Integrated line driver for digital pulse-width modulation driven AMOLED displays on flex

J. Genoe, K. Obata, M. Ameys, K. Myny, T.H. Ke, M. Nag, S. Steudel, S. Schols, J. Maas, A. Tripathi, J.L. van der Steen, T.H. Ellis, G.H. Gelinck, P. Heremans

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Abstract

An integrated scan-line driver, driving half a QQVGA flexible AMOLED display using amorphous-IGZO backplane technology on foil, has been designed and measured. A pulse-width modulation technique has been implemented, enabling to drive the OLEDs with a duty cycle up to almost 100%. The digital driving method also results in a 40% static power reduction of the display. Dynamic logic and bootstrapping techniques enabled the use of clock frequencies up to 300kHz in unipolar amorphous-IGZO technologies on foil.

Original languageEnglish
Article number6951490
Pages (from-to)282-290
Number of pages9
JournalIEEE Journal of Solid-State Circuits
Volume50
Issue number1
DOIs
Publication statusPublished - 10 Nov 2014
Externally publishedYes

Keywords

  • Amorphous-IGZO
  • flexible displays
  • integrated line driver
  • low-power AMOLED displays
  • pulse-width modulation

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    Genoe, J., Obata, K., Ameys, M., Myny, K., Ke, T. H., Nag, M., Steudel, S., Schols, S., Maas, J., Tripathi, A., van der Steen, J. L., Ellis, T. H., Gelinck, G. H., & Heremans, P. (2014). Integrated line driver for digital pulse-width modulation driven AMOLED displays on flex. IEEE Journal of Solid-State Circuits, 50(1), 282-290. [6951490]. https://doi.org/10.1109/JSSC.2014.2364268