RF and/or RF identification tag/device having an integrated interposer, and methods for making and using the same
First Claim
1. An identification device, comprising:
- a) a recess-free interposer;
b) a concentric and/or spiral antenna and/or inductor consisting of a single layer of conductive material attached or affixed to said interposer, said antenna and/or inductor having first and second opposed terminals; and
c) integrated circuitry on a major surface of said interposer, said integrated circuitry being positioned over rings or loops of said antenna and/or inductor and electrically connected at a first location to said first terminal of said antenna and/or inductor and at a second location to said second terminal of said antenna and/or inductor, and said integrated circuitry comprising (i) a plurality of thin film transistors and (ii) conductive structures interconnecting the thin film transistors, the integrated circuitry comprising at least one printed thin film and having a lowest layer in physical contact with said major surface of said interposer, a first successive layer on said lowest layer, and a second successive layer on said first successive layer, wherein said lowest layer and said first and second successive layers taken together comprise an insulating thin film, a metal thin film, and a semiconductor thin film.
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Accused Products
Abstract
A MOS RF surveillance and/or identification tag, and methods for its manufacture and use. The tag generally includes an interposer, an antenna and/or inductor on the interposer, and integrated circuitry on the interposer in a location other than the antenna and/or inductor. The integrated circuitry generally has a lowest layer in physical contact with the interposer surface. The method of manufacture generally includes forming a lowest layer of integrated circuitry on an interposer, forming successive layers of the integrated circuitry on the lowest layer of integrated circuitry, and attaching an electrically conductive functional layer to the interposer. Alternatively, an electrically conductive structure may be formed from a functional layer attached to the interposer. The method of use generally includes causing and/or inducing a current in the present tag sufficient for it to generate, reflect or modulate a detectable electromagnetic signal, detecting the signal, and optionally, processing information conveyed by the detectable electromagnetic signal. The present invention advantageously provides a low cost RFID tag capable of operating at MHz frequencies that can be manufactured in a shorter time period than conventional RFID tags that manufacture all active electrical devices on a conventional wafer.
78 Citations
38 Claims
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1. An identification device, comprising:
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a) a recess-free interposer; b) a concentric and/or spiral antenna and/or inductor consisting of a single layer of conductive material attached or affixed to said interposer, said antenna and/or inductor having first and second opposed terminals; and c) integrated circuitry on a major surface of said interposer, said integrated circuitry being positioned over rings or loops of said antenna and/or inductor and electrically connected at a first location to said first terminal of said antenna and/or inductor and at a second location to said second terminal of said antenna and/or inductor, and said integrated circuitry comprising (i) a plurality of thin film transistors and (ii) conductive structures interconnecting the thin film transistors, the integrated circuitry comprising at least one printed thin film and having a lowest layer in physical contact with said major surface of said interposer, a first successive layer on said lowest layer, and a second successive layer on said first successive layer, wherein said lowest layer and said first and second successive layers taken together comprise an insulating thin film, a metal thin film, and a semiconductor thin film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification