Smart card simultaneously having two read/write mode matrixes and method for producing same
A smart card with two read-write modes includes antenna layer, and an antenna and a chip module circuits on the antenna layer, wherein the antenna and the chip module circuit are electrically connected via an elastic conductive device. The invention also provides a manufacturing method of the aforesaid smart card with two read-write modes, which includes steps of: embedding an antenna on a back side or a front side of an antenna layer; after completing embedding on the antenna layer, add bedding sheets, printed sheets and protection films respectively above and underneath the antenna layer, then laminating to obtain a card base carrier; cutting card from the treated whole-sheet card base carrier to obtain a card base, and milling slots on the obtained card base, then finally encapsulating.
1. A manufacturing method of a smart card with two read-write modes, comprising steps of:
(1) embedding: embedding an antenna on a back side or a front side of an antenna layer, and setting a wire end of the antenna in an area corresponding to circuit contact points of a chip module circuit;
(2) laminating: after completing embedding on the antenna layer, add bedding sheets, printed sheets and protection films respectively above and underneath the antenna layer, then laminating to obtain a card base carrier;
(3) cutting card and slotting: cutting the card from the treated whole-sheet card base carrier to obtain a card base; milling slot in the obtained card base: firstly milling a first slot (B 5 ) on a location for insetting of a chip module, with a depth thereof equaling to a thickness of a chip module lead frame, then milling a second slot (B 6 ) in a center of the first slot (B 5 ); adopting a milling cutter with a special sensor for milling a location; while milling the second slot (B 6 ) using the milling cutter, real-time detecting whether to mill to an embedded copper wire layer; when the wire end of the embedded wire is touched, immediately stopping by a preset program and memorizing a value; then milling third and fourth slots (B 3 ) on locations for the elastic devices, depths of the third and fourth slots (B 3 ) are decided by the memorized value; and
(4) encapsulating: at first insetting the elastic devices into the third and fourth slots (B 3 ) and connecting with the wire ends of the antenna, then insetting the chip module circuit into the first slot (B 5 ) and the second slot (B 6 ) at the location of the elastic conductive device corresponding to the circuit contact points.
2. The manufacturing method as described in claim 1 , wherein: in the step (1), the wire end of the antenna is made into a contact pad through reciprocating windings, which is located in the area corresponding to the circuit contact points of the chip module circuit.