Fast current programming method for OLEDs using negative capacitor circuit

C. H. Shim, R. Hattori

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    To accelerate the settling speed of current programming for AMOLEDs or PMOLEDs, the concept of a "negative capacitor," which consists of a differentiation circuit, an inverting voltage amplifier, and a voltage-to-current converter, was introduced. Circuit simulation showed that this circuit could shorten the settling time to a range of microseconds even for 10 nA of programming current in AMOLEDs. This new driving circuit enabled accurate gray-scale images by using both PWM and PAM methods in PMOLED panels.

    Original languageEnglish
    Pages (from-to)573-579
    Number of pages7
    JournalJournal of the Society for Information Display
    Volume17
    Issue number7
    DOIs
    Publication statusPublished - Jul 1 2009

    Fingerprint

    Organic light emitting diodes (OLED)
    programming
    capacitors
    Capacitors
    Networks (circuits)
    settling
    Pulse amplitude modulation
    Circuit simulation
    Electric potential
    voltage amplifiers
    pulse amplitude modulation
    Pulse width modulation
    pulse duration modulation
    gray scale
    electric potential
    simulation

    All Science Journal Classification (ASJC) codes

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

    Cite this

    Fast current programming method for OLEDs using negative capacitor circuit. / Shim, C. H.; Hattori, R.

    In: Journal of the Society for Information Display, Vol. 17, No. 7, 01.07.2009, p. 573-579.

    Research output: Contribution to journalArticle

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