Organic light emitting device

A technology of organic light-emitting devices and light-emitting layers, which is applied in the manufacture of electric solid-state devices, semiconductor devices, semiconductor/solid-state devices, etc., can solve the problems of material loss and difficulty in manufacturing devices with large areas, and achieve high service life characteristics and low The effect of driving voltage and high efficiency

Pending Publication Date: 2022-03-11
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are problems that loss of material often occurs when an organic light-emitting device is manufactured by a deposition method and it is difficult to manufacture a device with a large area, and in order to solve these problems, a device using a solution method has been developed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0394] According to an exemplary embodiment of the present invention, A is represented by the following Chemical Formula A-1.

[0395] [Chemical formula A-1]

[0396]

[0397] In Chemical Formula A-1,

[0398] Ar1 is substituted or unsubstituted aryl or deuterated aryl,

[0399] Ar2 is substituted or unsubstituted aryl or deuterated aryl,

[0400] T is selected from a direct bond; substituted or unsubstituted aryl; and deuterated aryl, and

[0401] * indicates the point of incorporation in the copolymer.

[0402] In an exemplary embodiment of the present invention, A is represented by the following Chemical Formula A-2.

[0403] [Chemical formula A-2]

[0404]

[0405] In Chemical Formula A-2,

[0406] Ar1 is each independently substituted or unsubstituted aryl or deuterated aryl,

[0407] Ar each independently is a substituted or unsubstituted aryl or deuterated aryl,

[0408] Ar3 is substituted or unsubstituted aryl or deuterated aryl,

[0409] q is an integer...

preparation example 1

[0732] Preparation Example 1. Synthesis of Compound A

[0733]

[0734] Synthesis of A-Int: Put diiodobiphenyl (10.0 g, 24.6 mmol), 4-fluoroaniline (5.12 mL, 54.2 mmol) and sodium tert-butoxide [hereinafter referred to as NaOtBu] (7.10 g, 73.9 mmol) into a round bottom flask (RBF), then introduced toluene (120 mL) therein. Introducing Pd( t Bu 3 P) 2 (0.629 g, 1.23 mmol), the resulting mixture was stirred at 90° C. for 1 hour. Thereafter, water was added thereto, and the organic layer was extracted with ethyl acetate (EA), followed by MgSO 4 It was dried, put dichloromethane (DCM) in it, and the resulting mixture was filtered to obtain A-Int (6.10 g).

[0735] Synthesis of A: A-Int (1.50g, 4.03mmol), L1 (4.83g, 8.46mmol) and NaOtBu (1.16g, 12.1mmol) were put into a round bottom flask (RBF), and toluene (30mL ). After heating the resulting mixture to 90 °C, Pd ( t Bu 3 P) 2 (0.144 g, 0.282 mmol), and the resulting mixture was stirred for 1 hour. Water was added th...

preparation example 2

[0737] Preparation Example 2. Synthesis of Compound B

[0738]

[0739] Synthesis of B-Int: Diiodobiphenyl (12.0 g, 29.6 mmol), 3,4-difluoroaniline (6.45 mL, 65.0 mmol) and NaOtBu (8.52 g, 88.7 mmol) were placed in a round bottom flask (RBF) , and toluene (150 mL) was then introduced therein. Introducing Pd( t Bu 3 P) 2 (0.755 g, 1.48 mmol), the resulting mixture was stirred at 90° C. for 1 hour. Thereafter, water was added thereto, and the organic layer was extracted with ethyl acetate (EA), followed by MgSO 4 It was dried, put dichloromethane (DCM) in it, and the resulting mixture was filtered to obtain B-Int (9.56 g).

[0740] Synthesis of B: B-Int (0.600g, 1.47mmol), L1 (1.70g, 2.98mmol) and NaOtBu (0.424g, 4.41mmol) were put into a round bottom flask (RBF), and toluene (20mL ). After heating the resulting mixture to 90 °C, Pd ( t Bu 3 P) 2 (0.0526 g, 0.103 mmol), and the resulting mixture was stirred for 1 hour. Water was added thereto, and the organic layer...

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Abstract

The present invention relates to an organic light emitting device comprising: an anode; a cathode; and a light emitting layer disposed between the anode and the cathode, in which a first organic material layer is included between the light emitting layer and the anode, the first organic material layer comprising a composition containing a compound of Chemical Formula 1 or a cured product thereof; and including a second organic material layer between the first organic material layer and the light emitting layer, the second organic material layer comprising a composition comprising a copolymer of Chemical Formula 2 or a cured product thereof, where all variables are described herein. [Chemical Formula 1] [Chemical Formula 2]

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2020-0116030 filed on September 10, 2020, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to organic light emitting devices. Background technique [0004] The phenomenon of organic luminescence is one of the instances where electrical current is converted into visible light by internal processes of specific organic molecules. The principle of the organic light emitting phenomenon is as follows. When an organic material layer is disposed between an anode and a cathode and a current is applied between the two electrodes, electrons and holes are injected into the organic material layer from the cathode and the anode, respectively. The electrons and holes injected into the organic material layer recombine to form excitons, and the excitons fall back to the ground state again to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54
CPCH10K85/151H10K85/615H10K85/624H10K85/653H10K85/631H10K85/633H10K50/17H10K85/10H10K85/111H10K85/6574H10K85/322H10K50/15H10K85/626
Inventor 林道原金志勋金珠焕李东焕裴在顺李载澈张松林崔斗焕李根洙李胄旼
Owner LG CHEM LTD
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