Optically transparent adhesive having a microstructured

Including a first major surface and a second major surface, an optically clear adhesive having a microstructured, at least one of the first major surface and a second major surface, at least one planar dimension (x- in y), comprising a microstructured surface, optically clear adhesive is disclosed having a microstructure. Optically clear adhesive with a microstructure, in the lamination temperature, has a tan delta value of at least about 0.3, or not crosslinked, or are lightly crosslinked. Microstructured surface has a depth of about 5 to about 80 [mu] m, it may comprise a recess. Without the use of vacuum, a method of laminating is presented the first and second substrates. The optical method, comprising the steps of providing an optically transparent adhesive having a fine structure, a step of removing the release liner from the first side of the optically transparent adhesive having a microstructure, the microstructure the manner first side of a transparent adhesive, the step of contacting the surface of the first substrate, the optically clear adhesive with an optically transparent release liner microstructure having a fine structure It is removed from the second side, and a step of exposing the microstructured surface, and a step of contacting the microstructured surface and the second substrate surface. .FIELD 4a