A method for manufacturing an optical assembly comprises providing a first substrate having a first surface, providing a second substrate having a second surface facing the first surface, and forming a patterned microbump on at least a select one of the first surface and the second surface. The method further comprises applying an adhesive to the at least select one of the first surface and the second surface in a region proximate the patterned microbump, and attaching the first substrate to the second substrate by placing the first surface and the second surface in close proximity to one another such that the adhesive contacts both the first surface and the second surface, and wherein the adhesive is held within a preselected area by the patterned microbump.