TWI626439B - Defect inspection system - Google Patents

Abstract

A defect inspection system includes: a conveying route for conveying a long strip-shaped film; a defect inspection device for performing defect inspection on the film conveyed on the conveying route; and a recording device (13) for the film conveying on the conveying route (F105) The defect information obtained from the result of the defect inspection is recorded thereon; wherein the recording device (13) is provided with a print head (13a), and the defect is printed by ejecting ink (i) in a recording area (S) along the edge of the film (F105). Information; and a mask (30) to prevent the ink (i) from adhering to the film (F105) at least on the inner area than the recording area (S).

Description

Defect inspection system

The invention relates to a defect inspection system.

This application claims priority based on Japanese Invention Patent Application No. 2013-124040 filed on June 12, 2013, and the contents are incorporated herein by reference.

For example, an optical film such as a polarizing plate is rolled up around the core material after a defect inspection such as a foreign object defect or a bump defect. The information about the position or type of the defect (hereinafter referred to as defect information) is recorded on the optical film by printing a barcode or marking the position of the defect on the end of the optical film. When the optical film rolled up in the core material reaches a certain level, it is cut off from the upstream optical film and treated as a roll for shipment. For example, Patent Document 1 discloses a defect inspection system including a defect inspection device and a recording device for recording defect information on a film on an optical film conveyance route.

[Advanced technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent Publication No. 2011-7779

However, in the above defect inspection system, when defect information is recorded on an optical film, The ink from the print head will splash around, which will cause pollution of the optical film. And this optical film contamination is one of the reasons for the decline in the yield of the optical film.

In a defect inspection system, the farther the distance between the optical film and the print head, the greater the ink splash effect. However, if the distance between the optical film and the print head is reduced, the size of the printed font will be affected, so the distance cannot be adjusted at will.

In view of this, the present invention provides a defect inspection system, the purpose of which is to prevent film contamination caused by ink splashing when defect information is recorded on the film.

In order to achieve the purpose of the present invention, the defect inspection system of the present invention adopts the following structure.

(1) A defect inspection system according to one aspect of the present invention includes: a conveying route for conveying a long strip film; a defect inspection device for performing defect inspection on the film conveyed by the conveying route; and a recording device for the conveying route The defect information obtained by the defect inspection result is recorded on the transported film; wherein the recording device includes: a print head that prints the defect information by ejecting ink in a recording area along the edge of the film; The ink is prevented from adhering to the film at least on the inner region from the recording region.

(2) In the aspect described in (1) above, the mask is provided in a space of the film opposite to the print head, and includes a first side plate portion that covers at least a side facing the inside of the film.

(3) In the aspect described in (2) above, the mask includes a second side plate portion in the space to cover a side facing an upstream side of the film in the conveying direction; and a third side plate portion to cover The side facing the downstream side of the film in the conveying direction.

(4) In the aspect described in (3) above, the mask includes a fourth side plate portion in the space and covers a side facing the outer side of the film.

(5) In the aspect described in any one of (1) to (4) above, a distance between a side of the mask opposite the film and a surface of the film is 1 mm or less.

(6) In the aspect described in any one of (1) to (5) above, the mask is freely attachable to and detachable from the print head.

(7) In the aspect described in (1) above, the mask is disposed opposite the film in a state close to the film, and the mask is provided with a window portion in a position overlooking the recording area.

(8) In the aspect described in any one of (1) to (7) above, the defect inspection system is provided with a static electricity removing device on the upstream side of the film in the conveying direction of the film, Remove static electricity from the surface of the film.

According to aspects of the present invention, a defect inspection system can be provided to prevent film contamination caused by ink splashes when the film records defect information.

10‧‧‧ Defect inspection system

11‧‧‧The first defect inspection device

12‧‧‧Second Defect Inspection Device

13‧‧‧Recording device

13a‧‧‧Print head

14‧‧‧The first length measuring device

15‧‧‧Second length measuring device

16‧‧‧Control device

21a, 22a‧‧‧Lighting Department

23a, 24a, 25a‧‧‧Lighting Department

21b, 22b ‧‧‧Light detection department

23b, 24b, 25b ‧‧‧Light detection department

30‧‧‧Mask

30a‧‧‧First side plate

30b‧‧‧Second side plate section

30c‧‧‧The third side plate

30d‧‧‧Fourth side plate

31‧‧‧Mask

32‧‧‧Mask

32a‧‧‧Window Department

40‧‧‧ static elimination device

41‧‧‧Guide Wheel

100‧‧‧ film manufacturing equipment

101‧‧‧ the first transfer route

102‧‧‧Second Transfer Route

103‧‧‧ Third Transfer Route

104‧‧‧Fourth transfer route

105‧‧‧Fifth transfer route

106‧‧‧Receiving Department

111a, 111b‧‧‧The first pressure wheel

112‧‧‧The first stocker

112a, 112b‧‧‧The first tension adjustment wheel

113‧‧‧first guide wheel

121a, 121b‧‧‧Second pressure wheel

122‧‧‧Second stocker

122a, 122b‧‧‧Second tension adjustment wheel

123a, 123b‧‧‧Second guide wheel

131a, 131b

141a, 141b ‧‧‧ Fourth pressure wheel

142‧‧‧Third Stocker

142a, 142b‧‧‧Third tension adjusting wheel

143a, 143b ‧‧‧ Fourth guide wheel

151a, 151b‧‧‧Fifth pressure wheel

151c, 151d‧ Sixth pressure wheel

152‧‧‧Fourth stocker

152a, 152b‧‧‧ Fourth tension adjusting wheel

153a‧‧‧Fifth guide wheel

153b‧‧‧Sixth guide wheel

F11‧‧‧The first optical film

F12‧‧‧Second Optical Film

F13‧‧‧The third optical film

F4‧‧‧ substrate ply

F4a‧‧‧Polarizer

F4b‧‧‧protective film

F4c‧‧‧protective film

F5‧‧‧Adhesive layer

F6‧‧‧ separator layer

F7‧‧‧Surface protective layer

F8‧‧‧ Laminated sheet

F1X‧‧‧Optical Film

F10X‧‧‧Optical Film

F101‧‧‧First film

F102‧‧‧Second film

F103‧‧‧ Third film

F104‧‧‧Single-sided laminating film

F105‧‧‧Double-sided laminating film

FX‧‧‧Optical Layer

G‧‧‧Frame section

i‧‧‧ ink

K‧‧‧ space

L‧‧‧ transport route

P‧‧‧LCD panel

P1‧‧‧First substrate

P2‧‧‧Second substrate

P3‧‧‧LCD layer

P4‧‧‧display area

R1‧‧‧The first roll

R2‧‧‧Second Roller

R3‧‧‧The third roll

S‧‧‧Recording area

T‧‧‧ interval

FIG. 1 is a plan view of an embodiment of a liquid crystal display panel.

FIG. 2 is a cross-sectional view of the liquid crystal display panel shown in FIG. 1. FIG.

Fig. 3 is a cross-sectional view of an embodiment of an optical film.

Fig. 4 is a side view showing the structures of a thin film manufacturing apparatus and a defect inspection system.

Fig. 5A is a plan view of an embodiment of the mask viewed from the upper side of the film.

Figure 5B is a side view of an embodiment of the mask viewed from the upstream side of the film.

Figure 5C is a side view of an embodiment of the mask viewed from the outside of the film.

Fig. 6 is a plan view of a modification of the mask.

FIG. 7A is a perspective view of a modification of the mask.

Fig. 7B is a side view of a modification of the mask.

Fig. 8A is a plan view of another embodiment of the mask.

Fig. 8B is a side view of another embodiment of the mask.

The following is a detailed description of embodiments of the present invention with reference to the drawings.

In this embodiment, a thin film manufacturing apparatus constituting a part of a production system for an optical display element will be described.

The thin film manufacturing device manufactures a polarizing film, a retardation film, or a brightness-increasing film, such as a liquid crystal display panel or an organic electro-luminescence (OEL) display panel, which is an optical display panel (optical display panel). Such as thin-film optical components (optical films). The thin film manufacturing apparatus is a part of a production system including an optical display element such as an optical display component or an optical module of this type.

In this embodiment, a series of transmissive liquid crystal display devices as an optical display element are cited. A transmissive liquid crystal display device includes a liquid crystal display panel and a backlight. In this liquid crystal display device, the illumination light emitted from the backlight is incident from the back side of the liquid crystal display panel, and then the light modulated by the liquid crystal display panel is emitted from the surface side of the liquid crystal display panel, thereby displaying an image.

(Optical display element)

First, the structure of a liquid crystal display panel P as an optical display element shown in FIGS. 1 and 2 will be described. FIG. 1 is a plan view of the structure of the liquid crystal display panel P. FIG. 2 is a cross-sectional view of the liquid crystal display panel P in the direction of the cutting line A-A shown in FIG. 1. It should be noted that the hatching of the cross section in FIG. 2 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 opposite to the first substrate P1, and a liquid crystal layer disposed between the first substrate P1 and the second substrate P2. P3.

The first substrate P1 is composed of a transparent substrate having a rectangular shape in a plan view. Second substrate P2 is composed of a rectangular transparent substrate 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 on the inner side of the rectangular area in plan view surrounded by the frame of the sealing material. In the liquid crystal display panel P, a region accommodated inside the periphery of the liquid crystal layer P3 as a display region P4 in a plan view, and a frame surrounding a region outside the display region P4 as a frame edge portion G.

The back side (backlight side) of the liquid crystal display panel P is bonded with the first polarizing film. Optical film F11. On the front side (display surface 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 increasing film superposed on the second optical film F12 are bonded. Hereinafter, the first optical film F11, the second optical film F12, and the third optical film F13 are collectively referred to as an optical film F1X.

(Optical film)

Next, an embodiment of the optical layer sheet FX constituting the optical film F1X shown in FIG. 3 will be described. Fig. 3 is a sectional view showing the structure of the optical layer sheet FX. It should be noted that the hatching of the cross section in FIG. 3 is omitted.

The optical film F1X is cut from the long strip-shaped optical layer FX shown in FIG. 3 A slice of a specified length. Specifically, this optical layer sheet FX is provided with a base material sheet F4, an adhesive layer F5 provided on one side (upper side in FIG. 3) of the base material sheet F4, and a transparent adhesive layer F5 provided on the base material sheet F4. The separation layer sheet F6 on one side and the surface protection layer sheet F7 provided on the other side (lower side in FIG. 3) of the base material layer sheet F4.

When the base material layer F4 is a polarizing film, it has a pair of protective films F4b and F4c. Structure for holding polarizer F4a. The adhesive layer F5 is a layer for attaching the substrate layer sheet F4 to the liquid crystal display panel P. The separation layer sheet F6 is used to protect the adhesive layer F5. The separation layer sheet F6 is peeled from the adhesive layer F5 when the optical layer sheet FX is cut out of the layer sheet (optical film F1X). Hereinafter, a portion (a portion that becomes the optical film F1X) after the separation layer sheet F6 is removed from the optical film F1X is referred to as a bonding layer sheet F8. The surface protection layer sheet F7 is used to protect the surface of the base material layer sheet F4. Surface protective layer F7 is sticky when substrate layer F4 After sticking to the liquid crystal display panel P, it peeled from the surface of the base material layer sheet F4.

In addition, the base layer sheet F4 may be omitted from either of the pair of protective films F4b and F4c. The structure. For example, if the protective film F4b on the side of the adhesive layer F5 is omitted, the adhesive layer F5 can be directly disposed on the polarizing layer sheet F4a. In addition, the protective film F4c on the surface protective layer sheet F7 side may be subjected to a surface treatment such as a hardening treatment for protecting the outermost surface of the liquid crystal display panel P or an anti-glare treatment having an anti-glare effect. In addition, the base material layer sheet F4 is not limited to the above-mentioned stacked structure, and may be a single-layer structure. The surface protective layer sheet F7 may be omitted.

(Film production equipment)

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

As shown in FIG. 4, for example, the thin film manufacturing apparatus 100 is for forming polarized light. One side of the long strip-shaped first film F101 of the film is bonded to form a long strip-shaped second film F102 of a surface protection film, and then the other side of the first film F101 is bonded to form a long strip-shaped surface-protective film. Three films F103, thereby manufacturing an optical film F10X in which the second film F102 and the third film F103 are bonded to both sides of the first film F101.

Specifically, the thin film manufacturing apparatus 100 includes a first conveying path 101 and a second The transport route 102, the third transport route 103, the fourth transport route 104, the fifth transport route 105, and the winding unit 106.

The first conveyance path 101 forms a conveyance path for conveying the first film F101. second The conveyance route 102 forms a conveyance route for conveying the second film F102 unrolled from the first roll roll R1. The third conveyance path 103 forms a conveyance path for conveying the single-sided laminated film F104 to which the second film F102 is adhered on one side of the first film F101. The fourth conveyance path 104 forms a conveyance path for conveying the third film F103 rolled out from the second roll roll R2. The fifth conveyance path 105 is formed on one side of the first film F101 side (the other side of the first film F101) to be conveyed on the single-sided bonding film F104, and a third thin film is bonded. The transport path of the double-sided laminated film F105 (optical film F10X) of the film F103. The manufactured optical film F10X is wound up in the winding section 106 and is wound up as the core material of the third roll R3.

The first transport route 101 will be based on polyvinyl alcohol (PVA, polyvinyl alcohol), etc. The polarizing film is used as a base film. After applying a dyeing treatment, a cross-linking treatment, or a stretching treatment, a protective film such as triacetylcellulose (TAC) is laminated on both sides of the film. A film F101 is transported to the route of the third transport route 103.

Specifically, the first conveying path 101 is a part of the third conveying path 103 On the upstream side, a pair of first pressure wheels 111a, 111b, a first stocker 112 including a plurality of first tension adjustment wheels 112a, 112b, and a first轮 轮 113。 The guide wheel 113.

A pair of first pressing wheels 111a, 111b are for holding the first film F101 in the middle and mutually Reverse rotation, thereby pulling out the roller of the first film F101 in the direction of the arrow (to the right) shown in FIG. 4.

The first stocker 112 is used to absorb the variation in the supply amount of the first film F101 At the same time, a device for reducing the fluctuation of the tension applied to the first film F101 is also provided. Specifically, the first stocker 112 is arranged in parallel between the first pressure wheels 111a, 111b and the first guide wheel 113, and a plurality of first tension adjusting wheels 112a on the upper side and a plurality of first tensions on the lower side are arranged side by side. Adjusting wheel 112b.

In the first stocker 112, the upper first tension adjusting wheel 112a and the lower first A tension adjustment wheel 112b is arranged in a staggered state, and while the first film F101 is being conveyed, the first tension adjustment wheel 112a on the upper side and the first tension adjustment wheel 112b on the lower side are moved upwards and downwards relatively. . In this way, the first film F101 can be stored without stopping the first conveyance path 101. For example, in the first stocker 112, as the distance between the first tension adjusting wheel 112a on the upper side and the first tension adjusting wheel 112b on the lower side is increased, the hoarding amount of the first film F101 can be increased. On the other hand, in the first stocker 112, the distance between the first tension adjusting wheel 112a on the upper side and the first tension adjusting wheel 112b on the lower side can be shortened to reduce the amount of hoarding of the first film F101. For example, the first stocker 112 is When the core material of the reel drums (the first reel drum R1 to the third reel drum R3) is exchanged, and the film is connected, the operation is performed.

The first guide wheel 113 is rotated while pulling out the first pressure wheels 111a, 111b. The first film F101 is guided to a roller on the upstream side of the third conveyance path 103. Furthermore, the first guide wheel 113 is not limited to a single arrangement structure, and may be a plurality of arrangement structures.

The second conveying route 102 is a process such as polyethylene terephthalate (PET, A long strip-shaped second film F102, such as a polyethylene terephthalate, which forms a surface protection film, is pulled out from the first roll roll R1 and transported to a route of the third transport route 103.

Specifically, the second transport route 102 is a portion of the third transport route 103 On the other side of the upstream side, a pair of second pressure rollers 121a, 121b, a second stocker 122 including a plurality of second tension adjustment wheels 122a, 122b, and a pair of second pressure rollers 121a, 121b are arranged side by side in a horizontal direction toward the third conveying path 103, and The plurality of second guide wheels 123a, 123b.

A pair of second pressing wheels 121a, 121b are for holding the second film F102 in the middle and mutually Reverse rotation, thereby pulling out the roller of the second film F102 in the direction of the arrow (to the left) shown in FIG. 4.

The second stocker 122 is used to absorb the variation in the supply amount of the second film F102. At the same time, a device for reducing the fluctuation of the tension applied to the second film F102 is also provided. Specifically, the second stocker 122 is arranged alternately between the second pressing wheels 121a, 121b and the second guide wheel 123a, and a plurality of second tension adjusting wheels 122a on the upper side and a plurality of second on the lower side are arranged side by side. The tension adjustment wheel 122b.

In the second stocker 122, the second tension adjusting wheel 122a on the upper side and the second tension adjusting wheel 122a on the lower side When the two tension adjustment wheels 122b are hung in a staggered state, while the second film F102 is being transported, the upper second tension adjustment wheel 122a and the lower second tension adjustment wheel 122b are moved upward and downward relative to each other. . In this way, the second film F102 can be stored without stopping the second conveyance route 102. For example, in the second stocker 122, the distance between the upper second tension adjustment wheel 122a and the lower second tension adjustment wheel 122b can be increased to increase the hoarding amount of the second film F102. On the other hand, the second In the stocker 122, the distance between the upper second tension adjustment wheel 122a and the lower second tension adjustment wheel 122b can be shortened to reduce the amount of the second film F102 stored. For example, the second stocker 122 is operated when the core material of the reel drums (the first reel drum R1 to the third reel drum R3) is exchanged and the film is connected.

The plurality of second guide wheels 123a, 123b are rotated at the same time, and the second pressure wheels 121a, The second film F102 pulled out by 121b is guided to a roller on the upstream side of the third conveyance path 103. Furthermore, the second guide wheels 123a, 123b are not limited to a plurality of configuration structures, and may be a single configuration structure.

The third conveying route 103 is a process in which a second thin film is bonded to one side of the first thin film F101. The long-strip single-sided bonding film F104 of the film F102 is transported to the route of the fifth transport route 105.

Specifically, the third conveyance route 103 is provided with a pair of third pressure rollers 131a, 131b. The pair of third pressure rollers 131 a and 131 b are located at the intersection of the downstream side of the first transport path 101 and the downstream side of the second transport path 102. A pair of third pressing wheels 131a and 131b are sandwiched between the first film F101 and the second film F102 while rotating in the opposite directions to each other, thereby bonding the first film F101 and the second film F102. The pair of third pressing wheels 131a and 131b pull the single-sided bonding film F104 to which the first film F101 and the second film F102 are bonded in the direction of the arrow (downward) in FIG. 4.

The fourth transport route 104 is a shape such as PET (polyethylene terephthalate) The strip-shaped third film F103 forming a surface protection film is pulled out from the second roll drum R2 and is transported to the route of the fifth transport route 105.

Specifically, the fourth conveyance route 104 is a part of the third conveyance route 103. A pair of fourth pressure wheels 141a, 141b, a third stocker 142 including a plurality of third tension adjustment wheels 142a, 142b, and a plurality of the plurality Fourth guide wheels 143a, 143b.

A pair of fourth pressure rollers 141a, 141b is for holding the third film F103 in the middle and mutually Reverse rotation, thereby pulling out the roller of the third film F103 in the direction of the arrow (to the right) shown in FIG. 4.

The third stocker 142 is used to absorb the difference in the supply amount of the third film F103. At the same time, a device for reducing the fluctuation of the tension applied to the third film F103. Specifically, the third stocker 142 is alternately arranged between the fourth pressure wheels 141a, 141b and the fourth guide wheel 143a, and a plurality of third tension adjusting wheels 142a on the upper side and a plurality of third on the lower side are arranged in parallel. Tension adjustment wheel 142b.

In the third stocker 142, the upper third tension adjusting wheel 142a and the lower third The three tension adjustment wheels 142b are arranged in a staggered state, and while the third film F103 is being conveyed, the upper third tension adjustment wheel 142a and the lower third tension adjustment wheel 142b are moved upward and downward relative to each other. . In this way, the third film F103 can be stored without stopping the fourth conveyance route 104. For example, in the third stocker 142, the distance between the third tension adjustment wheel 142a on the upper side and the third tension adjustment wheel 142b on the lower side can be increased to increase the amount of storage of the third film F103. On the other hand, in the third stocker 142, the distance between the third tension adjusting wheel 142a on the upper side and the third tension adjusting wheel 142b on the lower side can be shortened, thereby reducing the accumulation amount of the third film F103. For example, the third stocker 142 is operated when the core material of the reel drums (the first reel drum R1 to the third reel drum R3) is exchanged, and the film is connected.

The plurality of fourth guide wheels 143a and 143b rotate the fourth pressure wheels 141a while rotating respectively. The third film F103 pulled out by 141b is guided to a roller on the downstream side of the third transport path 103 (upstream of the fifth transport path 105). Furthermore, the fourth guide wheels 143a, 143b are not limited to a plurality of arrangement structures, and may be a single arrangement structure.

The fifth conveyance route 105 is the first film F101 that is bonded to the film F104 on one side. The long strip-shaped double-sided laminating film F105 (optical film F10X) on which one side (the other side of the first film F101) is bonded to the third film F103 (the optical film F10X) is transported to the third roll R3.

Specifically, the fifth transport path 105 is a part of the third transport path 103 On the other side of the downstream side, a pair of fifth pressure rollers 151a, 151b, a fifth guide roller 153a, a pair of sixth pressure rollers 151c, 151d are arranged side by side in a horizontal direction toward the third roll drum R3 in a horizontal direction. Fourth tension tone The fourth stocker 152 and the sixth guide wheel 153b of the pitch wheels 152a, 152b.

A pair of fifth pressure rollers 151a, 151b are located on the downstream side of the third conveying path 103 and The meeting point on the upstream side of the fifth transport route 105. The pair of fifth pressing wheels 151a and 151b are sandwiched between the single-sided bonding film F104 and the third film F103 while rotating in the opposite directions to each other, thereby bonding the single-sided bonding film F104 and the third film F103. The pair of fifth pressing wheels 151a and 151b pull out the double-sided bonding film F105 to which the single-sided bonding film F104 and the third film F103 are bonded in the arrow direction (downward) shown in FIG. 4.

The fifth guide wheel 153a is rotated while pulling out the fifth pressure wheels 151a, 151b. The double-sided bonding film F105 is guided to a roller of the fourth stocker 152. In addition, the fifth guide wheel 153a is not limited to a single arrangement structure, and may be a plural arrangement structure.

A pair of sixth pressure wheels 151c and 151d are used to sandwich the double-sided laminating film F105 in the middle. At the same time, they rotate in opposite directions to each other, thereby pulling out the roller of the double-sided laminating film F105 in the direction of the arrow shown in Fig. 4 (to the right).

In the fourth stocker 152, the fourth tension adjusting wheel 152a on the upper side and the fourth tension adjusting wheel 152a on the lower side When the four tension adjustment wheels 152b are hung in a staggered state, while the double-sided laminating film F105 is being transported, the upper fourth tension adjustment wheel 152a and the lower fourth tension adjustment wheel 152b are relatively upward and downward. Lifting action. Thus, the double-sided bonding film F105 can be stored without stopping the fifth conveyance path 105. For example, in the fourth stocker 152, as the distance between the upper fourth tension adjustment wheel 152a and the lower fourth tension adjustment wheel 152b is increased, the amount of double-sided laminated film F105 can be increased. On the other hand, in the fourth stocker 152, the distance between the upper-side fourth tension adjusting wheel 152a and the lower-side fourth tension adjusting wheel 152b can be shortened to reduce the amount of double-sided laminated film F105. For example, the fourth stocker 152 is operated when the core material of the reel drums (the first reel drum R1 to the third reel drum R3) is exchanged, and the film is connected.

The sixth guide wheel 153b is used to guide the double-sided laminating film F105 to the third roll. Wheel of R3. In addition, the sixth guide wheel 153b is not limited to a single arrangement structure, and may be a plural arrangement structure.

The double-sided bonding film F105 is rolled in the winding section 106, and is rolled up as the optical film F10X. After the core material of the third roll drum R3 is conveyed to the next project.

(Defect inspection system)

Next, a defect inspection system 10 including the thin film manufacturing apparatus 100 will be described.

As shown in FIG. 4, the defect inspection system 10 is controlled by the transport route L, the first defect inspection device 11 and the second defect inspection device 12, the recording device 13, the first length measuring device 14 and the second length measuring device 15, and the control The device 16 is composed.

The conveying route L forms a conveying route for conveying a film to be inspected. In the embodiment, the transport path L is composed of the first transport path 101, the third transport path 103, and the fifth transport path 105.

The first defect inspection device 11 is based on the first film F101 and has not been bonded to the second film Defect inspection device before F102 and third film F103. Specifically, the first defect inspection device 11 is used to inspect various defects such as foreign object defects, uneven defects, and bright spot defects generated when the first film F101 is manufactured or transported. The first defect inspection device 11 performs, for example, inspection processing such as reflection inspection, transmission inspection, oblique inspection, and orthogonal polarization transmission inspection on the first film F101 transported on the first transportation route 101, thereby detecting the first Defects of the thin film F101.

The first defect inspection device 11 is located on the first conveying path 101, 111b is further upstream, and includes a plurality of illumination sections 21a, 22a, and 23a to irradiate illumination light to the first film F101; and a plurality of light detection sections 21b, 22b, and 23b to inspect light (transmitted light) transmitted through the first film F101. Or light reflected by the first film F101 (reflected light).

Since this embodiment is a structure for inspecting transmitted light, it is juxtaposed on the first film F101. The plural illumination sections 21a, 22a, 23a and the light detection sections 21b, 22b, 23b in the conveying direction of A thin film F101 is arranged oppositely. In addition, the first defect inspection device 11 is not limited to a structure for inspecting transmitted light, and may be a structure for inspecting reflected light or a structure for inspecting transmitted light and reflected light.

The lighting sections 21a, 22a, 23a will adjust the light intensity, wavelength or Illumination light such as a polarized light state is irradiated on the first film F101. The light detecting sections 21b, 22b, and 23b use an imaging element such as a CCD (charge-coupled device) to take an image of the position where the illumination light of the first film F101 is irradiated. The images (defect inspection results) captured by the light detection sections 21 b, 22 b, and 23 b are output to the control device 16.

The second defect inspection device 12 is for bonding the second film F102 and the third film. The first film F101 after F103 is a device for inspecting defects on the double-sided laminated film F105. Specifically, the second defect inspection device 12 inspects foreign materials generated when the first film F101 is bonded to the second film F102 and the third film F103 or when the single-sided bonded film F104 and the double-sided bonded film F105 are transported. Various defects such as defects, bump defects, and bright spot defects. The second defect inspection device 12 performs inspection processing such as reflection inspection, transmission inspection, oblique inspection, and orthogonal polarization transmission inspection on the double-sided bonding film F105 conveyed by the fifth conveyance path 105, thereby detecting the double-sided adhesive film. Defective film F105.

The second defect inspection device 12 is located on the fifth transport path 105, which is 151c and 151d are further upstream and are provided with a plurality of illuminating sections 24a and 25a to irradiate the illumination light to the double-sided adhesive film F105; and a plurality of light detecting sections 24b and 25b to inspect the light (transmission Light) or light reflected from the double-sided bonding film F105 (reflected light).

Since this embodiment is a structure for inspecting transmitted light, it is juxtaposed on the double-sided laminated film. The plurality of illumination sections 24a, 25a and the light detection sections 24b, 25b in the conveying direction of F105 are arranged facing each other while sandwiching the double-sided bonding film F105. In addition, the second defect inspection device 12 is not limited to a structure for inspecting transmitted light, and may be a structure for inspecting reflected light or a structure for inspecting transmitted light and reflected light.

Illumination section 24a, 25a will adjust light intensity, wavelength or polarized light according to defect inspection type Illumination light such as a state is irradiated on the double-sided bonding film F105. The light detecting sections 24b and 25b are images of the positions irradiated with the illumination light of the double-sided bonding film F105 by using an imaging element such as a CCD. The images (defect inspection results) captured by the light detection units 24 b and 25 b are output to the control device 16.

The recording device 13 is a combination of the first defect inspection device 11 and the second defect inspection device The defect information obtained in the inspection result of 12 is recorded in the device of double-sided laminating film F105. Specifically, the defect information includes related information such as the location or type of the defect. For example, the defect information is recorded as an identification code such as a primary code, a secondary code, and a QR code (registered trademark). The identification code includes, for example, the defects inspected by the first defect inspection device 11 and the second defect inspection device 12, which indicate how far apart the identification code exists from the printing position along the width of the film. Information (information about the location of the defect). In addition, the identification code can also contain information about the type of defect detected.

The recording device 13 is installed on the fifth conveyance route 105 in comparison with the second defect inspection. The device 12 is further downstream. The recording device 13 includes, for example, a print head 13a using an inkjet method. The print head 13a ejects ink along the position (recording area) of the edge portion in the width direction of the double-sided bonding film F105 to print the defect information.

In addition, the recording device 13 may be transparent at the defect position of the double-sided bonding film F105. Overprinting (marking) includes dot-like, line-like, or frame-like marks of the size of the defect, and records directly at the defect location. At this time, in addition to the mark, a mark or pattern indicating the type of the defect may be printed at the defect position, thereby recording information about the type of the defect.

The first length measuring device 14 and the second length measuring device 15 measure the conveyance of the first film F101. 量 的 装置。 Measuring device. Specifically, in this embodiment, in the first conveying path 101, a rotary encoder constituting the first length measuring device 14 is arranged on the first pressing wheel 111a located upstream of the first stocker 112. The third pressure roller 131 a located further downstream than the first stocker 112 is provided with a rotary encoder constituting the second length measuring device 15.

The first length measuring device 14 and the second length measuring device 15 cooperate to contact the first film F101 and rotate. The rotation displacements of the first pressure wheel 111a and the third pressure wheel 131a, and the conveyance amount of the first film F101 are measured by a rotary encoder. The measurement results of the first length measuring device 14 and the second length measuring device 15 are output to the control device 16.

Furthermore, in this embodiment, the first defect inspection device 11 and the recording device 13 Since there is only one stocker, a length measuring device is arranged on each of the upstream side and the downstream side of the stocker. On the other hand, if there are a plurality of stockers between the first defect inspection device 11 and the recording device 13, the upstream side of the stocker located on the most upstream side and the downstream side of the stocker located on the most downstream side may Each is equipped with a length measuring device.

The control device 16 is a device for overall control of each part of the thin film manufacturing apparatus 100. With Specifically, the control device 16 is provided with a computer system as an electronic control device. The computer system includes an arithmetic processing unit such as a central processing unit (CPU) and an information storage unit such as a memory (or hard disk).

The information memory section of the control device 16 is an operating system in which the control computer system is recorded (OS, operating system) or each processing program of each part of the thin film manufacturing apparatus 100 in the calculation processing section. In addition, the control device 16 may include a logic circuit such as an application specific integrated circuit (ASIC) that needs to perform various processes when controlling each part of the thin film manufacturing device 100. In addition, the control device 16 includes an interface for performing input / output with an external device of the computer system. This interface can be connected with input devices such as keyboards or mice, display devices such as liquid crystal displays, and communication devices.

The control device 16 analyzes the light detection sections 21b, 22b, 23b and the light detection sections 24b, 25b. The captured image, and identify the presence (location) or type of defects. If the control device 16 determines that the first film F101 or the double-sided bonding film F105 has a defect, the control device 16 controls the recording device 13 to record the defect information on the double-sided bonding film F105.

In defect inspection system 10, in order to avoid the defect inspection position of double-sided laminating film F105 There is a deviation between the position and the information recording position of the defect information, and the defect information is recorded at a specified time point after the defect inspection. For example, in this embodiment, when the first defect inspection device 11 or the second defect inspection device 12 finishes the defect inspection, the film conveyance amount on the conveyance route L is calculated, and the calculated conveyance amount and the When the offset distances match, recording is performed through the recording device 13.

Here, the offset distance refers to the first defect inspection device 11 and the second defect inspection device Film transport distance between 12 and recording device 13. Strictly speaking, the offset distance is defined as the film transfer from the defect inspection position (defect inspection position) performed by the first defect inspection device 11 and the second defect inspection device 12 to the position where the defect information (information recording position) is recorded by the recording device 13 distance. The offset distance varies when the first stocker 112 is activated.

The offset distance when the first stocker 112 is not activated (hereinafter referred to as the first offset distance), It is stored in the information storage section of the control device 16 in advance. Specifically, the first defect inspection device 11 and the second defect inspection device 12 include a plurality of light detection sections 21b, 22b, 23b and 24b, 25b, and the light detection sections 21b, 22b, 23b, 24b, 25b is inspected separately. Therefore, in the information storage section of the control device 16, the light detection sections 21b, 22b, 23b, 24b, and 25b each memorize the first offset distance.

When the offset distance is changed due to the operation of the first stocker 112, The offset value of the offset amount of the first film F101 between the upstream side and the downstream side of the stocker 112 is calculated. That is, the control device 16 can calculate the hoarding amount of the first film F101 of the first stocker 112 according to the measurement results of the first length measuring device 14 and the second length measuring device 15, and then based on the first film F101 The amount of storage is calculated as the offset value.

In the defect inspection system 10, when the first stocker 112 is actuated, the time at which the defect information is recorded by the correction recording device 13 is based on the correction value of the offset distance. For example, in this embodiment, a correction value of the offset distance is calculated based on the measurement results of the first length measuring device 14 and the second length measuring device 15. The control device 16 calculates an offset distance (hereinafter referred to as a second offset distance) when the first stocker 112 operates according to the correction value and the first offset distance.

This embodiment is based on the measurement result of the first length measuring device 14 or the second length measuring device 15, After the first defect inspection device 11 and the second defect inspection device 12 perform a defect inspection, the film conveyance amount of the conveyance route L is calculated, and when the calculated conveyance amount is consistent with the second offset distance, it is recorded through the record The device 13 performs recording.

In addition, in this embodiment, when the first stocker 112 is operated, In addition, information on the operation of the first stocker 112 (hereinafter referred to as stocker operation information) can also be recorded on the double-sided laminating film F105. When recording the operation information of the stocker, the defective part with the information information of the stocker operation can be checked by the operator in detail to check the deviation of the recording position. Thereby, the probability of erroneously judging a good part as a defective part can be reduced, and the yield can be improved.

In addition, as shown in FIGS. 5A to 5C, the recording device 13 in this embodiment, A cover 30 is provided to prevent the ink i from adhering to the double-sided bonding film F105 at least inwardly of the recording area S. FIG. 5A is a plan view of the mask 30 viewed from the upper side of the double-sided bonding film F105. FIG. 5B is a side view of the mask 30 viewed from the upstream side in the conveying direction of the double-sided bonding film F105. FIG. 5C is a side view of the mask 30 viewed from the outside of the double-sided bonding film F105.

Specifically, the mask 30 faces the print head 13a on the double-sided bonding film F105. The space K includes a first side plate portion 30a covering the side facing the inside of the double-sided bonding film F105, and a second side plate portion 30b covering the upstream side facing the conveying direction of the double-sided bonding film F105. One side and the third side plate portion 30c cover one side of the downstream side facing the conveyance direction of the double-sided bonding film F105.

The mask 30 is detachably attached to the print head 13a by means of screws or the like. Assume. The mask 30 is open in the space K, and its side facing the outer side of the double-sided bonding film F105 is opened, so it can be easily removed and attached to the print head 13a.

The side of the mask 30 opposite to the double-sided bonding film F105 and the double-sided bonding film F105 The interval T between the surfaces may be 1 mm or less. If the interval T is set to 1 mm or less, when the ink i ejected from the print head 13a splashes around, the splash of the ink i can be prevented from splashing outside the mask 30. side. Moreover, the numerical value is only an example, and is not limited thereto.

Moreover, the splash of ink i refers to the ink i ejected from the print head 13a, such as self-funded At the recording position, the ink i splashes onto the surrounding area, or the ink i splashes to the surrounding area after attaching to the double-sided laminating film F105.

The recording area S is located on the double-sided bonding film F105 and is bonded to the liquid crystal display panel P. In this case, the display area P4 superimposed on the liquid crystal display panel P is further outside. In addition, the recording area S is an area cut off before being attached to the liquid crystal display panel P or after being attached to the liquid crystal display panel P.

The three side plate portions (first side plate portion 30a, second side plate portion 30b, In the third side plate portion 30c), the first side plate portion 30a is a portion that prevents splashes of the ink i from adhering to the display area P4 of the double-sided laminated film F105. On the other hand, the second side plate portion 30b prevents the splash of ink i from adhering to the upstream side in the conveying direction of the double-sided bonding film F105. On the other hand, the third side plate portion 30c prevents the splash of ink i from adhering to the downstream side in the conveying direction of the double-sided bonding film F105.

The splash of ink i is adhered to the inner surface of the mask 30. Therefore, the mask 30 can be fixed It is removed from the print head 13a at a later date, and after being washed, the print head 13a is replaced and reused.

In addition, the thin film manufacturing apparatus 100 may include a static elimination device 40 to remove double-sided stickers. The static electricity on the surface of the film F105 is combined. The static electricity removing device 40 is called a negative ion generator, and is disposed on the upstream side of the recording device 13 (print head 13a) in the conveying direction of the double-sided bonding film F105. Next, the static electricity removing device 40 blows out a negative ionizing gas across the width direction of the double-sided bonding film F105 to remove static electricity generated on the surface of the double-sided bonding film F105.

In this way, the thin film manufacturing apparatus 100 can prevent the splash of ink i from approaching due to static electricity. The surface of the film F105 is laminated on both sides. Therefore, the film manufacturing apparatus 100 can further prevent the spatter of the ink i from adhering to the surface of the double-sided bonding film F105 through the combination of the mask 30 and the static elimination device 40.

As described above, the defect inspection system 10 in this embodiment prevents Sink information recorded on the double-sided laminated film F105 caused by ink i splashing dye.

In addition, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit and scope of the present invention.

Specifically, at least one of the three side plate portions (the first side plate portion 30a, the second side plate portion 30b, and the third side plate portion 30c) of the cover 30 must be provided with the first side plate portion 30a. In this way, the splash of the ink i can be prevented from adhering to the portion of the display area P4 of the double-sided laminated film F105.

In addition, as shown in FIG. 6, in addition to the three side plate portions (the first side plate portion 30a, the second side plate portion 30b, and the third side plate portion 30c), the mask 30 may be provided with a fourth side plate portion 30d. The cover faces the outer side of the double-sided bonding film F105.

In addition, as shown in FIGS. 7A and 7B, the recording device 13 and the print head 13 a may be disposed with respect to the guide wheel 41. At this time, the shape of the lower end of the mask 31 attached to the print head 13 a is provided along the outer shape of the guide wheel 41. In this way, the interval T between the surface and the surface of the double-sided bonding film F105 can be 1 mm or less.

In addition, in another embodiment of the present invention, for example, a mask 32 as shown in FIGS. 8A and 8B may be used. The mask 32 is composed of a parallel flat plate material, and is arranged relative to the double-sided bonding film F105 in a state close to the double-sided bonding film F105. In addition, a window portion 32a (opening portion) is provided at a position of the recording area S of the mask 32 in a plan view. In this structure, since the mask 32 is covered in the area other than the recording area S, it is possible to prevent contamination of the double-sided bonding film F105 caused by ink i splashing when the double-sided bonding film F105 records defect information. The cover 32 may be provided with the side plate portion (the first side plate portion 30a, the second side plate portion 30b, the third side plate portion 30c, and the fourth side plate portion 30d). That is, the cover 32 may have a bottom plate structure that covers the bottom surface of the cover 30.

Although the recording device 13 is disposed on the downstream side of the second defect inspection device 12, it may be disposed on the downstream side of the first defect inspection device 11. At this time, after the first defect inspection device 11 performs the defect inspection, the defect information can be recorded through the recording device 13.

In addition, the recording device 13 is not limited to record defect information after the defect inspection. For example, in the long-distance transportation route, a plurality of recording devices may be arranged, and the distance information is recorded at a certain distance, and the distance is corrected according to the recorded distance information. The recording device that records this distance information is, for example, disposed on the upstream side of the first defect inspection device 11 or the like. In an embodiment of the present invention, the recording device for recording the distance information is also provided on the printing head of the recording device with the same mask as the masks 30, 31, 32 to prevent ink splashing during recording. Film contamination.

Furthermore, the film to which the embodiment of the present invention is applied is not limited to the optical film such as a polarizing film, a retardation film, or a brightness increasing film. If the film can be recorded through the recording device 13, the embodiment of the present invention can be widely used. .

Claims (8)

A defect inspection system includes: a conveying route for conveying a long strip-shaped film; a defect inspection device for performing defect inspection on a film conveyed by the conveying route; and a recording device for the conveying route Defect information obtained from the defect inspection result is recorded on the transported film; wherein, the recording device is provided with a printing head that prints the defect information by ejecting an ink in a recording area along the edge of the film And a mask to prevent the ink from adhering to the film at least on the inner region than the recording area, and the interval between the side of the mask opposite the film and the surface of the film is 1 mm or less. The defect inspection system according to item 1 of the patent application scope, wherein the mask is provided in a space opposite to the print head of the film, and has a first side plate portion covering at least a side facing the inside of the film . The defect inspection system according to item 2 of the scope of patent application, wherein the mask includes a second side plate portion in the space, covering the side facing the upstream side of the film in the transport direction; and a third side plate portion , Covering the side facing the downstream side in the transport direction of the film. The defect inspection system according to item 3 of the scope of patent application, wherein the mask is provided with a fourth side plate portion in the space to cover a side facing the outer side of the film. The defect inspection system according to any one of claims 1 to 4, wherein the mask is detachably mounted with respect to the print head. The defect inspection system according to item 1 of the scope of patent application, wherein the mask is disposed opposite the film in a state close to the film, and the mask is provided with a window portion in a position overlooking the recording area. The defect inspection system according to any one of claims 1 to 4 and 6, wherein the film is transported in a direction more upstream than the recording device by a static electricity removing device to The surface of the film is static. The defect inspection system according to item 5 of the scope of patent application, wherein, in the conveying direction of the film, a position more upstream than the recording device is provided with a static electricity removing device to remove static electricity from the surface of the film.