Patent ID: 9019183
Filing Date: 2015-04-28
Classification: G02B

Abstract:
1. A display device comprising: a plurality of display elements; an optical propagation region including a light guide in which light is guided via total internal reflection, said optical propagation region further including turning features configured to redirect said light out of said optical propagation region and towards the plurality of display elements; and an optical isolation layer coupled to the optical propagation region, the optical isolation layer positioned between the plurality of display elements and the optical propagation region, the optical isolation layer positioned forward of a viewing side of the display elements, the optical isolation layer including a matrix and microstructure, wherein the matrix extends from the top to the bottom of the optical isolation layer, wherein the microstructure is configured to provide an optical loss structure disposed forward of the viewing side of the display elements, at least a portion of the optical isolation layer having an index of refraction less than an index of refraction of the optical propagation region, the at least a portion of the optical isolation layer configured such that light is totally internally reflected in said optical propagation region without utilizing an air gap layer disposed adjacent to the optical propagation region and between the optical propagation region and the display elements, wherein the optical isolation layer is adjacent to the display elements and adjacent to the optical propagation region.