US 2002/0176930 A1 · Method for fabricating an organic light emitting diode

Abstract

A method for fabricating an organic light emitting diode. The method forms an anode, an organic emitting layer and a cathode sequentially on a substrate. When the interface between the anode and the organic emitting layer is forming, the depositional rate of the anode on the substrate is decreasing and the deposition rate of the organic emitting layer on the substrate is increasing. When the interface between the organic emitting layer and the cathode is forming, the deposition rate of the organic emitting layer on the substrate is decreasing, and the deposition rate of the cathode on the substrate is increasing. This method can form a hazy heterojunction between the anode, the organic emitting layer and the cathode, thus forming an organic light emitting diode with a hazy heterojunction.

Claims22

Dependent claims

A method for fabricating an organic light emitting diode, comprising:

providing a substrate;
providing a fixture that is fixed on the substrate and moves forward in a horizontal direction over a plurality of depositional sources, including an anode depositional source, an organic emitting layer depositional source and a cathode depositional source, wherein all the depositional sources are fixed in a position along a moving route;
moving the substrate fixed on the fixture over the anode depositional source to form an anode;
moving the substrate slowly over the organic emitting layer depositional source before the anode depositional source completes the anode to form an organic emitting layer;
moving the substrate slowly over the cathode depositional source before the organic emitting layer depositional source completes the organic emitting layer to form a cathode, wherein a heterojunction between the anode and the organic emitting layer, and a heterojunction between the organic emitting layer and the cathode are blurred.

2 more elements

Dependencies are inferred from the claim text.

Method for fabricating an organic light emitting diode

Life of this patent

Method for fabricating an organic light emitting diode

Life of this patent

Abstract

Claims22