Patent ID: 6791129
Filing Date: 2004-09-14
Classification: G09G,H01L

Abstract:
A light emitting device comprising a source signal line driver circuit, a first gate signal line driver circuit, a second gate signal line driver circuit, and a pixel portion;wherein said pixel portion comprises a plurality of pixels; wherein each of said plurality of pixels comprises an EL element; a first EL driver TFT and a second EL driver TFT for controlling light emitted from said EL element; a switching TFT for controlling said first EL driver TFT and said second EL driver TFT; and an erasure TFT; wherein said first EL driver TFT and said second EL driver TFT are connected in parallel; wherein said switching TFT is controlled by said first gate signal line driver circuit; wherein said erasure TPT is controlled by said second gate signal line driver circuit; and wherein said EL element is controlled by said switching TFT or the erasure TFT.