Organic light emitting diode and organic light emitting device including the same

Patent metadata

Field	Value
Publication number	US-2022209115-A1
Application number	US-202117522620-A
Country	US
Kind code	A1
Filing date	Nov 9, 2021
Priority date	Dec 29, 2020
Publication date	Jun 30, 2022
Grant date	—

Abstract

An organic light emitting diode and an organic light emitting device including the same are described. The organic light emitting diode can include a first electrode, a second electrode facing the first electrode, and a first emitting part including a red emitting material layer and a first hole transporting layer and positioned between the first and second electrodes. The red emitting material layer can include a first red host and a red dopant, and the first hole transporting layer can include a hole transporting material and is positioned between the first electrode and the red emitting material layer. At least one of the first red host and the hole transporting material is a compound of the following Formula:

First claim

What is claimed is:

1 . An organic light emitting diode, comprising:
a first electrode; a second electrode facing the first electrode; and a first emitting part including a red emitting material layer and a first hole transporting layer and positioned between the first and second electrodes, the red emitting material layer including a first red host and a red dopant, and the first hole transporting layer including a hole transporting material and positioned between the first electrode and the red emitting material layer, wherein at least one of the first red host and the hole transporting material is a compound of Formula 1-1:

wherein:
D denotes a deuterium atom,
each of a, b and c is independently an integer of 0 to 4,
d is an integer of 0 to 3, and
at least one of a, b, c and d is a positive integer.

2 . The organic light emitting diode according to claim 1 , wherein the compound of Formula 1-1 is one of compounds in Formula 2:

3 . The organic light emitting diode according to claim 1 , wherein one of the first red host and the hole transporting material is the compound of Formula 1-1, and the other one of the first red host and the hole transporting material is a compound of Formula 3-1:

wherein each of e, f, g, i and 1 is independently an integer of 0 to 4 each of h, k, m and n is independently an integer of 0 to 3, and
j is an integer of 0 to 5.

4 . The organic light emitting diode according to claim 3 , wherein the compound of Formula 3-1 is one of compounds in Formula 4:

5 . The organic light emitting diode according to claim 3 , further comprising:
a second emitting part including a first blue emitting material layer and positioned between the first electrode and the first emitting part; and a first charge generation layer including a P-type charge generation material and positioned between the first emitting part and the second emitting part.

6 . The organic light emitting diode according to claim 5 , wherein the P-type charge generation material is one of the compound of Formula 1-1 and the compound of Formula 3-1.

7 . The organic light emitting diode according to claim 5 , wherein the P-type charge generation material is a compound in Formula 29-2:

8 . The organic light emitting diode according to claim 5 , further comprising:
a third emitting part including a second blue emitting material layer and positioned between the first emitting part and the second electrode; and a second charge generation layer positioned between the second emitting part and the third emitting part.

9 . The organic light emitting diode according to claim 8 , wherein the first blue emitting material layer includes a first blue host of Formula 23-2, and the second blue emitting material layer includes a second blue host of Formula 23-3:

wherein each of Ar1 and Ar2 is independently C6 to C20 aryl group, and L is C6 to C20 arylene group,
wherein each of a1 and a2 is independently an integer of 0 to 8,
wherein each of b1, b2, c1, c2, d1 and d2 is independently an integer of 0 to 20, and
wherein a summation of a1, b1, c1 and d1 is greater than a summation of a2, b2, c2 and d2.

10 . The organic light emitting diode according to claim 9 , wherein the first blue host is represented by Formula 23-4, and the second blue host is represented by Formula 23-5:

wherein each of a1 and a2 is independently an integer of 0 to 8,
wherein each of b1, b2, c1 and c2 is independently an integer of 0 to 7,
wherein each of d1 and d2 is independently an integer of 0 to 4, and
wherein a summation of a1, b1, c1 and d1 is greater than a summation of a2, b2, c2 and d2.

11 . The organic light emitting diode according to claim 10 , wherein the first blue host is a compound in Formula 24-1, and the second blue host is one of compounds in Formula 24-2:

12 . The organic light emitting diode according to claim 9 , wherein the first blue emitting material layer includes a first blue dopant being a boron derivative, and the second blue emitting material layer includes a second blue dopant being a boron derivative.

13 . The organic light emitting diode according to claim 12 , wherein each of the first and second blue dopants is represented by Formula 25:

wherein each of R 11 to R 14 , each of R 21 to R 24 , each of R 31 to R 35 and each of R 41 to R 45 is selected from the group of hydrogen, deuterium, C1 to C10 alkyl group, C6 to C30 aryl group unsubstituted or substituted with C1 to C10 alkyl group, C12 to C30 arylamine group and C5 to C30 heteroaryl group, or adjacent two of R 1 to R 14 , adjacent two of R 21 to R 24 , adjacent two of R 31 to R 35 and adjacent two of R 41 to R 45 are connected to each other to form a fused ring unsubstituted or substituted with C1 to C10 alkyl group, and
wherein R 51 is selected from the group consisting of hydrogen, deuterium, C1 to C10 alkyl group and C3 to C30 cycloalkyl group, C6 to C30 aryl group, C5 to C30 heteroaryl group unsubstituted or substituted with deuterium and C6 to C30 arylamine group unsubstituted or substituted with C1 to C10 alkyl group.

14 . The organic light emitting diode according to claim 13 , wherein each of the first and second blue dopants is independently selected from compounds in Formula 26:

15 . The organic light emitting diode according to claim 13 , wherein a weight % of the first blue dopant in the first blue emitting material layer is equal to or greater than a weight % of the second blue dopant in the second blue emitting material laver.

16 . The organic light emitting diode according to claim 15 , wherein a thickness of the first blue emitting material layer is equal to or smaller

Assignees

• Lg Display Co Ltd

Inventors

• Yu Young-Jun
• Kim Sang-Beom
• Kim Jung-Keun
• Seo Jeong-Dae
• Kim Sung-Hoon
• Do Kwang-Seok
• Lee Dong-Hun
• Kim Won-Bin

Classifications

• H10K85/615

  Polycyclic condensed aromatic hydrocarbons, e.g. anthracene · CPC title

• H10K50/19

  Tandem OLEDs · CPC title

• H10K50/11 Primary

  characterised by the electroluminescent [EL] layers · CPC title

• H10K85/658

  Organoboranes · CPC title

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title