Title :
A fast settling current driver based on the CCII for AMOLED displays
Author :
Chaji, G.Reza ; Nathan, Arokia
Author_Institution :
Univ. of Waterloo, Ont., Canada
Abstract :
Conventional current drivers are incapable of programming high-resolution hydrogenated amorphous silicon (a-Si:H) active matrix organic light-emitting diode (AMOLED) displays within the frame time requirement. This paper presents a new fast settling current driver. While the settling time of the conventional drivers is of the order of milliseconds (ms), the new current driver presented here can settle under 40 μs, thus providing for high-resolution current-programmed a-Si:H AMOLED displays such as QVGA (320×240), SVGA (800×600), and XGA (1024×768).
Keywords :
LED displays; amorphous semiconductors; current conveyors; driver circuits; organic light emitting diodes; silicon; AMOLED displays; CCII; QVGA; SVGA; Si:H; XGA; active matrix organic light-emitting diode; current-programmed pixel circuit; differentiator feedback; fast settling current driver; frame time requirement; hydrogenated amorphous silicon; second generation current conveyor; settling time; thin film transistor; Active matrix organic light emitting diodes; Amorphous silicon; Backplanes; Driver circuits; Feedback circuits; Flat panel displays; Organic light emitting diodes; Parasitic capacitance; Thin film transistors; Voltage; Active matrix organic light emitting diode (AMOLED); current-programmed pixel circuit; differentiator feedback; hydrogenated amorphous silicon (a-Si:H); second generation current conveyor; thin film transistor;
Journal_Title :
Display Technology, Journal of
DOI :
10.1109/JDT.2005.858934
