Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Organic light-emitting device

A technology of organic light-emitting devices and light-emitting layers, which is applied in the manufacturing of electric solid-state devices, semiconductor devices, and semiconductor/solid-state devices, etc., can solve the problems of unbalanced carrier injection, low luminous efficiency of light-emitting devices, and offset of recombination area. To achieve the effect of improving the generation rate and utilization rate

Inactive Publication Date: 2019-03-26
CHANGCHUN HYPERIONS TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, traditional OLED display devices often have problems with luminous efficiency and service life. The main reasons are as follows: on the one hand, it depends on the luminous performance of the organic light-emitting materials used, and the matching degree between the composite materials of each layer; on the other hand, it depends on Exciton utilization, due to the different transport speeds of holes and electrons in organic optoelectronic materials, conventional device structures are prone to the problem of unbalanced carrier injection, resulting in low recombination efficiency of electrons and holes and shifts in the recombination area, thus Lead to low luminous efficiency and low lifespan of organic electroluminescent devices

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Organic light-emitting device
  • Organic light-emitting device
  • Organic light-emitting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Embodiment 1: the synthesis of compound 1

[0096]

[0097] Synthesis of Intermediate A1

[0098] Tri-tert-butylphosphine (4.4 mL of a 1.0 M solution in toluene, 1.48 g, 0.05 mmol), palladium acetate (0.4 g, 1.83 mmol) and sodium tert-butoxide (52.6 g, 549 mmol) were added to 2-bromotriphenylene (56.0 g, 183 mmol) and 2-amino-9,9-spirobifluorene (60.6 g, 183 mmol) in degassed toluene (1 L), and the mixture was heated at reflux for 2 hours. The reaction mixture was cooled to room temperature, diluted with toluene and filtered through celite. The filtrate was diluted with water and extracted with toluene, and the combined organic phases were evaporated under vacuum. The residue was filtered through silica gel and recrystallized. Intermediate A1 (81.6 g, 80% yield) was obtained. Mass Spectrum m / z: 557.63 (calculated: 557.68). Theoretical element content (%)C 43 h 27 N: C, 92.61; H, 4.88; N, 2.51 Measured element content (%): C, 92.62; H, 4.86; N, 2.52. The above...

Embodiment 2

[0100] Embodiment 2: the synthesis of compound 1-25

[0101] Replace the 2-amino-9,9-spirobifluorene in Example 1 with equimolar 9-amino-7,7-dimethyl-7H-indolo[1,2-f]quinoline, other The steps were all the same as the synthesis of Example 1 to obtain the target product compound 1-25. Mass Spectrum m / z: 729.83 (calculated: 729.91). Theoretical element content (%)C 54 h 39 N 3 : C, 88.86; H, 5.39; N, 5.76 The measured element content (%): C, 88.88; H, 5.37; N, 5.75. The above results confirmed that the obtained product was the target product.

Embodiment 3

[0102] Embodiment 3: the synthesis of compound 1-26

[0103] Replace the 2-amino-9,9-spirobifluorene in Example 1 with equimolar 2-amino-11,11-dimethyl-11H-benzo[b]fluorene, 9-bromo-7,7 -Dimethyl-7H-indolo[1,2-f]quinoline was replaced by equimolar 2-bromo-11,11-dimethyl-11H-benzo[b]fluorene, and other steps were carried out with The synthesis of Example 1 was the same, and the target product compound 1-26 was obtained. Mass Spectrum m / z: 727.26 (calculated: 727.93). Theoretical element content (%)C 56 h 41 N: C, 92.40; H, 5.68; N, 1.92 Measured element content (%): C, 92.42; H, 5.67; N, 1.92. The above results confirmed that the obtained product was the target product.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an organic light-emitting device and relates to the technical field of organic photoelectricity. The invention provides the organic light-emitting device. A hole transport layer comprises a first compound represented by the formula (1), and an electron transport layer comprises a second compound represented by the formula (2). The organic light-emitting device of the present invention can effectively trap carriers and excitons of a light-emitting layer in the light-emitting layer by combining the first compound and the second compound, and the optimal combination of thetwo compounds enhances the formation rate and utilization rate of the excitons in the light-emitting layer, the imbalance of the carriers in the light-emitting layer is avoided, and the deteriorationof the life of the device due to heat accumulation at an interface between the electron transport layer and the light-emitting layer is avoided. The entrapment is effective for the improvement of theexternal quantum efficiency of the organic light-emitting device and for the reduction of the driving voltage, and the luminous efficiency and the lifetime of the device are improved.

Description

technical field [0001] The invention relates to the field of organic photoelectric technology, in particular to an organic light emitting device. Background technique [0002] In recent years, Organic Light Emitting Diode (OLED: Organic Light Emitting Diode) as a new and promising display technology has gradually entered people's field of vision. Compared with traditional display technologies, it has significant advantages in voltage characteristics, luminous brightness, luminous efficiency, device weight, response speed, and viewing angle, and has broad market prospects due to its low-cost potential. [0003] Typically, OLEDs have a layered or laminated structure. For example, a typical OLED has an anode / organic light-emitting layer / cathode multilayer structure. OLEDs can also have various other structures such as anode / hole injection layer / hole transport layer / light emitting layer / electron transport layer / electron injection layer / cathode multilayer structure or anode / hol...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54
CPCH10K85/615H10K85/622H10K85/624H10K85/636H10K85/626H10K85/633H10K85/654H10K85/657H10K85/6572H10K85/6574H10K50/15H10K50/16
Inventor 刘喜庆蔡辉
Owner CHANGCHUN HYPERIONS TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com