30results about How to "Excellent step followability" patented technology

An adhesive for cementing together one display element constituent member having a step on the surface on the to-be-cemented side and another display element constituent member, wherein the adhesive is obtained by causing an adhesive composition to be thermally crosslinked and cured using active energy rays, said composition containing a (meth)acrylic ester polymer (A) that includes a reactive-functional-group-containing monomer as a monomer unit constituting a polymer, a bi- or higher-functional component (B) that can be cured using active energy rays, and a thermally crosslinkable crosslinking agent (C). The adhesive composition contains the active-energy-ray-curable component (B) in such an amount that the gel fraction (G1) of the adhesive and the gel fraction (G2) of the adhesive formed by thermally crosslinking the adhesive composition from which the active energy ray curable component (B) has been excluded are substantially the same, and, assuming that the adhesive is formed into a layer measuring 600 mum in thickness and 10 mm in width, the maximum stress when the adhesive layer extends in length up to elongation at break at a measurement length of 20 mm and a tensioning rate of 200 mm / minute in a 23 DEG C, 50% RH environment is 2.8 N or more.

Provided is an adhesive which is obtained by crosslinking an adhesive composition containing (A) a (meth)acrylic acid ester polymer that has a weight average molecular weight of from 200,000 to 900,000 and contains, as a monomer unit that constitutes the polymer, more than 10% by mass but 30% by mass or less of a monomer having a hydroxyl group, (B) a crosslinking agent and (C) a crosslinking accelerator. This adhesive has a gel fraction of 40-90%. An adhesive layer which is formed of this adhesive has both excellent blister resistance and excellent level difference followability.

An acrylic pressure-sensitive adhesive tape including an acrylic pressure-sensitive adhesive layer, wherein a 180° peel adhesive force of the acrylic pressure-sensitive adhesive tape to a glass plate is 10 N / 20 mm or more and a 180° peel adhesive force of the acrylic pressure-sensitive adhesive tape to an acrylic plate is 10 N / 20 mm or more. The acrylic pressure-sensitive adhesive layer contains an acrylic polymer (A), has a gel fraction of 65% or more, and has a 300% tensile residual stress of from 7 to 16 N / cm2.

The invention provides a touch panel (2) which is a capacitive touch panel (2). The touch panel is provided with two transparent conductive films (52) or a transparent conductive film (52) and a covermaterial (6) and is also provided with an adhesive layer (11) located between the two transparent conductive films (52) or between the transparent conductive film (52) and the cover material (6). Thetransparent conductive film (52) has a circuit pattern, and the adhesive layer (11) is formed from an adhesive, wherein the adhesive has a refractive index of 1.45-1.54, a storage elastic modulus atthe temperature of 80 DEG C of 0.02-0.10 MPa, and does not contain a component having a carboxyl group. According to the touch panel (2), the circuit pattern of the transparent conductive film (52) isnot obvious, the segment gap following performance is excellent, and the adverse effect on the transparent conductive film (52) due to carboxyl is avoided.