Light-emitting element, light-emitting device, display device, and electronic apparatus

US8952369B2 · kind B2 · utility

Assignee

• SEIKO EPSON CORPORATION · JP

Inventor

• Takuya SONOYAMA · Fujimi, JP

Key dates

• Filing date: Jun 19, 2013
• Grant date: Feb 10, 2015
• Expiry date: Jul 24, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/103

Abstract

A light-emitting element includes an anode, a cathode, a luminescent layer disposed between the anode and the cathode and containing a host material, a first luminescence-assisting layer disposed in contact with the luminescent layer between the anode and the luminescent layer and containing a first luminescence-assisting material having characteristics the same as or similar to the host material, and a second luminescence-assisting layer disposed in contact with the luminescent layer between the cathode and the luminescent layer and containing a second luminescence-assisting material having characteristics the same as or similar to the host material. The luminescent layer and the first luminescence-assisting layer each contain a high-molecular-weight material.