Samsung Display Co., Ltd.

Toshiyuki Matsuura

Hiroaki Itoi

Naoya Sakamoto

Nobutaka Akashi

Mitsuhiro Kashiwabara

An organic electroluminescent device of which emission life may be improved. The organic electroluminescent device includes an anode, an emission layer, and an anode-side hole transport layer provided between the anode and the emission layer and including an anode-side hole transport material. An electron accepting material is doped in the anode-side hole transport layer. An intermediate hole transport material layer is provided between the anode-side hole transport layer and the emission layer and includes an intermediate hole transport material, and an emission layer-side hole transport layer is provided between the intermediate hole transport material layer and the emission layer and adjacent to the emission layer. The emission layer-side hole transport layer includes an emission layer-side hole transport material represented by the following Formula 1 

Organic electroluminescent device

An organic electroluminescent device of which emission life may be improved. The organic electroluminescent device includes an anode, an emission layer, and an anode-side hole transport layer provided between the anode and the emission layer and including an anode-side hole transport material. An electron accepting material is doped in the anode-side hole transport layer. An intermediate hole transport material layer is provided between the anode-side hole transport layer and the emission layer and includes an intermediate hole transport material, and an emission layer-side hole transport layer is provided between the intermediate hole transport material layer and the emission layer and adjacent to the emission layer. The emission layer-side hole transport layer includes an emission layer-side hole transport material represented by the following Formula 1. 

A display device includes a substrate. A pixel electrode is disposed on the substrate. An auxiliary electrode is disposed on the substrate. A first auxiliary line is connected to the auxiliary electrode. A second auxiliary line is spaced apart from the auxiliary electrode. A top electrode contacts at least one of the auxiliary electrode, the first auxiliary line, or the second auxiliary line. An organic light emitting layer is disposed between the top electrode and the pixel electrode, and is disposed between the top electrode and the first and second auxiliary lines.

Display device and method for manufacturing same

Display apparatus, including a substrate; a pixel electrode on the substrate and corresponding to a pixel; an auxiliary line on the substrate and insulated from the pixel electrode; an insulation layer on the pixel electrode and the auxiliary line, the insulation layer covering at least a portion of the pixel electrode and at least a portion of the auxiliary line; an organic light emitting layer on the pixel electrode, the auxiliary line, and the insulation layer; a first electrode on the organic light emitting layer and overlapping at least a portion of the auxiliary line; an opening in each of the organic light emitting layer and the first electrode to correspond to the auxiliary line; and a second electrode on the first electrode and an exposed portion of the auxiliary line, the second electrode electrically connecting the auxiliary line to the first electrode, the exposed portion of the auxiliary line being exposed by the opening.

Display apparatus having auxiliary line and method for manufacturing the same

An organic electroluminescence (EL) display device, includes a lower electrode on a substrate; an assistant electrode on the substrate and spaced apart from the lower electrode; an organic material layer on the lower electrode and the assistant electrode, the organic material layer including a light-emitting layer on the lower electrode; an upper electrode on the organic material layer; and a carrier generation material layer between the assistant electrode and the upper electrode, the organic material layer being between one or more of the carrier generation material layer and the assistant electrode, or the carrier generation material layer and the upper electrode.

Organic electroluminescence display device

Provided is a display device, including a pixel electrode in each of a plurality of pixels; an auxiliary wiring part including a first auxiliary wiring having a first edge portion, and a second auxiliary wiring having a second edge portion spaced apart from and facing the first edge portion; an insulating layer on the pixel electrode and the auxiliary wiring part, and in which a first opening and a second opening are defined, the first opening overlapping the pixel electrode, and the second opening overlapping the first edge portion and the second edge portion; an organic light-emitting layer on the insulating layer and contacting the pixel electrode through the first opening; and an upper electrode on the organic light-emitting layer and having a connection portion electrically connected with the auxiliary wiring part through the second opening.

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Yokohama, Japan

Toshiyuki Matsuura