Title
External compensation for high-resolution active matrix organic light-emitting diode displays
Author
Verschueren, L.
Ameys M.,
Velazquez Lopez M.,
Roose F. de,
Bonnifait M.,
Smout S.,
Ke T.H.,
Vandenplas E.,
Kronemeijer A.J.,
Steudel S.,
Genoe J.,
Dehaene W.,
Myny K.,
Publication year
2021
Abstract
Two different external compensation methods for high-resolution active matrix organic light-emitting diode (AMOLED) displays are presented and compared. Both compensation methods are implemented using a small pixel circuit, namely, a 3T2C and a 2T1C pixel circuit, allowing high-resolution displays. Due to the simple driving schemes, these methods allow fast driving, even for large displays. The characterization results show a significant improvement in current variation by implementing either of these methods. The VT compensation method using a 3T2C pixel circuit is able to reduce the current variation down to 0.56%, whereas the VT- and β-factor compensation method using a 2T1C pixel circuit demonstrates a further reduction in current variations down to 0.079%. This method also clearly shows significant improvement in optical variation between neighboring pixels.
Subject
AMOLED
External compensation
Flexible displays
Uniformity
VT shift
Variations
To reference this document use:
http://resolver.tudelft.nl/uuid:65e1c94b-a83a-4afc-996b-49ca1334d5c4
DOI
https://doi.org/10.1002/jsid.992
TNO identifier
957534
Publisher
Wiley
ISSN
1071-0922
Source
Journal of the Society for Information Display, 29 (29), 511-525
Document type
article