A Double Zeros Compensated Direct Fast Feedback Current Driver for Medium to Large 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

10

fYear

2012

Firstpage

2197

Lastpage

2209

Abstract

A current feedback driver with double zeros compensation is proposed for medium to large AMOLED displays. The zeros for lead compensation are implemented with switched-capacitor circuits to reduce chip area. The selection rules for compensation capacitors and zero capacitors are described to obtain wide bandwidth and high speed. The proposed driver has a settling time of 7 μs for the panel load of 10 kΩ/100 pF. De-multiplexing operation is realized to drive two channels using one proposed driver. The chip area is 120 × 183 μm² per two channels in a 0.35 μm CMOS process.

Keywords

LED displays; organic light emitting diodes; switched capacitor networks; AMOLED displays; CMOS process; active matrix OLED displays; chip area; compensation capacitor; demultiplexing operation; double zeros compensated direct fast feedback current driver; double zeros compensation; lead compensation; switched capacitor circuit; zero capacitor; Bandwidth; Capacitors; Clocks; Feedback loop; Impedance; Resistance; Resistors; AMOLED; column driver; double zeros; fast feedback current driver; feedback driver; lead compensation;

fLanguage

English

Journal_Title

Circuits and Systems I: Regular Papers, IEEE Transactions on

Publisher

ieee

ISSN

1549-8328

Type

jour

DOI

10.1109/TCSI.2012.2188948

Filename

6178291