Light-emitting device

A light-emitting device comprising:

• a transistor comprising:
• a gate electrode;
• a first insulating layer over the gate electrode;
• a semiconductor layer over the first insulating layer;
• and
• a first electrode and a second electrode over and electrically connected to the semiconductor layer;
• a capacitor comprising:
• the gate electrode;
• the first insulating layer;
• and
• the first electrode;
• a third electrode over and electrically connected to the second electrode;
• a first partition comprising an opening over the third electrode and covering an end portion of the third electrode;
• a second partition over the first partition;
• a light-emitting layer over the third electrode, the first partition, and the second partition;
• and
• a fourth electrode over the light-emitting layer,
• wherein the second partition comprises a metal oxide having a porous structure in which a plurality of holes is included, and
• wherein the capacitor overlaps with the second partition.