Organic electroluminescence element, organic electroluminescence display device, and method for producing organic electroluminescence element

US10381588B2 · kind B2 · utility

Assignee

• SHARP KABUSHIKI KAISHA · JP

Inventors

• Manabu Niboshi · Osaka, JP
• Hideki Uchida · Nara, JP
• Shinji Nakajima · Yokohama, JP
• Yoshiyuki Isomura · Sakai, JP
• Eiji Koike · Sakai, JP
• Yuto Tsukamoto · Sakai, JP
• Asae Ito · Sakai, JP

Key dates

• Filing date: Nov 7, 2016
• Grant date: Aug 13, 2019
• Expiry date: Nov 7, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/321

Abstract

To provide an organic EL element having good injection properties and transport properties of a carrier. Included are: an InGaZnO layer with a composition rich in In2O3 as a transparent electrode contacting a negative electrode; an InGaZnO layer with a stoichiometric ratio of In:Ga:Zn:O=1:1:1:4 as an electron injecting layer; and an InGaZnO layer with a composition rich in Ga2O3 as an electron transport layer contacting a light emitting layer.