Electronic device with unique encoding

Details Electronic device with unique encoding Electronic device with unique encoding

2011-03-01

2011-03-01

Chaudhari, Chandra (Department: 2891)

Semiconductor device manufacturing: process

Making device array and selectively interconnecting

Rendering selected devices operable or inoperable

C438S158000, C257SE21414

Reexamination Certificate

active

07897439

ABSTRACT:
An electronic device comprising a thin film transistor (TFT) array and manufacturing methods thereof according to various embodiments. Jet-printed material is deposited on selected partially formed transistors to form completed transistors. Thus, a selected number of the TFTs are connected into the circuit while the remainder of the TFTs are not connected. An electronic read-out of the array identifies the specific array by distinguishing the connected TFTs from the unconnected ones. For a TFT array with n elements there are 2nalternative configurations; therefore, a relatively small number of TFTs can uniquely identify a huge number of devices. Such uniquely encoded devices have applications for encryption, identification and personalization of electronic systems.

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patent: 2005/0146006 (2005-07-01), Yamazaki et al.
Arias, “All jet-printed polymer thin-film transitor active-matrix backplanes”, Oct. 2004, Applied Physics Letters, pp. 3304-3306.
European Search Report, Feb. 25, 2010.
Wong, W. S., et al., “Jet-printed fabrication of a -s1:h thin-film transistors and arrays”, Journal of Non-Crystalline Solids, North-Holland Physics Publishing, Amsterdam, NL, vol. 299-302, Apr. 1, 2002, pp. 1335-1339.
Paul, Kateri E., et al. “Additive jet printing of polymer thin-film transistors”, Applied Physics Letters, AIP, American Institute of Physics, Melville, NY, U.S. vol. 83, n. 10, Sep. 8, 2003, pp. 2070-2072.

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