Radio frequency identification device implemented with a...

Details Radio frequency identification device implemented with a... Radio frequency identification device implemented with a...

2007-03-20

2007-03-20

Lee, Seung Ho (Department: 2876)

Registers

Records

Conductive

C235S451000, C235S476000, C340S870030

Reexamination Certificate

active

11140901

ABSTRACT:
The present invention discloses a radio frequency identification device implemented with a metal-gate semiconductor fabrication process, wherein the charge capacitor, which is formed by the special parasitic N-type and P-type guard rings in the chip fabricated with the metal-gate process, incorporated with the original P-type and N-type transistors of metal oxide semiconductor (PMOS/NMOS) not only can provide a horizontal surface current but also can provide a rectified current for the performance of the entire circuit, which can advance the metal gate process to RFID industry in cooperation with an identification code holder circuit and a non-synchronous local oscillation circuit so that the fabrication cost can be lowered and the fabrication time can be shortened.

REFERENCES:
patent: 6223990 (2001-05-01), Kamei
patent: 7014112 (2006-03-01), deVos et al.
patent: 2004/0256468 (2004-12-01), Akiho et al.
Usami (“An ultra small RFID chip: μ-chip”, Radio Frequency Integrated Circuits (RFIC) Symposium, 2004. Digest of Papers. 2004, Jun. 6-8, 2004 pp. 241-244).

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