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

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4 Author(s)
Jin-Yong Jeon ; Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea ; Yong-Joon Jeon ; Young-Suk Son ; Gyu-Hyeong Cho

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.

Published in:

IEEE Transactions on Circuits and Systems I: Regular Papers  (Volume:59 ,  Issue: 10 )