NOVEL COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE COMPRISING SAME

• US 20130334517A1
• Filed: 01/17/2012
• Published: 12/19/2013
• Est. Priority Date: 01/17/2011
• Status: Active Grant

• Current Assignee: LG Chem Limited (LG Corporation)
• Original Assignee: LG Chem Limited (LG Corporation)
• Inventors: Hong, Sung Kil, Kim, Yun Hwan, Park, Tae Yoon, Jang, Hye Young, Jang, Boonjae
• Granted Patent: US 9,065,060 B2
• Time in Patent Office: Days
• US Class Current: 257/40
• 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 2211/1014 bridged by heteroatoms, e.g. N, P, Si or B
• CPC Class Codes: H05B 33/14 characterised by the chemical or physical composition or the arrangement of the electroluminescent material , or by the simultaneous addition of the electroluminescent material in or onto the light source
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/15 Hole transporting layers
• CPC Class Codes: H10K 85/342 comprising iridium
• CPC Class Codes: H10K 85/611 Charge transfer complexes
• CPC Class Codes: H10K 85/615 Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
• CPC Class Codes: H10K 85/631 Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
• CPC Class Codes: H10K 85/633 comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
• CPC Class Codes: H10K 85/636 comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom
• CPC Class Codes: H10K 85/6572 comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
• CPC Class Codes: H10K 85/6576 comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene

Abstract

The present invention relates to a novel compound and an organic light emitting device comprising the same. The compound according to the present invention may be used as hole injection, hole transport, electron injection and transport, and light emitting materials in an organic light emitting device, and the organic light emitting device according to the present invention has excellent properties in terms of efficiency, driving voltage, and life-span.

Claims

1. A compound represented by the following Chemical Formula 1:

2. The compound of claim 1, wherein Chemical Formula 1 is represented by the following Chemical Formulas 2 to 5:

3. The compound of claim 1, wherein Ar₁ of Chemical Formula 1 is hydrogen or a phenyl group.

4. The compound of claim 1, wherein at least one of Ar₂ and Ar₃ of Chemical Formula 1 is an amine group substituted or unsubstituted by a phenyl group, a biphenyl group, a terphenyl group, a phenyl group substituted by a fluorenyl group, a naphthyl group, a fluorenyl group substituted by an alkyl group, a dibenzothiophenyl group, or a phenanthrenyl group.

5. The compound of claim 1, wherein at least one of Ar₂ and Ar₃ of Chemical Formula 1 is a phenyl group substituted by an amine group substituted or unsubstituted by a phenyl group, a biphenyl group, a terphenyl group, a phenyl group substituted by a fluorenyl group, a naphthyl group, a fluorenyl group substituted by an alkyl group, a dibenzothiophenyl group, or a phenanthrenyl group;

a biphenyl group substituted by an amine group substituted or unsubstituted by a phenyl group, a biphenyl group, a terphenyl group, a phenyl group substituted by a fluorenyl group, a naphthyl group, a fluorenyl group substituted by an alkyl group, a dibenzothiophenyl group, or a phenanthrenyl group;

a fluorenyl group substituted by an amine group substituted or unsubstituted by a phenyl group, a biphenyl group, a terphenyl group, a phenyl group substituted by a fluorenyl group, a naphthyl group, a fluorenyl group substituted by an alkyl group, a dibenzothiophenyl group, or a phenanthrenyl group;

or a naphthyl group substituted by an amine group substituted or unsubstituted by a phenyl group, a biphenyl group, a terphenyl group, a phenyl group substituted by a fluorenyl group, a naphthyl group, a fluorenyl group substituted by an alkyl group, a dibenzothiophenyl group, or a phenanthrenyl group.

6. The compound of claim 1, wherein at least one of Ar₂ and Ar₃ of Chemical Formula 1 is the following substituent group

7. The compound of claim 2, wherein Ar₄, Ar₇, Ar₁₀, and Ar₁₄ of Chemical Formulas 2 to 5 are hydrogen or a phenyl group.

8. The compound of claim 2, wherein Ar₅, Ar₆, Ar₈, Ar₉, Ar₁₁, Ar₁₂, Ar₁₃, Ar₁₅, Ar₁₆, and Ar₁₇ of Chemical Formulas 2 to 5 are each independently a phenyl group, a biphenyl group, a terphenyl group, a phenyl group substituted by a fluorenyl group, a naphthyl group, a fluorenyl group substituted by an alkyl group, a dibenzothiophenyl group, or a phenanthrenyl group.

9. The compound of claim 2, wherein L₁, L₂, L₃, and L₅ of Chemical Formulas 2 to 5 are each independently a direct bond, a phenylene group, a biphenylene group, a naphthylene group, or a fluorenylene group.

10. The compound of claim 2, wherein L₄ and L₆ of Chemical Formulas 2 to 5 are each independently a biphenylene group or a terphenylene group.

11. The compound of claim 1, wherein the compound represented by Chemical Formula 1 is selected from the group consisting of the following compounds:

12. The compound of claim 1, wherein the compound represented by Chemical Formula 1 is selected from the group consisting of the following compounds:

13. An organic light emitting device comprising a first electrode, a second electrode, and one or more organic material layers disposed between the first electrode and the second electrode, wherein one or more layers of the organic material layers comprise the compound according to claim 1.

14. The organic light emitting device of claim 13, wherein the organic material layer comprises one or more layers of a hole injection layer, a hole transport layer, and a layer injecting and transporting holes simultaneously, and one or more layers of the layers comprise a compound represented by Chemical Formula 1.

15. The organic light emitting device of claim 13, wherein the organic material layer comprises a light emitting layer, and the light emitting layer comprises the compound represented by Chemical Formula 1.

16. The organic light emitting device of claim 13, wherein the organic material layer comprises a hole transport layer, and the hole transport layer comprises the compound represented by Chemical Formula 1.

17. The organic light emitting device of claim 13, wherein the organic material layer comprises one or more layers of an electron transport layer, an electron injection layer, and a layer transporting and injecting electrons simultaneously, and one or more layers of the layers comprise the compound represented by Chemical Formula 1.

18. The organic light emitting device of claim 13, wherein the organic light emitting device is a top emission type, a bottom emission type, or a both-sided emission type.