JP2016056047A - Manufacturing method of laminate article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a laminate article capable of saving a work time.SOLUTION: A manufacturing method of a laminate article (cover glass 10) includes a laminate forming step for forming a laminate layer C composed of a first and second glass plates 21, 22 each having a scribe line S on the surfaces 21a, 22a, and an adhesion layer 23 sandwiched between the surface 21a of the first glass plate 21 on which the scribe line S is formed and the reverse face 22b of the second glass plate 22, wherein the laminate layer is constituted so that the positions of scribe lines S of the first and second glass plates 21, 22 overlap with each other in the laminate direction; and a snapping step for snapping the laminate layer C along each scribe line S of the first and second glass plates 21,22 by pressing the laminate layer C from the reverse face 21b side of the first glass plate 21.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method for manufacturing a laminated article.

  Conventionally, as shown in Patent Document 1, for example, a cover glass disposed on the front surface of a solid-state imaging device such as a digital still camera is provided with an infrared cut filter using light interference on the surface, and cuts infrared rays. It functions as a translucent window that takes visible light into the package. However, since the conventional cover glass has a thin infrared cut filter, there is a problem in that the absorption characteristic changes with respect to obliquely incident infrared rays.

  Therefore, as a means for solving the problem, it has been studied to use an infrared absorbing glass containing copper or the like and having an improved infrared absorbing ability as a cover glass. There is a problem that it is easily cloudy. Therefore, it is necessary to make the structure which laminated | stacked normal glass (glass excellent in a weather resistance rather than infrared absorption glass) on the at least surface side (external side of the package of a fixed image pick-up element) of infrared absorption glass.

JP 2014-148454 A

  By the way, as a manufacturing method of a laminated article in which a plurality of glasses as described above (in the above example, an infrared absorbing glass and a protective glass) are laminated, a plurality of large glasses are laminated and fixed via an adhesive, and then laminated. There is a method of obtaining a laminated article by cutting a body into a product size with a dicer or the like. However, cutting a laminated body made of a plurality of glasses with a dicer or the like is time-consuming work especially when the thickness of the laminated body is large, and there is still room for improvement in this respect.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for manufacturing a laminated article capable of suppressing an increase in working time.

  A method for manufacturing a laminated article that solves the above problems includes first and second glass plates each having a scribe line formed on a surface thereof, a surface of the first glass plate on which the scribe line is formed, and the second glass plate. An adhesive layer interposed between the back surfaces of the first and second glass plates, and a laminated body forming step for forming a laminated body configured such that the formation positions of the scribe lines of the first and second glass plates overlap in the lamination direction; A pressing step of pressing the laminated body from the back side of the first glass plate to fold the laminated body along the scribe lines of the first and second glass plates.

  According to this manufacturing method, the laminate is folded into product sizes along the scribe lines of the first and second glass plates to obtain a laminated article, so that cutting (dicing) using a dicer or the like is not required for the laminate. It becomes. Accordingly, it is possible to suppress an increase in work time, and it is possible to suppress chipping that is likely to occur in dicing.

  In the method for manufacturing a laminated article, the laminated body forming step includes a scribe line forming step for forming the scribe lines on the surfaces of the first and second glass plates, and a first step after the scribe line forming step. And a laminating step of laminating the second glass plate via the adhesive layer.

  According to this manufacturing method, the scribe lines of the first glass plate are formed in advance on the surfaces of the first and second glass plates, and then the first and second glass plates and the adhesive layer are laminated. An adhesive layer can be interposed between the formed surface and the back surface of the second glass plate.

  In the method for manufacturing a laminated article, the laminated body forming step includes a first scribe line forming step of forming the scribe line on a surface of the first glass plate, and a first scribe line forming step, and the first scribe line forming step. And a second step of forming a scribe line on the surface of the second glass plate after the step of stacking, and a step of forming the second glass plate through the adhesive layer. .

  According to this manufacturing method, after the scribe line is formed in advance on the surface of the first glass plate, the first and second glass plates and the adhesive layer are laminated, and then the scribe line is formed on the surface of the second glass plate. Therefore, the scribe line can be formed on the surface of the second glass plate in accordance with the scribe line formed on the surface of the first glass plate.

  According to the method for manufacturing a laminated article of the present invention, an increase in working time can be suppressed.

(A)-(f) is a schematic diagram for demonstrating the manufacturing method of the laminated | stacked article in embodiment. (A)-(g) is a schematic diagram for demonstrating the manufacturing method of the laminated article in another example.

Hereinafter, an embodiment of a method for manufacturing a laminated article will be described.
As shown in FIG. 1 (f), the laminated article molded by the manufacturing method of the present embodiment is a front surface of a package that includes a light receiving element (CCD, CMOS, etc.) inside a solid-state imaging device such as a digital still camera. It is the cover glass 10 arrange | positioned. The cover glass 10 has a laminated structure in which an infrared absorbing glass 11 and a protective glass 12 each having a flat plate shape are bonded by an adhesive layer 13. The cover glass 10 protects dust and the like from entering the package, and functions as a light-transmitting window that captures visible light into the package while cutting infrared light with the infrared absorption glass 11. The cover glass 10 is assembled to the package so that the protective glass 12 faces the outside of the package, and the protective glass 12 is a surface of the infrared absorbing glass 11 (surface on the outside of the package) inferior in weather resistance (moisture resistance). ) Is protected from dampness due to moisture. For this reason, it is preferable to use a glass having better weather resistance than the infrared absorbing glass 11 as the protective glass 12.

Next, the manufacturing method of the cover glass 10 is demonstrated.
First, as shown to Fig.1 (a), the 1st glass plate 21 which consists of infrared absorption glass containing copper, for example, and the 2nd glass plate 22 excellent in weather resistance rather than the 1st glass plate 21 are prepared. To do. Then, linear scribe lines S (cracks) are formed at predetermined depths on the surface 21a of the first glass plate 21 and the surface 22a of the second glass plate 22 in advance by a known thermal processing laser cutting device or the like. (Scribe line forming step).

  Next, as illustrated in FIG. 1B, a bonding process is performed in which the first and second glass plates 21 and 22 are bonded through the adhesive layer 23. In this step, an ultraviolet curable resin is applied to the entire surface 21 a of the first glass plate 21 by, for example, a spin coater to form the adhesive layer 23, and the surface 21 a of the first glass plate 21 and the back surface 22 b of the second glass plate 22 are formed. The glass plates 21 and 22 are bonded together so that the adhesive layer 23 is sandwiched between (the plate surface on which the scribe line S is not formed). Thereby, the laminated body C which consists of the 1st glass plate 21, the contact bonding layer 23, and the 2nd glass plate 22 is shape | molded. At this time, the first and second glass plates 21 and 22 are laminated so that the surfaces 21a and 22a on which the scribe lines S are formed face the same side (upper side in FIG. 1), and the formation of the scribe lines S is formed. Lamination is performed so that the positions overlap in the stacking direction.

  Next, as shown in FIG.1 (c), the laminated body C is extended with the smooth plate 31 between a pair of rollers 32a and 32b, and the adhesive layer 23 between the 1st and 2nd glass plates 21 and 22 is extended. Then, an adhesive layer homogenizing step for making the thickness uniform is performed. At this time, the laminate C and the smooth plate 31 are passed between the pair of rollers 32 a and 32 b in a state where the smooth plate 31 is in contact with the back surface 21 b of the first glass plate 21. That is, the roller 32a contacts the surface 22a of the second glass plate 22 and applies pressure to the surface 22a, while the other roller 32b contacts the smooth plate 31 and applies pressure to the smooth plate 31. Thereby, since the pressure from the other roller 32b is disperse | distributed to the whole back surface 21b of the 1st glass plate 21 with the smooth plate 31, it can suppress that the 1st glass plate 21 breaks along the scribe line S in this process. .

  Next, as shown in FIG. 1D, an adhesive layer curing step is performed in which the laminate C is irradiated with ultraviolet rays emitted from the ultraviolet lamp 33 to cure the adhesive layer 23. By this step, the first and second glass plates 21 and 22 are integrally fixed. In addition, in FIG.1 (d), although the laminated body C is irradiated with the ultraviolet-ray from the surface 22a side of the 2nd glass plate 22, you may irradiate from the back surface 21b side of the 1st glass plate 21. FIG.

In the present embodiment, the scribe line forming step, the bonding step, the adhesive layer uniformizing step, and the adhesive layer curing step constitute a laminate forming step for forming the laminate C.
Next, as shown in FIG. 1 (e), a splitting process is performed in which the stacked body C is split along the scribe line S. In this step, while the surface 22a of the second glass plate 22 is pressed at two points across the scribe line S with a pressing jig 34 (anvil), the position directly behind the scribe line S on the back surface 21b of the first glass plate 21 is determined. By pressing with the pusher 35, the laminated body C is cleaved along the scribe lines S of the first and second glass plates 21 and 22. Thereby, the cover glass 10 (refer FIG.1 (f)) cleaved by the product size is obtained.

Next, the operation of this embodiment will be described.
After laminating and fixing the first and second glass plates 21 and 22 on which the scribe line S is previously formed, the laminated body C is folded along the scribe line S into a product size to obtain the cover glass 10. Thereby, since cutting (dicing) using a dicer or the like is not required for the laminated body C, an increase in working time (tact time) is suppressed regardless of the thickness of the laminated body C (thickness of each glass plate 21, 22). be able to. Moreover, the occurrence of chipping can be suppressed as compared with the case of cutting using a dicer or the like.

  Although not shown in FIG. 1 for convenience of explanation, a plurality of scribe lines S are formed on the surfaces 21 a and 22 a of the glass plates 21 and 22, and the scribe lines S are folded along the scribe lines S. Of the obtained plurality of split pieces, the split pieces including the end portions of the laminate C (so-called ear portions) are discarded from the viewpoint of quality assurance, and the split pieces other than the ear portions are obtained as a product (cover glass 10).

  Here, as a method different from the present embodiment, the glass plates 21 and 22 are cut into product sizes in advance, and then the glass pieces (infrared absorbing glass 11 and protective glass 12) cut into the product sizes are adhesives. The method of laminating | stacking via is considered. However, in the case of this method, it is difficult to position the infrared absorbing glass 11 and the protective glass 12 at the time of stacking, and a shift between them is likely to occur. Moreover, the process of removing the adhesive overflowing from between the infrared absorption glass 11 and the protective glass 12 is required.

  In that respect, in the manufacturing method of the present embodiment, after the glass plates 21 and 22 are laminated and fixed, the laminated body C is folded along the scribe line S, and products other than the ears at the ends of the laminated body C are manufactured. Therefore, even if the adhesive (adhesive layer 23) overflows between the ends of the glass plates 21 and 22 in the adhesive homogenizing step, the end of the laminated body C to which the overflowed adhesive adheres Since the ear part of the part is discarded, the step of removing the overflowing adhesive from the cover glass 10 can be made unnecessary.

Next, characteristic effects of the present embodiment will be described.
(1) The manufacturing method of the laminated article (cover glass 10) of the present embodiment includes the first and second glass plates 21 and 22 having the scribe lines S formed on the surfaces 21a and 22a, respectively, and the first glass plate 21 It consists of the adhesive layer 23 interposed between the front surface 21a on which the scribe line S is formed and the back surface 22b of the second glass plate 22, and the formation position of each scribe line S on the first and second glass plates 21 and 22 is A laminated body forming step for forming the laminated body C configured to overlap in the laminating direction, and pressing the laminated body C from the back surface 21b side of the first glass plate 21 makes the laminated body C a first and a second. A folding step of breaking along the scribe lines S of the glass plates 21 and 22.

  According to this manufacturing method, the laminate C is broken into product sizes along the scribe lines S of the first and second glass plates 21 and 22 to obtain the cover glass 10, so that a dicer or the like for the laminate C is used. The necessary cutting (dicing) can be eliminated. Accordingly, it is possible to suppress an increase in work time, and it is possible to suppress chipping that is likely to occur in dicing.

  (2) The laminated body forming step includes a scribe line forming step for forming scribe lines S on the surfaces 21a and 22a of the first and second glass plates 21 and 22, respectively, and a scribe line forming step, and a first and second scribe line forming step. A laminating process (a bonding process, an adhesive layer equalizing process, and an adhesive layer curing process) in which the glass plates 21 and 22 are laminated via the adhesive layer 23.

  According to this manufacturing method, the scribe lines S are formed in advance on the surfaces 21 a and 22 a of the first and second glass plates 21 and 22, and then the first and second glass plates 21 and 22 and the adhesive layer 23 are laminated. Therefore, the adhesive layer 23 can be interposed between the front surface 21 a on which the scribe line S of the first glass plate 21 is formed and the back surface 22 b of the second glass plate 22.

In addition, you may change the said embodiment as follows.
-In the laminated body formation process of the said embodiment, after forming the scribe line S in the surfaces 21a and 22a of the 1st and 2nd glass plates 21 and 22, respectively, the 1st and 2nd glass plates 21 and 22 are adhere | attached on the adhesive layer 23. However, the present invention is not particularly limited to this. For example, as shown in FIGS. 2A to 2G, a laminated body forming step is performed on the surface 21 a of the first glass plate 21. After the first scribe line forming step (see FIG. 2A) for forming the scribe line S and the first scribe line forming step, the first and second glass plates 21 and 22 are laminated via the adhesive layer 23. A laminating step (see FIGS. 2B to 2D), and a second scribe line forming step (FIG. 2E) for forming scribe lines S on the surface 22a of the second glass plate 22 after the laminating step; May be included. Note that the lamination process (see FIGS. 2B to 2D) and the folding process (see FIG. 2E) in the example shown in FIG. 2 are the same as the lamination process (bonding process, bonding layer uniform) of the above embodiment. The process is substantially the same as the process and the folding process.

  According to this manufacturing method, after the scribe line S is formed in advance on the surface 21a of the first glass plate 21, the first and second glass plates 21, 22 and the adhesive layer 23 are laminated, and then the second glass plate. Since the scribe line S is formed on the surface 22a of the 22, the scribe line S can be formed on the surface 22a of the second glass plate 22 in accordance with the scribe line S formed on the surface 21a of the first glass plate 21.

  -In the bonding process of the said embodiment, after apply | coating the adhesive agent (adhesion layer 23) to the surface 21a of the 1st glass plate 21, each glass plate 21 and 22 was bonded together, but the back surface of the 2nd glass plate 22 After the adhesive is applied to 22b, the glass plates 21 and 22 may be bonded together.

  In the adhesive layer homogenizing step of the above embodiment, the thickness of the adhesive layer 23 is made uniform by passing the laminated body C between the pair of rollers 32a and 32b. Any means other than the rollers 32 a and 32 b may be used as long as the thickness of the adhesive layer 23 can be made uniform by applying pressure to C in the stacking direction.

  -In the said embodiment, although the ultraviolet curable resin was used as a material which comprises the contact bonding layer 23, it is not specifically limited to this, For example, the 1st glass plate 21 and 2nd tapes, such as a thermosetting resin and a double-sided tape, are used. The two glass plates 22 may be appropriately changed as long as they can be bonded.

  In the above-described embodiment, the first glass plate 21 is, for example, infrared-absorbing glass containing copper (infrared-absorbing glass 11 as a product), and the second glass plate 22 has weather resistance superior to that of the first glass plate 21. In contrast, the second glass plate 22 may be the infrared absorbing glass 11 and the first glass plate 21 may be weather resistant glass.

  -In the said embodiment, although applied to the manufacturing method of the laminated article which consists of 2 sheets of glass (infrared absorption glass 11 and protective glass 12), the laminated article which consists of 3 or more sheets of glass (for example, both surfaces of the infrared absorption glass 11) May be applied to a manufacturing method of a cover glass having a protective glass 12 laminated thereon.

  -In the said embodiment, although applied to the manufacturing method of the cover glass 10 of a fixed image pick-up element, it is not specifically limited to this, For example, a liquid crystal display panel etc. of laminated articles formed by laminating a plurality of glass plates Applicable to manufacturing method.

Next, a technical idea that can be grasped from the above embodiment and another example will be added below.
(A) In the manufacturing method of the laminated article according to any one of claims 1 to 3,
An adhesive layer homogenizing step for uniformly extending the thickness of the adhesive layer by passing the smooth plate and the laminate between a pair of rollers in a state where the smooth plate is in contact with the back surface of the first glass plate; A method for producing a laminated article, comprising:

  Thereby, since the pressure of a roller is disperse | distributed via a smooth plate and acts on the back surface of a 1st glass plate, when a laminated body is passed between rollers, a 1st glass plate will break along a scribe line. Can be suppressed.

(B) In the method for manufacturing a laminated article according to any one of claims 1 to 3,
The laminated body forming step includes an adhesive layer curing step of curing the adhesive layer interposed between the first and second glass plates.

  Thereby, it becomes possible to fold a laminated body easily in the folding process after a laminated body formation process.

  DESCRIPTION OF SYMBOLS 10 ... Cover glass (laminated article), 21 ... 1st glass plate, 22 ... 2nd glass plate, 23 ... Adhesive layer, 34 ... Holding jig, 35 ... Pusher, C ... Laminated body, S ... Scribe line.

Claims (3)

From the 1st and 2nd glass plate in which the scribe line was formed in the surface, respectively, and the adhesion layer interposed between the surface in which the scribe line of the 1st glass plate was formed, and the back of the 2nd glass plate A laminated body forming step for forming a laminated body configured such that the formation positions of the scribe lines of the first and second glass plates overlap in the lamination direction;
A pressing step of pressing the laminated body from the back side of the first glass plate to fold the laminated body along the scribe lines of the first and second glass plates; A method for producing a laminated article. The laminate molding step includes
A scribe line forming step of forming the scribe lines on the surfaces of the first and second glass plates,
The method for producing a laminated article according to claim 1, further comprising a laminating step of laminating the first and second glass plates through the adhesive layer after the scribe line forming step. The laminate molding step includes
A first scribe line forming step of forming the scribe line on the surface of the first glass plate;
A laminating step of laminating the first and second glass plates via the adhesive layer after the first scribe line forming step;
The method for producing a laminated article according to claim 1, further comprising a second scribe line forming step of forming the scribe line on the surface of the second glass plate after the laminating step.