Patent ID: 7662664

Claim:
A method of producing an electronic circuit in a package-on-package configuration, the configuration comprising: a lower subassembly with a first electronic element, a first wiring carrier, a first housing with a redistribution layer and an arrangement of solder balls disposed on the redistribution layer and an upper subassembly with a second electronic element, the upper subassembly being mounted on the lower subassembly, the method comprising: applying a radiation-crosslinking thermoplastic adhesive to one of an upper side of a first electronic element and a side of the first housing facing the first electronic element; mounting the first housing with the redistribution layer onto the first electronic element, with a contact area between the first electronic element and the first housing being wetted with the adhesive; soldering an upper subassembly with a second electronic element onto the redistribution layer when the adhesive is in a non-curing state, thereby forming an arrangement including: the upper subassembly with the second electronic element, the first housing with the redistribution layer, the adhesive and the first electronic element; and irradiating the arrangement such that a hardening of the adhesive results, thereby forming a solid adhesive bond between the first electronic element and the first housing.