JP7231097B1 - FILM, WILLED BODY, CONNECTED STRUCTURE AND METHOD FOR MANUFACTURING CONNECTED STRUCTURE - Google Patents

Abstract

A piece of adhesive film can be applied to various positions. A film (1) includes a long peeling film (2), a plurality of adhesive film pieces (3) provided on the peeling film (2) and separated from each other, and a plurality of adhesive film pieces (3) provided on the peeling film (2). a first adhesive film piece 101 and a second adhesive film piece 102 adjacent to each other with the non-adhesive region 4 interposed therebetween; It has a third adhesive film piece 103 and a fourth adhesive film piece 104 that are adjacent to each other with the non-adhesive region 4 interposed therebetween, and the first adhesive film piece 101 and the second adhesive film piece 102 are spaced apart. The distance and the separation distance between the third adhesive film piece 103 and the fourth adhesive film piece 104 are different. [Selection drawing] Fig. 2

Description

The present invention relates to a film, a roll, a connected structure, and a method for manufacturing the connected structure.

In recent years, devices such as smart phones, personal computers, earphones, smart watches, and wearable devices have become more functional, smaller, thinner, and more sophisticated in design. In addition, sensors, parts, substrates, etc. mounted on devices have become highly functional and complex. Along with this, materials with low heat resistance are used for some or all of sensors, parts, substrates, etc., or sensors, parts, substrates, etc. with low heat resistance are mounted on devices, or sensors, parts, substrates, etc. with low heat resistance are used. There are increasing cases where another member is connected at a high temperature to a position close to a substrate or the like. Note that "to connect" includes meanings such as bonding, mounting, and mounting. As a result, there is a demand for a technique for connecting other members only to one or more predetermined positions of sensors, parts, substrates, or the like. Moreover, the positions at which other members are connected to sensors, components, substrates, etc. vary depending on the type of device.

WO2018/066411

Therefore, using a film in which a plurality of adhesive film pieces are provided on a release film as described in Patent Document 1, adhesive film pieces are applied only to one or more predetermined positions such as sensors, parts, substrates, etc. It can be pasted. However, in view of the technical common sense in this technical field, which attempts to effectively utilize films to reduce costs, the plurality of adhesive film pieces are arranged at regular intervals and in close contact. When a plurality of adhesive film pieces are arranged closely at equal intervals in this way, it is not easy to stick the adhesive film pieces at various positions.

Accordingly, it is an object of one aspect of the present invention to provide a film, a roll, a connection structure, and a method for manufacturing the connection structure, which can adhere adhesive film pieces to various positions.

A method for manufacturing a film according to one aspect of the present invention includes removing at least one of a plurality of adhesive film pieces from an original film in which a plurality of adhesive film pieces are provided on a long release film. A removal step is provided to remove the adhesive film piece.

In this film manufacturing method, the number of adhesive film pieces provided on the release film can be reduced by removing the adhesive film pieces to be removed from the original film. By changing the position and number of the adhesive film pieces to be removed, the arrangement of the adhesive film pieces provided on the release film can be changed. This makes it possible to produce a film to which adhesive film strips can be applied at various locations. In addition, for example, when there is a defective adhesive film piece in the original film, the defective adhesive film piece is removed by removing the defective adhesive film piece as an adhesive film piece to be removed. Films can be produced.

By the way, by preparing a plurality of dies for punching the adhesive film pieces, the arrangement of the adhesive film pieces provided on the release film can be changed. However, there is a problem that preparing a plurality of molds increases the cost. In contrast, in this film manufacturing method, by removing the adhesive film pieces to be removed from the original film, the arrangement of the adhesive film pieces provided on the release film can be changed, so a plurality of molds are prepared. The cost can be suppressed compared to the case.

Alternatively, a plurality of adhesives can be provided at arbitrary positions on the release film using a dispenser that drops liquid adhesives. However, liquid adhesives have problems such as difficulty in forming a high-aspect structure, easy rounding of edges due to surface tension, and deterioration of dimensional accuracy due to seepage. On the other hand, in this film manufacturing method, since the adhesive film piece to be removed among the plurality of adhesive film pieces provided on the release film is removed, these problems can be resolved.

In the removing step, the adhesive film piece to be removed may be removed by transferring the adhesive film piece to be removed from the original film to an adherend that can be brought into contact with and separated from the original film. In this film manufacturing method, the adhesive film piece to be removed can be appropriately removed by transferring the adhesive film piece to be removed from the original film to the adherend.

In the removing step, the first receiving roller may be used as the adherend, and the piece of the adhesive film to be removed that has been transferred to the first receiving roller may be transferred to the second receiving roller that does not come into contact with the original film. In this film manufacturing method, since the adhesive film piece to be removed that has been transferred to the first receiving roller is transferred to the second receiving roller, the adhesive film piece to be removed that has been transferred to the first receiving roller is used as the original. It can be suppressed to be returned to the film.

In the removing step, an adherend tape may be used as the adherend, and the adherend tape may be brought into contact with and separated from the original film while being transported. In this film manufacturing method, since the adhesive tape is transported while being brought into contact with and separated from the original film, it is possible to prevent the adhesive film piece to be removed that has been transferred to the adhesive tape from being returned to the original film.

The method may further include a detecting step for detecting the adhesive film piece to be removed, and the removing step may remove the adhesive film piece to be removed detected in the detecting step from the original film. In this film manufacturing method, since the adhesive film piece to be removed is detected and the detected adhesive film piece to be removed is removed, the removal of the adhesive film piece to be removed can be automated.

In the detecting step, an adhesive film piece at a predetermined position among the plurality of adhesive film pieces may be detected as the adhesive film piece to be removed. In this film manufacturing method, an adhesive film piece provided at a predetermined position among the plurality of adhesive film pieces is detected and removed as an adhesive film piece to be removed. can be patterned. This makes it possible, for example, to produce a film in which a plurality of pieces of adhesive film can be applied in the same pattern arrangement to a plurality of members.

In the detection step, when the plurality of adhesive film pieces are divided into a plurality of adhesive film piece groups arranged in the longitudinal direction of the release film, the adhesive film piece at the same position in the plurality of adhesive film piece groups is detected. It may be detected as a piece of adhesive film to be removed. In this film manufacturing method, adhesive film pieces at the same position in a plurality of adhesive film piece groups of the original film are detected and removed as adhesive film pieces to be removed. The placement of the adhesive film strips can be the same. This makes it possible, for example, to produce a film in which a plurality of pieces of adhesive film can be applied in the same pattern arrangement to a plurality of members.

By the way, by forming a plurality of adhesive film pieces provided in each adhesive film piece group by punching with a die, the arrangement of the adhesive film pieces in each adhesive film piece group can be the same. However, if one adhesive film piece group is long in the longitudinal direction of the release film, it is necessary to prepare a large mold, which raises the problem of increased cost. In contrast, in this film manufacturing method, regardless of how long one adhesive film piece group is in the longitudinal direction of the release film 2, each adhesive film piece can be removed simply by removing the adhesive film piece to be removed. The placement of the adhesive film strips in the group can be the same. Therefore, the cost can be suppressed compared to the case of preparing a mold.

In the detecting step, a defective adhesive film piece among the plurality of adhesive film pieces may be detected as the adhesive film piece to be removed. In this film manufacturing method, defective adhesive film pieces are detected and removed as adhesive film pieces to be removed, so that a film free of defective adhesive film pieces can be manufactured.

By the way, a defective adhesive film piece or the vicinity of a defective adhesive film piece is marked by an inkjet or laser mark or the like so that the defective adhesive film piece is not pasted relying on the mark. can also However, marking by an inkjet or laser mark, for example, causes problems such as problems with foreign substances caused by ink jet ink, scorching by laser, problems with foreign substances caused by dust generation, and damage to the release film. In contrast, in this film manufacturing method, defective adhesive film pieces are detected and removed as adhesive film pieces to be removed, so these problems can be resolved.

An original film manufacturing process for manufacturing an original film may be further provided. In this film manufacturing method, by including the original film manufacturing process for manufacturing the original film, the arrangement of the plurality of adhesive film pieces in the original film can be freely set.

The original film manufacturing process includes an adhesive film layer forming process of forming an adhesive film layer on the entire surface of the release film, and cutting the adhesive film layer along outlines forming outlines of a plurality of adhesive film pieces. An adhesive film layer cutting step, and a blank peeling step of peeling off a blank portion of the adhesive film layer other than the plurality of adhesive film pieces from the release film along the cut outline. may In this film manufacturing method, an adhesive film layer is formed on the entire surface of the release film, the adhesive film layer is cut along the contour line, and the blank portion is peeled off from the release film along the cut contour line. Thereby, a plurality of adhesive film pieces can be easily provided on the release film.

The plurality of adhesive film pieces may be electrically conductive. In this film manufacturing method, since the plurality of adhesive film pieces are conductive, the members connected via the adhesive film pieces can be electrically connected.

A film according to one aspect of the present invention includes a long release film, a plurality of adhesive film pieces provided on the release film and separated from each other, and a plurality of adhesive film pieces not provided on the release film. a non-adhesive region, wherein the plurality of adhesive film pieces are separated from each other by a first adhesive film piece and a second adhesive film piece adjacent to each other via the non-adhesive region; a third adhesive film piece and a fourth adhesive film piece adjacent to each other, wherein a separation distance between the first adhesive film piece and the second adhesive film piece and The separation distance from the agent film piece is different.

In this film, since the distance between the first adhesive film piece and the second adhesive film piece and the distance between the third adhesive film piece and the fourth adhesive film piece are different, a plurality of adhesives The adhesive film strips can be applied in a wider variety of positions than if the film strips were all spaced the same distance apart.

The first adhesive film piece and the second adhesive film piece may be longitudinally adjacent to the release film, and the third adhesive film piece and the fourth adhesive film piece may be longitudinally adjacent. In this film, the first adhesive film piece and the second adhesive film piece are adjacent to each other in the longitudinal direction, and the third adhesive film piece and the fourth adhesive film piece are adjacent to each other in the longitudinal direction. Adhesive film strips can be applied at various locations in the direction.

The first adhesive film piece and the second adhesive film piece may be adjacent in the width direction of the release film, and the third adhesive film piece and the fourth adhesive film piece may be adjacent in the width direction. In this film, the first adhesive film piece and the second adhesive film piece are adjacent in the width direction of the release film, and the third adhesive film piece and the fourth adhesive film piece are adjacent in the width direction. , the adhesive film strips can be applied at various positions in the width direction.

The non-adhesive region may have a first region in which adjacent adhesive film strips are separated by a greater distance than the adhesive film strips. In this film, since the non-adhesive region has a first region in which the distance between adjacent adhesive film pieces is longer than that of the adhesive film pieces, the adhesive film pieces can be applied to a wider variety of positions. .

The non-adhesive regions may have second regions where adjacent adhesive film strips are spaced less apart than the adhesive film strips. In this film, since the non-adhesive region has a second region where the distance between adjacent adhesive film pieces is shorter than that of the adhesive film pieces, the adhesive film pieces can be pasted at more diverse positions. .

The non-adhesive region may have a third region in which adjacent adhesive film strips are spaced less apart than in the first region. In this film, the non-adhesive regions have third regions in which the distance between adjacent adhesive film pieces is less than the distance between adjacent adhesive film pieces in the first region, thereby providing more diverse locations of adhesive. Film strips can be attached.

The separation distance between the first adhesive film piece and the second adhesive film piece is equal to the first adhesive film piece and the second adhesive film piece in the separation direction of the first adhesive film piece and the second adhesive film piece. may be longer than the maximum length of In this film, the separation distance between the first adhesive film piece and the second adhesive film piece is the first adhesive film piece and the second adhesive film piece in the separation direction of the first adhesive film piece and the second adhesive film piece. longer than the maximum length of the adhesive film strip. For this reason, the first adhesive film piece and the second adhesive film piece in the separation direction of the first adhesive film piece and the second adhesive film piece are removed without sticking the adhesive film piece between the first adhesive film piece and the second adhesive film piece. The first adhesive film piece and the second adhesive film piece can be attached at a position spaced apart from the maximum length of the adhesive film piece and the second adhesive film piece.

The separation distance between the third adhesive film piece and the fourth adhesive film piece is equal to the third adhesive film piece and the fourth adhesive film piece in the separation direction of the third adhesive film piece and the fourth adhesive film piece. may be shorter than the maximum length of In this film, the separation distance between the third adhesive film piece and the fourth adhesive film piece is the third adhesive film piece and the fourth adhesive film piece in the separation direction of the third adhesive film piece and the fourth adhesive film piece. shorter than the maximum length of the adhesive film strip. For this reason, the third adhesive film piece in the separation direction of the third adhesive film piece and the fourth adhesive film piece is not attached between the third adhesive film piece and the fourth adhesive film piece. A third adhesive film piece and a third adhesive film piece can be applied closer than the maximum length of the adhesive film piece and the fourth adhesive film piece.

The distance between the third adhesive film piece and the fourth adhesive film piece may be less than the distance between the first adhesive film piece and the second adhesive film piece. In this film, the distance between the third adhesive film piece and the fourth adhesive film piece is shorter than the distance between the first adhesive film piece and the second adhesive film piece, so that the film can be placed in a wider variety of positions. Adhesive film strips can be applied.

A half-cut may be formed in the release film, the half-cut being formed in the non-adhesive area between the first adhesive film piece and the second adhesive film piece. In this film, a half-cut is formed in the non-adhesive area between a first adhesive film piece and a second adhesive film piece. Thus, for example, when removing another adhesive film piece provided between the first adhesive film piece and the second adhesive film piece during the production of the film, the adhesive film piece was removed. It is possible to determine whether it is a trace or not.

The third adhesive film piece and the fourth adhesive film piece are adjacent to each other in the longitudinal direction of the release film, and the separation distance between the third adhesive film piece and the fourth adhesive film piece in the longitudinal direction is 20 mm or less. There may be. In this film, the third adhesive film piece and the fourth adhesive film piece are adjacent to each other in the longitudinal direction, and the distance between the third adhesive film piece and the fourth adhesive film piece in the longitudinal direction is 20 mm or less. . For this reason, it is possible to shorten the transport distance of the film when sticking the third adhesive film piece and the fourth adhesive film piece, and to make effective use of the film to achieve cost reduction.

The plurality of adhesive film pieces may form a plurality of adhesive film piece groups arranged in the longitudinal direction of the release film, and the arrangement of the adhesive film pieces may be the same in the plurality of adhesive film piece groups. . In this film, since the arrangement of the adhesive film pieces is the same for a plurality of groups of adhesive film pieces, the adhesive film pieces can be efficiently attached to members having the same position for attaching the adhesive film pieces. can be done.

The separation distance between adhesive film piece groups adjacent to each other in the longitudinal direction of the release film may be 20 mm or less. In this film, the separation distance between adhesive film piece groups adjacent to each other in the longitudinal direction of the release film is 20 mm or less. Therefore, when adhering the adjacent adhesive film piece group to another member, the transport distance of the film can be shortened, and the film can be effectively used to reduce the cost.

The plurality of adhesive film pieces may be spaced apart from the edge of the release film in the width direction of the release film. In this film, since the plurality of adhesive film pieces are separated from the edge of the release film in the width direction of the release film, when the end of the release film interferes with another member, the adhesive film is separated from the release film. It is possible to suppress peeling of the pieces.

A plurality of adhesive film pieces may be arranged in a line in the longitudinal direction of the release film. In this film, since a plurality of adhesive film pieces are arranged in a row in the longitudinal direction of the release film, the adhesive film pieces can be easily attached.

At least some of the plurality of adhesive film pieces may have holes. In this film, since at least some of the plurality of adhesive film pieces have holes, for example, the adhesive film piece can be appropriately applied to a portion having a central portion where the adhesive film piece should not be applied. can be attached.

The multiple adhesive film pieces may have the same shape. In this film, since the plurality of adhesive film pieces have the same shape, the adhesive film pieces can be efficiently attached to a plurality of adhesive surfaces having the same shape.

The adhesive film strip may be electrically conductive. In this film, since the adhesive film pieces are conductive, the two members connected via the adhesive film pieces can be electrically connected.

The adhesive film strip may contain conductive particles. In this film, since the adhesive film pieces contain conductive particles, anisotropic conductivity can be imparted to the adhesive film pieces.

A wound body according to one aspect of the present invention includes any of the films described above and a core around which the film is wound. In this wound body, since any one of the films described above is wound around the winding core, the adhesive film pieces can be attached to various positions.

A connection structure according to one aspect of the present invention includes a first member having a first adhesive surface, a second member having a second adhesive surface, and any of the above connecting the first adhesive surface and the second adhesive surface. and a piece of adhesive film. In this connection structure, since the first member and the second member are connected by any of the adhesive film pieces described above, even if the positions of the first adhesive surface and the second adhesive surface are diverse, A connection structure can be obtained in which the adhesive film pieces are appropriately attached to the first adhesive surface and the second adhesive surface.

A method for manufacturing a bonded structure according to one aspect of the present invention includes a preparation step of preparing any one of the films described above, and a connecting step of connecting with the second adhesive surface. In this connection structure manufacturing method, the first adhesive surface of the first member and the second adhesive surface of the second member are connected via the adhesive film piece of any of the films described above. Even if the positions of the surface and the second adhesive surface are varied, it is possible to produce a connecting structure with the adhesive film strips appropriately applied to the first adhesive surface and the second adhesive surface.

Adhesive film strips can be applied in a variety of locations according to the present invention.

FIG. 1 is a flow chart showing a film manufacturing method according to this embodiment. FIG. 2 is a plan view showing an example of part of the film according to this embodiment. FIG. 3 is a cross-sectional view showing an example of a cross section taken along line III-III shown in FIG. FIG. 4 is a cross-sectional view showing an example of a cross section along line III-III shown in FIG. FIG. 5 is a cross-sectional view showing an example of a cross section taken along line III-III shown in FIG. FIG. 6(a), FIG. 6(b), and FIG. 6(c) are plan views showing part of another example of the film. FIG. 7 is a flow chart showing the original film manufacturing process shown in FIG. 8(a), 8(b), 8(c), and 8(d) are cross-sectional views for explaining the original film manufacturing process shown in FIG. 9(a), 9(b), 9(c), and 9(d) are perspective views for explaining the original film manufacturing process shown in FIG. 10(a) and 10(b) are plan views for explaining the removal step shown in FIG. FIG. 11 is a schematic diagram showing a removing device used in the first removing method. FIG. 12 is a schematic diagram showing a removing device used in the second removing method. FIG. 13 is a schematic diagram showing a removal device used in the third removal method. FIG. 14 is a schematic diagram showing a removal device used in the fourth removal method. FIG. 15 is a schematic diagram showing a removal device used in the fifth removal method. FIG. 16 is a schematic diagram showing a removing device used in the sixth removing method. FIG. 17 is a plan view showing an example of part of the original film. FIG. 18 is a plan view showing an example of part of the film. FIG. 19 is a plan view showing an example of part of the film. FIG. 20 is a plan view showing an example of part of the film. FIG. 21 is a plan view showing an example of part of the film. FIG. 22(a) is a plan view showing an example of an original film, and FIG. 22(b) is a plan view showing an example of a film. FIG. 23 is a plan view showing an example of part of the film. FIG. 24 is a perspective view showing the wound body according to this embodiment. FIG. 25 is a cross-sectional view showing a connection structure according to this embodiment. FIG. 26 is a flow chart showing a method for manufacturing a connection structure according to this embodiment. FIG. 27 is a flow chart showing the film manufacturing process shown in FIG. FIG. 28 is a schematic process diagram for explaining the connection process shown in FIG. FIG. 29 is a plan view showing an example of part of the film. FIG. 30 is a plan view showing an example of part of the film. FIG. 31 is a plan view showing an example of part of the original film. FIG. 32 is a plan view showing an example of part of the film.

Preferred embodiments of the present invention will be described in detail below with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and redundant explanations are omitted. Also, in the drawings, dimensional ratios and the like are appropriately changed in order to make the explanation easier to understand.

[Film manufacturing method]
As shown in FIGS. 1 and 2, the method for manufacturing a film is a method for manufacturing a film 1. FIG. The film 1 includes a long (tape-shaped) release film 2 , a plurality of adhesive film pieces 3 provided on the release film 2 and separated from each other, and a plurality of adhesive film pieces 3 on the release film 2 . and a non-adhesive area 4 that is not provided.

(Release film)
The release film 2 is attached to the adhesive film pieces 3 to support the plurality of adhesive film pieces 3 . For example, polyethylene terephthalate (PET), polyethylene, polypropylene, or the like can be used as the material of the release film 2 . The release film 2 may contain any filler. Moreover, the surface of the release film 2 may be subjected to release treatment, plasma treatment, antistatic treatment, or the like.

By the way, when the adhesive film piece 3 is adhered to the adhesive surface (not shown) of the adhesion target (not shown) with high precision, it is preferable to specify the position of the adhesive film piece 3 on the film 1 . For example, the release film 2 may have an alignment mark for specifying the position of the adhesive film piece 3 on the film 1, and the position of the adhesive film piece 3 may be specified based on this alignment mark. Alternatively, the position of the adhesive film piece 3 on the film 1 may be specified by detecting a specific arrangement of the adhesive film piece 3 on the film 1 or the like. Therefore, it is conceivable to detect the position of the adhesive film piece 3 on the film 1 by the imaging device 33 (see FIG. 28). However, considering that the adhesive film piece 3 is attached to the adhesive surface after that, it is preferable to dispose the imaging device 33 on the side opposite to the adhesive film piece 3 with respect to the release film 2 .

Therefore, the peeling film 2 may have optical transparency so that the position of the adhesive film piece 3 can be detected from the peeling film 2 side by the imaging device 33 .

In this case, the transmittance of the release film 2 can be 15% or more and 100% or less, preferably 15% or more and 99% or less, and more preferably 16% or more and 98% or less.

The transmittance of the release film 2 can be measured as follows. A release film cut into a square of 50 mm×50 mm is set in a haze meter (for example, NDH-5000 manufactured by Nippon Denshoku Industries Co., Ltd.), and the total light transmittance is measured. Then, this measurement result is used as the transmittance of the release film 2 .

The haze value of the release film 2 can be 3% or more and 100% or less, preferably 3% or more and 99% or less, and more preferably 4% or more and 99% or less.

The haze value of the release film 2 can be measured as follows. A release film cut into a square of 50 mm×50 mm is set in a haze meter (for example, NDH-5000 manufactured by Nippon Denshoku Industries Co., Ltd.) to measure the haze value. Then, this measurement result is used as the haze value of the release film 2 .

(adhesive film piece)
The adhesive film piece 3 connects the first member and the second member to be adhered. As shown in FIGS. 3-5, the adhesive film piece 3 has a film-like adhesive 6 .

As the adhesive 6 forming the adhesive film piece 3, for example, a thermoplastic resin, a thermosetting resin, a mixed system of a thermoplastic resin and a thermosetting resin, or a photocurable resin is used. As the thermoplastic resin, for example, a styrene resin system or a polyester resin system is used. As the thermosetting resin, for example, a epoxy resin system or a silicone resin system is used. When using a thermoplastic resin or a thermosetting resin, heating and pressurization are usually required. In the case of a thermoplastic resin, the resin is made to flow to obtain adhesion to the adherend, and in the case of a thermosetting resin, the resin further undergoes a curing reaction. In addition, photocurable resins do not require heating for curing, and are therefore useful when connection at low temperatures is required.

In addition, from the viewpoint of minimizing the influence of heat on areas other than the connecting portion, for example, the adhesive 6 forming the adhesive film piece 3 has a curing degree of 230° C. 30° C. by differential scanning calorimetry (DSC). 80% or more at 210°C for 30 seconds, 80% or more at 190°C for 30 seconds, 80% or more at 170°C for 30 seconds, 80% at 150°C for 30 seconds As described above, the resin may be 80% or more under the condition of 130° C. for 30 seconds, or 80% or more under the condition of 100° C. for 30 seconds. Optimum resin properties can be selected according to the reliability level required for the final device. The degree of curing in differential scanning calorimetry can be measured with a differential scanning calorimeter (for example, DSC Q-1000 manufactured by TA Instruments).

The adhesive film piece 3 may be conductive or non-conductive. For example, the adhesive film piece 3 may be formed by a conductive adhesive film or may be formed by a non-conductive adhesive film, with conductive adhesive regions and non-conductive adhesive regions. It may be formed by a hybrid adhesive film having a Alternatively, the adhesive film piece 3 may be composed of two layers, a first adhesive layer and a second adhesive layer, wherein the first adhesive layer, the second adhesive layer and the third adhesive layer It may be composed of three or more layers. The first adhesive layer, the second adhesive layer and the third adhesive layer may be conductive or non-conductive.

The conductive adhesive film forming the adhesive film piece 3 may have, for example, isotropic conductivity or anisotropic conductivity. For example, as shown in FIG. 4, by containing conductive particles 7, it is possible to have anisotropic conductivity. The conductive particles 7 are contained in the adhesive 6, for example.

As the conductive particles 7, metal particles such as Au, Ag, Ni, Cu, Pd, solder, and carbon particles are used. Alternatively, the conductive particles 7 may be made of transition metals such as Ni and Cu coated with noble metals such as Au, Ag and Pd. Alternatively, the conductive particles 7 may be those in which a conductive layer is formed on the surfaces of non-conductive particles such as glass, ceramics, plastics, etc. by coating the surfaces of the non-conductive particles with a conductive material. The conductive particles 7 may also have outermost layers made of precious metals, hot-melt metal particles, or the like.

The hybrid adhesive film forming the adhesive film piece 3 is, for example, as shown in FIG. It can be anything. The conductive adhesive regions 8 can, for example, contain conductive particles 7, similar to a conductive adhesive film.

The shape of the adhesive film piece 3 is not particularly limited, and various shapes can be used. For example, the shape of the adhesive film piece 3 includes circular shapes such as perfect circles and ovals, polygonal shapes such as triangles and squares, star shapes, and complex shapes such as various marks. A square, a rectangle, a trapezoid, etc. are mentioned as a quadrangle.

Further, the adhesive film piece 3 may be formed with holes 3a as shown in FIGS. 6(a) to 6(c). The hole 3a is formed by hollowing (punching) a part of the adhesive film piece 3. As shown in FIG. The shape, size, position, number, etc. of the holes 3a are not particularly limited. For example, the hole 3 a may have a similar shape to the adhesive film piece 3 or may not have a similar shape to the adhesive film piece 3 . Examples of the shape of the hole 3a include circles such as perfect circles and ovals, polygons such as triangles and squares, star shapes, and complex shapes such as various marks. A square, a rectangle, a trapezoid, etc. are mentioned as a quadrangle. The position of the hole 3 a may be the central portion of the adhesive film piece 3 or the end portion of the adhesive film piece 3 . The number of holes 3a formed in one adhesive film piece 3 may be one, or two or more. When a plurality of holes 3a are formed in one adhesive film piece 3, the shape, size, etc. of each hole 3a may be the same or different. The adhesive film piece 3 shown in FIG. 6( a ) has a rectangular outer shape, and a rectangular hole 3 a similar to the outer shape of the adhesive film piece 3 is formed in the central portion of the adhesive film piece 3 . As shown in FIG. 6(b), the adhesive film piece 3 has a circular outer shape, and a circular hole 3a similar to the outer shape of the adhesive film piece 3 is formed in its central portion. The adhesive film piece 3 shown in FIG. 6(c) has a rectangular outer shape, and a circular rectangular hole 3a is formed in the central portion thereof.

The film manufacturing method includes an original film manufacturing step (S1) and a removing step (S2) performed after the original film manufacturing step (S1).

(Original film manufacturing process)
In the raw film manufacturing step (S1), a raw film is manufactured in which a plurality of adhesive film pieces are provided on a long release film.

As shown in FIGS. 7 to 9, the original film manufacturing step (S1) includes an adhesive film layer forming step (S11) and an adhesive film layer cutting step (S12) performed after the adhesive film layer forming step (S11). ) and a blank peeling step (S13) performed after the adhesive film layer cutting step (S12).

In the adhesive film layer forming step (S11), first, a release film 2 is prepared as shown in FIGS. 8(a) and 9(a). Then, as shown in FIGS. 8(b) and 9(b), an adhesive film layer 3A is formed on the entire surface of the release film 2. Next, as shown in FIG. The adhesive film layer 3A is a layer that forms a plurality of adhesive film pieces 3. As shown in FIG. The adhesive film layer 3A contains an adhesive 6 and conductive particles 7, for example. The adhesive 6 and conductive particles 7 forming the adhesive film layer 3A are the same as the adhesive 6 and conductive particles 7 forming the adhesive film piece 3 described above.

In the adhesive film layer cutting step (S12), as shown in FIGS. 8(c) and 9(c), the adhesive film layer 3A formed on the peeling film 2 is applied to the original film 5 by a plurality of bonding processes. The agent film piece 3 is cut along the contour line 3B forming the contour. As a result, the adhesive film layer 3A is separated into an inner portion 3A1 located inside the outline 3B and a plurality of blank portions 3A2 located outside the outline 3B. The inner portion 3A1 is a portion that becomes a plurality of adhesive film pieces 3 provided on the original film 5. As shown in FIG. The blank portion 3A2 is a portion other than the plurality of adhesive film pieces 3 provided on the original film 5. As shown in FIG. The adhesive film layer 3A is cut, for example, by pressing the adhesive film layer 3A against a roll cutter having a cutting edge formed on the outer peripheral surface to cut the release film 2 in half. Half-cutting the release film 2 means cutting the surface of the release film 2 on the side of the adhesive film layer 3A so that the surface of the release film 2 opposite to the adhesive film layer 3A is not cut. For this reason, on the surface of the peeling film 2 on the side of the adhesive film layer 3A, cuts corresponding to the outlines of the plurality of adhesive film pieces 3 provided on the original film 5 are formed. This makes it possible to easily cut the adhesive film layer 3A along the contour line 3B even if the adhesive film piece 3 has a complicated shape, a fine shape, or the like.

In the blank peeling step (S13), as shown in FIGS. 8(d) and 9(d), the blank portion 3A2 of the adhesive film layer 3A is peeled off from the release film 2 along the cut outline 3B. . The blank portion 3A2 is peeled off, for example, by sticking an adhesive tape to the blank portion 3A2 and pulling the adhesive tape to peel off the blank portion 3A2 from the release film 2. FIG. Then, the inner portion 3A1 remaining on the release film 2 becomes a plurality of adhesive film pieces 3 provided on the original film 5. As shown in FIG. As a result, the original film 5 having the multiple adhesive film pieces 3 provided on the release film 2 is manufactured.

The original film 5 thus manufactured is stored and transported as a roll 10 (see FIGS. 11 to 16) wound around a roll core (not shown), and then subjected to a removal step (S2). Taken over. Note that the original film 5 may be taken over to the removal step (S2) without being wound as the wound body 10. FIG.

(Removal process)
As shown in FIGS. 10(a) and 10(b), in the removing step (S2), at least one of the plurality of adhesive film pieces 3, which is an adhesive film piece 3Z to be removed, is removed from the original film 5. to remove Thereby, the film 1 is manufactured. In the film 1, a half-cut 2A corresponding to the outer shape of the adhesive film piece 3Z to be removed is formed in the non-adhesive region 4 of the release film 2 as a trace of removal of the adhesive film piece 3Z to be removed. .

Which adhesive film piece 3 among the plurality of adhesive film pieces 3 provided on the original film 5 is to be the adhesive film piece to be removed is not particularly limited. For example, among the plurality of adhesive film pieces 3 provided on the original film 5, the adhesive film piece 3 at a position different from the adhesive surface (not shown) of the adhesive object (not shown) is removed. It can be cut into pieces. Further, among the plurality of adhesive film pieces 3 provided on the original film 5, the defective adhesive film piece 3 may be used as the adhesive film piece to be removed.

A method for removing the adhesive film piece 3Z to be removed from the original film 5 is not particularly limited, but there are, for example, a roller removing method using a roller and a tape removing method using a tape.

Moreover, the removal of the adhesive film piece to be removed from the original film 5 may be performed manually or automatically. When the adhesive film piece to be removed from the original film 5 is automatically removed, for example, a detection step for detecting the adhesive film piece to be removed is performed, and in the removal step (S2), the removal detected in this detection step is detected. The target adhesive film piece may be removed from the original film 5 .

Here, as an example of a method of removing the adhesive film piece 3Z to be removed from the original film 5, the following six removal methods will be described.

(First removal method)
In the first removing method, the adhesive film piece 3Z to be removed is removed from the original film 5 using a removing device 20A shown in FIG.

A removing device 20A shown in FIG. The unwinding shaft 21 is a rotatable shaft on which the roll 10 around which the original film 5 is wound is set. The take-up shaft 22 is a rotatable shaft that takes up the raw film 5 unwound from the roll 10 . At least one of the unwinding shaft 21 and the winding shaft 22 is rotationally driven by a rotational driving device (not shown) such as a motor. The first adhesion roller 23 is a rotatable adherend to which the adhesive film piece 3Z to be removed from the original film 5 is transferred. The first attachment roller 23 can come into contact with and separate from the original film 5 . That is, the first receiving roller 23 can come into contact with and separate from the conveying path of the original film 5 from being unwound from the wound body 10 set on the unwinding shaft 21 to being wound on the winding shaft 22. It has become. The first receiving roller 23 can be brought into contact with and separated from the original film 5 by being moved by a driving mechanism (not shown). The second receiving roller 24 is an adherend to which the removal target adhesive film piece 3Z transferred to the first receiving roller 23 is transferred by contacting or coming close to the first receiving roller 23 . The second attachment roller 24 is arranged so as not to come into contact with the original film 5 . The second receiving roller 24 is movable integrally with the first receiving roller 23 or independently of the first receiving roller 23 in the contact/separation direction with respect to the original film 5 by a driving mechanism (not shown). may

In the first removal method, the wound body 10 around which the original film 5 is wound is set on the unwinding shaft 21, and the winding core 14 (see FIG. 24) on which the film 1 is wound is set on the winding shaft 22. do. Then, the unwinding shaft 21 and the winding shaft 22 are rotated to wind the original film 5 unwound from the roll 11 around the winding core 14 set on the winding shaft 22 . At this time, the first receiving roller 23 is kept away from the original film 5, and when the adhesive film piece 3Z to be removed arrives, the first receiving roller 23 is brought close to the original film 5 to remove the adhesive film to be removed. Make contact with piece 3Z. As a result, the adhesive film piece 3Z to be removed is transferred from the original film 5 to the first receiving roller 23 . Then, when the adhesive film piece 3Z to be removed is transferred to the first attachment roller 23, the first attachment roller 23 is separated from the original film 5. As shown in FIG. As a result, the adhesive film piece 3Z to be removed is removed from the original film 5. As shown in FIG. Also, the adhesive film piece 3Z to be removed that has been transferred to the first receiving roller 23 is transferred from the first receiving roller 23 to the second receiving roller 24 .

(Second removal method)
In the second removing method, the adhesive film piece 3Z to be removed is removed from the original film 5 using a removing device 20B shown in FIG.

A removing device 20B shown in FIG. 12 is basically the same as the removing device 20A shown in FIG. 11 is different from the removing device 20A shown in FIG. Therefore, only the points different from the removing apparatus 20A shown in FIG. 11 will be described below, and the explanation of the points similar to the removing apparatus 20A shown in FIG. 11 will be omitted.

A removing device 20B shown in FIG. The adherend tape 25 is a tape-like adherend to which the adhesive film piece 3Z to be removed is transferred from the original film 5 . The adherend tape 25 can be brought into contact with and separated from the original film 5 . In other words, the adherend tape 25 can come into contact with and separate from the conveying path of the original film 5 from being unwound from the wound body 10 set on the unwinding shaft 21 to being wound on the winding shaft 22 . ing. The adherend tape 25 can be brought into contact with and separated from the original film 5 by being moved by a driving mechanism (not shown). Also, the adherend tape 25 is conveyed by the tape conveying mechanism 26 . The tape conveying mechanism 26 conveys the adherend tape 25 so that the adherend tape 25 is always in contact with the original film 5 on the new surface. The tape conveying mechanism 26 includes, for example, an unwinding shaft 28 on which a roll 27 of the adherend tape 25 is set and feeds the adherend tape 25 from the roll 27 , and an adherend tape unwound from the roll 27 . A pressure roller 29 for pressing the tape 25 against the raw film 5 side, and a winding shaft 30 for winding the adherend tape 25 unwound from the roll 27 are provided.

In the second removal method, the wound body 10 around which the original film 5 is wound is set on the unwinding shaft 21 , and the winding core 14 on which the film 1 is wound is set on the winding shaft 22 . Then, the unwinding shaft 21 and the winding shaft 22 are rotated to wind the original film 5 unwound from the roll 11 around the winding core 14 set on the winding shaft 22 . At this time, the adhering tape 25 is separated from the original film 5, and when the adhesive film piece 3Z to be removed arrives, the adhering tape 25 is brought close to the original film 5 and comes into contact with the adhesive film piece 3Z to be removed. Let As a result, the adhesive film piece 3Z to be removed is transferred from the original film 5 to the adherend tape 25. As shown in FIG. Then, when the adhesive film piece 3Z to be removed is transferred to the adhesion tape 25, the adhesion tape 25 is separated from the original film 5. As shown in FIG. As a result, the adhesive film piece 3Z to be removed is removed from the original film 5. As shown in FIG. Then, the adhesive tape 25 is transported by the tape transport mechanism 26 so that the new surface of the adhesive tape 25 can be brought into contact with the next coming adhesive film piece 3Z to be removed.

(Third removal method)
In the third removing method, the adhesive film piece 3Z to be removed is removed from the original film 5 using a removing device 20C shown in FIG.

A removing device 20C shown in FIG. 13 is basically the same as the removing device 20A shown in FIG. 11, but differs from the removing device 20A shown in FIG. 11 in that it further includes a sensor. Therefore, only the points different from the removing apparatus 20A shown in FIG. 11 will be described below, and the explanation of the points similar to the removing apparatus 20A shown in FIG. 11 will be omitted.

A removing device 20C shown in FIG. The sensor 31 detects an adhesive film piece at a predetermined position among the plurality of adhesive film pieces 3 as an adhesive film piece 3Z to be removed.

The predetermined position is, for example, a position obtained by appropriately combining a position in the longitudinal direction X of the release film 2 and a position in the width direction Y of the release film 2 . The longitudinal direction X of the release film 2 is the direction in which the release film 2 extends and the direction in which the release film 2 is wound around the core 14 . The width direction Y of the release film 2 is a direction orthogonal to the longitudinal direction X of the release film 2 and the thickness direction Z of the release film 2 (see FIGS. 3 to 5). The predetermined position may be one or plural. When there are a plurality of predetermined positions, the predetermined positions may be positions at predetermined intervals in the longitudinal direction X of the release film 2 or in the width direction Y of the release film 2. It may be a position that does not have a predetermined interval in the width direction Y of the .

For example, as shown in FIG. 17, the predetermined position is the position when the plurality of adhesive film pieces 3 in the original film 5 are divided into a plurality of adhesive film piece groups 12 arranged in the longitudinal direction X of the release film 2. , may be the same position in the group of adhesive film strips 12 . In other words, an adhesive film piece at the same position in a plurality of adhesive film piece groups may be detected as the adhesive film piece 3Z to be removed. Note that the predetermined position does not have to be the same position in the plurality of adhesive film piece groups 12 .

In the third removing method, the wound body 10 around which the original film 5 is wound is set on the unwinding shaft 21 , and the winding core 14 on which the film 1 is wound is set on the winding shaft 22 . Then, the unwinding shaft 21 and the winding shaft 22 are rotated to wind the original film 5 unwound from the roll 11 around the winding core 14 set on the winding shaft 22 . At this time, the first receiving roller 23 is separated from the original film 5 . Then, when the sensor 31 detects an adhesive film piece at a predetermined position among the plurality of adhesive film pieces 3 as an adhesive film piece 3Z to be removed, the detected adhesive film piece 3Z to be removed arrives. , the first application roller 23 is brought close to the original film 5 and brought into contact with the adhesive film piece 3Z to be removed. As a result, the adhesive film piece 3Z to be removed is transferred from the original film 5 to the first receiving roller 23 . Then, when the adhesive film piece 3Z to be removed is transferred to the first attachment roller 23, the first attachment roller 23 is separated from the original film 5. As shown in FIG. As a result, the adhesive film piece 3Z to be removed is removed from the original film 5. As shown in FIG. Also, the adhesive film piece 3Z to be removed that has been transferred to the first receiving roller 23 is transferred from the first receiving roller 23 to the second receiving roller 24 .

(Fourth removal method)
In the fourth removing method, the removal target adhesive film piece 3Z is removed from the original film 5 using a removing device 20D shown in FIG.

A removing device 20D shown in FIG. 14 is basically the same as the removing device 20B shown in FIG. 12, but differs from the removing device 20B shown in FIG. 12 in that it further includes a sensor. Therefore, only the points different from the removing apparatus 20B shown in FIG. 12 will be described below, and the explanation of the points similar to those of the removing apparatus 20B shown in FIG. 12 will be omitted.

A removing device 20D shown in FIG. The sensor 31 is the same as that of the removing device 20C shown in FIG. 13, and detects an adhesive film piece at a predetermined position among the plurality of adhesive film pieces 3 as an adhesive film piece 3Z to be removed.

Then, in the fourth removal method, the wound body 10 around which the original film 5 is wound is set on the unwinding shaft 21 , and the winding core 14 on which the film 1 is wound is set on the winding shaft 22 . Then, the unwinding shaft 21 and the winding shaft 22 are rotated to wind the original film 5 unwound from the roll 11 around the winding core 14 set on the winding shaft 22 . At this time, the adherence tape 25 is separated from the original film 5 . Then, when the sensor 31 detects an adhesive film piece at a predetermined position among the plurality of adhesive film pieces 3 as an adhesive film piece 3Z to be removed, the detected adhesive film piece 3Z to be removed arrives. , the adhering tape 25 is brought close to the original film 5 and brought into contact with the adhesive film piece 3Z to be removed. As a result, the adhesive film piece 3Z to be removed is transferred from the original film 5 to the adherend tape 25. As shown in FIG. Then, when the adhesive film piece 3Z to be removed is transferred to the adhesion tape 25, the adhesion tape 25 is separated from the original film 5. As shown in FIG. As a result, the adhesive film piece 3Z to be removed is removed from the original film 5. As shown in FIG. Then, the adhesive tape 25 is transported by the tape transport mechanism 26 so that the new surface of the adhesive tape 25 can be brought into contact with the next coming adhesive film piece 3Z to be removed.

(Fifth removal method)
In the fifth removing method, the removing device 20E shown in FIG. 15 is used to remove the adhesive film piece 3Z to be removed from the raw film 5.

A removing device 20E shown in FIG. 15 is basically the same as the removing device 20A shown in FIG. 11, but differs from the removing device 20A shown in FIG. 11 in that an inspection machine is further provided. Therefore, only the points different from the removing apparatus 20A shown in FIG. 11 will be described below, and the explanation of the points similar to the removing apparatus 20A shown in FIG. 11 will be omitted.

A removing device 20E shown in FIG. The inspection machine 32 inspects a plurality of adhesive film pieces 3 provided on the original film 5 . The inspection machine 32 determines whether the adhesive film piece 3 is a non-defective product or a defective product from the shape, position, size, etc. of the adhesive film piece 3, for example. Then, the inspection machine 32 detects the adhesive film piece 3 determined as a defective product as the adhesive film piece 3Z to be removed.

In the fifth removing method, the wound body 10 around which the original film 5 is wound is set on the unwinding shaft 21 , and the winding core 14 on which the film 1 is wound is set on the winding shaft 22 . Then, the unwinding shaft 21 and the winding shaft 22 are rotated to wind the original film 5 unwound from the roll 11 around the winding core 14 set on the winding shaft 22 . At this time, the first receiving roller 23 is separated from the original film 5 . When the inspection machine 32 detects the adhesive film piece 3 determined as a defective product as an adhesive film piece 3Z to be removed, the first receiving roller 23 is moved at the timing when the detected adhesive film piece 3Z to be removed arrives. is brought close to the original film 5 and brought into contact with the adhesive film piece 3Z to be removed. As a result, the adhesive film piece 3Z to be removed is transferred from the original film 5 to the first receiving roller 23 . Then, when the adhesive film piece 3Z to be removed is transferred to the first attachment roller 23, the first attachment roller 23 is separated from the original film 5. As shown in FIG. As a result, the adhesive film piece 3Z to be removed is removed from the original film 5. As shown in FIG. Also, the adhesive film piece 3Z to be removed that has been transferred to the first receiving roller 23 is transferred from the first receiving roller 23 to the second receiving roller 24 .

(Sixth removal method)
In the sixth removing method, the adhesive film piece 3Z to be removed is removed from the original film 5 using a removing device 20F shown in FIG.

A removing device 20F shown in FIG. 16 is basically the same as the removing device 20B shown in FIG. 12, but differs from the removing device 20B shown in FIG. 12 in that an inspection machine is further provided. Therefore, only the points different from the removing apparatus 20B shown in FIG. 12 will be described below, and the explanation of the points similar to those of the removing apparatus 20B shown in FIG. 12 will be omitted.

A removing device 20F shown in FIG. The inspection machine 32 is the same as that of the removing device 20E shown in FIG. It is detected as the agent film piece 3Z.

Then, in the sixth removal method, the wound body 10 around which the original film 5 is wound is set on the unwinding shaft 21 , and the winding core 14 on which the film 1 is wound is set on the winding shaft 22 . Then, the unwinding shaft 21 and the winding shaft 22 are rotated to wind the original film 5 unwound from the roll 11 around the winding core 14 set on the winding shaft 22 . At this time, the adherence tape 25 is separated from the original film 5 . When the inspection machine 32 detects the adhesive film piece 3 determined as a defective product as an adhesive film piece 3Z to be removed, the adhesion tape 25 is removed from the tape 25 at the timing when the detected adhesive film piece 3Z to be removed arrives. It is brought close to the film 5 and brought into contact with the adhesive film piece 3Z to be removed. As a result, the adhesive film piece 3Z to be removed is transferred from the original film 5 to the adherend tape 25. As shown in FIG. Then, when the adhesive film piece 3Z to be removed is transferred to the adhesion tape 25, the adhesion tape 25 is separated from the original film 5. As shown in FIG. As a result, the adhesive film piece 3Z to be removed is removed from the original film 5. As shown in FIG. Then, the adhesive tape 25 is transported by the tape transport mechanism 26 so that the new surface of the adhesive tape 25 can be brought into contact with the next coming adhesive film piece 3Z to be removed.

[the film]
As shown in FIGS. 2 to 5, the film 1 includes a long (tape-shaped) release film 2, a plurality of adhesive film pieces 3 provided on the release film 2 and separated from each other, and the release film 2. a non-adhesive area 4 not provided with a plurality of adhesive film strips 3 thereon. A plurality of adhesive film pieces 3 are provided along at least the longitudinal direction X of the release film 2 . In plan view, the outer shape of the film 1 is defined by the outer shape of the release film 2 . The film 1 is manufactured, for example, by the film manufacturing method described above.

The plurality of adhesive film pieces 3 includes a first adhesive film piece 101 and a second adhesive film piece 102 adjacent to each other with the non-adhesive region 4 interposed therebetween, and a third adhesive film piece 101 and a second adhesive film piece 102 adjacent to each other with the non-adhesive region 4 interposed therebetween. an adhesive film piece 103 and a fourth adhesive film piece 104 . The distance between the first adhesive film piece 101 and the second adhesive film piece 102 and the distance between the third adhesive film piece 103 and the fourth adhesive film piece 104 are different. In other words, the plurality of adhesive film pieces 3 has at least two sets of adhesive film pieces 3 that are spaced apart via the non-adhesive regions 4 and that are separated from each other by different distances.

The first adhesive film piece 101 , the second adhesive film piece 102 , the third adhesive film piece 103 and the fourth adhesive film piece 104 are any of the plurality of adhesive film pieces 3 . 3. The plurality of adhesive film pieces 3 may have only one first adhesive film piece 101, second adhesive film piece 102, third adhesive film piece 103, and fourth adhesive film piece 104. , the first adhesive film piece 101, the second adhesive film piece 102, the third adhesive film piece 103, and the fourth adhesive film piece 104, respectively. Also, all of the plurality of adhesive film pieces 3 are either the first adhesive film piece 101, the second adhesive film piece 102, the third adhesive film piece 103, or the fourth adhesive film piece 104. may Also, either one of the first adhesive film piece 101 and the second adhesive film piece 102 may be the same adhesive film piece 3 as the third adhesive film piece 103 or the fourth adhesive film piece 104. . Similarly, either one of the third adhesive film piece 103 and the fourth adhesive film piece 104 may be the same adhesive film piece 3 as the first adhesive film piece 101 or the second adhesive film piece 102. good.

The direction in which the first adhesive film piece 101 and the second adhesive film piece 102 are adjacent and the direction in which the third adhesive film piece 103 and the fourth adhesive film piece 104 are adjacent are not particularly limited. do not have.

For example, since a plurality of adhesive film pieces 3 are provided along the longitudinal direction X of the release film 2, as shown in FIG. , may be adjacent to each other in the longitudinal direction X of the release film 2 , and the third adhesive film piece 103 and the fourth adhesive film piece 104 may be adjacent to each other in the longitudinal direction X of the release film 2 . Further, for example, when a plurality of adhesive film pieces 3 are also arranged in the width direction Y of the release film 2, as shown in FIG. may be adjacent in the width direction Y of the release film 2 , and the third adhesive film piece 103 and the fourth adhesive film piece 104 may be adjacent in the width direction Y of the release film 2 .

Alternatively, the non-adhesive region 4 may have a first region in which the distance between adjacent adhesive film pieces 3 is greater than that of the adhesive film pieces 3 . Furthermore, the non-adhesive region 4 may have a second region where the distance between adjacent adhesive film strips 3 is less than the adhesive film strips 3 . Furthermore, the non-adhesive region 4 may have a third region where the distance between adjacent adhesive film pieces 3 is less than the distance between adjacent adhesive film pieces 3 in the first region. The separation distance in the first area is the separation distance between adjacent adhesive film pieces 3 that is longer than the adhesive film pieces 3 in the first area. Longer or shorter than these adhesive film pieces 3 means longer or shorter than the maximum length of a plurality of adhesive film pieces 3, for example. When the plurality of adhesive film pieces 3 all have the same shape, it means longer or shorter than the maximum length of any one adhesive film piece 3 . For example, if the distance between the first adhesive film piece 101 and the second adhesive film piece 102 is greater than the distance between the third adhesive film piece 103 and the fourth adhesive film piece 104, then the first adhesive film The separation distance between the adhesive film piece 101 and the second adhesive film piece 102 is longer than the maximum length of the first adhesive film piece 101 and the second adhesive film piece 102, and the third adhesive film piece 103 and the fourth adhesive film piece 103 are separated from each other. The separation distance from the adhesive film piece 104 is shorter than the maximum length of the third adhesive film piece 103 and the fourth adhesive film piece 104 .

For example, as shown in FIG. 32 , in the non-adhesive region 4 , the distance between the first adhesive film piece 101 and the second adhesive film piece 102 adjacent to each other is longer than that of the adhesive film piece 3 . It may have an area A1. Further, the non-adhesive area 4 may have a second area A2 in which the distance between the adjacent third adhesive film piece 103 and fourth adhesive film piece 104 is shorter than the adhesive film piece 3. good. In the non-adhesive area 4, the distance between the adjacent first adhesive film piece 101 and the second adhesive film piece 102 is the same as the adjacent first adhesive film piece 101 and the second adhesive film piece 101 in the first area A1. It may have a third region A3 that is shorter than the separation distance from the agent film piece 102 .

Further, as shown in FIG. 18, the separation distance between the first adhesive film piece 101 and the second adhesive film piece 102 is It may be longer than the maximum length of the first adhesive film piece 101 and the second adhesive film piece 102 . The maximum length of the first adhesive film piece 101 and the second adhesive film piece 102 is the maximum length of the first adhesive film piece 101 and the maximum length of the second adhesive film piece 102, whichever is longer. say. Further, when the plurality of adhesive film pieces 3 all have the same shape, the maximum length of the first adhesive film piece 101 and the second adhesive film piece 102 is the maximum length of any one adhesive film piece 3. It is also. Furthermore, the separation distance between the third adhesive film piece 103 and the fourth adhesive film piece 104 is the third adhesive film piece 103 in the separation direction between the third adhesive film piece 103 and the fourth adhesive film piece 104 . and may be shorter than the maximum length of the fourth adhesive film piece 104 . Further, the distance between the third adhesive film piece 103 and the fourth adhesive film piece 104 may be less than the distance between the first adhesive film piece 101 and the second adhesive film piece 102 .

The film 1 may further include a half cut 2A formed on the release film 2. As shown in FIG. The half cut 2A means that the surface of the release film 2 on the adhesive film piece 3 side is cut without cutting the surface of the release film 2 opposite to the adhesive film piece 3 . The shape of the half cut 2A is not particularly limited, and, like the adhesive film piece 3, it may be a circle such as a perfect circle or an oval, a polygon such as a triangle or square, a star, or a complicated shape such as various marks. etc. A square, a rectangle, a trapezoid, etc. are mentioned as a quadrangle. If the plurality of adhesive film pieces 3 have the same shape, the half cut 2A may have the same shape as the outer shape of the adhesive film piece 3 .

The distance between the first adhesive film piece 101 and the second adhesive film piece 102 is the maximum length of the adhesive film piece 3 in the separation direction between the first adhesive film piece 101 and the second adhesive film piece 102. If longer, the half-cut 2A may be formed in the non-adhesive area 4 between the first adhesive film piece 101 and the second adhesive film piece 102 . In this case, the contour of the half-cut 2A may be the same as the contour of the first adhesive film piece 101 or the second adhesive film piece 102 . When the plurality of adhesive film pieces 3 has a plurality of first adhesive film pieces 101 and second adhesive film pieces 102, all first adhesive film pieces 101 and second adhesive film pieces 102 Half cuts 2A may be formed in the non-adhesive regions 4 between, and half cuts may be formed only in the non-adhesive regions 4 between some first adhesive film pieces 101 and second adhesive film pieces 102. 2A may be formed.

As shown in FIG. 20, when the third adhesive film piece 103 and the fourth adhesive film piece 104 are adjacent to each other in the longitudinal direction X of the release film 2, the third adhesive film piece 103 and the fourth adhesive film piece 103 in the longitudinal direction X are separated from each other. The separation distance from the four adhesive film pieces 104 is defined as the separation distance D1. In this case, the transport distance of the film 1 when attaching the third adhesive film piece 103 and the fourth adhesive film piece 104 can be shortened, and the film 1 can be effectively used to reduce costs. From the viewpoint of being able to achieve this, the distance D1 is preferably 20 mm or less, more preferably 10 mm or less, and even more preferably 8 mm or less. On the other hand, from the viewpoint of improving the workability of attaching the adhesive film piece 3, the separation distance D1 is preferably 0.1 mm or more, more preferably 0.5 mm or more, and is preferably 1 mm or more. More preferred. These upper and lower limits can be combined as appropriate. For example, the separation distance D1 is preferably 0.1 mm or more and 20 mm or less, more preferably 0.5 mm or more and 10 mm or less, and even more preferably 1 mm or more and 8 mm or less.

As shown in FIG. 21, when a plurality of adhesive film pieces 3 form a plurality of adhesive film piece groups 13 arranged in the longitudinal direction X of the release film 2, the arrangement of the adhesive film pieces 3 is such that the plurality of adhesive film pieces 3 are arranged in a plurality of groups. The adhesive film strip group 13 may be the same. That is, each adhesive film piece group 13 is composed of a part of the adhesive film pieces 3 of the plurality of adhesive film pieces 3 . The adhesive film pieces 3 are arranged in the same manner among the plurality of adhesive film piece groups 13 . The length of one adhesive film piece group 13 in the longitudinal direction X of the release film 2 is not particularly limited. For example, the length of one adhesive film piece group 13 in the longitudinal direction X of the release film 2 can be 1 mm or more, 5 mm or more, or 10 mm or more. Also, the length of one adhesive film piece group 13 in the longitudinal direction X of the release film 2 can be 2000 mm or less, 500 mm or less, or 250 mm or less. These lower and upper limits can be combined as appropriate. For example, the length of one adhesive film piece group 13 in the longitudinal direction X of the release film 2 can be 1 mm or more and 2000 mm or less, 5 mm or more and 500 mm or less, or 10 mm or more and 250 mm or less.

As shown in FIG. 21, when a plurality of adhesive film pieces 3 form a plurality of adhesive film piece groups 13 arranged in the longitudinal direction X of the release film 2, the adhesive film piece group adjacent to each other in the longitudinal direction X. 13 is defined as a distance D2. In this case, when adhering the adjacent adhesive film piece group 13 to another member, the transport distance of the film 1 can be shortened, and the film 1 can be effectively used to reduce the cost. The distance D2 is preferably 20 mm or less, more preferably 10 mm or less, and even more preferably 8 mm or less. On the other hand, from the viewpoint of improving workability in attaching the adhesive film piece 3, the separation distance D2 is preferably 0.1 mm or more, more preferably 0.5 mm or more, and preferably 1 mm or more. More preferred. These upper and lower limits can be combined as appropriate. For example, the separation distance D2 is preferably 0.1 mm or more and 20 mm or less, more preferably 0.5 mm or more and 10 mm or less, and even more preferably 1 mm or more and 8 mm or less.

Moreover, the plurality of adhesive film pieces 3 may be arranged in a line in the longitudinal direction X of the release film 2 , or may be arranged in a plurality of rows in the longitudinal direction X of the release film 2 . When a plurality of adhesive film pieces 3 are arranged in a row in the longitudinal direction X of the release film 2, only the plurality of adhesive film pieces 3 arranged in a row are provided on the release film 2. ing. When a plurality of adhesive film pieces 3 are arranged in a line in the longitudinal direction X of the release film 2, the plurality of adhesive film pieces 3 are separated from the release film 2 like the film 1 shown in FIG. 10(b). It may be arranged in the central portion in the width direction Y, and arranged at a position shifted (offset) from the central portion in the width direction Y of the release film 2 like the film 1 shown in FIG. good too. In these cases, the plurality of adhesive film pieces 3 and half cuts 2A in the original film 5 are arranged in the central portion in the width direction Y of the release film 2, like the original film 5 shown in FIG. Like the original film 5 shown in FIG. 22( a ), it is arranged at a position shifted (offset) from the central portion in the width direction Y of the release film 2 .

The multiple adhesive film pieces 3 may have the same shape or different shapes. For example, the multiple adhesive film pieces 3 may be of different shapes, as shown in FIG. In this case, all the adhesive film pieces 3 may have different shapes, or adhesive film pieces 3 having different shapes and adhesive film pieces 3 having the same shape may be mixed.

Moreover, the plurality of adhesive film pieces 3 may be arranged in one row in the width direction Y of the release film 2 , or may be arranged in a plurality of rows in the width direction Y of the release film 2 . For example, the plurality of adhesive film pieces 3 may be arranged in three rows in the width direction of the release film 2 as shown in FIGS. 18 and 19 .

Also, the plurality of adhesive film pieces 3 may be separated from the edge of the release film 2 in the width direction Y of the release film 2 . In this case, the distance between the edge of the release film 2 and the adhesive film piece 3 closest to the edge in the width direction Y of the release film 2 can be 0.1 mm or more and 10 mm or less. It is preferably 8 mm or less, more preferably 0.2 mm or more and 5 mm or less.

The film 1 thus manufactured is stored, transported, etc. as a roll 15 wound around a roll core 14, as shown in FIG.

[Wound body]
As shown in FIG. 24, the wound body 15 includes a long (tape-shaped) film 1 and a winding core 14 around which the film 1 is wound. That is, the wound body 15 is obtained by winding the film 1 around the winding core 14 .

The winding core 14 includes a core material 14a and a pair of side plates 14b. The core material 14a is formed in a cylindrical shape. The film 1 is wound around the outer peripheral surface of the core material 14a. The pair of side plates 14b are attached to both ends of the core member 14a in the axial direction. A pair of side plates 14b support the film 1 from the left and right. The gap between the pair of side plates 14b is slightly wider than the width of the film 1. As shown in FIG.

[Connection structure]
As shown in FIG. 25, the connection structure 16 includes a first member 17 having a first adhesive surface 17a, a second member 18 having a second adhesive surface 18a, and a first adhesive surface 17a and a second adhesive surface 18a. and an adhesive film piece 3 connecting the .

The first member 17 includes, for example, chip parts such as IC chips, LSI chips, resistor chips, and capacitor chips, photoelectric conversion parts such as LEDs and image sensors, strain sensors, pressure sensors, acoustic parts, and piezoelectric conversion parts such as piezo elements. components, thermometers, thermal sensors such as heat sinks, and thermal management components. A surface of the first member 17 facing the second member 18 is a first adhesive surface 17a. For example, a first electrode (not shown) for electrical connection with the second member 18 is arranged on the first adhesive surface 17a.

The second member 18 is, for example, a glass substrate, a polyimide substrate, a polyamideimide substrate, a polyethylene terephthalate substrate, a polycarbonate substrate, a cycloolefin polymer (COP) substrate, a polyethylene naphthalate substrate, a glass-reinforced epoxy substrate, a paper phenol substrate, a ceramic substrate. , a substrate having optical transparency such as a laminated plate, and a silicon substrate. In the second member 18, the surface facing the first adhesive surface 17a of the first member 17 is the second adhesive surface 18a. For example, a second electrode (not shown) for electrical connection with the first member 17 is arranged on the second adhesive surface 18a.

There is no clear distinction between the first member 17 and the second member 18, and any member may be applied to each member.

The adhesive film piece 3 is the adhesive film piece 3 peeled from the film 1 described above. The adhesive film piece 3 connects the first adhesive surface 17a and the second adhesive surface 18a with the adhesive 6 . When the adhesive film piece 3 has anisotropic conductivity due to the inclusion of the conductive particles 7, the conductive particles 7 electrically connect the first electrode on the first adhesive surface 17a and the second electrode on the second adhesive surface 18a. can be made

[Method for manufacturing connection structure]
As shown in FIG. 26, the method for manufacturing a bonded structure includes a preparation step (S21) and a connection step (S22) performed after the preparation step (S21).

In the preparation step (S21), the film 1 described above is prepared. At this time, as the film 1, a wound body 15 in which the film 1 is wound is prepared. In addition, in the preparation step (S21), the film manufacturing method described above may be performed, or only the film 1 manufactured by the film manufacturing method described above may be prepared.

As shown in FIG. 27, the connection step (S22) includes a position detection step (S31), an attachment step (S32), and an overlapping step (S33).

In the position detection step ( S<b>31 ), first, the film 1 is unwound from the roll 15 . Then, as shown in FIG. 28, the imaging device 33 detects the position of the adhesive film piece 3 on the film 1 . At this time, the imaging device 33 may be arranged on the adhesive film piece 3 side with respect to the release film 2 or may be arranged on the opposite side of the adhesive film piece 3 with respect to the release film 2 . As shown in FIG. 28 , in this embodiment, the imaging device 33 is arranged on the opposite side of the adhesive film piece 3 with respect to the release film 2 . In this case, the imaging device 33 can detect the position of the adhesive film piece 3 on the film 1 from the release film 2 side by using the release film 2 having optical transparency.

In the sticking step (S32), the adhesive film piece 3 is stuck to the first adhesive surface 17a based on the position detected in the position detecting step (S31). After that, the release film 2 is peeled off from the adhesive film piece 3 attached to the first adhesive surface 17a.

In the overlapping step (S33), the adhesive film piece 3 is interposed between the first adhesive surface 17a and the second adhesive surface 18a. As a result, the first adhesive surface 17 a and the second adhesive surface 18 a are temporarily connected by the adhesive 6 of the adhesive film piece 3 . Then, the first member 17 and the second member 18 are pressed, and heat or light is applied to the adhesive 6 of the adhesive film piece 3 to cure the adhesive 6 . Thereby, the connection structure 16 in which the first adhesive surface 17a and the second adhesive surface 18a are connected by the adhesive film piece 3 is obtained. When the adhesive film piece 3 has anisotropic conductivity due to the inclusion of the conductive particles 7, before the adhesive 6 is cured, the first member 17 and the second member 18 are pressed to press the adhesive film piece. The first member 17 and the second member 18 are electrically connected by the conductive particles 7 of 3. Thereby, the connection structure 16 is manufactured.

As described above, in the film manufacturing method according to the present embodiment, the number of adhesive film pieces 3 provided on the release film 2 can be reduced by removing the adhesive film pieces 3Z to be removed from the original film 5. can. By changing the position and the number of the adhesive film pieces 3 to be the adhesive film pieces 3Z to be removed, the arrangement of the adhesive film pieces 3 provided on the release film 2 can be changed. This makes it possible to produce a film to which adhesive film strips can be applied at various locations. In addition, for example, when there is a defective adhesive film piece 3 in the original film 5, the defective adhesive film piece 3 is removed as an adhesive film piece 3Z to be removed, thereby removing the defective adhesive film piece. A film 1 with 3 removed can be produced.

Incidentally, by preparing a plurality of dies for punching the adhesive film pieces 3, the arrangement of the adhesive film pieces 3 provided on the release film 2 can be changed. However, there is a problem that preparing a plurality of molds increases the cost. For example, if it is desired to realize the arrangement of the adhesive film piece 3 as shown in FIG. 29 and the arrangement of the adhesive film piece 3 as shown in FIG. 30, it is necessary to produce two molds. If you want to achieve still other arrangements, you will need to make more molds. In contrast, in this film manufacturing method, by removing the adhesive film pieces 3Z to be removed from the original film 5, the arrangement of the adhesive film pieces 3 provided on the release film 2 can be changed. For example, if the original film 5 having the adhesive film pieces 3 arranged as shown in FIG. The arrangement of adhesive film strips 3 shown in any of Figures 30 can also be realized. Therefore, the cost can be suppressed compared to the case of preparing a plurality of molds.

Alternatively, a plurality of adhesives can be provided at arbitrary positions on the release film using a dispenser that drops liquid adhesives. However, liquid adhesives have problems such as difficulty in forming a high-aspect structure, easy rounding of edges due to surface tension, and deterioration of dimensional accuracy due to seepage. On the other hand, in this film manufacturing method, since the adhesive film piece 3Z to be removed among the plurality of adhesive film pieces 3 provided on the release film 2 is removed, these problems can be resolved. .

In addition, in this film manufacturing method, by transferring the adhesive film piece 3Z to be removed from the original film 5 to the first adhesion roller 23, the adhesive film piece 3Z to be removed can be removed appropriately. Moreover, since the adhesive film piece to be removed 3Z transferred to the first receiving roller 23 is transferred to the second receiving roller 24, the adhesive film piece to be removed 3Z transferred to the first receiving roller 23 is the original. Returning to the film 5 can be suppressed.

Further, in this film manufacturing method, by transferring the adhesive film piece 3Z to be removed from the original film 5 to the adhesion tape 25, the adhesive film piece 3Z to be removed can be removed appropriately. Moreover, since the adhesive tape 25 is brought into contact with and separated from the original film 5 while being conveyed, it is possible to prevent the removal target adhesive film piece 3Z transferred to the adhesive tape 25 from being returned to the original film 5 .

In addition, in this film manufacturing method, since the adhesive film piece 3Z to be removed is detected and the detected adhesive film piece 3Z to be removed is removed, the removal of the adhesive film piece 3Z to be removed can be automated. .

Further, in this film manufacturing method, the adhesive film piece 3 at a predetermined position among the plurality of adhesive film pieces 3 is detected and removed as the adhesive film piece 3Z to be removed. The arrangement of adhesive film strips 3 can be patterned. This makes it possible, for example, to manufacture a film to which a plurality of adhesive film pieces 3 can be applied in the same pattern arrangement to a plurality of members.

In addition, in this film manufacturing method, the adhesive film piece 3 at the same position in the plurality of adhesive film piece groups 12 of the original film 5 is detected and removed as the adhesive film piece 3Z to be removed. The arrangement of the adhesive film strips 3 of the adhesive film strip group 13 can be the same. This makes it possible, for example, to manufacture a film 1 to which a plurality of adhesive film pieces 3 can be applied in the same pattern arrangement to a plurality of members.

By the way, by forming the plurality of adhesive film pieces 3 provided in each adhesive film piece group 13 by punching a die, the arrangement of the adhesive film pieces 3 in each adhesive film piece group 13 can be made the same. can be done. However, if one adhesive film piece group 13 is long in the longitudinal direction X of the release film 2, it is necessary to prepare a large mold, which raises the problem of increased cost. On the other hand, in this film manufacturing method, regardless of how long one adhesive film piece group 13 is in the longitudinal direction X of the release film 2, each adhesive film piece 3Z can be removed simply by removing the adhesive film piece 3Z to be removed. The arrangement of the adhesive film strips 3 of the adhesive film strip group 13 can be the same. Therefore, the cost can be suppressed compared to the case of preparing a mold.

In addition, in this film manufacturing method, since the defective adhesive film piece 3 is detected and removed as the adhesive film piece 3Z to be removed, a film free of the defective adhesive film piece 3 can be manufactured.

By the way, mark the defective adhesive film piece 3 or the vicinity of the defective adhesive film piece 3 by ink-jet, laser marking, or the like, and do not stick the defective adhesive film piece 3 relying on the mark. You can also make However, marking by an inkjet or laser mark, for example, causes problems such as problems with foreign substances caused by ink jet ink, scorching by laser, problems with foreign substances caused by dust generation, and damage to the release film. On the other hand, in this film manufacturing method, since the defective adhesive film piece 3 is detected and removed as the adhesive film piece 3Z to be removed, these problems can be resolved.

Further, in this film manufacturing method, by including the original film manufacturing process for manufacturing the original film 5, the arrangement of the plurality of adhesive film pieces 3 in the original film 5 can be freely set.

Further, in this film manufacturing method, the adhesive film layer 3A is formed on the entire surface of the release film 2, the adhesive film layer 3A is cut along the contour line 3B, and the blank portion is cut along the cut contour line 3B. 3A2 is removed from the release film 2. Thereby, a plurality of adhesive film pieces 3 can be easily provided on the release film 2 .

In addition, in this film manufacturing method, since the plurality of adhesive film pieces 3 are conductive, the members connected via the adhesive film pieces 3 can be electrically connected.

In the film 1 according to this embodiment, the distance between the first adhesive film piece 101 and the second adhesive film piece 102 and the distance between the third adhesive film piece 103 and the fourth adhesive film piece 104 are , are different, the adhesive film pieces 3 can be stuck at various positions compared to the case where the distances between the plurality of adhesive film pieces 3 are all the same.

In this film 1, the first adhesive film piece 101 and the second adhesive film piece 102 are adjacent to each other in the longitudinal direction X, and the third adhesive film piece 103 and the fourth adhesive film piece 104 are arranged in the longitudinal direction. By adjoining in the direction X, the adhesive film pieces 3 can be applied at various positions in the longitudinal direction X.

On the other hand, in this film 1, the first adhesive film piece 101 and the second adhesive film piece 102 are adjacent to each other in the width direction Y of the release film 2, and the third adhesive film piece 103 and the fourth adhesive film piece 104 are adjacent to each other. are adjacent to each other in the width direction Y, the adhesive film pieces 3 can be attached to various positions in the width direction Y.

Moreover, in this film 1, since the non-adhesive region 4 has the first region in which the distance between the adjacent adhesive film pieces 3 is longer than the distance between the adjacent adhesive film pieces 3, the adhesive film pieces can be placed at more diverse positions. 3 can be attached.

Moreover, in this film 1, since the non-adhesive region 4 has a second region in which the distance between the adjacent adhesive film pieces 3 is shorter than the distance between the adjacent adhesive film pieces 3, the adhesive film pieces can be placed at more diverse positions. 3 can be attached.

In this film 1, the non-adhesive area 4 has a third area A3 in which the distance between adjacent adhesive film pieces 3 is shorter than the distance between adjacent adhesive film pieces 3 in the first area A1. Adhesive film strips 3 can be applied at various positions.

Moreover, in this film 1, the separation distance between the first adhesive film piece 101 and the second adhesive film piece 102 is the first adhesion in the separation direction between the first adhesive film piece 101 and the second adhesive film piece 102. longer than the maximum length of the adhesive film piece 101 and the second adhesive film piece 102 . For this reason, the first adhesive film piece 101 and the second adhesive film piece 102 are separated without sticking the adhesive film piece 3 between the first adhesive film piece 101 and the second adhesive film piece 102 . The first adhesive film piece 101 and the second adhesive film piece 102 can be pasted at a position spaced apart from the maximum length of the first adhesive film piece 101 and the second adhesive film piece 102 in the separation direction.

Further, in this film 1, the separation distance between the third adhesive film piece 103 and the fourth adhesive film piece 104 is the third adhesion in the separation direction between the third adhesive film piece 103 and the fourth adhesive film piece 104. shorter than the maximum length of the adhesive film piece 103 and the fourth adhesive film piece 104; For this reason, the third adhesive film piece 103 and the fourth adhesive film piece 104 can be separated without sticking the adhesive film piece 3 between the third adhesive film piece 103 and the fourth adhesive film piece 104 . The third adhesive film piece 103 and the fourth adhesive film piece 104 can be attached at a position closer than the maximum length of the third adhesive film piece 103 and the fourth adhesive film piece 104 in the separation direction.

Also, in this film 1, the distance between the third adhesive film piece 103 and the fourth adhesive film piece 104 is shorter than the distance between the first adhesive film piece 101 and the second adhesive film piece 102. Therefore, the adhesive film piece 3 can be attached to a wider variety of positions.

Also, in this film 1, a half cut 2A is formed in the non-adhesive area 4 between the first adhesive film piece 101 and the second adhesive film piece 102. As shown in FIG. For this reason, for example, when another adhesive film piece 3 provided between the first adhesive film piece 101 and the second adhesive film piece 102 is removed during the production of the film 1, the adhesive film It can be determined whether or not the piece 3 is a trace of removal.

In addition, in this film 1, the third adhesive film piece 103 and the fourth adhesive film piece 104 are adjacent to each other in the longitudinal direction X, and the third adhesive film piece 103 and the fourth adhesive film piece 104 in the longitudinal direction X are separated from each other. is 10 mm or less. Therefore, it is possible to shorten the transport distance of the film 1 when attaching the third adhesive film piece 103 and the fourth adhesive film piece 104, and to make effective use of the film 1 to reduce the cost. can.

Further, in the film 1, since the arrangement of the adhesive film pieces 3 is the same for the plurality of adhesive film piece groups 13, the adhesive film pieces 3 are attached to the same member at the same position. can be applied effectively.

Moreover, in this film 1, the separation distance between the adhesive film piece groups 13 adjacent to each other in the longitudinal direction X of the release film 2 is 10 mm or less. Therefore, when the adjacent adhesive film piece group 13 is attached to another member, the transport distance of the film 1 can be shortened, and the film 1 can be effectively used to reduce the cost.

In addition, in this film 1, since the plurality of adhesive film pieces 3 are separated from the edge of the release film 2 in the width direction Y of the release film 2, when the end of the release film 2 interferes with other members, etc. In addition, it is possible to suppress the peeling of the adhesive film piece 3 from the peeling film 2 .

Moreover, in the film 1, since the plurality of adhesive film pieces 3 are arranged in a row in the longitudinal direction X of the release film 2, the adhesive film pieces 3 can be easily attached.

In addition, in the film 1, since at least some of the plurality of adhesive film pieces 3 have holes 3a, for example, the adhesive film piece 3 can be appropriately applied to a portion having a center portion where the adhesive film piece 3 is not desired to be stuck. A piece of adhesive film 3 can be applied.

Further, in the film 1, since the plurality of adhesive film pieces 3 have the same shape, the adhesive film pieces 3 can be efficiently attached to a plurality of adhesive surfaces having the same shape.

Further, in the film 1, since the adhesive film pieces 3 are conductive, the two members connected via the adhesive film pieces 3 can be electrically connected.

Further, in the film 1, since the adhesive film piece 3 contains the conductive particles 7, the adhesive film piece 3 can be imparted with anisotropic conductivity.
In the wound body 15 according to the present embodiment, since any one of the films 1 described above is wound around the winding core 14, the adhesive film pieces 3 can be attached to various positions.

In the connection structure 16 according to this embodiment, the first member 17 and the second member 18 are connected by any one of the adhesive film pieces 3 described above, so that the first adhesive surface 17a and the second adhesive surface Even if the position of the adhesive film 18a is varied, it is possible to obtain a connection structure 16 in which the adhesive film pieces 3 are appropriately attached to the first adhesive surface 17a and the second adhesive surface 18a.

In the method for manufacturing the connection structure according to the present embodiment, the first adhesive surface 17a of the first member 17 and the second adhesive surface of the second member 18 are bonded via the adhesive film piece 3 of any of the films 1 described above. 18a, even if the positions of the first adhesive surface 17a and the second adhesive surface 18a are varied, the adhesive film piece 3 can be properly attached to the first adhesive surface 17a and the second adhesive surface 18a. A connection structure 16 can be manufactured.

The present invention is not limited to the above embodiments, and can be modified as appropriate without departing from the gist of the present invention.

For example, in the above embodiments, examples of the shape, number, arrangement, etc. of the original film and the plurality of adhesive film pieces in the film were described, but the shape, number, arrangement, etc. of the original film and the plurality of adhesive film pieces in the film are particularly It is not limited.

Further, for example, in the above-described embodiment, an example of the connection step in the method for manufacturing a connected structure has been described. It may be realized by any method as long as it is possible.

Further, for example, in the above embodiment, the original film and the film were explained as having a two-layer structure in which a plurality of adhesive film pieces are provided on the release film. It may be a three-layer structure provided with two release films.

(Example)
Here, the production takt time for manufacturing the film by removing the defective adhesive film piece from the original film was calculated by the third removal method using the removing device 20C shown in FIG. In this calculation, a roll of 100 m of original film was used. This original film has 10,000 adhesive film pieces, and the 10,000 adhesive film pieces are arranged in a row in the longitudinal direction of the release film in the central portion in the width direction of the release film so as to be spaced apart from each other. It is assumed that In this original film, the rate of non-defective adhesive film pieces was 90%. The piece of film was taken as a defective product. Then, the unreeling speed of the original film from the roll, that is, the conveying speed of the original film was set to 9 m/min, and the defective adhesive film piece was removed as the adhesive film piece to be removed by the removal device 20C. As a result, the production takt time was 100/9≈11.1 min/roll because there was no need to stop the transport of the original film when the piece of adhesive film to be removed was removed. That is, it was 11.1 min per one roll of the wound body.

Furthermore, the production takt for applying the adhesive film piece to the component using the film thus produced was calculated. In this calculation, the time for sticking the adhesive film piece to the member was 5 sec/piece, and the transport time for the portion where the adhesive film piece to be removed was removed was 0.5 sec/piece. As a result, the production tact was 9000×5+1000×0.5=45500 sec/roll≈758.3 Hour/roll. That is, it was 758.3 hours per one winding.

INDUSTRIAL APPLICABILITY The present invention can be used, for example, as a film, a wound body, a connection structure, and a method for manufacturing a connection structure.

DESCRIPTION OF SYMBOLS 1... Film 2... Release film 2A... Half cut 3... Adhesive film piece 3a... Hole 3A... Adhesive film layer 3A1... Inside part 3A2... Margin part 3B... Outline 3Z... Removal Object adhesive film piece, 4... non-adhesive area, 5... original film, 6... adhesive, 7... conductive particles, 8... conductive adhesive area, 9... non-conductive adhesive area, 10... wound body , 11... Winding body 12... Adhesive film piece group 13... Adhesive film piece group 14... Core 14a... Core material 14b... Side plate 15... Winding body 16... Connection structure 17 First member 17a First adhesive surface 18 Second member 18a Second adhesive surface 20A Remover 20B Remover 20C Remover 20D Remover 20E Remover 20F removing device 21 unwinding shaft 22 winding shaft 23 first receiving roller 24 second receiving roller 25 receiving tape 26 tape conveying mechanism 27 wound body , 28... Unwinding shaft 29... Pressing roller 30... Winding shaft 31... Sensor 32... Inspection machine 33... Imaging device 101... First adhesive film piece 102... Second adhesive film piece, 103... Third adhesive film piece, 104... Fourth adhesive film piece, A1... First area, A2... Second area, A3... Third area, D1... Spacing distance, D2... Spacing distance, X... Longitudinal direction , Y... width direction.

Claims (25)

a long release film;
a plurality of adhesive film pieces provided on the release film and spaced apart from each other;
a non-adhesive region where the plurality of adhesive film pieces are not provided on the release film;
and a half cut formed on the release film,
The plurality of adhesive film pieces includes a first adhesive film piece and a second adhesive film piece adjacent to each other through the non-adhesive region, and a third adhesive film piece adjacent to each other through the non-adhesive region. a piece of film and a fourth piece of adhesive film;
the distance between the first adhesive film piece and the second adhesive film piece is different from the distance between the third adhesive film piece and the fourth adhesive film piece,
The separation distance between the first adhesive film piece and the second adhesive film piece is the distance between the first adhesive film piece and the second adhesive film piece in the separation direction between the first adhesive film piece and the second adhesive film piece. longer than the maximum length of the second adhesive film piece,
the half-cut is formed in the non-adhesive area between the first adhesive film piece and the second adhesive film piece;
the film. The first adhesive film piece and the second adhesive film piece are adjacent to each other in the longitudinal direction of the release film,
the third adhesive film piece and the fourth adhesive film piece are adjacent to each other in the longitudinal direction;
The film of Claim 1. The first adhesive film piece and the second adhesive film piece are adjacent to each other in the width direction of the release film,
The third adhesive film piece and the fourth adhesive film piece are adjacent to each other in the width direction,
The film of Claim 1. The non-adhesive region has a first region in which the distance between adjacent adhesive film pieces is longer than the adhesive film pieces.
The film according to any one of claims 1-3. The non-adhesive region has a second region in which the distance between adjacent adhesive film pieces is shorter than the adhesive film pieces.
5. The film of claim 4. The non-adhesive region has a third region in which the distance between adjacent adhesive film pieces is less than the distance between adjacent adhesive film pieces in the first region.
A film according to claim 4 or 5. The separation distance between the third adhesive film piece and the fourth adhesive film piece is the distance between the third adhesive film piece and the fourth adhesive film piece in the separation direction between the third adhesive film piece and the fourth adhesive film piece. shorter than the maximum length of the fourth adhesive film piece,
The film according to any one of claims 1-6 . the distance between the third adhesive film piece and the fourth adhesive film piece is less than the distance between the first adhesive film piece and the second adhesive film piece;
The film according to any one of claims 1-7 . The third adhesive film piece and the fourth adhesive film piece are adjacent to each other in the longitudinal direction of the release film,
The distance between the third adhesive film piece and the fourth adhesive film piece in the longitudinal direction is 20 mm or less.
The film according to any one of claims 1-8 . The plurality of adhesive film pieces constitute a plurality of adhesive film piece groups arranged in the longitudinal direction of the release film,
the arrangement of the adhesive film pieces is the same for the plurality of groups of adhesive film pieces;
The film according to any one of claims 1-9 . The separation distance between the adhesive film piece groups adjacent to each other in the longitudinal direction of the release film is 20 mm or less.
11. The film of Claim 10 . The plurality of adhesive film pieces are separated from the edge of the release film in the width direction of the release film,
The film according to any one of claims 1-11 . The plurality of adhesive film pieces are arranged in a line in the longitudinal direction of the release film,
The film according to any one of claims 1-12 . at least a portion of the plurality of adhesive film pieces having holes;
The film according to any one of claims 1-13 . the plurality of adhesive film pieces having the same shape;
The film according to any one of claims 1-14 . The half-cut is formed in the same shape as the adhesive film piece,
16. The film of claim 15. the adhesive film strip is electrically conductive;
A film according to any one of claims 1-16 . the adhesive film strip contains conductive particles;
18. The film of Claim 17 . The half cut is formed in an endless shape,
The film according to any one of claims 1-18. The half cut is formed in a circular shape,
The film according to any one of claims 1-19. The half-cut is formed in a polygonal shape,
The film according to any one of claims 1-19. the half-cut is the same as the outer shape of the first adhesive film piece or the second adhesive film piece;
The film according to any one of claims 1-19. A film according to any one of claims 1 to 22 ;
A winding core around which the film is wound,
winding body. a first member having a first adhesive surface;
a second member having a second adhesive surface;
and an adhesive film piece according to any one of claims 1 to 22 connecting the first adhesive surface and the second adhesive surface,
Connection structure. A preparation step of preparing the film according to any one of claims 1 to 22 ;
connecting the first adhesive surface of the first member and the second adhesive surface of the second member via the adhesive film piece of the film;
A method for manufacturing a connection structure.

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