Design of Organic TFT Pixel Electrode Circuit for Active-Matrix OLED Displays

Abstract

<p class="MsoNormal" style="text-align: left; margin: 0cm 0cm 0pt; layout-grid-mode: char;" align="left"><span class="text"><span style="font-family: ";Arial";,";sans-serif";; font-size: 9pt;">A new current-programming pixel circuit for active-matrix organic light-emitting diode (AM-OLED) displays, composed of four organic thin-film transistors (OTFTs) and one capacitor, has been designed, simulated and evaluated. The most critical issue in realizing AMOLED displays with OTFTs is the variation and aging of the driving-TFTs and degradation of OLEDs. This can cause image sticking or degradation of image quality. These problems require compensation methods for high-quality display applications, and pixel level approach is considered to be one of the most important factors for improving display image quality. Our design shows that the current OLED and OTFT technology can be implemented for AMOLED displays, compensating the degradation of OTFT device characteristics.</span></span><span style="font-family: ";Arial";,";sans-serif";; font-size: 9pt;"></span></p&gt

A Compact SPICE Model for Organic TFTs and Applications to Logic Circuit Design

“…After more than a decade of interdisciplinary research efforts to better understand the materials, processing, and device architecture requirements, it is now possible to satisfy both performance and reliability requirements needed in product applications [2]. Flexible active matrix backplanes based on solution-processed organic field-effect transistors on low-temperature plastic substrates have been demonstrated [3], and are now capable of driving thin film displays, based on either liquid-crystal displays (LCD) or organic light-emitting diodes (OLED), as well as large-area sensor arrays, such as organic photodetectors (OPD) [4].…”