Organic electroluminescent element, production method of the same, display device, and lighting device
View Patent ↗An organic electroluminescent element includes a laminated body incorporating an anode substrate, an anode, at least one non-light emitting organic layer A exhibiting positive hole transportability, at least one light emitting organic layer B, at least one non-light emitting organic layer C exhibiting electron transportability, a cathode, and a cathode substrate in the sequence set forth. At least 80% by weight of the organic layer A and the organic layer C in the laminated body is formed via a wet process, and the laminated body is made with an adhesion process between the organic layer A and the organic layer B, or between the organic layer B and the organic layer C.
1. A method of producing an organic electroluminescent element comprising a laminated body incorporating an anode substrate, an anode, at least one non-light emitting organic layer A exhibiting positive hole transportability, at least one light emitting organic layer B, at least one non-light emitting organic layer C exhibiting electron transportability, a cathode, and a cathode substrate in the sequence set forth, the method comprising:
laminating, on the anode substrate, the anode and the organic layer A in that order to form a partially laminated body;
laminating, on the cathode substrate, the cathode and the organic layer C in that order to form a partially laminated body;
forming the organic layer B on a temporary support;
superposing the organic layer B side on the temporary support with the organic layer side of the partially laminated body on the anode substrate or the organic layer side of the partially laminated body on the cathode substrate, followed by subjecting to a heat treatment or a pressure treatment so as to transfer the organic layer B onto the organic layer side of the partially laminated body on the anode substrate or onto the organic layer side of the partially laminated body on the cathode substrate;
superposing the organic layer B side of the substrate to which the organic layer B has been transferred with the organic layer side of the partially laminated body on another substrate to which the organic layer B has not been transferred, followed by subjecting to a heat treatment or a pressure treatment so as to form the laminated body; and
sealing an entire periphery of the side of the laminated body with an adhesive.
2. The method of producing the organic electroluminescent element of claim 1 , further comprising:
forming three-color light emitting pixels of blue, green, and red, via a patterning method on at least one organic layer B formed on the temporary support.
3. An organic electroluminescent element formed by the method of claim 1 .