Light-emitting device and display apparatus
A light-emitting device of an embodiment of the present disclosure includes: an insulating layer having a first surface and a second surface that are opposed to each other; multiple columnar structures each including a columnar crystalline structure of a first electrically-conductive type erected in a direction perpendicular to the first surface of the insulating layer, and an active layer and a semiconductor layer of a second electrically-conductive type that are stacked in this order on a side surface and a top surface of the columnar crystalline structure; and a light-blocking member provided between the multiple columnar structures and having an inclined surface of less than 90° relative to the first surface.
1 . A light-emitting device, comprising:
an insulating layer having a first surface and a second surface that are opposed to each other;
multiple columnar structures each including a columnar crystalline structure of a first electrically-conductive type erected in a direction perpendicular to the first surface of the insulating layer, and an active layer and a semiconductor layer of a second electrically-conductive type that are stacked in this order on a side surface and a top surface of the columnar crystalline structure;
a light-blocking member provided between the multiple columnar structures and having an inclined surface of greater than 90° relative to the first surface;
a first electrode to be in contact with the columnar crystalline structure of each of the multiple columnar structures from the second surface of the insulating layer; and
a second electrode that continuously covers a side surface and a top surface of the semiconductor layer of each of the multiple columnar structures on a side of the first surface of the insulating layer.
2 . The light-emitting device according to claim 1 , wherein the light-blocking member has light reflectivity.
3 . The light-emitting device according to claim 1 , wherein the light-blocking member has a forward tapered shape.
4 . The light-emitting device according to claim 1 , wherein the light-blocking member includes multiple wiring layers.
5 . The light-emitting device according to claim 1 , further comprising a drive substrate provided on a side of the second surface of the insulating layer and being electrically coupled to the columnar structures and the semiconductor layer via the first electrode and the second electrode.
6 . The light-emitting device according to claim 5 , wherein the light-blocking member penetrates the second electrode and the insulating layer.
7 . The light-emitting device according to claim 1 , wherein the light-blocking member includes an electrically-conductive material.
8 . The light-emitting device according to claim 5 , further comprising a wiring layer including multiple first contact electrodes each exposed to a surface facing the drive substrate on the side of the second surface of the insulating layer,
wherein the first electrode, the second electrode, and the light-blocking member are electrically coupled to each of the multiple first contact electrodes.
9 . The light-emitting device according to claim 8 , wherein
the drive substrate further includes multiple second contact electrodes each exposed to a surface facing the insulating layer, and
the insulating layer and the drive substrate are bonded to each other via the first contact electrodes and the second contact electrodes.
10 . The light-emitting device according to claim 1 , wherein
the multiple columnar structures are provided in matrix on the first surface of the insulating layer, and
the light-blocking member is provided in a grid pattern on the first surface of the insulating layer.
11 . The light-emitting device according to claim 1 , further comprising an insulating film provided on the first surface of the insulating layer and covering a side surface and a top surface of each of the multiple columnar structures,
wherein the light-blocking member is provided to penetrate the insulating film.
12 . The light-emitting device according to claim 1 , further comprising, above the columnar structures, a wavelength conversion section that converts a wavelength of light emitted from the active layer.
13 . The light-emitting device according to claim 12 , wherein the wavelength conversion section includes multiple wavelength conversion layers that each convert light emitted from the active layer of each of the multiple columnar structures into a wavelength different from one another.
14 . A display apparatus, comprising:
one or more light-emitting devices,
each of the one or more light-emitting devices including:
an insulating layer having a first surface and a second surface that are opposed to each other;
multiple columnar structures each including a columnar crystalline structure of a first electrically-conductive type erected in a direction perpendicular to the first surface of the insulating layer, and an active layer and a semiconductor layer of a second electrically-conductive type that are stacked in this order on a side surface and a top surface of the columnar crystalline structure,
a light-blocking member provided between the multiple columnar structures and having an inclined surface of greater than 90° relative to the first surface;
a first electrode to be in contact with the columnar crystalline structure of each of the multiple columnar structures from the second surface of the insulating layer; and
a second electrode that continuously covers a side surface and a top surface of the semiconductor layer of each of the multiple columnar structures on a side of the first surface of the insulating layer.
15 . The display apparatus according to claim 14 , further comprising a drive substrate provided on a side of the second surface of the insulating layer and being electrically coupled to the columnar structures and the semiconductor layer via the first electrode and the second electrode.
16 . The display apparatus according to claim 15 , wherein the light-blocking member penetrates the second electrode and the insulating layer.
17 . The display apparatus according to claim 14 , wherein the light-blocking member includes an electrically-conductive material.
18 . The display apparatus according to claim 15 , further comprising a wiring layer including multiple first contact electrodes each exposed to a surface facing the drive substrate on the side of the second surface of the insulating layer,
wherein the first electrode, the second electrode, and the light-blocking member are electrically coupled to each of the multiple first contact electrodes.
19 . The display apparatus according to claim 18 , wherein
the drive substrate further includes multiple second contact electrodes each exposed to a surface facing the insulating layer, and
the insulating layer and the drive substrate are bonded to each other via the first contact electrodes and the second contact electrodes.
20 . The display apparatus according to claim 14 , further comprising an insulating film provided on the first surface of the insulating layer and covering a side surface and a top surface of each of the multiple columnar structures,
wherein the light-blocking member is provided to penetrate the insulating film.