Hole material, OLED display panel containing same and electronic device

A technology for display panels and hole injection materials, applied in circuits, electrical components, electrical solid devices, etc., to achieve the effects of excellent electrochemical stability, high carrier transport rate, and high hole transport rate

Inactive Publication Date: 2019-07-16
EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are still some problems in the existing OLED devices that need to be improved, such as: improving the efficiency of OLED devices; improving the life of OLED devices; reducing the operating voltage of OLED devices, etc.

Method used

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  • Hole material, OLED display panel containing same and electronic device
  • Hole material, OLED display panel containing same and electronic device
  • Hole material, OLED display panel containing same and electronic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A compound HT1 A preparation method comprising the steps of:

[0049]

[0050] The synthesis conditions are:

[0051] In a 200mL two-necked bottle, add 1.38g bis-ferrocene boric acid, 4g anhydrous K 3 PO 4 powder, 3.5g bromotriphenylamine, 100mL anhydrous 1,4-dioxane, blow nitrogen for 30min, then add 0.15g Pd(PPh 3 ) 4 , Reflux reaction at 101°C for 24h in the dark. The device was cooled to room temperature, a large amount of water was added, and then the solid was filtered out, dried and recrystallized five times with 1,4-dioxane, and then sublimated to obtain 1.6 g of a tan solid (48% yield).

[0052] Characterization data:

[0053] Tg(DSC) 126°C, purity 99.9%;

[0054] 1 H NMR (400MHz, DMSO) δ7.23(d, 4H), 7.01(m, 8H), 6.62(d, 4H), 6.52(d, 4H), 6.46(m, 8H), 4.30(m, 4H) , 4.17(m,4H).

Embodiment 2

[0056] A compound HT2 A preparation method comprising the steps of:

[0057]

[0058] The synthesis conditions are the same as in Example 1, the yellowish brown solid has a yield of 43%.

[0059] Characterization data: Tg(DSC) 128°C, purity 99.9%;

[0060] 1 H NMR(400MHz,DMSO)δ7.55(d,4H),7.50(d,4H),7.40(d,4H),7.30(d,4H),7.08(m,4H),6.98(m,4H) ,4.27(m,4H),4.15(m,4H).

Embodiment 3

[0062] A compound HT3 A preparation method comprising the steps of:

[0063]

[0064] The synthesis conditions are the same as in Example 1, the yellowish brown solid has a yield of 45%.

[0065] Characterization data: Tg(DSC) 124°C, purity 99.9%;

[0066] 1 H NMR (400MHz,DMSO)δ7.23(d,4H),6.82-6.81(m,8H),6.52(d,4H),6.50(m,4H),6.34(d,4H),4.26(m, 4H), 4.13(m,4H), 3.80(s,4H).

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PUM

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Abstract

The invention relates to a hole material. The hole material comprises a compound of a structure represented by a formula (I). The hole material has a high transport speed of holes or carriers and excellent electrochemical stability. When the hole material is used as the hole transport material of an OLED, the transport speed of holes and carriers can be improved, the obtained product can be used as a hole injecting material after the hole material is doped with a doping material, and more holes can be obtained; and the device voltage can be reduced, and the efficiency and service life of the device are improved.

Description

technical field [0001] The invention belongs to the field of preparation of organic light-emitting diodes, and in particular relates to a phosphalocene compound, a hole-blocking material containing it, an electron-transporting material, an OLED display panel and electronic equipment. Background technique [0002] An OLED display is a display made of organic light-emitting diodes. Due to its self-illumination, high contrast ratio, thin thickness, fast response speed, flexible panel, and simple structure, it is considered to be the next generation of flat-panel display technology. The structure of OLED devices is generally: cathode (Cathode) / electron injection layer (EIL) / electron transport layer (ETL) / light emitting layer (EML) / hole transport layer (HTL) / hole injection layer (HIL) / anode ( Anode). [0003] There are still some problems to be improved in the existing OLED devices, such as: improving the efficiency of the OLED device; increasing the lifespan of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F17/02H01L51/50H01L51/54
CPCC07F17/02H10K85/331H10K50/15H10K50/17
Inventor 谭奇
Owner EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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