Patent ID: 7897421
Filing Date: 2011-03-01
Classification: C09K,H01L,H05B

Abstract:
1. A method of producing an organic electro luminescent element comprising: (i) forming a transparent electrode as an anode on a transparent substrate; (ii) forming a light emission layer on the transparent substrate having thereon the anode; and (iii) forming a cathode on the substrate having thereon the anode and the light emission layer; wherein the light emission layer is formed by a method comprising: (iv) arranging at least two vaporization crucibles E each evaporating a different light emission dopant from each other and at least one vaporization crucible I evaporating a host material and an intermediate layer forming material; and (v) moving the substrate having thereon the anode over the vaporization crucibles E and I to form a light emission layer; wherein at least two vaporization crucibles E each evaporate a different phosphorescent dopant from each other.