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Method Of Manufacturing Organic El Element, Organic El Element, Organic El Apparatus, And Electronic Device

一种制造方法、有机的技术，应用在半导体/固态器件制造、电气元件、照明装置等方向，能够解决发光效率、发光寿命差等问题

Active Publication Date: 2015-03-18
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is known that high-molecular materials sometimes have inferior luminous efficiency and luminous lifetime compared with low-molecular materials.

Method used

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  • Method Of Manufacturing Organic El Element, Organic El Element, Organic El Apparatus, And Electronic Device
  • Method Of Manufacturing Organic El Element, Organic El Element, Organic El Apparatus, And Electronic Device
  • Method Of Manufacturing Organic El Element, Organic El Element, Organic El Apparatus, And Electronic Device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0055] First, refer to Figure 1 ~ Figure 3 An organic EL device to which the organic EL element of this embodiment is applied will be described. figure 1 is an equivalent circuit diagram showing the electrical configuration of an organic EL device, figure 2 It is a schematic plan view showing the structure of an organic EL device, image 3 It is a schematic cross-sectional view showing the structure of a pixel of an organic EL device.

[0056] like figure 1 As shown, the organic EL device 100 of this embodiment has a plurality of scanning lines 112 and a plurality of data lines 113 intersecting each other, and a power supply line 114 parallel to each of the plurality of data lines 113 . It has a scanning line driving circuit 103 connected to a plurality of scanning lines 112 and a data line driving circuit 104 connected to a plurality of data lines 113 . In addition, there are a plurality of light-emitting pixels 107 arranged in a matrix corresponding to intersections of...

no. 2 Embodiment approach

[0118]

[0119] Next, refer to Figure 8 An organic EL device according to a second embodiment of the organic EL element of the present invention will be described. Figure 8 It is a schematic cross-sectional view showing the structure of the organic EL element in the organic EL device of the second embodiment. The organic EL device according to the second embodiment differs from the organic EL device 100 according to the above-mentioned first embodiment in that the configuration of the organic EL elements provided for each light-emitting pixel 107R, 107G, and 107B is different. The same reference numerals are assigned to the same configurations as those of the organic EL device 100 described above, and detailed description thereof will be omitted.

[0120] like Figure 8 As shown, the organic EL device 200 of this embodiment has an organic EL element 230R capable of obtaining red light emission, an organic EL element 230G capable of obtaining green light emission, and an ...

Embodiment 1

[0134] In the method of manufacturing the organic EL element 230B of Example 1, first, in the film formation region surrounded by the partition walls 133, PEDOT / PSS water dispersion at a concentration of 1 wt% was applied by the droplet discharge method. solution. After the applied PEDOT / PSS aqueous dispersion solution is dried, heat treatment is performed in the air atmosphere to form a hole injection layer 232 a made of PEDOT / PSS with a thickness of about 50 nm on the pixel electrode 231B.

[0135] Next, prepare to mix α-NPD as a hole-transporting material of a low-molecular material and polyvinylcarbazole (PVK) as a high-molecular material with 0.5 wt. The functional liquid (ink) contained in the concentration of 70%. like Figure 9As shown, the mixing ratio of α-NPD was 10 wt%, and the mixing ratio of PVK was 90 wt% with respect to the total solid weight. In addition, the weight average molecular weight of PVK is about 10,000. The boiling point (bp) of tetralin as a ...

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PUM

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Abstract

An organic EL element with a functional layer including at least a hole injection layer, a hole transport layer, and a luminescence layer laminated from a pixel electrode side in order between a pixel electrode as an anode and a counter electrode as a cathode, and a method of manufacturing the organic EL element has a forming process by applying a solution including a low molecular material and a high molecular material to at least one layer among the hole injection layer, the hole transport layer, and luminescence layer, in which the molecular weight of low molecular material is 10,000 or less and the molecular weight of high molecular material is 10,000 to 300,000, and in which a mixing ratio of low molecular material is 10 wt % to 90 wt % with respect to the weight of low molecular material and high molecular material included in the solution.

Description

technical field [0001] The present invention relates to a method for manufacturing an organic EL element, an organic EL element, an organic EL device including the organic EL element, and electronic equipment. Background technique [0002] An organic electroluminescent (Electro-Luminescence; EL) element has a functional layer containing a light-emitting material made of an organic compound between an anode and a cathode. As a method of forming such a functional layer, there are known gas phase processes such as vacuum evaporation (also called a dry process), and liquid phase processes using a solution obtained by dissolving or dispersing a functional layer forming material in a solvent (also called a dry process). For wet method or coating method). In general, low-molecular materials are suitably used in gas-phase processes, and high-molecular materials are used in liquid-phase processes from the viewpoint of film-forming properties. It is known that high-molecular materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/10H05B33/20H01L51/56H01L51/50
CPCH01L51/56H01L51/5012H01L51/5056H01L51/0003H01L51/5088H10K59/35H10K59/12H10K71/135H10K71/16H10K85/1135H10K85/141H10K85/631H10K85/324H10K50/11H10K50/155H10K50/171H10K50/16H10K71/164H10K71/00
Inventor 佐合拓己渡边昭太朗田边诚一石田纮平
Owner SEIKO EPSON CORP