A Direct Fast Feedback Current Driver Using an Inverting Amplifier for High-Quality AMOLED Displays

A direct fast feedback current (DFFC) driver is proposed for high-quality AMOLED displays with inverted type pixels. The driver is implemented using an integrator with a loop compensator and an inverting amplifier with a switchedcapacitor gain circuit. Demultiplexing operation is realized to drive t...

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Veröffentlicht in:	IEEE transactions on circuits and systems. II, Express briefs Express briefs, 2012-07, Vol.59 (7), p.414-418
Hauptverfasser:	Jeon, Jin-Yong, Jeon, Yong-Joon, Son, Young-Suk, Cho, Gyu-Hyeong
Format:	Artikel
Sprache:	eng
Schlagworte:	Accuracy Active matrix organic light emitting diodes Active-matrix organic light-emitting diode (AMOLED) Capacitors column driver Demultiplexing fast feedback current driver feedback current driver Feedback loop Impedance Integrated circuit modeling
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Beschreibung
Zusammenfassung:	A direct fast feedback current (DFFC) driver is proposed for high-quality AMOLED displays with inverted type pixels. The driver is implemented using an integrator with a loop compensator and an inverting amplifier with a switchedcapacitor gain circuit. Demultiplexing operation is realized to drive two channels using one driver. The measurement result shows settling time of 7 μs for a panel load of 1.5 kΩ/100 pF. The driver is fabricated in a 0.35-μm CMOS process, and the area is 120 × 131 μm 2 per two channels.
ISSN:	1549-7747 1558-3791
DOI:	10.1109/TCSII.2012.2198978