JP7383232B2 - Light control module and its manufacturing method - Google Patents

Description

The present invention relates to a light control module using a light control sheet and a method for manufacturing the same.

The light control sheet includes a light control layer containing a liquid crystal composition and a pair of transparent electrode layers sandwiching the light control layer. The light transmittance and haze of the light control sheet change as the alignment state of liquid crystal molecules changes depending on the potential difference between the pair of transparent electrode layers. As described above, since the light control sheet can control the transmittance of light, it is sometimes used by being attached to the window glass of buildings, vehicles, etc., for example.

When a light control sheet is used for such purposes, such as when it is placed at the boundary between two spaces with a large temperature difference, such as the boundary between outdoors and indoors, moisture caused by rainwater or condensation may be absorbed. Adhesion to the light control sheet may occur. When moisture enters the light control layer, the light transmittance and haze variable function of the light control sheet deteriorates.

As a prior art technology that prevents the light transmittance and haze variable function of the light control sheet from deteriorating, there is a light control unit (hereinafter also referred to as a light control module) that can improve the waterproofness of the light control sheet. is disclosed in Patent Document 1. This light control unit consists of a light control sheet, a supporting base material on which the light control sheet is placed, a wiring section for taking out a pair of electrodes of the light control sheet to the outside, and a moisture absorbing material from the sides of the light control sheet and the wiring section. Equipped with a waterproof part that prevents the intrusion of With such a configuration, it is possible to improve the waterproofness of the light control sheet.

In this technology, it is possible to improve the waterproofness of the light control sheet by using a waterproof portion that covers the end face and wiring portion of the light control sheet.

For example, when a waterproof tape is used as a covering part for covering the end face of a light control sheet, two sides of a rectangular light control sheet 2 placed on a support base material 1 are A seam is formed by overlapping and adhering orthogonal corner parts 3 with the waterproof tape 4 extending from one side facing downward and the waterproof tape 5 stretching from the other side facing upward. A gap 7 is formed at the joint, as illustrated in FIG. 4(b).

In order to prevent water from entering through the gap 7 formed in the corner part 3, for example, as illustrated in FIG. 5(a), conventionally, the corner part of the light control sheet 2 is Corner tape 8 was attached to 3.

As illustrated in FIG. 5(b), a corner tape 8, which is a double-sided tape consisting only of an adhesive layer, is provided on the corner part 3 of the light control sheet 2, and then the bottom tape 8, which is a double-sided tape made of only an adhesive layer, is provided on the corner part 3 of the light control sheet 2. The waterproof function is ensured by abutting and bonding the side waterproof tape 4 and the upper waterproof tape 5 extending from the other adjacent side onto the corner tape 8. However, the work of pasting double-sided tape consisting only of an adhesive layer in a predetermined position, or the work of butting and gluing waterproof tape together, requires very high precision because it is essential to match and cut the dimensions at the actual location. . Furthermore, as mentioned above, since multiple pieces of tape are pasted on the corner part 3, the thickness increases compared to other areas, and this creates new problems such as hindering the thinning and flattening of the light control sheet. Challenges also exist.

Patent No. 6669218

Therefore, the present invention provides a light control unit and its manufacturing method that can ensure the waterproofness of the light control sheet through simple processing, and that can ensure that the light control sheet is thin and flat even when waterproof. The challenge is to provide the following.

As a means for solving the above problems, a first aspect of the present invention includes a transparent support base material, a rectangular light control sheet disposed on the transparent support base material, and a light control sheet affixed to the edge of the light control sheet. A dimming module comprising: a waterproof tape;
At the four corners of the light control sheet,
On top of the lower waterproof tape extending from one side, the upper waterproof tape extending from the other adjacent side is attached.
The lower waterproof tape has a longitudinal tip extending outward from the upper waterproof tape,
At least, the intersection of the edges on both sides of the lower waterproof tape and the edge on the light control sheet side of the upper waterproof tape, and the intersection between the edge on the light control sheet side of the lower waterproof tape and the upper waterproof tape. This light control module is characterized in that a resin sealing part is formed in the gap formed at the intersection with the edge of the sheet to seal the gap with resin.

Further, a second aspect of the present invention includes a transparent support base material, a rectangular light control sheet disposed on the transparent support base material, and a waterproof tape affixed to the edge of the light control sheet. A light control module equipped with
At the four corners of the light control sheet,
On top of the lower waterproof tape extending from one side, the upper waterproof tape extending from the other adjacent side is attached.
The longitudinal tip of the lower waterproof tape is covered by the upper waterproof tape.
There is a resin sealing part that seals the gap with resin in the gap formed at the intersection of the edges on both sides of the lower waterproof tape and the edge on the light control sheet side of the upper waterproof tape. This is a light control module characterized by the following:

Further, a third aspect of the present invention includes a transparent support base material, a rectangular light control sheet disposed on the transparent support base material, and a waterproof tape affixed to the edge of the light control sheet. A light control module equipped with
At the four corners of the light control sheet,
On top of the lower waterproof tape extending from one side, the upper waterproof tape extending from the other adjacent side is attached.
The lower waterproof tape has one of its longitudinal ends covered by the upper waterproof tape,
On the side where the longitudinal tip of the lower waterproof tape is covered by the upper waterproof tape, the edge of the lower waterproof tape on the light control sheet side and the edge of the upper waterproof tape on the light control sheet side. A resin sealing portion is formed in the gap formed at the intersection of the end edge portion and the edge portion, and the gap is sealed with resin.
On the side where the longitudinal end of the lower waterproof tape extends outward from the upper waterproof tape, the edge of the lower waterproof tape, the edge of the upper waterproof tape, This light control module is characterized in that a resin sealing portion is formed in a gap formed at the intersection of the two, in which the gap is sealed with resin.

Further, a fourth aspect of the present invention is a method for manufacturing the dimming module according to the first aspect, comprising:
a pasting step of arranging the rectangular light control sheet on the transparent support base material and pasting the waterproof tape on the edge of the light control sheet;
A resin-sealed portion is formed by sealing with a resin the gap formed at the intersection of the edge portions on both sides of the lower waterproof tape and the edge portions on both sides of the upper waterproof tape. It is equipped with a sealing process,
The pasting step includes, in the four corner parts of the light control sheet, at least the intersections of the edge parts on both sides of the lower waterproof tape and the edge part of the upper waterproof tape on the light control sheet side, and the lower side. This is a process of forming a resin sealing part to seal the gap with resin at the gap formed at the intersection of the edge of the waterproof tape on the light control sheet side and the edge of the upper waterproof sheet. This is a method of manufacturing a light control module characterized by the following.

Further, a fifth aspect of the present invention is a method for manufacturing the dimming module according to the second aspect, comprising:
a pasting step of arranging the rectangular light control sheet on the transparent support base material and pasting the waterproof tape on the edge of the light control sheet;
A resin-sealed portion is formed by sealing the gap formed at the intersection of the edge portions on both sides of the lower waterproof tape and the edge portion of the upper waterproof tape on the light control sheet side with a resin. It is equipped with a sealing process to form a
The pasting step includes pasting the upper waterproof tape extending from the other adjacent side onto the lower waterproof tape stretching from one side at the four corner parts of the light control sheet. The method for manufacturing a light control module is characterized in that the lower waterproof tape is attached so that the tip in the longitudinal direction is covered with the upper waterproof tape.

Further, a sixth aspect of the present invention is a method for manufacturing the dimming module according to the third aspect, comprising:
a pasting step of arranging the rectangular light control sheet on the transparent support base material and pasting the waterproof tape on the edge of the light control sheet;
the gap formed at the intersection between the edge portions on both sides of the lower waterproof tape and the edge portion of the upper waterproof tape on the light control sheet side; a sealing step of forming a resin-sealed portion by sealing with resin the gap formed at the intersection of the edge portion and the edge portion of the upper waterproof tape on the opposite side of the light control sheet; and,
In the pasting process, one of the ends of the lower waterproof tape in the longitudinal direction is pasted so that it is covered by the upper waterproof tape, and the other end is attached to the upper waterproof tape. This method of manufacturing a light control module is characterized by a step of pasting the tape so as to stretch it outward.

By adopting the above configuration, the present invention can ensure the waterproofness of the light control sheet through simple processing, and can also ensure the thinness and flatness of the light control sheet even after imparting waterproofness. It is possible to provide an optical unit and its manufacturing method.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram illustrating a light control module according to a first embodiment of the present invention, in which (a) shows a top view and (b) shows a cross-sectional view. It is an explanatory view illustrating a light control module concerning a second embodiment of the present invention, and (a) shows a top view and (b) shows a sectional view. It is an explanatory view illustrating a light control module concerning a third embodiment of the present invention, and (a) shows a top view and (b) shows a sectional view. FIG. 3 is an explanatory diagram illustrating a state in which a lower waterproof tape and an upper waterproof tape are attached to four edge parts of a rectangular light control sheet placed on a support base material, in which (a) is a top view; (b) shows a cross-sectional view. FIG. 2 is an explanatory diagram illustrating a conventional light control module, in which (a) shows a top view and (b) shows a cross-sectional view.

<First embodiment>
A light control module according to a first embodiment of the present invention will be described using FIG. 1.
The light control module 10-1 of the present invention includes a transparent support base material 1, a rectangular light control sheet 2 placed on the transparent support base material 1, and a light control sheet 2 attached to the entire edge of the light control sheet 2. This is a light control module including waterproof tapes 4 and 5.

As shown in FIGS. 1(a) and 1(b), the light control module 10-1 of the present invention has a lower waterproof tape 4 extending from one side at the four corner parts 3 of the light control sheet 2. An upper waterproof tape 5 extending from the other adjacent side is attached on top of the tape.
Here, the lower side means the side closer to the transparent support base material 1, and the upper side means the side farther from the transparent support base material 1. The same meaning shall apply below.

There is no particular need to limit the method of attaching the waterproof tapes 4 and 5 to the edge portions of the light control sheet 2. For example, it may be pasted by manual pasting work. Further, the waterproof tapes 4 and 5 have a form similar to a normal adhesive tape with an adhesive formed on one side, and can also be used by preparing a tape pasting machine. Pasting can also be done by manually operating a tape pasting machine. Also, a mechanism that automatically conveys the transparent support base material 1 to a tape pasting machine, aligns and arranges the light control sheet 2 at a predetermined position on the transparent support base material 1, and further automatically pastes the tape. It is also possible to use a device equipped with

Further, the lower waterproof tape 4 is provided with a longitudinal end extending outward from the upper waterproof tape 5.

In this way, when the upper waterproof tape 5 is pasted over the lower waterproof tape 4, there is a gap 7 between the edges 4-1 and 4-2 on both sides of the lower waterproof tape 4. is formed (see FIG. 4(b)). Specifically, the intersection points of the edge portions 4-1 and 4-2 on both sides of the lower waterproof tape 4 and the edge portion 5-2 of the upper waterproof tape on the light control sheet 2 side, and the lower A resin seal is applied to seal the gap with resin at the gap formed at the intersection of the edge 4-2 of the waterproof tape 4 on the light control sheet side and the outer edge 5-1 of the upper waterproof sheet. A feature is that a stop portion 6 is formed.

Note that the gap formed at the intersection between the outer edge 4-1 of the lower waterproof sheet 4 and the outer edge 5-1 of the upper waterproof sheet 5 forms the resin sealing part 6. Although it is not necessary, it may be formed. The gap is a gap formed at the intersection of the outer edge 4-1 of the lower waterproof sheet 4 and the edge 5-2 of the upper waterproof sheet 5 on the light control sheet side, and the lower waterproof sheet 4. Because the resin sealing part 6 is formed in the gap formed at the intersection of the edge part 4-2 of the light control sheet side of the sheet 4 and the outer edge part 5-1 of the upper waterproof sheet 5. This is because there is no need to form a double resin sealing portion.

The resin sealing portion 6 in which the gap is sealed with resin can be easily formed. There is no need to limit the specific method, but for example, it may be possible to prepare a varnish-like resin by dissolving the resin in a solvent and dispensing it onto the relevant area with a dispenser, or to use a sealing resin. It is also possible to convert it into printing ink and print it all at once using printing technology such as screen printing.

Note that the lower waterproof tape 4 and the upper waterproof tape 5 are shown to be in a lower and upper relationship at a certain corner portion 3. The rectangular light control sheet 2 has four corner parts 3. At each corner portion 3, a lower waterproof tape 4 and an upper waterproof tape 5 extend toward the corner portion 3 from two adjacent sides and are overlapped.

Therefore, for example, in a certain corner part 3, the lower waterproof tape 4 is on the lower side, and the upper waterproof tape is attached above, but the other side where the waterproof tape 4 is stretched is attached. The corner portion 3 does not necessarily have to be on the lower side. That is, it may be the upper waterproof tape.

Similarly, in a certain corner part 3, the upper waterproof tape 5 is on the upper side, and the lower waterproof tape is attached below, but the other corner part 3 where the waterproof tape extends , it does not necessarily have to be on the upper side.

When attaching four waterproof tapes to the four sides of the light control sheet 2, they can be attached in various orders. For example, two lower waterproof tapes are configured by first attaching two waterproof tapes to opposite sides of the light control sheet 2 on the transparent support base material 1. Next, two upper waterproof tapes can be constructed by pasting two waterproof tapes on the remaining two opposing sides. At this time, in this embodiment, the upper waterproof tape is attached with the longitudinal end of the lower waterproof tape protruding outward beyond the width of the upper waterproof tape.

(Transparent support base material)
The transparent support base material 1 is a transparent base material. Examples of materials used for the transparent support base 1 include glass, acrylic, polycarbonate, polyethylene, polypropylene, and polyethylene terephthalate. In this embodiment, an optical polyethylene terephthalate film is particularly preferably used as the transparent support base material 1. The thickness of the transparent support base material 1 is thinner than the thickness of the light control sheet 2. The thickness of the transparent support base material 1 is preferably 25 μm or more and 200 μm or less, more preferably 25 μm or more and 190 μm or less. If the thickness of the transparent support base material 1 is equal to or greater than the above lower limit, the light control module will be provided with appropriate rigidity that improves ease of handling compared to the case where the light control sheet 2 is handled alone. On the other hand, if the thickness of the transparent support base material 1 is below the above upper limit value, the flexibility of the light control module is prevented from becoming excessively small compared to the flexibility of the light control sheet 2, and for example, Also, when attaching the light control module to a curved surface, it is easy to align the light control module along the curved surface.

(Dimmer sheet)
The light control sheet 2 is attached to the transparent support base material 1. In a plan view from a position facing the surface of the light control sheet 2, the outer shape of the transparent support base material 1 is larger than the outer shape of the light control sheet 2. In other words, all the outer edges of the light control sheet 2 are located inside the outer edge of the transparent support base material 1 in the above plan view. That is, the light control sheet 2 is attached to the surface of the transparent support base material 1 while being located only on the transparent support base material 1 . The external shapes of the light control sheet 2 and the transparent support base material 1 are not particularly limited. As an example, the outer shape of the light control sheet 2 and the outer shape of the transparent support base material 1 can both be rectangular. In the description of this embodiment, the case where the light control sheet 2 has a rectangular shape is described for the purpose of facilitating the description, but there is no need to limit it to this. The light control sheet 2 includes a light control layer and a pair of transparent electrode layers, but the details are omitted.

(waterproof tape)
The waterproof tapes 4 and 5 are adhesive tapes that are attached to the edge portions of the light control sheet 2 placed on the transparent support base 1 to shield the light control sheet 2 from moisture. It is desirable to use a resin base material that has low moisture permeability and content, and does not swell due to contact with moisture, so-called highly waterproof. Examples of such resin materials include acrylic foam base materials. The waterproof tapes 4 and 5 are preferably adhesive tapes in which an adhesive layer is formed on such a resin film. The material for the adhesive layer is preferably an adhesive composition that has excellent waterproof properties like the resin film. Examples of such adhesive compositions include acrylic adhesives.

Hot melt adhesive may be used instead of waterproof tape. As the hot melt adhesive, an ethylene vinyl acetate (EVA) type or ethylene methyl methacrylate (EMMA) type hot melt adhesive is preferably used. The waterproof portion made of hot melt adhesive is formed using, for example, a glue gun. EVA-based and EMMA-based materials have high adhesion to polyethylene terephthalate films. Therefore, when a polyethylene terephthalate film is used as the transparent support base material 1, it is preferable to use an EVA-based or EMMA-based material as the material for the waterproof portion.

Moreover, a thermocompression bonding sheet may be used instead of the waterproof tape. As the thermocompression bonding sheet, an EVA thermocompression bonding sheet is suitably used. When using a thermocompression bonding sheet, for example, a portion of the waterproof portion that is in contact with the surface of the light control sheet 2 is fixed to the surface by thermocompression bonding, and a portion of the waterproof portion that is in contact with the surface of the transparent support base material 1 is fixed to the surface by thermocompression bonding. A portion is secured to the surface by thermocompression.

(Resin sealing part)
The material constituting the resin sealing part 6 is preferably a material that has high adhesiveness to the transparent supporting base material 1, the light control sheet 2, and the waterproof tapes 4 and 5, and has high transparency. In addition, it is required to have good affinity and appropriate viscosity so that it can well penetrate into the gaps surrounded by the side surfaces of the waterproof tapes 4 and 5 and the adhesive layers of the waterproof tapes 4 and 5. Further, the resin constituting the resin sealing portion 6 may be a curable resin that hardens over time, or may remain adhesive. If it is necessary to avoid adhesion of foreign matter, curable resin is preferred. Alternatively, it may be an elastomer with sealing properties that seal gaps.
As a specific material constituting the resin sealing part 6, for example, silicone resin can be mentioned.

(Production method)
Next, a method for manufacturing a light control module according to the present invention will be explained using FIGS. 1 and 4.
The method for manufacturing a light control module of the present invention includes a pasting step of arranging a rectangular light control sheet 2 on a transparent support base material 1 and pasting waterproof tapes 4 and 5 on the edges of the light control sheet 2. , a gap 7 formed at the intersection of the edge portions 4-1, 4-2 on both sides of the lower waterproof tape 4 and the edge portions 5-1, 5-2 on both sides of the upper waterproof tape 5. (See FIG. 4(b)) is provided with a sealing step of forming a resin sealing portion 6 by sealing with resin.

In the pasting process, the four waterproof tapes may be pasted in any order. For example, as illustrated in Figure 1(a), two waterproof tapes in the vertical direction of the figure are pasted to form the lower waterproof tape 4, and then two waterproof tapes in the horizontal direction of the figure are pasted to form the upper waterproof tape 4. It may also be used as a waterproof tape 5. Alternatively, the reverse may be used. Also, of the two waterproof tapes in the vertical direction in Figure 1(a), apply the left waterproof tape first, then apply the upper waterproof tape second among the two horizontal waterproof tapes in the figure. Next, of the two waterproof tapes in the vertical direction in the diagram, paste the right waterproof tape third, then paste the lower waterproof tape in the fourth of the two horizontal waterproof tapes in the diagram. Even things are fine. Although the vertical relationship in the four corner portions 3 differs, the position where the gap is formed remains the same. Note that the vertical direction here refers to the direction in which the two electrode bands 11-1 and 11-2 in FIG. 1(a) extend from the light control sheet 2. Similarly, the lateral direction is a direction perpendicular to the direction in which the electrode bands 11-1 and 11-2 extend from the light control sheet 2.

The sealing process is carried out at the four corners 3 of the light control sheet, at least at the edges 4-1 and 4-2 on both sides of the lower waterproof tape 4 and the end of the upper waterproof tape 5 on the light control sheet side. At the intersection with the edge 5-2, and at the intersection between the edge 4-2 of the lower waterproof tape 4 on the light control sheet side and the edge 5-1, 5-2 of the upper waterproof sheet 5. A feature of this process is that a resin sealing part 6 is formed in the gap to seal the gap with resin.

In the sealing process, liquid is applied to the gaps formed at the intersections of the edges 4-1, 4-2 of the lower waterproof tape 4 and the edges 5-1, 5-2 of the upper waterproof tape 5. Resin droplets can be formed using various printing methods or dispensers to fill gaps by capillary action. The printing method is not particularly limited, and examples thereof include screen printing, lithographic offset printing, intaglio offset printing, letterpress printing, and the like.

<Second embodiment>
A light control module according to a second embodiment of the present invention will be described using FIG. 2.

The second embodiment differs from the first embodiment in how the lower waterproof tape 4 and the upper waterproof tape 5 overlap. Accordingly, the locations where the resin sealing portions are formed differ.

In the second embodiment, as shown in FIG. 2, an upper waterproof tape 5 extending from the other adjacent side is attached on a lower waterproof tape 4 extending from one side. The lower waterproof tape 4 has its longitudinal end portion 9 covered with the upper waterproof tape 5.

For this reason, there will be cases where the resin sealing portion 6 required in the first embodiment becomes unnecessary. In the first embodiment, there is an intersection between the edge 4-2 of the lower waterproof tape 4 on the light control sheet side and the outer edge 5-1 of the upper waterproof tape 5. In the second embodiment, there is no intersection between the edge 4-2 of the lower waterproof tape 4 on the light control sheet side and the outer edge 5-1 of the upper waterproof tape 5, and no gap is formed. Therefore, there is no need to form a resin sealing part.
Other resin sealing parts 6 need to be formed in the second embodiment as well as in the first embodiment.

When attaching four waterproof tapes to the four sides of the light control sheet 2, they can be attached in various orders. For example, two lower waterproof tapes are configured by first attaching two waterproof tapes to opposite sides of the light control sheet 2 on the transparent support base material 1. Next, two upper waterproof tapes can be constructed by pasting two waterproof tapes on the remaining two opposing sides. At this time,
In the second embodiment, the upper waterproof tape is attached with the longitudinal end portion of the lower waterproof tape covered inside the width of the upper waterproof tape.

(Production method)
It can be manufactured by basically the same method as the first embodiment. The only difference is the part where the resin sealing part is formed.

<Third embodiment>
A light control module according to a third embodiment of the present invention will be described using FIG. 3.

The third embodiment differs from the first and second embodiments in how the lower waterproof tape 4 and the upper waterproof tape 5 overlap. Accordingly, the locations where the resin sealing portions are formed differ.

In the third embodiment, as shown in FIG. 3, the upper side of FIG. The lower side in FIG. 3 is provided with the other tip extending outside the upper tape 5, as in the second embodiment.

Therefore, on the side where the longitudinal end portion 9 of the lower waterproof tape 4 is covered by the upper waterproof tape 5, the edge portions 4-1, 4-2 of the lower waterproof tape 4 and the upper side A resin sealing part 6 is formed in a gap formed at the intersection of the waterproof tape 5 and the edge part 5-2 on the light control sheet side, by sealing the gap with resin.

Further, on the side where the longitudinal end portion 9 of the lower waterproof tape 4 extends outward from the upper waterproof tape 5, the end edges 4-1, 4- of the lower waterproof tape 4 are provided. 2 and the end edge 5-2 of the upper waterproof tape 5 on the light control sheet side, a resin sealing portion is formed in which the gap is sealed with resin. In addition, the gap formed at the intersection of the edge 4-2 of the lower waterproof tape 4 on the light control sheet side and the outer edge 5-1 of the upper waterproof tape 5 is filled with resin. A sealed resin sealing portion is formed.

When attaching four waterproof tapes to the four sides of the light control sheet 2, they can be attached in various orders. For example, two lower waterproof tapes are configured by first attaching two waterproof tapes to opposite sides of the light control sheet 2 on the transparent support base material 1. Next, two upper waterproof tapes can be constructed by pasting two waterproof tapes on the remaining two opposing sides. At this time,
The third embodiment is a combination of the first embodiment and the second embodiment.

(Production method)
It can be manufactured by basically the same method as the first and second embodiments. The only difference is the part where the resin sealing part is formed.

As explained above, according to the light control module of the present invention, the waterproof property of the light control sheet is improved by pasting waterproof tape on the edge of the rectangular light control sheet placed on the support base material. It has a secure configuration. Specifically, a waterproof sheet is attached to each side of a light control sheet. At the corner portion, an upper waterproof tape extending from the other adjacent side is attached on top of a lower waterproof tape extending from one side. In such a configuration, a gap may be formed between the edge of the lower waterproof tape and the upper waterproof tape attached from above. Since moisture and the like enter from the outside through the gap, the gap is sealed with resin. In this way, a light control module can be obtained by applying the waterproof tape to the edge of the light control sheet and sealing the gaps formed at the corners with resin. Therefore, the light control unit is easy to manufacture. In addition, there is no need to overlay multiple pieces of tape on the corner portions, and a flat and thin profile can be realized over the entire area of the light control sheet.

Moreover, according to the method for manufacturing a light control module of the present invention, the light control module of the present invention can be manufactured.

1... Transparent support base material 2... Light control sheet 3... Corner section (of the light control sheet) 4... Lower waterproof tape 4-1... (Outside of the lower waterproof tape) Edge portion 4-2 (on the side opposite to the light control sheet)... Edge portion 5 (on the light control sheet side of the lower waterproof tape)... Upper waterproof tape 5-1... Edge portion 5-2 (on the outside of the upper waterproof tape (opposite side to the light control sheet))... Edge portion 6 (on the light control sheet side of the upper waterproof tape)...Resin sealing portion 7... Gap 8... Corner tape 9... (Longitudinal direction of lower waterproof tape) tip 10, 10'... Light control module 11-1, 11-2... Electrode band

Claims (6)

A light control module comprising a transparent support base material, a rectangular light control sheet disposed on the transparent support base material, and a waterproof tape affixed to an edge of the light control sheet,
At the four corners of the light control sheet,
On top of the lower waterproof tape extending from one side, the upper waterproof tape extending from the other adjacent side is attached.
The lower waterproof tape has a longitudinal tip extending outward from the upper waterproof tape,
At least, the intersection of the edges on both sides of the lower waterproof tape and the edge on the light control sheet side of the upper waterproof tape, and the intersection between the edge on the light control sheet side of the lower waterproof tape and the upper waterproof tape. A light control module characterized in that a resin sealing part for sealing the gap with resin is formed in the gap formed at the intersection with the outer edge of the sheet. A light control module comprising a transparent support base material, a rectangular light control sheet disposed on the transparent support base material, and a waterproof tape affixed to an edge of the light control sheet,
At the four corners of the light control sheet,
On top of the lower waterproof tape extending from one side, the upper waterproof tape extending from the other adjacent side is attached.
The longitudinal tip of the lower waterproof tape is covered by the upper waterproof tape.
There is a resin sealing part that seals the gap with resin in the gap formed at the intersection of the edges on both sides of the lower waterproof tape and the edge on the light control sheet side of the upper waterproof tape. A light control module characterized by: A light control module comprising a transparent support base material, a rectangular light control sheet disposed on the transparent support base material, and a waterproof tape affixed to an edge of the light control sheet,
At the four corners of the light control sheet,
On top of the lower waterproof tape extending from one side, the upper waterproof tape extending from the other adjacent side is attached.
The lower waterproof tape has one of its longitudinal ends covered by the upper waterproof tape,
On the side where the longitudinal tip of the lower waterproof tape is covered by the upper waterproof tape, the edge of the lower waterproof tape on the light control sheet side and the edge of the upper waterproof tape on the light control sheet side. A resin sealing portion is formed in the gap formed at the intersection of the end edge portion and the edge portion, and the gap is sealed with resin.
On the side where the longitudinal end of the lower waterproof tape extends outward from the upper waterproof tape, the edge of the lower waterproof tape, the edge of the upper waterproof tape, A light control module characterized in that a resin sealing part is formed in a gap formed at the intersection of the two, and the gap is sealed with resin. A method for manufacturing a light control module according to claim 1, comprising:
a pasting step of arranging the rectangular light control sheet on the transparent support base material and pasting the waterproof tape on the edge of the light control sheet;
A resin-sealed portion is formed by sealing with a resin the gap formed at the intersection of the edge portions on both sides of the lower waterproof tape and the edge portions on both sides of the upper waterproof tape. It is equipped with a sealing process,
The pasting step includes, in the four corner parts of the light control sheet, at least the intersections of the edge parts on both sides of the lower waterproof tape and the edge part of the upper waterproof tape on the light control sheet side, and the lower side. This is a process of forming a resin sealing part to seal the gap with resin at the gap formed at the intersection of the edge of the waterproof tape on the light control sheet side and the edge of the upper waterproof sheet. A method for manufacturing a light control module characterized by: A method for manufacturing a light control module according to claim 2, comprising:
a pasting step of arranging the rectangular light control sheet on the transparent support base material and pasting the waterproof tape on the edge of the light control sheet;
A resin-sealed portion is formed by sealing the gap formed at the intersection of the edge portions on both sides of the lower waterproof tape and the edge portion of the upper waterproof tape on the light control sheet side with a resin. It is equipped with a sealing process to form a
The pasting step includes pasting the upper waterproof tape extending from the other adjacent side onto the lower waterproof tape stretching from one side at the four corner parts of the light control sheet. A method for manufacturing a light control module, characterized in that the lower waterproof tape is attached so that the tip in the longitudinal direction is covered with the upper waterproof tape. A method for manufacturing a light control module according to claim 3, comprising:
a pasting step of arranging the rectangular light control sheet on the transparent support base material and pasting the waterproof tape on the edge of the light control sheet;
the gap formed at the intersection between the edge portions on both sides of the lower waterproof tape and the edge portion of the upper waterproof tape on the light control sheet side; a sealing step of forming a resin-sealed portion by sealing with resin the gap formed at the intersection of the edge portion and the edge portion of the upper waterproof tape on the opposite side of the light control sheet; and,
In the pasting process, one of the ends of the lower waterproof tape in the longitudinal direction is pasted so that it is covered by the upper waterproof tape, and the other end is attached to the upper waterproof tape. A method for manufacturing a light control module, which involves attaching the tape so that it stretches outward from the tape.