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Transparent composite substrate and display element substrate

A composite substrate and transparent technology, applied in the direction of textiles and papermaking, chemical instruments and methods, synthetic resin layered products, etc., can solve problems such as lack of optical properties, achieve uniform and excellent optical properties, high reliability, suppress The effect of reducing

Inactive Publication Date: 2014-06-04
SUMITOMO BAKELITE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, conventional glass fiber composite resin sheets have a problem that they are optimized only for printed circuit board applications, and therefore do not have optical properties suitable for the above-mentioned applications.

Method used

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  • Transparent composite substrate and display element substrate
  • Transparent composite substrate and display element substrate
  • Transparent composite substrate and display element substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1A）

[0188] (1) Preparation of glass cloth

[0189] First, as a glass cloth, a 100 mm square NE glass-based glass cloth (average thickness 95 μm, average wire diameter 9 μm) was prepared. After immersing this in benzyl alcohol (refractive index 1.54), acetoxyethoxyethane (refractive index 1.406) was added to the benzyl alcohol in small amounts. Then, each time the refractive index of benzyl alcohol was changed, a glass cloth was covered on the fluorescent lamp, and it was confirmed whether the glass cloth was substantially transparent. In addition, the refractive index of the mixed solution when a substantially transparent portion appeared on the glass cloth was measured.

[0190] The difference between the refractive index of the mixed liquid when a substantially transparent portion first appeared and the refractive index of the mixed liquid when a substantially transparent portion appeared last was defined as the difference in refractive index of the glass cloth. In addition, t...

Embodiment 2A～9A

[0207] (Examples 2A to 9A and Comparative Examples 1A to 5A)

[0208] Except having changed the manufacturing conditions as shown in Table 1 and 2, it carried out similarly to Example 1A, respectively, and obtained the transparent composite board|substrate. In addition, the average thickness of the composite layer is shown in Tables 1 and 2.

[0209] In addition, in Examples 2A, 3A, 4A, 8A, 9A and Comparative Example 2A, the hydrogenated biphenyl type alicyclic epoxy resin (E-BP, Tg manufactured by Daicel Chemical Industries, Ltd.) used as a resin monomer : >250° C.) has the structure of the following chemical formula (2). In addition, the refractive index of E-BP after crosslinking was 1.522.

[0210]

[0211] In addition, in Examples 3A, 8A, 9A and Comparative Example 2A, T glass-based glass cloth (average thickness 95 μm, average wire diameter 9 μm) was used as the glass cloth, and in Example 5A and Comparative Examples 3A and 4A, as As the glass cloth, S glass-type g...

Embodiment 1B～10B and comparative example 1B～6B

[0219] In Example 1B, except having made the content of the glass cloth in a composite layer into 57 mass %, it carried out similarly to Example 1A, and obtained the transparent composite board|substrate. Moreover, in Examples 2B-10B and Comparative Examples 1B-6B, except having changed manufacturing conditions as shown in Table 3 and 4, it carried out similarly to Example 1B, respectively, and obtained the transparent composite board|substrate. In addition, the average thickness of the composite layer is shown in Tables 3 and 4.

[0220] In addition, in Examples 3B and 8B and Comparative Examples 2B and 6B, T glass-based glass cloth (average thickness 95 μm, average wire diameter 9 μm) was used as the glass cloth, and in Example 5B and Comparative Examples 3B and 4B, as As the glass cloth, S glass-type glass cloth (average thickness 95 μm, average wire diameter 9 μm) was used.

[0221] In addition, regarding the average refractive index of the glass cloth used, the refractiv...

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Abstract

A transparent composite substrate according to the present invention comprises a composite layer containing a glass fabric constituted by a collective body of glass fibers and a resin material impregnated in the glass fabric, wherein there is a variation in refractive index in the collective body of glass fibers, and the difference between the maximum value and the minimum value of the refractive index is 0.008 or lower. Thereby, a transparent composite substrate having superior optical characteristics and a reliable display element substrate provided with this transparent composite substrate can be provided. When the glass fabric is a woven glass fabric woven from at least one first glass fiber bundle formed by bundling a plurality of glass fibers and at least one second glass fiber bundle formed by bundling a plurality of glass fibers, it is preferable that a ratio of a first rate relative to a second rate is from 1.04 to 1.40 inclusive, the first rate being the rate of glass fibers in the cross-sectional surface of the first glass fiber bundle per unit width, and the second rate being the rate of glass fibers in the cross-sectional surface of the second glass fiber bundle per unit width.

Description

technical field [0001] The present invention relates to a transparent composite substrate and a display element substrate. Background technique [0002] Glass plates are widely used in color filter substrates used in display elements such as liquid crystal display elements and organic EL display elements, display element substrates such as active matrix substrates, substrates for solar cells, and the like. However, glass plates are easily broken, cannot be bent, and are not suitable for weight reduction. In recent years, substrates (plastic substrates) made of plastic materials have been studied as alternative materials. [0003] Here, as a plastic substrate, a glass fiber composite resin sheet for a printed circuit board has been proposed (for example, refer to Patent Document 1). The glass fiber composite resin sheet is obtained by impregnating a transparent resin material into a glass cloth containing glass fibers. In particular, the glass fiber composite resin sheet ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B17/04B32B5/28B32B9/00C03C25/007
CPCB32B17/04C03C25/007G02F1/133305B32B5/024B32B27/12B32B27/308B32B27/38B32B2255/02B32B2255/205B32B2260/021B32B2260/046B32B2262/101B32B2307/412B32B2307/418B32B2307/7242B32B2457/20B32B2457/202B32B2457/206D03D1/00D10B2101/06D10B2505/02D03D15/267Y10T442/2098Y10T442/2951Y10T442/2992
Inventor 梅田英雄内藤学大塚博之江口敏正
Owner SUMITOMO BAKELITE CO LTD
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