (ii) an ultraviolet absorber of triazole skeleton represented by the following formula:, (iii) an ultraviolet absorbing polymer having a triazine skeleton in the side chain represented by the following formula:, (iv) an ultraviolet absorbing polymer having a triazole skeleton in the side chain represented by the following formula, , and
wherein:
(a) in the case that the mask material layer includes one of materials (i) and (ii), a content thereof is from 0.1 to 5.0 mass parts with respect to 100 mass parts of the (meth)acrylic copolymer so that the parallel ray transmittance of the mask material layer at a wavelength of 355 nm becomes 30% or less, and
(b) in the case that the mask material layer includes one of the materials (iii) and (iv), a content thereof is from 5.0 to 50.0 mass parts with respect to 100 mass parts of the (meth)acrylic copolymer so that the parallel ray transmittance of the mask material layer at a wavelength of 355 nm becomes 30% or less.