ORGANIC LIGHT EMITTING DIODE DEVICE

• US 20150001489A1
• Filed: 12/17/2013
• Published: 01/01/2015
• Est. Priority Date: 07/01/2013
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: LEE, Jae-Yong
• Granted Patent: US 9,478,748 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 2211/1416 Condensed systems
• CPC Class Codes: C09K 2211/1458 containing sulfur as the only heteroatom
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 2101/90 Multiple hosts in the emissive layer
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 85/40 Organosilicon compounds, e.g. TIPS pentacene
• CPC Class Codes: H10K 85/622 containing four rings, e.g. pyrene
• CPC Class Codes: H10K 85/626 containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
• CPC Class Codes: H10K 85/633 comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
• CPC Class Codes: H10K 85/654 comprising only nitrogen as heteroatom H10K85/652 takes precedence
• 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

An organic light emitting diode display including an anode; a cathode facing the anode; and an emission layer between the anode and the cathode, wherein the emission layer includes a compound represented by Chemical Formula 1, below, and a compound represented by Chemical Formula 2, below:

Claims

1. An organic light emitting diode display, comprising:

an anode;

a cathode facing the anode; and

an emission layer between the anode and the cathode,

wherein the emission layer includes a compound represented by Chemical Formula 1, below, and a compound represented by Chemical Formula 2, below;

2. The organic light emitting diode display as claimed in claim 1, wherein:

L¹ is a substituted or unsubstituted C6 to C30 arylene group, and

n2 and n3 are 0.

3. The organic light emitting diode display as claimed in claim 2, wherein L¹ is a substituted or unsubstituted phenylene group or a substituted or unsubstituted naphthalene group.

4. The organic light emitting diode display as claimed in claim 1, wherein m2 and m3 are 0.

5. The organic light emitting diode display as claimed in claim 4, wherein R is a substituted or unsubstituted phenyl group, a substituted or unsubstituted pyridinyl group, substituted or unsubstituted pyrimidinyl group, or a substituted or unsubstituted 1,3,5-triazinyl group.

6. The organic light emitting diode display as claimed in claim 4, wherein R⁴ is a substituted or unsubstituted pyridinyl group, a substituted or unsubstituted pyrimidinyl group, or a substituted or unsubstituted 1,3,5-triazinyl group.

7. The organic light emitting diode display as claimed in claim 1, wherein the compound represented by Chemical Formula 1 is represented by one of Chemical Formula 1-1 to Chemical Formula 1-24, below:

8. The organic light emitting diode display as claimed in claim 1, wherein the compound represented by Chemical Formula 2 is represented by one of Chemical Formula 2-1 to Chemical Formula 2-20, below:

9. The organic light emitting diode display as claimed in claim 1, wherein the emission layer includes the compound represented by Chemical Formula 1 and the compound represented by Chemical Formula 2 as host materials, and further includes a dopant material.

10. The organic light emitting diode display as claimed in claim 9, wherein the dopant material includes a phosphorescent dopant material.

11. The organic light emitting diode display as claimed in claim 9, wherein the compound represented by Chemical Formula 1 and the compound represented by Chemical Formula 2 are present in the emission layer in a weight ratio of about 1:

9 to about 9;

1.

12. The organic light emitting diode display as claimed in claim 9, wherein the host material and the dopant material are included in the emission layer in a weight ratio of about 6:

4 to about 9;

1.

13. The organic light emitting diode display as claimed in claim 9, wherein the compound represented by Chemical Formula 1, the compound represented by Chemical Formula 2, and the dopant material are included in the emission layer in a weight ratio of about 5:

4;

1 to about 7;

2;

1.