Display device, light-emitting device, and electronic apparatus
Provided is a display device that includes a plurality of first electrodes; a second electrode facing the plurality of first electrodes and an organic light-emitting layer provided between the plurality of first electrodes and the second electrode. Each of the first electrode includes a metal layer having a main surface facing the organic light-emitting layer and a transparent electrode covering a main surface of the metal layer and a side surface of the metal layer and containing a transparent conductive oxide. The metal layer includes a first metal layer having a hydrogen absorption capacity and a second metal layer provided on the first metal layer and facing the organic light-emitting layer with the transparent electrode interposed therebetween. A peripheral edge of the first metal layer is separated from the transparent electrode.
1 . A display device, comprising:
a plurality of first electrodes;
a second electrode that faces the plurality of first electrodes; and
an organic light-emitting layer between the plurality of first electrodes and the second electrode, wherein
each electrode of the plurality of first electrodes includes:
a transparent that includes a transparent conductive oxide;
a first metal layer having a hydrogen absorption capacity; and
a second metal layer on the first metal layer,
the second metal layer includes a plurality of surfaces,
a first surface of the plurality of surfaces faces the organic light-emitting layer,
the transparent electrode covers the first surface and side surfaces of the plurality of surfaces of the second metal layer in entirety,
a portion of a second surface of the plurality of surfaces of the second metal layer is in contact with the first metal layer,
the transparent electrode is between the second metal layer and the organic light-emitting layer, and
a peripheral edge of the first metal layer is separated from the transparent electrode.
2 . The display device according to claim 1 , wherein the first metal layer contains at least one of titanium (Ti) or tantalum (Ta).
3 . The display device according to claim 1 , wherein the peripheral edge of the first metal layer is on an inner side of a peripheral edge of the second metal layer.
4 . The display device according to claim 3 , wherein an outer side of a side surface of the first metal layer includes a gap.
5 . The display device according to claim 4 , wherein the gap includes one of an insulating layer or a metal layer.
6 . The display device according to claim 4 , wherein the gap is hollow.
7 . The display device according to claim 1 , further comprising a sidewall between the side surfaces of the second metal layer and the transparent electrode.
8 . The display device according to claim 7 , wherein the sidewall has lower hydrogen absorption capacity than the first metal layer.
9 . The display device according to claim 7 , wherein the sidewall does not have hydrogen absorption capacity.
10 . The display device according to claim 7 , wherein the sidewall contains at least one of metals or insulating materials.
11 . The display device according to claim 1 , further comprising
an insulating layer having a plurality of openings,
the plurality of first electrodes is exposed from the plurality of openings, and
the peripheral edge of the first metal layer is on an outer side of a peripheral edge of an opening of the plurality of openings.
12 . The display device according to claim 1 , wherein the second metal layer contains at least one of aluminum (Al) or silver (Ag).
13 . The display device according to claim 1 , wherein
the transparent conductive oxide contains at least one of a transparent conductive oxide containing indium, a transparent conductive oxide containing tin, or a transparent conductive oxide containing zinc.
14 . A light-emitting device, comprising:
a first electrode;
a second electrode that faces the first electrode; and
an organic light-emitting layer between the first electrode and the second electrode, wherein
the first electrode includes:
a transparent electrode that includes a transparent conductive oxide; and
a first metal layer having a hydrogen absorption capacity; and
a second metal layer on the first metal layer,
the second metal layer includes a plurality of surfaces,
a first surface of the plurality of surfaces faces the organic light-emitting layer,
the transparent electrode covers the first surface and side surfaces of the plurality of surfaces of the second metal layer in entirety,
a portion of a second surface of the plurality of surfaces of the second metal layer is in contact with the first metal layer,
the transparent electrode is between the second metal layer and the organic light-emitting layer, and
a peripheral edge of the first metal layer is separated from the transparent electrode.
15 . An electronic apparatus, comprising:
a display device that includes:
a plurality of first electrodes;
a second electrode that faces the plurality of first electrodes; and
an organic light-emitting layer between the plurality of first electrodes and the second electrode, wherein
each electrode of the plurality of first electrodes includes:
a transparent electrode that includes a transparent conductive oxide;
a first metal layer having a hydrogen absorption capacity; and
a second metal layer on the first metal layer,
the second metal layer includes a plurality of surfaces,
a first surface of the plurality of surfaces faces the organic light-emitting layer
the transparent electrode covers the first surface and side surfaces of the plurality of surfaces of the second metal layer in entirety,
a portion of a second surface of the plurality of surfaces of the second metal layer is in contact with the first metal layer,
the transparent electrode is between the second metal layer and the organic light-emitting layer, and
a peripheral edge of the first metal layer is separated from the transparent electrode.