JP2011191552A - Block type dimming film and sticking method of the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for assembling and sticking dimming films like blocks directly to glass plates prepared in houses, furnishings, interiors, and the like. <P>SOLUTION: The dimming film, including a structure in which a polymer dispersion liquid crystal layer is placed between two flexible transparent films with transparent electrode membranes, and electrically controls scattering and transmission of light, is cut in squares, and the cut surfaces are stuck with glue with electrodes inbetween alternately. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

An object of the present invention is to provide a method for easily laminating a light control film directly on a glass plate or the like provided for a house or interior.

A conventional light control film is attached to a building window, etc., and it is electrically switched between scattering and transmission of light to control the transparency of the window, light control of the room, and as a large screen display element with a pattern. It's being used. Further, the reflectance can be controlled by attaching a light control film to a reflecting plate such as a mirror. When attaching this light control film to a window, mirror, etc., two glass plates or a glass plate and a mirror plate are preliminarily bonded together by a glass method, and the glass plate is attached to a window frame or mirror frame. The method of attaching to etc. is taken.

JP 2006-186540 A JP 2006-248251

In a conventional method of attaching a light control film between two glass plates in advance and attaching the glass plate to a window frame or the like, when the light control film is to be attached to an existing glass window, the entire glass window is replaced. There is a disadvantage that it is necessary and the cost and period for the construction are increased.

However, the light control films described in Patent Documents 1 and 2 have a structure in which a polymer-dispersed liquid crystal layer is sandwiched between flexible films, and have durability and light control for electrically controlling light scattering and transmission. In order to increase the light accuracy, the light control film itself becomes thick, and it is difficult to work, transport and process on the installation site of existing joinery and the like.

In order to solve the above problems, in a light control film having a structure in which a polymer-dispersed liquid crystal layer is sandwiched between two flexible transparent films provided with a transparent electrode film, two substantially transparent flexible films The film is attached while being shifted in the vertical and horizontal directions so that the transparent electrode film appears outside.

According to the present invention, the object is to have a structure in which a polymer-dispersed liquid crystal layer is sandwiched between two flexible films provided with a transparent electrode film, and electrically control scattering and transmission of light. The cut block-type light control film can be achieved by an attaching method through an adhesive.

According to the present invention, the object is to provide a structure in which a polymer-dispersed liquid crystal layer is sandwiched between a transparent plate or reflector made of glass or resin and two flexible transparent films provided with a transparent electrode film. Using a light-adjusting film attached to the block-type light-adjusting film via an adhesive to electrically control light scattering and transmission, and the voltage of the light-adjusting film using an adapter converter, etc. Low voltage drive.

According to the present invention, the dimming film is attached to an existing glass plate or the like provided to a house or the like via an adhesive, and then the peripheral portion of the dimming film is sealed with an insulating resin. The lead wire taken out from the peripheral part of the film and the light control film is firmly fixed to the glass plate, and prevents the light control film from peeling off from the peripheral part of the light control film and poor contact of the lead wire. Furthermore, it is possible to prevent leakage defects caused by moisture or the like around the light control film and corrosion of the light control film.

By installing a combination of multiple block-type light control films, it can be installed on large-area glass, and the block-type light control film itself is lightweight and easy to carry, and can be easily processed with scissors or a cutter. By combining them one by one, a large size is possible, and a low voltage is also possible for sensitivity adjustment. Furthermore, it can be easily attached by adhering to the block-type light control film side with a double-sided adhesive sheet or the like.

It is a fitting attachment sectional view of the present invention. It is a fitting attachment external view of the present invention. It is a sticking external view of the present invention.

For example, a transparent electrode film is formed on the entire surface of one side of a flat flexible transparent film, and a polymer dispersed liquid crystal layer is formed thereon. In the formation of the polymer-dispersed liquid crystal layer, a portion where the polymer-dispersed liquid crystal layer is not formed with a certain width is provided on two sides adjacent to one corner. A transparent electrode film is formed on the entire surface of one side of the other film, and is bonded to the film on which the polymer-dispersed liquid crystal layer is formed. When pasting, the light control film is completed by pasting the transparent electrode film while shifting it in the vertical and horizontal directions so that the transparent electrode film appears outside. When a plurality of completed light control films are combined and pasted, the transparent electrode films appearing outside the previous period are bonded together. A conductive adhesive or the like is used for bonding the transparent electrode films.

The shape of the flexible transparent film is preferably a square such as a square or a rectangle, but is not limited thereto. The material is preferably resin, but by using a material that can be printed on the surface, such as PET, it is possible to print various characters and designs on the surface of the light control sheet using a printing machine, copying machine, etc. It becomes possible.

The liquid crystal material layer 3 sandwiched between the transparent conductive films 1 and 2 and the liquid crystal material layer 6 sandwiched between the transparent conductive films 4 and 5 are formed on the glass plate 9 having the attachment frame 8 by the conductive adhesive 7. Affixed with an adhesive 10. A lead wire 11 is attached to the transparent conductive film 5 and a lead wire 13 is attached to the transparent conductive film 12. Each lead wire 11, 13 is taken out to supply voltage. The peripheral parts of the liquid crystal material layers 6 and 16 are attached with a tape 14, and the films 1, 2, 4, 5, 12, and 17 sealed with an insulating resin 15 are flexible with a transparent electrode film provided. A transparent electrode film is sandwiched between the liquid crystal material layers 3, 6, and 16.

The liquid crystal material layer 3 sandwiched between the transparent conductive films 1 and 2 is attached to the liquid crystal material layer 6 sandwiched between the transparent conductive films 4 and 5 with a conductive adhesive 7 or the like.

The flexible film constituting the films 1, 2, 4, 5, 12, and 17 is mainly composed of an organic polymer film, and for example, PET, polycarbonate, polyimide, vinyl chloride, polypropylene, polyethylene, and the like are used.

In order to color this flexible film, a pigment may be added to the extent that transparency is not impaired, or surface processing such as sand mat processing may be performed.

As the transparent electrode films of the films 1, 2, 4, 5, 12, and 17, a tin oxide film such as a NESA film or an indium oxide film such as an ITO film is used.

In order to improve the adhesion of the transparent electrode film to the flexible film, an intermediate layer may be provided between the flexible film and the transparent electrode film. As this intermediate layer, a layer formed by hydrolysis of an organometallic compound such as an organosilicon compound, a titanium alkyl ester, or a zirconium alkyl ester is preferably used.

A nematic type, a cholesteric type, a smectic type, or the like is used for the liquid crystal compound of the liquid crystal material layers 3, 6, and 16.

As the adhesive 10, a resin adhesive such as an epoxy resin, a silicone resin, or an acrylate resin, or a double-sided adhesive type film or tape that holds an adhesive on both sides is used.

The adhesive 10 uses a transparent adhesive when the adhesive 10 is used on the entire surface between the light control film and the glass plate 9 or the reflector, but when used only on the periphery, the adhesive 10 is not transparent. May be.

As the insulating resin 15, butyl rubber, silicone resin, epoxy resin, urethane resin, or the like is used.

Next, a method for attaching the light control film will be described.
An adhesive 10 is applied to a glass plate 9 having a frame 8. Next, a light control film in which the liquid crystal material layers 3, 6, and 16 are sandwiched between the films 1, 2, 4, 5, 12, and 17 is attached to the glass plate 9 coated with the adhesive 10. Thereafter, the peripheral portion of the light control film is sealed with the insulating resin 15.

The light control film may be protected by sealing its side in advance with a tape 14 or a resin with an adhesive.

An ultraviolet filter, a hard coat film, an infrared cut film, or the like may be attached to the upper surface of the light control film after the light control film is attached to the glass plate 9. Moreover, you may make it attach a transparent resin board to the upper surface of a light control film, and protect a light control film.

When the adhesive sheet is attached to the light control film and attached to the glass plate 5, the adhesive sheet may be peeled off and attached.

As a method of applying the adhesive 10 to the glass plate 9, the adhesive 10 may be applied directly to the glass plate 5 by brushing or may be sprayed by spraying. Moreover, you may affix with a double-sided tape. You may make it stick the light control film with which the adhesive agent 10 was beforehand coated on the glass plate 9 directly.

As a method of sealing the peripheral part of the light control film with the insulating resin 15, butyl rubber may be attached to the peripheral part of the light control film, or after applying a silicone resin or the like to the peripheral part by brush, It may be cured.

After sealing the periphery of the light control film with the insulating resin 15, the insulating resin 15 may be covered with a resin frame or a metal frame.
The glass plate 9 on which the light control film is to be attached may be a transparent resin plate such as acrylic or polycarbonate. Alternatively, a reflector such as a mirror may be used.

In the above configuration, when no voltage is applied between the lead wires 11 and 13, since the liquid crystal compound is randomly oriented as a whole, incident light is scattered. When a direct current or alternating voltage of 1 to 200 V is applied between the lead wires 11 and 13 by using, for example, a converter or an inverter, the liquid crystal is aligned parallel to the electric field and incident due to the dielectric anisotropy of the liquid crystal. Transmits light without scattering. Due to this phenomenon, the light control film can adjust the amount of transmitted light by turning on and off the voltage, and the glass plate 9 on which the light control film is attached can be used as a light control window or a light control curtain.

As described above, according to the present invention, the lead wire taken out from the peripheral portion of the light control film or the light control film is firmly fixed to the glass plate, and the light control film is peeled off from the peripheral portion or the lead wire. It is possible to prevent the occurrence of poor contact. Furthermore, it is possible to prevent moisture from adhering to the peripheral portion of the light control film, causing the light control film to have a leak failure, and corrosion of the light control film.

The block-type light control film of the present invention can be industrially produced.

DESCRIPTION OF SYMBOLS 1 Transparent conductive film 2 Transparent conductive film 3 Liquid crystal material layer 4 Transparent conductive film 5 Transparent conductive film 6 Liquid crystal material layer 7 Conductive adhesive 8 Frame 9 Glass plate 10 Adhesive 11 Lead wire 12 Transparent conductive film 13 Lead wire 14 Tape 15 Insulating resin

Claims (3)

In a light control film having a structure in which a polymer-dispersed liquid crystal layer is sandwiched between two flexible transparent films provided with a transparent electrode film, the two transparent transparent films appear so that the transparent electrode film appears outside. A block-type light control film characterized by being attached while being shifted in the vertical and horizontal directions. A block-type light control film characterized in that a printable resin is used as the material of the flexible transparent film. When pasting and installing a plurality of block-type light control films in combination, a method of attaching a block-type light control film, wherein the transparent electrode films are bonded together with a conductive adhesive.

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