Methods of connecting an antenna to a transponder chip
View Patent ↗An antenna wire ( 210, 260, 310, 410, 510, 610, 710 ) is mounted to a substrate ( 204, 254, 304, 404, 504, 604, 704 ) so that end portions ( 210 a/b, 260 a/b, 310 a/b, 410 a/b, 510 a/b, 610 a/b, 710 a/b ) of the wire are spaced far enough apart for a transponder chip ( 208, 250, 308, 408, 508, 608, 708 ) to be positioned therebetween, such as into a recess ( 206, 256, 306, 406, 506, 606, 706 ) in the substrate. The end portions are left unmounted, as “wire bridges”, “jump loops”, or “flat loops”. The end portions may be re-positioned to be over the terminals ( 208 a/b, 258 a/b, 308 a/b, 408 a/b, 508 a/b, 608 a/b, 708 a/b ) of the chip for bonding. Or, the chip (or substrate) may be moved (such as side-to-side, or rotated) so that the chip's terminals are under the end portions of the wire for bonding. Insulation may be removed from the end portions of the wire prior to bonding.
1. Method of connecting an antenna wire to a transponder chip comprising:
providing a recess in a surface of the substrate for receiving the transponder chip;
mounting the antenna wire to a surface of a substrate so that two end portions of the antenna wire span the recess;
disposing the transponder chip into the recess, past the end portions of the antenna wire;
after disposing the transponder chip between the end portions of the antenna wire, rotating the transponder chip so that terminals of the transponder chip are in alignment with corresponding ones of the end portions of the antenna wire, for bonding thereto.
2. The method of claim 1 , wherein:
the end portions comprise wire bridges, jump loops, or flat loops.
3. The method of claim 1 , further comprising:
subsequently bonding the end portions of the antenna wire to corresponding terminals of the transponder chip.
4. The method of claim 1 , further comprising:
removing insulation from the end portions of the wire prior to bonding.
5. The method of claim 4 , further comprising:
providing slots in the substrate, under the end portions of the wire.
6. The method of claim 1 , wherein:
the recess is sufficiently large to allow for said rotation of the transponder chip while it is in the recess.
7. The method of claim 1 , wherein:
the end portions of the antenna wire are sized and shaped to permit the transponder chip to be rotated underneath them.
8. The method of claim 1 , wherein mounting the antenna wire comprises:
embedding the antenna wire in the surface of the substrate or adhesively placing the antenna wire on the surface of the substrate.
9. The method of claim 1 , wherein the substrate is a multi-layer substrate.
10. Method of connecting an antenna wire to a transponder chip comprising:
providing a recess in a surface of a substrate;
mounting the antenna wire to the surface of the substrate so that two end portions of the antenna wire span the recess;
disposing the chip in the recess, between the two end portions of the antenna wire; and
imparting at least one relative motion between the chip and the substrate so that a first terminal of the chip is positioned under a first of the two end portions of the wire for bonding thereto and so that a second terminal of the chip is positioned under a second of the two end portions of the wire for bonding thereto;
wherein:
the relative motion is imparted by moving the chip relative to a stationary substrate.
11. The method of claim 10 , further comprising:
subsequently bonding the end portions of the antenna wire to corresponding terminals of the chip.
12. The method of claim 10 , further comprising:
removing insulation from the end portions of the wire prior to bonding.
13. The method of claim 12 , further comprising:
providing slots in the substrate, under the end portions of the wire.
14. The method of claim 10 , wherein mounting the antenna wire comprises:
embedding the antenna wire in the surface of the substrate or adhesively placing the antenna wire on the surface of the substrate.
15. The method of claim 10 , wherein the substrate is a multi-layer substrate.
16. The method of claim 10 , further comprising:
removing insulation from at least a portion of the wire using a laser.
17. Method of preparing a transponder site comprising:
providing an inlay substrate;
providing a recess for receiving a chip module in a surface of the inlay substrate;
mounting an antenna wire to the surface of the inlay substrate with two end portions of the antenna wire spanning the recess;
inserting a chip module having two terminals into the recess, from the same side of the substrate as the antenna, past the end portions of the antenna wires; and
rotating the chip module in the recess so that the terminals of the chip module are in alignment with corresponding ones of the end portions of the antenna wire, for bonding thereto.
18. The method of claim 17 , further comprising:
subsequently bonding the end portions of the antenna wire to corresponding terminals of the chip module.
19. The method of claim 17 , further comprising:
removing insulation from the end portions of the wire prior to bonding.
20. The method of claim 17 , wherein:
the recess is sufficiently large to allow for said rotation of the chip module while it is in the recess.
21. The method of claim 17 , wherein mounting the antenna wire comprises:
embedding the antenna wire in the surface of the substrate or adhesively placing the antenna wire on the surface of the substrate.
22. The method of claim 17 , wherein the substrate is a multi-layer substrate.
23. The method of claim 17 , further comprising:
removing insulation from at least a portion of the wire using a laser.