JP2017195099A - Optical member and manufacturing method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical member which is bonded to an object more quickly.SOLUTION: An optical member 1 includes: a light control layer 12 including a light entry surface from which light enters and a light emission surface from which the light is emitted, the light control layer 12 configured to emit the light from the light emission surface while guiding the light entering from the light entry surface in a light guide direction; an adhesive layer 31 laminated on the light emission surface and having a flat surface 31a on a surface layer opposite to the light emission surface; and a peeling sheet 32 laminated on the flat surface 31a of the adhesive layer 31.SELECTED DRAWING: Figure 7

Description

  The present invention relates to an optical member and a method for manufacturing the optical member.

  2. Description of the Related Art Conventionally, an optical member that emits light in a planar shape using refraction and reflection of a fine surface pattern is known. As a method for mass-producing an optical member having such a fine surface pattern, a technique using a roll-shaped die (roll plate) having unevenness on the surface corresponding to the surface pattern of the optical member has been proposed (for example, a patent) Reference 1).

JP 2008-296466 A

  The optical member described above is attached to an electronic device (hereinafter also referred to as “object”) as a light guide plate, for example. The optical member to be attached to the object is transported to the electronic device manufacturer in a state in which the protective film is attached on the surface pattern after being manufactured and wound in a roll shape or in a large-sized sheet with multiple faces. The optical member is subjected to processing such as cutting and punching by the manufacturer of the electronic device, and is separated into a single optical member. And after the protective film is peeled off and the adhesive layer is formed on the surface pattern, the separated optical member is attached to the object.

  The subject of this invention is providing the manufacturing method of the optical member which can be rapidly affixed with a target object, and an optical member.

The present invention solves the problems by the following means. In addition, in order to make an understanding easy, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this. In addition, the configuration described with reference numerals may be improved as appropriate, or at least a part thereof may be replaced with another configuration.
-1st invention is equipped with the light-incidence surface into which light injects, and the light-exiting surface from which light radiate | emits, and guides the light incident from the said light-incidence surface to a light guide direction, and the light control layer (emission from the said light-emitting surface) ( 12), an adhesive layer (31) laminated on the light exit surface and having a flat surface on the surface layer opposite to the light exit surface, and a release sheet (32) laminated on the flat surface of the adhesive layer. It is an optical member (10) provided.
In the second invention, a light guide plate sheet manufacturing step for manufacturing a light guide plate sheet having a multi-sided light guide plate having a light incident surface on which light is incident and a light output surface from which light is emitted, and an adhesive layer is formed on one side An adhesive member and a release sheet laminating step for laminating the release sheet and the light guide plate sheet to each other by a roll-to-roll method.
-3rd invention is the light-guide plate sheet | seat preparation process which produces the light-guide plate sheet | seat in which the light-guide plate which has the light-incidence surface into which light injects, and the light exit surface in which light radiate | emits was multifaceted, and the said light emission of the said light-guide plate sheet | seat A pressure-sensitive adhesive layer laminating step for laminating a pressure-sensitive adhesive layer on the surface and forming a flat surface on the surface layer opposite to the light exit surface; and a release sheet laminating step for laminating a release sheet on the flat surface of the pressure-sensitive adhesive layer. It is a manufacturing method of an optical member.
-4th invention is the manufacturing method of 2nd or 3rd invention, Comprising: The said light-guide plate sheet production process produces the shaping sheet by which the uneven | corrugated pattern corresponding to the surface pattern of the said light-guide plate was multifaceted. And a surface for producing a long light guide plate sheet in which a plurality of light guide plates on which the surface pattern of the mold sheet is formed is arranged on the light exit surface, using the mold forming sheet It is a manufacturing method of the optical member characterized by including a pattern shaping process.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the optical member which can be rapidly affixed with a target object, and an optical member can be provided.

2 is a diagram illustrating a configuration of a light guide plate 10. FIG. 2 is a perspective view schematically showing the appearance of a roll plate 20. FIG. It is a figure explaining the structure of the stamper plate. It is a perspective view which shows notionally the form of the shaping sheet. It is a figure explaining the preparation process of the shaping sheet 40 using the roll plate. It is a figure explaining the preparation process of the light-guide plate 10 using the shaping sheet. It is a figure explaining the process of producing the light-guide plate laminated sheet 11a, and the structure of the light-guide plate laminated sheet 11a. It is a figure explaining the electronic paper 100 which affixed the light-guide plate.

(Outline of light guide plate)
First, the light guide plate 10 will be described. The light guide plate 10 is an optical member manufactured using a roll plate 20 including a stamper plate 22 described later.
In the present embodiment, a light guide plate will be described as an example of the optical member. All optical products to be controlled are targeted.

FIG. 1 is a diagram illustrating the configuration of the light guide plate 10. FIG. 1A is a plan view of the light guide plate 10. FIG. 1B is a cross-sectional view taken along arrow Ia-Ia shown in FIG.
In the present embodiment, a long sheet with multiple light guide plates is referred to as a “light guide plate sheet”, and a laminate including the light guide plate sheet and the adhesive sheet is referred to as a “light guide plate laminate sheet”. In addition, the “light guide plate” is not limited to the form constituted by the light control layer, but includes a form in which the adhesive sheet is laminated on the light control layer and a form in which the release sheet is peeled off from the adhesive sheet.

  The light guide plate 10 includes a light control layer 12. The light control layer 12 is a layer having optical transparency. As shown in FIGS. 1A and 1B, the light control layer 12 includes a light incident surface 12a on which light is incident and a light output surface 12b from which light is emitted. Although FIG. 1A shows an example in which the left side surface in the longitudinal direction of the light control layer 12 is the light incident surface 12a, the light incident surface 12a may be any side surface. Moreover, the uneven | corrugated | grooved part (surface pattern) 13 is formed in the light emission surface 12b.

  In the present embodiment, the concavo-convex portion 13 is constituted by minute concavo-convex formed alternately in the longitudinal direction. Specifically, as shown in FIG. 1B, the concavo-convex portion 13 is composed of convex portions 13 a having a rectangular cross section and concave portions 13 b having a rectangular cross section that are alternately formed in the longitudinal direction of the light control layer 12. Is done. In the concavo-convex portion 13, this cross-sectional shape is formed along the width direction of the light control layer 12. The unevenness constituting the uneven portion 13 is finely formed. As an example, the depth of the recess 13b is about 0.1 μm or more and 3.0 μm or less. The bottom width of the recess 13b and the top width of the projection 13a are about 1 μm or more and 30 μm or less.

  In addition, the shape of the uneven | corrugated | grooved part 13 is not restricted to this embodiment, Another form may be applied and a several aspect may be combined and used. Examples of the uneven portions of other forms include, for example, a form having a predetermined cross section and extending obliquely with respect to the width direction of the light control layer, a form in which a plurality of conical convex parts are arranged vertically and horizontally in a plan view, etc. Is mentioned.

  The light control layer 12 is made of, for example, polymer resin having an alicyclic structure, methacrylic resin, polycarbonate, polystyrene, acrylonitrile-styrene copolymer, methyl methacrylate-styrene copolymer, ABS resin, polyethersulfone, or the like. In addition to the plastic resin, it can be formed from an epoxy acrylate, urethane acrylate-based reactive resin, or the like. These are widely used as materials for optical sheets such as light guide plates, and have excellent mechanical properties, optical properties, stability, workability, and the like, and are available at low cost.

(Composition of roll version)
Next, the roll plate 20 used when forming the light guide plate 10 will be described. FIG. 2 is a perspective view schematically showing the appearance of the roll plate 20. FIG. 3 is a diagram for explaining the configuration of the stamper plate 22. FIG. 3A is a plan view of the stamper plate 22 provided in the roll plate 20. FIG. 3B is an enlarged view of a portion indicated by IIa in FIG.

  As shown in FIG. 2, the roll plate 20 includes a cylinder 21 and a stamper plate 22. The cylinder 21 includes a cylindrical cylinder body 21a and a rotation shaft 21b. The rotation shaft 21b is a shaft protruding along the axis from the end surface of the cylinder body 21a. The cylinder 21 can rotate around the rotation shaft 21b.

  The cylinder body 21a is a portion around which the stamper plate 22 is wound. Since it is necessary to ensure rigidity, the cylinder body 21a is preferably made of a ferrous material for machine structure. In addition, the cylinder body 21a may have a cylindrical shape having bottom surfaces on both sides in the longitudinal direction from the viewpoint of weight reduction while ensuring necessary rigidity. Further, the cylinder body 21a is provided with a circulating mechanism (not shown) for cold water, hot water, steam or high-temperature oil in the cylinder body so that the surface temperature can be adjusted.

  The stamper plate 22 is a sheet-like mold (resin replica plate) that can shape the shape of the uneven portion 13 of the light guide plate 10. As shown in FIG. 3A, the stamper plate 22 has a plurality of unit mold portions 22a arranged vertically and horizontally on the surface thereof. In the stamper plate 22, the unit mold portions 22a are arranged seamlessly.

  In FIGS. 3A and 3B, the boundary between the adjacent unit mold parts 22a is represented by a dotted line, but this is shown for easy understanding of the arrangement of the unit mold parts 22a. It is not a typical seam. Further, the stamper plate 22 may be a single sheet or a combination of three or more sheets. The number of sheets constituting the stamper plate 22 is appropriately selected depending on the size of one stamper plate, the outer peripheral length of the cylinder 21 to be wound, and the like.

  Such a stamper plate 22 can be produced by, for example, an electroforming plate. Although illustration is omitted, the electroforming plate is constituted by a laminate in which an electrolytic nickel plating layer is formed on a conductive layer. In the electroforming plate, an uneven pattern corresponding to the uneven portion 13 of the light guide plate 10 is formed on the surface of the conductive layer. Moreover, although the electroplating layer and the conductive layer made of nickel have been described here, they may be made of other materials.

  As shown in FIG. 2, the roll plate 20 is obtained by winding and fixing the stamper plate 22 around the outer peripheral surface of the cylinder 21. Since the stamper plate 22 of the present embodiment has no seam, when the roll plate 20 is manufactured, as shown in FIG. 2, the butted portion 23 where the end portions are brought together becomes the only seam.

(Production process of light guide plate)
Next, a process of manufacturing the light guide plate 10 will be described with reference to FIGS.
In this embodiment, prior to manufacturing the light guide plate 10 by the extrusion method, the shaping sheet 40 capable of shaping the shape of the uneven portion 13 is produced.

(Molding sheet production process)
FIG. 4 is a perspective view conceptually showing the form of the shaping sheet 40.
The shaping sheet 40 is a belt-like sheet that can shape the shape of the uneven portion 13 of the light guide plate 10. The shaping sheet 40 includes a base material 41 having translucency and a mold part 42 laminated on one surface of the base material 41. In the mold part 42, a plurality of unit mold parts 42a are arranged vertically and horizontally. The unit mold part 42 a is a part that forms one uneven part 13 of the light guide plate 10.

The shaping sheet 40 is produced as follows.
FIG. 5 is a diagram for explaining a process for producing the shaping sheet 40 using the roll plate 20.
As shown in FIG. 5, the base material 41 is sent out from the direction of the arrow IX between the prepared roll plate 20 and the mold nip roll 45. Then, an uncured ultraviolet curable resin 420 is supplied from the nozzle 46 onto the substrate 41. Thereby, the uncured ultraviolet curable resin 420 is filled between the base material 41 and the roll plate 20. Then, the uncured ultraviolet curable resin 420 is filled in the unevenness formed on the stamper plate 22 of the roll plate 20. In this state, the ultraviolet curable resin 420 is irradiated with ultraviolet rays from the ultraviolet irradiation device 47. As a result, the ultraviolet curable resin 420 is cured to form the mold part 42. Thereafter, the shaping sheet 40 is peeled off from the roll plate 20 by the peeling roll 48. The shaping sheet 40 peeled off from the roll plate 20 is wound into a roll shape.

(Surface pattern molding process)
Next, a method for obtaining the light guide plate 10 by the extrusion method using the shaping sheet 40 will be described.
FIG. 6 is a diagram for explaining a manufacturing process of the light guide plate 10 using the shaping sheet 40.
As shown in FIG. 6, the shaping sheet 40 is sequentially sent out from the direction of the arrow IIX between the first roll 51 and the second roll 52 arranged with a predetermined gap with respect to the first roll 51. Further, the molten thermoplastic resin composition 55 is caused to flow from the nozzle 56 between the shaping sheet 40 and the second roll 52. Here, the feeding direction of the shaping sheet 40 is the longitudinal direction of the shaping sheet 40 having a strip shape. Moreover, it is preferable to make the thermoplastic resin composition 55 to flow into the strip | belt shape which has a magnitude | size (width | variety) comparable as the width direction magnitude | size of the 2nd roll 52 and the shaping sheet 40. FIG. Thereby, it becomes possible to supply a material uniformly in the width direction of the shaping sheet 40.

  The thermoplastic resin composition 55 is caused to flow between the second roll 52 and the shaping sheet 40 at a predetermined pressure. Thereby, the thermoplastic resin composition 55 is filled in the unevenness formed on the surface of the mold part 42 (see FIG. 4) of the shaping sheet 40, and the second roll 52 and the atmosphere (outside air, working environment of the manufacturing apparatus, etc.) ) Is cured by cooling, and becomes a shape along the unevenness of the shaping sheet 40. The thermoplastic resin composition 55 is shaped by the mold portion 42 of the shaping sheet 40, whereby the uneven portion 13 is formed on the surface of the shaping sheet 40. The thermoplastic resin composition 55 is further cooled through the third roll 53 and the fourth roll 54, and finally the shape is fixed. Thereby, the several light-guide plate 10 can be multifaceted, and the elongate light-guide plate sheet | seat 11 arrange | positioned seamlessly vertically and horizontally can be obtained. Then, the light guide plate sheet 11 and the shaping sheet 40 are separated by the peeling roll 57. Although not shown, the separated light guide plate sheet 11 is wound into a roll.

(Adhesive layer and release sheet lamination process)
Next, the process of laminating the light guide plate sheet 11, the adhesive layer 31, and the release sheet 32 will be described.
FIG. 7 is a diagram for explaining the process of producing the light guide plate laminate sheet 11a and the configuration of the light guide plate laminate sheet 11a. FIG. 7A is a view for explaining an apparatus 60 for producing the light guide plate laminated sheet 11a. FIG. 7B is a partial cross-sectional view of the light guide plate laminate sheet 11a.

  As shown in FIG. 7A, the apparatus 60 includes a first roll 61, a second roll 62, a third roll 63, a fourth roll 64, and a fifth roll 65. The device 60 is a roll-to-roll system device in which the light guide plate sheet 11 and the pressure-sensitive adhesive sheet 30 wound in a roll shape are stacked on each other and wound up in a roll shape as the light guide plate laminated sheet 11a.

  The first roll 61 is a roll in which the light guide plate sheet 11 is wound in a roll shape. As shown in the enlarged region D1 in the drawing, the light guide plate sheet 11 is wound so that the surface on which the light exit surface 12b is formed is on the adhesive sheet 30 (described later) side when pulled out from the first roll 61. ing. The first roll 61 is supported rotatably in the direction of the arrow in the figure. The light guide plate sheet 11 is pulled out from the first roll 61 in conjunction with the rotation of the third roll 63 (described later). A motor, a speed reduction mechanism, and the like are connected to the first roll 61, and the first driving force of the motor causes the first light guide plate 11 to be pulled out. The light guide plate sheet 11 may be sent out from the roll 61.

  The 2nd roll 62 is a roll by which the adhesive sheet 30 was wound by roll shape. The second roll 62 is supported rotatably in the direction of the arrow in the figure. The pressure-sensitive adhesive sheet 30 is pulled out from the second roll 62 in conjunction with the rotation of the third roll 63, and a motor, a speed reduction mechanism, etc. are connected to the second roll 62, and the pressure from the second roll 62 is driven by the driving force of the motor. The sheet 30 may be sent out.

  The adhesive sheet 30 includes an adhesive layer 31 and a release sheet 32 as shown in an enlarged region D2 of FIG. In the second roll 62, the adhesive sheet 30 is wound so that the adhesive layer 31 is on the light guide plate sheet 11 side when pulled out from the second roll 62.

  The adhesive layer 31 is a layer that is laminated on the light exit surface 12 b of the light guide plate sheet 11. The adhesive layer 31 is a layer for attaching the light guide plate 10 to an electronic device (object). As shown in FIG. 7B, the adhesive layer 31 laminated on the light exit surface 12b of the light guide plate sheet 11 has a flat surface 31a on the surface layer opposite to the light exit surface 12b. The adhesive layer 31 can be formed of, for example, an optical adhesive sheet (OCA), a liquid UV curable resin, or the like. In addition, in order that the adhesion layer 31 may diffuse light more widely in the interface of the light emission surface 12b of the light-guide plate 10, and the adhesion layer 31, it is the light transmittance which has a refractive index equivalent to the light-guide plate 10, or lower than the light-guide plate 10. It is desirable to be formed of a material having a high height.

  As shown in FIG. 7B, the release sheet 32 includes a base material 321 and a release layer 322. The base material 321 is a member for holding the release layer 322. The base material 321 is formed of, for example, paper, a resin sheet, or the like. The release layer 322 is a layer formed on one side of the base material 321. The release layer 322 can be formed, for example, by applying a solvent containing a silicon resin and then curing it.

  The 3rd roll 63 is a roll which winds up the light-guide plate lamination sheet 11a produced by laminating | stacking the light-guide plate sheet | seat 11 and the adhesive sheet 30. FIG. The third roll 63 is connected to a motor, a speed reduction mechanism, etc. (not shown). When the third roll 63 is rotated in the direction of the arrow in the figure by the driving force of the motor, the light guide plate sheet 11 and the adhesive sheet 30 are pulled out from the respective rolls. These sheets are laminated between the fourth roll 64 and the fifth roll 65 (described later) (nip), and then wound around the third roll 63 as the light guide plate laminated sheet 11a.

  The 4th roll 64 and the 5th roll 65 are rolls for laminating | stacking the light-guide plate sheet 11 and the adhesive sheet 30 conveyed between both rolls. The 4th roll 64 is connected with the raising / lowering apparatus (not shown). The fourth roll 64 is supported by the lifting device so as to be rotatable in the direction of the arrow in the figure, and a pressing force is applied to the fifth roll 65 side. The fifth roll 65 is a roller that receives the pressing force of the fourth roll 64. The fifth roll 65 is supported by a support mechanism (not shown) so as to be rotatable in the direction of the arrow in the figure.

  As shown in FIG. 7A, when the light guide plate sheet 11 and the adhesive sheet 30 are stacked and conveyed between the fourth roll 64 and the fifth roll 65, the fourth roll 64 and the fifth roll 65 Both sheets are laminated together to produce a light guide plate laminated sheet 11a as shown in FIG. 7B. The light guide plate laminated sheet 11 a is wound around the third roll 63 in a roll shape.

  For example, the light guide plate laminated sheet 11a is transported to the manufacturer of the electronic device in a rolled state. Since the adhesive sheet 30 is laminated on the light exit surface 12b of the light guide plate laminate sheet 11a, the light exit surface 12b can be protected. Then, each separated light guide plate 10 is manufactured by punching and cutting the light guide plate laminated sheet 11a in the manufacturer of the electronic device. Each separated light guide plate 10 includes an adhesive sheet 30.

  An operator who attaches the light guide plate 10 to an electronic device (not shown) can expose the adhesive layer 31 by peeling the release sheet 32 from the light guide plate 10. An operator can affix the light guide plate 10 to the electronic device by superimposing the light-emitting surface 12b side surface (adhesive layer 31) of the light guide plate 10 on the electronic device. Since the light guide plate 10 has the flat surface 31a formed on the surface layer of the adhesive layer 31, the light guide plate 10 can be uniformly laminated on the electronic device.

  Next, an application example of the light guide plate 10 will be described. FIG. 8 is a diagram illustrating the electronic paper 100 to which the light guide plate 10 is attached. FIG. 8A is a view for explaining an electronic paper 100 in which a touch panel 101 is arranged in a lower layer of the light guide plate 10. FIG. 8B is a diagram illustrating the electronic paper 100 in which the touch panel 101 is disposed on the upper layer of the light guide plate 10.

  In the electronic paper 100 illustrated in FIG. 8A, the touch panel 101, the adhesive layer 31, and the light guide plate 10 are sequentially stacked on the upper side of the electronic paper main body 102. The touch panel 101 is a device that detects a position operated by the user with respect to the light guide plate 10. The electronic paper main body 102 is a display device capable of rewriting display contents such as characters. In the electronic paper 100 illustrated in FIG. 8A, the light guide plate 10 is attached to the surface of the touch panel 101 through the adhesive layer 31. Note that in the electronic paper 100 shown in FIG. 8A, a protective layer (not shown) is formed on the surface layer of the light guide plate 10.

  In the electronic paper 100 illustrated in FIG. 8B, the adhesive layer 31, the light guide plate 10, the touch panel 101, and the antiglare layer 103 are sequentially stacked on the upper side of the electronic paper main body 102. The antiglare layer 103 is a layer for suppressing surface reflection of the touch panel 101. The antiglare layer 103 is formed by, for example, a resin sheet having fine irregularities (mat surface) formed on the surface. In the electronic paper 100 illustrated in FIG. 8B, the light guide plate 10 is attached to the surface of the electronic paper main body 102 via the adhesive layer 31.

According to the light guide plate 10 of the present embodiment described above, for example, the following effects can be obtained.
In the light guide plate 10 of the present embodiment, the adhesive sheet 30 is laminated on the light exit surface 12b. Therefore, the manufacturer of the electronic device does not need to form an adhesive layer on the light exit surface 12 b of the light guide plate 10, and can simply attach the light guide plate 10 to the electronic device by peeling off the release sheet 32 from the light guide plate 10. Therefore, the light guide plate 10 of the present embodiment can be quickly pasted by the electronic device that is the object. Moreover, since the adhesive sheet 30 is laminated | stacked on the light-emitting surface 12b, the light-guide plate 10 of this embodiment can protect the light-emitting surface 12b, without sticking a protective film.

  The light guide plate 10 of the present embodiment does not require a step of attaching a protective film to the light exit surface 12b of the light control layer 12 after peeling the shaping sheet 40 from the light guide plate 10. Therefore, according to the light guide plate 10 of the present embodiment, it is possible to reduce the cost required to procure and paste the protective film. Moreover, in the manufacturer of an electronic device, the cost required for incineration, regeneration, etc. of the peeled protective film can be reduced.

Since the light guide plate 10 of the present embodiment has the flat surface 31a formed on the surface layer of the adhesive layer 31, the light guide plate 10 can be uniformly laminated on the electronic device that is the object. Therefore, the electronic device provided with the light guide plate 10 of the present embodiment can obtain good optical characteristics.
In the light guide plate 10 of the present embodiment, the light guide plate sheet 11 and the pressure-sensitive adhesive sheet 30 can be laminated by a roll-to-roll method. Therefore, according to the method for manufacturing the light guide plate 10 of the present embodiment, a large amount of the light guide plate 10 can be manufactured more efficiently.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to each embodiment mentioned above, Various deformation | transformation and a change are possible like the deformation | transformation form mentioned later, These are also this book. It is within the technical scope of the invention. In addition, the effects described in each embodiment are merely a list of the most preferable effects resulting from the present invention, and are not limited to those described in each embodiment. Note that each of the above-described embodiments and modifications described later can be used in appropriate combination, but detailed description thereof will be omitted.

(Deformation)
Although this embodiment demonstrated the manufacturing process which laminates | stacks the adhesion layer 31 and the peeling sheet 32 simultaneously on the light-guide plate sheet 11, as shown in FIG. 7, it is not limited to this. It may be a manufacturing process including an adhesive layer laminating step for laminating the adhesive layer 31 on the light guide plate sheet 11 and a release sheet laminating step for laminating the release sheet 32 on the surface of the adhesive layer 31.

  Although this embodiment demonstrated the example which transports the light-guide plate laminated sheet 11a provided with the light-guide plate sheet 11 and the adhesive sheet 30 in the state wound up by roll shape, it is not limited to this. The light guide plate laminate sheet 11a may be transported in the form of a large sheet with multiple faces, or may be transported in the form of a separated light guide plate 10.

  In this embodiment, although the example which laminated | stacked the adhesion layer 31 on the light emission surface 12b of the light-guide plate 10 was demonstrated, it is not limited to this. The adhesive layer 31 may be laminated on the surface opposite to the light exit surface 12b of the light guide plate 10, or may be laminated on both the light exit surface 12b of the light guide plate 10 and the opposite surface thereof.

  The light guide plate 10 of the present embodiment is not limited to electronic paper, but is an electronic dictionary, calculator, electronic notebook, smartphone, PDA (Personal Digital Assistant), portable navigation device, notebook computer, portable game machine, portable audio, and other electronic devices. It can also be applied to equipment.

DESCRIPTION OF SYMBOLS 10 Light guide plate 11 Light guide plate sheet 11a Light guide plate laminated sheet 12a Light incident surface 12b Light exit surface 13 Concavity and convexity 31 Adhesive layer 31a Flat surface 32 Release sheet

Claims (4)

A light control layer that includes a light incident surface on which light is incident and a light output surface from which light is emitted, and that guides light incident from the light incident surface in a light guide direction;
An adhesive layer laminated on the light exit surface and having a flat surface on a surface layer opposite to the light exit surface;
A release sheet laminated on the flat surface of the adhesive layer;
An optical member comprising: A light guide plate sheet producing step of producing a light guide plate sheet having a multifaceted light guide plate having a light incident surface on which light is incident and a light exit surface from which light is emitted; and
An adhesive layer and a release sheet laminating step in which a release sheet having an adhesive layer formed on one side and the light guide plate sheet are laminated to each other by a roll-to-roll method,
The manufacturing method of the optical member containing this. A light guide plate sheet producing step of producing a light guide plate sheet having a multifaceted light guide plate having a light incident surface on which light is incident and a light exit surface from which light is emitted; and
An adhesive layer laminating step of laminating an adhesive layer on the light exit surface of the light guide plate sheet, and forming a flat surface on the surface layer opposite to the light exit surface;
A release sheet laminating step of laminating a release sheet on the flat surface of the adhesive layer;
The manufacturing method of an optical member provided with. It is a manufacturing method of the optical member according to claim 2 or 3,
The light guide plate sheet manufacturing process includes:
A forming sheet preparation step of preparing a forming sheet having a multi-faceted uneven pattern corresponding to the surface pattern of the light guide plate;
Using the shaping sheet, a surface pattern shaping step for producing a light guide plate sheet in which a plurality of light guide plates in which the surface pattern of the shaping sheet is shaped is arranged on the light exit surface;
The manufacturing method of the optical member characterized by the above-mentioned.

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