Patent ID: 7053890

Claim:
A display device comprising: a first TFT comprising a gate electrode electrically connected to a (k+2)th gate signal line, a source region, and a drain region, with one of the source and drain regions electrically connected to a source signal line; a second TFT comprising a gate electrode electrically connected to a (k+1)th gate signal line, a source region, and a drain region, with one of the source and drain regions electrically connected to another one of the source and drain regions of the first TFT; a third TFT comprising a gate electrode electrically connected to a kth gate signal line, a source region, and a drain region, with one of the source and drain regions electrically connected to another one of the source and drain regions of the second TFT; a fourth TFT comprising a gate electrode electrically connected to the another one of the source and drain regions of the second TFT and to the one of the source and drain regions of the third TFT; and an electroluminescence element electrically connected to one of source and drain regions of the fourth TFT.