Abstract

A new voltage-programmed pixel circuit using hydrogenated amorphous silicon (a-Si:H) thin-film transistors (TFTs) for active-matrix organic light-emitting diodes (AMOLEDs) is presented. In addition to compensating for the shift in threshold voltage of TFTs, the circuit is capable of compensating for OLED luminance degradation by employing the shift in OLED voltage as a feedback of OLED degradation.

© 2007 IEEE

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  1. A. Nathan, A. Kumar, K. Sakariya, P. Servati, S. Sambandan, D. Striakhilev, "Amorphous silicon thin film transistor circuit integration for organic LED displays on glass and plastic," IEEE J. Solid-State Circuits 39, 215-222 (2003).
  2. 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 Lett. 21, 590-592 (2000).
  3. J. Goh, J. Jang, K. Cho, C. Kim, "A new a-Si:H thin-film transistor pixel circuits for active matrix organic light-emitting diodes," IEEE Electron Device. Lett. 24, 583-585 (2003).
  4. S. H. Jung, W. J. Nam, M. K. Han, "A new voltage-modulated AMOLED pixel design compensating for threshold voltage variation in poly-Si TFTs," IEEE Electron Device Lett. 25, 690-692 (2004).
  5. A. Giraldo, "Optical feedback in active matrix polymer OLED displays," Proc. IEEE LEOS 2003 (2003) pp. 529-530.
  6. R. C. Kwong, "High operational stability of electrophosphorescent devices," App. Phys. Lett. 81, 162-164 (2002).
  7. H. Aziz, Z. D. Popovic, N. X. Hu, A. M. Hor, G. Xu, "Degradation mechanism of small molecule-based organic light-emitting devices," Science 283, 1900-1902 (1999).
  8. P. Servati, A. Nathan, "Modeling of the static and dynamic behaviour of hydrogenated amorphous silicon thin-film transistors," J. Vac. Sci. Technol. 20, 1038-1042 (2002).

App. Phys. Lett. (1)

R. C. Kwong, "High operational stability of electrophosphorescent devices," App. Phys. Lett. 81, 162-164 (2002).

IEEE J. Solid-State Circuits (1)

A. Nathan, A. Kumar, K. Sakariya, P. Servati, S. Sambandan, D. Striakhilev, "Amorphous silicon thin film transistor circuit integration for organic LED displays on glass and plastic," IEEE J. Solid-State Circuits 39, 215-222 (2003).

IEEE Electron Device Lett. (1)

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 Lett. 21, 590-592 (2000).

IEEE Electron Device Lett. (1)

S. H. Jung, W. J. Nam, M. K. Han, "A new voltage-modulated AMOLED pixel design compensating for threshold voltage variation in poly-Si TFTs," IEEE Electron Device Lett. 25, 690-692 (2004).

IEEE Electron Device. Lett. (1)

J. Goh, J. Jang, K. Cho, C. Kim, "A new a-Si:H thin-film transistor pixel circuits for active matrix organic light-emitting diodes," IEEE Electron Device. Lett. 24, 583-585 (2003).

J. Vac. Sci. Technol. (1)

P. Servati, A. Nathan, "Modeling of the static and dynamic behaviour of hydrogenated amorphous silicon thin-film transistors," J. Vac. Sci. Technol. 20, 1038-1042 (2002).

Science (1)

H. Aziz, Z. D. Popovic, N. X. Hu, A. M. Hor, G. Xu, "Degradation mechanism of small molecule-based organic light-emitting devices," Science 283, 1900-1902 (1999).

Other (1)

A. Giraldo, "Optical feedback in active matrix polymer OLED displays," Proc. IEEE LEOS 2003 (2003) pp. 529-530.

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