OSA's Digital Library

Journal of Display Technology

Journal of Display Technology


  • Vol. 9, Iss. 12 — Dec. 1, 2013
  • pp: 1001–1006

Transparent Current Mirrors With a-GIZO TFTs: Neural Modeling, Simulation and Fabrication

Pydi Ganga Bahubalindruni, Vítor Grade Tavares, Pedro Barquinha, Cândido Duarte, Pedro Guedes de Oliveira, Rodrigo Martins, and Elvira Fortunato

Journal of Display Technology, Vol. 9, Issue 12, pp. 1001-1006 (2013)

View Full Text Article

Acrobat PDF (1389 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

  • Export Citation/Save Click for help


This paper characterizes transparent current mirrors with n-type amorphous gallium–indium–zinc–oxide (a-GIZO) thin-film transistors (TFTs). Two-TFT current mirrors with different mirroring ratios and a cascode topology are considered. A neural model is developed based on the measured data of the TFTs and is implemented in Verilog-A; then it is used to simulate the circuits with Cadence Virtuoso Spectre simulator. The simulation outcomes are validated with the fabricated circuit response. These results show that the neural network can model TFT accurately, as well as the current mirroring ability of the TFTs.

© 2013 IEEE

Pydi Ganga Bahubalindruni, Vítor Grade Tavares, Pedro Barquinha, Cândido Duarte, Pedro Guedes de Oliveira, Rodrigo Martins, and Elvira Fortunato, "Transparent Current Mirrors With a-GIZO TFTs: Neural Modeling, Simulation and Fabrication," J. Display Technol. 9, 1001-1006 (2013)

Sort:  Year  |  Journal  |  Reset


  1. J. Y. Kwon, K. S. Son, J. S. Jung, T. S. Kim, M. K. Ryu, K. B. Park, B. W. Yoo, J. W. Kim, Y. G. Lee, K. C. Park, S. Y. Lee, J. M. Kim, "Bottom-gate gallium indium zinc oxide thin-film transistor array for high-resolution AMOLED display," IEEE Electron Device Lett. 29, 1309-1311 (2008).
  2. N. Gong, C. Park, J. Lee, I. Jeong, H. Han, J. Hwang, J. Park, K. Park, H. Jeong, Y. Ha, Y. Hwang, "58.2: Distinguished paper: Implementation of 240 hz 55-inch ultra definition LCD driven by a-IGZO semiconductor TFT with copper signal lines," SID Symp. Dig. Tech. Papers (2012) pp. 784-787.
  3. P. Barquinha, L. Pereira, G. Gonalves, R. Martins, D. Kuer, M. Kosec, E. Fortunato, "Performance and stability of low temperature transparent thin-film transistors using amorphous multicomponent dielectrics," J. Electrochem. Soc. 156, H824-H831 (2009).
  4. S. Sambandan, A. Kumar, K. Sakariya, A. Nathan, "Analogue circuit building blocks with amorphous silicon thin film transistors," Electron. Lett. 41, 314-315 (2005).
  5. H. Marien, M. Steyaert, E. van Veenendaal, P. Heremans, "A fully integrated ADC in organic thin-film transistor technology on flexible plastic foil," IEEE J. Solid-state Circuits 46, 276-284 (2011).
  6. E. Fortunato, P. Barquinha, R. Martins, "Oxide semiconductor thin-film transistors: A review of recent advances," Adv. Mater. 24, 2945-2986 (2012).
  7. B. Kim, S. C. Choi, J. S. Lee, S. J. Kim, Y. H. Jang, S. Y. Yoon, C. D. Kim, M. K. Han, "A depletion-mode In-Ga-Zn-O thin-film transistor shift register embedded with a full-swing level shifter," IEEE Electron Device Lett. 58, 3012-3017 (2011).
  8. D. Raiteri, "A 6 b 10 ms/s current-steering DAC manufactured with amorphous gallium-indium-zinc-oxide TFTs achieving ${\rm SFDR} > 30$ dB up to 300 kHz," IEEE Int. Solid-State Circuits Conf. Dig. Tech. Papers (ISSCC'2012) (2012) pp. 314-316.
  9. J. Zhang, X. Li, J. Lu, Z. Ye, L. Gong, P. Wu, J. Huang, Y. Zhang, L. Chen, B. Zhao, "Performance and stability of amorphous ingazno thin film transistors with a designed device structure," J. of Appl. Phys. 110, 084 509-084 509 (2011).
  10. P. Meijer, "Table models for device modelling," IEEE Int. Symp. Circuits Syst. (1988) pp. 2593-2596.
  11. V. B. Litovski, J. I. Radjenović, Ž. M. Mrčarica, S. L. Milenković, "MOS transistor modelling using neural network," Electron. Lett. 28, 1766-1768 (1992).
  12. A. Nathan, A. Kumar, K. Sakariya, P. Servati, K. Karim, D. Striakhilev, A. Sazonov, "Amorphous silicon back-plane electronics for OLED displays," IEEE J. Sel. Topics Quantum Electron. 10, 58-69 (2004).
  13. L. E. Feller, Zinc tin oxide thin-film transistor current mirror circuits Master's thesis Oregon State Univ.PortlandORUnited States (2011).
  14. K. Hornik, M. Stinchcombe, H. White, "Multilayer feedforward networks are universal approximators," Neural Netw. 2, 359-366 (1989).
  15. P. Barquinha, L. Pereira, G. Goncalves, R. Martins, E. Fortunato, "Toward high-performance amorphous GIZO TFTs," J. Electrochem. Soc. 156, H161-H168 (2009).
  16. G. Bernardo, G. Goncalves, P. Barquinha, Q. Ferreira, G. Brotas, L. Pereira, A. Charas, J. Morgado, R. Martins, E. Fortunato, "Polymer light-emitting diodes with amorphous indium-zinc oxide anodes deposited at room temperature," Synth. Metals 159, 1112-1115 (2009).
  17. P. Barquinha, L. Pereira, G. Goncalves, D. Kuscer, M. Kosec, A. Vila, A. Olziersky, J. R. Morante, R. Martins, E. Fortunato, "Low-temperature sputtered mixtures of high- $\kappa$ and high bandgap dielectrics for GIZO TFTs," J. Soc. Inf. Display 18, 762-772 (2010).
  18. A. Olziersky, P. Barquinha, A. Vila, L. Pereira, G. Goncalves, E. Fortunato, R. Martins, J. R. Morante, "Insight on the SU-8 resist as passivation layer for transparent Ga $_{2}$ O $_{3}$ -In $_{2}$ O $_{3}$ -ZnO thin-film transistors," J. Appl. Phys. 108, 064505-064505-7 (2010).

Cited By

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article

OSA is a member of CrossRef.

CrossCheck Deposited