JP2012159713A - Manufacturing method of film-like product, manufacturing apparatus of film-like product, and mask - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of a manufacturing apparatus of film-like product getting bigger in size due to the necessity of having a mask, a light source and a space for an exposure area equal to or more than one pattern which is finally desired.SOLUTION: A manufacturing method of a film-like product includes a conveyance step in which a long-length film 90 is conveyed in the longitudinal direction and an exposure step in which the film 90 is exposed to light by using an exposure device which exposes a prescribed exposure area 80 to light. With the conveyance step and the exposure step, a longer portion of the film 90 than the length of the exposure area of the exposure device in the longitudinal direction is exposed to light with no break.

Description

  The present invention relates to a film-shaped product manufacturing method, a film-shaped product manufacturing apparatus, and a mask.

There is known a manufacturing method of a film-like product in which an entire pattern is exposed on a film and a film having a length of one pattern is conveyed between the exposures (for example, Patent Document 1).
[Prior art documents]
[Patent Literature]
[Patent Document 1] Japanese Patent Laid-Open No. 4-97155

  However, in the above-described method, there is a problem that a mask of a desired pattern, a light source, and a place are finally required, and a manufacturing apparatus for a film-like product becomes large.

  In the first aspect of the present invention, a transport step for transporting a long film in the longitudinal direction and an exposure step for exposing the film using an exposure device for exposing a predetermined exposure region are provided. In the transport step and the exposure step, there is provided a method for producing a film-like product in which the film is exposed without a break longer than the length in the longitudinal direction in the exposure region of the exposure apparatus.

  In the 2nd aspect of this invention, it is provided with the conveyance part which conveys a elongate film to a longitudinal direction, and the exposure part which exposes the said film in a predetermined exposure area | region, The said longitudinal direction in the said exposure area | region An apparatus for producing a film-like product is provided which exposes the film without any breaks.

  According to a third aspect of the present invention, there is provided a mask for exposing the film with the first polarized light and the second polarized light from the polarization output unit while conveying the long film in the longitudinal direction. A first transmissive region that transmits polarized light, and a second transmissive region that transmits second polarized light whose polarization direction intersects with the first polarized light, wherein the first transmissive region and the second transmissive region are at least Provided is a mask in which a part is arranged at different positions in the width direction crossing the longitudinal direction.

  In the fourth aspect of the present invention, a mask for exposing the film with polarized light from a polarization output unit while conveying a long film in the longitudinal direction, the width direction intersecting the longitudinal direction And a mask having a transmission region that is disposed between the polarization output unit and the film and transmits the polarized light.

  It should be noted that the above summary of the invention does not enumerate all the necessary features of the present invention. In addition, a sub-combination of these feature groups can also be an invention.

It is a whole top view of the phase difference plate by this embodiment. It is a longitudinal cross-sectional view along the II-II line of FIG. It is a whole block diagram of the phase difference plate manufacturing apparatus by this embodiment. It is a whole perspective view of an exposure part. It is a bottom view of a mask. It is a longitudinal cross-sectional view along the VI-VI line of FIG. It is a perspective view of an upstream tension roll and a downstream tension roll. It is a perspective view of a pair of tension | tensile_strength roll by another embodiment. It is a side view of the upstream tension roll of FIG. It is a bottom view of the mask by another embodiment. It is a bottom view of the mask by another embodiment. It is a bottom view of the mask by another embodiment. It is a bottom view of the mask by another embodiment. It is a bottom view of the mask by another embodiment.

  Hereinafter, the present invention will be described through embodiments of the invention, but the following embodiments do not limit the invention according to the claims. In addition, not all the combinations of features described in the embodiments are essential for the solving means of the invention.

  FIG. 1 is an overall plan view of the retardation plate according to the present embodiment. The phase difference plate 100 is an example of a film exposed by the method for manufacturing a film-like product according to the present embodiment. The phase difference plate 100 is provided on the image output side of the liquid crystal image generation unit of the stereoscopic image display device, and outputs a right-eye image and a left-eye image.

  The phase difference plate 100 is formed in a rectangular shape having a side of several centimeters to several meters. As shown in FIG. 1, the phase difference plate 100 includes a cut film 102, a polarization modulation unit 104, and a polarization modulation unit 106.

  The cutting film 102 is formed by cutting a long film 90 made of resin into a certain length. The cut film 102 supports the polarization modulation unit 104 and the polarization modulation unit 106. The cut film 102 can be composed of a cycloolefin-based film. As the cycloolefin-based film, a cycloolefin polymer (= COP), more preferably a cycloolefin copolymer (= COC), which is a copolymer of cycloolefin polymers, can be used. An example of the COP film is ZEONOR film ZF14 manufactured by Nippon Zeon. Moreover, you may comprise the cutting film 102 with the material containing a triacetyl cellulose (= TAC). Examples of the TAC film include Fujitac T80SZ manufactured by Fuji Photo Film Co., Ltd. In addition, when using a cycloolefin type film, it is preferable to use a high toughness type film from a viewpoint of brittleness.

  The polarization modulation unit 104 and the polarization modulation unit 106 are formed in the same shape in plan view. The polarization modulator 104 and the polarization modulator 106 have a rectangular shape extending along the longitudinal direction of the cut film 102. The polarization modulator 104 and the polarization modulator 106 are alternately arranged with one side in contact with each other.

  The polarization modulator 104 and the polarization modulator 106 modulate the polarization state of the transmitted polarized light. An example of the polarization modulator 104 and the polarization modulator 106 is a quarter wavelength plate. For example, the polarization modulator 104 has an optical axis parallel to the arrow 110 described at the right end of the polarization modulator 104 of FIG. Thus, for example, when linearly polarized light having a polarization direction rotated by 45 ° from the arrow 110 is incident, the polarization modulation unit 104 modulates the polarized light into circularly polarized light having a counterclockwise polarization direction indicated by the adjacent arrow 112. Output. The polarization modulation unit 106 has, for example, an optical axis that is parallel to the arrow 114 described at the right end of the polarization modulation unit 106 in FIG. 1 and is orthogonal to the optical axis of the polarization modulation unit 106. Thereby, for example, when linearly polarized light having a polarization direction rotated by 45 ° from the arrow 110 is incident, the polarization modulation unit 106 modulates the polarized light into circularly polarized light having a clockwise polarization direction indicated by the adjacent arrow 116. Output.

  As a result, even when linearly polarized light having the same polarization direction is incident on the polarization modulation unit 104 and the polarization modulation unit 106, the polarization direction of the polarization output from the polarization modulation unit 106 and the polarization of the polarization output from the polarization modulation unit 104 The direction is different. For example, the polarization direction of the polarization output from the polarization modulation unit 106 is opposite to the polarization direction of the polarization output from the polarization modulation unit 104. The user can view the stereoscopic image by viewing these polarized light with the right eye or the left eye.

  2 is a longitudinal sectional view taken along line II-II in FIG. As shown in FIG. 2, each polarization modulation unit 104 and polarization modulation unit 106 includes an alignment film 120 and a liquid crystal film 122.

  The alignment film 120 is formed on the surface of the cut film 102 and in a region where the polarization modulator 104 and the polarization modulator 106 are formed. A known photo-alignment compound can be applied to the alignment film 120. Examples of the photo-alignment compound include compounds of a photodecomposition type, a photo two-quantum type, a photo isomer type, and the like. In the alignment film 120, the alignment film 120 formed in the region where the polarization modulation unit 104 is formed is aligned corresponding to the optical axis of the polarization modulation unit 104. Among the alignment films 120, the alignment film 120 formed in the region where the polarization modulation unit 106 is formed is aligned corresponding to the optical axis of the polarization modulation unit 106.

  The liquid crystal film 122 can be formed of a liquid crystal polymer that can be cured by ultraviolet rays or heating. The molecules of the liquid crystal film 122 are aligned along the alignment of the alignment film 120. Accordingly, the molecules of the liquid crystal film 122 in the region where the polarization modulator 104 is formed are aligned corresponding to the optical axis of the polarization modulator 104. In addition, the molecules of the liquid crystal film 122 in the region where the polarization modulator 106 is formed are aligned corresponding to the optical axis of the polarization modulator 106.

  FIG. 3 is an overall configuration diagram of the retardation plate manufacturing apparatus according to the present embodiment. The up and down directions indicated by arrows in FIG. 3 are the up and down directions of the retardation plate manufacturing apparatus. Further, upstream and downstream are upstream and downstream in the transport direction. The transport direction is the same as the longitudinal direction of the film 90.

  The phase difference plate manufacturing apparatus 10 is an example of a film-shaped product manufacturing apparatus. As shown in FIG. 3, the retardation plate manufacturing apparatus 10 includes a delivery roll 12, an alignment film application unit 14, an alignment film drying unit 16, an exposure unit 18, a liquid crystal film application unit 20, and a liquid crystal film alignment unit. 22, a liquid crystal film curing unit 24, a separate film supply unit 26, and a take-up roll 28.

  The delivery roll 12 is disposed on the most upstream side of the transport path of the film 90. A supply film 90 is wound around the outer periphery of the delivery roll 12. The delivery roll 12 is rotatably supported. Thereby, the delivery roll 12 can hold | maintain the film 90 so that delivery is possible. The delivery roll 12 may be configured to be rotatable by a drive mechanism such as a motor, or may be configured to be driven in accordance with the rotation of the take-up roll 28. Or you may provide the mechanism which drives the film 90 in the middle of a conveyance path | route.

  The alignment film application part 14 is an example of an application part. The alignment film application unit 14 is disposed downstream of the delivery roll 12 and upstream of the exposure unit 18. The alignment film application unit 14 is disposed above the conveyance path of the film 90 to be conveyed. The alignment film application unit 14 supplies and applies a liquid alignment film 120, which is an example of an exposure material, to the upper surface of the film 90.

  The alignment film drying unit 16 is disposed on the downstream side of the alignment film application unit 14. The alignment film drying unit 16 dries the alignment film 120 applied on the film 90 passing through the inside by heating, light irradiation, or air blowing.

  The exposure unit 18 is disposed on the downstream side of the alignment film drying unit 16. The exposure unit 18 includes an upstream air discharge unit 32, a polarized light source 34, a mask 38, a mask holding unit 40, a downstream air discharge unit 42, a pair of upstream tension rolls 44 and a downstream tension roll 46. Have The exposure unit 18 orients the alignment film 120 by irradiating the alignment film 120 applied on the film 90 with the polarized light output from the polarized light source 34 through the mask 38. Thereby, the exposure unit 18 exposes the pattern to the alignment film 120 of the film 90. An example of polarized light output from the polarized light source 34 is ultraviolet light. Below the polarized light source 34 is an example of a predetermined exposure region 80 where the film 90 is exposed.

  The liquid crystal film application unit 20 is disposed on the downstream side of the exposure unit 18. The liquid crystal film application unit 20 is disposed above the transport path of the film 90. The liquid crystal film application unit 20 supplies and applies the liquid crystal film 122 onto the alignment film 120 formed on the film 90.

  The liquid crystal film alignment unit 22 is disposed on the downstream side of the liquid crystal film application unit 20. The liquid crystal film alignment unit 22 dries the liquid crystal film 122 formed on the alignment film 120 that passes through the liquid crystal film alignment section 120 along the alignment direction of the alignment film 120 by heating, light irradiation, or air blowing. .

  The liquid crystal film curing unit 24 is disposed on the downstream side of the liquid crystal film alignment unit 22. The liquid crystal film curing unit 24 cures the liquid crystal film 122 by irradiating ultraviolet rays. Thereby, the alignment of the molecules of the liquid crystal film 122 aligned along the alignment of the alignment film 120 is fixed.

  The separate film supply unit 26 is disposed between the liquid crystal film curing unit 24 and the take-up roll 28. The separate film supply unit 26 supplies and separates the separate film 92 onto the liquid crystal film 122 of the film 90. Note that the separate film supply unit 26 may be omitted.

  The take-up roll 28 is disposed on the downstream side of the liquid crystal film curing unit 24 and on the most downstream side of the transport path. The take-up roll 28 is supported so as to be rotatable. The winding roll 28 winds the film 90 on which the alignment film 120 and the liquid crystal film 122 are formed and patterned.

  FIG. 4 is an overall perspective view of the exposure unit. The exposure unit 18 is an example of an exposure apparatus. As shown in FIG. 4, the upstream air discharge unit 32 is disposed downstream of the alignment film drying unit 16 and upstream of the upstream tension roll 44. The upstream air discharge unit 32 is disposed above the transport path of the film 90. The upstream air discharge part 32 discharges air to the film 90 conveyed below. As a result, the film 90 being conveyed is pressed downward.

  The polarized light source 34 is disposed above the transport path of the film 90. The polarized light source 34 includes an upstream side polarization output unit 50 and a downstream side polarization output unit 52. The bottom surface of the upstream side polarization output unit 50 functions as an upstream side polarization output surface 51 that outputs the first polarized light. The bottom surface of the downstream polarization output unit 52 functions as a downstream polarization output surface 53 that outputs the second polarized light. The upstream polarization output surface 51 and the downstream polarization output surface 53 are disposed between the upstream tension roll 44 and the downstream tension roll 46.

  The upstream side polarization output unit 50 is an example of a first polarization output unit, and outputs the first polarized light downward. The downstream side polarization output unit 52 is disposed on the downstream side of the upstream side polarization output unit 50, which is a position different from the upstream side polarization output unit 50 in the longitudinal direction of the film 90.

  The downstream side polarization output unit 52 is an example of a second polarization output unit. The downstream polarization output unit 52 outputs the second polarization having a polarization direction different from the polarization direction of the first polarization output from the upstream polarization output unit 50 downward. The polarization direction of the second polarization output from the downstream polarization output unit 52 and the polarization direction of the first polarization output from the upstream polarization output unit 50 are orthogonal to each other. The polarization direction of the second polarization output from the downstream polarization output unit 52 and the polarization direction of the first polarization output from the upstream polarization output unit 50 may intersect at an arbitrary angle. When the upstream side polarization output unit 50 and the downstream side polarization output unit 52 are an integrated light source, a light shielding wall that shields the polarization of each other may be provided.

  The mask 38 transmits part of the polarized light output from the polarized light source 34 and shields the rest. Thereby, the film 90 is exposed to a predetermined pattern. The mask 38 is disposed between the polarized light source 34 and the film 90. As an example, the mask 38 is disposed several hundred μm above the film 90. The mask 38 includes a mask base material 56 and a light shielding layer 58. In the light shielding layer 58, an opening functioning as the upstream transmission region 62 and an opening functioning as the downstream transmission region 66 are formed.

  The mask holding unit 40 is held so as to be movable relative to the film 90 in the width direction. The mask holding unit 40 holds the mask 38. Thereby, the mask 38 can move with the mask holding | maintenance part 40 with a motor or an actuator.

  The downstream air discharge unit 42 is disposed on the downstream side of the downstream tension roll 46. The downstream air discharge unit 42 is disposed above the transport path of the film 90. The downstream air discharge unit 42 discharges air to the film 90 being conveyed below. As a result, the film 90 being conveyed is pressed downward.

  The upstream tension roll 44 is disposed upstream of the polarized light source 34 and the mask 38 and downstream of the upstream air discharge unit 32. The downstream tension roll 46 is disposed downstream of the polarized light source 34 and the mask 38 and upstream of the downstream air ejection unit 42. The upstream tension roll 44 and the downstream tension roll 46 are rotatably supported. The upstream tension roll 44 and the downstream tension roll 46 may be configured to be rotatable by a drive motor or the like, or may be configured to be driven by a driving force of the take-up roll 28 or the like.

  The upstream tension roll 44 and the downstream tension roll 46 are disposed below the transport path. Thereby, the upstream tension roll 44 and the downstream tension roll 46 come into contact with and press against the lower surface of the film 90 where the alignment film 120 is not formed. As described above, the film 90 is pressed downward by the upstream air discharge part 32 and the downstream air discharge part 42. Therefore, the upstream tension roll 44 and the downstream tension roll 46 give a longitudinal tension to the film 90 pressed downward. As an example, the tension applied to the film 90 is preferably about 50 N when the width is 350 mm.

  The upstream tension roll 44 and the downstream tension roll 46 are arranged with the exposure region 80 interposed therebetween. The upstream tension roll 44 is disposed on the upstream side of the upstream end portion of the upstream transmission region 62, and the downstream tension roll 46 is disposed on the downstream side of the downstream end portion of the downstream transmission region 66. Yes. As a result, the first polarized light and the second polarized light output from the upstream polarization output unit 50 and the downstream polarization output unit 52 are transmitted by the film 90 and then reflected by the upstream tension roll 44 and the downstream tension roll 46. Exposure of the film 90 is reduced. The distance between the upstream tension roll 44 and the downstream tension roll 46 can be shorter than the length in the longitudinal direction of the retardation plate 100 of several cm or more provided in a general liquid crystal display device. Thereby, the tension | tensile_strength of a longitudinal direction can fully be provided to the film 90 between the upstream tension | tensile_strength roll 44 and the downstream tension | tensile_strength roll 46. FIG.

  FIG. 5 is a bottom view of the mask. 6 is a longitudinal sectional view taken along line VI-VI in FIG. An arrow shown in the transmission region in FIG. 5 is an example of a polarization direction of polarized light transmitted through the transmission region. As shown in FIGS. 5 and 6, the mask base material 56 of the mask 38 is formed in a rectangular plate shape. The mask base material 56 is made of a material such as quartz glass. An example of the length of the mask base material 56 in the longitudinal direction of the film 90 is about 300 mm. The light shielding layer 58 is formed on the lower surface of the mask base material 56. The light shielding layer 58 is made of a material capable of shielding light such as chromium. As described above, the light shielding layer 58 has openings functioning as the upstream transmission region 62 and the downstream transmission region 66.

  An example of the length in the longitudinal direction of the upstream transmission region 62 and the downstream transmission region 66 is about 30 mm. That is, the length in the longitudinal direction of the upstream transmission region 62 and the downstream transmission region 66 should be shorter than the length in the longitudinal direction of the retardation plate 100 of several cm or more provided in a general liquid crystal display device. Can do. An example of the length in the width direction of the upstream transmission region 62 and the downstream transmission region 66 is about 100 μm.

  The upstream transmission region 62 is arranged along the width direction. The upstream transmission region 62 transmits light including the first polarized light. The upstream transmission region 62 is disposed between the upstream polarization output unit 50 and the film 90. As a result, the first polarized light output from the upstream polarization output unit 50 passes through the upstream transmission region 62 and exposes the film 90.

  The downstream transmission region 66 is arranged along the width direction. The downstream transmission region 66 is disposed on the downstream side of the upstream transmission region 62. The downstream transmission region 66 transmits light including the second polarized light. The downstream transmission region 66 is disposed between the downstream polarization output unit 52 and the film 90. As a result, the second polarized light output from the downstream polarization output unit 52 is transmitted through the downstream transmission region 66 to expose the film 90.

  The upstream transmission region 62 and the downstream transmission region 66 are arranged in different positions in the longitudinal direction so as not to overlap each other. The downstream transmission region 66 is formed at a position different from the upstream transmission region 62 in the width direction.

  The upstream transmission region 62 and the downstream transmission region 66 are arranged at different positions where the positions do not overlap each other in the width direction intersecting the longitudinal direction. Thereby, the area exposed by the upstream transmission area 62 and the area exposed by the downstream transmission area 66 are formed on the film 90 at different positions without overlapping. In other words, any side of the downstream transmission region 66 parallel to the longitudinal direction is located on the extension line of the side of the upstream transmission region 62 parallel to the longitudinal direction. Thereby, the film 90 is exposed in a state where there is no gap between the region exposed by the upstream transmission region 62 and the region exposed by the downstream transmission region 66.

  A region that can be exposed by the first polarized light output from the upstream polarization output unit 50 is a first exposure region 81. A region that can be exposed by the second polarized light output from the downstream polarization output unit 52 is a second exposure region 82. The upstream transmission region 62 may be configured by a polarizing plate that can transmit only the first polarized light. Further, the downstream transmission region 66 may be configured by a polarizing plate that can transmit only the second polarized light. Thereby, while suppressing the 1st polarization | polarized-light which permeate | transmits the downstream transmission region 66, the 2nd polarization | polarized-light which permeate | transmits the upstream transmission region 62 can be suppressed.

  FIG. 7 is a perspective view of the upstream tension roll and the downstream tension roll. The upstream tension roll 44 and the downstream tension roll 46 are formed in a cylindrical shape. The roundness of the upstream tension roll 44 and the downstream tension roll 46 is preferably higher. Further, when the upstream tension roll 44 and the downstream tension roll 46 are formed in a cylindrical shape, it is preferable that the cylindricity is higher. Furthermore, the rotation axis of the upstream tension roll 44 and the rotation axis of the downstream tension roll 46 need to be accurately parallel to each other. As a result, the shaking of the upstream tension roll 44 and the downstream tension roll 46 during rotation can be reduced, and fluttering of the film 90 being conveyed can be reduced.

  Next, the manufacturing method of the phase difference plate 100 which is an example of the manufacturing method of a film-form product is demonstrated. First, a long film 90 wound around the feed roll 12 is prepared. Here, an example of the total length of the film 90 is about 1000 m. An example of the width of the film 90 is about 1 m. Thereafter, one end of the film 90 is fixed to the take-up roll 28. In this state, the film 90 is disposed through the upper surfaces of the upstream tension roll 44 and the downstream tension roll 46.

  Next, rotation of the take-up roll 28 is started. As a result, the film 90 is delivered from the delivery roll 12, and the film 90 is conveyed in the longitudinal direction. An example of the conveyance speed of the film 90 is 2 m / min to 10 m / min.

  The fed film 90 passes under the alignment film application unit 14. Thereby, the alignment film 120 is applied to the upper surface of the film 90 by the alignment film application part 14 over substantially the entire width direction excluding both ends. The application of the alignment film 120 is continuously performed while the film 90 is conveyed. Therefore, the alignment film 120 is continuously applied to the upper surface of the film 90 over the entire length in the length direction except for a part of both ends.

  The film 90 coated with the alignment film 120 is transported and passes through the alignment film drying unit 16. Thereby, the alignment film 120 applied to the upper surface of the film 90 is dried. Thereafter, the film 90 passes under the upstream air discharge part 32 and the upper surface of the upstream tension roll 44.

  The film 90 in the region where the alignment film 120 is applied passes below the upstream transmission region 62. Thereby, the alignment film 120 of the film 90 formed in the region passing under the upstream transmission region 62 is output from the upstream polarization output unit 50 and transmitted through the upstream transmission region 62 of the mask 38. To be exposed. Here, the film 90 is exposed while being continuously conveyed at a constant speed by the take-up roll 28. Therefore, the alignment film 120 passing under the upstream transmission region 62 is exposed to the first polarized light output from the upstream polarization output unit 50 continuously along the longitudinal direction. Thereby, the alignment film 120 in the region that has passed under the upstream transmission region 62 is exposed in a strip shape extending in the longitudinal direction. As a result, the film 90 is exposed without a break, being longer than the length in the longitudinal direction of the exposure region 80 of the polarized light source 34 of the exposure unit 18. Further, since the alignment film 120 in the region is exposed by the first polarized light output from the upstream polarization output unit 50, the alignment film 120 in the region is aligned corresponding to the first polarized light to be exposed. .

  Thereafter, the film 90 in the region to which the alignment film 120 is applied is conveyed and passes below the downstream transmission region 66. As a result, the second polarized light that is output from the downstream polarization output unit 52 and transmitted through the downstream transmission region 66 of the mask 38 from the alignment film 120 of the film 90 formed in the region passing below the downstream transmission region 66. Is exposed. In addition, since conveyance of the film 90 is continued, the alignment film 120 of the said area | region is also exposed to strip | belt shape. Since the alignment film 120 in the region is exposed by the second polarized light output from the downstream polarization output unit 52, the alignment film 120 in the region is aligned corresponding to the polarized light to be exposed. Here, the polarization direction of the second polarization output from the downstream polarization output unit 52 is orthogonal to the polarization direction of the first polarization output from the upstream polarization output unit 50. Thereby, the alignment film 120 in the region passing below the downstream transmission region 66 and the alignment film 120 in the region passing below the upstream transmission region 62 are aligned in directions orthogonal to each other.

  Further, the upstream transmission region 62 and the downstream transmission region 66 are formed at different positions in the width direction. Thereby, the region of the alignment film 120 exposed by the upstream transmission region 62 and the region of the alignment film 120 exposed by the downstream transmission region 66 are at different positions in the width direction. Therefore, a pattern having two regions including different orientations corresponding to the polarization modulation unit 104 and the polarization modulation unit 106 is formed on the alignment film 120.

  Here, since air is discharged to the film 90 by the upstream air discharge part 32 and the downstream air discharge part 42, the film 90 is pressed downward. Thereby, a longitudinal tension is applied to the film 90 between the upstream tension roll 44 and the downstream tension roll 46. Further, since the upstream tension roll 44 is formed in a columnar shape, the movement of the film 90 in the width direction is small.

  Thereafter, the film 90 on which the alignment film 120 has been exposed passes below the downstream air discharge part 42 and reaches below the liquid crystal film application part 20. Thereby, the liquid crystal film 122 is applied to the upper surface of the alignment film 120. Since the liquid crystal film 122 is continuously applied to the upper surface of the alignment film 120 of the film 90 being conveyed, the liquid crystal film 122 is applied over the entire length of the film 90 in the longitudinal direction. Thereafter, the film 90 coated with the liquid crystal film 122 is conveyed and passes through the liquid crystal film alignment unit 22. As a result, the liquid crystal film 122 is heated by the liquid crystal film alignment unit 22, and the molecules of the liquid crystal film 122 are dried while being aligned along the alignment of the alignment film 120 formed on the lower surface. Next, the film 90 on which the applied liquid crystal film 122 is oriented passes through the liquid crystal film curing unit 24. Thereby, the liquid crystal film 122 is irradiated with ultraviolet rays, and the liquid crystal film 122 is cured in an aligned state. As a result, the molecules of the liquid crystal film 122 are aligned corresponding to the alignment film 120 in the region passing under the upstream transmission region 62 and the alignment film 120 in the region passing under the downstream transmission region 66, respectively. Is done. As shown in FIGS. 1 and 2, the polarization modulators 104 and the polarization modulators 106 formed by the alignment film 120 and the liquid crystal film 122 are alternately formed in the width direction of the film 90. Next, a separate film 92 is supplied to the upper surface of the liquid crystal film 122 and pasted. Then, the film 90 with the separate film 92 attached to the upper surface is taken up by the take-up roll 28.

  Thereafter, the film 90 is conveyed by the take-up roll 28 and the exposure of the film 90 is continued until the supply of the film 90 wound around the feed roll 12 is completed. Then, when all of the film 90 wound around the delivery roll 12 is supplied, the process ends. The film 90 may be continuously exposed by connecting the rear end of the completed film 90 to the front end of the next new film 90. Finally, the film 90 is cut to a predetermined length to complete the retardation plate 100 shown in FIGS.

  As described above, in the phase difference plate manufacturing method and the phase difference plate manufacturing apparatus 10 according to the present embodiment, the film 90 is longer than the length of the exposure region 80 in the longitudinal direction, and the film 90 is exposed without a break. Thereby, in this embodiment, exposure is performed in the exposure region 80 shorter in the longitudinal direction than the retardation plate 100 of several centimeters or more provided in a general liquid crystal display device, and the retardation plate 100 longer than the exposure region 80 is formed. Can be manufactured. As a result, since the polarized light source 34, the mask 38, and the exposure region 80 can be reduced in the longitudinal direction, the retardation plate manufacturing apparatus 10 can be reduced in size.

  In this embodiment, since the film 90 is longer than the length of the exposure region 80 in the longitudinal direction and the film 90 is exposed without a break, the region of the film 90 where the pattern is not exposed can be reduced. In particular, after the exposure of the film 90 is started, the exposure of the film 90 is continued until the supply of the film 90 is completed. Therefore, when the exposure of the film 90 is started, a pattern is formed on the film 90 without a cut. Thereby, the area | region where the pattern is not formed in the film 90 can further be reduced. As a result, the number of retardation plates 100 that can be manufactured from the film 90 can be increased, and the yield can be improved. Further, by forming the pattern continuously, it is possible to delete the control for adjusting the interval between adjacent patterns as in the case of intermittent exposure.

  In this embodiment, the film 90 is continuously exposed while being conveyed. In other words, in the present embodiment, one of the transport time and the exposure time is omitted by simultaneously transporting and exposing the film 90. Thereby, since the time when the film 90 is not conveyed and the time when it is not exposed can be reduced, the manufacturing time of the film 90 can be reduced. Moreover, the time required for acceleration and deceleration of the film 90 can be reduced by reducing the time during which the conveyance of the film 90 is stopped. Furthermore, since the conveyance of the film 90 has only to be maintained at a constant speed, the control of the conveyance of the film 90 can be simplified.

  In the present embodiment, the film 90 is formed by a mask 38 having an upstream transmission region 62 and a downstream transmission region 66 that are extremely short in the longitudinal direction as compared to the retardation plate 100 of several centimeters or more provided in a general liquid crystal display device. Is exposed. Accordingly, the light output from the upstream side polarization output unit 50 and the downstream side polarization output unit 52 is concentrated and exposed in a small area, so that the film 90 can be exposed in a short time. Thereby, this embodiment can further reduce manufacturing time. Moreover, since the output of the upstream side polarization output part 50 and the downstream side polarization output part 52 can be made small, equipment cost can be reduced.

  In this embodiment, the pattern is exposed continuously in the longitudinal direction of the film 90. As a result, even if foreign matter adheres to a part of the upstream transmission region 62 or the downstream transmission region 66 of the mask 38, the region is the same position in the width direction and does not have foreign matters attached in different positions in the longitudinal direction. The area of the film 90 is exposed by the polarized light that has passed through the upstream transmission area 62 or the downstream transmission area 66 of the film 90. Thereby, even if it is an area | region to which the foreign material adhered, since the area | region of the film 90 which passes under the foreign material is exposed, the influence of a foreign material can be reduced and a yield can be improved. For example, when a foreign matter having a length of 1 mm adheres to the upstream transmission region 62 having a length in the longitudinal direction of 30 mm, the influence of the foreign matter is reduced as compared with the case where the film 90 is stopped and exposed. 30.

  In the present embodiment, since the first exposure area 81, the second exposure area 82, and the mask 38 can be shortened in the longitudinal direction, the distance between the upstream tension roll 44 and the downstream tension roll 46 is shortened. it can. Thereby, the tension | tensile_strength of the longitudinal direction can fully be provided to the film 90 between the upstream tension | tensile_strength roll 44 and the downstream tension | tensile_strength roll 46, and the slack of the film 90 of the said part can be reduced. As a result, the stage for supporting the film 90 between the upstream tension roll 44 and the downstream tension roll 46 can be omitted. Further, the upstream tension roll 44 is disposed on the upstream side of the upstream transmission region 62, and the downstream tension roll 46 is disposed on the downstream side of the downstream transmission region 66. Thereby, it can reduce that the polarized light which was output from the polarized light source 34 and permeate | transmitted the film 90 is reflected by the stage or the upstream tension roll 44 and the downstream tension roll 46. FIG. For this reason, the unnecessary exposure of the film 90 by reflected light can be reduced, and the quality of the phase difference plate 100 can be improved.

  In this embodiment, since the pattern is continuously exposed in the longitudinal direction of the film 90, the longitudinal length of the retardation film 100 of the finished product can be freely changed by changing the cutting position of the film 90. be able to. As a result, the present embodiment can improve the degree of freedom in the longitudinal direction of the phase difference plate 100.

  In the present embodiment, the upstream tension roll 44 and the downstream tension roll 46 are in contact with the lower surface of the film 90 where the alignment film 120 is not applied. Thereby, the alignment defect by the roll contact of the alignment film 120 apply | coated to the film 90 can be avoided. Further, the air discharged from the upstream air discharge unit 32 and the downstream air discharge unit 42 presses the upper surface of the film 90 on which the alignment film 120 is formed, thereby applying tension to the film 90. That is, this embodiment can apply tension to the film 90 without directly contacting the upper surface of the film 90 on which the alignment film 120 is formed.

Next, shortening of the manufacturing time of the retardation plate 100 described above will be specifically described. First, the common conditions of this embodiment and a comparison form are demonstrated. The energy per unit area necessary for exposing the film 90 is 20 mJ / cm ² . The intensity per unit area of the ultraviolet irradiation output from the polarized light source 34 used to expose the film 90 is 120 mW / cm ² . The conveyance speed of the film 90 is 10 m / min. The transport speed here is a transport speed in a state where the film 90 is at a constant speed. The length of the completed retardation plate 100 in the longitudinal direction is 1.1 m.

When this embodiment is implemented under the above-described conditions, the time required for exposing one retardation plate 100 is:
(Length of one retardation plate [m]) / (Conveying speed [m / min]) = 1.1 / 10 = 0.11 [min]
It becomes. In this embodiment, since exposure and conveyance are performed simultaneously, it is only necessary to consider the time required to convey one phase difference plate 100. Therefore, this embodiment exposes one phase difference plate 100. The time required for this is 0.11 minutes, ie 6.6 seconds.

On the other hand, the comparative form is an intermittent exposure method in which exposure and conveyance are executed separately. Therefore, it is necessary to consider separately the time required for conveyance and the time required for exposure. First, the time required for conveyance is 1.0 second for each time required for acceleration and deceleration, and the time for conveying one sheet of the phase difference plate 100,
(Length of retardation plate at constant speed [m]) / (Conveying speed [m / min]) = 0.934 / 10 = 0.0934 [min] = 5.6 [sec]
It is. Therefore, in the comparative embodiment, the time required for the constant speed portion is 5.6 seconds, and further, the time required for acceleration and deceleration is added by 1 second. As a result, the time required for conveyance is 7.6 seconds.

  Next, the time required for exposure in the comparative mode is as follows. First, the time required for adjusting the exposure gap including adjusting the gap between the mask and the film in the vertical direction is 2.0 seconds. Next, the exposure with the first polarized light is 1.2 seconds, which is the sum of 0.5 second of the time for opening the shutter, 0.2 second of the exposure time for the first polarized light, and 0.5 second of the time for closing the shutter. Is required. The time required to move the mask for the first polarization and the mask for the second polarization is 2.0 seconds. The exposure with the second polarized light requires 1.2 seconds similar to the exposure with the first polarized light. From these totals, a time of 6.4 seconds is required for exposure. Therefore, in the comparative embodiment, the time required for exposing one retardation plate 100 is 14 seconds.

  As described above, in the present embodiment, the time required for exposing one retardation plate 100 is 6.6 seconds, and in the comparative embodiment, the time required for exposing one retardation plate 100. Is 14 seconds. As is clear from these, in the present embodiment, 2.1 phase difference plates 100 can be manufactured in the time for manufacturing one phase difference plate 100 according to the comparative form.

  FIG. 8 is a perspective view of a pair of tension rolls according to another embodiment. FIG. 9 is a side view of the upstream tension roll. As shown in FIGS. 8 and 9, the upstream tension roll 144 is a concave roll having a recess formed in the center in the width direction. For example, the radius of the end portion of the upstream tension roll 144 is about 100 μm larger than the radius of the central portion of the upstream tension roll 144. An example of such an upstream tension roll 144 is that the end has a diameter of 120.2 mm and the center has a diameter of 120 mm. Accordingly, the peripheral speed in the vicinity of both ends of the upstream tension roll 144 is faster than the peripheral speed in the vicinity of the central portion of the upstream tension roll 144. Therefore, both ends of the film 90 are pulled outward by both ends of the upstream tension roll 144 in the width direction. As a result, the film 90 passes under the polarized light source 34 and the mask 38 in a state in which the slackness in the width direction is reduced, so that distortion or the like of the exposed pattern can be reduced.

  Alternatively, a cylindrical roll may be applied to the upstream tension roll 144 and a concave roll may be applied to the downstream tension roll 46. Further, a concave roll may be applied to the upstream tension roll 144 and the downstream tension roll 46. In addition, when applying a concave roll to any one of the upstream tension roll 144 and the downstream tension roll 46, it is preferable to apply the concave roll to the upstream tension roll 144. This is because the film 90 can be conveyed below the mask 38 in a state in which the slackness in the width direction is reduced.

  FIG. 10 is a bottom view of a mask according to another embodiment. The arrows shown in the transmission regions in FIG. 10 are examples of the polarization direction of polarized light that passes through each transmission region. As shown in FIG. 10, in the present embodiment, the mask 138 includes a mask base material 156 that transmits light, and a light shielding layer 158 formed on the mask base material 156. In the light shielding layer 158, an opening that functions as a first transmission region 162 that transmits the first polarized light and a second transmission region 166 that transmits the second polarized light having a polarization direction intersecting the first polarization is formed. The first transmission region 162 and the second transmission region 166 are arranged at the same position in the longitudinal direction and the transport direction. In other words, the first transmission region 162 and the second transmission region 166 are arranged in a line along the width direction.

  In the present embodiment, the polarization light source 134 includes a first polarization output unit 152 that outputs the first polarization, and a second polarization output unit 154 that outputs the second polarization. The first polarization output unit 152 includes a polarization light source that outputs the first polarization, and the second polarization output unit 154 includes a polarization light source that outputs the second polarization. A common light source that outputs light that is not polarized light is provided, and a polarizing plate having a transmission axis parallel to the polarization direction of the first polarized light on the output surfaces of the first polarized light output unit 152 and the second polarized light output unit 154, and A polarizing plate having a transmission axis parallel to the polarization direction of the second polarized light may be provided. The first polarization output unit 152 and the second polarization output unit 154 are disposed at the same position in the longitudinal direction and the transport direction. In other words, the first polarization output unit 152 and the second polarization output unit 154 are arranged in a line along the width direction. The first polarization output unit 152 and the second polarization output unit 154 are disposed above the first transmission region 162 and the second transmission region 166, respectively.

  FIG. 11 is a bottom view of a mask according to another embodiment. The arrows shown in the transmission regions in FIG. 11 are examples of the polarization direction of polarized light that passes through each transmission region. As shown in FIG. 11, the mask 238 of the present embodiment includes a mask base material 256 and a light shielding layer 258 formed on the lower surface of the mask base material 256. In the light shielding layer 258, openings functioning as the upstream transmission region 262 and the downstream transmission region 266 are formed. In the mask 238, an interval A is provided between the upstream transmission region 262 and the downstream transmission region 266 in the width direction.

  In the retardation plate exposed by the mask 238, random alignment portions are formed by the light shielding layer 258 formed at the interval A of the mask 238. The random alignment portion is a region where the alignment film 120 and the liquid crystal film 122 are not aligned because they are not exposed. The random orientation portion is formed between the polarization modulation portion 104 and the polarization modulation portion 106 in FIG. 1 corresponding to the gap A of the mask 238.

  FIG. 12 is a bottom view of a mask according to another embodiment. As shown in FIG. 12, the mask 338 of this embodiment includes a mask base material 356 and a light shielding layer 358 formed on the lower surface of the mask base material 356. In the light shielding layer 358, openings functioning as an upstream transmission region 362 and a downstream transmission region 366 are formed. In the mask 338, an overlapping region B is formed in which the upstream transmission region 362 and the downstream transmission region 366 overlap in the width direction. Accordingly, a part of the film 90 is exposed by both the first polarized light that passes through the upstream transmission region 362 and the second polarized light that passes through the downstream transmission region 366. As a result, a phase difference plate in which regions having different orientations are formed between the polarization modulation unit 104 and the polarization modulation unit 106 in FIG. 1 corresponding to the overlapping region B of the mask base material 356 is manufactured.

  FIG. 13 is a bottom view of a mask according to another embodiment. As shown in FIG. 13, in the mask 438 of this embodiment, the mask base material has an upstream mask base material 456 and a downstream mask base material 556 that is a separate member from the upstream mask base material 456. An upstream light shielding layer 458 is formed on the lower surface of the upstream mask base 456. In the upstream light shielding layer 458, a plurality of openings functioning as the upstream transmission region 462 are formed. A downstream light shielding layer 558 is formed on the lower surface of the downstream mask substrate 556. In the downstream light shielding layer 558, a plurality of openings functioning as the downstream transmission region 566 are formed.

  FIG. 14 is a bottom view of a mask according to another embodiment. As illustrated in FIG. 14, the mask 638 of this embodiment includes a mask base material 656 and a light shielding layer 658 formed on the lower surface of the mask base material 656. An opening functioning as a transmission region 662 is formed in the light shielding layer 658. The transmission region 662 is formed in a rectangular shape extending in the width direction intersecting with the longitudinal direction of the film 90. In the present embodiment, a polarization output unit 634 that outputs polarized light is provided. The transmission region 662 of the mask 638 is disposed between the polarization output unit 634 and the film 90 and has a transmission region that transmits the polarized light output from the polarization output unit 634. Accordingly, by exposing the film 90 through the mask 638 while transporting the film 90, the entire surface has an optical axis in the same direction, and transmits a polarizing plate or a retardation plate that transmits polarized light in one direction. Can be manufactured. When exposing a polarizing plate or a retardation plate that has optical axes in the same direction and transmits polarized light in one direction, the entire surface may be exposed without providing a mask.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

  The order of execution of each process such as operations, procedures, steps, and stages in the apparatus, system, program, and method shown in the claims, the description, and the drawings is particularly “before” or “prior to”. It should be noted that the output can be realized in any order unless the output of the previous process is used in the subsequent process. Regarding the operation flow in the claims, the description, and the drawings, even if it is described using “first”, “next”, etc. for convenience, it means that it is essential to carry out in this order. It is not a thing.

  An embodiment in which a part of the above-described embodiment is changed will be described. In the above-described embodiment, the retardation plate 100 is taken as an example of a film manufactured by the method for manufacturing a film-like product, but the present invention may be applied to a method for manufacturing a film-like product other than the retardation plate. Good. For example, the present invention may be applied to a film-like product manufactured using negative and positive photoresists and a manufacturing method thereof.

  The arrangement, shape, and number of the components of the above-described embodiments may be appropriately determined. For example, in the above-described embodiment, the arrangement of the alignment film application unit 14, the alignment film drying unit 16, the liquid crystal film application unit 20, the liquid crystal film alignment unit 22, and the liquid crystal film curing unit 24 may be changed as appropriate. As an example, any or all of the alignment film application unit 14 and the liquid crystal film application unit 20 may be disposed below the film 90. Therefore, the alignment film 120 and the liquid crystal film 122 may be applied to the lower surface of the film 90.

  In the above-described embodiment, the polarization directions of the first polarization and the second polarization are orthogonal to each other, but the relationship between the polarization direction of the first polarization and the polarization direction of the second polarization depends on the design of the retardation plate 100 to be manufactured. It can intersect at any angle. Accordingly, the alignment directions of the regions of the alignment film 120 and the liquid crystal film 122 that are shifted depending on the first polarization and the second polarization need only intersect, and do not necessarily need to be orthogonal.

  In the above-described embodiment, the film 90 is exposed while being transported. However, the transport step for transporting the film 90 and the exposure step for exposing the film 90 may be alternately performed. Here, in one transport step, the film 90 is transported by the length in the longitudinal direction of the exposure region.

  In the above-described embodiment, in order to apply tension to the film 90, the upstream air discharge section 32 and the downstream air discharge section 42 are provided on both sides of the upstream tension roll 44 and the downstream tension roll 46. A roll may be provided instead of the side air discharge part 32 and the downstream air discharge part 42.

  In the above-described embodiment, the polarizing light source 34 and the mask 38 are disposed on the opposite side of the upstream tension roll 44 and the downstream tension roll 46 with the film 90 interposed therebetween, but the upstream tension roll 44, the downstream tension roll 46, The polarized light source 34 and the mask 38 may be disposed on the same side of the film 90. That is, the upstream tension roll 44, the downstream tension roll 46, the polarized light source 34, and the mask 38 may be disposed below or above the film 90. Thereby, it can further reduce that the polarized light output from the polarized light source 34 and transmitted through the film 90 is reflected by the upstream tension roll 44 and the downstream tension roll 46 to expose the film 90.

10 Phase difference plate manufacturing equipment
12 Feeding roll
14 Alignment film application part
16 Alignment film drying section
18 Exposure part
20 Liquid crystal film application part
22 Liquid crystal film alignment part
24 Liquid crystal film curing part
26 Separate film supply section
28 Winding roll
32 Upstream air discharge section
34 Polarized light source
38 mask
40 Mask holder
42 Downstream air outlet
44 Upstream tension roll
46 Downstream tension roll
50 Upstream polarization output section
51 Upstream polarization output surface 52 Downstream polarization output section
53 Downstream polarization output surface 56 Mask base material
58 Shading layer
62 Upstream transmission area
66 Downstream transmission area
80 exposure area
81 First exposure area
82 Second exposure area
90 films
92 Separate film
100 phase difference plate
102 cutting film
104 Polarization modulator
106 Polarization modulator
110 arrow
112 arrows
114 arrows
116 arrow
120 Alignment film
122 Liquid crystal film
134 Polarized light source
138 mask
144 Upstream tension roll
152 1st polarization output part
154 Second polarization output unit
156 Mask base material
158 Light-shielding layer 162 First transmission region
166 Second transmission region
238 mask
256 mask substrate
258 shading layer
262 Upstream transmission area
266 Downstream transmission area
338 Mask 356 Mask base material
358 Shading layer
362 Upstream transmission area
366 Downstream transmission area
438 mask
456 Upstream mask base material
458 upstream light shielding layer
462 Upstream transmission area
556 downstream mask substrate
558 Downstream light shielding layer
566 Downstream transmission area
634 Polarization output section
638 mask
656 Mask base material
658 Light-shielding layer
662 Transmission area

Claims (20)

A transport step for transporting a long film in the longitudinal direction;
Using an exposure apparatus that exposes a predetermined exposure area, and an exposure step of exposing the film,
The manufacturing method of the film-form product which exposes the said film longer than the length of the said longitudinal direction in the said exposure area | region of the said exposure apparatus in the said conveyance step and the said exposure step, without a break. The exposure area includes a first exposure area exposed by first polarized light, and a second exposure area exposed by second polarized light having a polarization direction different from that of the first polarized light,
The method for producing a film-like product according to claim 1, wherein the first exposure region and the second exposure region are arranged at different positions in the longitudinal direction. In the exposure step,
The first polarized light output from the first polarized light output section and transmitted through the mask, and the second polarized light output section disposed at a position different from the first polarized light output section in the longitudinal direction and transmitted through the mask. Exposing the film with the second polarized light;
The mask is
A first transmission region that is disposed between the first polarization output unit and the film and transmits the first polarization;
A second transmission region disposed between the second polarized light output section and the film and transmitting the second polarized light;
The method for producing a film-like product according to claim 2, wherein at least a part of the first transmission region and the second transmission region are arranged at different positions in the width direction intersecting the longitudinal direction. In the exposure step,
Exposing the film with polarized light output from a polarization output unit and transmitted through a mask,
The method for producing a film-like product according to claim 1, wherein the mask extends in a width direction intersecting the longitudinal direction, is disposed between the polarization output unit and the film, and has a transmission region that transmits the polarized light. . The said exposure step WHEREIN: Manufacture of the film-form product of any one of Claims 1-4 supported by the tension | tensile_strength given by a pair of tension | tensile_strength roll arrange | positioned on both sides of the said exposure area | region. Method. The method for producing a film-like product according to claim 5, wherein at least one of the pair of tension rolls is a concave roll having a concave portion formed at a central portion in a width direction intersecting the longitudinal direction. The manufacturing method of the film-form product of Claim 6 whose tension roll of the upstream of a conveyance direction is the said concave roll among a pair of said tension rolls. The manufacturing method of the film-form product of any one of Claims 1-7 in which the said film is exposed in the said exposure step, conveying the said film by the said conveyance step. The exposure step and the transport step are performed alternately,
The manufacturing method of the film-form product of any one of Claims 1-7 which conveys the said film below the length of the longitudinal direction of the said exposure area | region in the said conveyance step. A transport unit for transporting a long film in the longitudinal direction;
An exposure unit that exposes the film in a predetermined exposure region,
An apparatus for producing a film-like product, which is longer than the length in the longitudinal direction in the exposure region and exposes the film without a break. The exposure unit includes a first polarization output unit that outputs a first polarization, and a second polarization output unit that outputs a second polarization having a polarization direction different from the polarization direction of the first polarization,
The said 1st polarization | polarized-light output part and the said 2nd polarization | polarized-light output part are the manufacturing apparatuses of the film-form product of Claim 10 arrange | positioned in a different position in a longitudinal direction. The exposure unit has a mask,
The mask is
A first transmission region that is disposed between the first polarization output unit and the film and transmits the first polarization;
A second transmission region disposed between the second polarized light output section and the film and transmitting the second polarized light;
The apparatus for producing a film-like product according to claim 11, wherein at least a part of the first transmission region and the second transmission region are arranged at different positions in the width direction intersecting the longitudinal direction. The exposure unit has a polarization output unit that outputs polarized light, and a mask that transmits the polarized light,
The said mask extends in the width direction which cross | intersects the said longitudinal direction, is arrange | positioned between the said polarization output part and the said film, and has a transmissive area | region which permeate | transmits the said polarized light, The manufacturing apparatus of the film-form product of Claim 10 . The said exposure part is arrange | positioned on both sides of the said exposure area | region, and has a pair of tension | tensile_strength roll which provides tension | tensile_strength to the said film, The manufacturing apparatus of the film-form product of any one of Claims 10-13. The apparatus for producing a film-like product according to claim 14, wherein the upstream-side tension roll among the pair of tension rolls is a concave roll having a concave portion formed in a central portion in a width direction intersecting the longitudinal direction. It is arranged on the upstream side in the transport direction from the exposure part, further comprising an application part for applying an exposure material to the film,
The said pair of tension | tensile_strength roll is a manufacturing apparatus of the film-form product of Claim 14 or 15 which presses the surface where the said exposure material is not apply | coated among the surfaces of the said film. The manufacturing apparatus of the film-form product of any one of Claims 10-16 in which the said film is exposed by the said exposure part, while the conveyance of the said film by the said conveyance part is continued. A mask for exposing the film with the first polarized light and the second polarized light from the polarization output unit while conveying the long film in the longitudinal direction,
A first transmission region that transmits the first polarized light;
A second transmission region that transmits the first polarized light and the second polarized light whose polarization directions intersect,
The first transmissive region and the second transmissive region are masks arranged at different positions in the width direction at least partially intersecting the longitudinal direction. The mask according to claim 18, wherein the first transmission region and the second transmission region are arranged at different positions in the longitudinal direction of the film. A mask for exposing the film with polarized light from a polarization output unit while conveying a long film in the longitudinal direction,
A mask having a transmission region that extends in a width direction intersecting with the longitudinal direction, is disposed between the polarization output portion and the film, and transmits the polarized light.

Images