System for continuous manufacture of optical display panels, and method for continuous manufacture of optical display panels

A technology for optical display panels and manufacturing systems, applied in chemical instruments and methods, optics, optical components, etc., can solve problems such as bubbles in optical films and liquid crystal units

Active Publication Date: 2015-08-19
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, in the pasting methods like Patent Documents 1 and 2, air bubbles may be generated between the optical film and the liquid crystal cell at the initial stage of bonding the optical film to the liquid crystal cell.

Method used

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  • System for continuous manufacture of optical display panels, and method for continuous manufacture of optical display panels
  • System for continuous manufacture of optical display panels, and method for continuous manufacture of optical display panels
  • System for continuous manufacture of optical display panels, and method for continuous manufacture of optical display panels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0085] figure 1 is a simplified diagram of a continuous manufacturing system for optical display panels. Below, refer to figure 1 The continuous manufacturing system of the optical display panel which concerns on this embodiment is demonstrated concretely.

[0086] In addition, in this embodiment, the example of the rectangular liquid crystal cell is mentioned as an optical cell, and the example of a rectangular liquid crystal display panel is mentioned and demonstrated as an optical display panel. As an optical film roll, usefigure 1 components shown. That is, as the optical film roll 1, a member wound with a strip-shaped laminated optical film 10 formed by laminating a strip-shaped laminated optical film 10 having an absorption axis in the longitudinal direction on a carrier film 12 is used. The polarizing film 11 (corresponding to an optical film) has a width corresponding to the long side of the liquid crystal cell P. As shown in FIG. In addition, in this embodiment, t...

Embodiment approach 2

[0124] Embodiment 2 has the same functions as those of Embodiment 1 described above, and a configuration specific to Embodiment 2 will be described below.

[0125] In order to reduce or eliminate (substantially eliminate) the vibration generated when the dancer roller 41b operates, the deformation canceling unit 91 of the second embodiment controls to operate while braking the dancer roller 41b. Thereby, generation|occurrence|production of air bubbles at the initial stage of bonding can be suppressed.

[0126]

[0127] use figure 1 The following examples 1 to 6 were carried out in a continuous production system. use figure 1 In the production system shown, a polarizing film (VEGQ1724DU manufactured by Nitto Denko Co., Ltd.) was bonded to a liquid crystal cell (40-inch size).

[0128] In Examples 1 to 6 and Comparative Examples 1 to 3, as shown in Table 1, the thickness of the laminated optical film, the film feeding (transportation) speeds of the inner feed roller part, t...

Embodiment 1

[0131] In Example 1, the inner feed speed, the outer feed speed, and the bonding speed are all synchronized and controlled so that the dancer roller does not move (does not move) at the same speed, thereby changing the speed of the laminated optical film. Small. Therefore, generation of bubbles was not observed. Figure 2A In Example 1, the internal feed speed (same as the external feed speed or bonding speed), the speed of the laminated optical film, and the speed of the dancer roll during the bonding period of the polarizing film to the liquid crystal cell are shown. displacement. Figure 2B yes Figure 2A An enlarged view of the early stage of the drive.

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Abstract

In the present invention, a system for continuous manufacture of optical display panels comprises: a pair of first nip rolls for feeding downstream a laminated optical film; an accumulation section having a dancer roll disposed downstream of the first nip rolls; a peeling-off section for folding back a carrier film inward and peeling the optical film off of the carrier film; a pair of second nip rolls for feeding downstream the carrier film from which the optical film has been peeled off; a take-up section for taking up the carrier film at a roll disposed downstream of the second nip rolls; an optical cell conveyance section for conveying an optical cell; a bonding section for bonding the peeled-off optical film to the optical cell while conveying the optical cell, thus forming an optical display panel; and a distortion elimination section that, while the optical film is being bonded to the optical cell, alleviates distortion occurring in the laminated optical film.

Description

technical field [0001] The invention relates to a continuous manufacturing system of an optical display panel and a continuous manufacturing method of an optical display panel. Background technique [0002] As a method of attaching an optical film to a liquid crystal cell, there is a method (for example, refer to Patent Documents 1 and 2): an elongated laminated optical film is formed by laminating an optical film on a carrier film via an adhesive. In the laminated optical film of the strip, the carrier film is wound around the peeling part so that the carrier film is inside, the optical film is peeled from the carrier film, and the peeled optical film is bonded to the liquid crystal cell. [0003] As an apparatus for realizing the bonding method as described above, for example, sequentially from the upstream: an upstream feed roller for supplying the carrier film laminated with the optical film to the downstream; Adjustment roller; a bonding roller (a pair of bonding rolle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13G02B5/30G02F1/1335
CPCB32B38/10G02B5/3033G02F1/1303B32B2457/20
Inventor 秦和也平田聪近藤诚司
Owner NITTO DENKO CORP
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