Display device and method for manufacturing the same

A method for manufacturing a display device, the method comprising the steps of:

• forming a first organic resin layer over a first substrate;
• forming a first insulating film over the first organic resin layer;
• forming a first element layer over the first insulating film;
• forming a second organic resin layer over a second substrate;
• forming a second insulating film over the second organic resin layer;
• forming a second element layer over the second insulating film;
• bonding the first substrate and the second substrate so as to enclose the first element layer and the second element layer;
• separating the first substrate from the first organic resin layer by reducing adhesion between the first organic resin layer and the first substrate;
• bonding the first organic resin layer and a first flexible substrate with a first bonding layer;
• separating the second substrate from the second organic resin layer by reducing adhesion between the second organic resin layer and the second substrate;
• and
• bonding the second organic resin layer and a second flexible substrate with a second bonding layer,
• wherein the first element layer comprises a pixel portion and a circuit portion,
• wherein the pixel portion comprises a display element and a first transistor comprising a first oxide semiconductor layer,
• wherein the circuit portion comprises a second transistor comprising a second oxide semiconductor layer, and
• wherein the second element layer comprises a coloring layer and a light-blocking layer.