Flexible QQVGA AMOLED display with organic TFTs

Soeren Steudel, Kris Myny, Sarah Schols, Peter Vicca, Steve Smout, Ashutosh Tripathi, Bas Van Der Putten, Jan Laurens Van Der Steen, Martin Van Neer, Falk Schütze, Olaf R. Hild, Erik Van Veenendaal, Marcel Van Mil, Jan Genoe, Gerwin Gelinck, Paul Heremans

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


We present a QQVGA top emitting monochrome AMOLED display with 85dpi resolution using an organic TFT backplane on low temperature PEN-foil. The back plane process flow is based on a 7 layer photolithography process that yields a final mobility of the OTFT of ∼0.4cm2/Vs. The aperture ratio of the top-emitting OLEDs is over 75%. For operation at 10 V supply voltage (VDD), the brightness of the display using red, green or blue OLEDs exceeds 200cd/m2. We will furthermore discuss the relevant parameters that determine the performance of our organic backplanes for OLED displays, in particular bias stress, output resistance, uniformity and current drive capability.

Original languageEnglish
Title of host publication18th International Display Workshops 2011, IDW'11
PublisherSociety for Information Display
Number of pages4
ISBN (Print)9781622761906
Publication statusPublished - 1 Dec 2011
Externally publishedYes
Event18th International Display Workshops (IDW 2011) - Nagoya, Japan
Duration: 7 Dec 20119 Dec 2011
Conference number: 18


Conference18th International Display Workshops (IDW 2011)
Abbreviated titleIDW 2011


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