A High-Speed Current-Mode Data Driver With Push-Pull Transient Current Feedforward for Full-HD AMOLED Displays

Author

Jeon, Yong-Joon ; Jeon, Jin-Yong ; Son, Young-Suk ; Huh, Jin ; Cho, Gyu-Hyeong

Author_Institution

Div. of Electr. Eng., KAIST, Daejeon, South Korea

Volume

45

Issue

9

fYear

2010

Firstpage

1881

Lastpage

1895

Abstract

A push-pull transient current feedforward driver is designed to have a complete push-pull function and loop gain control that enhances the data current drivability. The sink and source current capability of the proposed driver makes it insensitive to the initial voltage levels on the data lines and provides a reduced settling time. The gain control in the positive feedback loop offers a fast settling time without ringing over the complete range of pixel drive currents. The data driver exhibits a settling time of better than 6 μs for drive currents from 20 nA to 5 μA into an equivalent full-HD AMOLED display panel parasitic load of 4 kΩ series resistance and 90 pF shunt capacitance. The driver consumes a static current of 4.5 μA/channel.

Keywords

LED displays; current-mode circuits; feedback; capacitance 90 pF; current 20 nA to 5 muA; full HD AMOLED display; high speed current mode data driver; loop gain control; parasitic load; positive feedback loop; push pull function; push pull transient current feedforward; resistance 4 kohm; settling time; Active matrix organic light emitting diodes; Capacitance; Driver circuits; Feedforward neural networks; Pixel; Programming; Transient analysis; AMOLED; PP-TCF; TCF; data driver; full-HD; push-pull; transient current feedforward;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/JSSC.2010.2050949

Filename

5556414