THIOXANTHONE COMPOUND AND ORGANIC LIGHT EMITTING ELEMENT HAVING THE SAME

• US 20130221340A1
• Filed: 10/31/2011
• Published: 08/29/2013
• Est. Priority Date: 11/08/2010
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Kamatani, Jun, Seki, Masanori, Sekiguchi, Takeshi, Nishide, Yosuke, Saitoh, Akihito
• Granted Patent: US 8,952,367 B2
• Time in Patent Office: Days
• US Class Current: 257/40
• CPC Class Codes: C07D 335/16 Oxygen atoms, e.g. thioxanthones
• CPC Class Codes: C07D 409/04 directly linked by a ring-member-to-ring-member bond
• CPC Class Codes: C07D 409/10 linked by a carbon chain containing aromatic rings
• CPC Class Codes: C07D 409/14 containing three or more hetero rings
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1007 Non-condensed systems
• CPC Class Codes: C09K 2211/1011 Condensed systems
• CPC Class Codes: C09K 2211/1088 containing oxygen as the only heteroatom
• CPC Class Codes: C09K 2211/1092 containing sulfur as the only heteroatom
• CPC Class Codes: H05B 33/10 Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/16 Electron transporting layers
• CPC Class Codes: H10K 50/18 Carrier blocking layers
• CPC Class Codes: H10K 85/626 containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
• CPC Class Codes: H10K 85/657 Polycyclic condensed heteroaromatic hydrocarbons
• CPC Class Codes: H10K 85/6576 comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene

Abstract

Provided is an organic light emitting element having a high light emission efficiency and a low drive voltage. In the organic light emitting element including a positive electrode, a negative electrode and an organic compound layer disposed between the positive electrode and the negative electrode, the organic compound layer includes a thioxanthone compound represented by the following general formula [1].

Claims

1. A thioxanthone compound represented by the following general formula [1]:

2. The thioxanthone compound according to claim 1, wherein the R₁, R₄, R₅ and R₈ are each a hydrogen atom.

3. An organic light emitting element comprising:

a positive electrode, and a negative electrode; and

an organic compound layer disposed between the positive electrode and the negative electrode,

wherein the organic compound layer comprises a thioxanthone compound represented by the following general formula [1];

4. The organic light emitting element according to claim 3, wherein the thioxanthone compound is contained in one of a hole blocking layer and a light emitting layer.

5. The organic light emitting element according to claim 3, wherein:

the thioxanthone compound is contained in the light emitting layer;

the light emitting layer comprises a plurality of hosts and a guest; and

one of the plurality of hosts is the thioxanthone compound.

6. The organic light emitting element according to claim 5, wherein the guest is a phosphorescent light emitting material.

7. The organic light emitting element according to claim 6, wherein the phosphorescent light emitting material is an iridium complex.

8. A display apparatus comprising a plurality of pixels, wherein the pixels each comprise the organic light emitting element according to claim 3, and a switching element connected to the organic light emitting element.

9. An image input apparatus comprising:

a display section to display an image, and an input section to input image information, wherein;

the display section comprises a plurality of pixels; and

the pixels each comprise the organic light emitting element according to claim 3, and a switching element connected to the organic light emitting element.

10. A device comprising a substrate and the organic light emitting device according to claim 3.