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A Transparent Logic Circuit for RFID Tag in a-IGZO TFT Technology

  • Yang, Byung-Do (Department of Electronics Engineering, Chungbuk National University) ;
  • Oh, Jae-Mun (Department of Electronics Engineering, Chungbuk National University) ;
  • Kang, Hyeong-Ju (School of Computer Science & Engineering, Korea University of Technology and Education) ;
  • Park, Sang-Hee (Components & Materials Research Laboratory, ETRI) ;
  • Hwang, Chi-Sun (Components & Materials Research Laboratory, ETRI) ;
  • Ryu, Min Ki (Components & Materials Research Laboratory, ETRI) ;
  • Pi, Jae-Eun (Components & Materials Research Laboratory, ETRI)
  • Received : 2012.11.28
  • Accepted : 2013.03.05
  • Published : 2013.08.01
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Abstract

This paper proposes a transparent logic circuit for radio frequency identification (RFID) tags in amorphous indium-gallium-zinc-oxide (a-IGZO) thin-film transistor (TFT) technology. The RFID logic circuit generates 16-bit code programmed in read-only memory. All circuits are implemented in a pseudo-CMOS logic style using transparent a-IGZO TFTs. The transmittance degradation due to the transparent RFID logic chip is 2.5% to 8% in a 300-nm to 800-nm wavelength. The RFID logic chip generates Manchester-encoded 16-bit data with a 3.2-kHz clock frequency and consumes 170 ${\mu}W$ at $V_{DD}=6$ V. It employs 222 transistors and occupies a chip area of 5.85 $mm^2$.

Keywords

References

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