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Phosphorescence host compound and organic electroluminescence device using same

A phosphorescent subject and compound technology, applied in the field of OLED devices, can solve the problems of complex manufacturing process, increased production cost, and lack of solubility, etc., and achieve the effects of prolonged durability, excellent color purity and brightness

Active Publication Date: 2019-04-09
ZHEJIANG HUADISPLAY OPTOELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these compounds do not have ideal solubility in solvents and thus cannot be used to form the light-emitting layer by solution process
The light-emitting layer should be formed by a deposition process, so the manufacturing process is extremely complicated and the process efficiency is extremely low
In addition, the waste in the deposition process is very high, resulting in increased production costs

Method used

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  • Phosphorescence host compound and organic electroluminescence device using same
  • Phosphorescence host compound and organic electroluminescence device using same
  • Phosphorescence host compound and organic electroluminescence device using same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0084] The ITO glass substrate was patterned to have a light emitting area of ​​3 mm x 3 mm. Then, the patterned ITO glass substrate was washed.

[0085] The substrate is then placed in a vacuum chamber. The standard pressure setting is 1×10 -6 support. After that, on the ITO substrate with

[0086] and The sequence forms layers of organic matter.

[0087] At 0.9mA, the brightness is equal to 1237cd / m 2 (5.8V). At this time, CIEx=0.659, y=0.330.

no. 2 approach

[0089] The ITO glass substrate was patterned to have a light emitting area of ​​3 mm x 3 mm. Then, the patterned ITO glass substrate was washed.

[0090] The substrate is then placed in a vacuum chamber. The standard pressure setting is 1×10 -6 support. After that, on the ITO substrate with

[0091] and The sequence forms layers of organic matter.

[0092] At 0.9mA, the brightness is equal to 1184cd / m 2 (5.9V). At this time, CIEx=0.660, y=0.329.

no. 3 approach

[0094] The ITO glass substrate was patterned to have a light emitting area of ​​3 mm x 3 mm. Then, the patterned ITO glass substrate was washed.

[0095] The substrate is then placed in a vacuum chamber. The standard pressure setting is 1×10 -6 support. After that, on the ITO substrate with

[0096] and The sequence forms layers of organic matter.

[0097] At 0.9mA, the brightness is equal to 1259cd / m 2 (5.9V). At this time, CIEx=0.659, y=0.329.

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PUM

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Abstract

The invention relates to a phosphorescence host compound and an organic electroluminescence device using the compound. The structure formula of the phosphorescence host compound is expressed as a formula I which is as shown in the specification. In the structure formula I, Z is independently selected from the following structures expressed as formulae which are as shown in the specification, whereAr is independently selected from one of C6-C30 aryl and C2-C30 heteroaryl. The phosphorescence host compound with a chemical formula expressed as the formula I can be used as a host material of a light-emitting layer of an organic light-emitting diode device which is an organic electroluminescence device, and has excellent color purity and brightness and prolonged durability.

Description

technical field [0001] The present invention relates to a phosphorescent host compound and an organic electroluminescent device using the compound. More specifically, it relates to a soluble phosphorescent host compound having excellent color purity and high luminance and luminous efficiency, and an OLED device using the same. Background technique [0002] Recently, demand for flat panel displays such as liquid crystal displays and plasma display panels is increasing. However, these flat panel displays have slower response times and narrower viewing angles than cathode ray tubes (CRTs). [0003] Organic Light Emitting Diode (OLED) devices are one of the next-generation flat panel displays that can solve the above problems and occupy a smaller footprint. [0004] Components of an OLED device can be formed on a flexible substrate, such as a plastic substrate. In addition, OLED devices have advantages in viewing angle, driving voltage, power consumption and color purity. On...

Claims

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Application Information

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IPC IPC(8): C07F7/08C09K11/06H01L51/54
CPCC09K11/06C07F7/0816C09K2211/1096C09K2211/1044C09K2211/1059H10K85/622H10K85/615H10K85/654H10K85/6572H10K85/40
Inventor 郑贤哲黄东华万鸣全美子赵晓宇
Owner ZHEJIANG HUADISPLAY OPTOELECTRONICS CO LTD
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