ORGANIC ELECTROLUMINESCENT DEVICE AND DISPLAY APPARATUS USING THE SAME

Abstract

An organic electroluminescent device having a pair of electrodes and a luminescent layer including an organic compound interposed between the pair of electrodes. The luminescent layer contains at least one element selected from the group consisting of argon, krypton, xenon and radon.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a sectional view illustrating an embodiment of an organic luminescent device according to the present invention.

FIG. 2 is a sectional view illustrating another embodiment of the organic luminescent device according to the present invention.

FIG. 3 is a sectional view illustrating another embodiment of the organic luminescent device according to the present invention.

FIG. 4 is a sectional view illustrating another embodiment of the organic luminescent device according to the present invention.

FIG. 5 is a sectional view illustrating another embodiment of the organic luminescent device according to the present invention.

Claims

1. An organic electroluminescent device comprising a pair of electrodes and a luminescent layer comprising an organic compound interposed between the pair of electrodes, wherein the luminescent layer contains at least one element selected from the group consisting of argon, krypton, xenon and radon.

2. The organic electroluminescent device according to claim 1, wherein the element has a concentration distribution in a depth direction of the luminescent layer.

3. The organic electroluminescent device according to claim 1, wherein the element is contained in an amount of 0.01 atom % or more and of 5 atom % or less in the luminescent layer.

4. The organic electroluminescent device according to claim 1, wherein either one of an upper layer and a lower layer by which the luminescent layer is sandwiched from both sides contain the element.

5. The organic electroluminescent device according to claim 1, wherein the pair of electrodes further contains at least one element selected from the group consisting of argon, krypton, xenon and radon.

6. A display apparatus comprising the organic electroluminescent device according to claim 1 in a display portion.

7. The display apparatus according to claim 6, further comprising a holding unit for holding the display portion in an airtight state, wherein the holding unit has an airtight space containing at least one element selected from the group consisting of argon, krypton, xenon and radon.