Patent ID: 11906774
Assignee: TACTOTEK OY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G | IPC F  G

Claim 0:
1. A method for manufacturing an integrated optically functional multilayer structure, comprising:
obtaining a flexible substrate film provided with a circuit design comprising at least a number of electrical conductors additively produced on the substrate film;
arranging a plurality of top-emitting, bottom-installed light sources provided upon a first side of the substrate film;
producing for each light source of the plurality of light sources, optically transmissive plastic layer upon the first side of the substrate film, said plastic layer at least laterally surrounding or neighbouring the light source, wherein producing the plastic layer comprises providing a masterbatch comprising selective wavelength resin in a selected let-down ratio;
providing a reflector design comprising at least one material layer configured to reflect, the light emitted by the plurality of light sources and incident upon the reflector design; and
providing at least one further material layer having a lower refractive index than the plastic layer so that said at least one further material layer and said plastic layer are optically connected so as to redirect at least part of the light emitted by at least one of the plurality of light sources, propagated within the plastic layer and incident upon the at least one further material layer back into the plastic layer by total internal reflection.