Light-emitting panel, manufacturing method of light-emitting panel, and film forming system
View Patent ↗A light-emitting panel includes: a substrate; and a light-emitting functional multilayer formed on the substrate, wherein the light-emitting functional multilayer including a first functional layer and a second functional layer, a thickness of part of the first functional layer positioned in a first light-emitting region is smaller than a thickness of part of the first functional layer positioned in a second light-emitting region, a thickness of part of the second functional layer positioned in the first light-emitting region is greater than a thickness of part of the second functional layer positioned in the second light-emitting region, and when the light-emitting functional multilayer is viewed in a layering direction thereof, the first light-emitting region and the second light-emitting region are adjacent or distant from each other in a direction perpendicular to the layering direction, and each include a plurality of pixels that are each composed of a plurality of adjacent sub-pixels.
1. A light-emitting panel comprising:
a substrate; and
a light-emitting functional multilayer formed on the substrate, wherein
the light-emitting functional multilayer including a first functional layer and a second functional layer,
a thickness of part of the first functional layer positioned in a first light-emitting region is smaller than a thickness of part of the first functional layer positioned in a second light-emitting region,
a thickness of part of the second functional layer positioned in the first light-emitting region is greater than a thickness of part of the second functional layer positioned in the second light-emitting region, and
when the light-emitting functional multilayer is viewed in a layering direction thereof, the first light-emitting region and the second light-emitting region are adjacent or distant from each other in a direction perpendicular to the layering direction, and each include a plurality of pixels that are each composed of a plurality of adjacent sub-pixels.
2. The light-emitting panel of claim 1 , wherein
the respective parts of the first functional layer positioned in the first light-emitting region and the second light-emitting region are formed in the same process, and
the respective parts of the second functional layer positioned in the first light-emitting region and the second light-emitting region are formed in the same process.
3. The light-emitting panel of claim 1 , wherein
a total optical thickness of the part of the first functional layer and the part of the second functional layer positioned in the first light-emitting region is equal to a total optical thickness of the part of the first functional layer and the part of the second functional layer positioned in the second light-emitting region.
4. The light-emitting panel of claim 1 , wherein
the first functional layer and the second functional layer are each formed by a vacuum film forming method.
5. The light-emitting panel of claim 1 , wherein
the first functional layer and the second functional layer are adjacent each other in the layering direction.
6. The light-emitting panel of claim 5 , wherein
the light-emitting functional multilayer further includes an anode and a cathode facing each other with the first functional layer and the second functional layer therebetween,
the first functional layer is a transparent conductive layer layered on the anode, and
the second functional layer is a charge injection layer layered on the transparent conductive layer.
7. The light-emitting panel of claim 1 , wherein
the first functional layer is formed from ITO or IZO, and
the second functional layer is formed from oxidized metal.
8. The light-emitting panel of claim 1 , wherein
the light-emitting functional multilayer further includes a third functional layer, and
a thickness of part of the third functional layer positioned in the first light-emitting region is greater than a thickness of part of the third functional layer positioned in the second light-emitting region.
9. The light-emitting panel of claim 8 , wherein
the third functional layer is an anode,
the light-emitting functional multilayer further includes a cathode facing the anode with the first functional layer and the second functional layer therebetween,
the first functional layer is a transparent conductive layer layered on the anode, and
the second functional layer is a charge injection layer layered on the transparent conductive layer.
10. The light-emitting panel of claim 8 , wherein
the third functional layer is formed from aluminum, silver, alloy of aluminum, or alloy of silver.
11. The light-emitting panel of claim 8 , wherein
the third functional layer is a cathode,
the light-emitting functional multilayer further includes an anode facing the cathode with the first functional layer and the second functional layer therebetween,
the first functional layer is a transparent conductive layer layered on the anode, and
the second functional layer is a charge injection layer layered on the transparent conductive layer.
12. A film forming system for use in manufacturing the light-emitting panel of claim 1 , the film forming system comprising a first magnetron sputtering device for forming the first functional layer and a second magnetron sputtering device for forming the second functional layer, wherein
the first magnetron sputtering device comprises:
a first target member;
a first target member holder that holds the first target member placed on a first surface thereof; and
a plurality of first magnetrons placed on a second surface of the first target member holder that is opposite the first surface of the first target member holder, the second magnetron sputtering device comprises:
a second target member;
a second target member holder that holds the second target member placed on a first surface thereof; and
a plurality of second magnetrons placed on a second surface of the second target member holder that is opposite the first surface of the second target member holder,
the substrate is placed facing the first target member in the first magnetron sputtering device, and then the substrate is placed facing the second target member in the second magnetron sputtering device, and
respective positions of the first magnetrons placed facing the substrate differ from respective positions of the second magnetrons placed facing the substrate.
13. A film forming system for use in manufacturing the light-emitting panel of claim 1 , the film forming system comprising a first evaporation device for forming the first functional layer and a second evaporation device for forming the second functional layer, wherein
the first evaporation device comprises a plurality of first evaporation sources,
the second evaporation device comprises a plurality of second evaporation sources,
the substrate is placed facing the first evaporation sources in the first evaporation device, and then the substrate is placed facing the second evaporation sources in the second evaporation, and
respective positions of the first evaporation sources placed facing the substrate differ from respective positions of the second evaporation sources placed facing the substrate.