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Method for producing optical display device and winding-up roller for producing optical display device

A technology of optical display and manufacturing method, which is applied in the direction of chemical instruments and methods, optics, lamination devices, etc., can solve the problems of easy peeling at the end, achieve the effects of preventing peeling, reducing manufacturing costs, and preventing scratches

Active Publication Date: 2014-12-24
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, on the side of the polarizer on the side of the polarizer protective film (with Figure 4 In the state where the opposite side) is warped, when it is attached to an optical display unit, it is easy to peel off from the end

Method used

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  • Method for producing optical display device and winding-up roller for producing optical display device
  • Method for producing optical display device and winding-up roller for producing optical display device
  • Method for producing optical display device and winding-up roller for producing optical display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] (Example 1) In Example 1, from the roll formed by rolling one side of the release film as the inner side, a single-sided protective film with a polarizer protective film attached to only one side of the polarizing film was cut out. A type polarizing plate was bonded to the optical display unit while applying a tension of 50 N / m to the polarizing plate. The amount of warping toward the release film side of the polarizing plate when cut out was 80 mm. In this Example 1, the variation in the bonding position was as small as ±1 mm or so. In addition, regarding the peeling of the end face, peeling was not confirmed under any circumstances.

Embodiment 2

[0060] (Example 2) In Example 2, from the roll formed by rolling one side of the release film as the inner side, a single-sided protective film with a polarizer protective film attached to only one side of the polarizing film was cut out. A type polarizing plate was bonded to the optical display unit while applying a tension of 350 N / m to the polarizing plate. The amount of warping toward the release film side of the polarizing plate when cut out was 80 mm. In this Example 2, the variation in the bonding position was as small as about ±1 mm. In addition, regarding the peeling of the end face, peeling was not confirmed under any circumstances.

Embodiment 3

[0061] (Example 3) In Example 3, from the roll formed by rolling one side of the release film as the inner side, a single-sided protective film with a polarizer protective film attached to only one side of the polarizing film was cut out. A type polarizing plate was bonded to the optical display unit while applying a tension of 500 N / m to the polarizing plate. The amount of warping toward the release film side of the polarizing plate when cut out was 80 mm. In Example 3, the variation in the bonding position was as small as about ±1 mm. In addition, regarding the peeling of the end face, peeling was not confirmed under any circumstances.

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Abstract

PURPOSE: A method for producing an optical display device and a roll raw material are provided to prevent the exfoliation of a polarizer at an optical display unit by winding a release film with a polarizer. CONSTITUTION: A polarizer has a protection film on one side thereof opposite to an adhesive layer. The polarizer and release film is unrolled from a roll raw material by winding a bonded release film inside thereof to be transferred(S2). The unrolled polarizer and the release film or the unrolled polarizer leaving the release film are or is cut by a creation size(S4). The polarizer is combined in an optics display unit which applying a certain tension to the polarizer(S5).

Description

technical field [0001] The present invention relates to an optical display device manufacturing method for manufacturing an optical display device by bonding a polarizing plate to an optical display unit, and a roll for optical display device manufacture. Background technique [0002] As an example of a general polarizing plate, a double-sided protection type polarizing plate in which a polarizing plate protective film is bonded to both surfaces of a polarizing film including a film-shaped polarizing plate via an adhesive layer is known. The polarizing film is formed by drying, for example, a polyvinyl alcohol (PVA) film, and a TAC (triacetyl cellulose) film or the like can be used as the polarizer protective film. [0003] In recent years, as thinner and lighter liquid crystal display devices, which are an example of devices using polarizing plates, have become increasingly demanding, thinner and lighter configurations of polarizing plates have also been demanded. Therefor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1333B32B37/12B65H18/00B65H20/00
CPCB32B7/02B32B37/12B32B2037/268B65H20/02G02B5/3041
Inventor 山本昌司铃木畅杉野洋一郎木村启介古园井信行
Owner NITTO DENKO CORP