Title :
VT Compensation Circuit for AM OLED Displays Composed of Two TFTs and One Capacitor
Author :
Ono, Shinya ; Miwa, Koichi ; Maekawa, Yuichi ; Tsujimura, Takatoshi
Author_Institution :
OLED Products, Kodak Japan Ltd, Kanagawa
fDate :
3/1/2007 12:00:00 AM
Abstract :
In this paper, we propose the threshold-voltage compensation pixel circuit that is composed of two thin-film transistors (TFTs) and one capacitor (2T1C). It not only compensates the deviation of the threshold voltage of the driver TFT but also actualizes the large aperture ratio for organic light-emitting diode (OLED) devices as well as the traditional 2T1C circuit. We show the result of SPICE simulation for the pixel circuit; it indicates that the circuit can allocate the relatively large aperture ratio for OLED devices
Keywords :
LED displays; capacitors; driver circuits; organic light emitting diodes; thin film transistors; AM OLED displays; SPICE simulation; TFT circuit; active matrix; capacitor circuit; large aperture ratio; organic light-emitting diode; thin-film transistors; threshold-voltage compensation pixel circuit; Active matrix organic light emitting diodes; Apertures; Capacitors; Circuit simulation; Driver circuits; Flat panel displays; Organic light emitting diodes; SPICE; Thin film transistors; Threshold voltage; Active matrix; SPICE; compensation circuits; organic light-emitting diodes (OLEDs); thin-film transistors (TFTs);
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/TED.2006.890365
