摘要
The AC driving scheme for OLEDs,which uses the pixel circuit with two transistors and one capacitor(2T1C),can extend the lifetime of the active matrix organic light-emitting diode(AMOLED) on silicon,but there are switching effects during the switch of AC signals,which result in the voltage variation on the storage capacitor and cause the current glitch in OLED.That would decrease the gray scale of the OLED.This paper proposes a novel pixel circuit consisting of three transistors and one capacitor to realize AC driving for the OLED-on-silicon while restraining the switching effects.Simulation results indicate that the proposed circuit is less sensitive to switching effects.Also,another pixel circuit is proposed to further reduce the driving current to meet the current constraints for the OLED-on-silicon.
The AC driving scheme for OLEDs, which uses the pixel circuit with two transistors and one capacitor （2T1C）, can extend the lifetime of the active matrix organic light-emitting diode （AMOLED） on silicon, but there are switching effects during the switch of AC signals, which result in the voltage variation on the storage capacitor and cause the current glitch in OLED. That would decrease the gray scale of the OLED. This paper proposes a novel pixel circuit consisting of three transistors and one capacitor to realize AC driving for the OLED-on-silicon while restraining the switching effects. Simu- lation results indicate that the proposed circuit is less sensitive to switching effects. Also, another pixel circuit is proposed to further reduce the driving current to meet the current constraints for the OLED-on-silicon.
基金
supported by Tianjin Municipal Key Scientific and Technological Project (No.033187011)
