Improved Transient Current Feedforward Output Buffer for Fast and Compact Active-Matrix OLED Column Drivers

Author

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

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea

Volume

56

Issue

7

fYear

2009

fDate

7/1/2009 12:00:00 AM

Firstpage

560

Lastpage

564

Abstract

An improved transient current feedforward driver is designed for compact implementation and low-power consumption by adopting the demultiplexing operation of the proposed driver based on the fast driving speed of 6 mus for the panel load of 6 kOmega/40 pF, which is equivalent to that of extended-graphic-array active-matrix organic light-emitting diode displays. The driver has the structural advantages of simple frequency compensation and low-power consumption, which come from the elimination of an internal operational transconductance amplifier (OTA). The chip implementation confers that the area of the driver is 32.5 times217 mum², and the power consumption is 6.5 muA for each channel.

Keywords

buffer circuits; driver circuits; feedforward; operational amplifiers; organic light emitting diodes; active-matrix OLED column drivers; demultiplexing operation; extended-graphic-array active-matrix; frequency compensation; operational transconductance amplifier; organic light-emitting diode displays; transient current feedforward output buffer; Active-matrix organic light-emitting diode (AMOLED); column driver; transient current feedforward;

fLanguage

English

Journal_Title

Circuits and Systems II: Express Briefs, IEEE Transactions on

Publisher

ieee

ISSN

1549-7747

Type

jour

DOI

10.1109/TCSII.2009.2023300

Filename

5075578