Static active-matrix OLED display without pixel refresh enabled by amorphous-silicon non-volatile memory

Yifei Huang, Bahman Hekmatshoar, Sigurd Wagner, James C. Sturm

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

An active-matrix organic light-emitting-diode (AMOLED) display which does not require pixel refresh is demonstrated. This was achieved by replacing the thin-film transistor (TFT) that drives the OLED with a non-volatile memory TFT, in a 2-transistor pixel circuit. The threshold voltage of the non-volatile-memory TFT can be changed by applying programming voltage pulses to the gate electrode. This approach eliminates the need for storage capacitors, increases the pixel fill factor, and potentially reduces power consumption. Each pixel can be individually programmed or erased using a standard active-matrix addressing scheme. The programmed image is stored in the display even if power is turned off.

Original languageEnglish (US)
Pages (from-to)879-883
Number of pages5
JournalJournal of the Society for Information Display
Volume18
Issue number11
DOIs
StatePublished - Nov 2010

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Keywords

  • AMOLED display
  • Amorphous silicon
  • Non-volatile memory
  • Thin-film transistor

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