Antioxidant for thin film encapsulation, composition and application of composition

A thin-film encapsulation and antioxidant technology, which is applied in the field of thin-film encapsulated antioxidants and compositions, can solve the problems of decreased flatness of inorganic films, adverse effects of devices, and rises.

Active Publication Date: 2021-03-23
JILIN OPTICAL & ELECTRONICS MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the currently used inorganic films are evaporated by plasma generation methods such as sputtering (sputtering) or vapor deposition (CVD). When there are many impurities in the organic film, the residual gases will be released, causing The flatness of the inorganic film decreases, resulting in an increase in the Water Vapor Transmission Rate (WVTR), which adversely affects the protected device

Method used

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  • Antioxidant for thin film encapsulation, composition and application of composition
  • Antioxidant for thin film encapsulation, composition and application of composition
  • Antioxidant for thin film encapsulation, composition and application of composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This antioxidant embodiment provides a kind of antioxidant for film encapsulation, and its synthetic route is as follows:

[0045]

[0046] Concrete, the preparation method of this antioxidant comprises the following steps:

[0047] Add 78 g of 3',5'-bis(2-aminoethyl)-3,5-di-tert-butyl-4-biphenol and 66 g of isocyanate methyl methacrylate to dissolve in 300 mL of toluene, and add 0.6 g Dibutyltin dilaurate was stirred while heating at 60° C. for 4 hours; then, the temperature was cooled to room temperature, and the solvent was removed using a vacuum distiller to obtain 106 g of an antioxidant. The structural formula of this antioxidant is as follows:

[0048]

[0049] This antioxidant is detected and analyzed, and the specific results are as follows:

[0050] HPLC purity: greater than 90%.

[0051] Mass spectrum: calculated value 650.82; found value 650.03.

[0052] Elemental analysis:

[0053] Calculated values: C: 66.44%; H: 7.74%; N: 8.61%; O: 17.21%.

[...

Embodiment 2

[0056] This antioxidant embodiment provides a kind of antioxidant for film encapsulation, and its synthetic route is as follows:

[0057]

[0058] Concrete, the preparation method of this antioxidant comprises the following steps:

[0059] Add 83 g of 3',5'-bis(2-aminoethyl)-3,5-di-tert-butyl-4-biphenol and 61 g of isocyanate methyl methacrylate to dissolve in 300 mL of toluene, and add 0.6 g Dibutyltin dilaurate was stirred while heating at 60° C. for 4 hours; then, the temperature was cooled to room temperature, and the solvent was removed using a vacuum distiller to obtain 106 g of an antioxidant. The structural formula of this antioxidant is as follows:

[0060]

[0061] This antioxidant is detected and analyzed, and the specific results are as follows:

[0062] HPLC purity: greater than 90%.

[0063] Mass Spectrum: Calculated 652.79; Tested 651.68.

[0064] Elemental analysis:

[0065] Calculated: C: 66.24%; H: 7.41%; N: 4.29%; O: 22.06%.

[0066] The test val...

Embodiment 3

[0078] This composition example provides a composition for film encapsulation, and its preparation method includes the following steps: 0.5g of the antioxidant provided in the above antioxidant example 1, 99g of 2-phenoxyethyl acrylic acid, 0.5 g of 2,2'-diethoxyacetophenone was put into the reactor and stirred for 30 minutes, and then filtered through a 0.45 μm Teflon filter to obtain a composition for film encapsulation.

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Abstract

The invention is applicable to the technical field of thin film packaging structures, and provides an antioxidant for thin film encapsulation, a composition and application of the composition. The structural general formula of the antioxidant is shown in the specification, in the formula, R1, R2, R5 and R6 are independently one of substituted or unsubstituted alkylene of C1 to C20 and substitutedor unsubstituted arylene of C6 to C30; R3 and R4 are independently one of hydrogen, substituted or unsubstituted alkyl groups of C1 to C20, and substituted or unsubstituted aryl groups of C6 to C30 and are same or different; and X1, X2, X3 and X4 are independently one of O, S and substituted or unsubstituted NH. The antioxidant provided by the invention has propenyl with a plurality of photocuringgroups, can optimize the water vapor transmission rate of a packaging film, and reduces miscellaneous gas emission after film formation, so that the service life of the packaging film structure of the organic light emitting device can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of thin-film packaging structures, and in particular relates to an antioxidant for thin-film packaging, a composition and an application thereof. Background technique [0002] An organic light-emitting diode (OLED) display consists of a hole-injecting electrode (anode), an organic light-emitting layer, and an electron-injecting electrode (cathode). The organic light emitting device is generally attached on a substrate made of glass and covered by another substrate to prevent deterioration due to the influence of moisture or oxygen introduced from the outside. Currently, organic light-emitting display devices are becoming thinner and thinner according to consumers' demands. In organic light-emitting display devices, in order to solve this problem, a thin film encapsulation (Thin Film Encapsulation, TFE) structure is adopted. [0003] The thin-film encapsulation structure is to alternately stack at least one ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C275/24C07C271/20C07C273/18C07C269/02C09D4/02H01L51/52
CPCC07C275/24C07C271/20C07C273/1827C07C269/02C09D4/00H10K50/84
Inventor 姜晓晨于哲朴凤昊杜磊赵阔马晓宇王辉
Owner JILIN OPTICAL & ELECTRONICS MATERIALS
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