Organic electroluminescent element, method for producing organic electroluminescent element, display, and lighting device

Patent metadata

Field	Value
Publication number	US-10483471-B2
Application number	US-201715400279-A
Country	US
Kind code	B2
Filing date	Jan 6, 2017
Priority date	Jan 6, 2016
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

Provided are an organic electroluminescent (EL) element having high luminescent efficiency, a small aging change in luminescent intensity even after the organic EL element is stored at a high temperature together with a long luminescent lifetime at a high temperature, and a method for producing the organic EL element. Further, a display and a lighting device including the organic EL element are also provided. The organic EL element contains an organic layer provided between at least a pair of a cathode and an anode. The organic layer is formed of at least one layer including a luminescent layer, and at least one layer forming the organic layer contains at least one of the compounds represented by the general formulae (A1) to (A5).

First claim

What is claimed is:

1. An organic electroluminescent element including an organic layer provided between at least a pair of a cathode and an anode, wherein
the organic layer is formed of at least one layer including a luminescent layer, and
at least one layer forming the organic layer contains at least one selected from compounds represented by general formulae (A2) and (A5):

wherein in the general formula (A2), X represents an oxygen atom or a sulfur atom;

wherein in the general formula (A5), X 1 represents an oxygen atom or a sulfur atom; Z 2 , Z 3 , Z 5 to Z 8 independently represent ═N— or ═C(R 1 )— respectively; R 1 represents a hydrogen atom or a substituent; Z 4 is ═N—, Z 1 represents ═N— or ═C(R 2 )—, and R 2 represents a nitrogen-containing 6 membered heterocycle of general formula (A5-5) or (A5-6) or a nitrogen-containing 5 membered ring of general formula (A5-2);

in the formula (A5-2), W 1 represents —N— or ═C—; W 2 to W 5 independently represent ═N— or ═C(R 4 )— respectively; R 4 represents a hydrogen atom or a substituent; at least one of W 1 to W 5 represents ═N—; * represents a linkage position to the general formula (A5), and if two of ═C(R 4 )— are adjacently placed in series, two of R 4 may be condensed together to form a ring;

in the general formula (A5-5), Y 1 , Y 2 , and Y 5 to Y 9 independently represent ═N— or ═C(R 3 )— respectively; R 3 represents a hydrogen atom or a substituent; at least one of Y 1 , Y 2 and Y 5 represents ═N—; * represents a linkage position to the general formula (A5), X 2 represents one member selected from an oxygen atom, a sulfur atom, —NR 2 —, and —CR 3 R 4 —, wherein R 2 and R 4 are identical to said R 2 and R 4 , respectively;

in the general formula (A5-6), Y 1 , Y 2 and Y 5 to Y 9 independently represent ═N— or ═C(R 3 )— respectively; R 3 represents a hydrogen atom or a substituent; at least one of Y 1 , Y 2 and Y 5 represents ═N—; * represents a linkage position to the general formula (A5), X 2 represents one member selected from an oxygen atom, a sulfur atom, —NR 2 — or —CR 3 R 4 —, wherein R 2 and R 4 are identical to said R 2 and R 4 , respectively.

2. An organic electroluminescent element including an organic layer provided between at least a pair of a cathode and an anode, wherein
the organic layer is formed of at least one layer including a luminescent layer, and
at least one layer forming the organic layer contains at least one selected from compounds represented by general formulae (A2) and (A5):

wherein in the general formula (A2), X represents an oxygen atom or a sulfur atom;

wherein in the general formula (A5), X 1 represents an oxygen atom or a sulfur atom; Z 2 , Z 3 , Z 5 to Z 8 independently represent ═N— or ═C(R 1 )— respectively; R 1 represents a hydrogen atom or a substituent; Z 4 is ═N—, Z 1 represents ═N— or ═C(R 2 )—, and R 2 represents a nitrogen-containing 6 membered heterocycle of general formula (A5-7) or (A5-8) or a nitrogen-containing 5 membered ring of general formula (A5-2);

in the formula (A5-2), W 1 represents —N— or ═C—; W 2 to W 5 independently represent ═N— or ═C(R 4 )— respectively; R 4 represents a hydrogen atom or a substituent; at least one of W 1 to W 5 represents ═N—; * represents a linkage position to the general formula (A5), and if two of ═C(R 4 )— are adjacently placed in series, two of R 4 may be condensed together to form a ring;

wherein in the general formula (A5-7), Y 1 to Y 3 , and Y 6 to Y 9 independently represent ═N— or ═C(R 3 )— respectively; R 3 represents a hydrogen atom or a substituent; at least one of Y 1 to Y 3 represents ═N—; * represents a linkage position to the general formula (A5), X 2 represents one member selected from an oxygen atom, a sulfur atom, —NR 2 — or —CR 3 R 4 , R 2 and R 4 are identical to said R 2 and R 4 , respectively;

wherein in the general formula (A5-8), Y 1 to Y 3 , and Y 6 to Y 9 independently represent ═N— or ═C(R 3 )— respectively; R 3 represents a hydrogen atom or a substituent; at least one of Y 1 to Y 3 represents ═N—; * represents a linkage position to the general formula (A5), X 2 represents one member selected from an oxygen atom, a sulfur atom, —NR 2 — or —CR 3 R 4 —, R 2 and R 4 are identical to said R 2 and R 4 , respectively.

3. An organic electroluminescent element including an organic layer provided between at least a pair of a cathode and an anode, wherein
the organic layer is formed of at least one layer including a luminescent layer, and at least one layer forming the organic layer contains at least one selected from
compounds (4) to (6) and (11) to (14):

4. An organic electroluminescent element including an organic layer provided between at least a pair of a cathode and an anode, wherein
the organic layer is formed of at least one layer including a luminescent layer, and
at least one layer forming the organic layer contains at least one selected from compounds represented by general formulae (A1) to (A5):

wherein in the general formulae (A1) to (A3), X represents an oxygen atom or a sulfur atom;

wherein in the general formula (A5), X 1 represents an oxygen atom or a sulfur atom; Z 1 to Z 8 independently represent ═N— or ═C(R 1 )— respectively; R 1 represents a hydrogen atom or a substituent; at least one of Z 1 to Z 4 represents ═N—, if Z 4 is ═N—, Z 1 represents ═N— or ═C(R 2 )—, and R 2 represents a nitrogen-containing 6 membered heterocycle of general formula (A5-1) or a nitrogen-containing 5 membered ring of general formula (A5-2), if Z 4 is ═C(R 1 )—, at least Z 3 represents ═N—;

wherein in the formula (A5-1), Y 1 to Y 5 independently represent ═N— or ═C(R 3 )— respectively; R 3 represents a hydrogen atom or a substituent; at least one of Y 1 to Y 5 represents ═N—; * represents a linkage position to the general formula (A5), if two of ═C(R 3 )— are adjacently placed in series, two of R 3 may be condensed together to form a ring;

wherein in the formula (A5-2), W 1 represents —N— or ═C—

Assignees

• Konica Minolta Inc

Inventors

• Ishidai Keiko
• Otsu Shinya
• Sekine Noboru

Classifications

• C07D519/00

  Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups C07D453/00 or C07D455/00 · CPC title

• C09K11/025

  non-luminescent particle coatings or suspension media · CPC title

• C07D403/14 Primary

  containing three or more hetero rings · CPC title

• C07D491/048

  the oxygen-containing ring being five-membered · CPC title

• C07D405/14

  containing three or more hetero rings · CPC title