Organic electroluminescent display panel
View Patent ↗An organic EL display panel including: a substrate; pixel electrodes that are arrayed in a matrix above the substrate; first organic functional layers that are on or above the pixel electrodes in one-to-one correspondence with the pixel electrodes, the first organic functional layers spaced apart from one another; a second organic functional layer that continuously covers the first organic functional layers; and a counter electrode that opposes the pixel electrodes and covers the second organic functional layer. In the organic EL display panel, the first organic functional layers each include a hole injection layer, and the second organic functional layer has greater electric resistance than each of the first organic functional layers and has a portion extending into an absence region, the absence region being a space between adjacent ones of the first organic functional layers.
1. An organic EL display panel comprising:
a substrate;
a plurality of pixel electrodes that is arrayed in a matrix above the substrate;
a plurality of first organic functional layers that is disposed above the pixel electrodes, each of the first organic functional layers overlapping each of the pixel electrodes in one-to-one correspondence, and each of the first organic functional layers being spaced apart from one another;
an absence region disposed between adjacent ones of the first organic functional layers;
a second organic functional layer that continuously covers the plurality of the first organic functional layers, and includes a portion that is disposed in the absence region and between the adjacent ones of the first organic functional layers; and
a counter electrode disposed to face towards the pixel electrodes and covers a portion of the second organic functional layer,
wherein
each of the first organic functional layers includes a hole injection layer,
the second organic functional layer has greater electric resistance than each of the first organic functional layers,
each of the first organic functional layers is a laminate including the hole injection layer and a hole transport layer,
the second organic functional layer is a laminate including organic light-emitting layers, an electron transport layer, and an electron injection layer, and
each of the organic light-emitting layers includes a portion extending into the absence region.
2. An organic EL display panel comprising:
a substrate;
a plurality of pixel electrodes that is arrayed in a matrix above the substrate;
a plurality of first organic functional layers that is disposed above the pixel electrodes, each of the first organic functional layers overlapping each of the pixel electrodes in one-to-one correspondence, and each of the first organic functional layers being spaced apart from one another;
a hole injection layer disposed between the pixel electrodes and the first organic functional layers;
an absence region disposed between adjacent ones of the first organic functional layers;
a second organic functional layer that continuously covers the plurality of the first organic functional layers, and includes a portion that is disposed in the absence region and between the adjacent ones of the first organic functional layers; and
a counter electrode disposed to face towards the pixel electrodes and covers a portion of the second organic functional layer,
wherein
each of the first organic functional layers includes a hole transport layer,
the second organic functional layer has greater electric resistance than each of the first organic functional layers,
the second organic functional layer is a laminate including organic light-emitting layers, an electron transport layer, and an electron injection layer, and
at least one of the organic light-emitting layers extends into the absence region.
3. An organic EL display panel comprising:
a substrate;
pixel electrodes that are arrayed in a matrix above the substrate;
first organic functional layers that are on or above the pixel electrodes in one-to-one correspondence with the pixel electrodes, the first organic functional layers spaced apart from one another;
a second organic functional layer that continuously covers the first organic functional layers; and
a counter electrode that opposes the pixel electrodes and covers the second organic functional layer, wherein
each of the first organic functional layers includes a hole injection layer,
the second organic functional layer has greater electric resistance than each of the first organic functional layers and has a portion extending into an absence region, the absence region being a space between adjacent ones of the first organic functional layers,
each of the first organic functional layers is a laminate including the hole injection layer and a hole transport layer,
the second organic functional layer is a laminate including organic light-emitting layers, an electron transport layer, and an electron injection layer, and
each of the organic light-emitting layers extends into the absence region.
4. An organic EL display panel comprising:
a substrate;
pixel electrodes that are arrayed in a matrix above the substrate;
first organic functional layers that are on or above the pixel electrodes in one-to-one correspondence with the pixel electrodes, the first organic functional layers spaced apart from one another;
a second organic functional layer that continuously covers the first organic functional layers;
a counter electrode that opposes the pixel electrodes and covers the second organic functional layer; and
a hole injection layer between the pixel electrodes and the first organic functional layers,
wherein
each of the first organic functional layers includes a hole transport layer,
the second organic functional layer has greater electric resistance than each of the first organic functional layers and has a portion extending into an absence region, the absence region being a space between adjacent ones of the first organic functional layers,
the second organic functional layer is a laminate including organic light-emitting layers, an electron transport layer, and an electron injection layer, and
at least one of the organic light-emitting layers extends into the absence region.