Journal of Information Display

The Korean Infomation Display Society (한국정보디스플레이학회)
권호 표지

A New AMOLED Pixel Circuit Employing a-Si:H TFTs for High Aperture Ratio

  • Shin, Hee-Sun (School of Electrical Engineering & Computer Science #50, Seoul National University) ;
  • Lee, Jae-Hoon (School of Electrical Engineering & Computer Science #50, Seoul National University) ;
  • Jung, Sang-Hoon (School of Electrical Engineering & Computer Science #50, Seoul National University) ;
  • Kim, Chang-Yeon (School of Electrical Engineering & Computer Science #50, Seoul National University) ;
  • Han, Min-Koo (School of Electrical Engineering & Computer Science #50, Seoul National University)
  • Published : 2005.06.24
Download PDF
⟨ Previous Next ⟩

Abstract

We propose a new pixel design for active matrix organic light emitting diode (AM-OLED) displays using hydrogenated amorphous silicon thin-film transistors (a-Si:H TFTs). The pixel circuit is composed of five TFTs and one capacitor, and employs only one additional control signal line. It is verified by SPICE simulation results that the proposed pixel compensates the threshold voltage shift of the a-Si:H TFTs and OLED.

Keywords

References

  1. J. A. Nichols, T. N. Jackson, M. H. Lu, and M. Hack, in SID '02 Digest (2002), p1368
  2. M. J. Powell, C. van Berkel, I. D. French, and D. H. Nicholls, Applied Physics Letters, 41, 1242 (1987)
  3. Y. He, R. Hattori, and J. Kanicki, IEEE Trans. Electron Devices, 48, 1322 (2001)
  4. A. Nathan and K. S. Karim, IEEE Journal of Selected Topics in Quantum Electronics, 10, 58 (2004) https://doi.org/10.1109/JSTQE.2004.841113
  5. J. C. Goh, C. K. Kim, and J. Jang, in SID '04 Digest (2004), p276
  6. J. L. Sanford and F. R. Libsch, in SID '03 Digest (2003), p10
  7. J. C. Goh, J. Jang, K. S. Cho, and C. -K. Kim, IEEE Electron device letter, 24, 583, (2003)