Patent ID: 7719183

Claim:
A manufacturing method of an organic electroluminescent device, the method comprising: forming a first electrode on a substrate; forming an organic luminescence media layer over the first electrode which emits light by applying a voltage wherein the organic luminescence media layer includes at least a hole transport layer and an organic luminous layer; and forming a second electrode on the organic luminescence media layer, wherein the method further comprising: forming the hole transport layer by applying a polymeric hole transport material; and further forming the organic luminous layer on the hole transport layer by applying an ink including 0.3% by weight-3% by weight of a low molecular organic luminous material having a molecular weight less than or equal to 5000 Daltons, wherein the polymeric hole transport material is poly aniline derivative, poly thiophenes, polyvinyl carbazoles, poly(3,4-ethylenedioxy thiophene) or mixture with poly(3,4-ethylenedioxy thiophene) and polystyrene sulfonate, wherein a surface of the first electrode which is not coated by the hole transport layer is coated by the organic luminous layer.