UHF RFID tag and method of manufacturing the same
First Claim
1. An ultra high frequency RFID tag comprising:
- a substrate;
a chip affixed to the substrate and having a plurality of contacts thereon; and
a plurality of UHF antennas extending away from the chip, wherein each UHF antenna of the plurality includes a first end that is electrically connected to one contact of the plurality of contacts and a second end that is distal from the first end and fixed to the substrate.
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Accused Products
Abstract
An ultra high frequency (UHF) radio frequency identification (RFID) tag and a method of manufacturing the tag are provided. The tag includes a substrate, a chip attached to the substrate and having a plurality of bumps for connecting a circuit formed therein with an external, and at least one UHF antenna extended in a longitudinal direction and responding to ultra high frequency transferred from the external, at least one end of the UHF antenna connected to the bump, and one portion of the antenna fixed to the substrate. Also, the method includes a) process of fixing a chip having a plurality of bumps to an upper surface of a substrate, b) process of installing a cutter between the bumps such that a blade portion of the cutter is placed at a certain height from the substrate, and c) process of installing a UHF antenna by lowering the UHF antenna having an extended portion to the cutter, with the antenna being positioned in a direction perpendicular to the blade portion, cutting the extended portion of the antenna by the cutter, and continuously lowering the antenna until a cut end of the antenna is connected to the bump. Since the UHF RFID tag employs a plurality of short UHF antennas instead of a loop-type antenna, the tag is integrated as much as it is required, due to a small volume, and a process of bonding the antenna to a chip is rapidly and easily performed.
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Citations
20 Claims
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1. An ultra high frequency RFID tag comprising:
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a substrate;
a chip affixed to the substrate and having a plurality of contacts thereon; and
a plurality of UHF antennas extending away from the chip, wherein each UHF antenna of the plurality includes a first end that is electrically connected to one contact of the plurality of contacts and a second end that is distal from the first end and fixed to the substrate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of manufacturing an ultra high frequency RFID tag, the method comprising:
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a) fixing a chip having plural contacts to an upper surface of a target object;
b) disposing a cutter above the chip to a blade portion is oriented upward;
c) lowering a UHF antenna member onto the blade portion;
d) cutting the UHF antenna member into two mirror-image UHF antennas; and
e) affixing a first end of each of the two mirror-image UHF antennas to each of the plural contacts. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An ultra high frequency RFID tag made by the process of:
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providing a nonconductive substrate;
affixing to the nonconductive substrate a microchip having first and second contacts thereon;
disposing a compressible tube on the microchip proximate each of the first and second contacts;
configuring each compressible tube so that a discharge hole is oriented toward a proximate contact;
filling the compressible tubes with a conductive material;
disposing a generally triangular prism-shaped cutter above the microchip so that a blade portion is oriented upward and a base of the cutter is oriented between the first and second contacts and above the compressible tubes;
providing an inverse, square U-shaped antenna member;
orienting the inverse, square U-shaped antenna member above the cutter for bisection by the cutter;
lowering the square U-shaped antenna member onto the blade portion;
cutting the UHF antenna member into two mirror-image UHF antennas; and
affixing a first end of each of the two mirror-image UHF antennas to one of the first and second contacts. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification