Flexible base material, and manufacturing method therefor, glass laminate, and manufacturing method therefor, and manufacturing method for electronic device
A technology of flexible substrates and manufacturing methods, applied in the field of flexible substrates, can solve the problems of low rigidity of substrates, achieve the effect of not being easy to shift positions, and inhibiting decomposition
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[0216] Hereinafter, although an Example etc. are used and the present invention is demonstrated concretely, this invention is not limited to these examples.
[0217] In the following examples and comparative examples, as the glass substrate, a glass plate (length 200 mm, width 200 mm, plate thickness 0.2 mm, coefficient of linear expansion 38×10 -7 / °C, product name "AN100" manufactured by Asahi Glass Co., Ltd.). In addition, as the support glass, a glass plate (length 200 mm, width 200 mm, plate thickness 0.5 mm, coefficient of linear expansion 38×10 -7 / °C, product name "AN100" manufactured by Asahi Glass Co., Ltd.).
manufacture example 1
[0218]
[0219] p-Phenylenediamine (10.8 g, 0.1 mol) was dissolved in N,N-dimethylacetamide (198.6 g), and stirred at room temperature. (3,3',4,4'-biphenyltetracarboxylic dianhydride) (29.4 g, 0.1 mol) was added thereto in 1 minute, and stirred at room temperature for 2 hours to obtain the compound containing the above formula (2-1) And / or the polyamic-acid solution (P1) whose solid content density|concentration of the polyamic acid of the repeating unit represented by a formula (2-2) is 20 mass %. The viscosity of this solution was measured and found to be 3000 centipoise at 20°C.
[0220] The viscosity was obtained by measuring the rotational viscosity at 20° C. using a DVL-BII type digital viscometer (B type viscometer) manufactured by TOKYOKEIKIINC.
[0221] It should be noted that X in the repeating unit represented by formula (2-1) and / or formula (2-2) contained in the polyamic acid is a group represented by (X1), and A is represented by formula (A1). group.
manufacture example 2
[0222]
[0223] Diaminodiphenyl ether (20.0 g, 0.1 mol) was dissolved in N,N-dimethylacetamide (206.8 g), and stirred at room temperature. Add pyromellitic dianhydride (21.8 g, 0.1 mol) therein in 1 minute, stir at room temperature for 2 hours, obtain the repeating unit comprising the above formula (2-1) and / or formula (2-2) A polyamic acid solution (P2) having a polyamic acid solid content concentration of 20% by mass. The viscosity of this solution was measured and found to be 2800 centipoise at 20°C.
[0224] It should be noted that X in the repeating unit represented by formula (2-1) and / or formula (2-2) contained in the polyamic acid is a group represented by formula (X2), A is a group represented by formula (A5) represented group.
PUM
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