CPI film with water-oxygen barrier property and preparation method thereof

A water-oxygen barrier and film technology, which is applied in semiconductor/solid-state device manufacturing, identification devices, instruments, etc., can solve the problems of high cost, difficulty in large area, continuous scale preparation, etc., and achieve the effect of avoiding yellowing

Active Publication Date: 2021-06-25
浙江中科玖源新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by the cavity size of atomic layer deposition, it is difficult to carry out large-area, continuous scale preparation, and the cost is high

Method used

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  • CPI film with water-oxygen barrier property and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0024] A kind of CPI film with water and oxygen barrier performance, its preparation method comprises:

[0025] S1. Add 10mL of tetrabutyl titanate into 30mL of absolute ethanol, stir and mix at room temperature for 2 hours, then add 15mL of tetrabutylammonium orthosilicate, stir and mix evenly, add 0.5mL of tetrabutylammonium hydroxide and 10mL of absolute ethanol at room temperature Mix the solution, stir and mix evenly to obtain the coating solution;

[0026] S2. Apply the above-mentioned coating solution on the surface of a transparent polyimide (CPI) base film (90% visible light transmittance, about 70 μm in thickness) by spin coating, and the thickness of the coating is about 10 μm. After the coating is completed Transfer to a high and low temperature alternating humid heat box, under the condition of relative humidity of 80%, raise the temperature to 60°C at a rate of 1°C / min, keep it for 0.5h, continue to raise the temperature to 120°C, keep it for 1.5h, take it out an...

Embodiment 2

[0028] A kind of CPI film with water and oxygen barrier performance, its preparation method comprises:

[0029] S1, the transparent polyimide (CPI) base film (visible light transmittance 90%, thickness is about 70 μ m) is immersed in the H concentration of 30wt%. 2 o 2 In the solution, heat preservation treatment at 40°C for 0.5h, take it out, wash it with a large amount of deionized water, and dry it to obtain a transparent polyimide (CPI) base film after surface activation treatment;

[0030] S2. Add 10mL of tetrabutyl titanate to 30mL of absolute ethanol, stir and mix at room temperature for 2 hours, then add 15mL of ethyl orthosilicate, stir and mix evenly, add 0.5mL of tetrabutylammonium hydroxide and 10mL of absolute ethanol at room temperature Mix the solution, stir and mix evenly to obtain a coating solution;

[0031] S3. Apply the above-mentioned coating liquid on the surface of the transparent polyimide (CPI) base film after the surface activation treatment by the ...

Embodiment 3

[0033] A kind of CPI film with water and oxygen barrier performance, its preparation method comprises:

[0034] S1, the transparent polyimide (CPI) base film (visible light transmittance 90%, thickness is about 70 μ m) is immersed in the H concentration of 30wt%. 2 o 2 In the solution, heat preservation treatment at 30°C for 1 hour, rinse with a large amount of deionized water after taking out, and dry to obtain a transparent polyimide (CPI) base film after surface activation treatment;

[0035] S2. Add 6g of aluminum isopropoxide to 30mL of absolute ethanol, stir and mix at room temperature for 2 hours, then add 15mL of tetrabutylammonium hydroxide and 10mL of absolute ethanol, add 15mL of tetrabutylammonium hydroxide and 10mL of absolute ethanol at room temperature and mix well solution, after stirring and mixing uniformly, a coating liquid is obtained;

[0036] S3. Apply the above-mentioned coating liquid on the surface of the transparent polyimide (CPI) base film after t...

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Abstract

The invention provides a preparation method of a CPI film with water-oxygen barrier property. The method comprises the following steps: coating a coating liquid containing metal alkoxide on the surface of a CPI base film, and forming an inorganic oxide layer on the surface of the CPI base film after heat-moisture treatment to obtain the CPI film. According to the CPI thin film with the water and oxygen barrier property and the preparation method thereof, the inorganic oxide layer is formed on the surface of the CPI base film in a coating mode and the like, water / oxygen barrier can be efficiently carried out, and large-area and continuous production is achieved.

Description

technical field [0001] The invention relates to the technical field of functional films, in particular to a CPI film with water and oxygen barrier properties and a preparation method thereof. Background technique [0002] In 1992, Gustafsson et al. invented OLEDs based on flexible polymer materials on PET substrates; in 1997, Forrest et al. invented OLEDs based on flexible small molecule materials. This kind of display device is soft, deformable and not easy to damage. It can be installed on curved surfaces and even wearable. Therefore, it has increasingly become a research hotspot in the international display industry. And OLED has more advantages than other flexible displays: it is a self-luminous display, with fast response speed and wide viewing angle; it is made of organic materials and has strong bending ability. Therefore, it has a very wide range of applications in special fields such as portable products with good display effects and military affairs. Using flexib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/56H01L51/52H01L27/32G09F9/30
CPCG09F9/301H10K59/10H10K50/844H10K71/00
Inventor 金文斌阙新红祝春才张群
Owner 浙江中科玖源新材料有限公司
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