Abstract
This work presents a new external driving scheme that uses the current feedback method with a 3T1C pixel circuit. The proposed circuit provides a stable OLED driving current by compensating for the threshold voltage shift of amorphous-silicon thin-film transistors (a-Si TFTs). For fabricated a-Si TFTs and the 0.35 μ m CMOS process associated with the proposed driving scheme, measurements reveal that the normalized OLED current degradation is less than 5% after 60 hours of operation at 60 °C. Moreover, for a data line load of 1.69 KΩ110 pF, the relative error rates between data currents and OLED currents are less than 4% within a settling time of 19. μm
Original language | English |
---|---|
Article number | 6588572 |
Pages (from-to) | 783-786 |
Number of pages | 4 |
Journal | IEEE/OSA Journal of Display Technology |
Volume | 9 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2013 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering