Title :
Design considerations for active matrix organic light emitting diode arrays
Author :
Kumar, A. ; Sakariya, K. ; Servati, P. ; Alexander, S. ; Striakhilev, D. ; Karim, K.S. ; Nathan, A. ; Hack, M. ; Williams, E. ; Jabbour, G.E.
Abstract :
Design considerations are presented for a-Si:H based AMOLED display backplanes, including 2-TFT voltage-programmed and 4-TFT threshold-voltage-shift-resistant current-programmed circuits. The RC equivalent models of voltage-programmed and current-programmed pixels are derived, based on which array simulations are performed. Array size scalability and optimal driving requirements for a-Si:H AMOLED pixels are also presented. The TFTs used were fabricated in-house and the array under consideration is a (320×240) QVGA operating at 60 frames/s
Keywords :
LED displays <act. matrix OLED arrays, design considerations>; driver circuits <act. matrix OLED arrays, design considerations>; organic light emitting diodes <act. matrix OLED arrays, design considerations>; thin film transistors <act. matrix OLED arrays, design considerations>; 2-TFT voltage-programmed circuits; 4-TFT threshold-voltage-shift-resistant current-programmed circuits; AMOLED display backplanes; RC equivalent models; Si:H; a-Si:H; active matrix organic light emitting diode arrays; array simulations; array size scalability; optimal driving requirements;
Journal_Title :
Circuits, Devices and Systems, IEE Proceedings -
DOI :
10.1049/ip-cds:20030730
