Active matrix display device

An active matrix display device comprising a plurality of pixels arranged in matrix, each pixel comprising:

• a bottom gate thin film transistor formed over a substrate, the bottom gate thin file transistor comprising:
• a semiconductor film comprising a metal oxide wherein the metal includes In;
• a gate insulating film adjacent to the semiconductor film;
• and
• a gate electrode adjacent to the semiconductor film with the gate insulating film interposed therebetween;
• a first insulating film formed over the bottom gate thin film transistor;
• a first electrode formed over the first insulating film and electrically connected to the bottom gate thin film transistor;
• a second insulating film formed on a first portion of the first electrode wherein the second insulating film has an opening to expose a second portion of the first electrode;
• a light emitting layer formed over the first electrode;
• and
• a second electrode formed over the light emitting layer,
• wherein the first electrode includes a first metal layer and a second metal layer formed on a portion of the first metal layer,
• wherein the second metal layer is not formed in the second portion of the first electrode so that a side surface of the second metal layer closest to the second portion is covered by the second insulating film.