Method and system for manufacturing optical display device

A system for manufacturing an optical display device in which optical films are bonded to an optical display unit, comprising:

• an optical display unit feeding apparatus that successively feeds optical display units;
• a first optical film feeding apparatus that draws a long sheet material having a first optical film out from a first roll on which the long sheet material is wound up, cuts at least the first optical film into a predetermined length, and feeds the long sheet material having the first optical film cut;
• a first bonding apparatus that bonds the first optical film cut fed from the first optical film feeding apparatus onto one surface of the optical display unit fed from the optical display unit feeding apparatus;
• a feeder that carries and feeds the optical display unit after the first optical film is bonded;
• a second optical film feeding apparatus that draws a long sheet material having a second optical film out from a second roll on which the long sheet material is wound up, cuts at least the second optical film into a predetermined length, and feeds the long sheet material having the second optical film cut;
• a second bonding apparatus that bonds the second optical film cut fed from the second optical film feeding apparatus onto the other surface of the optical display unit fed from the feeder;
• and
• a controller that operates or stops each of the apparatuses, wherein
• the first optical film feeding apparatus has a first roll exchanging section for exchanging a first roll of a previous category for a first roll of a latter category and joining the first optical films of the previous category and the latter category at the time of exchanging categories of the optical display unit,
• the second optical film feeding apparatus has a second roll exchanging section for exchanging a second roll of a previous category for a second roll of a latter category and joining the second optical films of the previous category and the latter category at the time of exchanging categories of the optical display unit,
• the optical display unit feeding apparatus has a counting section that counts the number of optical display units that have been fed by the optical display unit feeding apparatus,
• the controller stores the number N1 of optical display units that may be bonded substantially in correspondence with the length of the first optical film that is present from a joining position of the first optical film to a bonding position of the first optical film, and stores the number N2 of optical display units that may be bonded substantially in correspondence with the length of the second optical film that is present from a joining position of the second optical film to a bonding position of the second optical film, and
• the controller stops each of the apparatuses when the number X of remaining optical display units of the previous category prior to bonding becomes substantially equal to the number N1 or the number N2 at the time of exchanging categories of the optical display unit based on information from the counting section.

A system for manufacturing an optical display device in which optical films are bonded to an optical display unit, comprising:

• an optical display unit feeding apparatus that successively feeds optical display units;
• a first optical film feeding apparatus that draws a long sheet material having a first optical film out from a first roll on which the long sheet material is wound up, cuts at least the first optical film into a predetermined length, and feeds the long sheet material having the first optical film cut;
• a first bonding apparatus that bonds the first optical film cut fed from the first optical film feeding apparatus onto one surface of the optical display unit fed from the optical display unit feeding apparatus;
• a feeder that carries and feeds the optical display unit after the first optical film is bonded;
• a second optical film feeding apparatus that draws a long sheet material having a second optical film out from a second roll on which the long sheet material is wound up, cuts at least the second optical film into a predetermined length, and feeds the long sheet material having the second optical film cut;
• a second bonding apparatus that bonds the second optical film cut fed from the second optical film feeding apparatus onto the other surface of the optical display unit fed from the feeder;
• and
• a controller that operates or stops each of the apparatuses, wherein
• the first optical film feeding apparatus has a first roll exchanging section for exchanging a first roll of a previous category for a first roll of a latter category and joining the first optical films of the previous category and the latter category at the time of exchanging categories of the optical display unit,
• the second optical film feeding apparatus has a second roll exchanging section for exchanging a second roll of a previous category for a second roll of a latter category and joining the second optical films of the previous category and the latter category at the time of exchanging categories of the optical display unit,
• the optical display unit feeding apparatus has a counting section that counts the number of optical display units that have been fed by the optical display unit feeding apparatus,
• the controller stores the number N1 of optical display units that may be bonded substantially in correspondence with the length of first optical film that is present from a joining position of the first optical film to a bonding position of the first optical film, and stores the number N2 of optical display units that may be bonded substantially in correspondence with the length of second optical film that is present from a joining position of the second optical film to a bonding position of the second optical film, and
• the controller stops each of the apparatuses when the number X of remaining optical display units of the previous category prior to bonding becomes substantially equal to the number N1 or the number N2, whichever is larger, and after operating each of the apparatuses, stops each of the apparatus when the number X of remaining optical display units prior to bonding becomes substantially equal to the number N1 or the number N2, whichever is smaller, at the time of exchanging categories of the optical display unit based on information from the counting section.