Patent ID: 8967484
Filing Date: 2015-03-03
Classification: B29C,B29L,G06K,H01L,Y10T

Abstract:
1. An RFID tag that performs a wireless communication, comprising: an antenna part formed by a lead frame; a semiconductor device mounted on the lead frame; a first injection molded thermoplastic resin formed on both surfaces of the lead frame so that the semiconductor device is filled, and including a first set of convex portions at both sides of the lead frame opposite to each other and a second set of convex portions at side surfaces of the first injection molded thermoplastic resin; and a second injection molded thermoplastic resin formed on both surfaces of the lead frame aligned, in a vertical direction, with surfaces of the first set of convex portions of the first injection molded thermoplastic resin, the second injection molded thermoplastic resin being aligned, in an in-plane direction, with surfaces of the second set of convex portions of the first injection molded thermoplastic resin at the side surfaces, wherein the first injection molded thermoplastic resin includes a portion of the antenna part disposed inside a concavoconvex portion of a mold, the antenna part aligned in the vertical direction, wherein the aligned antenna part inside the concavoconvex portion of the mold defines a through hole in the first injection molded thermoplastic resin, wherein the part of the antenna part is exposed in the through hole, wherein the through hole and the part of the antenna part are filled with the second injection molded thermoplastic resin, wherein surfaces of the second injection molded thermoplastic resin and the surfaces of the first and second set of convex portions of the first injection molded thermoplastic resin constitute flat outer surfaces of a package of the RFID tag, and wherein the entirety of the antenna part is filled with the first and second injection molded thermoplastic resins.