Journal article
An 8 x 8 pixel array pen-input OLED screen based on organic magnetoresistance
IEEE transactions on electron devices, Vol.54(6), pp.1571-1577
06/01/2007
DOI: 10.1109/TED.2007.895240
Abstract
We present the design principles for a pen-input organic light-emitting diode (OLED) display based on the recently discovered organic magnetoresistance effect (OMAR). In the prototypical OLED material Alq3, OMAR is as large as 10% for small magnetic fields, B = 10 mT at room temperature. We construct a pen-input screen consisting of an 8 × 8 pixel OMAR array made from Alq3, together with a magnetic pen that emits an ac magnetic field. We describe a multiplexed detection scheme that uses a single filter/amplifier circuit to sequentially scan the individual pixels for the presence of the magnetic pen. For this scheme to work efficiently, it requires using frequencies on the order of 100 kHz. We demonstrate that our OMAR devices can indeed follow such high frequencies under certain operating conditions. © 2007 IEEE.
Details
- Title: Subtitle
- An 8 x 8 pixel array pen-input OLED screen based on organic magnetoresistance
- Creators
- Govindarajan Veeraraghavan - University of IowaTho D Nguyen - University of IowaYUGANG Sheng - University of IowaÖmer Mermer - Ege UniversityMarkus Wohlgenannt - University of Iowa
- Resource Type
- Journal article
- Publication Details
- IEEE transactions on electron devices, Vol.54(6), pp.1571-1577
- Publisher
- Institute of Electrical and Electronics Engineers
- DOI
- 10.1109/TED.2007.895240
- ISSN
- 0018-9383
- eISSN
- 1557-9646
- Language
- English
- Date published
- 06/01/2007
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428682702771
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