Title :
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
fDate :
7/1/2009 12:00:00 AM
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;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2009.2023300
