Patent ID: 8524136
Filing Date: 2013-09-03
Classification: B29C,B82Y,G03F

Abstract:
1. An imprint apparatus, comprising: a monolithic imprint template used in microlithography or nanolithography, the imprint template including a first surface having a sub-micron pattern feature and a second surface at a fixed non-zero depth from the first surface, the depth being perpendicular to the first surface; and an imprint template cover comprising a seal, wherein the cover is directly attached, in use, to the imprint template at the second surface such that the seal contacts the second surface and provides a gas-tight enclosure between the cover and the imprint template, and wherein the cover is configured such that, in use, the cover extends around the pattern feature, has a surface over and facing the pattern feature, and does not contact the pattern feature, and such that, when imprinting using the imprint template, the cover is no longer over the pattern feature, wherein the seal has a non-zero height that is less than the fixed non-zero depth.