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Transparent flexible laminate and laminate roll

A laminated, transparent technology, applied in the direction of layered products, synthetic resin layered products, glass/slag layered products, etc., can solve the problems of difficult solar cells to impart softness, and the difficulty of flexibility of substrate materials.

Inactive Publication Date: 2013-08-14
NIPPON STEEL CHEMICALL &MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, among the experimental examples specifically disclosed in Patent Document 2, there are only experimental examples using relatively thick glass with no flexibility or extremely low flexibility.
It is difficult to make the substrate material inherently flexible (flexible) using the technology disclosed therein
Therefore, it is difficult to impart flexibility to final products such as displays and solar cells

Method used

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  • Transparent flexible laminate and laminate roll
  • Transparent flexible laminate and laminate roll
  • Transparent flexible laminate and laminate roll

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0075] Apply the polyamic acid solution A shown in Table 1 on a commercially available glass film with a thickness of 50 μm using an applicator so that the film thickness after heat treatment is about 5 μm, and heat up from 90°C at a rate of 22°C for 1 minute to 360° C. to obtain a laminate having a monolayer polyimide layer on the glass film. The glass film used here has a thermal expansion coefficient of 3.8 ppm / K, a transmittance of 90% at 500 nm, and an elastic modulus of 30 GPa.

[0076] About the laminated body of Example 1 obtained above, warpage, surface roughness, and flexibility were measured. Moreover, the polyimide film was peeled from the glass film of the obtained laminated body, and the light transmittance, phase difference, and thermal expansion coefficient (CTE) of the obtained polyimide film were measured. The summary results are shown in Table 2.

[0077] Table 2

[0078]

Embodiment 2）

[0080] Except having used the polyamic-acid solution B shown in Table 1, it carried out similarly to Example 1, and obtained the laminated body of Example 2. Various evaluations were performed in the same manner as in Example 1 for the obtained laminate. The results are shown in Table 2.

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Abstract

The invention provides a laminate and a laminate roll. The laminate has excellent flexibility and transparency, is applicable to displays, solar cells, and the like; warping of the laminate itself is inhibited; and the laminate has excellent heat resistance and gas barrier properties. The transparent flexible laminate is characterized in that the laminate comprises a glass film with a thick ness of 20-200 microns, and a polyimide resin layer; the polyimide resin layer has a coefficient of thermal expansion of below 10 ppm / K, and has a light transmittance of more than 80% at a wavelength of 500 nm. In addition, a laminate roll formed by rolling the transparent flexible laminate is provided.

Description

technical field [0001] The present invention relates to a transparent flexible laminate having a film-like glass film and a polyimide resin layer, and a laminate roll. Background technique [0002] In recent years, displays and solar cells have become more functional, and substrate materials, one of their components, have been increasingly required to be lightweight and flexible in addition to gas barrier properties and heat resistance, which are conventionally required properties. . Most of the existing substrate materials use glass, but in response to the improvement of these required characteristics, attempts have been made to replace glass with resin, and resin replacement of glass substrate materials is being carried out. [0003] However, compared with glass, resin has lower heat resistance and poor gas barrier properties, so it is pointed out that there are problems such as restrictions on the manufacturing methods of displays and solar cells, insufficient performanc...

Claims

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Application Information

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IPC IPC(8): B32B17/10B32B27/06C08G73/10
CPCY02E10/50B32B17/10B32B27/281B32B2457/20B32B2307/412B32B7/023B32B2457/10
Inventor 片山正和平石克文须藤芳树
Owner NIPPON STEEL CHEMICALL &MATERIAL CO LTD
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