An integrated functional multi-layer structure (100, 300, 500, 600, 700, 800, 900, 1000, 1100, 1300, 1400, 1500) comprising a flexible, preferably 3D formable,
thermoplastic substrate film (102), and a lighting module (110, 400) disposed on the substrate film (102) and preferably electrically connected to a
circuit design thereon, said lighting module (110, 400) comprising: a circuit board (112) for receiving
electronics; and a circuit (114) disposed on the circuit board, the circuit (114) including at least one
light source, and optionally including at least one LED. and a
thermoplastic layer (108) comprising: a
thermoplastic layer (108) at least laterally surrounding, and optionally also at least partially covering, a lighting module (110, 400), wherein a circuit (114) on a circuit board (112) of the lighting module (110, 400) including at least one
light source is configured to be electrically and thermally connected by means of at least one connecting material (116A, 116B) disposed at some points to the remaining structure at the side or below the circuit board, between them, preferably disposed at least around the periphery of the circuit board (112). Related manufacturing methods are presented.