Abstract

A new pixel circuit design for active matrix organic light-emitting diode (AMOLED), based on the low-temperature polycrystalline silicon thin-film transistors (LTPS-TFTs) is proposed and verified by SPICE simulation. Threshold voltage compensation pixel circuit consisting of four n-type TFTs, one p-type TFT, one additional control signal, and one storage capacitor is used to enhance display image quality. The simulation results show that this pixel circuit has high immunity to the variation of poly-Si TFT characteristics.

© 2005 IEEE

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  1. M. Kimura, I. Yudasaka, S. Kanbe, H. Kobayashi, H. Kiguchi, S. I. Seki, S. Miyashita, T. Shimoda, T. Ozawa, K. Kitawada, T. Nakazawa, W. Miyazawa and H. Ohshima, "Low-temperature polysilicon thin-film transistor driving with integrated driver for high-resolution light emitting polymer display", IEEE Trans. Electron Devices, vol. 46, no. 12, pp. 2282-2288, Dec. 1999.
  2. C. W. Lin, D. Z. Peng, R. Lee, Y. F. Shih, C. K. Jan, M. H. Hsieh, S. C. Chang and Y. M. Tsai, "Advanced poly-Si device and circuitry for AMOLED and high-integration AMLCD", in Int. Display Manufacturing Conf., 2005, pp. 315-318.
  3. B. T. Chen, Y. J. Kuo, C. C. Pai, C. C. Tsai, H. C. Cheng and Y. H. Tai, "A new pixel circuit for driving organic light emitting diodes with low temperature polycrystalline thin film transistors", in Int. Display Manufacturing Conf.erence, 2005, pp. 378-381.
  4. J. H. Kim and J. Kanicki, "200 dpi 3-a-Si:H TFT's voltage-driven AM-PLED's", in SID Tech. Dig., 2003, pp. 18-21.
  5. J. H. Lee, B. H. You, W. J. Nam, H. J. Lee and M. K. Han, "A new a-Si:H TFT pixel design compensating threshold voltage degradation of TFT and OLED", in SID Tech. Dig., 2004, pp. 264-267.
  6. R. M. A. Dawson, Z. Shen, D. A. Furst, S. Connor, J. Hsu, M. G. Kane, R. G. Stewart, A. Ipri, C. N. King, P. J. Green, R. T. Flegal, S. Pearson, W. A. Barrow, E. Dickey, K. Ping, S. Robinson, C. W. Tang, S. Van Slyke, F. Chen, J. Shi, M. H. Lu and J. C. Sturm, "The impact of the transient response of organic light emitting diodes on the design of active matrix OLED displays", in IEDM Tech. Dig., 1998, pp. 875-878.
  7. S. M. Choi, O. K. Kwon and H. K. Chung, "An improved voltage programmed pixel structure for large size and high resolution AM-OLED displays", in SID Tech. Dig., 2004, pp. 260- 263.
  8. J. C. Goh, H. J. Chung and J. Jang, "A new pixel circuit for active matrix organic light emitting diodes", IEEE Electron Device Lett., vol. 23, no. 9, pp. 544-546, Sep. 2002.
  9. Y. He, R. Hattori and J. Kanicki, "Four-thin film transistor pixel electrode circuits for active-matrix organic light-emitting displays", Jpn. J. Appl. Phys., vol. 40, pp. 1199-1208, 2001.
  10. Y. C. Lin and H. P. D. Shsieh, "Improvement of brightness uniformity by AC driving scheme for AMOLED display", IEEE Electron Device Lett., vol. 25, no. 11, pp. 728-730, Nov. 2004.
  11. J. J. Lih, C. F. Sung, C. H. Li, T. H. Hsiao and H. H. Lee, "Comparison of a-Si and poly-Si for AMOLEDs", in SID Tech. Dig., 2004, pp. 1504 -1507.
  12. S. W. B. Tam and T. Shimoda, "Modeling and design of polysilicon drive circuits for OLED displays", in SID Tech. Dig., 2004, pp. 1406-1409.
  13. M. Mizukami, K. Inukai, H. Yamagata, T. Konuma, T. Nishi, J. Koyama, S. Yamazaki and T. Tsutsui, "6-bit digital VGA OLED", in SID Tech. Dig., 2000, pp. 912- 915.
  14. H. Akimoto, H. Kageyama, Y. Shimizu, H. Awakura, S. Nishitani and T. Sato, "An innovative pixel-driving scheme for 64-level gray-scale full-color active matrix OLED displays", in SID Tech. Dig., 2002, pp. 972- 975.

Other (14)

M. Kimura, I. Yudasaka, S. Kanbe, H. Kobayashi, H. Kiguchi, S. I. Seki, S. Miyashita, T. Shimoda, T. Ozawa, K. Kitawada, T. Nakazawa, W. Miyazawa and H. Ohshima, "Low-temperature polysilicon thin-film transistor driving with integrated driver for high-resolution light emitting polymer display", IEEE Trans. Electron Devices, vol. 46, no. 12, pp. 2282-2288, Dec. 1999.

C. W. Lin, D. Z. Peng, R. Lee, Y. F. Shih, C. K. Jan, M. H. Hsieh, S. C. Chang and Y. M. Tsai, "Advanced poly-Si device and circuitry for AMOLED and high-integration AMLCD", in Int. Display Manufacturing Conf., 2005, pp. 315-318.

B. T. Chen, Y. J. Kuo, C. C. Pai, C. C. Tsai, H. C. Cheng and Y. H. Tai, "A new pixel circuit for driving organic light emitting diodes with low temperature polycrystalline thin film transistors", in Int. Display Manufacturing Conf.erence, 2005, pp. 378-381.

J. H. Kim and J. Kanicki, "200 dpi 3-a-Si:H TFT's voltage-driven AM-PLED's", in SID Tech. Dig., 2003, pp. 18-21.

J. H. Lee, B. H. You, W. J. Nam, H. J. Lee and M. K. Han, "A new a-Si:H TFT pixel design compensating threshold voltage degradation of TFT and OLED", in SID Tech. Dig., 2004, pp. 264-267.

R. M. A. Dawson, Z. Shen, D. A. Furst, S. Connor, J. Hsu, M. G. Kane, R. G. Stewart, A. Ipri, C. N. King, P. J. Green, R. T. Flegal, S. Pearson, W. A. Barrow, E. Dickey, K. Ping, S. Robinson, C. W. Tang, S. Van Slyke, F. Chen, J. Shi, M. H. Lu and J. C. Sturm, "The impact of the transient response of organic light emitting diodes on the design of active matrix OLED displays", in IEDM Tech. Dig., 1998, pp. 875-878.

S. M. Choi, O. K. Kwon and H. K. Chung, "An improved voltage programmed pixel structure for large size and high resolution AM-OLED displays", in SID Tech. Dig., 2004, pp. 260- 263.

J. C. Goh, H. J. Chung and J. Jang, "A new pixel circuit for active matrix organic light emitting diodes", IEEE Electron Device Lett., vol. 23, no. 9, pp. 544-546, Sep. 2002.

Y. He, R. Hattori and J. Kanicki, "Four-thin film transistor pixel electrode circuits for active-matrix organic light-emitting displays", Jpn. J. Appl. Phys., vol. 40, pp. 1199-1208, 2001.

Y. C. Lin and H. P. D. Shsieh, "Improvement of brightness uniformity by AC driving scheme for AMOLED display", IEEE Electron Device Lett., vol. 25, no. 11, pp. 728-730, Nov. 2004.

J. J. Lih, C. F. Sung, C. H. Li, T. H. Hsiao and H. H. Lee, "Comparison of a-Si and poly-Si for AMOLEDs", in SID Tech. Dig., 2004, pp. 1504 -1507.

S. W. B. Tam and T. Shimoda, "Modeling and design of polysilicon drive circuits for OLED displays", in SID Tech. Dig., 2004, pp. 1406-1409.

M. Mizukami, K. Inukai, H. Yamagata, T. Konuma, T. Nishi, J. Koyama, S. Yamazaki and T. Tsutsui, "6-bit digital VGA OLED", in SID Tech. Dig., 2000, pp. 912- 915.

H. Akimoto, H. Kageyama, Y. Shimizu, H. Awakura, S. Nishitani and T. Sato, "An innovative pixel-driving scheme for 64-level gray-scale full-color active matrix OLED displays", in SID Tech. Dig., 2002, pp. 972- 975.

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