LTPS-TFT Pixel Circuit Compensating for TFT Threshold Voltage Shift and IR-Drop on the Power Line for AMOLED Displays
Authors:
Open Access
- 1 January 2012
- journal article
- research article
- Published by Wiley in Advances in Materials Science and Engineering
- Vol. 2012, 1-5
Abstract
We propose a new pixel design for the active matrix organic light-emitting diode (AMOLED) using low-temperature polycrystalline silicon thin-film transistors (LTPS-TFTs). The proposed pixel is composed of four switching TFTs, one driving TFT (DTFT), and one capacitor. The simulation results are performed by AIM-SPICE software. The error rate of OLED output current with (threshold voltage) variation (0.3V) and power line drop by 1V are improved to about 1.67% and 15%, respectively. Thus, the proposed pixel circuit can successfully overcome drawbacks suffered from DTFT threshold voltage deviation and IR-drop on power line.Keywords
Funding Information
- National Science Council (NSC 98-2221-E-011-141, NSC 100-2221-E-011-016)
- National Science Council (NSC 98-2221-E-011-141, NSC 100-2221-E-011-016)
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