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Organic complex and organic electroluminescent display device employing same

A technology for display devices and organic light-emitting layers, applied in the field of materials used as hole transport layers, can solve the problems of material decomposition and cracking, taking a long time, and decreasing yield of sublimation purification

Active Publication Date: 2006-10-04
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the known phosphorescent materials have the disadvantage of being difficult to purify by sublimation during preparation, which causes the purification process to take a long time (more than 10 days for some materials), and may also cause decomposition and cracking of the material during the long purification process , resulting in a substantial decrease in the yield of sublimation purification
Generally, the yield of known phosphorescent materials is only about 30-40%.

Method used

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  • Organic complex and organic electroluminescent display device employing same
  • Organic complex and organic electroluminescent display device employing same
  • Organic complex and organic electroluminescent display device employing same

Examples

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no. 1 example

[0088] figure 2 is a schematic diagram showing the organic electroluminescence display device of the first embodiment of the present invention. Wherein, the metal complex A (Ir-ppz1) is used as the dopant of the light-emitting layer in the display device.

[0089] Such as figure 2 As shown, the organic electroluminescence device 20 mainly includes an anode (anode) 21 , an organic light emission layer (light emission layer, EML) 25 and a cathode (cathode) 29 . The anode 21 is, for example, coated with a layer of transparent and conductive indium tin oxide (ITO) 212 on the glass substrate 211 . The cathode 29 is, for example, a composite metal layer composed of lithium fluoride (LiF) and aluminum (Al). A hole injection layer (hole injection layer, HIL) 22 and a hole transport layer (hole transfer layer, HTL) 23 are further included between the organic light emitting layer 25 and the anode 21, and an electron transport layer is further included between the organic light emit...

no. 2 example

[0103] Figure 9 A schematic diagram showing an organic electroluminescent display device according to a second embodiment of the present invention. Wherein, the metal complex A (Ir-ppz1) is used as the material of the electron blocking layer (electron blocking layer, EBL) between the light emitting layer and the hole transport layer.

[0104] Such as Figure 9 As shown, the organic electroluminescent device 90 mainly includes an anode 91 , an organic light emitting layer (EML) 95 and a cathode 99 . The anode 91 is, for example, coated with a layer of transparent and conductive indium tin oxide (ITO) 912 on a glass substrate 911 . The cathode 99 is, for example, a composite metal layer composed of lithium fluoride (LiF) and aluminum (Al). A hole injection layer (HIL) 92 , a hole transport layer (HTL) 93 and an electron blocking layer 94 are further included between the organic light emitting layer 95 and the anode 91 . An electron transport layer (ETL) 97 and an electron i...

no. 3 example

[0152] Please refer to the schematic diagram of the organic electroluminescent display device of the third embodiment of the present invention figure 2 . Such as figure 2 As shown, the organic electroluminescent device 20 mainly includes an anode 21 , an organic light emission layer (light emission layer, EML) 25 and a cathode 29 . The anode 21 is, for example, coated with a layer of transparent and conductive indium tin oxide (ITO) 212 on the glass substrate 211 . The cathode 29 is, for example, a composite metal layer composed of lithium fluoride and aluminum (Al). A hole injection layer (hole injection layer, HIL) 22 and a hole transport layer (hole transfer layer, HTL) 23 are further included between the organic light emitting layer 25 and the anode 21, and an electron transport layer is further included between the organic light emitting layer 25 and the cathode 29 (electron transfer layer, ETL) 27 and electron injection layer (electron injection layer, EIL) 28 . Th...

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Abstract

Disclosed is a metallic complex represented by formula (I), wherein M is transient metal with atomic number greater than 40, m is dentate number not greater than M, n is an positive integer less than m, R1, R2, R3, A are selected from halogen atoms, cyano, phenyl, heterocyclic radical, trifluoromethyl, substituted or unsubstituted alkyl with number of carbon atoms not greater than 30, substituted or unsubstituted alkoxy, hydroxyl, mercapto with number of carbon atoms not greater than 30, substituted or unsubstituted alkene with number of carbon atoms in the range of 2 to 30, substituted or unsubstituted hydrocarbons and haloalkyl with number of carbon atoms in the range of 6 to 30, Y1 is atom groups containing nitrogen heterocycle.

Description

technical field [0001] The present invention relates to a metal complex and an organic electroluminescent display device using it, and in particular to a dopant that can be used as a dopant for the light-emitting layer in a display device, or as a light-emitting layer and a hole transport layer The metal complex of the electron blocking layer between them, or the material used as the hole transport layer, can effectively improve the electrical properties, luminous efficiency and enhance the device performance of the device. Background technique [0002] In recent years, organic electroluminescent display devices have grown rapidly, and transition metal complexes have been widely used in electroluminescent materials. In the organic light-emitting layer, the light-emitting materials can be divided into fluorescent and phosphorescent forms, and the luminous efficiency of phosphorescence is about three times that of fluorescence. Phosphorescence generally exists in the form of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C07F13/00C09K11/06
Inventor 吴珮琪柯崇文
Owner AU OPTRONICS CORP
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