Transfer film and process for producing organic electroluminescent device using the same
AssigneeSharp Kabushiki Kaisha
InventorsTakashi Ogura, Shinji Yamana, Tomonori Akai
Life of this patent
Estimating the term…
Abstract
A transfer film comprising a base film, a transfer layer, and a transfer auxiliary layer formed between the base film and the transfer layer so as to be in contact with at least the transfer layer, this transfer auxiliary layer having a melting point or a glass transition temperature lower than that of the transfer layer, wherein at least a portion of the transfer layer can be thermally transferred onto a substrate.
Claims15
A transfer film comprising a base film, a transfer layer, and a transfer auxiliary layer formed between the base film and the transfer layer so as to be in contact with at least the transfer layer, wherein this transfer auxiliary layer comprises a compound selected from the group consisting of diphenylamine, triphenylene, para-terphenyl, stearic acid and behenic acid and has a melting point or a glass transition temperature lower than that of the transfer layer, wherein at least a portion of the transfer layer can be thermally transferred onto a substrate and wherein the transfer layer has an electroluminescent layer containing at least an organic light-emitting material or the transfer layer has a transparent conductive film layer that transmits light.
A process for producing an organic electroluminescent device comprising the step of attaching to a substrate a transfer film comprising a base film, a transfer layer to be a constituent layer of the organic electroluminescent device and a transfer auxiliary layer formed between the base film and the transfer layer so as to be in contact with at least the transfer layer, wherein this transfer auxiliary layer comprises a compound selected from the group consisting of diphenylamine, triphenylene, para-terphenyl, stearic acid and behenic acid and has melting point or a glass transition temperature lower than that of the transfer layer, in such a manner that the transfer layer is in contact with a face of the substrate on which the transfer layer is to be transferred;
- and the step of heating the transfer auxiliary layer from the base film side for transferring at least a portion of the transfer layer onto the substrate, to thereby form the constituent layer of the organic electroluminescent device.
Dependencies are inferred from the claim text.