Sumitomo Chemical Company, Limited

Cambridge Display Technology Limited

Shohgo Yamauchi

Hideyuki Higashimura

Richard J Wilson

Masanobu Tanaka

Masato Shakutsui

Kenta Tanaka

Tadashi Goda

Sarah M Tyler

Thomas J Kugler

A layered structure including a first electrode and a second electrode, a light-emitting layer or a charge separation layer between the first electrode and the second electrode, and a layer containing a conjugated polymer compound between the light-emitting layer or the charge separation layer and the first electrode, wherein the conjugated polymer compound contains a repeating unit selected from the group consisting of a repeating unit of formula (1).

Layered structure comprising a layer containing a conjugated polymer compound

A polymer light emitting element having a large light releasing surface, a high light emitting efficiency and a long life, a polymer light emitting display device and planar light source, as well as a method for manufacturing the polymer light emitting element are provided. The polymer light emitting element is characterized by comprising a first electrode, a second electrode and a light emitting layer provided between the first electrode and the second electrode and containing a polymer compound, wherein the second electrode is composed of three layers, a first layer, a second layer and a third layer arranged in this order viewed from the light emitting layer, and at least one of materials contained in the second layer has a reducing action on at least one of materials contained in the first layer, and the visible light transmittance of the third layer is 40% or more.

Polymer light emitting element, method for manufacturing the same and polymer light emitting display device

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Tsukuba, Japan

Shohgo Yamauchi