The polymer-based part contains products of the hardening process of the product.

Abstract

The refractive index refers to the components based on the polymer, including refractive index ranging from approximately 1.49 to 1.55. According to some design options, the polymer-based superstructure consists of the hardening product of 45-75% by weight of a bifunctional urethane-acrylate oligomer with 25-55% by weight of a bifunctional crosslinker and optionally an active diluent. According to other design options, the polymer-based superstructure consists of the hardening product of 75-100% by weight of an active diluent and optionally one or more bifunctional urethane-acrylate oligomers and / or bifunctional crosslinkers. Adhesives include refractive indices ranging from approximately 1.49 to approximately 1.55. According to some designations, the adhesive consists of products of heating 10–35% by weight of siloxane with a silane-hydride terminal and 65–90% by weight of siloxane with a vinyl terminal. According to some designations, the adhesive consists of products of irradiating thiol-containing siloxane and an optical initiator with at least one wavelength of light for which the optical initiator is sensitive. Foldable devices may include a polymc-based upper and / or adhesive.