Thales

Thomson Licensing

Bernard Meunier

Thierry Kretz

Prénoms Thierry Kretz

A process for protecting the external face of an electro-optical device, the external face comprising at least one optical film adhesively bonded to a transparent substrate and set back therefrom, comprises encapsulating the optical element between the substrate and a transparent cover that is substantially the same size as the substrate. The process comprises adhesive bonding of the cover, the adhesive bonding being achieved by depositing uncured adhesive in two steps, namely a first step that is used first to take up the step difference between the substrate and the optical element, and a second step that is used to adhesively bond the protective cover. Smaller respective thicknesses of adhesive shrink in each step and thus, in the end, the total shrinkage is limited and the quality of the product is improved.

Process for encapsulating an electro-optical device

An LCD screen comprises an optical stack of at least one optical film against the rear polarizer placed at the rear of the plate of the LCD module. That face of the optical film overlaid against the polarizer is rough. A bead of glue is dispensed over the thickness of the rim of the stack over the whole of its perimeter. Depending on whether or not the polarizer is of the hardened type, the screen is encapsulated in a mechanical structure comprising an outer frame and an inner frame clamping the plate and the rear polarizer or the plate alone, the bead of glue being dispensed in the space between the inner frame and the stack.

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Saint Etienne de Saint Geoirs, France

Bernard Meunier