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Low Temperature a-Si:H Pixel Circuits for Mechanically Flexible AMOLED Displays

  • Arokia Nathan (a1), Denis Striakhilev (a1), Peyman Servati (a1), Kapil Sakariya (a1), Anil Kumar (a1), Karim S. Karim (a1) and Andrei Sazonov (a1)...
Abstract
Abstract

This paper presents the first demonstration of amorphous silicon (a-Si:H) thin film transistor (TFT) circuit integration on plastic substrates. The circuits compensate for material shortcomings such as metastable threshold voltage (VT) shift and high contact resistance, to supply stable and predictable currents to drive organic light emitting diode (OLED) displays on plastic. Various drive circuits were fabricated and tested. The simplest pixel driver circuit possible is the two TFT voltage-programmed circuit, which is very susceptible to any shift in VT of the drive TFT. To overcome this problem, we have developed current-programmed pixel circuits based on the current mirror circuit family, which include the simple and cascode current mirrors. The OLED current in these circuits is virtually independent of any VT shift or mobility variation in the drive TFT. Results show that the circuits provide higher linearity and dynamic range than currently available pixel circuits while minimizing the pixel area.

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4. A. M. Miri and S. G. Chamberlain , “A totally wet etch fabrication technology for amorphous silicon thin film transistors,” Mat. Res. Soc. Symp. Proc., vol. 377, pp. 737742, 1995.

5. P. Servati and A. Nathan , J. Vac. Sci. Tech. A, 20, 1038 (2002).

6. M. S. Shur , H. C. Slade , M. D. Jacunski , A. A. Owusu , and T. Ytterdal , J. Electrochem. Soc. 144, 2833 (1997).

7. T. Leroux , Solid-State Elec. 29, 47 (1986).

9. C. van Berkel and M. J. Powell , “Resolution of amorphous silicon thin-film transistor instability mechanisms using ambipolar transistors,” App. Phys. Lett., vol. 51, no. 14, pp. 10941096, Oct. 1987.

11. G. Gu and S. R. Forrest , “Design of Flat-Panel Displays Based on Organic Light- Emitting Devices,” IEEE Journal of Selected Topics in Quantum Electronics, vol. 4, no. 1, pp. 8399, Jan./Feb. 1998.

12. Y. He , R. Hattori , J. Kanicki , ‘Current-source a-Si:H thin film transistor circuit for active matrix organic light emitting displays’, IEEE Electron Device Letts., vol. 21, p. 590, 2000.

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MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
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