TW201632958A - 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

Optical display device manufacturing method and manufacturing 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 relates to a manufacturing method and a manufacturing apparatus for reversing the other side of a carrier film on the inside by a peeling means disposed at a near position to be pasted by a predetermined roll. The optical film laminate conveyance carrier film is sent to a predetermined position where the carrier film is peeled off, and is bonded to a panel member that is attached to the bonding position by the proximity peeling means to manufacture the optical display device. In the bonding work of the RTP bonding apparatus, when the peeling means is peeled off, whereby the charged elongated roll-shaped carrier film is conveyed by the predetermined position and is recovered, the carrier film is charged The occurrence of frictional charging does not affect the manner in which the panel member is moved toward the predetermined position in the manner in which it is brought into close proximity, and the induction charging of the panel member is controlled.

It is known that static electricity charged in an optical display device has a risk of deteriorating and destroying built-in electronic components. For example, the inner liquid The electronic component of the crystal panel includes a field effect transistor such as a TFT element. In order to prevent electrostatic damage of such electronic parts, in the manufacture of a liquid crystal display device, the manufacturing is usually completed by different processes as shown below.

In general, 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 at least by attaching the polarizing film to the upper and lower surfaces of the liquid crystal panel so as to intersect the transmission axis. In this case, after the end surface of the liquid crystal panel is formed in advance, the liquid crystal display device is completed by the bonding process of the polarizing film, or after the bonding process of the polarizing film is completed, the end surface of the liquid crystal panel is molded to complete the liquid crystal display device. It is a manufacturing method of the liquid crystal display device implemented. However, the charging prevention means for the liquid crystal panel has to be different.

That is, for the former, the polarizing film must be neutralized as shown below. In the latter, a short-circuit ring is formed in advance at the end of the liquid crystal panel, and the short-circuit ring is removed when the end surface of the liquid crystal panel is molded, thereby preventing liquid crystal display. Static damage to the unit.

The carrier film is peeled off and transported by an elongated roll-shaped optical film laminate including a rectangular optical film sheet, whereby the optical film sheet peeled off from the carrier film is sent to a predetermined position for sticking, and is carried. A method and apparatus for manufacturing an optical display device by bonding a rectangular panel member thereto, that is, an RTP bonding method and apparatus, relating to the peeling of the optical film sheet from a carrier film The means of preventing stripping and charging has been opened as in Japan. Proposal described in Japanese Patent Publication No. 2012-224041 (Patent Document 2).

Patent Document 2 discloses a technique for suppressing static electricity generated in an optical film sheet bonded to a panel member by peeling electrification. The present invention relates to an RTP bonding method and apparatus comprising a functional film comprising a base film corresponding to a carrier film and an elongated roll-shaped optical film laminate corresponding to a functional film of an optical film. The functional film sheet corresponding to the optical film sheet is formed, and the carrier film of the optical film laminate of the long roll shape is peeled off by the peeling means, and the optical film is bonded to the panel member to manufacture an optical display device. .

Specifically, it is disclosed that when the base film having a long roll shape is peeled off, the static electricity of the functional film sheet generated by the peeling operation is bonded to the panel member by bonding the functional film sheet to the panel member. In the case of the optical display device, the substrate film is negatively charged (or positively charged) in the case where the electronic component built in the panel member is not electrically broken, and the peeling means is viewed by the charging column. The base film is made of a material on the negative side (or the positive side), thereby controlling the amount of static electricity generated in the base film, thereby suppressing the charge amount of the functional film sheet. In other words, Patent Document 2 describes the amount of charge that suppresses the functional film sheet that is directly bonded to the panel member.

In the RTP bonding method and apparatus, various proposals have been made regarding countermeasures against charging of the panel member. For example, Japanese Laid-Open Patent Publication No. 2002-323686 (Patent Document 3) discloses that an insulating substrate (hereinafter referred to as a "panel member" due to a panel member) is charged to electrostatically charge the panel member to the panel member. Handling In the middle neutralization mode, a plurality of base conductive plates are disposed from upstream to downstream of the conveying device, whereby the panel members are slowly removed during transportation.

However, the countermeasure against electrostatic damage of the electronic component incorporated in the panel member is not limited to the RTP bonding method and apparatus, and a plurality of release film sheets which are formed in a rectangular shape in advance to match the shape of the panel member are prepared. The optical film sheet of the adhesive layer is conveyed to the predetermined position by the panel member and the optical film sheet, and the release film sheet is peeled off from the optical film sheet, and the optical film sheet is adhered to the panel member through the adhesive layer to manufacture the optical display device. In the sheet bonding method and apparatus, various proposals have been made so far.

Japanese Laid-Open Patent Publication No. Hei 11-157013 (Patent Document 4) discloses a mold release layer in which a hardened crucible is formed on one surface of a long roll-shaped carrier film, and a charge preventing layer is formed on the other surface, and the carrier film is reduced. The resulting stripping charge or the carrier film does not generate static electricity. Thereby, even if the optical film or the optical film sheet laminated on the carrier film is peeled off from the carrier film, the electric potential of the peeling charge amount to the optical film or the optical film sheet can be suppressed.

Patent Document 5 to Patent Document 7 additionally disclose an optical film laminate which suppresses electrostatic interference due to peeling electrification as described above. Specifically, it is an adhesive layer provided on the surface on which the adhesive layer of the optical film constituting the optical film laminate is formed, or an adhesive layer in which an optical film is formed by a conductive adhesive. These are each provided with a charge preventing layer, a conductive layer or a conductive adhesive layer on each of the carrier film or the optical film or the optical film sheet constituting the optical film laminate.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. Hei 5-34725

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2012-224041

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2002-323686

[Patent Document 4] Japanese Patent Laid-Open No. Hei 11-157013

[Patent Document 5] Japanese Patent No. 4355215

[Patent Document 6] Japanese Patent Laid-Open Publication No. 2001-318230

[Patent Document 7] Japanese Patent Laid-Open Publication No. 2002-22960

In the production of the optical display device by the RTP bonding apparatus, the long roll-shaped carrier film which is peeled off by the peeling means by the long roll-shaped optical film laminate is transported and recovered. There is a challenge to the technical problem of how to cause the panel member during transportation to be inductively charged by a carrier film that is charged by friction with the peeling means.

In the RTP bonding apparatus, since the entire apparatus is simplified, the conveyance path of the carrier film which is peeled off by the optical film laminate and which is collected and adhered to the predetermined position is adhered by the peeling means for the adhesion of the predetermined position. The conveyance paths of the panel members are arranged to overlap in a state of being parallel or nearly parallel. As a result of intensive research by the inventors, it was found that the carrier film thus recovered and the peeling means were rubbed. The charged potential causes the panel member to be inductively charged to affect the electronic component built into the panel member that is transported toward the bonding position.

Therefore, in particular, in the RTP bonding apparatus, the inductive charging system of the panel member by the charged carrier film which occurs by the arrangement in which the paths of the paths overlap in the parallel or nearly parallel state must be at a certain potential. The following methods are masked. This is a new technical issue of the RTP bonding device.

In the RTP bonding apparatus, the triboelectrically charged shielding film which occurs in the elongated roll-shaped carrier film can be realized by: firstly, an elongated roll-shaped carrier film is formed in the carrier film. An adhesive film layer on one side and a plurality of optical film laminates formed by a plurality of optical film sheets continuously supported by the adhesive layer are continuously fed toward a predetermined position for pasting, and then have a predetermined position to be placed at the pasting position. The top portion of the peeling body at the top of the proximal crucible is folded back on the inner side of the carrier film, and only the carrier film is conveyed by the optical film laminate, and the optical film sheet is sequentially peeled off together with the adhesive layer to be pasted. a predetermined position, on the other hand, the panel member of the built-in electronic component is moved to the top of the peeling body and transported to the predetermined position of the pasting, and finally, the optical film sheet is bonded to one side of the panel member by the adhesive layer in the predetermined position of bonding. When manufacturing an optical display device, the carrier film is folded and transported at the top of the peeling body, and The film is conveyed in the direction opposite to the conveying direction arranged between the shield panel member pasting predetermined position means.

A first aspect of the present invention is a method of manufacturing an optical display device comprising at least a carrier film, an adhesive layer formed on one side of the carrier film, and a plurality of optical film sheets continuously supported by the adhesive layer. The long optical roll-shaped optical film laminate is continuously fed toward a predetermined position of adhesion, and the other side of the carrier film is folded back on the top of the peeling body having the top of the proximal side disposed at the predetermined position of adhesion. The optical film laminate is transported only by the carrier film, and the optical film sheet is sequentially peeled off from the carrier film together with the adhesive layer to the predetermined position of adhesion, and the rectangular panel is formed on the other hand. A method of manufacturing an optical display device by attaching the optical film sheet to one surface of the panel member by the adhesive layer adjacent to the top portion of the peeling body and transporting the sheet to a predetermined position for bonding , its line:

A shielding means is disposed between the carrier film to be conveyed and the panel member conveyed to the predetermined bonding position, whereby the inductive charging generated in the panel member is less than a certain potential when the carrier film that is frictionally charged is transported The way to mask.

In the first aspect of the invention, the panel member may include a liquid crystal panel having an electronic component, and the optical film laminate system may be formed by inserting a plurality of rectangular short sides suitable for the liquid crystal panel in a wide direction. Or the continuous cutting of the length of the long side is supported by the carrier film having a wide-width roll-shaped carrier film having a rectangular long side or a short side suitable for the liquid crystal panel at least along with the adhesive layer. One side A polyvinyl alcohol-based film sheet of a polyvinyl alcohol-based film is composed of a plurality of polyvinyl alcohol-based film sheets. In this aspect, it is preferable that the liquid crystal of the optical display device manufactured by laminating the polyvinyl alcohol-based film sheet on one side of the liquid crystal panel by the adhesive layer does not cause misalignment. The inductive charging of the liquid crystal panel is shielded to a certain potential or less.

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

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

In the first aspect of the invention, it is preferable that the shielding means is formed of a rectangular conductive plate having a front end surface having a surface resistivity of 10 ¹² Ω/sq or less, and in a state where the conductive plate is grounded, The width direction is larger than the width of the carrier film in the width direction, and is disposed in the feeding direction to a position at which the distance between the top of the peeling means and the front end of the conductive plate corresponding thereto is at least 15 mm wide.

A second aspect of the present invention is an apparatus for manufacturing an optical display device comprising at least a carrier film, an adhesive layer formed on one side of the carrier film, and a plurality of optical film sheets continuously supported by the adhesive layer. The long-shaped roll-shaped optical film laminate is sequentially peeled off together with the adhesive layer and sent to a predetermined position for bonding, and the rectangular panel member is conveyed to the foregoing in a manner corresponding to the optical film sheet. Adhering to the predetermined position, in the predetermined position of the adhesion, the optical film sheet is attached to the panel member by the adhesive layer A device for manufacturing an optical display device, comprising: a bonding means for bonding the optical film sheet to one side of the panel member by the adhesive layer at a predetermined position for bonding; Actuating the peeling body in a direction opposite to a feeding direction of the optical film sheet peeled off together with the adhesive layer, and the other surface of the carrier film is folded inside and transported, and has a function The carrier film is disposed on the top of the proximal side of the predetermined position of the pasting; the transporting means is not only the top surface of the peeling body, but the carrier film which is folded inside on the other side is not wound in the peeling body The carrier film is transported in a loose manner, and the carrier film is peeled off together with the adhesive layer to be transported to the predetermined position for bonding; the panel member transporting means is configured to transport the panel member Actuating in a manner to the predetermined position of the pasting; the shielding means is configured The carrier film that is folded back and conveyed at the top of the peeling body and the panel member that is conveyed to the predetermined position of the bonding is caused by friction with the peeling body when the carrier film is conveyed The frictional charging of the carrier film causes the inductive charging of the panel member to be a constant voltage or less; and the control means causes the bonding means, the conveying means, and the panel member conveying means to be associated with each other Actuate.

In a second aspect of the invention, the panel member may include a liquid crystal panel having an electronic component, and the optical film laminate system may be formed by inserting a plurality of rectangular short sides suitable for the liquid crystal panel in a wide direction. Or the continuous cutting of the length of the long side is supported by the carrier film having a wide-width roll-shaped carrier film having a rectangular long side or a short side suitable for the liquid crystal panel at least along with the adhesive layer. The polyvinyl alcohol-based film of one side is composed of a plurality of polyvinyl alcohol-based film sheets. In this aspect, it is preferable that the liquid crystal of the optical display device manufactured by laminating the polyvinyl alcohol-based film sheet on one side of the liquid crystal panel by the adhesive layer does not cause misalignment. The inductive charging of the liquid crystal panel is shielded to a certain potential or less.

In the second aspect of the invention, it is preferable that the potential of the inductively charged layer of the panel member is shielded to be 400 V or less.

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

In a second aspect of the present invention, it is preferable that the shielding means is formed of a rectangular conductive plate having a front end surface having a surface resistivity of 10 ¹² Ω/sq or less, and in a state where the conductive plate is grounded, The width direction is larger than the width of the carrier film in the width direction, and is disposed in the feeding direction to a position at which the distance between the top of the peeling means and the front end of the conductive plate corresponding thereto is at least 15 mm wide.

1‧‧‧Optical film laminate

2‧‧‧ Carrier film

3‧‧‧Optical film sheet

4‧‧‧Adhesive layer

5‧‧‧ Panel components

6‧‧‧Optical display device

10‧‧‧RTP laminating device

50‧‧‧Fitting device

51‧‧‧Finishing roller

60‧‧‧Exfoliation

61‧‧‧Top of peeling body 60

62‧‧‧Contact surface of the peeling body 60 and the optical film laminate 1

63‧‧‧The base of the peeling body 60

80‧‧‧film feeding device

81‧‧‧ Forward feed roller

82‧‧‧Inverted feed roller

90‧‧‧shading board

100‧‧‧Paste the intended location

110‧‧‧Transportation path of carrier film 2

300‧‧‧Standby reservation location

310‧‧‧Transportation path of panel member 5

400,410‧‧‧Self-discharge type static elimination device

R1‧‧‧Reel roll

R2‧‧‧ winding roller

Fig. 1 is a schematic view showing the entire RTP bonding apparatus.

Fig. 2 is a photograph showing a phenomenon of light leakage of an optical display device (liquid crystal panel).

Fig. 3 is a schematic view showing a mechanism of liquid crystal alignment disorder caused by induction charging of an optical display device (liquid crystal panel).

Fig. 4 is a measurement result of light leakage occurring in an optical display device (liquid crystal panel) in which the charge amount is arranged in a high and low order.

Fig. 5 is a schematic view showing the arrangement of a peeling body and a carrier film, and a contact action and a shielding means.

Fig. 6 is a table showing the presence or absence of light leakage phenomenon when materials having different shielding means (Examples 1 to 3) and when shielding means (Comparative Example 1) were not disposed.

Fig. 7 is a table showing the surface resistance value of the shielding means and the inductive charge amount and the presence or absence of light leakage occurring in the liquid crystal panel by the shielding means with respect to the front end position of the peeling means.

Fig. 1(a) is a schematic view showing the entire RTP bonding apparatus. In the RTP bonding apparatus 10, the optical roll laminated body 1 of the elongate roll shape is wound by the unwinding roll R1. The optical film laminate 1 is at least: a carrier film 2 having a width corresponding to the size (long side or short side) of the panel member 5, and an adhesive layer 4 formed on one side of the carrier film 2 and by the adhesive layer 4 Constructed by a plurality of optical film sheets 3 that are continuously supported to make. The optical film sheet 3 is formed to include a layer in which the cut-in line in the width direction (short side or long side) of the corresponding panel member 5 reaches the surface of the carrier film 2, and is laminated on the carrier through the adhesive layer 4. A film sheet of the adhesive layer 4 of the optical film of the film 2.

As shown in Fig. 1(a), the RTP bonding apparatus 10 includes a film feeding device 80 which is constructed by unwinding the optical film laminate 1 by the unwinding roller R1. The feed roller 81 is rotated; and the elongated roll-shaped carrier film 2, which is peeled off by the optical film laminate 1, is wound around the reverse feed roller 82 of the winding roller R2. With such a configuration, the apparatus 10 does not need to loosen the long-shaped roll-shaped optical film laminate 1, that is, conveys toward the pasting predetermined position 100, and is peeled off by the top 61 having the near jaw disposed at the pasting predetermined position 100. The body 60, 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 pasting predetermined position 100. At this time, the carrier film 2 is recovered by the feed roller 110 of the carrier film 2 by the reverse feed roller 82, and is collected by the winding roller R2.

The peeling body 60 having the top portion 61 is a rectangular shape having a width and a length exceeding the width of the optical film laminate 1 or the long side of the panel member 5 as shown in Fig. 1(b), and the top 61 is provided. It is a wedge-shaped structure of the front end. Usually, the top portion 61 constituting the front end portion is disposed at a position close to the predetermined bonding position 100, and the peeling body 60 is disposed obliquely below the conveyance path 310 of the panel member 5. The conveyance path 110 of the carrier film 2 that is folded back and conveyed at the top 61 is preferably positioned so as to form a double structure with the conveyance path 310 of the panel member 5. In The configuration in which the shielding film 90 is disposed between the carrier film 2 on which the top portion 61 of the peeling body 60 is folded and the panel member 5 conveyed to the conveyance path 310 will be described later.

The RTP bonding apparatus 10 is transported to the pasting predetermined position 100 along the conveyance path 310 by the standby predetermined position 300 so as to correspond to the optical film sheet 3 including the adhesive layer 4 which is sent to the bonding predetermined position 100. In the bonding predetermined position 100, the bonding apparatus 50 including the bonding roller 51 bonds the optical film sheet 3 to one surface of the panel member 5 to be conveyed by the adhesive layer 4, thereby manufacturing the optical display device 6.

In the manufacture of the optical display device 6, the panel member 5 constituting the optical display device 6 usually incorporates electronic components such as TFTs, and from the viewpoint of avoiding electrostatic damage, the charging prevention system cannot be ignored. As seen in Patent Document 2, the means for preventing the static electricity generated by the carrier film 2 from being peeled off from the optical film sheet 3 including the adhesive layer 4 of the panel member 5, that is, the peeling electrification means is merely an example. For example, as shown in the schematic diagram of FIG. 1, it is also possible to suppress and control the adhesion layer 4 by peeling off from the carrier film 2 by using the self-discharge type static eliminating device 400, 410 or using an optical film having a conductive function. The potential of the static electricity generated by the optical film sheet 3.

Nevertheless, in the RTP bonding apparatus 10, as seen in the photograph of FIG. 2, the optical display device 6 has a light-transmissive portion due to disorder of liquid crystal alignment. As a result, the transmission inspection of the optical display device 6 as a product becomes impossible, and the continuous manufacture of the optical display device 6 causes an obstacle.

The carrier film 2 is due to the peeling body 60 having the top portion 61 Friction and charge. The frictionally charged carrier film 2 is conveyed to the take-up roll R2 via the conveyance path 110 and is collected. As seen in FIG. 1(a) or (b), the panel member 5 is conveyed in the opposite direction along the conveyance path 310 toward the adhesion predetermined position 100 in the vicinity of the carrier film 2 that is conveyed and recovered.

As shown in the left diagram of FIG. 5, at this time, the panel member 5 is inductively charged by the frictionally charged carrier film 2, and the inductive charging affects the electronic components built in the panel member 5, whereby, as shown in FIG. A light-transmissive portion is formed in the optical display device 6 in which the optical film sheet 3 is bonded to the panel member 5. The optical display device 6 manufactured by bonding the optical film sheet 3 to the panel member 5 as described above is not only difficult to detect by the inspection of the optical display device 6, but also causes the panel member 5 before the optical film sheet 3 is pasted. The built-in electronic parts are electrostatically damaged. In order to avoid such a situation, as shown in the right diagram of FIG. 5, it is necessary to perform the shielding means 90 by means of the shielding means 90 in such a manner that the charge amount of the carrier film 2 generated by the friction with the peeling body 60 having the top portion 61 becomes a certain potential or less. Shaded.

3 is a schematic view for explaining a mechanism in which liquid crystal alignment disorder occurs in the optical display device 6 by inductive charging. The panel member 5 shown in FIGS. 3(a) to 3(c) is formed by sealing a liquid crystal layer between a color filter substrate (CF substrate) on the viewing side and a thin transistor substrate (TFT substrate) on the non-viewing side. The LCD panel is the object. For example, as shown in FIG. 3(b), the panel member 5 which passes the lower side of the carrier film 2 conveyed by the negative electric charge due to frictional charging toward the predetermined position 100 is charged by induction and charges on both sides. polarization.

Specifically, as is clear from the figure, the surface of the CF substrate adjacent to the carrier film 2 is positively charged, and the lower surface of the TFT substrate is negatively charged. As a result, a negative charge is applied to the lower surface of the CF substrate on which the liquid crystal layer is formed, and a positive charge is applied to the upper surface of the TFT substrate on which the liquid crystal layer is formed, and the liquid crystal layer is activated by the potential difference. Since the light passes to the start of the liquid crystal layer, as shown in FIG. 2, the surface of the panel member 5 appears to pass through vainly. If the potential difference is large, it also becomes a cause of electrostatic damage of the transistor.

Fig. 3(c) shows a state in which the charged carrier film 2 is inductively attenuated away from the panel member 5. However, if the panel member 5 is charged more than the upper limit charge amount, the closed state transistor will have a charge, and the decay takes time, and the liquid crystal layer is connected to the state activated by the potential difference, and then passes through as shown in FIG. 2 in succession. status.

In the RTP bonding apparatus 10, it is difficult to cause frictional charging of the carrier film 2 which is peeled off from the optical film laminate 1 by the peeling body 60. This is based on the fact that the transport path 110 of the carrier film 2 that is normally frictionally charged is disposed in close proximity to the transport path 310 of the panel member 5, so that a certain degree of inductive charging of the panel member 5 cannot be avoided. The problem is that it is necessary to verify to what extent the charge amount of the panel member 5, that is, the charge allowable amount, does not cause light leakage of the panel member 5. In order to determine the amount of charge tolerance, the amount of charge (potential) is arranged in a high-low order to measure the light-transmissive portion generated in the panel member 5.

Fig. 4 is a graph showing the measurement results of 44 cases according to a specific material and device. Incidentally, the specific materials and devices set the type ‧ manufacturer's products shown in Figure 4 as a prerequisite. It is clear from Figure 4. Specifically, a carrier film obtained by using a liquid crystal panel of L32-C6 manufactured by Panasonic, a carrier film manufactured by ELB38 manufactured by Mitsubishi Plastics or Cerapeel manufactured by Toray Film, a polarizing film of CMG1765CU manufactured by Nitto Denko, and The specific materials and devices derived from the RTP bonding device shown in Fig. 1 are premised.

In the case of the symbol, the amount of charge of the liquid crystal panel is arranged in a high-low order, and the occurrence of the light-transmissive portion does not occur in three stages, but the light-transmissive portion is weak, and the light-transmissive portion is generated. A result of measurement of the light-transmissive strength of the light-transmissive portion of the liquid crystal panel such as strong occurrence. When the potential of the inductively charged panel member 5 is 400 V or less, the light transmissive portion hardly occurs. Of the 34 cases, only 4 cases had photo-transparent parts, which was also the occurrence of weak light transmission. In the 29th case, the occurrence of strong light transmission intensity was found, which was presumed to be the exception of the liquid crystal panel being inductively charged in a charged state in other processes such as washing. The 39th case was similarly presumed to be an exception. The 35th to 40th cases were at a potential of 400V before and after, although the light transmissive portion occurred, but it was weak. The remaining 50V or more of the 41st case to the 44th case of 4 cases were all strong in light transmission intensity. At a potential of about 400 V, although a weak light transmissive portion occurs, the frequency of occurrence is generally low. However, if the potential of the induction charging exceeds 500 V, it is understood that the light transmission intensity is strong and the frequency of occurrence is close to 100%.

The carrier film 2 at this time is a polyester film, and is a PET film. The carrier film 2 made of such a material is conveyed and recovered by being folded back at the top 61 of the peeling body 60. At this time, the frictional charge amount generated in the carrier film 2 is as shown in the schematic diagram of the left diagram of FIG. 5, and becomes a patent. The charge of the peeling charge amount ±α of the technical problem of Document 1 and the sum of the frictional charge amount ±x of the technical subject (X=±x±α). In the case where the polyester-based carrier film 2 and the stainless steel separator 60 are used, the carrier film 2 usually has a charge amount of 20 kV to 40 kV. The inductive charge amount generated in the panel member 5 by the charged carrier film 2 is 500V to 600V. In this state, a white light-transmissive portion occurs 100% at the start of the liquid crystal layer of the panel member 5.

The invention provides a means for shielding the inductive charging amount of about 500V~600V to 400V. One example of the solution is to arrange the conductive treatment between the conveyance path of the carrier film 2 folded back at the top 61 of the peeling means 60 shown in Figs. 1 and 5 and the panel member 5 conveyed to the predetermined position 100. Means 90 are characteristic.

As is clear from the first to third embodiments shown in FIG. 6, by disposing iron (stainless steel) or a conductive treatment or a resin plate containing carbon in the peeling means, the charge amount of the liquid crystal panel can be made 400 V or less, in the liquid crystal panel. No occurrence of the light transmissive portion was found. In Comparative Example 1 in comparison with the above, the liquid crystal panel of the RTP apparatus which does not use such a masking means has a charge amount of 550 V, and it is of course difficult to avoid occurrence of the light-transmissive portion.

Please refer to Reference Examples 1 to 5 of FIG. Reference Examples 1 to 3 show a shielding means for a conductively treated acryl resin, and specifically, a liquid crystal panel of an RTP device which is formed as a shielding means by using a conductive plate having a surface resistance value not exceeding 10 ¹² Ω/sq. The amount of charge (V). Meanwhile, Reference Example 4 shows the charge amount (V) of the liquid crystal panel of the RTP apparatus which does not use the masking means. Further, Reference Example 5 shows a charge amount (V) of a liquid crystal panel of an RTP apparatus using a conductive plate formed to have a surface resistance value of 10 ¹⁴ Ω/sq exceeding 10 ¹² Ω/sq as a shielding means.

In FIG. 7, the distance between the top of the peeling means and the front end of the shielding means to be disposed is additionally shown. Specifically, the β shown in the right figure of FIG. 5 is different from the RTP device of 5 mm, 10 mm, and 15 mm, respectively. The charge amount of the liquid crystal panel is used as Reference Examples 1 to 3. These charge levels are all below 400V and are within the range of allowable charge. In particular, when β is 10 mm or 5 mm, the occurrence of light leakage of the liquid crystal panel can be sufficiently suppressed, which is preferable. However, in the reference examples, 4 to 5 are all over 500 V, and the light transmittance of the liquid crystal panel is strong, and the light transmissive portion cannot be avoided.

As apparent from the above, the peeling means 90 is disposed between the conveyance path 110 and the panel member conveyance path 310 which are collected by the frictionally charged carrier film 2, and the inductive charge amount from the carrier film 2 to the conveyed panel member 5 is obtained. The suppression of the allowable range, the inductive charging of the panel member 5 can be shielded.

Claims (8)

A method of manufacturing an optical display device comprising an elongated film formed of at least a carrier film, an adhesive layer formed on one side of the carrier film, and a plurality of optical film sheets continuously supported by the adhesive layer The optical film laminate is continuously fed toward a predetermined position of adhesion, and the other side of the carrier film is folded back inside the peeling body having the top portion of the near nail disposed at the predetermined position to be adhered, and is transported by the optical film laminate The carrier film is sent to the predetermined position of adhesion by sequentially peeling off the optical film sheet together with the adhesive film, and the rectangular panel member is brought close to the top of the peeling body and transported to the pasting reservation. a method of manufacturing an optical display device by bonding the optical film sheet to one side of the panel member by the adhesive layer in the predetermined position of bonding, wherein the carrier film and the carrier film to be carried are Carrying to the aforementioned panel member of the aforementioned predetermined position for pasting Shielding means is set, whereby due to the frictional charging due to friction with the material of the peeling occurs in the carrier film when the carrier film is caused by the transfer of inductive charging the panel member at a certain potential less shielding. The method of claim 1, wherein the inductively charged potential of the panel member is 400 V or less. The method of claim 1 or 2, wherein the shielding means is made of a resin made of stainless steel, conductively coated, or A conductive plate made of any one of carbon-containing resins. The method according to any one of the preceding claims, wherein the shielding means is formed by a rectangular conductive plate having a front end surface having a surface resistivity of 10 ¹² Ω/sq or less, in which the conductive In a state in which the board is grounded, the width of the carrier film is larger than the width of the carrier film in the width direction, and the distance between the top of the peeling means and the front end of the conductive plate corresponding thereto is at least 15 mm in the feed direction. Within the location. An apparatus for manufacturing an optical display device, which is formed by at least a carrier film, an adhesive layer formed on one side of the carrier film, and a plurality of optical film sheets continuously supported by the adhesive layer. The optical film laminate, together with the adhesive layer, sequentially peels off the optical film sheet and sends it to a predetermined position for sticking, and conveys the rectangular panel member to the predetermined predetermined position in a manner corresponding to the optical film sheet, in the pasting reservation A device for manufacturing an optical display device by bonding the optical film sheet to one surface of the panel member by the adhesive layer, and comprising: a bonding means for positioning at a predetermined position The optical film sheet is operated by bonding the adhesive layer to one surface of the panel member, and the peeling member is opposite to the feeding direction of the optical film sheet peeled off together with the adhesive layer. The other side of the carrier film functions by being folded back inside and being transported. Arranged at the top and having a predetermined position of the pasting point near; The transporting means is configured such that only the carrier film which is removed from the top of the peeling body and the other side is removed inside is not loosely transported while being wound around the peeling body, thereby The carrier film is moved to the predetermined bonding position while peeling off the optical film sheet together with the adhesive layer, and the panel member conveying means is operated to convey the panel member to the predetermined bonding position; The method is disposed between the carrier film that has been peeled off and transported by the optical film laminate in the top portion of the peeling body, and the panel member that is transported to the predetermined position of the pasting, and When the carrier film is peeled off from the optical film laminate, the frictional charging of the carrier film caused by friction with the peeling body acts on the inductive charging of the panel member to a constant voltage or less; and the control means Providing the bonding means, the conveying means, and the panel structure Conveyance means for generating connected to the actuator. The apparatus of claim 5, wherein the frictionally charged carrier film has an induced charging potential of 400 V or less to the panel member. The apparatus of claim 5, wherein the shielding means is formed of a conductive plate made of stainless steel, a conductively coated resin, or a carbon-containing resin. . The apparatus according to any one of the items 5 to 7, wherein the shielding means is constituted by a rectangular conductive plate having a front end surface having a surface resistivity of 10 ¹² Ω/sq or less, in which the conductive In a state in which the board is grounded, the width of the carrier film is larger than the width of the carrier film in the width direction, and the distance between the top of the peeling means and the front end of the conductive plate corresponding thereto is at least 15 mm in the feed direction. Within the location.