5results about How to "Conducive to solid accumulation" patented technology

The application relates to the technical field of organic light-emitting display, and discloses a cyano-substituted aryl ring-connected triazine compound and application thereof. The cyano-substituted aryl ring-connected triazine compound has a structure as shown in formula (I), the compound provided by the application has high bond energy between atoms, good thermal stability, is conducive to solid-state stacking between molecules, is conducive to injection and migration of excitons, can effectively reduce the driving voltage of an organic electroluminescent device when used as an electron transport material, improves the light-emitting efficiency of the organic electroluminescent device, and prolongs the service life of the organic electroluminescent device. Meanwhile, the cyano substitution can adjust the energy level of the compound, the HOMO and LUMO energy levels are deepened, the compound is more matched with adjacent layers, and the device voltage is reduced. The application further provides an organic electroluminescent device and a display device containing the compound of formula (I).

The application provides a compound of formula (I), the bond energy between atoms is high, the compound has good thermal stability, and the solid-state stacking between molecules is favorable, and the energy level between adjacent layers is suitable, which is favorable for the injection and migration of excitons. When used as an electron transport material, the compound can effectively reduce the driving voltage of an organic electroluminescent device, improve the light-emitting efficiency of the organic electroluminescent device, and prolong the service life of the organic electroluminescent device. The application also provides an organic electroluminescent device and a display device comprising the compound of formula (I).

The application provides a compound having a structure shown in formula (I). The compound has a parent structure of an ortho-disubstituted pyridine fragment, has a large conjugate plane, high bond energy between atoms, and has a suitable energy level between adjacent layers when used as an electron transport material and / or a charge generation material, is beneficial to electron injection and migration, can effectively reduce a driving voltage, and has a high electron migration rate, thereby improving the light-emitting efficiency of an organic electroluminescent device. The compound is used as an electron transport material and / or a charge generation material in the organic electroluminescent device, so that the driving voltage of the organic electroluminescent device is reduced, the light-emitting efficiency of the organic electroluminescent device is improved, and the service life of the organic electroluminescent device is prolonged.

This application provides a compound containing dibenzoquinoxaline, the structure of which is shown in formula (I). It has a parent structure substituted with dibenzoquinoxaline, exhibiting efficient charge generation and charge transport properties. When used as a charge generation material, it can effectively improve the luminous efficiency of organic light-emitting devices (OLEDs), reduce the driving voltage of OLEDs, and minimize voltage fluctuations under constant current conditions. This can delay the aging of OLEDs, improve their operating efficiency, and extend their lifespan. This application also provides an organic light-emitting device and a display device comprising the above compound.

The application provides a substituted spirobifluorene compound and an organic electroluminescent device comprising the same. The structural formula of the substituted spirobifluorene compound is shown in formula (I). The bond energy between atoms is high, the substituted spirobifluorene compound has good thermal stability, and is conducive to the solid-state stacking of molecules. When the substituted spirobifluorene compound is used as an electron transport material, the substituted spirobifluorene compound has suitable energy level between adjacent layers, is conducive to the injection and migration of electrons, can effectively reduce the driving voltage of the organic electroluminescent device, has a high electron migration rate, improves the luminous efficiency of the organic electroluminescent device, can keep high molecular rigidity, improves the glass transition temperature of the material, improves the thermal stability, and prolongs the service life of the organic electroluminescent device. The application also provides an organic electroluminescent device and a display device comprising the substituted spirobifluorene compound shown in formula (I).