Organic light-emitting device
AssigneeSamsung Display Co., Ltd.
InventorMin Woo Lee
Life of this patent
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Abstract
An organic light-emitting device comprises a first electrode, a second electrode disposed on the first electrode, a first organic light-emitting layer disposed between the first electrode and the second electrode, a second organic light-emitting layer disposed between the first organic light-emitting layer and the second electrode, a first charge generation layer (CGL) disposed between the first organic light-emitting layer and the second organic light-emitting layer, a second CGL disposed between the first CGL and the second organic light-emitting layer, and a first buffer layer disposed between the first CGL and the second CGL and including fullerene.
Claims18
An organic light-emitting device, comprising:
- a first electrode;
- a second electrode disposed over the first electrode;
- a first organic light-emitting layer disposed between the first electrode and the second electrode;
- a second organic light-emitting layer disposed between the first organic light-emitting layer and the second electrode;
- a first charge generation layer (CGL) disposed between the first organic light-emitting layer and the second organic light-emitting layer;
- a second CGL disposed between the first CGL and the second organic light-emitting layer;
- a first buffer layer disposed between the first CGL and the second CGL, the first buffer layer comprising a fullerene compound;
- and
- a second buffer layer disposed between the first CGL and the first organic light-emitting layer, wherein the second buffer layer is formed of substantially the same material as the first buffer layer,
- wherein the second buffer layer is separately disposed from the first buffer layer by the first CGL disposed between the first buffer layer and the second buffer layer;
- wherein the second buffer layer is thinner than the first buffer layer.
An organic light-emitting device, comprising:
- a first electrode;
- a second electrode disposed over the first electrode;
- a first organic light-emitting layer disposed between the first electrode and the second electrode;
- a second organic light-emitting layer disposed between the first organic light-emitting layer and the second electrode;
- an n-type charge generation layer (CGL) disposed between the first organic light-emitting layer and the second organic light-emitting layer;
- a buffer layer disposed between the n-type CGL and the second organic light-emitting layer, the buffer layer directly contacting the n-type CGL and comprising a fullerene compound;
- and
- a second buffer layer disposed between the n-type CGL and the first organic light-emitting layer, wherein the second buffer layer is formed of substantially the same material as the buffer layer, wherein the second buffer layer is separately disposed from the buffer layer by the n-type CGL disposed between the buffer layer and the second buffer layer;
- wherein the second buffer layer is thinner than the first buffer layer.
An organic light-emitting device, comprising:
- a first electrode;
- a second electrode disposed over the first electrode;
- a first organic light-emitting layer disposed between the first electrode and the second electrode;
- a second organic light-emitting layer disposed between the first organic light-emitting layer and the second electrode;
- a p-type charge generation layer (CGL) disposed between the first organic light-emitting layer and the second organic light-emitting layer;
- a buffer layer disposed between the p-type CGL and the first organic light-emitting layer, the buffer layer directly contacting the p-type CGL and comprising a fullerene compound;
- and
- a second buffer layer disposed between the p-type CGL and the first organic light-emitting layer, wherein the second buffer layer is formed of substantially the same material as the buffer layer, wherein the second buffer layer is separately disposed from the buffer layer by the p-type CGL disposed between the buffer layer and the second buffer layer;
- wherein the second buffer layer is thinner than the first buffer layer.
Dependencies are inferred from the claim text.