Patent ID: 8586977

Claim:
A method of manufacturing an organic EL display unit comprising: forming a lower electrode respectively for a red organic EL device, a green organic EL device, and a blue organic EL device on a substrate; forming a hole injection layer respectively for the red organic EL device, the green organic EL device, and the blue organic EL device on the lower electrode by coating method; forming a hole transport layer made of a polymer material respectively for the red organic EL device and the green organic EL device on the hole injection layer by coating method; forming a red light emitting layer made of a polymer material on the hole transport layer for the red organic EL device by coating method; forming a green light emitting layer made of a polymer material on the hole transport layer for the green organic EL device by coating method; forming a hole transport layer made of a low molecular material on the hole injection layer of the blue organic EL device by coating method; forming a blue light emitting layer made of a low molecular material on the whole area of the red light emitting layer, the green light emitting layer, and the hole transport layer for the blue organic EL device by evaporation method; and sequentially forming an electron transport layer, an electron injection layer, and an upper electrode on the whole area of the blue light emitting layer; and wherein the hole transport layer of the blue organic EL device is made of an organic material expressed by General formula 1 shown in Chemical formula 1: where A1 to A3 in the General formula 1 respectively and independently represent a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group.