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A high-speed driver for current-programmed active-matrix OLED displays

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3 Author(s)
Jafarabadiashtiani, S. ; Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada ; Servati, Peyman ; Nathan, A.

This paper proposes a new driving technique for improving settling time in current-programmed active-matrix organic light-emitting diode (AMOLED) pixel circuits. Here, a current feedback along with a second generation current conveyer is employed as the driver to cancel the effect of parasitic line capacitances. Circuit-level simulation using a high-voltage CMOS process for external driver and a VerligA model for amorphous silicon thin film transistors shows more than 8 times reduction in programming time of a typical current programmed pixel circuit for programming current of 100nA.

Published in:

IEEE-NEWCAS Conference, 2005. The 3rd International

Date of Conference:

19-22 June 2005