Method for making an electronic label and electronic label obtained by said method
A method of making an electronic label including a chip ( 1 ) provided with two contact strips ( 2, 3 ) onto which a conducting wire ( 4 ) is welded in a single operation. The segment of conducting wire ( 4 ) forming the antenna is then cut between the two contact strips ( 2, 3 ) of chip ( 1 ). The group of chip and antenna thus realized may then be encapsulated between two sheets of a fibrous or plastic material.
1. Method of making an electronic label comprising an electronic chip ( 1 ) provided with two contact strips ( 2 , 3 ) and an antenna formed from conducting wire ( 4 ), comprising:
placing the chip ( 1 ) on a support piece so that the contact strips ( 2 , 3 ) of said chip are situated on the side opposite to that in contact with the support piece;
taking conducting wire ( 4 ) from a reel and placing it on the support such that at least one portion is positioned facing the two contact strips of the chip ( 1 ); and
welding the conducting wire ( 4 ) in a single welding operation onto the two contact strips ( 2 , 3 ) to form the antenna of the electronic label,
wherein the welding of the conducting wire or wires ( 4 ) onto the contact strips ( 2 , 3 ) is done with a welding electrode ( 5 ) having an active portion with an end, and at the end of its active portion a recess ( 6 ), such that the recess ( 6 ) has a width that essentially corresponds to the gap between the two contact strips ( 2 , 3 ) enabling the welding electrode ( 5 ) to weld the antenna to the contact strip but not welding the wire in the gap between the contact strips.
2. Method of making an electronic label according to claim 1 , further comprising cutting a portion of the conducting wire ( 4 ) forming the antenna situated between the two contact strips ( 2 , 3 ) above chip ( 1 ).
3. Method of making an electronic label comprising an electronic chip ( 1 ) provided with two contact strips ( 2 , 3 ) and an antenna formed of conducting wire ( 4 ) comprising:
cutting the conducting wire ( 4 ) into two segments, at least one portion of each of the two segments of the conducting wire is positioned facing a contact strip ( 2 , 3 ) of the chip ( 1 );
welding the two segment portions in a single welding operation onto the two contact strips ( 2 , 3 ) of chip ( 1 ) to form the antenna of the electronic label,
wherein the welding of the conducting wire or wires ( 4 ) onto the contact strips ( 2 , 3 ) is done with a welding electrode ( 5 ) having an active portion with an end, and at the end of its active portion a recess ( 6 ), such that the recess ( 6 ) has a width that essentially corresponds to the gap between the two contact strips ( 2 , 3 ) enabling the welding electrode ( 5 ) to weld the antenna to the contact strip but not welding the wire in the gap between the contact strips.
4. Method of making an electronic label according to claim 1 , further comprising integrating the chip ( 1 ) provided with its antenna ( 4 ) between two sheets of a fibrous or plastic material.
5. Electronic label comprising a chip ( 1 ) and an antenna consisting of a conducting wire ( 4 ) welded onto the contact strips ( 2 , 3 ) of chip ( 1 ), characterized in that it is made by the method of claim 1 .
6. Method of making an electronic label according to claim 1 , wherein the single welding operation simultaneously welds the conducting wire ( 4 ) to the two contact strips ( 2 , 3 ) of the chip ( 1 ).
7. Method of making an electronic label according to claim 1 , wherein the recess ( 6 ) of the welding electrode ( 5 ) has a depth essentially corresponding to a height of the two contact strips ( 2 , 3 ) of the chip ( 1 ).
8. Method of making an electronic label according to claim 1 , further comprising cutting a portion of the conducting wire ( 4 ) forming the antenna situated between the two contact strips ( 2 , 3 ) into two segments before the step of welding.
9. Method of making an electronic label according to claim 8 , wherein after the step of welding the two segments of the conducting wire ( 4 ) between the contact strips ( 2 , 3 ) exhibit the configuration of a circular arc facing outward from the chip ( 1 ).
10. Electronic label comprising a chip ( 1 ) and an antenna consisting of a conducting wire ( 4 ) welded onto the contact strips ( 2 , 3 ) of chip ( 1 ), characterized in that it is made by the method of claim 3 .
11. Method of making an electronic label according to claim 3 , further comprising integrating the chip ( 1 ) provided with its antenna ( 4 ) between two sheets of a fibrous or plastic material.
12. Welding electrode ( 5 ) for realizing the method of claim 3 , wherein the recess ( 6 ) of the welding electrode ( 5 ) has a depth essentially corresponding to a height of the two contact strips ( 2 , 3 ) of the chip ( 1 ).
13. Method of making an electronic label according to claim 3 , wherein the single welding operation simultaneously welds the two segment portions to the two contact strips ( 2 , 3 ) of the chip ( 1 ).
14. Method of making an electronic label according to claim 3 , wherein after the step of welding the two segments of the conducting wire ( 4 ) between the contact strips ( 2 , 3 ) exhibit the configuration of a circular arc facing outward from the chip ( 1 ).
15. Method of making an electronic label comprising an electronic chip ( 1 ) provided with two contact strips ( 2 , 3 ) and an antenna formed from conducting wire ( 4 ), comprising:
placing the chip ( 1 ) on a support piece so that the contact strips ( 2 , 3 ) of said chip are situated on the side opposite to that in contact with the support piece;
taking conducting wire ( 4 ) from a reel and placing it on the support such that at least one portion is positioned facing the two contact strips of the chip ( 1 ); and
welding the conducting wire ( 4 ) in a single welding operation onto the two contact strips ( 2 , 3 ) to form the antenna of the electronic label,
wherein the welding of the conducting wire or wires ( 4 ) onto the contact strips ( 2 , 3 ) is done with a welding electrode ( 5 ) having an active portion with an end, and at the end of its active portion a recess ( 6 ), such that the recess ( 6 ) has dimensions that essentially correspond to the spaced between the two contact strips ( 2 , 3 ) enabling electrode to weld the antenna to the contact strip but not welding the wire between the contact strips disposed in the recess ( 6 ).
16. Method of making an electronic label according to claim 15 , wherein the single welding operation simultaneously welds the conducting wire ( 4 ) to the two contact strips ( 2 , 3 ) of the chip ( 1 ).
17. Method of making an electronic label according to claim 15 , wherein the recess ( 6 ) of the welding electrode ( 5 ) has a depth essentially corresponding to a height of the two contact strips ( 2 , 3 ) of the chip ( 1 ).
18. Method of making an electronic label according to claim 15 , further comprising cutting a portion of the conducting wire ( 4 ) forming the antenna situated between the two contact strips ( 2 , 3 ) into two segments before the step of welding.
19. Method of making an electronic label according to claim 18 , wherein after the step of welding the two segments of the conducting wire ( 4 ) between the contact strips ( 2 , 3 ) exhibit the configuration of a circular arc facing outward from the chip ( 1 ).