Title :
Feedback architecture for uniform brightness in TFT AMOLED displays
Author :
Charisoulis, Thomas ; Frey, D. ; Hatalis, Miltos
Author_Institution :
Lehigh Univ., Bethlehem, PA, USA
Abstract :
A novel feedback current programming principle, compatible with 2T1C pixel structure AMOLED displays is described and a new driver circuit is proposed which can compensate for both the threshold voltage and mobility non- uniformities of the pixel drive TFT. Circuit simulations demonstrated that a pixel drive current of less than 100nA can be programmed with less than 10% of error even if the mobility varies by an order of magnitude.
Keywords :
LED displays; driver circuits; thin film transistors; AMOLED displays; TFT; driver circuit; feedback architecture; feedback current programming principle; mobility nonuniformities; threshold voltage; uniform brightness; Active matrix organic light emitting diodes; Brightness; Electric potential; Impedance; Programming; Thin film transistors;
Conference_Titel :
Photonics Conference (IPC), 2013 IEEE
Conference_Location :
Bellevue, WA
Print_ISBN :
978-1-4577-1506-8
DOI :
10.1109/IPCon.2013.6656495
