DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF
According to one embodiment, a display device includes a lower electrode, a rib, an organic layer, an upper electrode, a support body having a first surface and a second surface, a first lens provided on the first surface immediately above the lower electrode and formed into a convex shape, an overcoat layer which covers the first lens, a second lens provided on the second surface immediately above the rib and formed into a convex shape, and a light-shielding layer which covers the second lens. The first lens includes at least a first layer which is in contact with the first surface and has a first refractive index, and a second layer which has a second refractive index higher than the first refractive index and overlaps the first layer.
1 . A display device comprising:
a substrate;
a lower electrode provided above the substrate;
a rib which covers a peripheral portion of the lower electrode;
an organic layer provided on the lower electrode and including a light emitting layer;
an upper electrode provided on the organic layer;
a support body provided above the upper electrode and having a first surface which faces the lower electrode, and a second surface on a side opposite to the first surface;
a first lens provided on the first surface immediately above the lower electrode and formed into a convex shape;
an overcoat layer which covers the first lens;
a second lens provided on the second surface immediately above the rib and formed into a convex shape; and
a light-shielding layer which covers the second lens, wherein
the first lens comprises at least a first layer which is in contact with the first surface and has a first refractive index, and a second layer which has a second refractive index higher than the first refractive index and overlaps the first layer.
2 . The display device of claim 1 , wherein
the first lens further comprises a third layer which has a third refractive index higher than the second refractive index and overlaps the second layer.
3 . The display device of claim 2 , wherein
an outer edge of the first layer, an outer edge of the second layer and an outer edge of the third layer are formed concentrically in plan view.
4 . The display device of claim 2 , wherein
each of the first layer, the second layer and the third layer is formed of an organic material.
5 . The display device of claim 1 , wherein
the second lens is formed of an organic material.
6 . The display device of claim 1 , further comprising:
a cap layer provided on the upper electrode;
a sealing layer provided on the cap layer and formed of an inorganic material; and
an insulating layer provided on the sealing layer and formed of an organic material, wherein
the overcoat layer is attached to the insulating layer.
7 . The display device of claim 1 , wherein
the support body is a color filter.
8 . A manufacturing method of a display device, comprising:
forming a first lens on a first surface of a support body;
covering the first lens with an overcoat layer;
forming a second lens on a second surface of the support body;
forming a light-shielding layer which covers the second lens; and
attaching the overcoat layer to an insulating layer provided above a display element, wherein
the forming the first lens includes at least:
forming a first layer on the first surface by using a material having a first refractive index; and
forming a second layer on the first layer by using a material having a second refractive index which is higher than the first refractive index.
9 . The manufacturing method of claim 8 , wherein
the second lens is formed at a position which does not overlap the first lens.
10 . The manufacturing method of claim 8 , wherein
the first lens is provided immediately above the display element, and
the second lens is provided immediately above a rib which surrounds the display element.
11 . The manufacturing method of claim 8 , wherein
the forming the first lens includes patterning the first layer and the second layer in block.
12 . The manufacturing method of claim 8 , wherein
the forming the first lens includes heating the first layer and the second layer, and pressing a mold having a recess portion from an upper side of the second layer.
13 . The manufacturing method of claim 8 , wherein
the forming the first lens further includes:
forming a third layer on the second layer by using a material having a third refractive index which is higher than the second refractive index; and
patterning the first layer, the second layer and the third layer in block.
14 . The manufacturing method of claim 8 , wherein
the forming the first lens further includes:
forming a third layer on the second layer by using a material having a third refractive index which is higher than the second refractive index; and
heating the first layer, the second layer and the third layer, and pressing a mold having a recess portion from an upper side of the third layer.
15 . The manufacturing method of claim 8 , wherein
each of the first lens and the second lens is formed of an organic material.