JP2012218386A - Elongate flexible base material with pattern - Google Patents

Abstract

Provided is a long flexible substrate with a pattern that has small variations in moisture content after pattern formation, has high pattern retention reliability, and can be post-processed with high accuracy.
A first surface 2a of a long flexible base material 2 has a plurality of patterns 3 along a length direction of the long flexible base material 2, and a second surface which is the back surface of the first surface. A long flexible base having a plurality of convex bodies 5 arranged along the length direction of the long flexible base material 2 in a region corresponding to the outside of the pattern forming region 4 of the first surface on the surface 2b. The material 2 is wound so that the lengthwise dimension of the long flexible base material of the convex body 5 is larger than the interval between the convex bodies 5 adjacent to each other in the length direction of the long flexible base material. To be a long flexible substrate 1 with a pattern.
[Selection] Figure 2

Description

  The present invention relates to a flexible base material having a pattern, and more particularly to a long flexible base material with a pattern having excellent dimensional stability and pattern retention.

Conventionally, a long flexible base material is drawn out from a winding state, and a pattern such as a desired line or pattern is formed by printing or the like to form a long flexible base material with a pattern, and then wound into a winding state. In the process, a long flexible base material with a pattern is fed out and further processed, or a desired product can be manufactured by processing such as pasting, engaging and collating with other long flexible base materials and members. Has been done.
In recent years, liquid crystal display devices, organic EL display devices, and the like have been widely used in various information devices such as mobile phones, portable notebook computers, game machines, and electronic readers as power-saving and thin display devices. However, if the thickness of the glass substrate constituting the display device is reduced in response to the demand for reduction in thickness and weight, there is a problem that the glass substrate is easily damaged due to dropping or external pressing stress, and there is a limit to reduction in thickness and weight.

  On the other hand, by using a flexible base material such as a resin film instead of the glass base material, the problem of cracking due to the reduction in thickness and weight is solved. However, unlike a glass substrate, such a flexible substrate is likely to undergo dimensional changes due to temperature and moisture adsorption, and for example, a desired pattern such as a color filter or TFT (thin film transistor) array can be formed with high accuracy. There is a problem that the size of the flexible base material on which the pattern is formed is changed, and the subsequent process is hindered, which makes it difficult to manufacture a high-precision display device. In order to solve such a problem, the flexible substrate sheet is dried so that the moisture content is 0.2% by weight or less, and then stored in a high temperature and high humidity environment. There has been proposed a method of controlling the dimensions of a flexible substrate sheet by performing a moisture absorption treatment so that the moisture content is within ± 10% of the moisture content in a warm and humid environment (Patent Document 1, etc.). In addition, a method has been proposed in which the time from heat dehydration treatment of the flexible base sheet to the start of exposure is controlled, and the dimensions of the flexible base sheet are controlled by adjusting the temperature and humidity (Patent Document 2, etc.) ).

JP 2003-66423 A JP 2003-177551 A

However, when using a long flexible substrate as a flexible substrate for forming a pattern such as a color filter or a TFT array, for example, Patent Document 1 and Patent Document 2 is applied, the moisture content is not uniform between the winding core side and the winding outer side, and both ends and the center portion of the long flexible substrate in the width direction are not provided. The difference in moisture content is likely to occur between the above and the conventional problems as described above still exist.
Furthermore, when the pattern to be formed on the long flexible substrate is a laminated pattern and the thickness is large, or when multiple patterns are formed on the long flexible substrate and the individual patterns are independent, in the winding state The pattern may be damaged by the winding stress, or the position may be displaced or dropped out, resulting in a problem of reduced accuracy in processing using the pattern.
The present invention has been made in view of the above circumstances, and has a long flexible pattern with a pattern that has small variations in moisture content after pattern formation, has high pattern retention reliability, and can be post-processed with high accuracy. An object is to provide a substrate.

  In order to solve such a problem, the present invention is formed by winding a long flexible base material, along the length direction of the long flexible base material, on the first surface of the long flexible base material. A second surface having a plurality of patterns, which is the back surface of the first surface and corresponding to the outside of the pattern formation region of the first surface, along the length direction of the long flexible base material It has a plurality of convex-shaped bodies arranged, and the length-wise dimension of the long flexible base material of the convex-shaped body is larger than the interval between the convex-shaped bodies adjacent in the length direction of the long flexible base material. The configuration is also large.

As another aspect of the present invention, the array of convex bodies is the second surface of the long flexible base material, and the pattern forming region of each side edge in the width direction of the long flexible base material and the first surface. It was set as the structure which is located at least in the area | region corresponded between.
As another aspect of the present invention, there are a plurality of the pattern forming regions with a gap in the width direction of the first surface of the long flexible substrate, and the array of the convex bodies is formed by the long flexible substrate. The second surface is also located in a region corresponding to the space between the pattern formation regions in the width direction of the first surface.
As another aspect of the present invention, the convex body is configured to contain conductive particles.
As another aspect of the present invention, the convex body is configured to have a conductive film on the surface.

As another aspect of the present invention, the long flexible base material is a resin film, and the pattern includes a first adhesive layer, a functional layer film, a functional layer, a second adhesive layer, and a release film from the resin film side. The first adhesive layer and the functional layer film can be peeled off, and the second adhesive layer and the release film can be peeled off, and the first adhesive layer can be peeled off. The force required for peeling between the layer and the functional layer film was set to be greater than the force required for peeling between the second adhesive layer and the release film.
As another aspect of the present invention, the long flexible substrate is a release film, and the pattern includes a second adhesive layer, a functional layer, a functional layer film, a first adhesive layer, and a resin film from the release film side. The release film and the second adhesive layer can be peeled off, the functional layer film and the first adhesive layer can be peeled off, and the release film and the first adhesive layer can be peeled off. The force required for peeling from the second adhesive layer was set to be smaller than the force required for peeling between the functional layer film and the first adhesive layer.

  In the present invention, the convex body generates a minute gap between the overlapping surfaces of the long flexible base material in the wound state, and this gap communicates with the outside. The condition where the long flexible base material with the pattern comes into contact with the environmental atmosphere is uniform at the side, the outer side, and both ends and the center portion in the width direction of the long flexible base material, and is thus in the winding state. It is possible to uniformly control the moisture content of a long flexible substrate with a pattern, preventing a decrease in processing accuracy due to dimensional changes, and performing processing using a pattern or processing on a pattern with high accuracy. In addition, the pressing force on the pattern in the winding state is relieved by the convex shape body, and the occurrence of defects such as pattern damage, misalignment, and dropout is prevented and the pattern is reliably Equity is possible.

It is a figure which shows one Embodiment of the elongate flexible base material with a pattern of this invention, and is a partial top view of the elongate flexible base material with a pattern of the extended state. It is the elements on larger scale in the II line of the elongate flexible base material with a pattern shown by FIG. It is the elements on larger scale in the II-II line of the elongate flexible base material with a pattern shown by FIG. It is a figure which shows other embodiment of the elongate flexible base material with a pattern of this invention, and is a partial top view of the elongate flexible base material with a pattern of the extended state. It is a figure which shows other embodiment of the elongate flexible base material with a pattern of this invention, and is a fragmentary sectional view along the width direction of the elongate flexible base material with a pattern of the extended state. It is a figure which shows other embodiment of the elongate flexible base material with a pattern of this invention, and is a fragmentary sectional view along the width direction of the elongate flexible base material with a pattern of the extended state. It is a figure which shows other embodiment of the elongate flexible base material with a pattern of this invention, and is a fragmentary sectional view along the width direction of the elongate flexible base material with a pattern of the extended state. It is a figure which shows other embodiment of the elongate flexible base material with a pattern of this invention, and is a fragmentary sectional view along the width direction of the elongate flexible base material with a pattern of the extended state. It is a figure which shows other embodiment of the elongate flexible base material with a pattern of this invention, and is a fragmentary sectional view along the length direction of the elongate flexible base material with a pattern of the extended state. It is process drawing for demonstrating the manufacturing method of the elongate flexible base material with a pattern shown by FIG. It is a figure which shows other embodiment of the elongate flexible base material with a pattern of this invention, and is a fragmentary sectional view along the length direction of the elongate flexible base material with a pattern of the extended state. It is process drawing for demonstrating the manufacturing method of the elongate flexible base material with a pattern shown by FIG.

Hereinafter, embodiments of the present invention will be described.
FIG. 1 is a diagram showing an embodiment of a long flexible substrate with a pattern according to the present invention, and is a partial plan view of the long flexible substrate with a pattern in the extended state. FIG. 2 is a pattern shown in FIG. FIG. 3 is a partially enlarged longitudinal sectional view taken along line II of the attached long flexible substrate, and FIG. 3 is a partially enlarged longitudinal sectional view taken along line II-II of the elongated flexible substrate with pattern shown in FIG. 1-3, the long flexible base material 1 with a pattern of this invention has the pattern 3 in the 1st surface 2a, and a length direction is set to the 2nd surface 2b which is the back surface of the 1st surface 2a. A long flexible substrate 2 having an array of convex bodies 5 along the direction indicated by arrows a in FIGS. 1 and 3 is wound around a winding core (not shown). In the illustrated example, the pattern forming regions 4 having a predetermined width on which the patterns 3 are formed are arranged on the first surface 2a of the long flexible substrate 2 at a constant pitch along the length direction. In addition, the convex body 5 includes the side ends 2c and 2c in the width direction of the long flexible base material 2 (the direction indicated by the arrow b in FIGS. 1 and 2) and the pattern formation region 4 of the long flexible base material 2. Are arranged in regions 2'b and 2'b on the second surface corresponding to. And the length L of the convex-shaped body 5 arranged in the long flexible base material 2 is longer than the length S of the space | interval 6 of the convex-shaped bodies 5 adjacent in the length direction of the long flexible base material 2. FIG. It ’s a big one. The height H of the convex body 5 is, for example, 1 μm or more larger than the thickness T of the pattern 3. Thereby, even if the long flexible base material 2 which has the pattern 3 is wound and it exists in a winding state, a micro gap | interval can be produced reliably between the surfaces where the long flexible base material 2 overlaps.

In addition, the tension at the time of winding can be suitably set, for example in the range of 10-200 N / mm < ² >. The tension in this case is obtained by dividing the tension applied to the long flexible substrate 2 by the area of the cross section along the lateral direction of the long flexible substrate 2.
As described above, the length L of the convex bodies 5 arranged on the long flexible substrate 2 is the length of the interval 6 between the convex bodies 5 adjacent in the length direction of the long flexible substrate 2. It is larger than S. When such a relationship between the length L of the convex body 5 and the length S of the interval 6 is not established, for example, when the second surface 2b is wound in an inner winding state, the long flexible base material The two long flexible substrates 2 on the inner peripheral side that overlap with each other enter the interval 6 of the convex body 5 of the long flexible substrate 2 on the outer peripheral side by the winding stress, and the pattern 3 and the long flexible base on the outer peripheral side There is a possibility that the second surface 2b of the material 2 may come into contact, which is not preferable.

  The length L of the convex body 5 can be set, for example, in the range of 0.5 to 500 mm, preferably 1 to 100 mm. The length S of the interval 6 between the adjacent convex bodies 5 is, for example, The thickness can be set in the range of 0.05 to 400 mm, preferably 0.1 to 80 mm. In particular, the length L of the convex body 5 is the innermost long flexible substrate 2 that is wound and wound, and the second surface 2b of the long flexible substrate 2 that overlaps the outer peripheral side. It is necessary to set so that there is at least one space 6 between the convex bodies 5 between the two. Thereby, it can pass through the micro clearance gap formed between the surfaces which overlap in a winding state, and the exterior. Further, if the length S of the interval 6 between the convex bodies 5 exceeds 400 mm, even if the above relationship is established between the length L of the convex body 5 and the length S of the interval 6, the long flexible Depending on the thickness and material of the base material 2, the long flexible base material 2 on the inner peripheral side where the long flexible base material 2 that is wound and wound is overlapped with the long flexible base material 2 on the outer peripheral side. It is not preferable because the pattern 3 and the second surface 2b of the long flexible substrate 2 on the outer peripheral side may come into contact with the interval 6 of the shaped body 5 due to the tightening stress. Usually, each array of the convex bodies 5 located in the region portions 2'b and 2'b is the same, that is, the length L of the convex bodies 5 in both arrays is the same, and the adjacent convex bodies 5 are adjacent to each other. The length S of the interval 6 is the same, but the length L of the convex body 5 and the length S of the interval 6 between adjacent convex bodies 5 may be set differently for each arrangement.

The length L of the convex body 5 is not constant in the height direction. For example, when both end faces in the length direction are inclined, the length L of the convex body 5 is Length. In such a case, the length S of the interval 6 between the convex bodies 5 adjacent in the length direction is the length between the outermost surfaces of the adjacent convex bodies 5.
As described above, the height H of the convex bodies 5 arranged on the second surface of the long flexible substrate 2 can be set to be 1 μm larger than the thickness T of the pattern 3, for example. The thickness may be set to be larger than the thickness T of the pattern 3 in the range of 10 to 300 μm. When the difference between the height H of the convex body 5 and the thickness T of the pattern 3 is less than 1 μm, it becomes difficult to uniformly control the moisture content of the long flexible substrate 1 with a pattern, and the winding state In this case, the pressing force acts on the pattern, which may cause defects such as pattern damage, position shift, and dropout.

  Further, the width of the convex body 5 can be appropriately set in consideration of the widths of the regions 2'b and 2'b, the height H of the convex body 5, and the material of the convex body 5. , 50 to 20000 μm, preferably 10 to 10,000 μm. The width of the convex body 5 is not constant in the height direction. For example, when the cross section has a trapezoidal shape, the width of the convex body 5 is a width at a half of the height.

  FIG. 4: is a figure which shows other embodiment of the elongate flexible base material with a pattern of this invention, and is a partial top view of the elongate flexible base material with a pattern of the extended state. In the long flexible base material 1 ′ with a pattern shown in FIG. 4, two pattern forming regions 4 </ b> A and 4 </ b> B are set with an interval in the width direction of the long flexible base material 2. In these pattern formation regions 4A and 4B, patterns 3 and 3 are formed at a constant pitch on the first surface 2a along the length direction of the long flexible base material 2. And the convex-shaped body 5 is the area | region of the 2nd surface equivalent between each side edge 2c, 2c of the width direction of the elongate flexible base material 2, and pattern formation area | region 4A, 4B of the elongate flexible base material 2. FIG. 2'b, 2'b and the second surface area 2 "b corresponding to the area between the pattern forming area 14A and the pattern forming area 14B. Thus, the areas 2'b, 2 In addition to ′ b, the region 2 ″ b also has an array of convex bodies 5 so that a minute gap can be more reliably formed between the overlapping surfaces of the long flexible substrate that is wound and wound. Can be generated. In addition, in the long flexible base material 1 ′ with a pattern shown in FIG. 5, the same members as those of the long flexible base material 1 with a pattern described above are denoted by the same member numbers, and the description thereof is omitted.

In the above-mentioned long flexible base material 1 ′ with pattern, the length L of the convex body 5 of the convex body 5 arranged in the regions 2′b and 2′b, and the interval 6 between the adjacent convex bodies 5 The length S may be the same as the length L of the convex bodies 5 arranged in the region 2 ″ b and the length S of the interval 6 between the adjacent convex bodies 5 or different. There may be.
If the long flexible base material 2 which comprises the long flexible base materials 1 and 1 'with a pattern of this invention is a resin base material which has flexibility, for example, there will be no restriction | limiting, A long flexible base material with a pattern It can select suitably according to the use of. For example, polyethylene terephthalate, polyethylene terephthalate, polycarbonate, polyimide, polyether ether ketone, polyethylene, polypropylene, polyphenylene sulfide, polyether imide, cellulose triacetate, cyclic polyolefin, polymethyl methacrylate, polysulfone, polyamide imide, norbornene resin, allyl ester Resin base materials, such as resin, can be mentioned. Moreover, the resin base material of the laminated structure which consists of 2 or more types of these resin base materials may be sufficient.

As the long flexible base material 2, a resin base material having a humidity expansion coefficient of 2 × 10 ⁻⁵ /% RH or less, preferably 5 × 10 ⁻⁶ /% RH or less is preferable because the amount of dimensional change due to humidity change is small. In addition, a resin base material having a linear expansion coefficient of 2 × 10 ⁻⁵ / ° C. or less, preferably 5 × 10 ⁻⁶ / ° C. or less is preferable because it has a small amount of dimensional change due to temperature change. As such a resin base material, for example, polyethylene terephthalate and polyethylene terephthalate are particularly preferable among the above resin base materials. Moreover, when transparency is required for the long flexible base material 2 from the use of the long flexible base material with a pattern, a resin base material can be appropriately selected according to the required transparency.
The thickness of the long flexible substrate 2 can be appropriately set according to the use of the long flexible substrate with a pattern, and can be set, for example, within a range of 1 μm to 1 mm, preferably 10 μm to 500 μm. When the thickness of the long flexible substrate 2 exceeds 1 mm, the flexibility is lowered and the folds are likely to be broken, and when it is less than 1 μm, there is no strain, and the pattern forming process and the long flexible with pattern are performed. It is not preferable because workability is lowered in the processing step using the base material.
Further, the width of the long flexible substrate 2 is not particularly limited, and can be appropriately set according to the pattern forming region 4 or the pattern forming scheduled regions 4A and 4B to be defined, and is, for example, 100 to 1000 mm, preferably 150 to It can be set within a range of 600 mm.

  The convex body 5 constituting the patterned long flexible base material 1, 1 ′ of the present invention has a strength that does not cause breakage, crushing, etc. due to the tightening stress of the long flexible base material 2 in a wound state. Any material may be used, and for example, it may be formed of one or a combination of two or more of polyimide, acrylic resin, novolac resin, and the like. The convex body 5 can be formed by, for example, a dispenser method, a photolithography method, a screen printing method, or the like.

Next, an example is given and demonstrated about the pattern of the long flexible base material with a pattern of this invention.
5-8 is a figure which shows other embodiment of the elongate flexible base material with a pattern of this invention, and is a fragmentary sectional view of the elongate flexible base material with a pattern of the extended state.
In FIG. 5, the long flexible base material 11 with a pattern has a pattern 13 on the first surface 12a along the length direction of the long flexible base material 12, and an array of convex bodies 15 on the second surface. A long flexible substrate 12 having a winding is wound around a winding core (not shown). In the long flexible base material 11 with a pattern, the pattern 13 includes a red pattern 13R, a green pattern 13G, and a blue pattern 13B that constitute a color filter.
Moreover, in the long flexible base material 11 with a pattern shown by FIG. 6, the pattern 13 is the black matrix 13 located between the red pattern 13R, the green pattern 13G, and the blue pattern 13B which comprise a color filter, and these coloring patterns. _{It consists of BM} .
Moreover, in the long flexible base material 11 with a pattern shown in FIG. 7, the pattern 13 includes a red pattern 13R, a green pattern 13G, and a blue pattern 13B that constitute a color filter, and an overcoat layer 13 that covers these colored patterns. _{It consists of OC} .
Furthermore, in the long flexible base material 11 with a pattern shown in FIG. 8, the pattern 13 includes a red pattern 13R, a green pattern 13G, and a blue pattern 13B that constitute a color filter, and a black matrix 13 positioned between these colored patterns. _It consists of _BM and an overcoat layer 13 _OC covering the coloring pattern and the black matrix.
Note that the convex body 15 in the long flexible base material 11 with the pattern is the same as the convex body 5 in the long flexible base material 1 with the pattern, and the description thereof is omitted here.

Further, the pattern of the long flexible substrate with a pattern of the present invention may be various functional layer patterns. In addition to the functional layer pattern constituting the color filter, for example, a display element for electronic paper, organic Functional layer patterns such as EL display elements, solar cell photoelectric conversion elements, wiring patterns, hard coat layers, antireflection layers, polarizing layers, and TFT elements can be exemplified.
Moreover, the pattern of the long flexible base material with a pattern of the present invention may be a laminated pattern including the functional layer as described above. Next, examples of such a laminated pattern are shown in FIGS. I will give you a description.

FIG. 9 is a view showing another embodiment of the long flexible substrate with a pattern according to the present invention, and the length direction of the long flexible substrate with the pattern in the extended state (the direction indicated by the arrow a in FIG. 9). FIG. In FIG. 9, the long flexible base material 21 with a pattern is provided with a pattern 23 that is individually independent on the first surface 22a of the long flexible base material 22 and a convex body 25 on the second surface 22b. Yes. In the long flexible base material 21 with this pattern, the long flexible base material 22 is a resin film, and each pattern 23 includes a first adhesive layer 23A and a functional layer film from the long flexible base material 22 (resin film) side. 23B, the functional layer 23C, the second adhesive layer 23D, and the release film 23E are laminated in this order, and the first adhesive layer 23A and the functional layer film 23B can be peeled, and the second adhesive layer 23D The release film 23E can be peeled off.
In addition, the convex-shaped body 25 in the long flexible base material 21 with a pattern is the same as the convex-shaped body 5 in the above-mentioned long flexible base material 1 with a pattern, and description here is abbreviate | omitted.

In the long flexible base material 21 with a pattern, the resin film that is the long flexible base material 22 can be appropriately selected from the resin base materials cited as the long flexible base material 2 described above.
The material of the first adhesive layer 23A and the second adhesive layer 23D is not particularly limited as long as it has adhesiveness and flexibility, and examples thereof include acrylic and styrene adhesive materials. be able to. Further, the thickness of the first adhesive layer 23A can be appropriately set within a range in which flexibility is not hindered. Further, the thickness of the second adhesive layer 23D can be appropriately set within a range in which flexibility is not hindered and the functional layer 23C is covered and the surface on the release film 23E side can be flattened.
The functional layer film 23B is a base film for forming the functional layer 23C, and can be appropriately selected from known resin films according to the use, characteristics, and the like of the functional layer 23C. For example, the above-described long flexible film It can also be selected from the resin base materials mentioned as the base material 2.

The functional layer 23C can be arbitrarily set, for example, a functional layer pattern constituting a color filter, a display element for electronic paper, a display element for organic EL, a photoelectric conversion element for solar cell, a wiring pattern, a hard coat layer, Examples thereof include an antireflection layer, a polarizing layer, and a TFT element.
As the release film 23E, a resin substrate similar to the resin film that is the long flexible substrate 22 can be used.
In this long flexible base material 21 with a pattern, for example, first, the peeling film 23E is peeled and removed from the second adhesive layer 23D, and the pattern 23 is attached to a desired member or the like via the second adhesive layer 23D. Then, after peeling between the first adhesive layer 23A and the functional layer film 23B, a laminated pattern including the functional layer 23C can be disposed on a member or the like as desired. In this case, the first pressure-sensitive adhesive layer so that the force required for peeling between the first pressure-sensitive adhesive layer 23A and the functional layer film 23B is greater than the force required for peeling between the second pressure-sensitive adhesive layer 23D and the release film 23E. It is possible to adjust the surface characteristics of the release film 23E in contact with the second adhesive layer 23D, such as the material of 23A and the second adhesive layer 23D, the surface characteristics of the functional layer film 23B in contact with the first adhesive layer 23A, etc. preferable.

Although there is no restriction | limiting in particular in the manufacturing method of said elongate flexible base material 21 with a pattern, For example, it can manufacture with a manufacturing method as described below with reference to FIG.
In this example, first, a long functional layer film 23B having a functional layer 23C formed thereon and a release film 23E having a second adhesive layer 23D are bonded together to produce a long laminate (FIG. 10 ( A)). In this step, the second adhesive layer 23D may be formed so as to cover the functional layer 23C formed on the long functional layer film 23B, and the release film 23E may be bonded to the second adhesive layer 23D.
Next, the long flexible base material 22 (resin film) in which the first adhesive layer 23A is formed on the first surface 22a is bonded to the above-described long laminate (FIG. 10B). In this step, the first adhesive layer 23A may be formed on the long functional layer film 23B, and the long flexible base material 22 (resin film) may be bonded to the first adhesive layer 23A.

Next, half cut processing is performed on the first adhesive layer 23A from the release film 23E side, and then unnecessary portions are removed from the long flexible base material 22 (resin film), whereby the long flexible base material is obtained. Individual patterns 23 are formed on 22 (resin film) (FIG. 10C). Half-cut processing can be performed, for example, by punching, laser cutting, cutter knife cutting, or the like.
Subsequently, the convex-shaped body 25 is formed in the 2nd surface 22b of the elongate flexible base material 22 (resin film), and the elongate flexible base material 21 with a pattern is obtained (FIG.10 (D)). The convex body 25 can be formed by a dispenser method, a photolithography method, a screen printing method, or the like using the material mentioned as the convex body 5 described above. Moreover, you may perform the formation of the convex-shaped body 25 before said half cut process.

FIG. 11 is a diagram showing another embodiment of the long flexible substrate with a pattern according to the present invention. The length direction of the long flexible substrate with the pattern in the extended state (the direction indicated by the arrow a in FIG. 11) FIG. In FIG. 11, the long flexible base material 31 with a pattern is provided with an independent pattern 33 on the first surface 32a of the long flexible base material 32, and a convex body 35 on the second surface 32b. Yes. In this long flexible base material 31 with a pattern, the long flexible base material 32 is a release film, and each pattern 33 has a second adhesive layer 33A and a functional layer 33B from the long flexible base material 32 (release film) side. The functional layer film 33C, the first adhesive layer 33D, and the resin film 33E are laminated in this order, and the long flexible base material 32 (release film) and the second adhesive layer 33A can be peeled off. The layer film 33C and the first adhesive layer 33D can be peeled off.
In addition, the convex-shaped body 35 in the long flexible base material 31 with a pattern is the same as the convex-shaped body 5 in the above-mentioned long flexible base material 1 with a pattern, and description here is abbreviate | omitted.

In this long flexible base material 31 with a pattern, the release film which is the long flexible base material 32 can be appropriately selected from the resin base materials mentioned as the long flexible base material 2 described above.
The material of the second adhesive layer 33A and the first adhesive layer 33D is not particularly limited as long as it has adhesiveness and flexibility, and examples thereof include acrylic and styrene adhesive materials. be able to. In addition, the thickness of the second adhesive layer 33A is appropriately set within a range in which the flexibility is not hindered and the surface on the long flexible substrate 32 side can be flat while covering the functional layer 33B. Can do. In addition, the thickness of the first adhesive layer 33D can be appropriately set within a range in which flexibility is not hindered.
The functional layer 33B can be arbitrarily set, for example, a functional layer pattern constituting a color filter, a display element for electronic paper, a display element for organic EL, a photoelectric conversion element for solar cell, a wiring pattern, a hard coat layer, Examples thereof include an antireflection layer, a polarizing layer, and a TFT element.
The functional layer film 33C is a base film for forming the functional layer 33B, and can be appropriately selected from known resin films according to the use, characteristics, etc. of the functional layer 33B. For example, the above-described long flexible film It can also be selected from the resin base materials mentioned as the base material 2.
The resin film 33E has a function as a protective film for the pattern, and a resin substrate similar to the release film that is the long flexible substrate 32 can be used.

  In the long flexible substrate 31 with a pattern, for example, first, the pattern 33 is peeled between the long flexible substrate 32 (release film) and the second adhesive layer 33A, and the pattern 33 is removed from the long flexible substrate 32 ( The pattern 33 is attached to a desired member or the like via the second adhesive layer 33A. In this state, the functional layer 33B and the functional layer film 33C of the pattern 33 are protected by the resin film 33E. Thereafter, the resin film 33E can be removed by peeling between the functional layer film 33C and the first adhesive layer 33D at an appropriate time. In this case, the force required for peeling between the long flexible substrate 32 (release film) and the second adhesive layer 33A is smaller than the force required for peeling between the functional layer film 33C and the first adhesive layer 33D. In addition, the second adhesive layer 33D and the first adhesive layer 33D, the material of the second adhesive layer 33D, the surface characteristics of the long flexible substrate 32 (release film) that contacts the second adhesive layer 33A, etc. It is preferable to adjust the surface characteristics and the like of the functional layer film 33C in contact therewith.

Although there is no restriction | limiting in particular in the manufacturing method of said elongate flexible base material 31 with a pattern, For example, it can manufacture with a manufacturing method as described below with reference to FIG.
In this example, first, a long functional layer film 33C on which a functional layer 33B is formed and a resin film 33E having a first adhesive layer 33D are bonded together to produce a long laminate (FIG. 12 ( A)). In this step, the first adhesive layer 33D may be formed on the back surface of the long functional layer film 33C on which the functional layer 33B is formed, and the resin film 33E may be bonded to the first adhesive layer 33D.
Next, the long flexible base material 32 (release film) in which the second adhesive layer 33A is formed on the first surface 32a is bonded to the above-described long laminate (FIG. 12B). In this step, the second adhesive layer 33A is formed on the long functional layer film 33C so as to cover the functional layer 33B, and the long flexible substrate 32 (release film) is pasted on the second adhesive layer 33A. You may combine them.
Next, half-cut processing is performed on the second adhesive layer 33A from the resin film 33E side, and then unnecessary portions are removed from the long flexible base material 32 (release film), thereby the long flexible base material 32. An independent pattern 33 is formed on the (release film) (FIG. 12C). Half-cut processing can be performed, for example, by punching, laser cutting, cutter knife cutting, or the like.

  Subsequently, the convex-shaped body 35 is formed in the 2nd surface 32b of the elongate flexible base material 32 (release film), and the elongate flexible base material 31 with a pattern is obtained (FIG.12 (D)). The convex body 35 can be formed by a dispenser method, a photolithography method, a screen printing method, or the like using the material mentioned as the convex body 5 described above. Moreover, you may perform the formation of the convex-shaped body 25 before said half cut process.

  In such a long flexible substrate 1, 1 ', 11, 21, 31 with a pattern of the present invention, the length and interval of the convex bodies arranged on the second surface are set to have a predetermined relationship. Since the height of the convex body is larger than the thickness of the pattern located on the first surface, a minute gap is generated between the overlapping surfaces of the long flexible base material in the wound state, and this gap is Because it communicates with the outside, the long flexible substrate with a pattern comes into contact with the environmental atmosphere at the winding core side and the winding outside, and at both ends and the center in the width direction of the long flexible substrate. The conditions are uniform. This makes it possible to uniformly control the moisture content of the long flexible substrate with a pattern in a wound state, prevents a decrease in processing accuracy due to a dimensional change, and processes with a pattern or with respect to a pattern. Processing can be performed with high accuracy. In addition, the pressing force applied to the pattern in the winding state is alleviated and suppressed by the convex body, so that the so-called pattern set-off is prevented, and the occurrence of defects such as pattern damage, positional deviation, and dropout is prevented. The pattern can be securely held. Therefore, for example, in order to prevent set-off, a release paper that has been conventionally wound on a long flexible base material after pattern formation becomes unnecessary.

The above-described embodiments of the present invention are examples, and the present invention is not limited to these embodiments. For example, for the purpose of preventing charging of the long flexible substrate with a pattern, the convex body may contain conductive particles, or the convex body may have a conductive film on the surface. When the convex body contains conductive particles, examples of the conductive particles include carbon black, metal fine particles such as silver fine particles, copper fine particles, ITO (indium tin oxide) fine particles, titanium fine particles, and the like. Such conductive particles can be contained in the convex body in the range of 0.1 to 10% by weight. Moreover, when a convex-shaped body equips the surface with a conductive film, for example, the conductive film can be formed so as to cover the convex-shaped body using a paste containing the conductive particles described above.
The long flexible base material 2 is obtained by subjecting the second surface 2b to a desired treatment such as corona treatment, plasma treatment, or UV treatment in accordance with the handleability at the processing stage, the purpose of use, and the like. May be.
Further, the number of pattern forming regions that are present in the width direction on the first surface of the long flexible substrate may be three or more, and in this case, among the plurality of pattern forming regions, Convex-shaped bodies can be arranged in the area of the second surface corresponding to any pattern forming area.

Next, the present invention will be described in more detail by showing specific examples.
[Example]
A polyethylene terephthalate film (Cosmo Shine A4100 manufactured by Toyobo Co., Ltd.) having a length of 200 m, a width of 33 cm, and a thickness of 125 μm was prepared as a long flexible substrate.
A photosensitive resin material (color resist material manufactured by DNP Fine Chemical Co., Ltd.) was applied to one surface (first surface) of the long flexible substrate by a die coating method. Next, the coating film is exposed (irradiation light quantity: 100 mJ / cm ² ) through an exposure mask having an opening having a desired pattern, and developed to form a pattern (length 7.5 cm, width 15 cm, thickness 1 μm), The central portion in the width direction of the long flexible substrate was formed with a pitch of 20 cm along the length direction.

On the other hand, two rows of array regions of convex bodies were set on the other surface (second surface) of the long flexible substrate. This arrangement | positioning area | region was made into the area | region corresponded between each side end of the width direction of a elongate flexible base material, and said pattern. Then, after forming the above pattern, the solder paste for flexibility (FC-HARD manufactured by Taiyo Ink Manufacturing Co., Ltd.) is supplied and cured to each of the above array regions on the second surface of the long flexible substrate by the screen printing method. Then, a convex body having a length L of 20 mm and a width of 8000 μm is formed at a constant pitch so that the length S of the adjacent spacing along the length direction of the long flexible base material is 3 mm. Arranged. As described above, the distance between the rows of the convex bodies arranged in each arrangement region and located on both sides of the pattern was 30 cm. Then, the long flexible base material in which the convex bodies are arranged in this way is wound on the winding core having an outer diameter of 76.2 mm and an outer periphery of 239.3 mm, and the second surface (formation surface of the convex body) is placed on the inner side. As a result, a long flexible substrate with a pattern (samples 1 to 9) was produced. The tension during winding was 50 N / mm ² .

In addition, the length L of one convex shape body is 3 mm, the length S of the distance between adjacent convex shape bodies along the length direction of the long film is 20 mm (L <S), and at a constant pitch. A long flexible substrate with a pattern (sample 10) was produced in the same manner as described above except that the arrangement was made.
The produced long flexible base material (samples 1 to 10) has a protruding height (difference between the height of the convex body and the thickness of the pattern (1 μm)) in which the convex bodies arranged are shown in Table 1. It was what had. The height of the convex body and the measurement of the thickness of the pattern were performed using a laser interference film thickness measuring device manufactured by Zygo Corporation.

(Evaluation)
These 10 types of patterned long flexible substrates are stored in a wound state in an environment of 23 ° C. and 45% RH for 7 days, and then the wound flexible substrate is wound from the wound state in the same environment as when stored. The moisture content immediately after feeding out was measured, the variation in moisture content [| environmental humidity−measured humidity | / environmental humidity × 100] was calculated, and evaluated according to the following evaluation criteria. The results are shown in Table 1. The moisture content was measured using a transmission moisture meter (RX-100, manufactured by Kurabo Industries Co., Ltd.), and in the width direction of the long flexible substrate, two locations at 4 cm inward from both ends were used. It was performed at a pitch of 1 m in a total of three locations with the central portion, in the length direction.
(Evaluation criteria)
A: Variation in moisture content is 0.01% by weight or less,
Uniform control of the moisture content of the long film is easy.
○: Although the variation in water content exceeds 0.01% by weight, 0.03% by weight
The following is the uniform control of the moisture content of the long film for pattern formation.
Is possible.
X: Variation in moisture content exceeds 0.03% by weight, and is long for pattern formation
It is difficult to uniformly control the moisture content of the film.

表１に示される結果から、配列した凸形状体の突出高さが１μｍ以上であるパターン付き長尺フレキシブル基材では、均一な含水率の制御が可能なことが確認された。
一方、凸形状体の１個の長さＬが、隣接する凸形状体同士の間隔の長さＳよりも小さい場合には、パターン付き長尺フレキシブル基材の含水率の均一な制御は困難であった。

From the results shown in Table 1, it was confirmed that a uniform moisture content can be controlled in a long flexible substrate with a pattern in which the protruding heights of the arranged convex bodies are 1 μm or more.
On the other hand, when the length L of one convex body is smaller than the length S of the interval between adjacent convex bodies, it is difficult to uniformly control the moisture content of the long flexible substrate with a pattern. there were.

  It is useful for manufacturing products that have a variety of processes for forming a pattern on a long flexible substrate and then processing the pattern or integrating the pattern with another long flexible substrate or member. .

DESCRIPTION OF SYMBOLS 1,1 ', 11,21,31 ... Long flexible base material with a pattern 2, 12, 22, 32 ... Long flexible base material 2a, 12a, 22a, 32a ... 1st surface 2b, 12b, 22b, 32b ... Second surface 3,13,23,33 ... Pattern 4,4A, 4B ... Pattern forming area 5,15,25,35 ... Convex shaped body 6,16,26 ... Interval of convex shaped body

Claims (9)

  A long flexible base material is wound, the first surface of the long flexible base material has a plurality of patterns along the length direction of the long flexible base material, and the back surface of the first surface A plurality of convex bodies arranged along the length direction of the long flexible base material in a region corresponding to the second surface and outside the pattern formation region of the first surface, The long flexible substrate with a pattern is characterized in that the lengthwise dimension of the long flexible base material of the convex body is larger than the interval between the convex bodies adjacent in the length direction of the long flexible base material. .   The array of the convex bodies is an area corresponding to the second surface of the long flexible base material between each side end in the width direction of the long flexible base material and the pattern formation region of the first surface. The long flexible base material with a pattern according to claim 1, wherein the long flexible base material has a pattern.   A plurality of the pattern formation regions are provided at intervals in the width direction of the first surface of the long flexible substrate, and the array of the convex bodies is the second surface of the long flexible substrate, The long flexible base material with a pattern according to claim 1 or 2, wherein the long flexible substrate with a pattern is also located in a region corresponding to the space between the pattern forming regions in the width direction of one surface.   The long flexible substrate with a pattern according to any one of claims 1 to 3, wherein the convex body contains conductive particles.   The long flexible substrate with a pattern according to any one of claims 1 to 3, wherein the convex body has a conductive film on a surface thereof.   The long flexible substrate is a resin film, and the pattern is a pattern in which a first adhesive layer, a functional layer film, a functional layer, a second adhesive layer, and a release film are laminated in this order from the resin film side. The pattern according to any one of claims 1 to 5, wherein the first adhesive layer and the functional layer film are peelable, and the second adhesive layer and the peelable film are peelable. A long flexible substrate with a base.   The long flexible with a pattern according to claim 6, wherein the force required for peeling between the first adhesive layer and the functional layer film is larger than the force required for peeling between the second adhesive layer and the release film. Base material.   The long flexible substrate is a release film, and the pattern is a pattern in which a second adhesive layer, a functional layer, a functional layer film, a first adhesive layer, and a resin film are laminated in this order from the release film side. The pattern according to any one of claims 1 to 5, wherein the release film and the second adhesive layer are peelable, and the functional layer film and the first adhesive layer are peelable. A long flexible substrate with a base.   The long flexible with a pattern according to claim 8, wherein the force required for peeling between the release film and the second adhesive layer is smaller than the force required for peeling between the functional layer film and the first adhesive layer. Base material.

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