KR20160018510A - Defect inspection system - Google Patents

Abstract

The defect inspection system includes a transfer line for transferring a long strip-shaped film, a defect inspection device for defect inspection of the film conveyed by the transfer line, and a defect information detection means for detecting defect information based on the defect inspection result, And the recording apparatus 13 records the defect information by ejecting the ink i into the recording area S along the end edge of the film F105, And a cover 30 for preventing ink (i) from adhering to at least an area inside the recording area S of the film F105.

Description

{DEFECT INSPECTION SYSTEM}

The present invention relates to a defect inspection system.

The present application claims priority based on Japanese Patent Application No. 2013-124040, filed on June 12, 2013, the contents of which are incorporated herein by reference.

For example, an optical film such as a polarizing plate is wound around the core after inspecting defects such as foreign matter defect, irregular defect and the like. Information on the position and kind of the defect (hereinafter referred to as defect information) is recorded on the optical film by printing a bar code on the end portion of the optical film or marking the defective portion. The optical film wound on the core material is separated from the optical film on the upstream side when the amount of winding reaches a certain amount, and is shipped as a raw material roll. For example, Patent Document 1 discloses a defect inspection system including a defect inspection apparatus and a recording apparatus for recording defect information on a film on a transport line of an optical film.

Patent Document 1: JP-A-2011-7779

Incidentally, in the above-described defect inspection system, when defect information is recorded on an optical film, the ink ejected from the print head is scattered to the periphery, thereby contaminating the optical film. The contamination of this optical film is one of the causes for lowering the yield of the optical film.

In the defect inspection system, the larger the distance between the optical film and the print head, the larger the influence of scattering of the ink. However, narrowing the distance between the optical film and the print head affects the print size and the like, and therefore this distance can not be adjusted easily.

An aspect of the present invention has been proposed in view of such conventional circumstances, and it is an object of the present invention to provide a defect inspection system which prevents contamination of a film due to scattering of ink when defect information is recorded on a film.

In order to achieve the above object, a defect inspection system according to an aspect of the present invention employs the following configuration.

(1) A defect inspection system according to an embodiment of the present invention includes: a transfer line for transferring a long strip-shaped film; a defect inspection device for defect inspection of a film carried by the transfer line; And a recording apparatus for recording defect information based on the film conveyed by the conveyance line, the recording apparatus comprising: a print head for printing the defect information by ejecting ink to a recording region along the edge portion of the film; And a cover for preventing ink from adhering to at least an area inside the recording area of the film.

(2) In the mode (1), the cover may have a first side plate portion that covers at least a side facing the inside of the film, out of the space in which the film and the print head face each other.

(3) In the embodiment (2), the cover may include a second side plate portion that covers a side of the space that faces the upstream side in the transport direction of the film, and a second side plate portion that faces the downstream side in the transport direction of the film And a third side plate portion covering the side of the first side plate.

(4) In the embodiment (3), the cover may have a fourth side plate portion covering the side facing the outer side of the film in the space.

(5) In any one of the above-mentioned aspects (1) to (4), the distance between the surface of the cover facing the film and the surface of the film may be 1 mm or less.

(6) In any one of the above aspects (1) to (5), the cover may be detachably attached to the print head.

(7) In the embodiment of (1) above, the cover may be disposed opposite to the film in a state of being close to the film, and may have a window at a position facing the recording area.

(8) In any one of the above-mentioned aspects (1) to (7), the defect inspection system may further include a defect inspection system which is located on the upstream side of the recording apparatus in the transport direction of the film, A static electricity removing device may be provided.

According to an aspect of the present invention, it is possible to provide a defect inspection system that prevents contamination of a film due to scattering of ink when recording defect information on a film.

1 is a plan view showing an example of a liquid crystal display panel.
2 is a cross-sectional view of the liquid crystal display panel shown in Fig.
3 is a cross-sectional view showing an example of an optical film.
4 is a side view showing a configuration of a film production apparatus and a defect inspection system.
Fig. 5A is a plan view of an example of the cover on the upper side of the film.
5B is a side view showing an example of the cover on the upstream side of the film.
5C is a side view showing an example of the cover on the outside of the film.
6 is a plan view showing a modified example of the cover.
7A is a perspective view showing a modified example of the cover.
7B is a side view showing a modified example of the cover.
8A is a plan view showing another embodiment of the cover.
8B is a side view showing another embodiment of the cover.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In this embodiment, a film production apparatus constituting a part of the production system of the optical display device will be described.

The film production apparatus is bonded to a panel-type optical display component (optical display panel) such as a liquid crystal display panel or an organic EL display panel. For example, a film-like optical member such as a polarizing film, a retardation film, Film). The film production apparatus constitutes a part of a production system for producing such an optical display device or an optical display device including an optical member.

In the present embodiment, a transmissive liquid crystal display device is exemplified as an optical display device. A transmissive liquid crystal display device includes a liquid crystal display panel and a backlight. In this liquid crystal display device, it is possible to display an image by causing the illumination light emitted from the backlight to enter from the back side of the liquid crystal display panel and emitting the light modulated by the liquid crystal display panel from the surface side of the liquid crystal display panel.

(Optical display device)

First, the configuration of the liquid crystal display panel P shown in Figs. 1 and 2 will be described as an optical display device. 1 is a plan view showing a configuration of a liquid crystal display panel P. Fig. Fig. 2 is a sectional view of the liquid crystal display panel P taken along the line A-A shown in Fig. On the other hand, in Fig. 2, the illustration of hatching showing the cross section is omitted.

1 and 2, the liquid crystal display panel P includes a first substrate P1, a second substrate P2 disposed opposite to the first substrate P1, a first substrate P1, And a liquid crystal layer P3 disposed between the first substrate P1 and the second substrate P2.

The first substrate P1 is made of a transparent substrate having a rectangular shape in plan view. The second substrate P2 is made of a transparent substrate having a rectangular shape relatively smaller than the first substrate P1. The periphery of the liquid crystal layer P3 between the first substrate P1 and the second substrate P2 is sealed with a sealing material (not shown). The liquid crystal layer P3 is disposed inside a rectangular region viewed from a plane surrounded by the sealing material. In the liquid crystal display panel P, a region which is located inside the outer periphery of the liquid crystal layer P3 in plan view is used as the display region P4, and an outer region surrounding the periphery of the display region P4 is referred to as a frame portion G).

A first optical film F11 as a polarizing film is bonded to the rear surface (backlight side) of the liquid crystal display panel P. A second optical film F12 as a polarizing film and a third optical film F13 as a brightness enhancement film are overlapped with the second optical film F12 on the surface (display surface side) of the liquid crystal display panel P have. Hereinafter, the first, second and third optical films F11, F12 and F13 are collectively referred to as an optical film F1X.

(Optical film)

Next, an example of the optical sheet FX constituting the optical film F1X shown in Fig. 3 will be described. 3 is a sectional view showing the structure of the optical sheet FX. On the other hand, in FIG. 3, the illustration of hatching showing the cross section is omitted.

The optical film F1X is obtained by cutting out a sheet piece of a predetermined length from the long strip-shaped optical sheet FX shown in Fig. Specifically, the optical sheet FX comprises a base sheet F4, an adhesive layer F5 formed on one surface (the upper surface in Fig. 3) of the base sheet F4, an adhesive layer F5, A separator sheet F6 formed on one side of the base sheet F4 via a base sheet F4 and a surface protection sheet F7 formed on the other side of the base sheet F4.

The substrate sheet F4 has a structure in which, for example, in the case of a polarizing film, the polarizer F4a is sandwiched between a pair of protective films F4b and F4c. The adhesive layer F5 is a layer for adhering the base sheet F4 to the liquid crystal display panel P. [ The separator sheet F6 is a sheet for protecting the adhesive layer F5. The separator sheet F6 is peeled from the adhesive layer F5 when the sheet piece (optical film F1X) is cut from the optical sheet FX. Hereinafter, the portion excluding the separator sheet F6 (the portion that becomes the optical film F1X) from the optical film F1X is referred to as a bonded sheet F8. The surface protection sheet F7 is a sheet for protecting the surface of the base sheet F4. The surface protective sheet F7 is peeled from the surface of the base sheet F4 after the base sheet F4 is bonded to the liquid crystal display panel P. [

On the other hand, for the substrate sheet F4, either one of the pair of protective films F4b and F4c may be omitted. For example, the protective film F4b on the side of the adhesive layer F5 may be omitted, and the adhesive layer F5 may be directly formed on the polarizer F4a. The protective film F4c on the side of the surface protective sheet F7 may be provided with a hard coat treatment for protecting the outermost surface of the liquid crystal display panel P or a surface treatment such as an antiglare treatment for obtaining anti- Or may be processed. The substrate sheet F4 is not limited to the above-described laminated structure, and may be a single-layered structure. The surface protective sheet F7 may be omitted.

(Film Production Apparatus)

Next, the film production apparatus 100 shown in Fig. 4 will be described. Fig. 4 is a side view showing the structure of the film production apparatus 100. Fig.

As shown in Fig. 4, the film production apparatus 100 is provided with a long strip-shaped second film (for example, a long strip-shaped first film F101 as a polarizing film) F102 are bonded to the other side of the first film F101 and then the third film F103 in the form of a long strip which is to be a surface protective film is bonded to the other side of the first film F101, F102) and the third film (F103) are bonded to each other.

Specifically, the film production apparatus 100 includes a first conveying line 101, a second conveying line 102, a third conveying line 103, a fourth conveying line 104, A conveying line 105, and a winding unit 106. [0034]

The first transfer line 101 forms a transfer path for transferring the first film F101. The second conveyance line 102 forms a conveyance path for conveying the second film F102 released from the first original roll R1. The third conveyance line 103 forms a conveyance path for conveying the single-sided adhesive film F104 on which the second film F102 is bonded to one surface of the first film F101. The fourth conveyance line 104 forms a conveyance path for conveying the third film F103 released from the second original roll R2. The fifth conveying line 105 is a double-side bonded film F103 on which the third film F103 is bonded to the surface of the one-side bonded film F104 on the first film F101 side (the other side of the first film F101) Thereby forming a transport path for transporting the optical film F105 (optical film F10X). The produced optical film F10X is wound on the core material as the third disk roll R3 in the winding section 106. [

The first transfer line 101 is formed by subjecting a film to be a base material of a polarizer such as PVA (Polyvinyl Alcohol), for example, to a dyeing treatment, a cross-linking treatment, a stretching treatment, Is a line that transports the first film (F101) of a long strip shape obtained by bonding the film toward the third conveyance line (103).

Specifically, the first conveying line 101 is provided with a pair of first nip rolls 111a and 111b (first conveying line), from one side with the upstream side of the third conveying line 103 interposed therebetween toward the third conveying line 103 A first accumulator 112 including a plurality of first dancer rolls 112a and 112b and a first guide roll 113 are arranged side by side in the horizontal direction.

The pair of first nip rolls 111a and 111b are rotated in opposite directions with the first film F101 interposed therebetween to thereby draw out the first film F101 in the arrow direction It is a roll.

The first accumulator 112 is a device for absorbing the difference due to the variation of the feed amount of the first film F101 and reducing the fluctuation of the tension applied to the first film F101. Specifically, the first accumulator 112 includes a plurality of first dancer rolls 112a positioned on the upper side between the first nip rolls 111a, 111b and the first guide roll 113, And a plurality of first dancer rolls 112b are alternately arranged side by side.

In the first accumulator 112, the first film F101 is transferred to the first dancer roll 112a on the upper side and the first film F101 alternately on the first dancer roll 112b on the lower side, The first dancer roll 112a on the upper side and the first dancer roll 112b on the lower side are moved up and down relative to each other. As a result, the first film F101 can be stored without stopping the first transfer line 101. [ For example, in the first accumulator 112, the distance between the first dancer roll 112a on the upper side and the first dancer roll 112b on the lower side is widened, so that the accumulation amount of the first film F101 can be increased . On the other hand, in the first accumulator 112, the accumulation amount of the first film F101 can be reduced by narrowing the distance between the first dancer roll 112a on the upper side and the first dancer roll 112b on the lower side . The first accumulator 112 is activated at the time of work such as splicing after exchanging the core of the master rolls R1 to R3.

The first guide roll 113 is a roll for guiding the first film F101 drawn by the first nip rolls 111a and 111b toward the upstream side of the third conveyance line 103 while rotating. On the other hand, the first guide rolls 113 may be arranged not only in a single arrangement but also in a plurality of arrangements.

The second conveying line 102 is a conveying path for conveying the second film F102 of the long strip shape which is a surface protective film of PET (polyethylene terephthalate) or the like from the first disk roll R1, 103).

Concretely, the second conveying line 102 is provided with a pair of second nip rolls 121a, 121b (121a, 121b) A second accumulator 122 including a plurality of second dancer rolls 122a and 122b and a plurality of second guide rollers 123a and 123b are arranged side by side in the horizontal direction.

The pair of second nip rolls 121a and 121b rotate in opposite directions with the second film F102 interposed therebetween to thereby draw out the second film F102 in the arrow direction It is a roll.

The second accumulator 122 is a device for absorbing the difference due to the variation of the feed amount of the second film F102 and reducing the fluctuation of the tension applied to the second film F102. Specifically, the second accumulator 122 includes a plurality of second dancer rolls 122a positioned on the upper side between the second nip rolls 121a, 121b and the second guide roll 123a, And a plurality of second dancer rolls 122b are alternately arranged side by side.

In the second accumulator 122, the second film F102 is conveyed in a state in which the second film F102 is alternately wound on the second dancer roll 122a on the upper side and the second dancer roll 122b on the lower side, The second dancer roll 122a on the upper side and the second dancer roll 122b on the lower side are relatively moved up and down in the vertical direction. This makes it possible to store the second film F102 without stopping the second transfer line 102. [ For example, in the second accumulator 122, the distance between the second dancer roll 122a on the upper side and the second dancer roll 122b on the lower side can be widened to increase the accumulation amount of the second film F102 . On the other hand, in the second accumulator 122, the distance between the second dancer rolls 122a on the upper side and the second dancer rolls 122b on the lower side is narrowed, so that the accumulation amount of the second film F102 can be reduced . The second accumulator 122 is operated at the time of work such as splicing after exchanging the core material of the disk rolls R1 to R3, for example.

The plurality of second guide rollers 123a and 123b are rolls for guiding the second film F102 drawn by the second nip rolls 121a and 121b toward the upstream side of the third conveyance line 103 while rotating, to be. On the other hand, the second guide rollers 123a and 123b are not limited to a plurality of arrangements, but may be arranged only one.

The third conveying line 103 conveys the long strip-shaped one-side bonded film F104, which is obtained by bonding the second film F102 to one side of the first film F101, toward the fifth conveying line 105 Line.

Specifically, a third pair of third nip rolls 131a and 131b is disposed on the third conveyance line 103. As shown in Fig. The pair of third nip rolls 131a and 131b are located at the junction of the downstream side of the first conveyance line 101 and the downstream side of the second conveyance line 102. [ The pair of third nip rolls 131a and 131b are rotated in opposite directions with the first film F101 and the second film F102 interposed therebetween so that the first film F101 and the second film F102 ). The pair of third nip rolls 131a and 131b draw the single-sided bonding film F104 in which the first film F101 and the second film F102 are joined in the direction of the arrow (lower side) in Fig.

The fourth conveying line 104 is a conveying line for conveying the third film F103 in the form of a long strip which is a surface protective film such as PET (polyethylene terephthalate) from the second disk roll R2, 105).

Concretely, the fourth conveying line 104 is provided with a pair of fourth nip rolls 141a, 141b (first conveying line) A third accumulator 142 including a plurality of third dancer rolls 142a and 142b and a plurality of fourth guide rolls 143a and 143b are arranged side by side in the horizontal direction.

The pair of fourth nip rolls 141a and 141b are rotated in the directions opposite to each other with the third film F103 interposed therebetween to thereby draw out the third film F103 in the arrow direction It is a roll.

The third accumulator 142 is a device for absorbing the difference due to the variation of the feed amount of the third film F103 and reducing the fluctuation of the tension applied to the third film F103. Specifically, the third accumulator 142 includes a plurality of third dancer rolls 142a located on the upper side between the fourth nip rolls 141a, 141b and the fourth guide roll 143a, And a plurality of third dancer rolls 142b are alternately arranged.

In the third accumulator 142, the third film F103 is conveyed in a state in which the third film F103 is alternately wound on the third dancer roll 142a on the upper side and the third dancer roll 142b on the lower side, The third dancer roll 142a on the upper side and the third dancer roll 142b on the lower side are relatively moved up and down in the vertical direction. This makes it possible to store the third film F103 without stopping the fourth transfer line 104. [ For example, in the third accumulator 142, the distance between the third dancer roll 142a on the upper side and the third dancer roll 142b on the lower side is widened, so that the accumulation amount of the third film F103 can be increased . On the other hand, in the third accumulator 142, the accumulation amount of the third film F103 can be reduced by narrowing the distance between the third dancer roll 142a on the upper side and the third dancer roll 142b on the lower side . The third accumulator 142 is activated at the time of work such as splicing after exchanging the core of the master rolls R1 to R3.

The plurality of fourth guide rollers 143a and 143b are arranged such that the third film F103 drawn out by the fourth nip rolls 141a and 141b while being rotated is disposed on the downstream side of the third conveyance line 103 (The upstream side of the rollers 105). On the other hand, the fourth guide rollers 143a and 143b are not limited to a plurality of arrangements, but may be arranged only one.

The fifth conveying line 105 is an elongated strip shape in which the third film F103 is joined to the surface of the one-side bonded film F104 on the first film F101 side (the other side of the first film F101) Side bonding film F105 (optical film F10X) toward the third disk roll R3.

Concretely, the fifth conveying line 105 is provided with a pair of fifth nip rolls 151a and 151b (hereinafter, referred to as " second conveying rollers ") from the other side with the downstream side of the third conveying line 103 interposed therebetween, , A fifth guide roll 153a, a pair of sixth nip rolls 151c and 151d, a fourth accumulator 152 including a plurality of fourth dancer rolls 152a and 152b, And the rolls 153b are arranged side by side in the horizontal direction.

The pair of fifth nip rolls 151a and 151b are located at the confluence of the downstream side of the third conveyance line 103 and the upstream side of the fifth conveyance line 105. [ The pair of fifth nip rolls 151a and 151b are rotated in opposite directions to each other with the one side bonding film F104 and the third film F103 interposed therebetween to form the one side bonding film F104 and the third film F103 ). The pair of fifth nip rolls 151a and 151b draw the double-side bonded film F105 in which the one-side bonded film F104 and the third film F103 are joined in the arrow direction (downward direction) shown in Fig.

The fifth guide roll 153a is a roll that guides the double-side bonded film F105 drawn by the fifth nip rolls 151a and 151b toward the fourth accumulator 152 while rotating. On the other hand, the fifth guide rollers 153a may be arranged in a plurality of arrangements instead of only one.

The pair of sixth nip rolls 151c and 151d are rotated in opposite directions with the double-sided adhesive film F105 sandwiched therebetween to withdraw the double-sided adhesive film F105 in the arrow direction (rightward direction) It is a roll.

In the fourth accumulator 152, the double-side bonded film F105 is conveyed in a state in which the double-side bonded film F105 is alternately wound on the upper side fourth dancer roll 152a and the lower side fourth dancer roll 152b The fourth dancer roll 152a on the upper side and the fourth dancer roll 152b on the lower side are relatively moved up and down in the vertical direction. This makes it possible to store the double-side bonded film F105 without stopping the fifth conveying line 105. [ For example, in the fourth accumulator 152, the distance between the fourth dancer roll 152a on the upper side and the fourth dancer roll 152b on the lower side can be widened to increase the accumulation amount of the double-side bonded film F105 . On the other hand, in the fourth accumulator 152, the distance between the fourth dancer roll 152a on the upper side and the fourth dancer roll 152b on the lower side is narrowed, whereby the accumulation amount of the double-side bonded film F105 can be reduced . The fourth accumulator 152 is operated at the time of work such as splicing after exchanging core members of the disk rolls R1 to R3, for example.

The sixth guide roll 153b is a roll for guiding the double-side bonded film F105 toward the third disk roll R3. On the other hand, the sixth guide rollers 153b may be arranged not only in a single arrangement but also in a plurality of arrangements.

The double-sided adhesive film F105 is wound on the core material as the third disk roll R3 of the optical film F10X in the take-up unit 106, and then sent to the next step.

(Defect inspection system)

Next, a defect inspection system 10 provided in the film production apparatus 100 will be described.

4, the defect inspection system 10 includes a transfer line L, a first defect inspection apparatus 11 and a second defect inspection apparatus 12, a recording apparatus 13, A first side organ (a length measuring device) 14, a second side organ 15, and a control device 16.

The conveying line L is a line forming a conveying path for conveying a film to be inspected. In the present embodiment, the first conveying line 101, the third conveying line 103 and the fifth conveying line 105 constitute a conveying line L.

The first defect inspection apparatus 11 is a device for defect inspection of the first film F101 before the second film F102 and the third film F103 are bonded. Specifically, the first defect inspection apparatus 11 is capable of detecting defects such as foreign matter, irregularity defects, bright spots, and the like, which are generated when the first film F101 is manufactured or when the first film F101 is transported Various defects are detected. The first defect inspection apparatus 11 performs inspection processing such as reflection inspection, transmission inspection, warp penetration inspection, Cross-Nicol penetration inspection, and the like on the first film F101 carried by the first transfer line 101 To detect a defect in the first film (F101).

The first defect inspection apparatus 11 includes a plurality of illumination units 21a and 21b for irradiating the first film F101 with illumination light on the upstream side of the first nip rolls 111a and 111b in the first transfer line 101, 22b and 23b for detecting the light (transmitted light) transmitted through the first film F101 or the light reflected from the first film F101 (reflected light) .

The plurality of illumination portions 21a, 22a and 23a and the light detection portions 21b, 22b and 23b, which are arranged in the transport direction of the first film F101, And are disposed so as to face each other with the film F101 interposed therebetween. In addition, the first defect inspection apparatus 11 is not limited to the configuration for detecting such transmitted light, but may be configured to detect reflected light or to detect transmitted light and reflected light.

The illumination units 21a, 22a, and 23a irradiate the first film F101 with the illumination light whose light intensity, wavelength, polarization state, and the like are adjusted depending on the type of defect inspection. The photodetector units 21b, 22b, and 23b capture an image at a position irradiated with the illumination light of the first film F101 using an image pickup device such as a CCD. An image (defect inspection result) captured by the photodetector units 21b, 22b, and 23b is output to the control unit 16. [

The second defect inspection apparatus 12 is a device for defect inspection of the first film F101, that is, the double-side bonded film F105 after the second film F102 and the third film F103 are bonded. Specifically, the second defect inspection apparatus 12 is used for bonding the second film F102 and the third film F103 to the first film F101, the one-side bonding film F104, and the two- Defects such as foreign matter defect, concavo-convex defect, spots defect, and the like, which are generated when carrying out the defects. The second defect inspection apparatus 12 performs inspection processing such as reflection inspection, transmission inspection, warp penetration inspection, Cross-Nicole penetration inspection, and the like on the double-side bonded film F105 carried by the fifth transfer line 105 Thereby detecting defects in the double-sided bonded film F105.

The second defect inspection apparatus 12 includes a plurality of illumination units 24a and 24b for irradiating illumination light on the both-side bonded film F105 on the upstream side of the sixth nip rolls 151c and 151d in the fifth conveyance line 105, And a plurality of optical detecting portions 24b and 25b for detecting light (transmitted light) transmitted through the double-sided bonded film F105 or light (reflected light) reflected from the double-side bonded film F105.

The plurality of illumination portions 24a and 25a and the light detection portions 24b and 25b arranged in the conveying direction of the double-sided adhesive film F105 are provided on the both-side adhesive film F105, As shown in Fig. Further, the second defect inspection apparatus 12 is not limited to the structure for detecting such transmitted light, but may be configured to detect reflected light or to detect transmitted light and reflected light.

The illumination units 24a and 25a irradiate the double-side bonded film F105 with the illumination light whose light intensity, wavelength, polarization state, etc. are adjusted according to the type of defect inspection. The photodetecting sections 24b and 25b use an image pickup device such as a CCD to pick up an image of the position where the illumination light of the double-side bonded film F105 is irradiated. The image (defect inspection result) picked up by the optical detection units 24b and 25b is output to the control unit 16. [

The recording apparatus 13 is a device for recording defect information based on the defect inspection results of the first defect inspection apparatus 11 and the second defect inspection apparatus 12 in the double-side bonded film F105. Specifically, the defect information includes information on the position and kind of defects, and is recorded as an identification code such as a one-dimensional bar code, a two-dimensional bar code, or a QR code (registered trademark). The identification code includes, for example, a defect detected by the first defect inspecting apparatus 11 and the second defect inspecting apparatus 12 at a position separated by a certain distance along the film width direction from the position where the identification code is printed (Information on the position of the defect) is included. The identification code may include information on the type of the detected defect.

The recording apparatus 13 is provided on the fifth conveyance line 105 on the downstream side of the second defect inspection apparatus 12. The recording apparatus 13 has a print head 13a employing, for example, an ink jet method. The print head 13a ejects ink to a position (recording area) along the widthwise end edge portion of the double-sided bonded film F105 to print the defect information.

Further, the recording apparatus 13 records (directly marks) the defective portion of the double-sided bonded film F105 on a defective portion by marking a dot-shaped, line-shaped, or frame- . At this time, information on the type of the defect may be recorded by printing a mark or a shape indicating the type of defect in addition to the mark, on the defect part.

The first side orifice (14) and the second side orifice (15) are devices for measuring the transport amount of the first film (F101). Specifically, in this embodiment, a rotary encoder constituting the first side arm 14 is disposed in the first nip roll 111a on the upstream side of the first accumulator 112 in the first transfer line 101 And a rotary encoder constituting the second side arm 15 is disposed in the third nip roll 131a on the downstream side of the first accumulator 112. [

The first side orifice 14 and the second side orifice 15 are arranged in such a manner that the rotary encoder is moved in the direction in which the rotary encoder is rotated in accordance with the amount of rotational displacement of the first nip roll 111a and the third nip roll 131a which rotate in contact with the first film F101 1 Film F101 is conveyed. The measurement results of the first side arm 14 and the second side arm 15 are output to the controller 16.

On the other hand, in the present embodiment, since there is only one accumulator between the first defect inspection apparatus 11 and the recording apparatus 13, there is a configuration in which one side organ is arranged on the upstream side and the downstream side of the accumulator . On the other hand, when there are a plurality of accumulators between the first defect inspection apparatus 11 and the recording apparatus 13, the upstream side of the accumulator at the most upstream side and the downstream side of the accumulator at the most downstream side May be arranged one by one.

The control device 16 is an apparatus for collectively controlling each part of the film production apparatus 100. Specifically, the control device 16 is provided with a computer system as an electronic control device. The computer system includes an operation processing unit such as a CPU and an information storage unit such as a memory or a hard disk.

An operating system (OS) for controlling the computer system and a program for executing various types of processing are recorded in the information storage unit of the control device 16, and the arithmetic processing unit is provided for each part of the film production apparatus 100. The control device 16 may also include a logic circuit such as an ASIC for executing various processes required for controlling each part of the film production apparatus 100. The control device 16 also includes an interface for performing input / output with an external device of the computer system. An input device such as a keyboard or a mouse, a display device such as a liquid crystal display display, a communication device, or the like can be connected to this interface.

The controller 16 analyzes the image picked up by the optical detectors 21b, 22b, and 23b and the optical detectors 24b and 25b to determine the presence or absence (position) or type of the defect. When the controller 16 determines that a defect exists in the first film F101 or the both-side bonded film F105, the controller 16 controls the recording apparatus 13 to record the defect information on the both-side bonded film F105 .

The defect inspection system 10 records defect information at a predetermined timing after the defect inspection so that a deviation does not occur between the defect inspection position of the double-sided adhesive film F105 and the information recording position of the defect information. For example, in the present embodiment, after the time at which the defect inspection is performed by the first defect inspection apparatus 11 or the second defect inspection apparatus 12, the transport amount of the film transported on the transport line L is calculated, When the calculated conveyance amount coincides with the offset distance, recording is performed by the recording apparatus 13.

Here, the offset distance refers to the transport distance of the film between the first defect inspection apparatus 11 and the second defect inspection apparatus 12 and the recording apparatus 13. Strictly speaking, the offset distance is determined by the position (defect inspection position) at which the defect inspection is performed by the first defect inspection apparatus 11 and the second defect inspection apparatus 12 and the recording of the defect information by the recording apparatus 13 Is defined as the transport distance of the film between the position (information recording position) where the film is carried out. Further, the offset distance fluctuates when the first accumulator 112 is activated.

The offset distance (hereinafter referred to as a first offset distance) at the same time as the ratio of the first accumulator 112 is stored in the information storage unit of the control device 16 in advance. Specifically, the first defect inspection apparatus 11 and the second defect inspection apparatus 12 include a plurality of photodetection units 21b, 22b, and 23b and photodetection units 24b and 25b, and the photodetection units 21b, 22b, 23b, 24b, and 25b. Therefore, the first offset distance is stored in the information storage unit of the controller 16 for each of the optical detectors 21b, 22b, 23b, 24b, and 25b.

When the offset distance fluctuates due to the operation of the first accumulator 112, correction of the offset distance is performed based on the difference between the amount of conveyance of the first film F101 on the upstream side of the first accumulator 112 and the amount of conveyance of the first film F101 on the downstream side, Lt; / RTI > That is, the control device 16 calculates the accumulation amount of the first film F101 by the first accumulator 112 from the measurement results of the first side arm 14 and the second side arm 15, The correction value of the offset distance is calculated based on the accumulation amount of the first film (F101).

The defect inspection system 10 corrects the timing at which the recording apparatus 13 records defect information on the basis of the correction value of the offset distance when the first accumulator 112 is in operation. For example, in the present embodiment, the correction value of the offset distance is calculated based on the measurement results of the first side arm 14 and the second side arm 15. The control device 16 calculates an offset distance (hereinafter referred to as a second offset distance) when the first accumulator 112 is in operation based on the correction value and the first offset distance.

The defect inspection is performed by the first defect inspection apparatus 11 and the second defect inspection apparatus 12 on the basis of the measurement results of the first side arm 14 or the second side arm 15 After the time, the transport amount of the film transported on the transport line L is calculated, and when the calculated transport amount coincides with the second offset distance, recording is performed by the recording apparatus 13.

In the present embodiment, information indicating that the first accumulator 112 is activated (hereinafter referred to as accumulator operation information) is displayed on the double-side adhesive film F105). When the accumulator operation information is recorded, the operator can thoroughly inspect the defective portion of the portion to which the accumulator operation information is given, thereby detecting the shift of the recording position. As a result, it is less likely that a good part is determined to be a defective part by mistake, and the yield can be improved.

5A to 5C, in the recording apparatus 13 in the present embodiment, ink (i) is adhered to at least an area inside the recording area S of the both-side bonded film F105 A cover 30 is provided to prevent the above- 5A is a plan view of the cover 30 viewed from the upper side of the double-sided adhesive film F105. 5B is a side view of the cover 30 viewed from the upstream side in the carrying direction of the double-sided adhesive film F105. 5C is a side view of the cover 30 viewed from the outside of the double-side bonded film F105.

Specifically, the cover 30 includes a first side plate portion (a second side plate portion) F105 covering the side facing the inside of the double-side bonded film F105 among the space K opposed to the double-side bonded film F105 and the print head 13a A second side plate portion 30b covering the upstream side in the carrying direction of the double-side bonded film F105 and a second side plate portion 30b covering the side facing the downstream side in the carrying direction of the double- And three side plate portions 30c.

The cover 30 is detachably attached to the print head 13a by means of screw fixing or the like. Since the side of the cover 30 facing the outside of the double-side bonded film F105 is open in the space K, the cover 30 is easily attached to and detached from the print head 13a.

The interval T between the surface of the cover 30 facing the double-sided adhesive film F105 and the surface of the double-sided adhesive film F105 can be set to 1 mm or less. By making the interval T equal to or smaller than 1 mm, it is possible to prevent the scattered matter of the ink i from scattering to the outside of the cover 30 when the ink i ejected from the print head 13a is scattered around . On the other hand, the above numerical values are merely examples, and the present invention is not limited thereto.

As the non-product of the ink (i), among the ink (i) ejected from the print head 13a, for example, ink (i) scattered around and deviating from the information recording position, And ink (i) scattered around later.

The recording area S is located outside the area overlapping with the display area P4 of the liquid crystal display panel P when the double-sided adhesive film F105 is bonded to the liquid crystal display panel P. [ The recording area S is an area which is cut off and removed before or after the liquid crystal display panel P is bonded.

The first side plate portion 30a out of the three side plate portions 30a, 30b and 30c constituting the cover 30 is provided with the ink i in the region overlapping the display region P4 of the double- Thereby preventing the non-product of the adhesive. On the other hand, the second side plate portion 30b prevents the non-produced ink of the ink (i) from adhering to the upstream side in the carrying direction of the both-side bonded film F105. On the other hand, the third side plate portion 30c prevents the non-produced ink of the ink (i) from adhering to the downstream side in the carrying direction of the both-side bonded film F105.

The non-product of the ink (i) is attached to the inner surface of the cover (30). Therefore, the cover 30 can be removed repeatedly from the print head 13a, cleaned, and then reattached to the print head 13a for repeated use.

The film production apparatus 100 may be provided with a static eliminator 40 for eliminating the surface of the double-sided adhesive film F105. The static eliminator 40 is called an ionizer and is disposed on the upstream side of the recording apparatus 13 (the print head 13a) in the conveying direction of the double-sided adhesive film F105. The static electricity removing device 40 removes static electricity generated on the surface of the double-sided bonded film F105 by blowing ionized gas over the entire width direction of the double-sided bonded film F105.

Thereby, in the film production apparatus 100, the inorganic matter of the ink (i) is prevented from being attracted to the surface of the double-side bonded film F105 by static electricity. Therefore, in the film production apparatus 100, by combining the cover 30 and the electrostatic eliminator 40 described above, it is possible to further suppress the deposition of the inorganic matter of the ink i on the surface of the double-side bonded film F105 It is possible.

As described above, in the defect inspection system 10 according to the present embodiment, it is possible to prevent contamination of the double-side bonded film F105 by scattering of the ink (i) when the defect information is recorded on the double-side bonded film F105 It is possible.

On the other hand, the present invention is not necessarily limited to the above embodiment, and various modifications can be made within the scope of the present invention.

Specifically, as for the cover 30, at least the first side plate portion 30a among the three side plate portions 30a, 30b, and 30c may be disposed. As a result, it is possible to prevent the non-product of the ink (i) from adhering to the region overlapping the display region P4 of the double-sided adhesive film F105.

As shown in Fig. 6, in addition to the three side plate portions 30a, 30b, and 30c, the cover 30 may include a fourth side plate portion 40b that covers the side facing the outside of the double- (30d) may be disposed.

As for the recording apparatus 13, for example, the print head 13a may be arranged to face the guide roll 41 as shown in Figs. 7A and 7B. In this case, the lower end of the cover 31 attached to the print head 13a has a shape conforming to the outer shape of the guide roll 41. Thereby, it is possible to make the interval T between the surface of the both-side bonded film F105 and the surface of the double-side bonded film F105 to 1 mm or less.

As another embodiment of the present invention, it is also possible to use a cover 32 as shown in Figs. 8A and 8B, for example. The cover 32 is made of a plate material in the form of a parallel flat plate and is arranged so as to be opposed to the both-side bonded film F105 in the state of being close to the both-side bonded film F105. In addition, a window portion (opening portion) 32a is formed at a position facing the recording area S of the cover 32. [ In the case of this configuration, the cover 32 covers the area other than the recording area S, whereby the double-side bonded film F105 is formed by scattering of the ink (i) when the defect information is recorded on the double-side bonded film F105. It is possible to prevent contamination. The cover 32 may be provided with the above-described side plate portions 30a, 30b, 30c, and 30d. In other words, the cover 32 may constitute a bottom plate portion that covers the bottom surface of the cover 30.

The recording apparatus 13 is disposed on the downstream side of the second defect inspection apparatus 12, but it may be disposed on the downstream side of the first defect inspection apparatus 11. [ In this case, it is possible to record defect information by the recording apparatus 13 after defect inspection by the first defect inspection apparatus 11 is performed.

Further, the recording apparatus 13 is not limited to recording the defect information after the above-described defect inspection. For example, in a long-distance conveyance line, a plurality of recording apparatuses are arranged, the distance information is recorded at a certain distance, and the distance is corrected based on the recorded distance information. The recording apparatus for recording the distance information may be disposed on the upstream side of the first defect inspection apparatus 11, for example. In a recording apparatus for recording such distance information, a cover similar to the cover (30, 31, 32) is provided on a print head of the recording apparatus, It is possible to prevent the film from being contaminated by scattering.

On the other hand, the film to which the embodiment of the present invention is applied is not necessarily limited to the above-mentioned optical film such as the polarizing film, the retardation film and the brightness enhancement film, and the film to be recorded by the recording apparatus 13 It is possible to broadly apply the embodiments of the present invention.

100: Film production apparatus 101: First conveying line
102: second conveying line 103: third conveying line
104: Fourth conveying line 105: Fifth conveying line
106: winding part 111a, 111b: first nip roll
112: first accumulator 112a, 112b: first dancer roll
113: first guide rolls 121a, 121b: second nip roll
122: second accumulator 122a, 122b: second dancer roll
123a, 123b: second guide roll 131a, 131b: third nip roll
141a, 141b: fourth nip roll 142: third accumulator
142a, 142b: third dancer rolls 143a, 143b: fourth guide roll
151a, 151b: fifth nip roll 152: fourth accumulator
152a, 152b: fourth dancer roll 153a: fifth guide roll
153b: sixth guide roll 10: defect inspection system
11: first defect inspection device 12: second defect inspection device
13: Recording device 13a: Printing head
14: first lateral organ 15: second lateral organ
16: Control device 21a, 22a, 23a, 24a, 25a:
21b, 22b, 23b, 24b, and 25b:
30: cover 30a: first side plate portion
30b: second side plate portion 30c: third side plate portion
30d: fourth side plate portion 31: cover
32: cover 32a: window
40: static eliminator P: liquid crystal display panel (optical display device)
F1X: Optical film F10X: Optical film
F101: first film F102: second film
F103: Third film F104: One-side bonded film
F105: Double-sided laminated film

Claims (8)

A transporting line for transporting the long strip-shaped film,
A defect inspection device for defect inspection of the film conveyed by the conveyance line,
And recording the defect information based on the defect inspection result on a film conveyed by the conveyance line
The recording apparatus comprising:
A print head for printing the defect information by discharging ink to a recording area along the edge portion of the film;
A cover for preventing ink from adhering to at least an area inside the recording area of the film
And a defect inspection system. The defect inspection system according to claim 1, wherein the cover has a first side plate portion that covers at least a side of the film facing the inside of the film, out of the space in which the print head and the print head are opposed. 3. The film processing apparatus according to claim 2, wherein the cover comprises: a second side plate portion that covers a side of the space that faces the upstream side in the transport direction of the film; and a second side plate portion that covers the side facing the downstream side of the film in the transport direction And a side plate portion. The defect inspection system according to claim 3, wherein the cover has a fourth side plate portion that covers a side of the space facing the outside of the film. The defect inspection system according to any one of claims 1 to 4, wherein the interval between the surface of the cover facing the film and the surface of the film is 1 mm or less. The defect inspection system according to any one of claims 1 to 5, wherein the cover is detachably attached to the print head. The defect inspection system according to claim 1, wherein the cover is disposed to face the film in a state of being close to the film, and has a window at a position facing the recording area. The electrophotographic apparatus according to any one of claims 1 to 7, further comprising a static eliminator disposed on an upstream side of the recording apparatus in the transport direction of the film to remove the surface of the film Inspection system.

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