Method for manufacturing image display device

Abstract

A liquid photocurable resin composition not containing a thermal polymerization initiator is applied to a surface of a light-transmitting cover member having a light-shielding layer or a surface of an image display member, irradiated with ultraviolet rays under an atmosphere where the oxygen concentration is significantly decreased and cured, to form a light-transmitting cured resin layer. Subsequently, the image display member and the light-transmitting cover member are stacked through the light-transmitting cured resin layer to manufacture an image display device of the present invention.

1 . A method for manufacturing an image display device, wherein an image display member and a light-transmitting cover member having a light-shielding layer formed in a peripheral portion are stacked through a light-transmitting cured resin layer formed from a liquid photocurable resin composition so that a light-shielding layer-forming face of the light-transmitting cover member is disposed on the image display member side, the method comprising the following steps (A) to (C):
 <Step (A)>
 a step of applying the liquid photocurable resin composition to the light-shielding layer-forming face of the light-transmitting cover member or a surface of the image display member to form a liquid photocurable resin composition layer; 
   <Step ( 13 )>
 a step of irradiating the photocurable resin composition layer with ultraviolet rays so that a cure rate of an outermost surface is 90% or more and a cure rate of an entire layer is 90% or more, to form a light-transmitting cured resin layer; and 
   <Step (C)>
 a step of bonding the light-transmitting cover member to the image display member so that the light-transmitting cured resin layer is placed inside. 
   
     
     
         2 . A method for manufacturing an image display device, wherein an image display member and a light-transmitting cover member having a light-shielding layer formed in a peripheral portion are stacked through a light-transmitting cured resin layer formed from a liquid photocurable resin composition so that a light-shielding layer-forming face of the light-transmitting cover member is disposed on the image display member side, the method comprising the following steps (A) to (C):
 <Step (A)>
 a step of applying the liquid photocurable resin composition to the light-shielding layer-forming face of the light-transmitting cover member or a surface of the image display member to form a liquid photocurable resin composition layer; 
   <Step (B)>
 a step of irradiating the photocurable resin composition layer with ultraviolet rays under reduced pressure or an inert gas atmosphere so that a cure rate of an outermost surface is 90% or more, a cure rate of an entire layer is 90% or more, and the photocurable resin composition is not in contact with oxygen, to form a light-transmitting cured resin layer; and 
   <Step (C)>
 a step of bonding the light-transmitting cover member to the image display member so that the light-transmitting cured resin layer is placed inside. 
   
     
     
         3 . The manufacturing method according to  claim 1 , wherein the image display member is a liquid crystal display panel, an organic EL display panel or a tough panel. 
     
     
         4 . The manufacturing method according to  claim 1 , wherein the liquid photocurable resin composition contains a polyurethane-based (meth)acrylate or a polyisoprene-based (meth)acrylate, and a flexibility-imparting agent. 
     
     
         5 . The manufacturing method according to  claim 2 , wherein the image display member is a liquid crystal display panel, an organic EL display panel or a tough panel. 
     
     
         6 . The manufacturing method according to  claim 2 , wherein the liquid photocurable resin composition contains a polyurethane-based (meth)acrylate or a polyisoprene-based (meth)acrylate, and a flexibility-imparting agent. 
     
     
         7 . The manufacturing method according to  claim 3 , wherein the liquid photocurable resin composition contains a polyurethane-based (meth)acrylate or a polyisoprene-based (meth)acrylate, and a flexibility-imparting agent. 
     
     
         8 . The manufacturing method according to  claim 5 , wherein the liquid photocurable resin composition contains a polyurethane-based (meth)acrylate or a polyisoprene-based (meth)acrylate, and a flexibility-imparting agent.