Light-emitting device
View Patent ↗A light-emission device includes a substrate and a G light-emission layer; an R light-emission layer, a B light-emission layer, and a wiring layer made of metal that are each arranged above the substrate. Each of the G light-emission layer, the R light-emission layer, and the B light-emission layer contains light-emission material. An amount of heat that the B light-emission layer generates upon light emission is greater than an amount of heat that the G light-emission layer generates upon light emission. Further, the B light-emission layer directly faces the wiring layer at a facing edge portion.
1. A light-emission device comprising:
a substrate;
a first light-emission unit above the substrate, the first light-emission unit including a first light-emission layer that contains light-emission material;
a second light-emission unit above the substrate, the second light-emission unit including a second light-emission layer that contains light-emission material and that is adjacent to the first light-emission layer;
a third light-emission unit above the substrate, the third light-emission unit including a third light-emission layer that contains light-emission material and that is adjacent to the first light-emission layer, wherein an amount of heat that the third light-emission layer generates upon light emission is greater than each of an amount of heat that the first light-emission layer generates upon light emission and an amount of heat that the second light-emission layer generates upon light emission; and
a wiring layer above the substrate and adjacent to the third light-emission layer, the wiring layer being made of metal and comprising a line structure or a matrix structure, wherein
the third light-emission layer has a longer facing edge portion than each of the first light-emission layer and the second light-emission layer, a facing edge portion of a given light-emission layer being an edge portion directly facing the wiring layer, or
the third light-emission layer has a larger facing surface portion than each of the first light-emission layer and the second light-emission layer, a facing surface portion of a given light-emission layer being a surface portion directly facing the wiring layer.
2. The light-emission device of claim 1 , wherein
the amount of heat that the second light-emission layer generates upon light emission is greater than the amount of heat that the first light-emission layer generates upon light emission, and
the second light-emission layer has a longer facing edge portion than the first light-emission layer, or
the second light-emission layer has a larger facing surface portion than the first light-emission layer.
3. The light-emission device of claim 1 , wherein
the third light-emission layer has a greater area than each of the first light-emission layer and the second light-emission layer.
4. The light-emission device of claim 3 , wherein
the second light-emission layer has a greater area than the first light-emission layer.
5. The light-emission device of claim 1 , wherein
the third light-emission layer is provided in a pair, and
the first light-emission layer and the second light-emission layer are disposed between the pair.
6. The light-emission device of claim 1 , wherein
the wiring layer comprises the line structure and includes a plurality of line portions, and
the third light-emission layer, the first light-emission layer, and the second light-emission layer are disposed, in the stated order, between each pair of the line portions.
7. The light-emission device of claim 1 , wherein
the substrate includes a drive transistor electrically connected to the first light-emission layer, the second light-emission layer, and the third light-emission layer, and
a portion of the wiring layer exists above the drive transistor.
8. The light-emission device of claim 1 , wherein
the third light-emission layer has lower light-emission efficiency than each of the first light-emission layer and the second light-emission layer.
9. The light-emission device of claim 8 , wherein
the first light-emission layer and the second light-emission layer each contain organic light-emission material of a phosphorescent type as the light-emission material, and
the third light-emission layer contains organic light-emission material of a fluorescent type as the light-emission material.
10. The light-emission device of claim 1 , wherein
the first light-emission layer, the second light-emission layer, and the third light-emission layer each include a pixel electrode made of metal,
a common electrode made of metal is disposed above the first light-emission layer, the second light-emission layer, and the third light-emission layer, the common electrode being continuous between the first light-emission layer, the second light-emission layer, and the third light-emission layer, and
the wiring layer, being at a distance from each of the pixel electrodes, being connected with the common electrode, and being electrically connected with the first light-emission layer, the second light-emission layer, and the third light-emission layer, functions as an auxiliary electrode.
11. A light-emission device comprising:
a substrate;
a first light-emission unit above the substrate, the first light-emission unit including a first light-emission layer that contains light-emission material;
a second light-emission unit above the substrate, the second light-emission unit including a second light-emission layer that contains light-emission material and that is adjacent to the first light-emission layer, wherein an amount of heat that the second light-emission layer generates upon light emission is greater than an amount of heat that the first light-emission layer generates upon light emission; and
a wiring layer above the substrate and adjacent to the second light-emission layer, the wiring layer made of metal and comprising a line structure or a matrix structure, wherein
the second light-emission layer has a longer facing edge portion than the first light-emission layer, a facing edge portion of a given light-emission layer being an edge portion directly facing the wiring layer, or
the second light-emission layer has a larger facing surface portion than the first light-emission layer, a facing surface portion of a given light-emission layer being a surface portion directly facing the wiring layer.
12. A light-emission device comprising:
a substrate;
a phosphorescent light-emission unit above the substrate, the phosphorescent light-emission unit including a phosphorescent light-emission layer that contains light-emission material of a phosphorescent type;
a fluorescent light-emission unit above the substrate, the fluorescent light-emission unit including a fluorescent light-emission layer that contains light-emission material of a fluorescent type and that is adjacent to the phosphorescent light-emission layer, wherein an amount of heat that the fluorescent light-emission layer generates upon light emission is greater than an amount of heat that the phosphorescent light-emission layer generates upon light emission; and
a wiring layer above the substrate and adjacent to the fluorescent light-emission layer, the wiring layer made of metal and comprising a line structure or a matrix structure, wherein
the fluorescent light-emission layer has a longer facing edge portion than the phosphorescent light-emission layer, a facing edge portion of a given light-emission layer being an edge portion directly facing the wiring layer,
or the fluorescent light-emission layer has a larger facing surface portion than the phosphorescent light-emission layer, a facing surface portion of a given light-emission layer being a surface portion directly facing the wiring layer.