A Novel Voltage-Programmed Pixel Circuit with VT-Shift Compensation for AMOLED Displays

被引：0
|
作者：
Yang, Maofeng
Papadopoulos, Nikolas P.
Lee, Czang-Ho
Wong, William S.
Sachdev, Manoj
机构：
来源：
2013 IEEE CUSTOM INTEGRATED CIRCUITS CONFERENCE (CICC) | 2013年
关键词：
THIN-FILM TRANSISTORS; LIGHT-EMITTING-DIODES; INSTABILITY; DEGRADATION;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A novel voltage-programmed pixel circuit using hydrogenated amorphous silicon (a-Si:H) thin-film transistors (TFTs) for active-matrix organic light-emitting diode (AMOLED) displays is proposed. The threshold voltage shift (Delta V-T) of the drive TFT due to electrical stress is compensated by the change of gate-to-source voltage (Delta V-GS) generated by the Delta V-T-dependent charge transfer from the drive TFT to a TFT-based Metal-Insulator-Semiconductor (MIS) capacitor. Another MIS capacitor is used to improve OLED drive currents. Measurement results verify the effectiveness and speed of the proposed pixel circuit.
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页数：4
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