KR102475056B1 - Defect marking method and defect marking apparatus, web manufacturing method and the web, and sheet manufacturing method and the sheet - Google Patents

Abstract

[PROBLEMS] To provide a defect marking method suitable for marking the location of a defect.
[Solution] A defect marking method for performing a defect inspection of an inspection object and marking a defective portion of the inspection object based on the defect inspection result, in another direction intersecting one direction in the plane of the inspection object. By printing the first printing pattern PT1 and the second printing pattern PT2 on the surface of the inspected object so that the defect D is located between the adjacent first printing pattern PT1 and the second printing pattern PT2. Mark the location of defect (D).

Description

Defect marking method and defect marking device, manufacturing method of disk, disk, and sheet manufacturing method and sheet

The present invention relates to a defect marking method and a defect marking device, a master manufacturing method and master, and a sheet manufacturing method and sheet.

For example, in the manufacturing process of a long strip-shaped master such as a resin film or paper, a master defect inspection is performed while the master is conveyed, and based on the defect inspection result, the defective portion of the master is marked (hereinafter referred to as defect marking. ) is being implemented (see, for example, Patent Literatures 1 to 4).

Further, in the manufacturing process of an optical film (sheet) such as a polarizing plate used in a liquid crystal display panel, information on defects such as the position, type, size, and inspection method of the defect (hereinafter referred to as defect information) is provided to the optical film. Recording (printing) is also performed using a printing head in a specific area (hereinafter referred to as a recording area) along the edge portion.

The optical film is wound around the core after completion of recording of defect information, and when the amount of winding reaches a certain amount, it is separated from the optical film on the upstream side in the conveying direction and shipped as a film roll. From the original roll, sheets (chips) cut in a predetermined size and direction according to product specifications are cut out. In addition, defective parts are excluded from the product and destroyed.

Patent Document 1: Japanese Unexamined Patent Publication No. 2001-305070 Patent Document 2: Japanese Unexamined Patent Publication No. 2002-303580 Patent Document 3: Japanese Unexamined Patent Publication No. 2011-102985 Patent Document 4: Japanese Unexamined Patent Publication No. 2014-16217

By the way, in the conventional defect marking described above, when a defective part is cut out from a master, by cutting between the marking and the defect, it is possible to determine where the defect is located on the side cut out by cutting and the side left by cutting, after cutting. There was a case where the defect location became unclear.

In addition, in the invention described in Patent Literature 2, the defective portion is marked by attaching a scratch mark. However, when a scar mark is applied, it is impossible to erase the scar mark after defect inspection. In this case, defective parts may be accepted as products by visual inspection (inspection) after marking. However, when a scratch mark is attached, it cannot be used as a product.

On the other hand, in the conventional defect marking described above, it is common to mark only the location of the defect by marking the defect portion. Therefore, in the conventional defect marking, the above defect information is not recorded. For this reason, when defect information is required, for example, when reviewing a film roll before shipment, it is necessary to separately record the defect information in a recording area or the like.

The present invention has been proposed in view of such conventional circumstances, and aims to provide a defect marking method and a defect marking device suitable for marking the location of a defect, a method for manufacturing a disk and a disk, and a method for manufacturing a sheet and a sheet. do.

As a means for solving the above problems, according to an aspect of the present invention, a defect marking method for marking a defective portion of an object to be inspected, adjacent in another direction intersecting one direction in the plane of the object to be inspected There is provided a defect marking method characterized in that the first printing pattern and the second printing pattern are printed on the surface of the inspection object so that the defect is located between the first printing pattern and the second printing pattern.

Further, in the defect marking method of the above aspect, a method of recording the defect-related information by one or both of the first printing pattern and the second printing pattern may be used.

In the defect marking method of the above aspect, a method of printing at least one or a plurality of dot-shaped marks side by side in one direction may be used as one or both of the printing patterns.

Further, in the defect marking method of the above aspect, a method of printing at least one or a plurality of linear marks in parallel in one direction may be used as one or both of the above printing patterns.

Further, in the defect marking method of the above aspect, a method may be used in which information on the defect is recorded by changing any one or more of the number, spacing, size, and color of the marks.

Furthermore, in the defect marking method of the above aspect, the location of the defect in the one direction may be indicated by a printing pattern in which the spacing of at least a part of the plurality of marks parallel to the one direction is changed.

Further, in the defect marking method of the above aspect, the position of the defect in the one direction is determined by arranging a space adjacent to the defect by arranging a space between at least a part of the plurality of marks parallel to the one direction. Any way to display it is fine.

Further, in the defect marking method of the above aspect, in the other direction, by printing a third printing pattern adjacent to one or both of the first printing pattern and the second printing pattern, thereby recording information about the defect Any method is good.

Further, in the defect marking method of the above aspect, a method may be used in which information relating to other than the defect is recorded using any of the above printing patterns.

In the defect marking method of the above aspect, a method of printing the printing pattern using an erasable ink may be used.

Further, in the defect marking method of the above aspect, a method of marking a defective portion of a long belt-shaped master conveyed in the one direction as the inspected object may be used.

Further, in the defect marking method of the above aspect, a method of marking a defective portion of a sheet obtained by cutting a long strip-shaped disk as the inspection object may be used.

Further, according to an aspect of the present invention, between the step of inspecting defects for a long strip-shaped master conveyed in one direction, and conveying the master in one direction using any of the above defect marking methods, A method for manufacturing a master is provided, comprising a step of marking a defective portion of the master based on the defect inspection result.

Further, according to an aspect of the present invention, a step of performing a defect inspection on a sheet obtained by cutting a long strip-shaped disk, and marking the defective portion of the sheet based on the defect inspection result using any of the above defect marking methods There is provided a method for manufacturing a sheet comprising a step of performing.

Further, according to an aspect of the present invention, a printing device for marking a defective portion of an object to be inspected is provided, and the printing device has a predetermined interval in another direction intersecting one direction in the surface of the object to be inspected. In addition to being arranged side by side, it has a plurality of printing units for printing a printing pattern on the surface of the inspection object, and a control unit for controlling driving of the plurality of printing units, wherein the control unit is adjacent to each other in the different direction. A defect marking apparatus characterized in that control is performed to select a printing part for printing the first printing pattern and the second printing pattern so that the defect is located between the printing pattern and the second printing pattern.

Further, in the defect marking device of the above aspect, the control unit determines the first printed pattern and the second printed pattern according to the information on the defect to be recorded with respect to either or both of the selected printing portions. A configuration for performing control to change either or both of the printing patterns may be used.

In the defect marking device of the above aspect, at least one or a plurality of dot-shaped marks may be printed side by side in one direction as one or both of the printing patterns.

Furthermore, the defect marking device of the above aspect may have a structure in which at least one or a plurality of linear marks are printed side by side in one direction as one or both of the above printing patterns.

In the defect marking device of the above aspect, any one or more of the number, spacing, size, and color of the marks may be changed.

Further, in the defect marking device of the above aspect, the controller may be configured to perform control to change the spacing of at least a part of a plurality of marks aligned in the one direction with respect to any one of the selected printing portions.

Further, in the defect marking device of the above aspect, the control unit arranges, for any of the selected printing portions, a blank space vacated between at least a part of a plurality of marks parallel to the one direction at a position adjacent to the defect A configuration for performing control may be used.

Further, in the defect marking device of the above aspect, the control unit selects a printing unit for printing a third printing pattern adjacent to either or both of the first printing pattern and the second printing pattern in the other direction. and control for changing the third printing pattern in accordance with the information on the defect to be recorded for one or both of the selected printing units may be configured.

Further, in the defect marking device of the above aspect, the control unit may be configured to perform control to change a certain printing pattern in accordance with information relating to other than the defect to be recorded with respect to any of the selected printing sections.

Further, according to an aspect of the present invention, a defect inspection device for inspecting defects on a long strip-shaped master conveyed in one direction, and any one of the above defect marking devices are provided, and the master is conveyed in the one direction. In the meantime, there is provided a disk manufacturing apparatus characterized in that marking is performed on a defective part of the disk based on the defect inspection result.

Further, according to an aspect of the present invention, a defect inspection device for performing a defect inspection on a sheet obtained by cutting a long strip-shaped disk, and any one of the above defect marking devices is provided, and based on the defect inspection result, defects in the sheet are detected. An apparatus for manufacturing a sheet characterized in that a site is marked is provided.

Further, according to an aspect of the present invention, a long strip-shaped disc on which a defective portion is marked, and printed on the surface by the marking, the first printing pattern and the second printing pattern adjacent in the short longitudinal direction are formed. and a defect is positioned between the first printed pattern and the second printed pattern so that the location of the defect is marked.

Further, the master of the above aspect may have a structure in which information on the defect is recorded by one or both of the first printing pattern and the second printing pattern.

In the master of the above aspect, at least one or a plurality of dot-shaped marks may be printed side by side in the longitudinal direction as one or both of the printing patterns.

In the master of the above aspect, at least one or a plurality of linear marks as one or both of the printing patterns may be printed side by side in the longitudinal direction.

Further, in the master of the above aspect, any one or more of the number, spacing, size, and color of the marks may be changed.

Further, in the master of the above aspect, the position of the defect in the longitudinal direction may be indicated by a printing pattern in which intervals of at least a part of the plurality of marks parallel to the longitudinal direction are changed.

Further, in the disk of the above aspect, the position of the defect in the longitudinal direction is displayed by arranging a space adjacent to the defect by arranging a space between at least a part of the plurality of marks parallel to the longitudinal direction, Any composition is fine.

Further, the master of the above aspect has a third printed pattern adjacent to one or both of the first printed pattern and the second printed pattern in the short length direction, and the defect is formed by the third printed pattern. It may be a structure in which information related to is recorded.

Further, the master of the above aspect may have a structure in which information on things other than the defects is recorded by any of the above printing patterns.

Further, in the master of the above aspect, the configuration may be such that the printing pattern is printed with erasable ink.

In addition, according to an aspect of the present invention, a sheet on which a defective portion is marked, printed on a surface by the marking, and the first printed pattern and the second printed pattern adjacent in another direction crossing one direction , wherein the location of the defect is indicated by the location of the defect between the first printed pattern and the second printed pattern.

In the sheet of the above aspect, the defect-related information may be recorded by either or both of the first printed pattern and the second printed pattern.

In the sheet of the above aspect, at least one or a plurality of dot-shaped marks may be printed side by side in one direction as one or both of the printing patterns.

In the sheet of the above aspect, at least one or a plurality of linear marks as one or both of the printing patterns may be printed side by side in one direction.

In the sheet of the above aspect, any one or more of the number, spacing, size, and color of the marks may be changed.

In the sheet of the above aspect, the position of the defect in the one direction may be indicated by a printing pattern in which the intervals of at least a part of the plurality of marks parallel to the one direction are changed.

Further, in the sheet of the above aspect, the position of the defect in the one direction is indicated by arranging a blank space between at least a part of the plurality of marks parallel to the one direction at a position adjacent to the defect. Even the composition is good.

Further, the sheet of the above aspect has a third printed pattern adjacent to one or both of the first printed pattern and the second printed pattern in the other direction, and the defect is prevented by the third printed pattern. A structure in which pertinent information is recorded may be used.

Further, the sheet of the above aspect may have a configuration in which information relating to other than the defects is recorded by any of the above printing patterns.

In the sheet of the above aspect, the configuration may be such that the printing pattern is printed with erasable ink.

As described above, according to the aspect of the present invention, it is possible to provide a defect marking method and a defect marking device suitable for marking the position of a defect, a manufacturing method and master of a master, and a method of manufacturing a sheet and a sheet.

1 is a plan view showing an example of a liquid crystal display panel.
FIG. 2 is a cross-sectional view of the liquid crystal display panel shown in FIG. 1 .
3 is a cross-sectional view showing an example of an optical film.
Fig. 4 is a side view showing the construction of a film manufacturing device and a defect marking device.
Fig. 5 is a plan view showing the configuration of the defect marking device shown in Fig. 4;
Fig. 6 is a plan view showing an example of a first printing pattern and a second printing pattern printed with dot-shaped marks.
Fig. 7 is a plan view showing an example of a first printing pattern and a second printing pattern printed with linear marks.
8 is a plan view showing an example in which a third printing pattern is added.
Fig. 9 is a plan view illustrating the difference between the types of defects and their printing patterns.
10 is a cross-sectional view showing defects generated in the first manufacturing process and the second manufacturing process.
11 is a plan view showing examples of first and second printed patterns printed with respect to defects generated in the first manufacturing process and the second manufacturing process.
Fig. 12 is a plan view showing modified examples of the first and second printing patterns.
13 is a plan view illustrating a combination of printing patterns.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail with reference to drawings.

In this embodiment, for example, as a production system for an optical display device, a film manufacturing apparatus (original manufacturing apparatus) constituting a part thereof and a film manufacturing method (original manufacturing method) using the film manufacturing apparatus will be described.

The film manufacturing apparatus is, for example, a film-type optical member (optical film ) to manufacture. A film manufacturing device constitutes a part of a production system that produces optical display devices including such optical display components and optical members.

In this embodiment, a transmissive liquid crystal display device is exemplified as an optical display device. A transmissive liquid crystal display device generally includes a liquid crystal display panel and a backlight. In this liquid crystal display device, an image can be displayed by entering illumination light emitted from a backlight from the back side of the liquid crystal display panel and emitting light modulated by the liquid crystal display panel from the front side of the liquid crystal display panel.

(optical display device)

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

As shown in FIGS. 1 and 2 , the liquid crystal display panel P includes a first substrate P1, a second substrate P2 disposed to face the first substrate P1, and a first substrate ( A liquid crystal layer P3 disposed between P1) and the second substrate P2 is roughly provided.

The first substrate P1 is formed of a transparent substrate having a rectangular shape when viewed in plan. The second substrate P2 is made of a transparent substrate having a relatively smaller rectangular shape than the first substrate P1. The liquid crystal layer P3 is formed by sealing the periphery between the first substrate P1 and the second substrate P2 with a sealant (not shown), and forming a rectangle in plan view surrounded by the sealant. It is placed inside. In the liquid crystal display panel P, a region converging inside the outer periphery of the liquid crystal layer P3 in a plan view is referred to as the display region P4, and an outer region surrounding the periphery of the display region P4 is the frame portion. (G).

On the back surface (backlight side) of the liquid crystal display panel P, a first optical film F11 as a polarizing film and a third optical film F13 as a luminance enhancing film overlaid on the first optical film F11 are sequentially laminated. and are connected. The 2nd optical film F12 as a polarizing film is bonded to the surface (display surface side) of liquid crystal display panel P. Hereinafter, the first, second, and third optical films F11, F12, and F13 may be collectively referred to as the 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. Here, FIG. 3 is a sectional view showing the structure of the optical sheet FX. On the other hand, in FIG. 3, illustration of hatching showing a cross section is omitted.

The optical film F1X is obtained by cutting out a sheet piece (chip) of a predetermined length from the long strip-shaped optical sheet (original sheet) FX shown in FIG. 3 . Specifically, this optical sheet FX is a substrate sheet through a substrate sheet F4, an adhesive layer F5 provided on one surface of the substrate sheet F4 (upper surface in Fig. 3), and the adhesive layer F5. It has separator sheet F6 provided on one surface of (F4) and surface protection sheet F7 provided on the other surface (lower surface in FIG. 3) of base material sheet F4.

In the case of a polarizing film, for example, the base sheet F4 has a structure in which a pair of protective films F4b and F4c sandwich the polarizer F4a. The adhesion layer F5 adheres the sheet piece (optical film F1X) to the liquid crystal display panel P. The separator sheet F6 protects the adhesion layer F5, and peels from the adhesion layer F5 before bonding a sheet piece (optical film F1X) to liquid crystal display panel P. In addition, the part remove|excluding separator sheet F6 from optical film F1X turns into bonding sheet|seat F8.

The surface protection sheet F7 protects the surface of the base sheet F4. The surface protection sheet F7 is peeled from the surface of the sheet piece (optical film F1X) after the sheet piece (optical film F1X) is adhered to the liquid crystal display panel P.

In addition, regarding the base material sheet F4, it is good also as a structure which abbreviated any one of a pair of protective films F4b and F4c. For example, the protective film F4b on the side of the adhesive layer F5 may be omitted, and the adhesive layer F5 may be formed directly on the polarizer F4a. In addition, the protective film F4c on the side of the surface protection sheet F7 is subjected to a surface treatment such as, for example, a hard coat treatment to protect the outermost surface of the liquid crystal display panel P or an antiglare treatment to obtain an anti-glare effect. It may be. In addition, regarding the base material sheet F4, it is not limited to what became the above-mentioned laminated structure, and what became a single-layer structure may be sufficient. It is also possible to omit the surface protection sheet F7.

(Film manufacturing device and film manufacturing method)

Next, the film manufacturing apparatus 100 shown in FIG. 4 is demonstrated. Here, FIG. 4 is a side view showing the structure of the film manufacturing apparatus 100. As shown in FIG.

As shown in FIG. 4 , the film manufacturing apparatus 100 is, for example, a long strip-shaped first film F101 made of a polarizing film, on one side of a long strip-shaped second film made of a surface protection film ( After bonding F102), the long strip-shaped 3rd film F103 used as a surface protection film is bonded to the other surface of the 1st film F101, and the 2nd film F102 is attached to both surfaces of the 1st film F101. ) and the third film (F103) are bonded together to produce an optical film (F10X).

Specifically, this film manufacturing apparatus 100 includes a first conveying line 101, a second conveying line 102, a third conveying line 103, a fourth conveying line 104, a fifth conveying line 105, A winding section 106 is generally provided.

Among them, the first conveyance line 101 forms a conveyance path for conveying the first film F101, and the second conveyance line 102 forms a conveyance path for conveying the second film F102 unwound from the first film roll R1. ), and the third conveyance line 103 forms a conveyance route for conveying the single-sided bonding film F104 in which the second film F102 is bonded to one side of the first film F101. And, the 4th conveyance line 104 forms the conveyance path which conveys the 3rd film F103 unwound from the 2nd film roll R2, and the 5th conveyance line 105 forms the single-sided bonding film F104 The conveyance path which conveys the double-sided bonding film F105 (optical film F10X) in which the 3rd film F103 was bonded to the surface (the other surface of the 1st film F101) on the side of the 1st film F101 of this are forming And manufactured optical film F10X is wound up by the core material as 3rd film roll R3 in the winding-up part 106.

In the first conveyance line 101, for example, after performing a dyeing treatment, crosslinking treatment, stretching treatment, etc. to a film serving as a base material of a polarizer such as PVA (Polyvinyl Alcohol), TAC (Triacetylcellulose) or the like is protected on both sides thereof. It is directed toward the 3rd conveyance line 103 and conveys the long strip-shaped 1st film F101 obtained by bonding a film.

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

A pair of 1st nip-roll 111a, 111b rotates in a mutually reverse direction, pinching the 1st film F101 in between, 1st film F101 in the direction of arrow a shown in FIG. 4 (right direction) ) is to withdraw.

The 1st accumulator 112 is for reducing the fluctuation|variation of the tension applied to the 1st film F101 while absorbing the difference by the fluctuation|variation of the conveyance amount of the 1st film F101. Specifically, the first accumulator 112 is between the first nip rolls 111a and 111b and the first guide roll 113, a plurality of dancer rolls 112a located on the upper side and a lower side located on the lower side It has a configuration in which a plurality of dancer rolls 112b are alternately arranged side by side.

In the 1st accumulator 112, while conveying the 1st film F101 in the state where the 1st film F101 was alternately caught by the upper dancer roll 112a and the lower dancer roll 112b, the upper side The dancer roll 112a of the lower side and the dancer roll 112b of the lower side are moved up and down relatively. Thereby, it is becoming possible to accumulate the 1st film F101, without stopping the 1st conveyance line 101. For example, in the first accumulator 112, the accumulation of the first film F101 is increased by increasing the distance between the dancer roll 112a on the upper side and the dancer roll 112b on the lower side, while the dancer roll on the upper side is increased. The accumulation of the first film F101 can be reduced by narrowing the distance between 112a and the dancer roll 112b on the lower side. The first accumulator 112 is operated, for example, during operations such as splicing after exchanging the core materials of the film rolls R1 to R3.

The 1st guide roll 113 guides the 1st film F101 pulled out by 1st nip roll 111a, 111b toward the upstream side of the 3rd conveyance line 103, rotating. In addition, the structure in which the 1st guide roll 113 arrange|positioned not only one but multiple arrangement|positioning may be sufficient as one.

The second conveyance line 102 is the third conveyance line 103 while unwinding the long strip-shaped second film F102 made of a surface protection film such as PET (Polyethylene terephthalate) from the first film roll R1. It is to send it back towards.

Specifically, in this second conveyance line 102, a pair of second nip rolls 121a, 121b toward the third conveyance line 103 from the other side with the upstream side of the third conveyance line 103 interposed therebetween And, the second accumulator 122 including a plurality of second dancer rolls 122a and 122b, and a plurality of second guide rolls 123a and 123b are sequentially arranged side by side in the horizontal direction.

A pair of 2nd nip-roll 121a, 121b rotates mutually in reverse direction, pinching the 2nd film F102 in between, and the 2nd film (in the direction of the arrow b shown in FIG. 4 (left direction)) F102) is withdrawn.

The 2nd accumulator 122 is for absorbing the difference by the fluctuation of the conveyance amount of the 2nd film F102, and reducing the fluctuation|variation of the tension applied to the 2nd film F102. Specifically, the second accumulator 122 is between the second nip rolls 121a and 121b and the second guide rolls 123a and 123b, between the plurality of dancer rolls 122a located on the upper side and the lower side. It has a configuration in which a plurality of positioned dancer rolls 122b are alternately arranged side by side.

In the 2nd accumulator 122, while conveying the 2nd film F102 in the state where the 2nd film F102 was alternately caught by the upper dancer roll 122a and the lower dancer roll 122b, the upper side The dancer roll 122a of the lower side and the dancer roll 122b of the lower side are moved up and down relatively. This makes it possible to accumulate the second film F102 without stopping the second conveyance line 102 . For example, in the second accumulator 122, the accumulation of the second film F102 is increased by increasing the distance between the dancer roll 122a on the upper side and the dancer roll 122b on the lower side, while the dancer roll on the upper side increases. The accumulation of the second film F102 can be reduced by narrowing the distance between 122a and the dancer roll 122b on the lower side. The second accumulator 122 is operated, for example, during operations such as splicing after exchanging the core materials of the film rolls R1 to R3.

The plurality of second guide rolls 123a and 123b guide the second film F102 pulled out by the second nip rolls 121a and 121b toward the upstream side of the third conveyance line 103 while rotating, respectively. . Here, the structure in which only one 2nd guide roll 123a, 123b was arrange|positioned may be sufficient as not limited to the structure arrange|positioned in multiple numbers.

The 3rd conveyance line 103 conveys the long strip-shaped single-sided bonding film F104 which bonded the 2nd film F102 to one side of the 1st film F101 toward the 5th conveyance line 105 will be.

Specifically, a pair of third nip rolls 131a and 131b are disposed on the third conveyance line 103 . A pair of 3rd nip rolls 131a, 131b is located at the junction of the downstream side of the 1st conveyance line 101 and the downstream side of the 2nd conveyance line 102, and the 1st film F101 and The direction of arrow c which shows in FIG. 4 the single-sided bonding film F104 which bonded the 1st film F101 and the 2nd film F102 by rotating in a mutually reverse direction, pinching|interposing the 2nd film F102 (downward direction) ) to be withdrawn.

The fourth conveying line 104 is the fifth conveying line 105 while unwinding the long strip-shaped third film F103 made of a surface protection film such as PET (Polyethylene terephthalate) from the second film roll R2. It is to send it back towards.

Specifically, in this fourth conveyance line 104, from one side across the downstream side of the third conveyance line 103 toward the third conveyance line 103, a pair of fourth nip rolls 141a, 141b and a plurality of third accumulators 142 including a plurality of third dancer rolls 142a and 142b, and a plurality of fourth guide rolls 143a and 143b are sequentially arranged side by side in the horizontal direction.

A pair of 4th nip-roll 141a, 141b rotates mutually in reverse direction, pinching the 3rd film F103 in between, and the 3rd film (in the direction of the arrow d shown in FIG. 4 (right direction)) ( F103) is withdrawn.

The 3rd accumulator 142 is for absorbing the difference by the fluctuation|variation of the transfer amount of the 3rd film F103, and reducing the fluctuation|variation of the tension applied to the 3rd film F103. Specifically, the third accumulator 142 is between the fourth nip rolls 141a and 141b and the fourth guide rolls 143a and 143b, between the plurality of dancer rolls 142a located on the upper side and the lower side. It has a configuration in which a plurality of positioned dancer rolls 142b are alternately arranged side by side.

In the 3rd accumulator 142, while conveying the 3rd film F103 in the state where the 3rd film F103 was alternately caught by the upper dancer roll 142a and the lower dancer roll 142b, the upper side The upper and lower dancer rolls 142a and the lower side dancer rolls 142b are moved up and down relatively. This makes it possible to accumulate the third film F103 without stopping the fourth conveyance line 104 . For example, in the third accumulator 142, the accumulation of the third film F103 is increased by widening the distance between the upper dancer roll 142a and the lower dancer roll 142b, while the upper dancer roll By narrowing the distance between 142a and the dancer roll 142b on the lower side, accumulation of the third film F103 can be reduced. The third accumulator 142 is operated, for example, during operations such as splicing after exchanging the core materials of the film rolls R1 to R3.

A plurality of 4th guide rolls 143a and 143b, the 3rd film F103 pulled out by the 4th nip rolls 141a and 141b while rotating, respectively, the downstream side of the 3rd conveyance line 103 (5th conveyance upstream of the line 105). Here, the structure in which 4th guide roll 143a, 143b is arrange|positioned only one is not limited to the structure arrange|positioned in multiple numbers may be sufficient.

The 5th conveyance line 105 bonded the 3rd film F103 to the surface (the other surface of the 1st film F101) on the side of the 1st film F101 of the single-sided bonding film F104, both sides of the long strip|strip. It is conveying the bonding film F105 (optical film F10X) toward the 3rd film roll R3.

Specifically, in this 5th conveyance line 105, from the other side across the downstream side of the 3rd conveyance line 103, toward the 3rd film roll R3, a pair of 5th nip rolls 151a, 151b And, the fourth accumulator 152 including a fifth guide roll 153a, a pair of sixth nip rolls 151c and 151d, and a plurality of fourth dancer rolls 152a and 152b, and a sixth guide The rolls 153b are sequentially arranged side by side in the horizontal direction.

A pair of 5th nip rolls 151a, 151b are located at the junction of the downstream side of the 3rd conveyance line 103 and the upstream side of the 5th conveyance line 105, and the single-sided bonding film F104 and The double-sided bonding film F105 which bonded the single-sided bonding film F104 and the 3rd film F103 by rotating in a mutually reverse direction while pinching the 3rd film F103 is shown in the direction of the arrow e shown in FIG. 4 (downward direction) ) to be withdrawn.

The 5th guide roll 153a guides the double-sided bonding film F105 pulled out by 5th nip roll 151a, 151b toward the 4th accumulator 152, rotating. Here, the structure in which only one fifth guide roll 153a is arranged may be arranged in multiple numbers.

A pair of 6th nip-roll 151c, 151d rotates mutually in reverse direction, sandwiching double-sided bonding film F105 in between, and double-sided bonding film in the direction (right direction) of arrow f shown in FIG. 4 ( F105) is withdrawn.

In the 4th accumulator 152, the upper side while conveying the double-sided bonding film F105 in the state where the double-sided bonding film F105 was alternately hung by the dancer roll 152a of the upper side and the dancer roll 152b of the lower side, The dancer roll 152a of the lower side and the dancer roll 152b of the lower side are moved up and down relatively. Thereby, the double-sided bonding film F105 can be accumulated, without stopping the 5th conveyance line 105. For example, in the 4th accumulator 152, while the accumulation|storage of the double-sided bonding film F105 is increased by widening the distance between the upper side dancer roll 152a and the lower side dancer roll 152b, the upper side dancer roll Accumulation of the double-sided bonding film F105 can be reduced by narrowing the distance between 152a and the dancer roll 152b on the lower side. The 4th accumulator 152 is operated at the time of work, such as splicing after exchanging the core material of film rolls R1-R3, for example.

The 6th guide roll 153b guides the double-sided bonding film F105 toward 3rd film roll R3. Here, the 6th guide roll 153b is not limited to the structure arrange|positioned only one, and the structure arrange|positioned in multiple numbers may be sufficient as it.

After the double-sided bonding film F105 is wound up on a core material as 3rd film roll R3 of optical film F10X in the winding-up part 106, it is sent to the next process.

(defect marking device and defect marking method)

Next, the defect marking device 10 provided in the film manufacturing apparatus 100 and a defect marking method using the defect marking device 10 will be described.

As shown in FIG. 4, the defect marking device 10 constitutes a part of the film manufacturing device 100, and includes a conveyance line L, a first defect inspection device 11, and a second defect inspection device. The device 12, the recording device 13, the first length measuring device 14, the second measuring device 15, and the control device 16 are generally provided and configured.

The transport line L forms a transport path for transporting a film to be inspected, and in this embodiment, the first transport line 101, the third transport line 103, and the fifth transport line 105 The conveying line (L) is constituted by.

The 1st defect inspection apparatus 11 inspects the defect of the 1st film F101 before the 2nd film F102 and the 3rd film F103 are bonded together. Concretely, this 1st defect inspection apparatus 11 detects various defects, such as a foreign material defect, a concavo-convex defect, and a bright point defect, which arose when manufacturing the 1st film F101 or conveying the 1st film F101. The 1st defect inspection apparatus 11 performs inspection processing, such as reflection inspection, transmission inspection, oblique transmission inspection, orthogonal Nicols transmission inspection, etc., for the 1st film F101 conveyed by the 1st conveyance line 101, for example. By executing, the defect of the 1st film F101 is detected.

In the 1st defect inspection apparatus 11, in the 1st conveyance line 101, some illumination part 21a which irradiates illumination light to the 1st film F101 more upstream than 1st nip-roll 111a, 111b , 22a, 23a) and a plurality of photodetectors 21b, 22b, 23b for detecting light transmitted through the first film F101 (transmitted light) or reflected light from the first film F101 (reflected light), and have.

In the present embodiment, for the configuration of detecting the transmitted light, a plurality of lighting units 21a, 22a, 23a and photodetector units 21b, 22b, 23b arranged in parallel in the conveying direction of the first film F101 are respectively provided for the first film ( F101) are placed opposite to each other with interposed between them. In addition, in the 1st defect inspection apparatus 11, it is not limited to the structure which detects such a transmitted light, and a structure which detects reflected light, or a structure which detects transmitted light and reflected light may be sufficient. In the case of detecting the reflected light, the photodetectors 21b, 22b, and 23b may be disposed on the side of the lighting units 21a, 22a, and 23a.

Illumination part 21a, 22a, 23a irradiates the 1st film F101 with illumination light whose light intensity, wavelength, polarization state, etc. were adjusted according to the type of defect inspection. Photodetector parts 21b, 22b, and 23b take an image of the position where the illumination light of the 1st film F101 was irradiated using imaging elements, such as CCD. Images (defect inspection results) picked up by the photodetectors 21b, 22b, and 23b are output to the control device 16.

The 2nd defect inspection apparatus 12 inspects the defect of the 1st film F101 after the 2nd film F102 and the 3rd film F103 were bonded, ie, the double-sided bonding film F105. Specifically, this 2nd defect inspection apparatus 12 is used when bonding the 2nd film F102 and the 3rd film F103 to the 1st film F101, or the single-sided bonding film F104 and the double-sided bonding film F105 Various defects such as foreign matter defects, concavo-convex defects, bright point defects, etc., which occurred during conveyance are detected. The 2nd defect inspection apparatus 12 performs inspection processing, such as reflection inspection, transmission inspection, oblique transmission inspection, orthogonal Nicols transmission inspection, etc., for the double-sided bonding film F105 conveyed by the 5th conveyance line 105, for example. The defect of double-sided bonding film F105 is detected by carrying out.

The 2nd defect inspection apparatus 12 is some illumination part 24a which irradiates illumination light to the double-sided bonding film F105 downstream rather than 5th nip-roll 151a, 151b in the 5th conveyance line 105 , 25a) and a plurality of photodetector parts 24b and 25b for detecting light transmitted through the double-sided bonding film F105 (transmitted light) or reflected light from the double-sided bonding film F105 (reflected light).

In this embodiment, for the structure which detects transmitted light, the some lighting part 24a, 25a and light detection part 24b, 25b which are parallel in the conveyance direction of double-sided bonding film F105 each hold double-sided bonding film F105 between them. are placed opposite to each other. Moreover, in the 2nd defect inspection apparatus 12, it is not limited to the structure which detects such a transmitted light, and a structure which detects reflected light, or a structure which detects transmitted light and reflected light may be sufficient. In the case of detecting the reflected light, the photodetectors 24b and 25b may be disposed on the side of the lighting units 24a and 25a.

Illumination part 24a, 25a irradiates the double-sided bonding film F105 with the illumination light whose light intensity, wavelength, polarization state, etc. were adjusted according to the kind of defect inspection. Photodetection parts 24b and 25b image the image of the position to which the illumination light of the double-sided bonding film F105 was irradiated using imaging elements, such as CCD. Images (defect inspection results) picked up by the photodetectors 24b and 25b are output to the control device 16 .

The recording device 13 is a printing device that marks a defective portion based on the defect inspection results of the first defect inspection device 11 and the second defect inspection device 12 . The recording device 13 is provided downstream of the second defect inspection device 12 in the fifth conveyance line 105 . The recording device 13 has a plurality of printing heads 13a employing, for example, an inkjet method. Here, what employ|adopted the laser system about the printing head 13a may be sufficient.

As shown in FIG. 5, several print head 13a is arrange|positioned side by side in the direction (cross direction) which intersects the conveyance direction of double-sided bonding film F105. Moreover, in each printing head 13a, the nozzle part (printing part) 13b which discharges ink is arrange|positioned side by side at predetermined intervals in the direction (width direction) crossing the conveyance direction of the double-sided bonding film F105, have. The nozzle part 13b of each printing head 13a opposes the double-sided bonding film F105, and is arrange|positioned side by side at equal intervals over the other end side from the one end side of the width direction of the double-sided bonding film F105.

Moreover, the 7th guide roll 153c which contact|connects the double-sided bonding film F105 is arrange|positioned at the position facing the some printing head 13a. And the nozzle part 13b of each printing head 13a applies ink toward the surface of the double-sided bonding film F105 from the side opposite to the position which contacts the 7th guide roll 153c of the double-sided bonding film F105. Discharge. Thereby, it becomes possible to print (mark) a dot-shaped mark on the surface of the double-sided bonding film F105.

The first length measuring device 14 and the second length measuring device 15 measure the conveyance amount of the first film F101. Specifically, in this embodiment, in the first conveyance line 101, the rotary encoder constituting the first lengthening machine 14 on the first nip roll 111a on the upstream side of the first accumulator 112; The rotary encoder constituting the second length measuring machine 15 is disposed on the third nip roll 131a on the downstream side of the first accumulator 112 .

The first lengthening machine 14 and the second lengthening machine 15 have rotary encoders according to the amount of rotational displacement of the first nip roll 111a and the third nip roll 131a rotating in contact with the first film F101. The conveyance amount of the 1st film F101 is measured. The measurement results of the first measuring instrument 14 and the second measuring instrument 15 are output to the control device 16 .

Further, in the present embodiment, since there is only one accumulator between the first defect inspection device 11 and the recording device 13, the lengthening device is arranged one by one on the upstream side and the downstream side of this accumulator. have. On the other hand, when there are a plurality of accumulators between the first defect inspection device 11 and the recording device 13, the upstream side of the most upstream accumulator and the downstream side of the most downstream accumulator. It is sufficient to have a configuration in which the organs are arranged one by one.

The control device 16 controls the respective parts of the film production device 100 collectively. Specifically, this control device 16 has a computer system as an electronic control device. A computer system generally includes an arithmetic processing unit such as a CPU and an information storage unit such as a memory or a hard disk.

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

The control device 16 drives the nozzle portions 13b of the plurality of printing heads 13a based on the defect inspection results of the first defect inspection device 11 and the second defect inspection device 12 described above. It functions as a controlling controller. That is, the control device 16 analyzes the images captured by the photodetectors 21b, 22b, 23b and the photodetectors 24b, 25b to determine the presence (position) or type of defects. And when it determines that a defect exists in the 1st film F101 or the double-sided bonding film F105, the drive of the nozzle part 13b concerned is controlled, and the defective part of the double-sided bonding film F105 is marked. Defect marking is performed.

Moreover, in the defect marking apparatus 10, defect marking is performed at predetermined timing after a defect inspection so that a shift|offset|difference may not arise between the defect inspection position of double-sided bonding film F105 and the marking position of a defect site. For example, in this embodiment, the conveyance amount of the film conveyed on the conveyance line L is calculated after the time when the defect inspection by the first defect inspection apparatus 11 or the second defect inspection apparatus 12 is performed, and the calculated When the conveying amount coincides with the offset distance, defect marking is performed by the recording device 13 .

Here, the offset distance refers to the transport distance of the film between the first defect inspection device 11 and the second defect inspection device 12 and the recording device 13 . Strictly speaking, the offset distance is the position where defect inspection is performed by the first defect inspection device 11 and the second defect inspection device 12 (defect inspection position) and the location where marking is performed by the recording device 13 ( It is defined as the transport distance of the film between the marking positions). Also, the offset distance is changed when the first accumulator 112 is operated.

The offset distance at the time of non-operation of the first accumulator 112 (hereinafter, referred to as the first offset distance) is stored in advance in the information storage unit of the control device 16 . Specifically, a plurality of photodetectors 21b, 22b, 23b and photodetectors 24b, 25b exist in the first defect inspection device 11 and the second defect inspection device 12, and the photodetectors 21b, 22b , 23b, 24b, 25b), a defect inspection is performed. For this reason, the 1st offset distance is memorize|stored in the information storage part of the control apparatus 16 for each photodetector part 21b, 22b, 23b, 24b, 25b.

When the offset distance fluctuates due to the operation of the first accumulator 112, the correction value of the offset distance is based on the difference between the amount of conveyance of the first film F101 on the upstream side and the downstream side of the first accumulator 112. yield That is, the control device 16 calculates the accumulated amount of the first film F101 by the first accumulator 112 from the measurement results of the first length measuring device 14 and the second length measuring device 15, and this The correction value of the offset distance is calculated based on the accumulated amount of one film (F101).

In the defect marking device 10, when the first accumulator 112 is operating, the timing at which the recording device 13 performs marking is corrected based on the correction value of the offset distance. For example, in this embodiment, the correction value of the offset distance is calculated based on the measurement results of the first length measuring device 14 and the second measuring device 15. The control device 16 calculates an offset distance (hereinafter referred to as a second offset distance) at the time of operation of the first accumulator 112 based on the correction value and the first offset distance.

In this embodiment, the time at which the defect inspection by the first defect inspection device 11 and the second defect inspection device 12 was performed based on the measurement results of the first length measuring device 14 or the second length measuring device 15 Then, the conveyance amount of the film conveyed on the conveyance line L is calculated, and the defect marking is performed by the recording device 13 when the calculated conveyance amount coincides with the second offset distance.

In addition, in this embodiment, at the time of operation of the 1st accumulator 112, information indicating that the 1st accumulator 112 operated separately from defect marking (hereinafter referred to as accumulator operation information) is provided to the double-sided bonding film F105. may be recorded in In the case where the accumulator operation information is recorded, the deviation of the marking position or the like can be detected by the operator carefully examining the defective part of the part to which the accumulator operation information is attached. As a result, the possibility of erroneously determining a non-defective part as a defective part is reduced, and the yield is improved.

By the way, in the defect marking apparatus 10 of this embodiment, as shown in FIG. 6, for example, the 1st printing pattern adjacent to the surface of double-sided bonding film F105 in the width direction of double-sided bonding film F105 ( The first printed pattern PT1 and the second printed pattern PT2 are printed so that the defect D is positioned between the PT1 and the second printed pattern PT2.

In this embodiment, as 1st printing pattern PT1 and 2nd printing pattern PT2, a plurality of dot-shaped marks DM are printed side by side in the conveyance direction (longitudinal direction) of the double-sided bonding film F105. The mark DM has a size that can be visually recognized, and specifically has a diameter of 5 mm or less (more preferably 1 mm or more and 3 mm or less).

The control apparatus 16 is two nozzle parts 13b which print the 1st printing pattern PT1 and the 2nd printing pattern PT2 among the several nozzle parts 13b parallel to the width direction of the double-sided bonding film F105. ) is selected. Then, these two selected nozzle parts 13b have the first printing pattern PT1 and the second printing pattern ( PT2) is printed.

In this case, since the defect D is located between the first printing pattern PT1 and the second printing pattern PT2, the position of the defect D between the two can be displayed. Accordingly, the position of the defect D can be easily grasped in the visual inspection (inspection) after marking.

In addition, the size of the defect D between the first and second printing patterns PT1 and PT2 can be recognized by the distance between them. Therefore, regarding the selected two nozzle parts 13b, it is not limited to the case where the adjacent nozzle part 13b is always selected among the plurality of nozzle parts 13b aligned in the width direction of the double-sided bonding film F105. , the two nozzle parts 13b may be appropriately selected according to the position and size of the defect D.

In addition, when the defective portion is cut out from the double-sided bonding film F105 because the defect D is located between the first printed pattern PT1 and the second printed pattern PT2, the first printed pattern PT1 and It is cut between either one of the second printed patterns PT2 and the defect D.

In this case, either the first printing pattern PT1 or the second printing pattern PT2 remains on the side cut out by cutting and the side remaining after cutting. Accordingly, it is determined where the defect D is located between the side cut out by cutting and the side remaining after cutting, and the first printing pattern PT1 or the second printing pattern PT2 remaining after cutting determines the location of the defect. The location can be easily ascertained.

In addition, regarding the first printing pattern PT1 and the second printing pattern PT2, it is possible to print using erasable ink. As described above, there are cases where a defective part is accepted as a product by visual inspection (inspection) after marking. In this case, by erasing the first printed pattern PT1 and the second printed pattern PT2, this part can be used as a product, and the yield can be improved.

Regarding erasable ink, solvents appropriately selected from ketones (methyl ethyl ketone, acetone, etc.), esters (ethyl acetate, propyl = propyl acetate acetate, etc.), alcohols (ethanol, 2-propanol, etc.) , oil-based ink to which a colorant, a resin for forming a film, or the like is added can be used. Moreover, you may add a hardening|curing agent, surfactant, etc. as needed. On the other hand, as for the solvent for erasing the ink, the same solvent as the above can be used. In addition, the use of aromatic hydrocarbons such as toluene and xylene is not preferable because they affect the material of the optical film (polarizing plate).

Further, in the defect marking device 10 of the present embodiment, information on the defect D is recorded by either or both of the first printing pattern PT1 and the second printing pattern PT2.

Specifically, when printing the first printing pattern PT1 and the second printing pattern PT2, the control device 16 provides, for the selected nozzle portion 13b, information about the defect D to be recorded (defect information), either one or both of the first printing pattern PT1 and the second printing pattern PT2 (the first printing pattern PT1 and the second printing pattern PT2 in this embodiment) is changed. control to

For example, in the present embodiment, the number and spacing of marks DM constituting the first and second printing patterns PT1 and PT2 are changed according to defect information to be recorded. Accordingly, it is possible to record defect information at the same time as marking the defective portion.

The defect information is information about the defect D, such as the location, type, size, and inspection method (type of defect inspection) of the defect D. In the first printing pattern PT1 and the second printing pattern PT2, the number and spacing of marks DM are set in advance so that these defect information can be identified.

For example, in the 1st printing pattern PT1 and the 2nd printing pattern PT2 shown in FIG. 6, five marks DM are each in the conveyance direction (longitudinal direction) which is one direction of the double-sided bonding film F105. are printed side by side. Among them, two marks DM on the upstream side and three marks DM on the downstream side are divided and arranged. In addition, between the mark DM on the upstream side and the mark DM on the downstream side, a blank for one mark (the part where the gap is vacated) K is provided.

The blank K is arrange|positioned substantially in line with the defect D in the width direction (short direction) which is the other direction of double-sided bonding film F105. That is, this blank K is displaying the position of defect D in the conveyance direction (longitudinal direction) of double-sided bonding film F105. In addition, when the defect D is larger than the space K, it is preferable to arrange the space K at a position adjacent to the center of the defect D.

In this case, defects D are formed not only between the first printing pattern PT1 and the second printing pattern PT2, but also between the mark DM on the upstream side and the mark DM on the downstream side due to the space K. location can be indicated. Accordingly, the position of the defect (D) can be grasped more easily. Further, when the chip is cut out over the defect D, it is possible to determine whether or not the defect D exists in the chip by looking at the remaining marks DM. Thereby, the utilization efficiency of double-sided bonding film F105 can be improved.

Moreover, from the difference in the number of marks DM on the upstream side and the downstream side, even after being cut out from the double-sided bonding film F105, the conveyance direction (the direction shown by the arrow in FIG. 6) of the double-sided bonding film F105 is easy can figure it out

Moreover, the shift|offset|shift amount of the timing between a defect inspection position and a marking position can be grasped from the shift|offset|shift amount in the conveyance direction (longitudinal direction) of the double-sided bonding film F105 of defect D and blank K. Then, the timing of marking by the recording device 13 can be easily adjusted based on this shift amount.

Regarding the size of the space K, the distance between the marks DM on both sides of the space K is greater than the distance (distance between centers) T1 of the marks DM parallel to each other at regular intervals in the conveying direction (center of gravity). It is preferable to increase the distance between them) (T2). More specifically, it is preferably within the range of 1.2≤T2/T1≤3.0, and more preferably within the range of 1.5≤T2/T1≤2.5.

As described above, according to the present embodiment, it is possible to mark the position of the defect D and record defect information by means of the above-described first printing pattern PT1 and second printing pattern PT2.

In addition, this invention is not necessarily limited to the thing of the said embodiment, Various changes can be added in the range which does not deviate from the meaning of this invention.

For example, with respect to the first printing pattern PT1 and the second printing pattern PT2, not only the case where the above-mentioned number or spacing of the marks DM is changed, but also the size (diameter) or color (red color) other than that. , blue, black, etc. Preferably black.) and the like can be changed. That is, one or more of the number, spacing, size (diameter), and color of the dot-type marks DM may be changed. Accordingly, it is possible to record more information by setting these printing patterns PT1 and PT2 more finely.

In addition, as shown in FIG. 7, for example, the first printing pattern PT1 and the second printing pattern PT2 are not limited to the above-mentioned dot-shaped marks DM, and the double-sided bonding film F105 You may print a linear mark LM in the conveyance direction (longitudinal direction).

In this case, not only the printing head 13a of the above-mentioned inkjet system, but the some marker (printing part) parallel to the direction (width direction) which crosses the conveyance direction of the double-sided bonding film F105, for example can be used. Regarding the marker, for example, a pen marker or a laser marker is not particularly limited.

When the linear mark LM is printed and defect information is recorded, according to the defect information to be recorded, at least one or a plurality of marks LM are arranged side by side in the conveyance direction (longitudinal direction) of the double-sided bonding film F105. by arranging them in such a way that one or more of the number, spacing, size (length, thickness), and color of the linear marks (LM) are changed. Accordingly, it is possible to record defect information similarly to the case of printing the dot-shaped mark DM. In addition, when leaving blanks K in the linear mark LM, it is preferable to make the space|interval of the blank K about 3-5 mm.

Further, as shown in, for example, Figs. 8(a), 8(b), and 8(c), in the width direction (shorter direction) of the double-sided bonding film F105, the first printed pattern PT1 The third printing pattern PT3 adjacent to one or both of the first and second printing patterns PT2 may be printed.

In this case, the control device 16 is a nozzle that prints the third printing pattern PT3 separately from the two nozzle parts 13b that print the first printing pattern PT1 and the second printing pattern PT2 described above. Select part 13b. Regarding the nozzle part 13b for printing the third printing pattern PT3, at least one or a plurality of nozzle parts 13b can be selected according to the defect information to be recorded.

That is, with respect to the third printing pattern PT3, as shown in FIG. 8(a), the case of printing adjacent to either the first printing pattern PT1 or the second printing pattern PT2, or FIG. In the case of printing adjacent to both sides of the first printing pattern PT1 and the second printing pattern PT2 as shown in 8(b), as shown in FIG. 8(c), the double-sided bonding film F105 It can be appropriately selected according to the defect information to be recorded, such as when printing a plurality of lines side by side in the width direction (shorter length direction).

In addition, regarding the third printing pattern PT3, it is also possible to print between the first printing pattern PT1 and the second printing pattern PT2. In this case, it can print on the upstream side of the conveyance direction (longitudinal direction) of the double-sided bonding film F105 which sandwiched the defect D, or the downstream side, or both sides.

Also, the third printing pattern PT3 can be printed with a dot mark DM or a linear mark LM similarly to the first printing pattern PT1 and the second printing pattern PT2. The method of changing the third printing pattern PT3 is the same as the case of changing the first printing pattern PT1 and the second printing pattern PT2.

Therefore, with regard to defect information, more information can be recorded by combining the above-described first printed pattern PT1, second printed pattern PT2, and third printed pattern PT3.

Regarding the defect information recorded by any of the first, second, and third printing patterns PT1, PT2, and PT3 described above, a certain printing pattern is changed depending on, for example, the type of defect D, or the change thereof. It is only necessary to set in advance which of the number, spacing, size (diameter, length, thickness), and color of the marks (DM) (LM) constituting the printing pattern to be changed. Accordingly, the type of defect D can be identified according to a preset rule.

For example, regarding the type of defects D, for example, the foreign matter system shown in FIG. 9(a), the bubble system shown in FIG. 9(b), the luminescent point meter shown in FIG. 9(c), and FIG. ), and the like. Among these, the foreign material system shown in Fig.9 (a) is a defect (D) which arises because a foreign material mixes in double-sided bonding film F105. On the other hand, the bubble system shown in FIG.9(b) is a defect (D) by which air bubbles arise in the double-sided bonding film F105. These air bubbles may interlock with each other centering on the foreign matter when the foreign matter is mixed. On the other hand, the luminescent point meter shown in FIG. 9(c) is a defect (D) that occurred in the first film F101 used as a polarizing film, and was observed as a luminous point (light leakage) when the analyzer was arranged at orthogonal Nicols with respect to the polarizing film. defect (D). On the other hand, the defect (D) of the wrinkle system shown in Fig. 9(d) is a defect (D) caused by wrinkles in the double-sided bonding film F105.

In the present embodiment, the number of marks DM arranged on the upstream side of the marks DM on the upstream side and the marks DM on the downstream side with the space K interposed therebetween is determined according to the type of defect D. doing it differently For example, the number of marks DM arranged on the upstream side is three in the foreign matter system shown in Fig. 9 (a), one in the bubble system shown in Fig. 9 (b), and one in the bubble system shown in Fig. 9 (c). There are two in the bright point system and four in the wrinkle system shown in Fig. 9(d). Accordingly, the type of defect D can be easily identified from the number of marks DM arranged on the upstream side.

Further, in the present invention, by changing any of the first, second, and third printing patterns PT1, PT2, and PT3 described above, information on things other than the defect D can be recorded.

For example, as information about things other than defects D, manufacturing information such as manufacturing conditions, manufacturing locations, occurrence frequency of defects of the same type, and periodicity can be recorded. In addition, by combining these manufacturing information, it is possible to specify the cause, location, process, etc. of the defect D. Accordingly, it is possible to reduce the occurrence of the defect D by countermeasures such as performing maintenance of the equipment that caused the defect D.

Here, in the manufacturing process of the polarizing film mentioned above, the case where the defect D1 occurred in the process (1st process) of bonding the protective film TAC to both surfaces of the polarizer PVA is shown in FIG. 10 (a). . 10(b) shows a case in which a defect D2 occurs in a step of bonding an adhesive and a separator on one side of the protective film TAC after the first step (second step).

Then, for the defect D1 generated in the first step, the first printed pattern PT1 and the second printed pattern PT2 as shown in FIG. 11(a) are printed. On the other hand, for the defect D2 generated in the second process, the first printed pattern PT1 and the second printed pattern PT2 as shown in FIG. 11(b) are printed.

In this case, as for the positions of the defects D1 and D2 shown in Figs. 11(a) and 11(b), the first printing patterns PT1 are formed on both sides of the respective defects D1 and D2. The position can be indicated by leaving a space K between the marks DM that print the and the second printing pattern PT2 and are parallel to each other at regular intervals.

Regarding the information recorded on the defects D1 and D2, the type (defect information) of the defects D1 and D2 is determined by the first and second printing patterns PT1 and PT2. Information (manufacturing information) indicating which of the steps D1 and D2 occurred in the process and the second process is recorded.

Specifically, the types of defects D1 and D2 are distinguished by the color of the marks DM constituting the first and second printing patterns PT1 and PT2. For example, the types of defects D1 and D2 can be identified by the difference in color of the marks DM, such as transmission defects (blue), cross defects (red), and reflection defects (green).

On the other hand, in the first and second printing patterns PT1 and PT2, the first step and the second step depend on the number of marks DM on the upstream side of the blank K (the side with the smaller number of marks DM). Information on which defects (D1, D2) occurred in which process is recorded. For example, if the number of marks DM on the upstream side of the first and second printing patterns PT1 and PT2 is one, it indicates a defect D1 generated in the first process, and if there are two, it indicates a defect generated in the second process. (D2) has been shown.

In addition to the first and second printing patterns PT1 and PT2 shown in Fig. 11(b), a third printing pattern PT3 as shown in Fig. 11(c) may be printed. Regarding the third printed pattern PT3, information (defect information) indicating which layer of the stacked polarizing films has the defect D2 is recorded according to the number of marks DM. For example, since the third printed pattern PT3 shown in Fig. 11(c) is composed of three marks DM, the defect D2 exists in the third layer TAC in the stacking order. It can be identified that

As described above, in the present invention, the positions of the defects D1 and D2 are displayed and the defects D1 and D2 are displayed by printing the above-described first, second and third printed patterns PT3 on the polarizing film. information can be recorded.

Further, in the present invention, for example, as in the first printing pattern PT1 and the second printing pattern PT2 shown in FIG. 12, instead of leaving the above-mentioned blank K, the gap between the marks DM is narrowed to bond both sides. You may display the position of the defect D in the conveyance direction (longitudinal direction) of the film F105.

Furthermore, in this invention, in order to display the position of the defect D in the conveyance direction (longitudinal direction) of double-sided bonding film F105, the above-mentioned blank K is provided (the space|interval of mark DM is changed) ), it is also possible to change the size of the mark DM or mark the position of the defect D by using the third printing pattern PT3.

In the present invention, by combining any one of the above-described first, second and third printing patterns PT1, PT2 and PT3, as shown in FIGS. 13(a) to 13(g), for example, , it is possible to print various printing patterns around the defect D.

Among these, in the printing pattern shown in Fig. 13(a), the first, second and third printing patterns PT1, PT2 and PT3 are arranged so that the four marks DM surround the defect D from four sides. ) is printed. On the other hand, in the printing pattern shown in Fig. 13(b), the first, second and third printing patterns PT1, PT2 and PT3 are formed so that the four marks DM surround the defect D from three sides. This has been printed. On the other hand, in the printing pattern shown in FIG. 13(c), the first, second, and third printing patterns PT1, PT2, and PT2 are arranged so that the five marks DM surround the defect D with two adjacent sides. PT3) is printed. On the other hand, in the printing pattern shown in Fig. 13(d), the first, second and third printing patterns PT1, PT2, PT2, PT2, 6 marks DM surround the periphery of the defect D with three adjacent sides. PT3) is printed. On the other hand, in the printing pattern shown in FIG. 13(e), the first, second, and third printing patterns PT1, PT2, and PT3 are formed so that 14 marks DM surround the periphery of the defect D on four sides. This has been printed. On the other hand, in the printing pattern shown in Fig. 13(f), the first, second and third printing patterns PT1 and PT2 are formed so that the six marks DM surround the periphery of the defect D with two obliquely opposed sides. , PT3) is printed. On the other hand, in the printing pattern shown in Fig. 13(g), the first, second and third printing patterns PT1, PT2 and PT3 are formed so that eight marks DM surround the defect D from four sides. This has been printed.

Further, although the recording device 13 has a structure disposed on the downstream side of the second defect inspection device 12, it is also possible to arrange it on the downstream side of the first defect inspection device 11. In this case, it is possible to record the defect information by the recording device 13 after performing the defect inspection by the first defect inspection device 11 .

In addition, with regard to the recording device 13, it is not limited to recording defect information after the defect inspection described above. For example, in a long-distance conveyance line, there is a case where a plurality of recording devices are arranged to record distance information for each fixed distance, and the distance is corrected based on the recorded distance information. Regarding the recording device which records such distance information, it may be arranged, for example, on the upstream side of the first defect inspection device 11 or the like.

In addition, the recording device 13 is not limited to a configuration including a plurality of printing heads 13a in which a plurality of nozzle units 13b are arranged side by side, for example, using a traverse printing head. In this case, it is possible to mark the defective part regardless of the shape of the film or the conveying direction by operating the printing head.

In addition, the defect marking device 10 is not limited to constituting a part of the film manufacturing device 100, and may be a defect marking device independent of the film manufacturing device 100. Specifically, while conveying the double-sided bonding film F105 unwound from the third film roll R3, the defect inspection of the double-sided bonding film F105 is performed, and based on the defect inspection result, the double-sided bonding film F105 It is possible to set it as a configuration in which, after marking the defective part of, it is wound around the core material again.

In addition, in the film manufacturing apparatus 100, marking may be performed on the defective portion in an additional processing step without marking the defective portion. Specifically, after bonding another film on one side or both sides of the double-sided bonding film F105 while conveying the double-sided bonding film F105 unwound from the third film roll R3, the defect inspection is performed, and the above You may mark a defect part according to the defect inspection result of the film manufacturing apparatus 100.

In addition, with regard to the master to be inspected (inspected object) of the present invention, it is not necessarily limited to optical films such as the above-described polarizing film, retardation film, and luminance enhancing film, and films or paper on which a marking is applied to a defective part, etc. It may be a long strip-shaped disc of

Further, as the inspection object (inspected object) of the present invention, a sheet (chip) obtained by cutting a long strip-shaped disk may be used. That is, in the present invention, the defect inspection of the master is not limited to the case where the master is inspected for defects while the master is conveyed, and the defective portion of the master is marked based on the defect inspection result, and the sheet is inspected for defects after cutting, Based on the defect inspection result, marking may be performed on the defective portion of the sheet. Further, processing may be performed on the sheet (for example, bonding of a separate film or surface treatment of the sheet, etc.) between inspecting the sheet for defects and marking the defective portion of the sheet. Accordingly, similarly to the case where the inspected object is a disk, the defect marking method (apparatus) of the present invention can be used to mark the location of the defect and record information on the defect. Furthermore, the present invention can be widely applied to things to which the present invention can be applied other than the above-described disks and sheets.

Reference Numerals 100: Film manufacturing apparatus (original manufacturing apparatus), 101: 1st conveyance line, 102: 2nd conveyance line, 103: 3rd conveyance line, 104: 4th conveyance line, 105: 5th conveyance line, 106: winding 111a, 111b: first nip roll, 112: first accumulator, 112a, 112b: first dancer roll, 113: first guide roll, 121a, 121b: second nip roll, 122: second accumulator, 122a, 122b: 2nd dancer roll, 123a, 123b: 2nd guide roll, 131a, 131b: 3rd nip roll, 141a, 141b: 4th nip roll, 142: 3rd accumulator, 142a, 142b: 3rd dancer roll, 143a , 143b: 4th guide roll, 151a, 151b: 5th nip roll, 152: 4th accumulator, 152a, 152b: 4th dancer roll, 153a: 5th guide roll, 153b: 6th guide roll, 153c: 7th 10: defect marking device, L: transfer line, 11: first defect inspection device, 12: second defect inspection device, 13: recording device (printing device), 13a: printing head, 13b: nozzle unit (printing device) 21a, 22a, 23a, 24a, 25a: lighting unit, 21b, 22b, 23b, 24b, 25b: photodetector, P: liquid crystal display panel (optical display device), F1X: optical film, F10X: optical film, F101: first film, F102: second film, F103: third film, F104: single-sided bonding film, F105: double-sided bonding film (original), DM: dot mark, LM: linear mark, PT1: 1st imprint pattern, PT2: 2nd imprint pattern, PT3: 3rd imprint pattern, D: defect, K: blank

Claims (20)

As a defect marking method for marking a defect part of an object to be inspected,
The first printed pattern and the second printed pattern are formed on the surface of the inspected object so that a defect is located between the adjacent first printed pattern and the second printed pattern in another direction intersecting one direction in the plane of the inspected object. printing the second printing pattern;
The first printing pattern and the second printing pattern are each composed of a plurality of marks parallel to the one direction and at least partially spaced apart,
A defect marking method according to claim 1 , wherein a blank space between at least a part of the plurality of marks is arranged at a position adjacent to the defect in the other direction to indicate the position of the defect in the one direction. . The defect marking method according to claim 1, wherein information on the defect is recorded by one or both of the first and second printing patterns. The defect marking method according to claim 2, wherein a plurality of dot-shaped marks are printed side by side in the one direction as one or both of the printing patterns. The defect marking method according to claim 2 or 3, wherein a plurality of linear marks are printed side by side in one direction as one or both of the printing patterns. The defect marking method according to claim 3, wherein the information on the defect is recorded using a printing pattern in which at least one of the number, spacing, size, and color of the marks is changed. The method according to any one of claims 1 to 3, wherein in the other direction, a third printed pattern adjacent to one or both of the first printed pattern and the second printed pattern is printed to determine the defect. A defect marking method characterized by recording information. 4. The defect marking method according to any one of claims 1 to 3, characterized in that information on other than the defect is recorded by said certain printing pattern. The defect marking method according to any one of claims 1 to 3, wherein the printing pattern is printed using erasable ink. The defect marking method according to any one of claims 1 to 3, characterized in that a defective portion of a long strip-shaped disk conveyed in the one direction is marked as the inspected object. The defect marking method according to any one of claims 1 to 3, characterized in that a defective portion of a sheet obtained by cutting a long strip-shaped disk as the inspection object is marked. A step of performing a defect inspection on a long strip-shaped master conveyed in one direction;
A method for manufacturing a master, comprising a step of marking a defective portion of the master using the defect marking method according to claim 9. A step of performing a defect inspection on a sheet obtained by cutting a long strip-shaped master;
A method for manufacturing a sheet, comprising a step of marking a defective portion of the sheet using the defect marking method according to claim 10. A printing device for marking a defective part of an object to be inspected is provided;
The printing device includes a plurality of printing parts arranged side by side at predetermined intervals in another direction intersecting one direction in the surface of the inspection subject and printing a printing pattern on the surface of the inspection subject; Has a control unit for controlling the driving of the printing unit;
The control unit performs control to select a printing unit for printing the first printing pattern and the second printing pattern so that a defect is located between the adjacent first printing pattern and the second printing pattern in the different direction;
The first printing pattern and the second printing pattern are each composed of a plurality of marks parallel to the one direction and at least partially spaced apart,
The defect marking device according to claim 1 , wherein a blank space between at least a part of the plurality of marks is arranged at a position adjacent to the defect in the other direction, and indicates the position of the defect in the one direction. . 14. The method of claim 13, wherein the control unit prints one or both of the first and second printing patterns according to information on the defect to be recorded with respect to either or both of the selected printing units. A defect marking device characterized by performing control to change a pattern. A long strip-shaped disk in which marking is applied to the defective part,
It is printed on the surface by the marking, has a first printed pattern and a second printed pattern adjacent in the short length direction, and a defect is located between the first printed pattern and the second printed pattern;
The first printing pattern and the second printing pattern are each composed of a plurality of marks parallel to each other in the longitudinal direction of the master and at least partially spaced apart,
The space between at least a part of the plurality of marks is arranged at a position adjacent to the defect in the short longitudinal direction of the master, and the position of the defect in the long longitudinal direction is indicated. discus. 16. The master according to claim 15, wherein the defect-related information is recorded by one or both of the first and second printing patterns. A sheet on which a marking is applied to a defective part,
It is printed on the surface by the marking, has a first printed pattern and a second printed pattern adjacent to each other in another direction crossing one direction, and a defect is located between the first printed pattern and the second printed pattern. ,
The first printing pattern and the second printing pattern are each composed of a plurality of marks parallel to the one direction and at least partially spaced apart,
A sheet according to claim 1, wherein the blanks vacated at least part of the gaps of the plurality of marks are arranged at positions adjacent to the defects in the other directions, and the positions of the defects in the one direction are indicated. 18. The sheet according to claim 17, characterized in that information on the defect is recorded by one or both of the first printed pattern and the second printed pattern. delete delete

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