Luminescent composition, electroluminescent sheet using the luminescent composition, and process for producing the electroluminescent sheet

Abstract

The present invention provides a luminescent composition capable of providing an electroluminescent sheet with a high productivity at low costs in an efficient manner, an electroluminescent sheet obtained from the luminescent composition which can be mass-produced, and a process for producing the electroluminescent sheet. The present invention relates to an adhesive luminescent composition produced by kneading and dispersing an electroluminescent substance in a resin having a glass transition temperature of from −70 to 5° C.; an electroluminescent sheet including at least a first substrate, a first electrode, an electroluminescent layer, a second electrode and a second substrate which are successively laminated in this order, wherein the first substrate and the first electrode are transparent, and the electroluminescent layer is formed from the luminescent composition; and a process for producing the electroluminescent sheet, including the steps of preparing a first laminate and a second laminate by the following step (1) or (2); and bonding a side of the electroluminescent layer of the first laminate to a side of the second electrode of the second laminate, or bonding a side of the first electrode of the first laminate to a side of the electroluminescent layer of the second laminate: Step (1): successively forming at least the first electrode and the electroluminescent layer on the first substrate to prepare the first laminate, and separately forming at least the second electrode on the second substrate to prepare the second laminate; or Step (2): forming at least the first electrode on the first substrate to prepare the first laminate, and separately successively forming at least the second electrode and the electroluminescent layer on the second substrate to prepare the second laminate.

Dependencies are inferred from the claim text.