Unlock instant, AI-driven research and patent intelligence for your innovation.

Compound, luminescent layer guest material, organic electroluminescent device and display device

A compound, light-emitting layer technology, applied in the field of organic electroluminescent devices and display devices, compounds, light-emitting layer guest materials, can solve the problem of high material evaporation temperature, restricting the display function and development of OLED display devices, poor luminous efficiency and light stability and other problems, to achieve the effect of low evaporation temperature, excellent display effect and small molecular weight

Active Publication Date: 2021-06-18
BEIJING NORMAL UNIVERSITY +1
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the luminous efficiency and light stability of the light-emitting layer guest materials currently used in OLEDs are poor, and the evaporation temperature of the materials is high, which restricts the display function and development of OLED display 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
  • Compound, luminescent layer guest material, organic electroluminescent device and display device
  • Compound, luminescent layer guest material, organic electroluminescent device and display device
  • Compound, luminescent layer guest material, organic electroluminescent device and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0200] A glass plate coated with a transparent conductive layer of indium tin oxide (ITO) with a thickness of 130 nm was ultrasonically treated in a commercial cleaning agent, rinsed in deionized water, ultrasonically degreased in acetone-ethanol mixed solvent, and baked in a clean environment. Baked until completely dehydrated, cleaned with UV light and ozone, and bombarded with a beam of low-energy cations;

[0201] Then, the above-mentioned glass substrate with the anode is placed in a vacuum chamber, and the vacuum is evacuated to less than 10 -5 torr, the hole injection layer is vacuum-evaporated on the above-mentioned anode layer film, the material of the hole injection layer includes the hole injection layer material HT-34 and the p-type dopant p-1, and the method of multi-source co-evaporation is used for evaporation Plating, adjust the evaporation rate of hole injection layer material HT-34 to be 0.1nm / s, the evaporation rate of p-type dopant p-1 is 3% of the evaporat...

Embodiment 2-13

[0209] Except that compounds G2, G3, G8, G9, G10, G12, G14, G19, G21, G22, G23, and G27 were used instead of G1, the rest were the same as in Example 1.

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 provides a compound as shown in a general formula (I). The compoundcan be used for an organic electroluminescent device as a guest material of a luminescent layer. The compound comprises a natural heterocyclic ring and iridium (Ir) coordinated structure, and the light emitting wavelength of the compound can be effectively regulated and controlled. When the compound is used as a guest material of a light-emitting layer, the light-emitting efficiency and the light stability of the organic electroluminescent device can be improved. In addition, the compound provided by the invention is small in molecular weight, is applied to a light-emitting layer, is relatively low in evaporation temperature, and is beneficial to processing. The invention also provides a luminescent layer guest material containing the compound shown in the general formula (I), an organic electroluminescent device and a display device.

Description

technical field [0001] The present application relates to the field of organic light-emitting display, in particular to a compound, a light-emitting layer guest material, an organic electroluminescent device and a display device. Background technique [0002] Organic electroluminescent display (hereinafter referred to as OLED) has a series of advantages such as self-luminescence, low-voltage DC drive, full curing, wide viewing angle, light weight, simple composition and process, etc. Compared with liquid crystal display, organic electroluminescent display is not It requires a backlight source, has a large viewing angle and low power, and its response speed can reach 1000 times that of a liquid crystal display, but its manufacturing cost is lower than that of a liquid crystal display with the same resolution. Therefore, organic electroluminescent devices have very broad application prospects. With the continuous advancement of OLED technology in the two major fields of light...

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): C07F15/00C09K11/06H01L51/54
CPCC07F15/0033C09K11/06C09K2211/185H10K85/342H10K50/11H10K2101/10H10K50/12
Inventor 陈雪波王储王娟娟陈跃方维海丰佩川
Owner BEIJING NORMAL UNIVERSITY