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

Volume

59

Issue

7

fYear

2012

fDate

7/1/2012 12:00:00 AM

Firstpage

414

Lastpage

418

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;

fLanguage

English

Journal_Title

Circuits and Systems II: Express Briefs, IEEE Transactions on

Publisher

ieee

ISSN

1549-7747

Type

jour

DOI

10.1109/TCSII.2012.2198978

Filename

6211408