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A Novel LTPS-TFT Pixel Circuit Compensating for TFT Threshold-Voltage Shift and OLED Degradation for AMOLED

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2 Author(s)
Chih-Lung Lin ; Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan ; Yung-Chih Chen

This letter presents a novel pixel circuit that uses low-temperature polycrystalline-silicon thin-film transistors (LTPS-TFTs) composed of one driving and four switching TFTs for active-matrix organic light-emitting diodes (AMOLEDs) with a voltage-source method. The proposed circuit effectively enables threshold-voltage-shift correction of the drive TFT and compensates for degradation of the OLED using a feedback structure

Published in:

Electron Device Letters, IEEE  (Volume:28 ,  Issue: 2 )