Organic EL display and method of manufacturing the same

摘要

An organic EL display includes: lower electrodes arranged on a substrate so as to correspond to red, green and blue organic EL elements, respectively; hole injection/transport layers arranged on the lower electrodes so as to correspond to the red, green and blue organic EL elements, respectively, the hole injection/transport layers having one or both of hole injection and hole transport properties; red and green organic light-emitting layers arranged on the hole injection/transport layers for the red and green organic EL elements, respectively, and including a low-molecular material; a blue organic light-emitting layer arranged on whole surfaces of the red and green organic light-emitting layers and the hole injection/transport layer for the blue organic EL element; and an electron injection/transport layer and an upper electrode arranged on a whole surface of the blue light-emitting layer, the electron injection/transport layer having one or both of electron injection properties and electron transport properties.

主权项

1. An organic EL display comprising:
lower electrodes arranged on a substrate so as to correspond to a red organic EL element, a green organic EL element and a blue organic EL element, respectively; hole injection/transport layers arranged on the lower electrodes so as to correspond to the red organic EL element, the green organic EL element and the blue organic EL element, respectively, the hole injection/transport layers having hole injection properties for hole injection, or hole transport properties for hole mobility, or both; a red organic light-emitting layer arranged on the hole injection/transport layer for the red organic EL element, and including a low-molecular material; a green organic light-emitting layer arranged on the hole injection/transport layer for the green organic EL element, and including a low-molecular material; a blue organic light-emitting layer arranged on whole surfaces of the red organic light-emitting layer, the green organic light-emitting layer and the hole injection/transport layer for the blue organic EL element; and an electron injection/transport layer and an upper electrode arranged on a whole surface of the blue light-emitting layer, the electron injection/transport layer having one or both of electron injection properties and electron transport properties, wherein,
the hole injection/transport layers of the red organic EL element and the green organic EL element comprise a high-molecular material, andthe hole injection/transport layers of the blue organic EL element includes (i) a layer having hole injection properties and (ii) a layer having hole transport properties which comprises a low-molecular material.