Display device
A display device includes a substrate, a plurality of light-emitting elements and a plurality of transistors provided to the substrate, a first organic insulating film that is provided covering the transistors and is in direct contact with at least one of a source electrode and a drain electrode of the transistors, an anode electrode provided on the first organic insulating film and electrically coupled to each of the light-emitting elements, a cavity formed in the first organic insulating film and recessed toward the substrate, and a reflective layer provided covering a side and a bottom of the cavity formed in the first organic insulating film.
1 . A display device comprising:
a substrate;
a plurality of light-emitting elements and a plurality of transistors provided to the substrate;
a first organic insulating film that is provided covering the transistors and is in direct contact with at least one of a source electrode and a drain electrode of the transistors;
an anode electrode provided on the first organic insulating film and electrically coupled to each of the light-emitting elements;
a cavity formed in the first organic insulating film and recessed toward the substrate;
a reflective layer provided covering a side and a bottom of the cavity formed in the first organic insulating film; and
a counter electrode provided between the anode electrode and the first organic insulating film and facing the anode electrode through an inorganic insulating film,
wherein
the light-emitting element is disposed in the cavity and is electrically coupled to the reflective layer at the bottom of the cavity,
a side reflective layer of the reflective layer that covers the side of the cavity faces a side surface of the light-emitting element,
the anode electrode, the inorganic insulating film, and the counter electrode are provided covering the side and the bottom of the cavity, and
the reflective layer is coupled to the anode electrode at the bottom of the cavity.
2 . The display device according to claim 1 , further comprising:
a second organic insulating film provided covering the anode electrode, wherein
the second organic insulating film has a first contact hole formed in a region overlapping the cavity and a second contact hole formed in a region not overlapping the cavity and overlapping the anode electrode, and
the reflective layer is provided on the second organic insulating film and is coupled to the anode electrode at the bottom of the cavity through the first contact hole and to the anode electrode through the second contact hole.
3 . The display device according to claim 1 , further comprising:
a protective film that covers the side surface of the light-emitting element, wherein
the side reflective layer faces the protective film of the light-emitting element.
4 . The display device according to claim 1 , wherein
the light-emitting element comprises a p-type cladding layer, an active layer, and an n-type cladding layer, and
a distance between a bottom reflective layer of the reflective layer that covers the bottom of the cavity and the active layer in a direction perpendicular to the substrate is smaller than a distance between the bottom reflective layer and an upper end of the side reflective layer in the direction perpendicular to the substrate.
5 . The display device according to claim 1 , wherein
the light-emitting element comprises a p-type cladding layer, an active layer, and an n-type cladding layer, and
a distance between a bottom reflective layer of the reflective layer that covers the bottom of the cavity and the active layer in a direction perpendicular to the substrate is equal to or smaller than one-half of a distance between the bottom reflective layer and an upper surface of the light-emitting element in the direction perpendicular to the substrate.
6 . The display device according to claim 1 , wherein
the light-emitting element comprises a p-type cladding layer, an active layer, and an n-type cladding layer, and
a distance between a bottom reflective layer of the reflective layer that covers the bottom of the cavity and an upper end of the side reflective layer in a direction perpendicular to the substrate is larger than a distance between the bottom reflective layer and an upper surface of the light-emitting element in the direction perpendicular to the substrate.
7 . The display device according to claim 1 , further comprising:
an element insulating film provided covering at least the side surface of the light-emitting element;
a cathode electrode provided on the element insulating film and electrically coupled to the light-emitting elements; and
a light-blocking film provided covering the cathode electrode and having an opening formed in a region overlapping the light-emitting element.