UV-photocured resin layer and image display device using the same

1. A UV-photocured resin layer, the UV-photocured resin layer comprising the following cured components (a) to (d):

<component (a)> an acrylate-based oligomer component selected from the group consisting of a polyisoprene-based (meth)acrylate oligomer, a polybutadiene-based (meth)acrylate oligomer, and a polyurethane-based (meth)acrylate oligomer;

<component (b)> an acrylic-based monomer component;

<component (c)> a plasticizer component; and

<component (d)> a photoradical polymerization initiator component; wherein

a total amount of the component (a) and the component (b) contained in the UV-photocured resin layer is 25 to 80% by mass,

an amount of the component (c) contained in the UV-photocured resin layer is 30 to 60% by mass,

the component (c) contains a solid tackifier having a softening point of 60 to 150° C. and a liquid plasticizing component, and

a mass ratio of the tackifier to the liquid plasticizing component is in a range of 60 to 30:30 to 10.

2. The UV-photocured resin layer according to claim 1 , wherein the liquid plasticizing component is at least one selected from the group consisting of a polybutadiene-based plasticizer, a polyisoprene-based plasticizer, a phthalate-based plasticizer, and an adipate-based plasticizer.

3. The UV-photocured resin layer according to claim 2 , wherein the liquid plasticizing component is the polybutadiene-based plasticizer.

4. The UV-photocured resin layer according to claim 2 , wherein the liquid plasticizing component is the polyisoprene-based plasticizer.

5. The UV-photocured resin layer according to claim 2 , wherein the liquid plasticizing component is the phthalate-based plasticizer.

6. The UV-photocured resin layer according to claim 2 , wherein the liquid plasticizing component is the adipate-based plasticizer.

7. The UV-photocured resin layer according to claim 1 , wherein the component (a) is the polyisoprene-based (meth)acrylate oligomer.

8. The UV-photocured resin layer according to claim 1 , wherein the component (a) is the polybutadiene-based (meth)acrylate oligomer.

9. The UV-photocured resin layer according to claim 1 , wherein the component (a) is the polyurethane-based (meth)acrylate oligomer.

10. The UV-photocured resin layer according to claim 1 , wherein the mass ratio of the solid tackifier to the liquid plasticizing component in the component (c) is in the range of 60 to 40:20 to 10.

11. An image display device, wherein the image display device is configured such that an image display member and a light-transmitting cover member having a light-shielding layer formed on a peripheral edge portion thereof are stacked through a light-transmitting cured resin layer comprising the UV-photocured resin layer according to claim 1 such that a light-shielding layer-formed surface of the light-transmitting cover member is disposed facing the image display member.