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Imidazole ring-containing compound and organic electroluminescence display device

A compound and display technology, which is applied in the field of blue fluorescent main compound and organic EL display, can solve problems such as unsuitable for commercial use, low glass transition temperature, short service life, etc.

Inactive Publication Date: 2008-12-10
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, this organic EL device has only a short lifetime of 150 hours, and is not suitable for commercial use because CBP has a low glass transition temperature of 110 °C and is easy to crystallize.

Method used

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  • Imidazole ring-containing compound and organic electroluminescence display device
  • Imidazole ring-containing compound and organic electroluminescence display device
  • Imidazole ring-containing compound and organic electroluminescence display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Embodiment 1: the preparation of organic EL display

[0084] Set the resistance to 15Ω / cm 2 The indium tin oxide (ITO) glass substrate (obtained from Coming Co.) was cut into a size of 50 mm × 50 mm × 0.7 mm, ultrasonically cleaned in isopropanol, and then cleaned in pure water for 5 minutes each time , cleaned with UV ozone for another 30 minutes, and used as the anode.

[0085] Formed on the anode with a thickness of The hole injection layer of IDE 406 (obtained from Idemitsu Co.). Next, a layer with a thickness of The hole transport layer formed by 4,4'-bis[N-(1-naphthyl)-N-phenylamino]biphenyl (NPB).

[0086] Formed on the hole transport layer with a thickness of The electroluminescent layer formed by the compound (I-1). Next, a thickness of Electron transport layer of Alq3. LiF and Al are sequentially and Thickness of 2000 is deposited on the electron transport layer by vacuum deposition method to form the electron injection layer and cathode, s...

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Abstract

The present invention provides an imidazole ring-containing compound and an organic electroluminescence (EL) display using the compound. The imidazole ring-containing compound has strong blue fluorescence and hole transport properties, and can be used as a host for blue fluorescent materials and phosphorescent and fluorescent dopants of various colors such as red, green, blue, white, and the like. In addition, the organic EL display prepared using the imidazole ring-containing compound has high luminous efficiency and consumes less energy.

Description

[0001] This application claims priority from Korean Patent Application 2003-70988 filed with the Korean Intellectual Property Office on October 13, 2003, which is hereby incorporated by reference in its entirety. technical field [0002] The present invention relates to a compound containing an imidazole ring and an organic electroluminescence (EL) display using the compound, more specifically, a blue fluorescent host compound and an organic EL display using the compound. Background technique [0003] A typical organic EL display contains an anode on the upper surface of the substrate. A hole transport layer, an electroluminescent layer, an electron transport layer, and a cathode are sequentially formed on the anode. The hole transport layer, electroluminescent layer and electron transport layer are thin films made of organic compounds. [0004] The organic EL display having the above structure operates according to the following principle. When a voltage is applied betwee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D403/08C07D471/04C07D513/04C07D519/00C09K11/06H05B33/20H01L51/50H05B33/14
CPCC07D519/00C09K11/06C09K2211/1033C09K2211/1037C09K2211/104C09K2211/1044H05B33/14
Inventor 李锡宗金荣国金喜妍黄皙焕梁承珏都永洛宋主翰
Owner SAMSUNG DISPLAY CO LTD