Patent ID: 8673422
Filing Date: 2014-03-18
Classification: G02F,Y10T

Abstract:
1. A process for protecting an external face of an electro-optical device, the external face comprising an optical element formed by an optical film or an optical film multilayer, said optical element being adhesively bonded to an optically transparent substrate and set back from an edge of the substrate, the process comprising: encapsulating the optical element by adhesively bonding an optically transparent protective cover to the external face, an area of the protective cover being substantially the same as an area of the substrate, wherein the adhesive bonding of the protective cover comprises depositing adhesive beforehand, said depositing adhesive being carried out in two steps, comprising: a first step comprising deposition of uncured adhesive on a surface of parts of the substrate that extend beyond the optical element, followed by curing, thus forming a marginal adhesive strip that extends from an edge of the optical element to the edge of the substrate and that takes up a height difference between the substrate and the optical element; and a second step comprising deposition of uncured adhesive on a surface of an entire front side of the electro-optical device, adhesively bonding the protective cover, and curing.