It is an object of the present invention to prevent a bright pixel defect
caused by continuous current flow into a pixel, or to provide a display
device in which effects on the surrounding pixels due to concentration of
current on a part of the pixel can be suppressed. A display device
according to the invention has a wiring for supplying current provided
over an insulating surface, and a pixel electrode connected to the
wiring. The pixel electrode has a layered structure of a plurality of
different conductive films. Further, the pixel electrode has a narrow
width region at least in a region where the wiring and the pixel
electrode are electrically connected to each other. For example, a
layered structure of a metal film and a transparent electrode can be used
as a plurality of different conductive films.