Method of manufacturing image display apparatus
AssigneeDexerials Corporation
InventorsKouichi Ogawa, Yoshihisa Shinya, Naoki Hayashi, Tomoyuki Toyoda
Life of this patent
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Abstract
In the method of manufacturing an image display apparatus according to the present invention, a liquid photocurable resin composition that does not contain a thermal polymerization initiator is coated on the surface of a light-transmissive cover member including a light shielding layer or the surface of an image display member in a thickness thicker than that of the light shielding layer, and thereafter UV rays are irradiated in that state for curing to form a light-transmissive cured resin layer. Then, the image display member and the light-transmissive cover member are laminated to each other via the light-transmissive cured resin layer to obtain an image display apparatus.
Claims10
A method of manufacturing an image display apparatus wherein an image display member and a light-transmissive cover member having a light shielding layer formed around an outer edge of the cover member are laminated to each other via a light-transmissive cured resin layer formed from a liquid photocurable resin composition such that a surface of the light-transmissive cover member on which the light shielding layer is formed is arranged on a side of the image display member, the manufacturing method comprising the following steps (A) to (C):
- <Step (A)>
- coating the surface of the light-transmissive cover member on which the light shielding layer is formed with the liquid photocurable resin composition in a thickness thicker than that of the light shielding layer so that a step formed by the light shielding layer and the surface of the light-transmissive cover member on which the light shielding layer is formed is canceled;
- <Step (B)>
- irradiating UV rays to the coated photocurable resin composition for curing to form a light-transmissive cured resin layer having a cure rate of 90% or more and less than 100%;
- and
- <Step (C)>
- bonding the light-transmissive cover member with the image display member such that the light shielding layer and the light-transmissive cured resin layer are between the light-transmissive cover member and the image display member;
- wherein
- in the step (A), a mixed amount of a tackifier in 100 parts by mass of the liquid photocurable resin composition is 40 to 70 parts by mass,
- in the step (B), an initial adhesive strength of the coated photocurable resin composition, which is cured to form the light-transmissive cured resin layer having a cure rate of 90% or more and less than 100%, is increased by the tackifier, and
- in the step (C), the bonding is performed under pressure at 10 to 80° C. using a pressure bonding apparatus.
A method of manufacturing an image display apparatus wherein an image display member and a light-transmissive cover member having a light shielding layer formed around an outer edge of the cover member are laminated to each other via a light-transmissive cured resin layer formed from a liquid photocurable resin composition such that a surface of the light-transmissive cover member on which the light shielding layer is formed is arranged on a side of the image display member, the manufacturing method comprising the following steps (A) to (C):
- <Step (A)>
- coating the surface of the light-transmissive cover member on which the light shielding layer is formed with the liquid photocurable resin composition over the light shielding layer in a thickness thicker than that of the light shielding layer so that a step formed by the light shielding layer and the surface of the light-transmissive cover member on which the light shielding layer is formed is canceled;
- <Step (B)>
- irradiating UV rays to the coated photocurable resin composition for curing to form a light-transmissive cured resin layer having a cure rate of 90% or more and less than 100%;
- and
- <Step (C)>
- bonding the light-transmissive cover member with the image display member such that the light shielding layer and the light-transmissive cured resin layer are between the light-transmissive cover member and the image display member;
- wherein
- in the step (A), a mixed amount of a tackifier in 100 parts by mass of the liquid photocurable resin composition is 40 to 70 parts by mass,
- in the step (B), an initial adhesive strength of the coated photocurable resin composition, which is cured to form the light-transmissive cured resin layer having a cure rate of 90% or more and less than 100%, is increased by the tackifier, and
- in the step (C), the bonding is performed under pressure at 10 to 80° C. using a pressure bonding apparatus.
A method of manufacturing an image display apparatus wherein an image display member and a light-transmissive cover member having a light shielding layer formed around an outer edge of the cover member are laminated to each other via a light-transmissive cured resin layer formed from a liquid photocurable resin composition such that a surface of the light-transmissive cover member on which the light shielding layer is formed is arranged on a side of the image display member, the manufacturing method comprising the following steps (A) to (C):
- <Step (A)>
- coating the surface of the light-transmissive cover member on which the light shielding layer is formed with the liquid photocurable resin composition in a thickness thicker than that of the light shielding layer so that a step formed by the light shielding layer and the surface of the light-transmissive cover member on which the light shielding layer is formed is canceled;
- <Step (B)>
- irradiating UV rays to the coated photocurable resin composition for curing to form a light-transmissive cured resin layer having a cure rate of 90% or more and less than 100%;
- and
- <Step (C)>
- bonding the light-transmissive cover member with the image display member such that the light shielding layer and the light-transmissive cured resin layer are between the light-transmissive cover member and the image display member;
- wherein
- in the step (A), a mixed amount of a tackifier in 100 parts by mass of the liquid photocurable resin composition is 40 to 70 parts by mass,
- in the step (B), an initial adhesive strength of the coated photocurable resin composition, which is cured to form the light-transmissive cured resin layer having a cure rate of 90% or more and less than 100%, having temporarily cured is increased by the tackifier,
- in the step (C), the bonding is performed under pressure at 10 to 80° C. using a pressure bonding apparatus, and
- the tackifier is selected from the group consisting of terpene-based resins, a terpene resin, a terpene phenol resin, a hydrogenated terpene resin, rosin resins, a natural rosin, a polymerized rosin, a rosin ester, a hydrogenated rosin, petroleum resins, polybutadiene, and polyisoprene.
Dependencies are inferred from the claim text.