Title :
A Direct Fast Feedback Current Driver Using an Inverting Amplifier for High-Quality AMOLED Displays
Author :
Jeon, Jin-Yong ; Jeon, Yong-Joon ; Son, Young-Suk ; Cho, Gyu-Hyeong
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea
fDate :
7/1/2012 12:00:00 AM
Abstract :
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 μm2 per two channels.
Keywords :
CMOS analogue integrated circuits; LED displays; amplifiers; driver circuits; CMOS process; DFFC driver; active-matrix organic light-emitting diode displays; direct fast feedback current driver; high-quality AMOLED displays; inverting amplifier; loop compensator; size 0.35 mum; switched-capacitor gain circuit; time 7 mus; Accuracy; Active matrix organic light emitting diodes; Capacitors; Demultiplexing; Feedback loop; Impedance; Integrated circuit modeling; Active-matrix organic light-emitting diode (AMOLED); column driver; fast feedback current driver; feedback current driver;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2012.2198978
