Patent ID: 6774573
Filing Date: 2004-08-10
Classification: G09G,H01L

Abstract:
An EL display device comprising:a substrate; a pixel portion comprising at least a first pixel and a second pixels formed over the substrate, wherein the first and second pixels are adjacent to each other, each of said first and second pixels comprising: a first thin film transistor; a second thin film transistor, wherein the second thin film transistors is switched by the first thin film transistor; a flip-flop circuit; an EL element comprising a first electrode, a second electrode, and an EL layer provided between the first and second electrodes, wherein the first electrode is electrically connected to the second thin film transistor, a shift register comprising the flip-flop circuits, formed in the pixel portion, wherein the flip-flop circuit of the first pixel is electrically connected to the flip-flop circuit of the second pixel in series, wherein a light is emitted to the side opposite to the substrate.