Display apparatus and process for producing the same

Abstract

Provided is a process for producing a display apparatus, which comprises (a) a step of forming a seal part made of e.g. a double-sided adhesive tape 12 on the edge of a surface of a display device 50 (a first plate), (b) a step of supplying a liquid photocurable resin composition 14 to a region enclosed by the seal part, (c) a step of laminating, in a reduced-pressure atmosphere of not more than 100 Pa, a transparent plate 10 (a second plate) on the photocurable resin composition 14 thereby to obtain a laminated precursor having the photocurable resin composition 14 hermetically sealed, and (d) a step of curing the photocurable resin composition 14 in such a state that the laminated precursor is placed in a pressure atmosphere of not less than 50 kPa to form a resin layer.

1 . A display apparatus comprising:
 first and second plates, of which either one is a display device and the other one is a transparent plate;   a resin layer interposed between the first and second plates; and   a seal part interposed between the first and second plates, while seamlessly enclosing the periphery of the resin layer,   wherein the resin layer comprises a cured photocurable resin composition, which photocurable resin composition comprises an oligomer having a molecular weight of at least 1,000 and having, on average per molecule, from 1.8 to 4 curable functional groups which are acryloyloxy groups and/or methacryloyloxy groups, a hydroxyalkylmethacrylate having a C 3-8  hydroxyalkyl group wherein the number of hydroxy groups is 1 or 2, and a photo-polymerization initiator.   
     
     
         2 . The display apparatus according to  claim 1 , wherein the photocurable resin composition further contains an alkylmethacrylate having a C 8-22  alkyl group. 
     
     
         3 . The display apparatus according to  claim 2 , wherein the photocurable resin composition contains an alkylmethacrylate having a C 8-22  alkyl group in an amount of larger than the content of a hydroxyalkylmethacrylate having a C 3-8  hydroxyalkyl group wherein the number of hydroxy groups is 1 or 2. 
     
     
         4 . The display apparatus according to  claim 1 , which is a liquid crystal display device. 
     
     
         5 . The display apparatus according to  claim 1 , wherein a light-shielding printing part is provided on the periphery of the transparent plate. 
     
     
         6 . The display apparatus according to  claim 1 , wherein the transparent plate is a glass plate. 
     
     
         7 . The display apparatus according to  claim 1 , wherein an antireflection layer is formed on one side of the transparent plate. 
     
     
         8 . The display apparatus according to  claim 1 , wherein the seal part formed on the edge of the first plate is made of a sealing material comprised of a photocurable resin composition having a viscosity at 25° C. of from 200 to 3,000 Pa·s. 
     
     
         9 . The display apparatus according to  claim 8 , wherein the seal part has been cured before curing the photocurable resin composition by applying light via the transparent plate. 
     
     
         10 . The display apparatus according to  claim 8 , wherein the seal part has been cured by applying light from the side of the transparent plate. 
     
     
         11 . The display apparatus according to  claim 1 , which is an EL display device. 
     
     
         12 . The display apparatus according to  claim 1 , which is a plasma display device. 
     
     
         13 . The display apparatus according to  claim 1 , which is a electron ink display device. 
     
     
         14 . The display apparatus according to  claim 1 , which is rectangular in shape. 
     
     
         15 . The display apparatus according to  claim 14 , which has a long side length of at least 0.14 m and a short side length at least 0.08 m. 
     
     
         16 . The display apparatus according to  claim 14 , which has a long side length of 2.5 m or less and a short side length 1.5 m or less.