Display device

A display device comprising:

• a first substrate;
• a second substrate;
• a display element between one surface of the first substrate and one surface of the second substrate;
• an anti-reflection film including a plurality of projections over the other surface of the second substrate;
• and
• a protective layer having a lower refractive index than the plurality of projections between side surfaces of the plurality of projections, the protective layer being in contact with the side surfaces of the plurality of projections,
• wherein the second substrate is a light-transmitting substrate,
• wherein an angle made by a base and a slope of each of the plurality of projections is equal to or greater than 84° and less than 90°,
• wherein each of the plurality of projections is formed of a film comprising fluoride, oxide or nitride, and
• wherein each of the plurality of projections is formed of a material of which a refractive index continuously changes toward the second substrate.

A display device comprising:

• a first light-transmitting substrate;
• a second light-transmitting substrate;
• a display element between one surface of the first light-transmitting substrate and one surface of the second light-transmitting substrate;
• a first anti-reflection film including a plurality of projections over the other surface of the first light-transmitting substrate;
• a second anti-reflection film including a plurality of projections over the other surface of the second light-transmitting substrate;
• a first protective layer having a lower refractive index than the plurality of projections of the first anti-reflection film between side surfaces of the plurality of projections of the first anti-reflection film, the first protective layer being in contact with the side surfaces of the plurality of projections of the first anti-reflection film;
• and
• a second protective layer having a lower refractive index than the plurality of projections of the second anti-reflection film side surfaces of between the plurality of projections of the second anti-reflection film, the second protective layer being in contact with the side surfaces of the plurality of projections of the second anti-reflection film,
• wherein an angle made by a base and a slope of each of the plurality of projections of the first anti-reflection film and the plurality of projections of the second anti-reflection film is equal to or greater than 84° and less than 90°,
• wherein each of the plurality of projections of the first anti-reflection film is formed of a material of which a refractive index continuously changes toward the first light-transmitting substrate, and
• wherein each of the plurality of projections of the second anti-reflection film is formed of a material of which a refractive index continuously changes toward the second light-transmitting substrate.

A display device comprising:

• an anti-reflection film including a plurality of projections over a display screen;
• and
• a protective layer having a lower refractive index than the plurality of projections between side surfaces of the plurality of projections, the protective layer being in contact with the side surfaces of the plurality of projections,
• wherein each of the plurality of projections is formed of a material of which a refractive index continuously changes toward the display screen.