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A New AMOLED Pixel Circuit Employing a-Si:H TFTs for High Aperture Ratio  

Shin, Hee-Sun (School of Electrical Engineering & Computer Science #50, Seoul National University)
Lee, Jae-Hoon (School of Electrical Engineering & Computer Science #50, Seoul National University)
Jung, Sang-Hoon (School of Electrical Engineering & Computer Science #50, Seoul National University)
Kim, Chang-Yeon (School of Electrical Engineering & Computer Science #50, Seoul National University)
Han, Min-Koo (School of Electrical Engineering & Computer Science #50, Seoul National University)
Publication Information
Journal of Information Display / v.6, no.2, 2005 , pp. 12-15 More about this Journal
Abstract
We propose a new pixel design for active matrix organic light emitting diode (AM-OLED) displays using hydrogenated amorphous silicon thin-film transistors (a-Si:H TFTs). The pixel circuit is composed of five TFTs and one capacitor, and employs only one additional control signal line. It is verified by SPICE simulation results that the proposed pixel compensates the threshold voltage shift of the a-Si:H TFTs and OLED.
Keywords
a Si:H TFT; AMOLED; pixel circuit; compensation pixel circuit; voltage programming pixel circuit;
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