Photocurable resin composition and method of manufacturing image display device using the same

Abstract

A photocurable resin composition containing an acrylate-based oligomer component as component (a), an acrylic-based monomer component as component (b), a plasticizer component as component (c), and a photopolymerization initiator component as component (d). The total amount of the component (a) and the component (b) contained in the photocurable resin composition is 25 to 80% by mass, and the amount of the plasticizer component as the component (c) contained in the photocurable resin composition is 65 to 10% by mass. The component (c) contains a solid tackifier and a liquid plasticizing component, and the mass ratio of the tackifier to the liquid plasticizing component is in the range of 60 to 30:30 to 10.

1 . A photocurable resin composition that can be used to manufacture an image display device including an image display member and a light-transmitting cover member that are stacked through a light-transmitting cured resin layer formed from the photocurable resin composition in a liquid form, the photocurable resin composition comprising the following 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 photocurable resin composition is 25 to 80% by mass, 
 an amount of the component (c) contained in the photocurable resin composition 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 as well as contains a tackifier 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 photocurable resin composition 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 photocurable resin composition according to  claim 1 , wherein the image display device is configured such that the image display member and the 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 formed from the photocurable resin composition in a liquid form such that a light-shielding layer-formed surface of the light-transmitting cover member is disposed facing the image display member.