TW201607904A - Method for manufacturing composite and method for manufacturing laminate - Google Patents

Abstract

The invention provides a method for manufacturing composite and method for manufacturing laminate. The manufacturing method can prevent cracks of glass sheet cutting a composite binding the glass sheet and the resin layer and a laminate body laminated from the second glass sheet of the composite body; and the composite body and the laminate body preventing glass cracks and having desired shapes are manufactured.

Description

Manufacturing method of composite and manufacturing method of laminated body

The present invention relates to a method for producing a composite having a resin layer on a glass sheet, and a method for producing a laminate in which a second glass sheet is laminated on a resin of the composite.

In recent years, thinner and lighter electronic devices (electronic devices) such as solar cells (PV), liquid crystal panels (LCDs), and organic EL (Electroluminescence) panels (OLEDs) have been increasingly promoted. As one of methods for reducing the thickness and weight of the electronic device, the thinning of the substrate for the electronic device is promoted.

Moreover, it is also expected to be practical to use a flexible electronic device by using a glass substrate (glass plate) of a thin plate.

However, the strength of the glass piece is insufficient, and when it is bent and deformed, breakage such as cracking may occur.

On the other hand, for example, Patent Document 1 proposes a composite in which a resin layer is attached to a glass sheet. In the case of such a composite, even if the composite is bent and deformed, tensile stress is generated on the surface of the glass sheet attached to the resin layer, and the tensile stress can be reduced by the resin layer, and the breakage of the glass sheet can be suppressed. .

In the manufacture of electronic devices, in the case of such composites, the composite must be cut to the desired size or shape as desired.

As a method of cutting such a composite, Patent Document 2 exemplifies a method of forming a scribe line having a thickness of 10% or more and less than 100% on a surface of a glass sheet (brittle material substrate) opposite to the resin layer. , the position of the scribe line extending in the thickness direction in the resin layer The slit was drawn until the composite was cut with respect to a thickness of 90% or more and not reaching the position of the glass piece.

In addition, in the case of the glass sheet (brittle material substrate), a surface protection member (resin film or the like) for preventing adhesion of glass swarf is attached to the ridge of the blade edge. A grooved cutter wheel is formed, by which the surface protection member is cut from the surface protection member side by cutting the scribe line to be broken, thereby cutting the glass piece.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] International Publication No. 2012/166343

[Patent Document 2] Japanese Patent No. 4918064

[Patent Document 3] Japanese Patent No. 4198601

According to these methods, a composite in which a glass sheet is formed into a resin layer can be cut into a desired size.

However, according to the study by the present inventors, in the cutting method of the prior composite, when the glass sheet is cut (broken) starting from the scribing, it is often the case that cracks (cracks) are generated in the glass sheet, which The rupture is enlarged on the main surface of the glass sheet, and the product becomes defective. In particular, when the glass piece is thin, the problem of cracking of the glass piece is likely to occur.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the prior art by providing a composite of a glass sheet followed by a resin layer and a method of manufacturing the laminate of the composite followed by a glass sheet, which is thinner if used. In the case of the glass sheet, when the composite is cut (breaking the glass sheet), cracking of the glass sheet can be suppressed from being expanded, and a composite having a desired size or shape and inhibiting cracking of the glass sheet can be stably produced. Body or laminate.

In order to achieve the above object, the present invention provides a method for producing a composite characterized by having a glass sheet and an adhesive force having a peel strength of 1 N/25 mm or more at 180°, followed by the glass sheet, the distance, and the glass sheet. In the initial composite of the resin layer having a Young's modulus of 100 MPa or more and a thickness of 1 to 100 μm in the region where the normal direction is 0 to 0.5 μm, The above-mentioned resin layer is passed through to form a scribe line, and the initial composite body is cut by using the scribe line as a starting point to produce a composite body.

In the method for producing a composite of the present invention, it is preferable that the thickness of the glass sheet is 100 μm or less.

Moreover, the present invention provides a method for producing a laminated body, comprising: forming a first glass sheet and an adhesive force having a 180° peel strength of 1 N/25 mm or more, followed by the first glass sheet, the distance, and the first In the initial composite of the resin layer having a Young's modulus of 100 MPa or more and a thickness of 1 to 100 μm in the region where the normal direction is 0 to 0.5 μm, the area of the main surface is smaller than that of the above resin layer. The second glass piece of the surface is laminated on the resin layer so as to surround the outer surface of the main surface of the resin layer in the outer periphery of the main surface of the second glass piece, and then the initial laminated body is formed. The initial laminate is formed by dicing the first glass sheet through the resin layer along the outer periphery of the main surface of the second glass sheet, and cutting the initial composite from the scribe line to form a laminate body.

In the method for producing such a laminate, it is preferred that the end face of the laminate is chamfered after the initial composite is cut.

Further preferably, the thickness of the first glass sheet is 100 μm or less.

According to the present invention, the composite body in which the glass sheet is followed by the resin layer and the laminate in which the composite volume layer is formed on the glass sheet can be suppressed even when the glass sheet is thin. The crack generated by the glass sheet is enlarged at the time of cutting.

Therefore, according to the present invention, a composite or a laminate having a desired size or shape which sufficiently suppresses cracking of the glass sheet can be stably produced.

10‧‧‧Compound

10a‧‧‧ initial complex

12‧‧‧Stainless glass

14‧‧‧ resin layer

18‧‧‧dick

20‧‧‧Cutter

30‧‧‧Layered body

30a‧‧‧Integrated laminate

34‧‧‧2nd glass piece

1(A) to 1(D) are conceptual views for explaining an example of a method of producing a composite of the present invention.

2(A) to 2(E) are conceptual views for explaining an example of a method of manufacturing a laminated body of the present invention.

Hereinafter, a method for producing a composite of the present invention and a method for producing a laminate will be described in detail based on preferred examples shown in the accompanying drawings.

Fig. 1 conceptually shows an example of a method of producing a composite of the present invention.

The method for producing a composite according to the present invention is to form a composite of a desired size or shape (size or shape of a main surface) by cutting (dividing) the initial composite 10a in which the resin layer 14 is formed on one surface of the glass sheet 12. 10.

In the manufacturing method of the composite of the present invention, the initial composite 10a (i.e., the manufactured composite 10) is one side of the glass sheet 12 (one main surface (surface) as conceptually shown in Fig. 1(A) )) The resin layer 14 is formed. Further, in the example shown in Fig. 1, the shape of the main surface of the initial composite 10a is rectangular as an example.

As the glass of the glass piece 12 which becomes the board|substrate (substrate) of the initial composite 10a, the well-known various glass can be utilized. Specifically, soda lime glass, alkali-free glass, etc. are illustrated. Further, the glass sheet 12 can be produced by a known method such as a float method, a melting method, or a re-drawing method.

The thickness of the glass sheet 12 may be a thickness corresponding to the use of the composite 10 to be manufactured.

Here, the composite 10 (layered body 30) manufactured by the manufacturing method of the present invention can be used as an example for the production of electronic devices such as a solar cell (PV), a liquid crystal panel (LCD), and an organic EL panel (OLED). The electronic devices are required to be thinner or lighter, and then Look for developments that require flexibility. If this aspect is considered, the thinner the glass sheet 12 is within the range in which the electronic device can be fabricated.

On the other hand, as described below, according to the manufacturing method of the present invention, it is possible to manufacture a composite in which the crack of the glass sheet 12 generated when the initial composite 10a is cut is suppressed from expanding, and there is no defect due to the crack of the glass sheet 12. The thinner the glass sheet 12, the more likely the cracking and the expansion of the crack when the initial composite 10a is cut.

In other words, when the glass sheet 12 is made thinner in consideration of the flexibility of the product of the composite 10 such as an electronic device, the glass sheet 12 is easily broken. However, according to the present invention, even when the glass sheet 12 is made thinner. It is also preferable to suppress cracking. In consideration of this aspect, the thickness of the glass piece 12 is preferably 100 μm or less, more preferably 75 μm or less, and still more preferably 50 μm or less.

Further, the thickness of the glass piece 12 may be equal to or greater than the thickness of the composite 10 (the laminated body 30) to ensure the necessary strength.

Specifically, the thickness of the glass piece 12 is preferably 1 μm or more, and more preferably 10 μm or more.

The glass sheet 12 may be used to lift the adhesion of the resin layer 14 or the like, or may be subjected to surface treatment on the surface on which the resin layer 14 is formed before the resin layer 14 is formed.

As the surface treatment, a primer treatment, an ozone treatment, a plasma etching treatment, or the like can be exemplified. As the primer, a decane coupling agent can be exemplified. Examples of the decane coupling agent include amino decanes, epoxy decanes, alkoxy decanes, and decazanes.

The resin layer 14 is formed on the surface of the glass piece 12 in the initial composite 10a (i.e., the manufactured composite 10).

The resin layer 14 is a layer (film) containing various resin materials. Further, the initial composite body 10a-based resin layer 14 shown in Fig. 1 is formed of one layer, but the resin layer 14 may be formed of a plurality of layers as long as the total thickness is 1 to 100 μm. Further, when the resin layer 14 is formed of a plurality of layers, all of the layers may be formed of the same material, or a layer containing different materials may be mixed. Further, when the resin layer 14 is formed of a plurality of layers, the thickness of each layer may be the same or different.

Furthermore, the initial composite 10a shown in FIG. 1 is formed on the entire surface of the glass sheet 12 to form a tree. The lipid layer 14 may not be formed on the entire surface of the glass sheet 12 as long as it has a sufficient area corresponding to the size or shape of the composite 10 to be manufactured.

Here, in the manufacturing method of the present invention, the resin layer 14 has a thickness of 1 to 100 μm, and a Young's modulus of a region of 0 to 0.5 μm from the interface with the glass sheet 12 in the normal direction is 100 MPa or more. . Further, the resin layer 14 is bonded to the glass piece 12 with an adhesive force of 180° peeling strength of 1 N/25 mm or more.

In the present invention, the initial composite 10a in which the resin layer 14 is formed on the surface of the glass sheet 12 is used, and the scribe line 18 is formed on the glass sheet 12 from the resin layer 14 side, and the initial composite 10a is cut, whereby even When the glass sheet 12 is thin, it is also possible to suppress the crack generated by the glass sheet 12 from being enlarged on the main surface of the glass sheet 12 during cutting, and to stably produce a desired size or shape and to rupture the glass sheet 12. The composite 10 having the glass flakes 12 is inhibited. This aspect will be described in detail below.

The resin layer 14 can be formed of various known resin materials (polymer materials). For example, both a thermoplastic resin and a thermosetting resin can be used.

Examples of the thermosetting resin include polyimine (PI), epoxy resin (EP), and the like. As the thermoplastic resin, polyamine (PA), polyamidoximine (PAI), polyetheretherketone (PEEK), polybenzimidazole (PBI), polyethylene terephthalate (PET) can be exemplified. ), polyethylene naphthalate (PEN), polyether oxime (PES), cyclic polyolefin (COP), polycarbonate (PC), polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), acrylic resin (PMMA), urethane (PU), and the like.

Further, the resin layer 14 may be formed of a photocurable resin, or may be a copolymer or a mixture.

The manufacturing steps of the electronic device using the composite 10 (the laminated body 30) sometimes include the step accompanied by the heat treatment. Therefore, the heat resistant temperature (temperature at which continuous use) of the resin material forming the resin layer 14 is preferably 100 ° C or higher.

Examples of the resin having a heat resistance temperature of 100 ° C or higher include polyimine (PI), epoxy resin (EP), polyamine (PA), polyamidamine (PAI), and polyether ether ketone ( PEEK), polystyrene Imidazole (PBI), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyether oxime (PES), cyclic polyolefin (COP), polycarbonate (PC) , polyvinyl chloride (PVC), acrylic resin (PMMA), urethane (PU) and the like.

The resin layer 14 may be formed only of a resin material, or may contain a filler or the like.

As the filler, a non-fibrous filler such as a fiber or a plate, a scale, a pellet, an irregular shape, or a crushed product can be exemplified.

Specific examples thereof include glass fibers, PAN (Polyacrylonitrile) or pitch-based carbon fibers, stainless steel fibers, metal fibers such as aluminum fibers or brass fibers, organic fibers such as aromatic polyamide fibers, and gypsum fibers. Ceramic fiber, asbestos fiber, zirconia fiber, alumina fiber, yttria fiber, titanium oxide fiber, tantalum carbide fiber, rock wool, potassium titanate whisker, barium titanate whisker, aluminum borate whisker, tantalum nitride Whiskers, mica, talc, kaolin, strontium oxide, calcium carbonate, glass beads, glass shards, glass microspheres, clay, molybdenum disulfide, ash, titanium oxide, zinc oxide, calcium polyphosphate, graphite, metal powder, metal Debris, metal strips, metal oxides, carbon powder, black lead, carbon fragments, scaly carbon, carbon nanotubes, etc. Specific examples of the metal powder, metal fragments, metal strips, and metal oxides include silver, nickel, copper, zinc, aluminum, stainless steel, iron, brass, chromium, tin, and the like. The type of the glass fiber or the carbon fiber is not particularly limited as long as it is used for the reinforcement of a general resin. For example, a strand selected from a long fiber type or a short fiber type, a ground fiber, or the like can be used. Further, the resin layer 14 may contain a woven fabric impregnated with a resin, a non-woven fabric, or the like.

The resin layer 14 may be formed by a known method suitable for forming a material of the resin layer 14.

For example, the resin layer 14 may be formed by applying a liquid composition (coating material) containing a component forming the resin layer 14 to the surface of the glass sheet 12 and hardening it.

Alternatively, the resin layer 14 may be formed by attaching a resin film forming the resin layer 14 to the glass sheet 12. In the case where the resin film 14 is formed by attaching a resin film to the glass sheet 12, a resin film may be attached to the glass sheet 12 by using an adhesive as needed. Furthermore, in this case, it will be connected The primer layer is also regarded as a part of the resin layer 14, and as the resin layer 14 including the plurality of layers also including the adhesive layer, it is necessary to satisfy the Young's modulus and the like.

Further, the resin layer 14 may be formed by forming a layer (film) including a front material of the resin material of the resin layer 14 on the surface of the glass sheet 12, and performing heat treatment, electron beam irradiation, ultraviolet irradiation, or the like on the layer containing the precursor. The treatment is carried out to thereby form a resin layer 14 containing a target resin material. Further, in the method of forming the resin layer 14, the layer containing the precursor may be formed by applying a liquid composition on the surface of the glass sheet 12 and drying (or hardening), or may be on the surface of the glass sheet 12. It is formed by attaching a film (and an adhesive may be used as needed).

Furthermore, the method for producing the composite (layered body) of the present invention may also include the step of forming the resin layer 14 on the glass sheet 12 (or the step of performing the surface treatment described above).

The manufacturing method of the composite of the present invention is conceptually shown in Fig. 1(B), and the glass sheet 12 of the initial composite 10a is formed to be cut for the size or shape of the composite 10 to be manufactured. Line 18. As described above, since the initial composite body 10a is rectangular, the scribe line 18 extends in a direction perpendicular to the paper surface.

Here, the scribe line 18 formed on the glass piece 12 is formed from the resin layer 14 side. That is, the cutter 20 is in contact with the resin layer 14, and the resin layer 14 is penetrated (cut), and the scribe line 18 is formed in the glass sheet 12. In other words, the resin layer 14 is cut while forming the scribe line 18 to the glass sheet 12.

By performing the cutting of the resin layer 14 and the formation of the scribe lines 18 at the same time, as in the method of Patent Document 2, the two steps of cutting the resin layer 14 and forming the scribe line 18 are not required, and it is also unnecessary. The cutting position of the resin layer 14 is aligned with the formation position of the scribe line 18.

Further, in the composite 10 manufactured, the cut surface of the resin layer 14 can be satisfactorily matched with the cut surface of the glass sheet 12 (the both cut surfaces can be the same surface).

The formation of the scribe line 18 may be a known method in which the scribe line 18 is formed by penetrating the glass sheet 12 and the resin layer 14 through the resin layer 14. As an example, a method of using various cutters for resins or various cutters for glass can be exemplified.

Furthermore, as described below, in the method for producing the composite (layered body) of the present invention, The surface of the glass sheet 12 has a specific resin layer 14. Therefore, even if the scribe line 18 (the position where the scribe line 18 of the glass piece 12 is formed) has many defects such as chips, the rupture of the glass piece 12 can be suppressed from being broken on the main surface of the glass piece 12 at the time of cutting. expand. Therefore, in the manufacturing method of the present invention, it is not necessary to consider the occurrence of debris or the like in the scribe line 18, and therefore, the formation of the scribe line 18 can be performed by using the inexpensive cutter 20 or the like.

The width of the scribe line 18 (the dimension in the direction orthogonal to the direction in which the line extends) or the depth of the scribe line 18 is the same as the thickness of the glass piece 12, the material to be formed, etc., similarly to the cutting of a normal glass piece (glass plate). The width and depth of the glass sheet 12 can be surely cut by an appropriate setting.

As shown in Fig. 1(B), after the scribe line 18 is formed on the glass piece 12 of the initial composite 10a, as shown conceptually in Fig. 1(C), the surface of the glass sheet 12 on the resin layer 14 side is applied. The manner in which the stress is stretched causes the initial composite 10a to be bent. Thereby, the glass piece 12 is broken by the scribe line 18 as a starting point, and the initial composite body 10a is cut, and the composite body 10 of the target size or shape is formed as conceptually shown in FIG. In other words, the initial composite body 10a is bent by the resin layer 14 side, and the glass sheet 12 is cut by the scribe line 18 as a starting point to cut the glass piece 12, thereby forming the target size or shape of the composite body 10. .

Here, according to the method for producing a composite body (layered body) of the present invention, even when the glass piece 12 is thin, or when a large amount of debris is present in the scribe line 18, the cutting of the initial composite body 10a can be prevented. The crack (crack) of the produced glass piece 12 is enlarged (diffusion/expansion) on the main surface of the glass piece 12.

As described above, the composite formed by forming the resin layer on the glass sheet 12 is thinned or lightened, and the glass sheet 12 can be prevented from being broken even when subjected to deformation such as bending. Excellent electronic device.

Here, the composite is typically formed by cutting a larger initial composite than the target composite to form a composite of the desired size or shape. As the cutting method, a method of cutting the resin layer and further forming a scribe line on the glass piece 12 in accordance with the dicing line is considered, thereby cutting the glass piece 12. However, the method must perform two cutting processes and the position of the cutting position It takes time to align. Further, in the prior method, when the glass piece 12 is cut, the rupture of the glass piece 12 due to the swarf debris or the like is enlarged on the main surface of the glass piece 12, and in many cases, the composite body has the glass piece 12 Defects such as rupture. In particular, the crack is likely to occur when the glass sheet 12 is thin.

On the other hand, as a manufacturing method (cutting method) of a composite body having a desired shape such as position alignment or the like, it is conceivable to simultaneously perform scribing by forming a scribe line 18 through a resin layer as shown in Patent Document 3. A method of forming 18 and cutting a resin layer.

However, in the case where the scribe line 18 is formed in the glass sheet 12 along with the cutting of the resin layer, the formation of the scribe line 18 requires a certain degree of force, and the force applied to the cutter 20 is also applied to the glass sheet 12. Therefore, a large amount of defects such as debris are generated in the scribe line 18. In the prior method, if the glass sheet 12 having a large amount of chips is cut (broken) as described above, a large amount of cracks are generated in the glass sheet 12 due to defects such as the chips, and the crack is expanded to the glass sheet 12. The inner side of the main face. As a result, the obtained composite becomes a composite having defects in which the glass piece 12 is broken. Such cracking occurs particularly when the glass sheet 12 is thin.

On the other hand, in the manufacturing method of the present invention, the resin layer 14 of the initial composite 10a (that is, the composite 10) has a thickness of 1 to 100 μm, and the distance from the interface with the glass sheet 12 in the normal direction is 0 to 0.5. The Young's modulus of the region of μm is 100 MPa or more. Further, the resin layer 14 is bonded to the glass piece 12 with an adhesive force of 180° peeling strength of 1 N/25 mm or more.

Thereby, when the initial composite 10a is cut (when the glass piece 12 starting from the scribe line 18 is broken), even if the glass piece 12 is broken and stress is applied to the glass piece 12, the glass piece 12 is higher. Then, the high elastic resin layer 14 is further prevented from being broken and expanded due to stress. Therefore, it is possible to suppress the crack generated by the glass sheet 12 from being enlarged on the main surface of the glass sheet 12.

Further, by having such a resin layer 14, it is possible to prevent the glass sheet 12 from being broken by applying unnecessary stress to a position where the scribe line 18 is not formed. Therefore, the manufacturer of the composite of the present invention In the method, a complex such as a circular shape or the like can also be formed.

Therefore, according to the method for producing a composite of the present invention, the composite 10 having the desired size or shape and the crack of the glass sheet 12 can be stably produced (i.e., the composite having no crack in the effective region of the glass sheet 12) can be stably produced. 10).

In the manufacturing method of the present invention, the resin layer 14 has a thickness of 1 to 100 μm.

If the thickness of the resin layer 14 is less than 1 μm, the effect of having the resin layer 14 cannot be obtained, and there is a problem that the glass sheet 12 is broken when the scribe line 18 is formed in the initial composite body 10a, and the crack is enlarged, and at the time of cutting (breaking) At the time), cracks and the like are also generated in areas other than the scribe line 18.

In addition, when the thickness of the resin layer 14 exceeds 100 μm, the composite 10 having good flexibility cannot be obtained, and it is not possible to sufficiently respond to the request for thinning or weight reduction, and it is difficult to form the scribe line 18 or the like.

Further, the thickness of the resin layer 14 can be more preferably suppressed by suppressing cracking of the glass sheet 12, obtaining the composite 10 having good flexibility, and preferably reducing the weight or film formation of the composite. Good for 10~50μm.

The distance between the distance between the resin layer 14 and the interface of the glass sheet 12 in the normal direction (the direction orthogonal to the interface) is 0 to 0.5 μm (that is, the region on the side of the glass sheet 12 having a thickness of 0.5 μm or less). The modulus (hereinafter also referred to as "the Young's modulus of the resin layer 14") is 100 MPa or more.

When the Young's modulus of the resin layer 14 is less than 100 MPa, problems such as cracking of the glass piece 12 may occur during the dicing of the initial composite 10a.

The Young's modulus of the resin layer 14 is preferably 1000 MPa or more in terms of suppressing the breakage of the glass piece 12 and the like.

The upper limit of the Young's modulus of the resin layer 14 is not limited. Here, the Young's modulus of the resin layer 14 is preferably 50,000 MPa or less, and more preferably 10,000 MPa or less, in consideration of not reducing flexibility (not increasing bending rigidity).

The Young's modulus of the resin layer 14 may be measured by a method in accordance with JIS K 7127:1999.

In the case where the resin layer 14 (the region having a thickness of 0.5 μm or less on the side of the glass piece 12) contains a plurality of (n) layers, the Young's modulus E (Young's modulus E) of the resin layer 14 is as follows. Equation (1) can be calculated.

E=Σ(E _k ×I _k )/I. . . (1)

E _k : Young's modulus of the material of the kth layer

I _k : the second moment of the section of the kth layer

k: an integer from 1 to n

I: the second moment of the section of the glass sheet 12 side of the resin layer 14 having a thickness of 0 to 0.5 μm

As is apparent from the formula (1), even when the resin layer 14 is followed by the glass sheet 12 by the adhesive, and the adhesive is softer than the resin layer 14, the thickness of the adhesive layer is sufficiently thin. (For example, if it is 100 nm or less), the Young's modulus of the resin layer 14 becomes 100 MPa or more.

In the manufacturing method of the present invention, the resin layer 14 is bonded to the glass sheet 12 with an adhesive force of 180° peeling strength of 1 N/25 mm or more (hereinafter, simply referred to as “adhesion force of the resin layer 14”).

If the adhesive force of the resin layer 14 is less than 1 N/25 mm, there is a problem that the crack of the glass sheet 12 is enlarged when the initial composite 10a is cut, or cracking occurs in the glass sheet 12 when the initial composite 10a is cut.

The adhesive force of the resin layer 14 is preferably 3 N/25 mm or more, and more preferably 5 N/25 mm or more, in terms of suppressing the rupture of the glass piece 12 and the like.

Further, the upper limit of the adhesion of the resin layer 14 is not limited.

Further, the adhesion force (180° peel strength) of the resin layer 14 may be measured in accordance with JIS K 6854:1999.

The composite 10 of the present invention thus manufactured to a desired size and shape can be used as a substrate of an electronic device such as PV, LCD, or OLED, as described above.

Fig. 2 conceptually shows an example of a method of producing a laminated body of the present invention.

In the method for producing a laminate according to the present invention, the initial laminate 30a (the laminate of the composite) obtained by laminating the second glass sheet 34 including the initial composite 10a of the glass sheet 12 and the resin layer 14 is cut and manufactured. A laminate 30 of the desired size or shape. In the example shown in FIG. 2, the shape of the main surface of the initial composite 10a and the second glass piece 34 is rectangular as an example.

Here, as shown conceptually in FIG. 2(A), in the method of manufacturing a laminated body of the present invention, the second glass piece 34 is laminated on the resin layer 14 (the glass piece 12 and the second glass piece 34 are sandwiched). The resin layer 14). Further, the size of the second glass piece 34 is smaller than that of the resin layer 14 (the area of the main surface of the second glass piece 34 is smaller than the area of the main surface of the resin layer 14), and is wrapped in the outer periphery of the main surface of the second glass piece 34. The outer surface of the main surface of the resin layer 14 is laminated.

In the following methods for manufacturing a laminate, the same members as those of the above-described composite are used. Therefore, the same members are denoted by the same reference numerals, and the different aspects will be mainly described.

In the method for producing a laminate according to the present invention, the initial composite 10a is the same as the initial composite 10a shown in Fig. 1 described above. The initial laminated body 30a is formed by laminating the second glass piece 34 in the initial composite body 10a and attaching it (subsequently). Therefore, the glass piece 12 of the initial composite 10a becomes the first glass piece in the manufacturing method of the laminated body of this invention.

In the method for producing a laminated body according to the present invention, the initial composite 10a is cut along the outer periphery of the main surface of the second glass piece 34 to produce a laminated body 30 having a desired size and shape. Therefore, the size and shape of the second glass piece 34 are the same as those of the laminated body 30 to be manufactured.

Similarly to the above-described glass sheet 12, the glass of the second glass sheet 34 can be made of various known glass, and can be produced by a known method.

Further, in the case where the laminated body 30 to be produced is used for the purpose of performing a heating step such as heat treatment, the second glass sheet 34 is preferably formed of a material having a small difference from the linear expansion coefficient of the glass sheet 12. More preferably, it is formed of the same material as the glass piece 12.

The thickness of the second glass piece 34 may be a thickness suitable for the use of the laminated body 30 to be manufactured. Therefore, the thickness of the second glass piece 34 can be the same as that of the glass piece 12, or can be thicker or thinner than the glass piece 12.

As an example, the laminated body 30 obtained by the manufacturing method of the present invention can be used for manufacturing an electronic device such as PV, LCD, or OLED using the glass piece 12 as a substrate (a substrate (element substrate) on which an element is formed). At this time, the second glass piece 34 preferably functions as a supporting substrate (carrier substrate) which can support the thin glass piece 12 in which the element is formed and can be appropriately processed. Therefore, at this time, the thickness of the second glass piece 34 is preferably 0.2 to 1 mm, more preferably 0.4 to 0.7 mm.

The method of adhering the resin layer 14 of the initial laminated body 30a to the second glass sheet 34 can be carried out by various known methods suitable for forming the material of the resin layer 14.

As an example, a method of using an adhesive, a method of laminating by vacuum heating, or the like can be exemplified.

Further, the second glass piece 34 may be subjected to a surface treatment on the surface before the resin layer 14 is laminated for the purpose of improving the adhesion. As the surface treatment of the second glass piece 34, various surface treatments exemplified in the description of the previous glass piece 12 can be exemplified.

Further, the resin layer 14 and the second glass sheet 34 can ensure sufficient adhesion and, if necessary, the resin layer 14 and the second glass sheet 34 can be peeled off.

Furthermore, the method for producing a laminate according to the present invention may include the step of laminating the second glass sheet 34 in the initial composite 10a (or the step of performing the surface treatment described above).

As shown conceptually in FIG. 2(B), the method for producing a laminated body according to the present invention is such that the initial laminated body 30a is along the outer periphery (outer side) of the main surface of the second glass piece 34 (imitation of the second glass piece) The outer circumference of the main surface of 34 is formed by the cutter 20 to form a scribe line 18 for cutting. As described above, since the initial composite body 10a has a rectangular shape, the scribe line 18 extends in a direction perpendicular to the paper surface.

Here, similarly to the manufacturing method of the composite body shown in FIG. 1, even in the manufacturing method of the laminated body of this invention, the cutter 20 penetrates the resin layer 14, and penetrates (cuts) the resin layer 14 in the glass piece. 12 forms a scribe line 18. That is, the dicing of the resin layer 14 is performed while forming the scribe line 18 on the glass piece 12. The formation of the scribe line 18 may be performed in the same manner as the method of manufacturing the composite shown in Fig. 1 .

In addition, in FIG. 2, although the scribe line 18 extended in the perpendicular direction of the paper surface of the both sides of the horizontal direction of the 2nd glass piece 34 is illustrated, the main surface of the 2nd glass piece 34 as above. The outer circumference is wrapped around the outer surface of the main surface of the resin layer 14, so that the scribe lines 18 extending in the horizontal direction in the drawing are formed on both sides of the second glass sheet 34 in the direction perpendicular to the plane of the paper.

After the scribe line 18 is formed on the glass piece 12 of the initial laminated body 30a (initial composite 10a), the resin of the glass piece 12 is conceptually shown as shown in FIG. 2(C), similarly to the manufacture of the composite. The initial composite 10a is bent by applying a tensile stress to the surface of the layer 14 side.

Thereby, the glass piece 12 is broken by the scribe line 18 as a starting point, and the initial composite body 10a is cut, and as shown in FIG. 2(D), the layered body 30 of the target size or shape is formed.

Here, as described above, the initial composite 10a is a resin layer 14 having a specific thickness and a Young's modulus with a specific adhesion. Therefore, similarly to the method for producing a composite of the present invention, in the method for producing a laminate according to the present invention, even if the glass sheet 12 is thin, it is possible to prevent cracking of the glass sheet 12 when the initial composite 10a is cut. Expanded, and further, it can be cut into irregular shapes such as a circle. Therefore, according to the method for producing a laminate of the present invention, the laminate 30 having the desired size and shape and in which the crack of the glass sheet 12 is suppressed (the laminate 30 having no crack in the effective region of the glass sheet 12) can be produced.

In the manufacturing method of the present invention, after the initial composite 10a is cut to form the laminated body 30, the end surface (side edge portion) of the laminated body 30 is preferably poured as shown conceptually in FIG. 2(E). Angle processing.

The chamfering treatment of the laminated body 30 may be carried out by various known methods of chamfering the laminated body of the glass plate and the resin by a method using a rotating grindstone.

As an example, the method described in International Publication No. 2012/176608 can be exemplified. The chamfering method is a method of chamfering the end surface of the laminated body 30 by a disc-shaped or cylindrical rotating grindstone, and the grinding stone is obliquely abutted against the resin layer 14 and the glass sheet 12. The interface and the interface between the resin layer 14 and the second glass piece 34 are polished to perform chamfering treatment of the laminated body 30. Preferably, on the outer peripheral surface, the end surface abutting on the laminated body 30 is used. Grinding the grindstone having the grinding groove so that the interface between the resin layer 14 and the glass sheet 12 and the interface between the resin layer 14 and the second glass sheet 34 correspond to the width of the grinding groove along the deepest portion of the grinding groove The grinding groove of the grindstone is disposed in such a manner that the direction (the direction in which the rotating shaft extends) is offset, and the grinding groove is obliquely abutted at both interfaces to be polished. More preferably, the polishing groove is brought into contact with the end surface of the laminated body 30, and it is preferable that the polishing groove has a circular arc shape, the interface between the resin layer 14 and the glass piece 12, and the resin layer 14 and the second layer. The interface of the glass piece 34 is abraded by abutting the arcuate portion of the cross section.

According to this chamfering treatment method, the occurrence of defects due to polishing can be reduced, and the chamfering treatment of the end faces of the laminated body 30 can be performed.

The laminate 30 obtained by the present invention, which is manufactured in the desired size and shape, can be used as a substrate for an electronic device such as PV, LCD, or OLED as described above.

In the above, the method for producing the composite of the present invention and the method for producing the laminate are described in detail. However, the present invention is not limited to the above examples, and various modifications and changes can be made without departing from the spirit and scope of the invention. .

[Examples]

Hereinafter, the present invention will be described in more detail with reference to specific embodiments of the invention.

[Example 1]

An alkali-free glass plate (manufactured by Asahi Glass Co., Ltd., AN100) having a thickness of 100 μm and 150 × 100 mm was prepared as the glass piece 12.

First, as a pretreatment, the glass piece 12 was cleaned by washing with pure water and UV cleaning, and then, in order to improve the adhesion, an amine coated with isopropanol as a solvent was applied by spin coating (2000 rpm, 10 seconds). A 0.1 wt% solution of propyltrimethoxydecane (KBM903) was dried at 80 ° C for 10 minutes to carry out a decane coupling treatment of glass flakes 12.

Then, a polyacrylic acid solution for coating was prepared by the following method.

P-phenylenediamine (10.8 g, 0.1 mol) was dissolved in N,N-dimethylacetamide (198.6 g), and stirred at room temperature. Add 3,3',4,4'-biphenyltetracarboxylic dianhydride to 1 minute (BPDA) (29.4 g, 0.1 mol) was stirred at room temperature for 2 hours to obtain a polylysine containing a repeating unit represented by the following formula (2-1) and/or formula (2-2) A polyamic acid solution having a solid content of 20% by mass.

This polyamine acid solution was applied to the glass piece 12 by a spin coating method (2000 rpm, coating amount: 10 g/m ² ) to form a coating film. Thereafter, the film was heated in the air at 60 ° C for 10 minutes, and further heated at 120 ° C for 10 minutes in the air to dry the coating film to form a film of polylysine on the surface of the glass piece 12.

Further, by heating at 350 ° C for 1 hour in the atmosphere, the polyphosphonium amide was imidized, and the initial composite 10a having the resin layer 14 having a thickness of 25 μm of polyimine was produced on the surface of the glass piece 12.

The adhesive force (180 peeling strength) of the resin layer 14 was measured by the universal testing machine (manufactured by Shimadzu Corporation) for the initial composite 10a. As a result, the adhesive force of the resin layer 14 was 12 N/25 mm.

Further, the Young's modulus of the resin layer 14 was measured in accordance with JIS K 7127:1999 (distance from the glass piece) The interface of 12 is in the direction of the normal direction, and the Young's modulus in the region of 0 to 0.5 μm). As a result, the Young's modulus of the resin layer 14 was 5 GPa. Further, the initial composite 10a which was self-made by the Young's modulus was measured by peeling off the resin layer 14. When the resin layer 14 is not peeled off from the initial composite 10a, the glass sheet 12 is dissolved by hydrofluoric acid to obtain a resin layer 14 for measurement.

In the initial composite 10a manufactured as described above, the resin layer 14 is penetrated from the resin layer 14 side by a roller cutter (Pentett, manufactured by Mitsuboshi Diamond Co., Ltd.) to form a linear line 18 on the glass sheet 12.

Then, the initial side body 10a is bent by the resin side, and the glass piece 12 is broken by the scribe line 18 to cut the initial composite body 10a, thereby manufacturing the composite body 10.

The glass piece 12 of the composite 10 thus produced was visually and optically confirmed to have a crack of 5 mm or more in the normal direction (the direction orthogonal to the scribe line) along the scribe line 18. As a result, it was not observed that the rupture (no damage) of 5 mm or more was enlarged from the scribe line 18.

[Embodiment 2]

The composite 10 was produced in the same manner as in Example 1 except that the resin layer 14 was changed to a thickness of 20 μm including PES (polyether tannic acid).

The formation of the PES-containing resin layer 14 is carried out in the following manner. First, PES (manufactured by Sumitomo Chemical Co., Ltd., 5003P) was dissolved in N-methylpyrrolidone at 20% by mass to produce a PES solution. This PES solution was applied to the glass piece 12 by a spin coating method (2000 rpm, coating amount: 10 g/m ² ) to form a coating film. Thereafter, the film was dried by heating in the air at 130 ° C for 1 hour to form a film of PES. Further, in this example, the decane coupling treatment of the glass piece 12 was not performed.

Moreover, when the initial composite 10a was produced, the adhesion force and the Young's modulus of the resin layer 14 were measured in the same manner as in the first embodiment. As a result, the subsequent force was 5.4 N/25 mm, and the Young's modulus was 2.4 GPa.

Further, in the same manner as in the first embodiment, the glass piece 12 of the composite 10 was examined. As a result, no crack (no damage) of 5 mm or more from the scribe line 18 was observed.

[Comparative Example 1]

A composite was produced in the same manner as in Example 1 except that the concentration of the solid content of the polyaminic acid solution was changed to 10% by mass, and the thickness of the resin layer was changed to 0.5 μm.

Further, at the time of producing the initial composite, the adhesion force and the Young's modulus of the resin layer were measured in the same manner as in Example 1. As a result, although the adhesive force was 10 N/25 mm or more, the resin layer was broken, so that the correct value could not be measured. Also, the Young's modulus is 5 GPa.

Moreover, the glass piece 12 of the composite was confirmed in the same manner as in the example 1, and as a result, it was observed that the rug 18 was expanded by 5 mm or more (broken).

[Comparative Example 2]

A composite was produced in the same manner as in Example 1 except that the resin layer was changed to have a thickness of 16 μm.

The formation of the resin layer containing the polyoxyxylene resin is carried out in the following manner. 100 parts by mass of a platinum-based polymerized polyether (for a solvent-free addition type release paper, manufactured by Shin-Etsu Silicones Co., Ltd., KNS-320A, a mixture of an organic alkenyl polysiloxane and an organic hydrogen polyoxyalkylene) A mixture of 2 parts by mass of a catalyst (CAT-PL-56 manufactured by Shin-Etsu Silicones Co., Ltd.) was applied to the glass piece 12 by a spin coating method (2000 rpm, coating amount: 10 g/m ² ) to form a coating film. Thereafter, the film was dried in the air at 180 ° C for 30 minutes to dry the coating film to form a film of a polyoxynoxy resin. Further, in this example, the decane coupling treatment of the glass piece 12 was not performed.

Further, at the time of producing the initial composite, the adhesion force and the Young's modulus of the resin layer were measured in the same manner as in Example 1. As a result, the subsequent force was 2.7 N/25 mm or more, and the Young's modulus was 0.003 GPa.

Moreover, the glass piece 12 of the composite was confirmed in the same manner as in the example 1, and as a result, it was observed that the rug 18 was expanded by 5 mm or more (broken).

[Comparative Example 3]

The same procedure as in Example 1 was carried out except that the decane coupling treatment of the glass piece 12 was not performed. Manufacturing a composite.

Further, at the time of producing the initial composite, the adhesion force and the Young's modulus of the resin layer were measured in the same manner as in Example 1. As a result, the subsequent force was 0.1 N/25 mm, and the Young's modulus was 5 GPa.

Moreover, the glass piece 12 of the composite was confirmed in the same manner as in the example 1, and as a result, it was observed that the rug 18 was expanded by 5 mm or more (broken).

The above results are summarized in the following table.

As shown in the above embodiment, the manufacturing method of the present invention can be suppressed according to the manufacturing method of the present invention in which the thickness of the resin layer 14 is 1 to 100 μm, the bonding force (180° peeling strength) is 1 N/25 mm or more, and the Young's modulus is 100 MPa or more. When the initial composite 10a is cut along the scribe line 18 (the glass sheet 12 is broken), the rupture is enlarged, and the high-quality composite in which the glass sheet 12 does not have a crack of 5 mm or more can be produced.

On the other hand, in Comparative Example 1 in which the resin layer was thin, Comparative Example 2 in which the Young's modulus of the resin layer was low, and Comparative Example 3 in which the adhesion of the resin layer was low, the initial composite was cut along the scribe line 18. At 10a, the rupture is enlarged, and the glass sheet 12 is broken by 5 mm or more.

From the above results, the effects of the present invention are apparent.

The present application is based on Japanese Patent Application No. 2014-099381, filed on Jan.

[Industrial availability]

The present invention can be preferably applied to the manufacture of various electronic devices and the like.

10‧‧‧Compound

10a‧‧‧ initial complex

12‧‧‧Stainless glass

14‧‧‧ resin layer

18‧‧‧dick

20‧‧‧Cutter

Claims (5)

A method for producing a composite body, comprising: a glass piece; and an adhesion force of 180° peeling strength of 1 N/25 mm or more followed by the glass piece, and an interface between the distance and the glass piece is 0 to a normal direction In the initial composite of a resin layer having a Young's modulus of 100 MPa or more and a thickness of 1 to 100 μm in a region of 0.5 μm, the resin layer is passed through to form a scribe line on the glass sheet, and the initial composite is formed using the scribe line as a starting point. The body is cut to thereby produce a composite. The method for producing a composite according to claim 1, wherein the glass piece has a thickness of 100 μm or less. A method for producing a laminate, comprising: forming a first glass sheet and an adhesion force of 180° peel strength of 1 N/25 mm or more, followed by an interface between the first glass sheet and a distance from the first glass sheet; In the initial composite of the resin layer having a Young's modulus of 100 MPa or more and a thickness of 1 to 100 μm in a region of 0 to 0.5 μm in the normal direction, the second glass having a main surface area smaller than the main surface of the resin layer The sheet is laminated on the resin layer so as to surround the outer surface of the main surface of the resin layer in the outer periphery of the main surface of the resin sheet, and then an initial layered body is formed, and the initial layered body is along the second glass. On the outer circumference of the main surface of the sheet, a scribe line is formed in the first glass sheet through the resin layer, and the initial composite body is cut starting from the scribe line to produce a laminate. The method for producing a laminate according to claim 3, wherein after the dicing of the initial composite is performed, chamfering of the end face of the laminate is further performed. The method for producing a laminate according to claim 3 or 4, wherein the thickness of the first glass sheet is 100 μm or less.