Patent ID: 6528950
Filing Date: 2003-03-04
Classification: G09G,H01L

Abstract:
An electronic device having a source signal line side driver circuit, a gate signal line side driver circuit, and a pixel portion comprising;a plurality of source signal lines; a plurality of gate signal lines, each of said plurality of gate signal lines intersecting said plurality of said source signal lines; a plurality of electric current supply lines; a plurality of connection control lines a plurality of pixels, each of said plurality of pixels comprising a switching TFT, an EL driver TFT, an EL element and first or second connection transistor; wherein a gate electrode of said switching TFT is electrically connected to one of said plurality of gate signal lines, one of impurity regions of said switching TFT is electrically connected to one of said plurality of said source signal lines and another one of said impurity regions of said switching TFT is electrically connected to a gate electrode of said EL driver TFT, wherein one of impurity regions of said EL driver TFT is electrically connected to one of said plurality of electric current supply lines and another one of said impurity regions of said EL driver TFT is electrically connected to said EL element, wherein a gate electrode of said first connection transistor is electrically connected to one of said plurality of connection control lines, one of impurity regions of said first connection transistor is electrically connected to one of said source signal lines and another one of said impurity regions of said first connection transistor is electrically connected to one of said plurality of electric current supply lines, wherein a gate electrode of said second connection transistor is electrically connected to one of said plurality of connection control lines, one of impurity regions of said second connecting transistor is electrically connected to one of said plurality of gate signal lines and another one of said impurity regions of second connecting transistor is electrically connected to one of said plurality of electric current supply lines.