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Proceedings Paper

Driving platform for OLED lighting investigations
Author(s): Uwe Vogel; Andreas Elgner; Daniel Kreye; Jörg Amelung; Michael Scholles
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Paper Abstract

OLED technology may be excellently suitable for lighting applications by combining high efficiency, cost effective manufacturing and the use of low cost materials. Certain issues remain to be solved so far, including OLED brightness, color, lifetime, large area uniformity and encapsulation. Another aspect, that might be capable in addressing some of the mentioned issues, is OLED lighting electrical driving. We report on the design of a driving platform for OLED lighting test panels or substrates. It is intended for being a test environment for lighting substrates as well as demonstration/presentation environment. It is based on a 128-channel passive-matrix driver/controller ASIC OC2. Its key component is an MSP430-compatible 16-bit micro-controller core including embedded Flash memory (program), EEPROM (parameter), and RAM (data memory). A significant feature of the device is an electronic approach for improving the lifetime/uniformity behavior of connected OLED. The embedded micro-controller is the key to the high versatility of OC2, since by firmware modification it can be adapted to various applications and conditions. Here its application for an OLED lighting driving platform is presented. Major features of this platform are PC-control mode (via USB interface), stand-alone mode (no external control necessary, just power supply), on-board OLED panel parameter storage, flat geometry of OLED lighting panel carrier (board), AC and DC driving regimes, adjustable reverse voltage, dedicated user SW (PC/Windows-based), sub-tile patterning and single sub-tile control, combination of multiple channels for increasing driving current. This publication contains results of the project "High Brightness OLEDs for ICT & Next Generation Lighting Applications" (OLLA), funded by the European Commission.

Paper Details

Date Published: 12 September 2006
PDF: 8 pages
Proc. SPIE 6337, Sixth International Conference on Solid State Lighting, 633715 (12 September 2006); doi: 10.1117/12.680641
Show Author Affiliations
Uwe Vogel, Fraunhofer Institute for Photonic Microsystems (Germany)
Andreas Elgner, Fraunhofer Institute for Photonic Microsystems (Germany)
Daniel Kreye, Fraunhofer Institute for Photonic Microsystems (Germany)
Jörg Amelung, Fraunhofer Institute for Photonic Microsystems (Germany)
Michael Scholles, Fraunhofer Institute for Photonic Microsystems (Germany)

Published in SPIE Proceedings Vol. 6337:
Sixth International Conference on Solid State Lighting
Ian T. Ferguson; Nadarajah Narendran; Tsunemasa Taguchi; Ian E. Ashdown, Editor(s)

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