Optical device
According to one embodiment, an optical device includes a first light-emitting element and a second light-emitting element, a light-shielding layer disposed to overlap a gap between the first light-emitting element and the second light-emitting element and including a first opening overlapping the first light-emitting element and a second opening overlapping the second light-emitting element, an overcoat layer covering the light-shielding layer, a first micro-lens disposed on the overcoat layer and overlapping the first opening and a second micro-lens disposed on the overcoat layer and overlapping the second opening, and an edge of each of the first micro-lens and the second micro-lens overlaps the light-shielding layer.
1 . An optical device comprising:
a drive circuit board;
a first light-emitting element and a second light-emitting element mounted on the drive circuit board;
a first insulating film covering an entirety of the first light-emitting element and an entirety of the second light-emitting element;
a light-shielding layer disposed to overlap a gap between the first light-emitting element and the second light-emitting element on the first insulating film, and including a first opening overlapping the first light-emitting element and a second opening overlapping the second light-emitting element;
an overcoat layer covering the light-shielding layer;
a first micro-lens disposed on the overcoat layer and overlapping the first opening; and
a second micro-lens disposed on the overcoat layer and overlapping the second opening,
wherein an edge of each of the first micro-lens and the second micro-lens overlaps the light-shielding layer,
the first insulating film is a transparent organic film, and has a flat top surface overlapping the first light-emitting element and the second light-emitting element,
a thickness of the first insulating film directly above the first light-emitting element and a thickness of the first insulating film directly above the second light-emitting element are smaller than a thickness of the first insulating film between the first light-emitting element and the second light-emitting element,
the light-shielding layer is formed on the flat top surface, and
the overcoat layer is in contact with the flat top surface.
2 . The optical device of claim 1 , wherein
the light-shielding layer has a film thickness of 5 μm or less.
3 . The optical device of claim 1 , wherein
the light-shielding layer has a film thickness of 10 μm or more.
4 . The optical device of claim 1 , wherein
the light-shielding layer includes at least a first layer and a second layer between the first insulating film and the overcoat layer,
the first layer is in contact with the first insulating film, and
the second layer is covered by the overcoat layer.
5 . The optical device of claim 1 , further comprising:
a spacer disposed on the overcoat layer; and
a transparent cover member supported by the spacer and opposing the first micro-lens and the second micro-lens.
6 . The optical device of claim 1 , wherein
the light-shielding layer is formed into a grid pattern in plan view.
7 . The optical device of claim 6 , wherein
the first opening and the second opening are formed into a quadrangular shape.
8 . The optical device of claim 6 , wherein
the first opening and the second opening are formed into a circular shape.
9 . The optical device of claim 1 , wherein
the light-shielding layer is formed of a conductive material and is grounded.
10 . The optical device of claim 9 , wherein
the light-shielding layer comprises a metal layer and a light-absorbing layer attached to a surface of the metal layer.
11 . The optical device of claim 1 , wherein
the first light-emitting element and the second light-emitting element are configured to emit light of colors different from each other.
12 . The optical device of claim 1 , wherein
a film thickness of the light-shielding layer is less than a thickness of the overcoat layer directly above the light-shielding layer.
13 . The optical device of claim 1 , wherein
the first insulating film is thicker than the light-shielding layer.
14 . An optical device comprising:
a drive circuit board;
a first light-emitting element and a second light-emitting element mounted on the drive circuit board;
a first insulating film covering an entirety of the first light-emitting element and an entirety of the second light-emitting element;
a light-shielding layer disposed to overlap a gap between the first light-emitting element and the second light-emitting element on the first insulating film and including a first opening overlapping the first light-emitting element and a second opening overlapping the second light-emitting element;
an overcoat layer covering the light-shielding layer;
a plurality of first micro-lenses disposed on the overcoat layer and overlapping the first opening; and
a plurality of second micro-lenses disposed on the overcoat layer and overlapping the second opening, wherein
the light-shielding layer is located between the plurality of first micro-lenses and the first insulating film, and between the plurality of second micro-lenses and the first insulating film,
the first insulating film is a transparent organic film, and has a flat top surface overlapping the first light-emitting element and the second light-emitting element,
a thickness of the first insulating film directly above the first light-emitting element and a thickness of the first insulating film directly above the second light-emitting element are smaller than a thickness of the first insulating film between the first light-emitting element and the second light-emitting element,
the light-shielding layer is formed on the flat top surface, and
the overcoat layer is in contact with the flat top surface.
15 . The optical device of claim 14 , wherein
a film thickness of the light-shielding layer is less than a thickness of the overcoat layer directly above the light-shielding layer.
16 . The optical device of claim 14 , wherein
the first insulating film is thicker than the light-shielding layer.
17 . An optical device comprising:
a drive circuit board;
a first light-emitting element and a second light-emitting element mounted on the drive circuit board;
a first insulating film covering an entirety of the first light-emitting element and an entirety of the second light-emitting element;
a light-shielding layer disposed to overlap a gap between the first light-emitting element and the second light-emitting element on the first insulating film, and including a first opening overlapping the first light-emitting element and a second opening overlapping the second light-emitting element;
an overcoat layer covering the light-shielding layer; and
a single micro-lens disposed on the overcoat layer and overlapping over the first opening and the second opening, wherein
the single micro-lens is in contact with the overcoat layer,
the first insulating film is a transparent organic film, and has a flat top surface overlapping the first light-emitting element and the second light-emitting element,
a thickness of the first insulating film directly above the first light-emitting element and a thickness of the first insulating film directly above the second light-emitting element are smaller than a thickness of the first insulating film between the first light-emitting element and the second light-emitting element,
the light-shielding layer is formed on the flat top surface, and
the overcoat layer is in contact with the flat top surface.
18 . The optical device of claim 17 , wherein
a film thickness of the light-shielding layer is less than a thickness of the overcoat layer directly above the light-shielding layer.
19 . The optical device of claim 17 , wherein
the first insulating film is thicker than the light-shielding layer.