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P‐180: Active Compensation for OLED Aging
Author(s) -
Cok Ronald S.,
Leon Felipe
Publication year - 2006
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2433667
Subject(s) - oled , signal (programming language) , compensation (psychology) , materials science , reduction (mathematics) , current (fluid) , optoelectronics , computer science , electrical engineering , engineering , nanotechnology , mathematics , psychology , geometry , layer (electronics) , psychoanalysis , programming language
OLED devices age and become less efficient as they are used. The loss of light output comes from a decrease in current‐to‐photon conversion efficiency and from an increase in OLED resistance that results in a reduction of current through the OLED for a given drive signal. By measuring the changes in current at a given drive signal, the loss in efficiency can be inferred, and a correction can be applied to the driving signal to compensate for OLED aging. This correction is largely consistent with respect to variation in use and manufacture.