AMOLED panel driven by time-multiplexed clamped inverter circuit to reduce complex control signals

Chun Ho Chen*, Ke-Horng Chen, Che Chin Chen, Yi Fu Chen, Han-Ping Shieh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A time-multiplexing technique employing a pulse-width-modulation (PWM) charge-pump scheme for driving active-matrix organic light-emitting-diodes (AMOLEDs) is described. This scheme greatly reduces the number of control lines. The two- or four-phase PWM driving technique not only reduces costs through the simplification of manufacture but also improves the uniformity and lifetime of OLED panels. Experimental results show that the proposed circuit effectively and precisely controls the timing of OLED data-writing and light emission.

Original languageAmerican English
Pages (from-to)787-791
Number of pages5
JournalJournal of the Society for Information Display
Volume16
Issue number7
DOIs
StatePublished - 1 Jul 2008

Keywords

  • Active-matrix organic light-emitting diode (AMOLED)
  • Clamped inverter
  • Driving
  • Pulse-width modulation (PWM)

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