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Film-forming ink, film-forming method, method of manufacturing light emitting element, light emitting element, light emitting device, and electronic apparatus

A light-emitting element and manufacturing method technology, applied in the direction of electroluminescent light source, semiconductor/solid-state device manufacturing, ink, etc., can solve the problems of insufficient wetting and diffusion, deterioration of light-emitting element characteristics, large contact angle, etc., and achieve storage stability Excellent, excellent storage stability and desolvability, and the effect of preventing deterioration of properties

Active Publication Date: 2013-06-26
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In addition, film-forming inks using conventional non-aqueous solvents or dispersion media have large contact angles (i.e., low wettability) with respect to hole injection layers formed using aqueous solvents or dispersion media, resulting in insufficient wettability. The problem of moisture diffusion
[0011] In Patent Document 1, in order to avoid the above-mentioned problems, a surfactant is added to a solvent or a dispersion medium, but it is not practical because the surfactant remaining in the obtained film deteriorates the characteristics of the light-emitting device.

Method used

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  • Film-forming ink, film-forming method, method of manufacturing light emitting element, light emitting element, light emitting device, and electronic apparatus
  • Film-forming ink, film-forming method, method of manufacturing light emitting element, light emitting element, light emitting device, and electronic apparatus
  • Film-forming ink, film-forming method, method of manufacturing light emitting element, light emitting element, light emitting device, and electronic apparatus

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no. 1 approach

[0072] Light emitting element

[0073] figure 1 It is a figure which schematically shows the vertical cross-section of the light-emitting element of this invention. It should be explained that, for the convenience of explanation, the following figure 1 The upper side among them will be described as "upper" and the lower side as "lower".

[0074] figure 1 The light-emitting element (electroluminescent element) 1 shown emits light from R (red), G (green), and B (blue) to emit white.

[0075] This light-emitting element 1 is between the anode 3 and the cathode 12, according to the hole injection layer 4, the hole transport layer 5, the red light-emitting layer (first light-emitting layer) 6, the first intermediate layer 7A, the blue light-emitting layer ( The second light emitting layer) 8 , the second intermediate layer 7B, the green light emitting layer (third light emitting layer) 9 , the electron transport layer 10 , and the electron injection layer 11 are laminated in th...

no. 2 approach

[0296] In the second embodiment, unlike the first embodiment, the light-emitting elements may be formed as elements that emit red, green, and blue colors, respectively.

[0297]

[0298] Next, refer to Figure 8 and Figure 9 A light-emitting device including a light-emitting element produced by applying the method for producing a light-emitting element according to this embodiment will be described. Figure 8 is a schematic plan view showing the configuration of the light emitting device according to the present embodiment, Figure 9 It is a schematic sectional view of main parts showing the configuration of the light emitting device according to the present embodiment.

[0299] Such as Figure 8 As shown, the organic EL device 240 of the present embodiment includes an element substrate 201 including three-color light-emitting pixels 207 of R (red), G (green), and B (blue), and are opposed to each other at predetermined intervals on the element substrate 201 . configure...

Embodiment 1

[0370] Next, specific examples of the present invention will be described.

[0371] 1. Preparation of Liquid Medium

[0372] Liquid media (solvents) of the following samples No. 1-1 to No. 1-41 were prepared.

[0373] Sample No.1-1

[0374] With respect to 1,4-dimethylnaphthalene (bp: 268): 90 parts by mass, a compound represented by the above formula (I) (n=0, R 1 The number of carbon atoms = 2, R 2 carbon number = 2) of diethyl ether (bp: 34.6°C): 10 parts by mass of a mixed solvent

[0375] Sample No.1-2

[0376] With respect to 1,4-dimethylnaphthalene (bp: 268): 90 parts by mass, a compound represented by the above formula (I) (n=0, R 1 The number of carbon atoms = 2, R 2 carbon number = 3) ethyl propyl ether (bp: 62°C): 10 parts by mass of a mixed solvent

[0377] Sample No.1-3

[0378] With respect to 1,4-dimethylnaphthalene (bp: 268): 90 parts by mass, a compound represented by the above formula (I) (n=0, R 1 The number of carbon atoms = 3 (branch), R 2 Diisop...

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Abstract

A film-forming ink according to an embodiment of the invention includes a film-forming material; and a liquid medium which dissolves or disperses the film-forming material, in which the liquid medium contains an ether compound represented by Formula (I).

Description

technical field [0001] The present invention relates to a film-forming ink, a film-forming method, a method for producing a light-emitting element, a light-emitting element, a light-emitting device, and electronic equipment. Background technique [0002] An organic electroluminescence element (organic EL element) is a light-emitting element having a structure in which at least one light-emitting organic layer (light-emitting layer) is inserted between an anode and a cathode. In this light-emitting element, by applying an electric field between the cathode and the anode, electrons are injected from the cathode side into the light-emitting layer while holes are injected from the anode side into the light-emitting layer, and the electrons and holes recombine in the light-emitting layer to form Excitons are generated, and when the excitons return to the ground state, their energy is released in the form of light. [0003] Generally, in an organic EL element, a hole injection la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/02H01L51/50H01L51/54H05B33/14
CPCH10K71/15H10K71/135H10K85/146H10K85/115H10K85/151H10K85/1135H10K85/342H10K50/15H10K2102/103H10K71/00H10K71/164H10K50/16H10K59/1201H10K50/00
Inventor 渡边昭太朗泷口宏志
Owner SEIKO EPSON CORP
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