THIN FILM TRANSISTORS COUPLED IN SERIES VIA SEMICONDUCTOR LAYER HAVING PREDETERMINED RESISTANCE, ACTIVE MATRIX OLED USING THE SAME, AND MANUFACTURING METHOD OF THE ACTIVE MATRIX OLED

摘要

Series thin film transistor, and active matrix organic electroluminescent device and the manufacturing method using the active matrix organic light-emitting device are provided. Tandem thin-film transistor has the second main part, and there is the first channel region and the first main part, first main part have positioned at its two sides the first source/drain region, second channel region and the second source/drain region, positioned at its two sides, first source/drain region and the second source/drain region is located between the drain region of the first main part and the drain region of the second main part of series connection, and first source electrode/drain region, the second source electrode of wherein at least one/drain region includes semiconductor layer, the semiconductor layer is with different coupling parts and conductive type. The first grid of the first channel region on the semiconductor layer. On floor identical with first grid, second grid is positioned transverse to the second channel region. Therefore, in the series for implementing thin film transistor (TFT), it is the limitation in design rule using the series thin film transistor that the connection by using the semiconductor layer resistance with predetermined resistance, which carrys out impurity, to alleviate the production of organic electroluminescent. The increase of aperture ratio may be implemented in scented device.