JP4130492B2 - Method for producing heterogeneous polymer array plate - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a process for the production of useful heterologous polymer sequences plate as such waveguide type diffuser.
[0002]
BACKGROUND OF THE INVENTION
Conventionally, as a waveguide type diffusion plate, a photolithography method has been known. However, there is a problem in that it is poor in mass productivity and requires a specially formulated resin composition for production and requires a lot of time and labor for its preparation.
[0003]
[Technical Problem of the Invention]
The present invention may be a general purpose polymers can widely set the optical characteristics such as refractive index difference that can be with the use of mass production is an object of development of a method for manufacturing easy heterologous polymer sequences plate.
[0004]
[Means for solving problems]
The present invention is a film F in which a polymer layer having a refractive index different from that of the polymer layer forming the polymer film is provided on both sides of the polymer film as the polymer layer, and the polymer layers provided on both sides of the film are made of the same polymer. The laminated body formed by laminating and adhering to each other is cut into thin layers so that the laminating direction is the width direction, and a thin layer body is formed in which the laminated polymer layers are arranged in a plane direction. A method for producing a polymer array plate is provided.
[0005]
【The invention's effect】
According to the present invention, it can be formed by a method of cutting polymer layers having different refractive indexes and is excellent in mass productivity, and can be manufactured without the need for a special apparatus such as a photolithography apparatus. the optical properties of the refractive index difference between such a polymer layer made widely selected from general-purpose polymers for laminating can widely set, that has excellent lamination efficiency may be used a film without distinguishing between the front and back during lamination.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The heterogeneous polymer array plate according to the present invention is composed of polymer layers having different refractive indexes arranged in a close contact state in a plane direction with a predetermined repeating unit. Examples thereof are shown in FIGS. 1, 2, and 3. 1, 2, 3 and 4 are polymer layers having different refractive indexes. The figure shows an outline of the heterogeneous polymer array plate.
[0007]
Such a heterogeneous polymer array plate is produced by providing a polymer layer having a refractive index different from that of the polymer layer forming the polymer film on both sides of the polymer film as the polymer layer, and the polymer layers provided on both sides of the film are the same. A method of forming a thin layer body in which a laminated body formed by laminating and adhering a film F made of a polymer is thinly cut so that the laminating direction is a width direction, and the laminated polymer layers are arranged in a plane direction Can be done.
[0008]
The laminate can be formed by an appropriate method. As an example, as shown in FIG. 5, a polymer layer 13 having a refractive index different from that of the polymer forming the polymer film is applied on both sides of the polymer film 14, and the polymer layers 13 on both sides of the film are the same. There is a method in which a film F made of a polymer is formed and laminated. 4 shows a reference example, in which polymer films 11, 12,... Having different refractive indexes are laminated in a predetermined repetition order.
[0009]
Further, as illustrated in FIG. 6, to form a different refractive index, etc. recoating method of a multilayer extrusion method or the polymer solution polymer 15,16,17 Tona Lula Mi titanate film 18, it in such manner that the product layer Also, the above-described laminate can be formed. The polymers 15 and 17 are the same. The polymer layers provided on both sides of the polymer film are preferably formed by a casting method such as the above-described coating method.
[0010]
The total number of laminated films F can be appropriately determined according to the width and the like of the target heterogeneous polymer array plate.
[0011]
The combination of polymer layers having different refractive indexes to be laminated can be appropriately determined according to the purpose of use, etc., but the refractive index difference between adjacent polymer layers is 0.001 to 0.001 from the point of obtaining a waveguide type diffusion plate or the like. 0.5, especially 0.003 to 0.4, especially 0.005 to 0.2 is preferable.
[0012]
The thickness of each polymer layer in the laminate can be appropriately determined according to the purpose of use and the like, but is generally 0.1 to 200 μm, especially 0.5 to 100 μm, particularly 1 to 50 μm. From the viewpoint of lamination efficiency, a method of laminating a film or the like is preferable. A polymer layer having a refractive index difference on both sides of the polymer film is provided, the film F was the same as on both sides of the polymer layer films, terms such as laminated efficiency can be used interchangeably on the front and back when stacking it More advantageous.
[0013]
In the case where adhesion between polymer layers is required due to lamination using a film or the like, the adhesion treatment is performed by, for example, a method in which the laminate is heated to a temperature at which the polymer layer forming the lamination interface melts and pressed. be able to. Moreover, the system etc. which carry out the adhesion | attachment process through a polymer-type adhesive agent can also be taken. As the adhesive, an appropriate one such as a hot melt type or a pressure sensitive adhesive type can be used.
[0014]
There are no particular limitations on the polymer species with different refractive indexes that form the laminate, and any suitable type may be used. In general, a polymer excellent in transparency can be preferably used, but is not limited thereto. Incidentally, examples of the polymer include acrylic polymers and silicone polymers, polyesters and polyurethanes, polyether sulfones and polycarbonates, polyamides and polyimides, polyolefins and acetate polymers, polyvinyl alcohol and polystyrene, vinyl acetate polymers and polyvinyl chloride, Examples include polyethers, various rubber polymers, various liquid crystal polymers, thermosetting resins such as phenolic resins, melamine resins, acrylic resins, urethane resins, acrylic urethane resins, epoxy resins, and silicone resins, and ultraviolet curable resins. .
[0015]
The refractive index characteristics at the interface of the polymer layers having different refractive indexes in the different polymer array plate according to the present invention may be appropriate such as a step index type or a graded index type. By the way, graded index type refractive index characteristics are, for example, a method in which a clear interface is lost by fusing treatment so that the polymers forming those layers are mixed and fused together at the interface of polymer layers with different refractive indexes. It can be given by.
[0016]
In addition, the interface of the polymer layers having different refractive indexes in the different polymer array plates may be a smooth surface as illustrated in FIGS. 1 and 2, but the unevenness as illustrated in FIG. It is preferably formed in a structure. Such a concavo-convex structure can be obtained by, for example, a method of laminating a film having a roughened surface through a pressure-sensitive adhesive layer or the like.
[0017]
From the viewpoint of improving the diffusion effect as described above, it is also effective to disperse and contain fine particles having different refractive indexes in at least one polymer layer having different refractive indexes forming a repeating unit. The uneven structure described above can be imparted to the interface of the polymer layer based on the contained fine particles.
[0018]
As the fine particles having different refractive indexes, appropriate organic or inorganic particles can be used. Examples include metal oxide particles such as silica, alumina, titania and zirconia, tin oxide and indium oxide, cadmium oxide and antimony oxide, metal particles and other inorganic fine particles, and crosslinked or uncrosslinked polymers. Organic fine particles made up of and the like. Transparent fine particles can be preferably used from the standpoint of inconspicuousness.
[0019]
In the production of the heterogeneous polymer array plate according to the present invention , the laminate formed by laminating and sticking the above-mentioned film F is cut into thin layers so that the stacking direction is the width direction, and the stacked polymer layers are aligned in the plane direction. comprising Te thin layer body can be performed by a method of forming a.
[0020]
As illustrated in FIG. 7, an appropriate cutting means 6 such as a cutter can be used for cutting, but the cutting process may be performed on the surface 51 on which the stacked structure of the stacked body 5 appears. It is preferable from the viewpoint of the stability of the cutting treatment due to the crystallization, and in turn, the uniform cutting ability. In the cutting process in the stacking direction, the polymer layers 11 and 12 to be cut are sequentially changed, and unstable cutting is likely to occur due to changes in cutting characteristics due to differences in physical properties.
[0021]
Further, at the time of the cutting, as shown in FIG. 8, the laminate 5 can be subjected to a deformation process. That is, the cutting process can be performed without applying a deformation process to the laminate 5 to obtain a heterogeneous polymer array plate in which the polymer layers 1 and 2 as illustrated in FIG. 1 are arranged in a direction perpendicular to the plate plane. It is possible to obtain a heterogeneous polymer array plate in which the polymer layers 1 and 2 are inclinedly arranged in the thickness direction with respect to the plate plane as illustrated in FIG.
[0022]
The above-described slant arrangement of the polymer layers is effective in improving the diffusion effect because the transmitted light passes through the polymer layer interface having a different refractive index. The tilt angle in the tilted arrangement of the polymer layer is preferably less than the critical angle from the viewpoint of preventing total reflection, and therefore the tilt angle can be appropriately determined in the range of 0 degree to the critical angle.
[0023]
The deformation process of the laminated body described above can be performed by an appropriate method. In the example of FIG. 8, the laminated body is wound around the press shaft 71 to form a cylindrical body 52, which is attached to the female die 72 together with the press shaft 71, and subjected to a pressing process, and the cylindrical body is loaded with a shifting force in the stacking direction. The polymer layers forming the laminate are arranged in an inclined manner so that the state is fixed.
[0024]
Then, as illustrated in FIG. 9, a cylindrical body 52 in which the formed polymer layers are arranged in an inclined manner is cut through the cutting means 6 to obtain a thin layer body, so that different types of polymer layers as shown in FIG. A polymer array plate can be obtained. In addition, the dissimilar polymer arrangement | sequence board obtained by the cutting process can perform appropriate processes, such as a grinding process, for the purpose of surface finishing, thickness adjustment, etc. as needed.
[0025]
The thickness of the dissimilar polymer array plate according to the present invention can be appropriately determined according to the purpose of use and the like, and can be 1 mm or more. In general, from the viewpoint of handling properties such as lightness and flexibility, the thickness is 1 μm to 1 mm, especially 5 to 500 μm, particularly 10 to 200 μm.
[0026]
The heterogeneous polymer array plate according to the present invention exhibits various optical characteristics such as light transmittance and diffusivity based on a structure in which polymer layers having different refractive indexes are arrayed in a plane direction. It can be preferably used as an optical element.
[0027]
【Example】
Example 1
A poly (methyl methacrylate) layer with a thickness of 2 μm is formed on both sides of a polycarbonate cast film with a thickness of 6 μm. Ten thousand layers of the polymethyl methacrylate layer are laminated and heat-pressed, and the lamination interface is adhered to the laminated layer to a thickness of 10 cm. A body was obtained, and it was deformed by the method according to FIG. 8 to tilt the polymer layer by 20 degrees.
[0028]
The inclined cylindrical body is cut into thin layers through a cutter so that the laminating direction is the width direction, and the laminated film layers are arranged in the plane direction and have a thickness of 50 μm and a length of 30 cm (width 10 cm). An inclined array type heterogeneous polymer array plate as shown in FIG. 2 was obtained. When perpendicular parallel light was incident on the different polymer array plate, transmitted light composed of diffused light could be obtained with high light transmittance.
[Brief description of the drawings]
FIG. 1 is a cross-sectional showing an outline of a heterologous polymer sequences plate Examples Figure 2 is a cross-sectional view showing a schematic of another heterologous polymer sequences plate Example 3] further shows a schematic of another heterologous polymer sequences plate Example cross-sectional view and FIG. 4 is an explanatory view illustration 6 another stack forming example of illustration Figure 5 product layer formation examples shown a reference example of the laminated body 7 laminates cut examples Explanatory drawing of FIG. 8 Explanatory drawing of a laminated body modification processing example FIG. 9 Explanatory drawing of another laminated body cutting example [Explanation of symbols]
1, 2, 3, 4: Polymer layer
11, 12, 14: Polymer film
13: Polymer coating layer
18: Laminated film 5, 52: Laminate 6: Cutting means

Claims (3)

A polymer layer having a refractive index different from that of the polymer layer forming the polymer film is provided on both sides of the polymer film as the polymer layer, and the film F made of the same polymer is laminated and adhered to both sides of the film. The laminated body is cut into thin layers such that the laminating direction is the width direction, and a thin layer body is formed by arranging the laminated polymer layers in a plane direction. Production method. The method for producing a heterogeneous polymer array plate according to claim 1 , wherein the polymer layers provided on both sides of the polymer film are formed by a cast method. 3. The method for producing a heterogeneous polymer array plate according to claim 1, wherein each polymer layer has a thickness obtained by applying a laminating force in a laminating direction to a laminate using a film F having a thickness of each polymer layer of 200 μm or less. A method for producing a heterogeneous polymer array plate in which a thin layer is cut under a deformation process inclined in the vertical direction.

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