WO2016088498A1 - Manufacturing method and manufacturing device for optical display device - Google Patents

Abstract

When manufacturing an optical display device in an RTP bonding device by: reeling out an optical film laminate of elongated web form comprising an optical film sheet towards a prescribed adhering location, the optical film laminate being supported on one surface of a carrier film via an adhesive layer; conveying the carrier film while inwardly folding the other surface of the carrier film at the apical part of a peeler which is situated near the prescribed adhering location; thereby advancing the material to the prescribed adhering location while successively peeling the optical film sheet, together with the adhesive layer, from the carrier film, while meanwhile bringing a panel member close to the apical part of the peeler and conveying the member to the prescribed adhering location; and bonding the optical film sheet to one of the surfaces of the panel member by means of the adhesive layer at the prescribed adhering location, induced charging of the panel member due to frictional electrification produced in the carrier film by friction with the peeler is kept at or below a constant potential by a shielding means arranged between the carrier film and the panel member.

Description

Manufacturing method and manufacturing apparatus for optical display device

The present invention relates to a method and an apparatus for manufacturing an optical display device by bonding an optical film sheet to a panel member (hereinafter referred to as “RTP bonding method and apparatus”).

More specifically, the present invention conveys the carrier film from the long web-shaped optical film laminate by folding the other side of the carrier film inward through a peeling means disposed in the vicinity of the predetermined position of application, An RTP bonding apparatus for manufacturing an optical display device in which a rectangular optical film sheet peeled from a carrier film is sent to a predetermined position for bonding and is bonded to a panel member which is brought close to the peeling means and conveyed to the predetermined position for bonding. In the pasting step, when the long web-shaped carrier film peeled by the peeling means is transported from the predetermined sticking position and collected, it is transported toward the predetermined sticking position so as to be close thereto. In order to shield the induction charging to the panel member so that the frictional charge generated on the carrier film charged to the panel member is not affected. Production method and a production apparatus.

It is well known that static electricity charged on an optical display device has a risk of deteriorating and destroying built-in electronic components. For example, electronic components built in a liquid crystal panel include field effect transistors such as TFT elements. In order to prevent electrostatic breakdown of these electronic components, in the manufacture of a liquid crystal display device, the manufacture is usually completed through the following different steps.

Generally, a liquid crystal panel has a structure in which a liquid crystal layer is sealed between a color filter (CF substrate) layer and a transparent electrode (TFT substrate) layer. The liquid crystal display device is completed through a process of attaching a polarizing film so as to cross the transmission axis at least on the upper and lower surfaces of the liquid crystal panel. At that time, the end face of the liquid crystal panel is molded in advance and the liquid crystal display device is completed through the polarizing film bonding step, or the end face of the liquid crystal panel is formed after the polarizing film bonding step. Both are methods for manufacturing a liquid crystal display device. However, the antistatic means for the liquid crystal panel must be different.

That is, for the former, the polarizing film must be neutralized as shown below. For the latter, as described in Japanese Patent Laid-Open No. 5-34725 (Patent Document 1), a short ring is formed in advance on the end of the liquid crystal panel, and the end face of the liquid crystal panel is formed when the end face is formed. The electrostatic breakdown of the liquid crystal display device is prevented by removing the short ring.

The carrier film is peeled off and transported from the long web-shaped optical film laminate including the rectangular optical film sheet, and the optical film sheet peeled off from the carrier film is sent to a predetermined position where it is pasted and transported there. Separation caused by peeling off the optical film sheet from a carrier film in a method and apparatus for manufacturing an optical display device by bonding the optical film sheet to a rectangular panel member coming, that is, an RTP bonding method and apparatus As a means for preventing charging, a proposal as described in Japanese Patent Application Laid-Open No. 2012-224041 (Patent Document 2) has been made.

Patent Document 2 discloses a technique for suppressing static electricity generated in an optical film sheet bonded to a panel member by peeling electrification. It forms a functional film sheet corresponding to an optical film sheet from a functional film of a long web-like optical film laminate including a base film corresponding to a carrier film and a functional film corresponding to an optical film. Further, the present invention relates to an RTP bonding method and apparatus for manufacturing an optical display device by bonding a functional film sheet to a panel member while peeling the functional film sheet from a carrier film of a long web-like optical film laminate through a peeling means.

Specifically, the static electricity of the functional film sheet generated by the peeling operation when peeled from the long web-like base film is bonded to the panel member and the optical display device. When the base film is negatively charged (or positive) so that the electronic components built in the panel member are not electrically damaged when manufacturing the panel, the peeling means is viewed from the charged column. The material is located on the minus side (or plus side) of the base film, thereby controlling the amount of static electricity generated on the base film, thereby suppressing the charge amount of the functional film sheet. Is disclosed. That is, Patent Document 2 describes that the charge amount of a functional film sheet directly bonded to a panel member is suppressed.

In the RTP bonding method and apparatus, various proposals have been made regarding measures to prevent electrification occurring in the panel member. For example, Japanese Patent Laid-Open No. 2002-323686 (Patent Document 3) discloses that when an insulating substrate (hereinafter referred to as a “panel member” because it corresponds to a panel member) is charged, the static electricity charged in the panel member is discharged from the panel member. It is disclosed that a plurality of base conductive plates are arranged from the upstream side to the downstream side of the transfer device so as to eliminate static electricity during conveyance, thereby gradually eliminating static electricity during conveyance of the panel member.

However, the countermeasures for preventing electrostatic breakdown of the electronic components built in the panel member are not limited to the RTP bonding method and apparatus, but the mold is formed in advance in a rectangular shape according to the shape of the panel member. Prepare a large number of optical film sheets having an adhesive layer protected by a film sheet, transfer the panel member and the optical film sheet to a predetermined position, peel the release film sheet from the optical film sheet, and remove the optical film sheet. Various proposals have been made so far in a so-called sheet bonding method and apparatus for manufacturing an optical display device by bonding to a panel member via an adhesive layer.

In JP-A-11-157013 (Patent Document 4), a hardened silicone release layer is formed on one side of a long web-like carrier film and an antistatic layer is formed on the other side. It is disclosed that the peel charge amount is reduced or static electricity is not generated in the carrier film. Thereby, even if the optical film or optical film sheet laminated | stacked on a carrier film peels from a carrier film, the electric potential of the peeling charge amount to an optical film or an optical film sheet can be suppressed.

Patent Documents 5 to 7 further disclose an optical film laminate that suppresses such electrostatic damage due to peeling charging. Specifically, the adhesive layer of the optical film constituting the optical film laminate is provided with a conductive layer, or the adhesive layer of the optical film is produced with a conductive adhesive. In any of these, an antistatic layer, a conductive layer, or a conductive adhesive layer is provided on each carrier film, optical film, or optical film sheet constituting the optical film laminate.

JP-A-5-34725 JP 2012-224041 A JP 2002-323686 A Japanese Patent Laid-Open No. 11-157003 Japanese Patent No. 4355215 JP 2001-318230 A Japanese Patent Laid-Open No. 2002-22960

In the production of an optical display device using an RTP bonding apparatus, the present invention is used when a long web-like carrier film peeled from a long web-like optical film laminate through a peeling means is conveyed and collected. In addition, the technical challenge is how to prevent induction charging from being generated from the carrier film charged by friction with the peeling means to the panel member being conveyed.

In the RTP bonding apparatus, since the entire apparatus is made compact, it is transported toward the transport path of the carrier film to be recovered by being peeled off from the optical film laminate by the peeling means close to the predetermined position for pasting and the predetermined position for pasting. The panel member conveyance path is arranged so as to overlap in parallel or close to it. As a result of intensive studies by the inventor, the potential charged by friction with the peeling means of the carrier film collected at that time is an induction that affects the electronic components built in the panel member conveyed toward the bonding position. It has become clear that charging is generated in the panel member.

Therefore, specifically, in the RTP bonding apparatus, the induction charging from the charged carrier film to the panel member generated by the arrangement in which the paths overlap each other in parallel or close to each other is below a certain potential. Must be shielded as follows. This is a new technical problem of the RTP bonding apparatus.

In the RTP laminating apparatus, the frictional charge generated on the long web-like carrier film is shielded first through the long web-like carrier film, the adhesive layer formed on one surface of the carrier film, and the adhesive layer. A long web-like optical film laminate composed of a plurality of optical film sheets continuously supported is fed toward a predetermined application position, and then a peeling body having a top disposed in the vicinity of the predetermined application position The other side of the carrier film is folded inward at the top of the film, and only the carrier film is transported from the optical film laminate, and the optical film sheet is sequentially peeled off from the carrier film together with the adhesive layer, and sent to a predetermined position. Then, the panel member with a built-in electronic component is conveyed close to the top of the peeled body at the predetermined application position, and finally the predetermined application position is reached. When the optical film sheet is bonded to one surface of the panel member with an adhesive layer to produce an optical display device, the carrier film folded and conveyed at the top of the release body and the direction in which the carrier film is conveyed It can implement | achieve by arrange | positioning a shielding means between the panel members conveyed to the sticking predetermined position in the opposite direction.

According to a first aspect of the present invention, there is provided a long web comprising at least a carrier film, an adhesive layer formed on one surface of the carrier film, and a plurality of optical film sheets continuously supported through the adhesive layer. The optical film laminated body is fed out toward a predetermined position for pasting, and the other surface of the carrier film is folded inward at the top of the peeling body having a top disposed in the vicinity of the predetermined position for pasting. Only the carrier film is transported from the laminate, thereby feeding the optical film sheet together with the adhesive layer from the carrier film to the predetermined position while sequentially peeling the rectangular film member, It is brought close to the top and transported to the predetermined sticking position. At the predetermined sticking position, the optical member is placed on one surface of the panel member The Irumushito stuck by said adhesive layer, a method of manufacturing an optical display device,
Inductive charging generated in the panel member when the carrier film that is frictionally charged is transported by disposing a shielding means between the transported carrier film and the panel member transported to the predetermined sticking position. Is a method of shielding so as to be equal to or less than a certain potential.

1st aspect of this invention WHEREIN: The said panel member contains the liquid crystal panel in which the electronic component was incorporated, and the said optical film laminated body has the width | variety suitable for the rectangular long side or short side of the said liquid crystal panel. A plurality of cuts having a length matching the rectangular short side or the long side of the liquid crystal panel are formed in the width direction in a polyvinyl alcohol film laminated with at least an adhesive layer on one surface of a long web-like carrier film. It can also be comprised from the several polyvinyl alcohol-type film sheet supported continuously by this. In that aspect, the liquid crystal panel is charged in an inductive manner so that alignment disorder does not occur in the liquid crystal of the optical display device manufactured by bonding the polyvinyl alcohol film sheet to the one surface of the liquid crystal panel with the adhesive layer. It is preferable to shield below a certain potential.

In the first aspect of the present invention, it is preferable that the induction charging potential for the panel member is 400 V or less.

In the first aspect of the present invention, it is preferable that the shielding means is composed of a conductive plate made of stainless steel, conductively coated resin, or carbon-containing resin.

In the first aspect of the present invention, the shielding means is composed of a rectangular conductive plate having a tip surface with a surface resistivity of 10 ¹² Ω / sq or less, and the conductive plate is grounded. It has a width larger than the carry film in the width direction, and is arranged so that the distance between the top of the peeling means and the corresponding tip of the conductive plate reaches at least 15 mm width in the feeding direction. preferable.

According to a second aspect of the present invention, there is provided a long web comprising at least a carrier film, an adhesive layer formed on one surface of the carrier film, and a plurality of optical film sheets continuously supported through the adhesive layer. The optical film sheet and the adhesive layer are sequentially peeled from the optical film laminate in a shape and sent to a predetermined position, and a rectangular panel member is conveyed to the predetermined position to correspond to the optical film sheet, In the sticking predetermined position, an apparatus for manufacturing an optical display device by bonding the optical film sheet to the one surface of the panel member with the adhesive layer,
A bonding means that operates to bond the optical film sheet to one surface of the panel member by the adhesive layer at the predetermined bonding position;
The top portion disposed in the vicinity of the predetermined position for applying, which acts so that the other surface of the carrier film is folded inward in the direction opposite to the feeding direction of the optical film sheet peeled off together with the adhesive layer. A peeled body having
Only the carrier film whose other surface is folded inward at the top of the peelable body is conveyed without being loosened while being wound around the peelable body, whereby the carrier film and the adhesive layer are used together with the adhesive layer. A transport means that operates to send the optical film sheet to the predetermined position while peeling;
A panel member conveying means that operates to convey the panel member to the predetermined position of attachment;
Friction between the carrier film, which is disposed between the carrier film that is folded and conveyed at the top of the peeling body, and the panel member that is conveyed to the pasting predetermined position, when the carrier film is conveyed. Shielding means that acts so that induction charging to the panel member due to frictional charging generated in the carrier film is below a certain voltage;
Control means for associating and operating the laminating means, the conveying means, and the panel member conveying means,
It is the apparatus containing.

2nd aspect of this invention WHEREIN: The said panel member contains the liquid crystal panel in which the electronic component was incorporated, and the said optical film laminated body has the width | variety suitable for the rectangular long side or short side of the said liquid crystal panel. A plurality of cuts having a length matching the rectangular short side or the long side of the liquid crystal panel are formed in the width direction in a polyvinyl alcohol film laminated with at least an adhesive layer on one surface of a long web-like carrier film. It can also be comprised from the several polyvinyl alcohol-type film sheet supported continuously by this. In this aspect, the liquid crystal panel is charged in an inductive manner so that alignment disorder does not occur in the liquid crystal of an optical display device manufactured by bonding the polyvinyl alcohol film sheet to the one surface of the liquid crystal panel with the adhesive layer. Is preferably shielded below a certain potential.

In the second aspect of the present invention, it is preferable that the induction charging potential with respect to the panel member is shielded to 400 V or less.

In the second aspect of the present invention, the shielding means may be a conductive plate made of either stainless steel, conductively coated resin, or carbon-containing resin.

In the second aspect of the present invention, the shielding means is composed of a rectangular conductive plate having a tip surface with a surface resistivity of 10 ¹² Ω / sq or less, and the conductive plate is grounded. It has a width larger than the carry film in the width direction, and is arranged so that the distance between the top of the peeling means and the corresponding tip of the conductive plate reaches at least 15 mm width in the feeding direction. preferable.

It is a schematic diagram showing the whole RTP bonding apparatus. It is a photograph which shows the light leakage phenomenon of an optical display apparatus (liquid crystal panel). It is a schematic diagram of the mechanism of liquid crystal alignment disorder by the induction charging of an optical display device (liquid crystal panel). It is a measurement result of light leakage generated in an optical display device (liquid crystal panel) by arranging charge amounts in order of height. It is a schematic diagram explaining the contact effect | action of a peeling body and a carrier film, and arrangement | positioning of a shielding means. It is a table | surface which shows the presence or absence of generation | occurrence | production of the light omission phenomenon at the time of the material (Examples 1-3) from which a shielding means differs, and the shielding means not arrange | positioned (Comparative Example 1). It is a table | surface showing the presence or absence of the light leakage phenomenon of the induction charge amount which generate | occur | produces in a liquid crystal panel with the surface resistance value of a shielding means, and the front-end | tip position of the shielding means with respect to a peeling means.

Fig. 1 (a) is a schematic diagram showing the entire RTP bonding apparatus. In the RTP bonding apparatus 10, the long web-like optical film laminate 1 is wound around the feeding roll R1. The optical film laminate 1 has a carrier film 2 having a width corresponding to at least the dimension (long side or short side) of the panel member 5, and an adhesive layer 4 formed on one surface of the carrier film 2. And a plurality of optical film sheets 3 continuously supported by. The optical film sheet 3 has a cut line in the width direction corresponding to the dimension (short side or long side) of the panel member 5 on the optical film laminated on the carrier film 2 via the adhesive layer 4 on the surface of the carrier film 2. It is formed in the film sheet containing the adhesion layer 4 put so that it may reach.

As shown in FIG. 1A, the RTP bonding apparatus 10 has a long web-like shape peeled from the normal rotation feed roller 81 that feeds the optical film laminate 1 from the feed roll R <b> 1 and the optical film laminate 1. A film feeding device 80 including a reverse feed roller 82 for winding the carrier film 2 on a winding roll R2 is included. With such a configuration, the apparatus 10 conveys the long web-shaped optical film laminate 1 toward the predetermined application position 100 without loosening, and the peeling body 60 having the top portion 61 disposed in the vicinity of the predetermined application position 100. The optical film sheet 3 including the adhesive layer 4 is peeled off from the carrier film 2 of the optical film laminate 1 and sent to the predetermined position 100 for pasting. At that time, the carrier film 2 is collected by the reverse feed roller 82 to the take-up roll R <b> 2 through the conveyance path 110 of the carrier film 2.

As shown in FIG. 1B, the peeling body 60 having the top portion 61 has a rectangular shape having a width and length exceeding the width of the optical film laminate 1 or the long side of the panel member 5. It is possible to assume a cross-sectional wedge-shaped structure having a tip as a tip. Normally, the top 61 constituting the tip is disposed at a position close to the predetermined sticking position 100, and the peeling body 60 is disposed so as to be inclined immediately below the conveyance path 310 of the panel member 5. The conveyance path 110 of the carrier film 2 that is folded and conveyed at the top 61 is preferably positioned so as to have a double structure with the conveyance path 310 of the panel member 5. A structure in which the shielding means 90 is disposed between the carrier film 2 folded back at the top 61 of the peeling body 60 and the panel member 5 conveyed to the conveyance path 310 will be described later.

The RTP bonding apparatus 10 sends the panel member 5 from the standby predetermined position 300 along the conveyance path 310 to the predetermined sticking position 100 so as to correspond to the optical film sheet 3 including the adhesive layer 4 sent to the predetermined sticking position 100. It is done. At the predetermined sticking position 100, the optical display device 6 is manufactured by bonding the optical film sheet 3 with the adhesive layer 4 to one surface of the panel member 5 to which the bonding device 50 including the bonding roller 51 is conveyed.

In the production of the optical display device 6, the panel member 5 constituting the optical display device 6 usually contains electronic components such as TFTs, and from the viewpoint of avoiding electrostatic breakdown, it is technically impossible to prevent antistatic. It is a problem. As already seen in Patent Document 2, an example of a means for preventing static electricity, that is, peeling electrification generated when the optical film sheet 3 including the adhesive layer 4 bonded to the panel member 5 is peeled from the carrier film 2 is an example. Only. For example, as shown in the schematic diagram of FIG. 1, an optical film including the adhesive layer 4 by peeling from the carrier film 2 by using the self-discharge type static eliminators 400 and 410 or using an optical film having a conductive function. The potential of static electricity generated on the sheet 3 can be suppressed and controlled.

Nevertheless, in the RTP bonding apparatus 10, as shown in the photograph of FIG. 2, a light escape portion is generated in the optical display device 6 due to the disorder of the alignment of the liquid crystal. As a result, the transmission inspection of the optical display device 6 as a product becomes impossible, which hinders continuous production of the optical display device 6.

The carrier film 2 is charged by friction with the peeling body 60 having the top portion 61. The frictionally charged carrier film 2 is conveyed to the take-up roll R2 via the conveyance path 110 and collected. As seen in FIG. 1 (a) or (b), the panel member 5 is transported in the reverse direction near the carrier film 2 to be transported and collected along the transport path 310 toward the predetermined application position 100. .

As shown in the left diagram of FIG. 5, the panel member 5 is induced by the carrier film 2 that is frictionally charged at that time, and the induced charging affects the electronic components incorporated in the panel member 5. As a result, as shown in FIG. 2, a light leakage portion is generated in the optical display device 6 in which the optical film sheet 3 is bonded to the panel member 5. Thus, the optical display device 6 manufactured by bonding the optical film sheet 3 to the panel member 5 not only makes it difficult to detect a defect by the transmission inspection of the optical display device 6, but also attaches the optical film sheet 3. The electronic component in which the previous panel member 5 is built is also electrostatically destroyed. In order to avoid such a situation, as shown in the right diagram of FIG. 5, the shielding means 90 ensures that the charge amount of the carrier film 2 generated by the friction with the peeling body 60 having the top portion 61 is equal to or less than a predetermined potential. Need to be shielded.

FIG. 3 is a schematic diagram for explaining a mechanism of liquid crystal alignment disorder generated in the optical display device 6 due to induction charging. The panel member 5 shown in FIGS. 3A to 3C is a liquid crystal panel in which a liquid crystal layer is sealed between a color filter substrate (CF substrate) on the viewing side and a thin transistor substrate (TFT substrate) on the non-viewing side. Is targeted. For example, the panel member 5 shown in FIG. 3 (b) passing through the lower side of the carrier film 2 conveyed with a negative charge due to frictional charging toward the predetermined position 100 is charged on both sides by induction charging. Turn into.

Specifically, as is clear from this figure, the surface of the CF substrate close to the carrier film 2 has a positive charge, and the lower surface of the TFT substrate has a negative charge. As a result, the lower surface of the CF substrate that forms the upper surface of the liquid crystal layer has a negative charge, and the upper surface of the TFT substrate that forms the liquid crystal layer has a positive charge, and the liquid crystal layer is activated by the potential difference. Since the light passes through the start-up portion of the liquid crystal layer, the surface of the panel member 5 appears to be white as shown in FIG. If the potential difference is large, it may cause electrostatic breakdown of the transistor.

FIG. 3C shows a state in which the charged carrier film 2 is far from the panel member 5 and the induced charging is attenuated. However, if the panel member 5 is charged exceeding the upper limit charge amount, the closed transistor is charged and takes time to decay, and the liquid crystal layer continues to be activated by the potential difference. The state of being white as shown in 2 continues.

In the RTP bonding apparatus 10, it is difficult to prevent the carrier film 2 peeled from the optical film laminate 1 by the peeled body 60 from causing frictional charging. This is because, since the conveyance path 110 of the carrier film 2 that is triboelectrically charged and the conveyance path 310 of the panel member 5 are normally arranged close to each other, it is inevitable that some induction charging is generated in the panel member 5. . The problem is that it is necessary to verify the amount of charge of the panel member 5, that is, the allowable charge amount, so that the light leakage of the panel member 5 does not occur. In order to determine the allowable charge amount, the light leakage portions generated in the panel member 5 were measured by arranging the charge amounts (potentials) in order of height.

FIG. 4 is a graph showing the measurement results of 44 cases based on specific materials and equipment. By the way, the specific materials and equipment are based on the model / manufacturer product shown in FIG. Specifically, it is clear from FIG. 4 that a liquid crystal panel of Panasonic L32-C6, a carrier film made of either Mitsubishi Plastic ELB38 or Toray Film Processing Therapy, a polarizing film of Nitto Denko CMG1765CU, It is the data on the premise of the specific material and apparatus derived | led-out by the RTP bonding apparatus like FIG.

● The LCD panel shows 44 examples arranged in order of the amount of charge of the liquid crystal panel, the occurrence of no light omission, the occurrence of weak light omission, and the occurrence of strong light omission It is the measurement result which represented the light leakage intensity | strength of the light leakage part of this in three steps. Looking at an example in which the potential of the induction charging of the panel member 5 is 400 V or less, almost no light leakage occurs. Of the 34 cases, only 4 cases have the occurrence of light leakage, but this is also the occurrence of low light leakage intensity. In the 29th case, a strong light leakage intensity is observed, but this is presumed to be an exceptional case where the liquid crystal panel is charged inductively in a charged state in another process such as cleaning. The 39th case is also estimated to be exceptional. In the 35th to 40th examples, at a potential of around 400 V, light leakage is generated but weak. The remaining 4 cases of the 41st to 44th cases of 500V or more are all in which the light leakage intensity is high. At a potential of about 400 V, although weak light omissions occur, the frequency of occurrence is generally low. However, it has been clarified that when the potential of induction charging exceeds 500 V, the light leakage intensity is strong and the frequency of occurrence is close to 100%.

The carrier film 2 at this time is a polyester film, so-called PET film. The carrier film 2 made of such a material is folded and conveyed at the top 61 of the release body 60 and collected. At this time, as shown in the schematic diagram of FIG. 5, the triboelectric charge amount generated in the carrier film 2 is the difference between the peel charge amount ± α of the technical problem of Patent Document 1 and the triboelectric charge amount ± x of the present technical problem. The total charge (X = ± x ± α) is obtained. When the polyester carrier film 2 is made of the stainless steel release body 60, the charge amount of the carrier film 2 is normally 20 kV to 40 kV. The induced charge amount generated in the panel member 5 by the charged carrier film 2 is 500V to 600V. In this state, 100% of a white light leakage portion is generated at the starting position of the liquid crystal layer of the panel member 5.

The present invention is to provide means for shielding the induction charge amount of about 500V to 600V to about 400V. As an example of the solution, the conductive treatment is performed between the carrier accounting of the carrier film 2 folded at the top 61 of the peeling unit 60 shown in FIGS. 1 and 5 and the panel member 5 conveyed to the predetermined paste position 100. The shielding means 90 is arranged.

As is apparent from Examples 1 to 3 shown in FIG. 6, the charge amount of the liquid crystal panel is set to 400 V by disposing a resin plate that is made of iron (stainless steel), conductively treated, or contains carbon as a peeling means. The liquid crystal panel does not show any light leakage. In Comparative Example 1 compared with these, the charge amount of the liquid crystal panel of the RTP device that does not use such shielding means has reached 550 V, and it is naturally difficult to avoid the occurrence of light leakage.

See Reference Examples 1 to 5 in FIG. In Reference Examples 1 to 3, the shielding means of the acrylic resin subjected to the conductive treatment, specifically, the liquid crystal panel of the RTP apparatus using a conductive plate having a surface resistance value so as not to exceed 10 ¹² Ω / sq as the shielding means. The charge amount (V) is shown. In addition, Reference Example 4 shows the charge amount (V) of the liquid crystal panel of the RTP apparatus that does not use the shielding means. Furthermore, Reference Example 5 shows the charge amount (V) of the liquid crystal panel of the RTP device using a conductive plate having a surface resistance value of 10 ¹⁴ Ω / sq, which is 10 ¹² Ω / sq, which is higher than 10 ¹² Ω / sq.

FIG. 7 further shows an RTP apparatus in which the distance between the top of the peeling means and the tip of the shielding means arranged, specifically, β shown in the right figure of FIG. 5 is different from 5 mm, 10 mm, and 15 mm, respectively. The charge amounts of the liquid crystal panels are shown as Reference Examples 1 to 3. These charge amounts are all 400V or less, and are within the allowable charge amount range. In particular, when β is 10 mm or 5 mm, the occurrence of light leakage phenomenon of the liquid crystal panel can be sufficiently suppressed, which is preferable. However, all of Reference Examples 4 to 5 exceed 500 V, and the light leakage intensity of the liquid crystal panel is strong, and the occurrence of a light leakage portion cannot be avoided.

As is clear from the above, the carrier to the panel member 5 to be conveyed is provided by disposing the peeling means 90 between the conveyance path 110 where the frictionally charged carrier fill 2 is collected and the panel member conveyance path 310. It is clear that the induction charge amount from the fill 2 is kept within an allowable range, and the induction charge to the panel member 5 can be shielded.

DESCRIPTION OF SYMBOLS 1 Optical film laminated body 2 Carrier film 3 Optical film sheet 4 Adhesive layer 5 Panel member R1 Feeding roll R2 Winding roll 10 RTP bonding apparatus 50 Bonding apparatus 60 Peeling body 61 Top part 62 of peeling body 60 Optical film of peeling body 60 Contact surface 63 with laminate 1 Base 80 of peeled body 60 Film feed device 81 Forward feed roller 82 Reverse feed roller 90 Shield plate 100 Prefixed position 110 Carrier film 2 transport path 300 Standby predetermined position 310 Transport of panel member 5 Route

Claims (8)

1. A long web-shaped optical film laminate comprising at least a carrier film, an adhesive layer formed on one surface of the carrier film, and a plurality of optical film sheets continuously supported through the adhesive layer is pasted. To the position,
   The other surface of the carrier film is folded inward at the top of the peeled body having a top disposed in the vicinity of the predetermined sticking position, and the carrier film is conveyed from the optical film laminate, thereby the carrier film. While sequentially peeling the optical film sheet together with the adhesive layer, and sent to the predetermined position,
   A rectangular panel member is brought close to the top of the release body and conveyed to the predetermined position for pasting,
   In the pasting predetermined position, the optical film sheet is bonded to the one surface of the panel member by the adhesive layer,
   A method of manufacturing an optical display device, comprising:
   By arranging a shielding means between the carrier film to be conveyed and the panel member to be conveyed to the predetermined position for attachment,
   A method of shielding inductive charging to the panel member due to frictional charging generated in the carrier film due to friction with the peeling body when the carrier film is conveyed to a certain potential or less.
2. The method according to claim 1, wherein the potential of induction charging with respect to the panel member is set to 400 V or less.
3. The said shielding means was comprised from the electrically conductive board made from either the product made from stainless steel, resin by which conductive coating was carried out, or carbon-containing resin, It was described in any one of Claim 1 or 2 characterized by the above-mentioned. Method.
4. The shielding means is composed of a rectangular conductive plate having a tip surface with a surface resistivity of 10 ¹² Ω / sq or less, and is larger than the carry film in the width direction when the conductive plate is grounded. 2. A width according to claim 1, wherein the distance between the top of the peeling means and the tip of the conductive plate corresponding to the width is at least 15 mm in the feed direction. 4. The method according to any one of 3 to 3.
5. The adhesive from a long web-like optical film laminate comprising at least a carrier film, an adhesive layer formed on one surface of the carrier film, and a plurality of optical film sheets continuously supported through the adhesive layer The optical film sheet is sequentially peeled off together with the layer and sent to a predetermined application position, and a rectangular panel member is conveyed to the predetermined application position so as to correspond to the optical film sheet. An apparatus for manufacturing an optical display device by bonding the optical film sheet to the one surface with the adhesive layer,
   A bonding means that operates to bond the optical film sheet to one surface of the panel member by the adhesive layer at the predetermined bonding position;
   The top portion disposed in the vicinity of the predetermined position for applying, which acts so that the other surface of the carrier film is folded inward in the direction opposite to the feeding direction of the optical film sheet peeled off together with the adhesive layer. A peeled body having
   Only the carrier film whose other surface is folded inward at the top of the peelable body is conveyed without being loosened while being wound around the peelable body, whereby the optical film together with the adhesive layer from the carrier film is transported. A transport means that operates to send the film sheet to the predetermined position while peeling off the film sheet; and
   A panel member conveying means that operates to convey the panel member to the predetermined position of attachment;
   From the optical film laminate to the carrier film disposed between the carrier film peeled off and transported from the optical film laminate at the top of the peelable body and the panel member transported to the predetermined sticking position. Shielding means that acts so that induction charging to the panel member due to frictional charging generated in the carrier film due to friction with the peeling body when being peeled off is below a certain voltage;
   Control means for associating and operating the laminating means, the conveying means, and the panel member conveying means,
   The apparatus characterized by including.
6. 6. An apparatus according to claim 5, wherein the frictionally charged carrier film has an induction charging potential of 400 V or less with respect to the panel member.
7. 7. The shielding means according to claim 5, wherein the shielding means is made of a conductive plate made of stainless steel, resin with conductive coating, or made of carbon-containing resin. apparatus.
8. The shielding means is composed of a rectangular conductive plate having a tip surface with a surface resistivity of 10 ¹² Ω / sq or less, and is larger than the carry film in the width direction when the conductive plate is grounded. 6. The apparatus according to claim 5, wherein the distance between the top of the peeling means and the corresponding tip of the conductive plate is at least 15 mm in the feed direction. To 7. The device according to any one of 7 to 7.

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