Importance

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Abstract

The present invention intends to provide a display, or an optical film with an adhesive, in which a bend of the display or peeling of the optical film does not occur even when the display or the optical film is used under an environment where a temperature change is large, and birefringence due to deformation of an adhesive can be suppressed stably irrespective of the temperature change, and occurrence of light leakage and the like is suppressed, so that the optical performance is more excellent, by pasting a glass plate and an optical film together with an adhesive in which temperature dependence of the birefringence is zero. The present invention relates to a technique for obtaining the above-described effects, the technique capable of stably providing an adhesive in which both the birefringence and the temperature dependence of the birefringence are zero, the adhesive having a measured value of birefringence of an adhesive Δn⁰ within a range of ±0.2×10⁻⁴ and having a temperature coefficient of the birefringence of an adhesive dΔn⁰/dT within a range of ±0.02×10⁻⁵/° C. The adhesive is utilized in a display having a structure obtained by pasting a transparent substrate and an optical film together through an adhesive layer, or is utilized in an adhesive layer of an optical film with an adhesive.

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First Claim