Display device

A display device comprising:

• a substrate;
• a transistor on the substrate;
• and
• a light-emitting device electrically connected to the transistor,
• wherein the substrate comprises
• a first layer,
• a second layer between the first layer and the transistor, and
• a third layer between the second layer and the transistor,
• the first layer and the third layer comprise organic materials, and
• the first layer and the third layer have different scattering vector (q) values in small-angle X-ray scattering (SAXS).

A display device comprising:

• a substrate;
• a transistor on the substrate;
• and
• a light-emitting device electrically connected to the transistor,
• wherein the substrate comprises
• a first layer,
• a second layer between the first layer and the transistor, and
• a third layer between the second layer and the transistor, and
• the first layer and the third layer comprise organic materials, and
• the first layer and the third layer are different in transmittance at a specific wavelength.