Organic light emitting diode and method of fabricating the same
AssigneeSamsung Mobile Display Co., Ltd.
InventorNam-Choul Yang
Life of this patent
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Abstract
An organic light emitting diode (OLED) and a method of fabricating the same, in which an intermediate layer is formed between a first hole transport layer (HTL) and a second hole transport layer to facilitate supply of current to an emission layer (EML), thereby increasing the luminance and life span of the OLED. The OLED includes a first electrode, a hole injection layer (HIL) disposed on the first electrode, a first hole transport layer disposed on the hole injection layer, an intermediate layer disposed on the first hole transport layer, a second hole transport layer disposed on the intermediate layer, an emission layer disposed on the second hole transport layer, and a second electrode disposed on the emission layer.
Claims18
An organic light emitting diode (OLED) comprising:
- a first electrode;
- a hole injection layer on the first electrode;
- a first hole transport layer on the hole injection layer;
- an intermediate layer on the first hole transport layer;
- a second hole transport layer on the intermediate layer;
- an emission layer on the second hole transport layer;
- and
- a second electrode on the emission layer.
An organic light emitting diode (OLED) comprising:
- a first electrode;
- a first hole transport layer;
- a hole injection layer between the first electrode and the first hole transport layer;
- a second hole transport layer;
- an intermediate layer between the first hole transport layer and the second hole transport layer;
- a second electrode;
- and
- an emission layer between the second hole transport layer and the second electrode.
A method of fabricating an organic light emitting diode (OLED), the method comprising:
- forming a first electrode;
- forming a hole injection layer on the first electrode;
- forming a first hole transport layer on the hole injection layer;
- forming an intermediate layer on the first hole transport layer;
- forming a second hole transport layer on the intermediate layer;
- forming an emission layer on the second hole transport layer;
- and
- forming a second electrode on the emission layer.
Dependencies are inferred from the claim text.