Method of manufacturing an organic light emitting diode
AssigneesSamsung Electronics Co., Ltd., Industry-University Cooperation Foundation Hanyang University
InventorsTae-Whan Kim, Dong-Chul Choo
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Abstract
A manufacturing method of an organic light emitting diode (“OLED”) includes forming an anode on a substrate, forming an inorganic buffer layer on the anode, forming a hole transport layer on the buffer layer, forming a light emission layer on the hole transport layer, forming an electron transport layer on the light emission layer, and forming a cathode on the electron transport layer. The forming an inorganic buffer layer includes thermal evaporation and oxidation.
Claims16
A manufacturing method of an organic light emitting diode, comprising:
- forming an anode on a substrate;
- forming an inorganic buffer layer, the forming the inorganic buffer layer comprising forming a metal layer on the anode by thermal evaporation and subjecting the formed metal layer to heat treatment;
- forming a hole transport layer on the buffer layer;
- forming a light emission layer on the hole transport layer;
- forming an electron transport layer on the light emission layer;
- and
- forming a cathode on the electron transport layer.
An organic light emitting diode comprising:
- a first electrode formed on a substrate;
- an inorganic buffer layer formed through forming a metal layer on the first electrode by thermal evaporation and subjecting the formed metal layer to heat treatment;
- a first transport layer formed on the first electrodes;
- a light emission layer formed on the first transport layers;
- a second transport layer formed on the light emission layer;
- a first injection layer formed on the second transport layer;
- and
- a second electrode formed on the electron injection layer.
An organic light emitting diode comprising:
- a first electrode formed directly on a substrate;
- an inorganic buffer layer formed directly on the first electrode;
- a hole injection layer formed on the inorganic buffer layer such that the inorganic buffer layer is disposed between the hole injection layer and the first electrode;
- a hole transport layer formed on the hole injection layer such that the hole injection layer is disposed between the hole transport layer and the inorganic buffer layer;
- a light emission layer formed directly on the hole transport layer;
- an electron transport layer formed directly on the light emission layer;
- an electron injection layer formed directly on the electron transport layer;
- and
- a second electrode formed directly on the electron injection layer.
Dependencies are inferred from the claim text.