Disclosed is a pixel circuit consisting of complementary N- and P-channel MOS field-effect transistors (or of thin-film transistors), a capacitor, and an organic light-emitting diode. This circuit stores a voltage signal that is used to control the amount of light emitted from the pixel by means of a...http://www.google.de/patents/US20010043173?utm_source=gb-gplus-sharePatent US20010043173 - FIELD SEQUENTIAL GRAY IN ACTIVE MATRIX LED DISPLAY USING COMPLEMENTARY TRANSISTOR PIXEL CIRCUITS
