Patent ID: 8373694

Claim:
A display comprising: a pixel portion over a substrate; m signal lines S 1 , S 2 , . . . , and S m ; a plurality of scanning lines extending across said m signal lines on the pixel portion; a signal source circuit over the substrate, the signal source circuit including i signal sources C 1 , C 2 , . . . , and C i ; and a switching circuit comprising n switching units U 1 , U 2 , . . . , and U n , wherein one of the signal lines is connectable to at least three of the signal sources through one of the switching units, but electrically connected to only one of said at least three of the signal sources at a time, wherein at least a first signal line and a second signal line of the m signal lines are connectable to at least a same one of the signal sources, and wherein the first signal line is connectable to at least one signal source to which the second signal line is not connectable.