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Material for light-emitting apparatus and electron transport layer, organic compound, light-emitting apparatus, light-emitting device, electronic equipment, and lighting device

A technology of organic compounds and light-emitting devices, applied in the fields of light-emitting materials, organic chemistry, electric solid-state devices, etc.

Pending Publication Date: 2021-10-29
SEMICON ENERGY LAB CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Compared with light-emitting devices with existing structures, light-emitting devices with this structure can have higher light extraction efficiency and external quantum efficiency, but it is difficult to integrate such light-emitting devices without adversely affecting other important characteristics of light-emitting devices. A layer with a low refractive index is formed inside the EL layer

Method used

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  • Material for light-emitting apparatus and electron transport layer, organic compound, light-emitting apparatus, light-emitting device, electronic equipment, and lighting device
  • Material for light-emitting apparatus and electron transport layer, organic compound, light-emitting apparatus, light-emitting device, electronic equipment, and lighting device
  • Material for light-emitting apparatus and electron transport layer, organic compound, light-emitting apparatus, light-emitting device, electronic equipment, and lighting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0183] 1,1-bis-(4-bis(4-methyl-phenyl)-amino -phenyl)-cyclohexane (abbreviation: TAPC). When a material with a low refractive index is used for the EL layer, the external quantum efficiency of the light-emitting device can be improved, so it is expected that a light-emitting device with a good external quantum efficiency can be obtained by using TAPC. However, since TAPC has a low glass transition point, it has a problem with heat resistance. In addition, TAPC can flow holes, but substantially cannot flow electrons.

[0184] Note that, in order to obtain a material with a low refractive index, it is preferable to introduce an atom having a low atomic refraction or a substituent having a low molecular refraction into the molecule. Examples of substituents having low molecular refraction include saturated hydrocarbon groups, cyclic saturated hydrocarbon groups, and the like.

[0185] In general, the carrier transport property and the refractive index have a trade-off relation...

Embodiment approach 2

[0358] Figure 1A It is a figure which shows the light emitting device of one form of this invention. A light-emitting device according to one embodiment of the present invention includes a first electrode 101, a second electrode 102, and an EL layer 103 using the material for an electron transport layer or the organic compound described in Embodiment 1.

[0359] The EL layer 103 includes a light emitting layer 113 and may further include a hole injection layer 111 and / or a hole transport layer 112 . The light-emitting layer 113 contains a light-emitting material, and the light-emitting device according to one embodiment of the present invention emits light from the light-emitting material. The light emitting layer 113 may also contain host materials and other materials. The electron transport layer material described in Embodiment Mode 1 is contained in the electron transport layer 114 and / or the electron injection layer 115 . The organic compound described in Embodiment Mo...

Embodiment approach 3

[0438] In this embodiment mode, a light-emitting device using the light-emitting device described in Embodiment Mode 2 will be described.

[0439] In this embodiment, refer to Figure 2A and Figure 2B A light-emitting device manufactured using the light-emitting device described in Embodiment Mode 2 will be described. Notice, Figure 2A is a top view showing a light emitting device, and Figure 2B is along Figure 2A A cross-sectional view cut along line A-B and line C-D in . This light-emitting device includes a driver circuit unit (source line driver circuit) 601 , a pixel unit 602 , and a driver circuit unit (gate line driver circuit) 603 indicated by dotted lines as a unit for controlling light emission of the light-emitting device. In addition, reference numeral 604 is a sealing substrate, reference numeral 605 is a sealing material, and the inside surrounded by the sealing material 605 is a space 607 .

[0440] Note that the lead wiring 608 is a wiring for transmi...

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Abstract

Provided is a material for a light emitting apparatus having a low refractive index. The material for the light emitting apparatus contains an organic compound having a pyridine skeleton, a diazine skeleton, or a triazine skeleton in which the ratio of carbon atoms bonded to the sp3 hybrid orbital is within a prescribed range. The material for the light emitting apparatus includes an organic compound in which a heteroaromatic ring including at least one six-membered ring including one to three nitrogen atoms, a plurality of aromatic hydrocarbon rings having 6 to 14 ring-forming carbon atoms, at least two of the plurality of aromatic hydrocarbon rings being benzene rings, and a plurality of hydrocarbon groups bonded in an sp3 hybrid orbital are included. The layer comprising the organic compound has an ordinary light refractive index of 1.5 or more and 1.75 or less with respect to light having an arbitrary wavelength in the range of 455 nm or more and 465 nm or less.

Description

technical field [0001] One aspect of the present invention relates to an organic compound, a light-emitting device, a display module, a lighting module, a display device, a light-emitting device, electronic equipment, a lighting device, and an electronic device. Note that one aspect of the present invention is not limited to the technical fields described above. The technical field of one aspect of the invention disclosed in this specification etc. relates to an object, a method, or a manufacturing method. Moreover, one aspect of this invention relates to a process (process), a machine (machine), a product (manufacture), or a composition (composition of matter). Therefore, more specifically, examples of the technical field of one aspect of the present invention disclosed in this specification include semiconductor devices, display devices, liquid crystal display devices, light emitting devices, lighting devices, power storage devices, and storage devices. , an imaging device...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D239/26C07D251/24H01L51/54H01L51/50
CPCC07D251/24C07D239/26H10K85/60H10K85/654H10K50/16C09K11/06C07D401/10C07D401/14H10K50/858C09K2211/1018C09K2211/1007H10K50/11H10K2101/10
Inventor 鸟巢桂都河野优太门间裕史尾坂晴惠成川辽植田蓝莉渡部刚吉大泽信晴濑尾哲史
Owner SEMICON ENERGY LAB CO LTD
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