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

Organic light emitting device (OLED) and manufacturing method thereof

An electroluminescent device and a luminescent technology, which are applied in the manufacture of organic semiconductor devices, electric solid devices, semiconductor/solid state devices, etc., can solve the problems of unfavorable practical application of OLEDs, poor thermal stability, and reduced service life, and achieve Low cost, stable properties, and improved service life

Inactive Publication Date: 2014-12-03
OCEANS KING LIGHTING SCI&TECH CO LTD +2
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, OLED has not been widely used in daily life. In addition to the high price, the short service life is also an important reason restricting its application.
In OLED devices, a large number of organic substances are used as part of the structure. Usually, organic substances have poor thermal stability and poor electrical conductivity. During the use of the device, the heat generated will degrade the organic substances to varying degrees, resulting in The device gradually fails and the service life decreases, so it is not conducive to the practical application of OLED

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 (OLED) and manufacturing method thereof
  • Organic light emitting device (OLED) and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A method for preparing an organic electroluminescent device, comprising the following steps:

[0063] (1) Put the glass substrate in deionized water containing detergent for ultrasonic cleaning. After cleaning, use isopropanol and acetone in ultrasonic treatment for 20 minutes, and then blow dry with nitrogen to obtain a clean substrate;

[0064] (2) In a vacuum of 1×10 -4 In Pa's vacuum thermal evaporation coating system, Ag is evaporated on the surface of the substrate as the cathode, with a thickness of 18nm and an evaporation speed of 0.5nm / s;

[0065] (3) In a vacuum of 1×10 -4 In Pa's vacuum sputtering coating system, TiO is sputtered on the cathode surface 2 As an electron transport layer, the thickness is 20nm, and the sputtering speed is 0.2nm / s;

[0066] (4) In a vacuum of 1×10 -4 In the vacuum thermal evaporation coating system, the light-emitting layer, the hole transport layer and the anode are sequentially evaporated on the surface of the electron tran...

Embodiment 2

[0073] A method for preparing an organic electroluminescent device, comprising the following steps:

[0074] (1) Put the glass substrate in deionized water containing detergent for ultrasonic cleaning. After cleaning, use isopropanol and acetone in ultrasonic treatment for 20 minutes, and then blow dry with nitrogen to obtain a clean substrate;

[0075] (2) In a vacuum of 1×10 -3 In Pa's vacuum thermal evaporation coating system, Al is evaporated on the surface of the substrate as a cathode with a thickness of 25nm and an evaporation rate of 0.5nm / s;

[0076] (3) In a vacuum of 1×10 -3 In Pa's vacuum sputtering coating system, ZnO is sputtered on the cathode surface as an electron transport layer with a thickness of 10nm and a sputtering speed of 0.2nm / s;

[0077] (4) In a vacuum of 1×10 -3 In the vacuum thermal evaporation coating system, the light-emitting layer, the hole transport layer and the anode are sequentially evaporated on the surface of the electron transport la...

Embodiment 3

[0083] A method for preparing an organic electroluminescent device, comprising the following steps:

[0084] (1) Put the glass substrate in deionized water containing detergent for ultrasonic cleaning. After cleaning, use isopropanol and acetone in ultrasonic treatment for 20 minutes, and then blow dry with nitrogen to obtain a clean substrate;

[0085] (2) In a vacuum of 1×10 -5 In Pa's vacuum thermal evaporation coating system, Sm is evaporated on the surface of the substrate as the cathode, with a thickness of 35nm and an evaporation rate of 0.5nm / s;

[0086] (3) In a vacuum of 1×10 -5 In the vacuum sputtering coating system of Pa, Nb is sputtered on the cathode surface 2 o 5 As an electron transport layer, the thickness is 50nm, and the sputtering speed is 0.2nm / s;

[0087] (4) In a vacuum of 1×10 -5 In the vacuum thermal evaporation coating system, the light-emitting layer, the hole transport layer and the anode are sequentially evaporated on the surface of the elect...

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 (OLED) and a manufacturing method thereof. The OLED comprises a glass substrate, a cathode, an electron transmission layer, a light emitting layer, a hole transmission layer, an anode, and a packaging layer stacked in sequence. Material of the electron transmission layer is titanium dioxide, zinc oxide or niobium pentaoxide. Both the hole transmission layer and the electron transmission adopt inorganic oxide material with high thermal stability, the heat-resisting degradation performance is far superior to that of the organic material, electron transmission performance and hole transmission performance are both provided, the performance is stable, and the service life of the OLED can be improved.

Description

technical field [0001] The invention belongs to the field of organic electroluminescence, and in particular relates to an organic electroluminescence device and a preparation method thereof. Background technique [0002] An organic electroluminescent device (OLED) is an energy conversion device that uses organic materials as light-emitting materials and can convert applied electrical energy into light energy. It has outstanding performances such as ultra-thin, self-luminous, fast response, low power consumption, etc., and has extremely broad application prospects in display, lighting and other fields. [0003] The structure of organic electroluminescent devices is a sandwich structure, with one or more organic thin films sandwiched between the cathode and the conductive anode. In a device with a multi-layer structure, the inside of the two poles mainly includes a light emitting layer, an injection layer and a transport layer. The organic electroluminescent device is a carr...

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): H01L51/52H01L51/54H01L51/56
CPCH10K50/15H10K50/16H10K2102/00H10K71/00
Inventor 周明杰冯小明张娟娟王平
Owner OCEANS KING LIGHTING SCI&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