KR20160002701A - Device for manufacturing layered body, and method for manufacturing layered body - Google Patents

Abstract

Provided are an apparatus for producing a laminate and a method for producing the laminate, in which air bubbles are hardly left between concave surfaces. A manufacturing apparatus 1000 for a laminate having a display panel 1, a glass plate 2 opposed to the display panel 1, and an adhesive layer 3 sandwiched between the display panel 1 and the glass plate 2 A support member 10 for changing the relative distance between the display panel 1 and the glass plate 2 sandwiching the adhesive layer 3 and disposed opposite to the display panel 1, The first pressure adjusting unit 20 includes a first pressure adjusting unit 20 having a space for accommodating the first pressure adjusting unit 20 and a vacuum pump 30 for controlling the pressure of the space surrounded by the first pressure adjusting unit 20, The first space S1 defined by the first pressure regulating portion 20 and the glass plate 2 is formed by abutting the glass plate 2 against the opening 20a of the pressure adjusting portion 20 to close the opening 20a. , And the vacuum pump (30) is formed so as to be able to reduce the pressure in the first space (S1) to a pressure lower than the atmospheric pressure.

Description

TECHNICAL FIELD [0001] The present invention relates to a device for manufacturing a laminated body and a method for manufacturing a laminated body,

The present invention relates to an apparatus for producing a laminate and a method for producing the laminate.

BACKGROUND ART [0002] Conventionally, a configuration of a laminated body in which opposing surfaces of two members are bonded via an adhesive layer like a display device in which a display surface of a display panel is protected by a transparent face material is known.

In the production of such a laminate, if air is sandwiched between the two members, the adhesive layer after the bonding has air bubbles, which may cause problems such as reduced reliability and poor appearance. For this reason, various studies have been made to suppress the incorporation of bubbles in the production of such a laminate. For example, by setting the vacuum chamber to a reduced pressure atmosphere, contacting the two substrates in a reduced-pressure atmosphere, and then releasing the vacuum chamber to the atmosphere, it is possible to suppress the incorporation of bubbles and further to suppress the air pressure in the region between the substrates, There is known a method in which two substrates are bonded by using differential pressure (for example, refer to Patent Document 1).

Japanese Patent Application Laid-Open No. 2006-47575

In recent years, it has been known that as a display device in which a display surface of a display panel is protected by a transparent face material, a display face of a liquid crystal display, which is relatively smaller than a transparent face material, is bonded to a large transparent face material such as a large window of a head. In the case of the display device having such a structure, it is necessary to arrange the entire large window in the vacuum chamber by applying the manufacturing apparatus having the structure as in the above-mentioned Patent Document 1 so as to prevent bubbles from being mixed in between the large window and the display panel, The device becomes very large. Alternatively, the size of the manufacturable laminate is limited by the size of the vacuum chamber of the production apparatus.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and it is an object of the present invention to provide an apparatus and a method for manufacturing a laminate which are less likely to leave air bubbles between concave surfaces.

In order to solve the above problems, one aspect of the present invention is a laminated body having a first member, a second member facing the first member, and a pressure-sensitive adhesive layer sandwiched between the first member and the second member A manufacturing apparatus comprising: a support member for changing a relative distance between the first member and the second member sandwiching the adhesive layer and disposed opposite to the first member; And a first pressure control means for controlling a pressure of a space surrounded by the first pressure regulating portion, wherein the first pressure regulating portion includes a first pressure regulating portion for regulating the pressure of the second member And the first pressure regulating means forms a first space partitioned by the first pressure regulating portion and a part of the second member by closing the opening of the first pressure regulating portion while abutting against the first pressure regulating portion, It provides an apparatus for manufacturing a laminated body that is formed to be a reduced pressure to a lower pressure.

According to an aspect of the present invention, there is provided an air conditioner, comprising: a hollow second pressure regulator having an open end; and second pressure control means for controlling a pressure of a space surrounded by the second pressure regulator, The second pressure regulating portion and the second member are closed by making the opening of the second pressure regulating portion abut the surface of the second member opposite to the surface contacting the first pressure regulating portion, And the second pressure control means may control the pressure of the second space.

According to one aspect of the present invention, the first pressure adjusting portion is configured to be deformable in accordance with the pressure difference between the first space on the one side relative to the first pressure adjusting portion and the space on the other side with respect to the first pressure adjusting portion You can.

According to an aspect of the present invention, there is provided a pressure regulating device comprising: a third pressure regulating part accommodated in a space for accommodating the first member of the first pressure regulating part, the third pressure regulating part having one end opened and having a space for accommodating the first member; And a third pressure control unit that controls the pressure of the space surrounded by the pressure adjusting unit, and the third pressure adjusting unit closes the opening of the third pressure adjusting unit by bringing the second member into contact with the opening of the third pressure adjusting unit A third space defined by the third pressure regulating part and a part of the second member is formed and deformable in accordance with a differential pressure between the first space and the third space, 3 space may be formed so as to be reduced in pressure to a pressure lower than atmospheric pressure.

According to one aspect of the present invention, the first pressure control means also serves as the third pressure control means, and the first pressure control means is capable of reducing the pressure in the first space and the third space to a pressure lower than the atmospheric pressure As shown in FIG.

One aspect of the present invention is a method of producing a laminate having a first member, a second member facing the first member, and an adhesive layer sandwiched between the first member and the second member, The first member and the second member having the adhesive layer formed thereon are disposed opposite to each other with the adhesive layer interposed therebetween and the first member and the second member are provided in a divided space including a part of the opposite surface of the second member as a boundary, A step of placing the first member and the second member in the first atmosphere and the second member in the first atmosphere, the step of stacking the first member and the second member via the adhesive layer in a first atmosphere, And a step of pressing the first member and the second member by changing the first atmosphere to a second atmosphere having a higher pressure than the first atmosphere.

One aspect of the present invention is a method for producing a laminate having a first member, a second member facing the first member, and an adhesive layer sandwiched between the first member and the second member, A step of forming a layer of the precursor of the pressure-sensitive adhesive layer on one surface of the first member and the second member, and a step of forming the first member and the second member, on which at least one layer of the precursor is formed, Placing the first member in a divided space including a part of the opposite surface of the second member as a boundary and making the space a first atmosphere reduced in pressure than the atmospheric pressure; A step of laminating the first member and the second member via a layer of the precursor in a first atmosphere; and a step of changing the first atmosphere to a second atmosphere having a higher pressure than the first atmosphere, Prize The step, for pressing the first member and the second member by curing the precursor provides a method for preparing a layered product having a step of forming the adhesive layer.

According to an aspect of the present invention, the pressure of the second atmosphere may be higher than the atmospheric pressure.

According to the present invention, it is possible to provide a production apparatus for a laminate and a manufacturing method of the laminate, in which bubbles are hardly left between the concave surfaces.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing an apparatus for producing a laminate according to the first embodiment. Fig.
Fig. 2 is a process chart showing the method of manufacturing the laminate related to the first embodiment. Fig.
Fig. 3 is a process chart showing a method for producing a laminate related to the first embodiment.
4 is an explanatory diagram of a manufacturing apparatus according to the second embodiment.
5 is an explanatory diagram of a manufacturing apparatus according to the third embodiment.
Fig. 6 is a process chart showing a method of manufacturing a laminate related to the third embodiment.
Fig. 7 is a partially enlarged view showing a laminate to be manufactured in the production method of the laminate related to the third embodiment. Fig.
8 is an explanatory view showing a modification of the production apparatus according to the third embodiment.
9 is an explanatory view showing a modification of the production apparatus according to the third embodiment.
10 is a process chart showing a method of manufacturing a laminate related to the fourth embodiment.

In the present specification, the term " opposed surface " refers to a surface of one of the first and second members facing each other.

In the present specification, the term " atmospheric pressure " refers specifically to a pressure atmosphere of 101.325 kPa.

In the present specification, the term " viewed in a plane " refers to observation in a direction parallel to the stacking direction of the first member and the second member.

[First Embodiment]

(Production apparatus of laminate)

1 is a cross-sectional view showing an apparatus for producing a laminate according to the embodiment. In the following drawings, dimensions, ratios, and the like of the respective components are appropriately different in order to make the drawings easy to see.

(Hereinafter simply referred to as a " production apparatus ") 1000 according to the present embodiment is a laminate production apparatus (hereinafter, simply referred to as a " production apparatus ") 1000 having a laminated body having a first member, a second member, and an adhesive layer sandwiched between the first member and the second member . In the present embodiment, the display panel 1 is used as the "first member" and the glass plate 2 having a larger contour as viewed from the plane than the display panel 1 is used as the "second member" And a laminate in which the display panel 1 and the glass plate 2 are laminated via the glass substrate 3 will be described. The adhesive layer 3 may be formed of a resin material or may be an inorganic material such as a metal alkoxide as a main component.

The manufacturing apparatus 1000 includes a support member 10 for supporting the display panel 1, a first pressure adjusting section 20 having a space which is open at one end and accommodates the display panel 1, (Vacuum pump) 30 for controlling the pressure of the space surrounded by the first pressure control means (20).

The supporting member 10 has a supporting portion 10A for supporting the display panel 1 and a moving portion 10B for moving the supporting portion 10A in the thickness direction of the display panel 1 forward and backward. The supporting portion 10A has a base 11, a convex pressing member 12 formed on the peripheral edge portion of the base 11, and an intermediate plate 13 formed on the pressing member 12 have. The moving unit 10B has an expectant receiver 14 connected to the base 11 and a backup 16 interposed between the base 14 and the base 11.

The base 11 is a plate-shaped member, and a pressing member 12 is formed on one surface and a moving portion 10B is connected to the other surface. A convex portion 11a whose outer surface is spherical is formed at the center of the other surface of the base 11.

The pressing member 12 is a convex shaped member formed to press the peripheral edge portion of the display panel 1 at a higher pressure than the inside area when the display panel 1 and the glass plate 2 are joined. The pressing member 12 is formed using a resin material having a lower elastic modulus than that of the display panel 1. [ The pressing member 12 may be formed in a closed ring shape in plan view or may be formed intermittently along the peripheral edge portion of the display panel 1. [

The intermediate plate 13 is a plate-shaped member on which the display panel 1 is placed. The intermediate plate 13 can be made of, for example, a metal material such as stainless steel, an inorganic material such as glass, or a resin material such as an engineer plastic.

The base 11 and the pressing member 12 may be in contact with each other or may be bonded and fixed. The pressing member 12 and the intermediate plate 13 may be in contact with each other or may be bonded and fixed.

When the display panel 1 is likely to be damaged by the contact of the display panel 1 with the intermediate plate 13, for example, when the intermediate plate 13 is made of metal, A resin film or the like may be interposed between the display panels 1 to suppress damage to the display panel 1. [

The base 14 has an axial configuration extending in one direction and is inserted into a through hole 20b formed at the center of the bottom of the first pressure regulating portion 20 described later. The base 14 is configured to be able to move forward and backward by a driving means (not shown).

At one end of the base 14 is formed a convex portion 11a formed on the base 11 and a spherical sheet 14a which is a slidable spherical concave portion. The convex portion 11a is fitted to the spherical seat 14a and the convex portion 11a slides inside the spherical seat 14a so that the inclination of the base 11 is changed. It is preferable that the radius of curvature of the inner surface of the spherical sheet 14a is substantially equal to the distance from the inner surface of the spherical sheet 14a to the surface of the joint of the display panel 1 and the glass plate 2. [

The base 14 has a flange portion 15 in the vicinity of the spherical sheet 14a and a backing 16 made of an elastic material (a resin material, a spring member, or the like) is formed on the flange portion 15 . The backing 16 supports the base 11 from the other surface of the base 11 when the convex portion 11a slides on the spherical seat 14a and the base 11 is inclined, To prevent excessive tilting.

The backup 16 is in contact with either one of the flange portion 15 and the base 11 and is formed to have a contact or a slight gap with the other. The backup 16 may be formed in a closed annular shape in plan view in the flange portion 15 or intermittently along the peripheral edge portion of the flange portion 15. [

The first pressure adjusting portion 20 is a hollow container having an opening 20a at one end and is a member in which the supporting portion 10A and the display panel 1 supported by the supporting portion 10A are accommodated. A through hole 20b is formed at the center of the bottom of the first pressure adjusting portion 20, and the base 14 is inserted. In the inside of the through hole 20b, a packing 21 is formed and kept airtight.

At the end 20c of the first pressure regulating part 20, a sealing member 22 is formed along the end 20c. The sealing member 22 is formed of a resin material such as rubber or elastomer.

A through hole 20d is formed in the first pressure adjusting portion 20 and a vacuum pump 30 is connected to the through hole 20d via a pipe 31. [ A side pipe having a leak valve 32 is connected to the pipe 31 at a position between the through hole 20d and the vacuum pump 30. [

In this manufacturing apparatus 1000, the glass plate 2 is first brought into contact with the opening portion 20a of the first pressure adjusting portion 20 so as to face the surface of the display panel 1, and the first pressure adjusting portion 20 The opening 20a is closed. Thus, the first space S1 formed by the first pressure regulating portion 20 and the glass plate 2 is formed. Thereafter, the first space S1 is decompressed by the vacuum pump 30, thereby reducing the air that causes bubbles. By lamination of the display panel 1 and the glass plate 2 under such a reduced-pressure atmosphere, the laminate can be preferably produced.

(Method for producing laminate)

A method of manufacturing the laminate of this embodiment will be described with reference to Figs. 1 to 3. Fig.

(Step for setting the first atmosphere)

First, as shown in Fig. 1, a support member 10 is used to support a display panel 1 having a pressure-sensitive adhesive layer 3 formed on one surface thereof. The display panel 1 and the glass plate 2 are opposed to each other by bringing the glass plate 2 into contact with the surface of the display panel 1 at the opening 20a of the first pressure adjusting portion 20 , A first space (S1) partitioned by the first pressure regulating part (20) and a part of the glass plate (2). In the first space S1, the display panel 1 is accommodated.

Subsequently, the inside of the first space S1 is decompressed by using a vacuum pump 30 to an air pressure atmosphere lower than the atmospheric pressure (hereinafter, this atmosphere is referred to as "first atmosphere").

(Step of laminating)

2, the support member 10 is moved in the direction of the glass plate 2 so that the display panel 1 and the glass plate 2 are brought close to each other and the display panel 1 1) and the glass plate 2 are laminated.

(Pressing step)

Subsequently, as shown in Fig. 3, the first space S1 is released to the atmosphere by operating the leak valve 32, and the first space S1, which is the first atmosphere, is discharged to the second atmosphere (Hereinafter, a second atmosphere having a higher pressure than the first atmosphere is referred to as a "second atmosphere"), the display panel 1 and the glass plate 2 are disposed under the second atmosphere. Thereby, the display panel 1 and the glass plate 2 are pressed against each other using the pressure difference between the first atmosphere and the second atmosphere, and the display panel 1 is bonded to the glass plate 2. [

When the first space S1 is released to the atmosphere, the display panel 1 and the glass plate 2 are pressed in the direction in which they are brought into close contact with each other by the elevated pressure. Therefore, if there is a gap between the pressure-sensitive adhesive layer 3 and the glass plate 2, the pressure-sensitive adhesive layer 3 which receives the pressure from the periphery is deformed and the gap is filled, so that the void is lost.

In this way, the first member (display panel 1), the second member (glass plate 2) facing the first member, the adhesive layer 3 held between the first member and the second member, Thereby producing a stacked layered body.

According to the apparatus 1000 for producing a laminated body having the above-described structure, it is possible to manufacture a laminate of high quality with less bubbles remaining between the adhesive surface of the adhesive layer 3 and the glass plate 2.

According to the method for producing a laminate having the above-described constitution, it is possible to manufacture a laminate of high quality which is less likely to leave air bubbles between the adhesive surface of the adhesive layer 3 and the glass plate 2.

In the present embodiment, the manufacturing apparatus 1000 is configured to have one supporting member 10, but the present invention is not limited to this. The first pressure adjusting unit 20 may include two or more supporting portions 10A And may be an apparatus capable of bonding two or more first members to the second member.

As the first pressure control means of the manufacturing apparatus 1000 of the present embodiment, the first space S1 may be configured to be pressurizable to a pressure higher than atmospheric pressure. With such a configuration, the display panel 1 and the glass plate 2 can be pressed and bonded by a stronger force, bubbles are hardly left between the adhesive layer 3 and the concave surface of the glass plate 2, A sieve can be produced. In this case, a member for fixing the relative position of the first pressure adjusting portion 20 and the glass plate 2 is fixed so that the first pressure adjusting portion 20 and the glass plate 2 are not separated during the pressing of the first space S1 It may be formed separately.

[Second Embodiment]

4 is an explanatory diagram of a manufacturing apparatus 1100 according to the second embodiment of the present invention. The manufacturing apparatus 1100 of this embodiment is partly common to the manufacturing apparatus 1000 of the first embodiment. Therefore, in the present embodiment, constituent elements common to those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

The manufacturing apparatus 1100 includes a second pressure adjusting section 40 formed opposite to the first pressure adjusting section 20 and a vacuum pump (second pressure controlling means) 50 connected to the second pressure adjusting section 40 I have.

The second pressure regulating portion 40 is a hollow container having an opening portion 40a at one end opposed to the first pressure regulating portion 20. [ A through hole 40b is formed in the wall surface of the second pressure adjusting portion 40 and a vacuum pump 50 is connected via a pipe 51. [ A side pipe having a leak valve 52 is connected to the pipe 51 at a position between the through hole 40b and the vacuum pump 50. [

A sealing member 41 is formed along the end portion 40c at the end portion 40c of the second pressure adjusting portion 40. [ The sealing member 41 is formed using a resin material such as rubber or elastomer.

In this manufacturing apparatus 1100, the glass plate 2 is brought into contact with the opening 20a of the first pressure adjusting section 20 so as to face the surface of the display panel 1, and the opening of the first pressure adjusting section 20 (20a) is closed. Thus, the first space S1 formed by the first pressure regulating portion 20 and the glass plate 2 is formed. Thereafter, the first space (S1) is decompressed by the vacuum pump (30).

If such an operation is performed, depending on the thickness of the glass plate 2, the glass plate 2 may be curved so as to be convex toward the first space S1 due to the differential pressure generated by reducing the pressure in the first space S1 have. When the glass plate 2 is curved in this way, the adhesion on the adhered surface with the display panel 1 (the adhesive layer 3) tends to become uneven.

In the manufacturing apparatus 1100, the second pressure regulating portion 40 is disposed at a position opposite to the first pressure regulating portion 20 in a plan view as a side opposite to the first pressure regulating portion 20 with the glass plate 2 sandwiched therebetween. The glass plate 2 is brought into contact with the opening portion 40a of the second pressure adjusting portion 40 and the opening portion 40a of the second pressure adjusting portion 40 is closed. As a result, the second space S2 is formed by the second pressure regulating portion 40 and the glass plate 2. Thereafter, the second space S2 is decompressed by the vacuum pump 50. Thus, the pressure of the second space S2 is controlled so that the pressure difference between the first space S1 and the second space S2 becomes small, and curvature of the glass plate 2 is suppressed.

According to the apparatus 1100 for producing a laminated body having the above-described structure, it is possible to manufacture a laminate of high quality with less bubbles being left between the adhesive surface of the adhesive layer 3 and the glass plate 2.

In the present embodiment, the vacuum pump 50 controls the pressure in the second space S2 so that the differential pressure between the first space S1 and the second space S2 is small. However, in the second space S2, The pressure control method of step S2 is not limited to this.

For example, when the thickness of the glass plate 2 is thin and the glass plate 2 is bent so as to be convex in the gravity direction by its own weight, bubbles tend to remain between the adhesive layer 3 and the concave surface of the glass plate 2, The problem is likely to occur. In this case, by using the vacuum pump 50, the pressure in the space on the side of the glass plate 2 which is formed on the lower side in the gravity direction with respect to the first space S1 and the second space S2 is increased positively A differential pressure may be formed between the first space S1 and the second space S2. By controlling the pressure in the second space S2 in this way, it is possible to eliminate the warpage of the glass plate 2 by using the differential pressure and suppress the curvature of the glass plate 2. [

Depending on the state of the cohesive surface of the adhesive layer 3 and the glass plate 2, the glass plate 2 may be curved so as to have a predetermined curvature, so that preferable bonding may be possible. In such a case, the vacuum pump 50 is operated so that the pressure difference between the first space S1 and the second space S2 becomes a value that curves the glass plate 2 to a predetermined curvature, (S2).

[Third embodiment]

5 is an explanatory diagram of a manufacturing apparatus 1200 according to the third embodiment of the present invention. The manufacturing apparatus 1200 of the present embodiment is partially common to the manufacturing apparatus 1000 of the first embodiment and the manufacturing apparatus 1100 of the second embodiment. Therefore, in the present embodiment, constituent elements common to those of the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

A third pressure regulating portion 60 is formed on the pressing member 12 in the supporting portion 10C of the supporting member 19 of the manufacturing apparatus 1200. [ The third pressure adjusting portion 60 is a hollow container having an opening portion 60a on the side facing the glass plate 2 and accommodates the display panel 1 therein.

The third pressure regulating portion 60 has a plate-like intermediate plate 61 and a skirt portion 62 formed in an annular shape continuous from the peripheral edge of the intermediate plate 61 in a plan view. The skirt portion 62 is made of a resin material such as rubber or elastomer.

In the manufacturing apparatus 1200, the glass plate 2 is brought into contact with the opening portion 60a of the third pressure adjusting portion 60 so as to face the surface of the display panel 1, and the opening portion 60a is closed. As a result, the third space S3 formed by the third pressure regulating portion 60 and the glass plate 2 is formed. In this state, the pressure in the first space S1 formed by the first pressure adjusting section 20 is made higher than the pressure in the third space S3 formed by the third pressure adjusting section 60, When the differential pressure is generated between the first space S1 and the third space S3, the third pressure adjusting unit 60 is deformed to reduce the volume in accordance with the differential pressure.

The third pressure regulating portion 60 is accommodated in the first pressure regulating portion 20 having a space which is opened at one end and accommodates the third pressure regulating portion 60. [ A vacuum pump (first pressure control means, third pressure control means) 30 is connected to the first pressure regulating section 20 via a pipe 31.

The first pressure regulating portion 20 is formed of a material having a higher rigidity than the third pressure regulating portion 60 and has such a strength as not to be deformed even if a differential pressure is generated inside or outside the first pressure regulating portion 20 .

The first pressure adjusting section 20 causes the glass plate 2 to abut the opening 20a so as to face the surface of the display panel 1 and closes the opening 20a. Thus, the first space S1 formed by the first pressure regulating portion 20 and the glass plate 2 is formed.

The support member 19 is arranged so that the third pressure adjusting portion 60 is moved to the thickness of the display panel 1 by advancing and retracting the moving portion 10B with the first pressure adjusting portion 20 forming the first space S1 Direction. Thereby the first state in which the third pressure adjusting section 60 and the glass plate 2 are separated from each other and the first space S1 is communicated with the third space S3 and the third state in which the third pressure adjusting section 60 and the glass plate 2 are in contact with each other and the first space S1 and the third space S3 are isolated from each other.

In this manufacturing apparatus 1200, the first space S1 is formed by bringing the glass plate 2 into contact with the opening 20a of the first pressure regulating portion 20, and the first space S1 is formed. Thereafter, a vacuum pump 30, which is a pressure control means common to the first space S1 and the third space S3, is used, and the first space S1 and the third space S3 are set to a pressure lower than the atmospheric pressure The pressure is reduced to atmospheric pressure (first atmosphere). That is, the vacuum pump 30 includes a pressure control means (first pressure control means) for controlling the pressure in the first space S1 and a pressure control means for controlling the pressure in the third space S3 Control means).

The glass plate 2 is brought into contact with the opening portion 40a of the second pressure adjusting portion 40 and the opening portion 40a of the second pressure adjusting portion 40 is closed. As a result, the second space S2 is formed by the second pressure regulating portion 40 and the glass plate 2. Thereafter, the second space S2 is decompressed by the vacuum pump 50. This makes it possible to control the differential pressure between the second space S2 and the first space S1 to be small, and curvature of the glass plate 2 can be suppressed.

6, the support member 19 is driven to bring the third pressure adjusting portion 60 into contact with the glass plate 2 so that the first space S1 and the third space S3 are isolated from each other To the second state. At this time, the internal pressure of the first space S1 becomes equal to that of the third space S3.

Subsequently, the first space S1 is released to the atmosphere by operating the leak valve 32, and the first space S1, which is the first atmosphere, is changed to the second atmosphere which is higher in pressure than the first atmosphere, And the adjusting section 60 is set as the second atmosphere. Thereby, the third pressure adjusting portion 60 is pressed by the pressure difference between the third space S3 as the first atmosphere and the first space S1 as the second atmosphere, and is deformed by the pressure difference. The third pressure adjusting portion 60 presses the display panel 1 and the glass plate 2 while being deformed to adhere the display panel 1 to the glass plate 2. [

At this time, as shown in Fig. 7, the third space S3 is isolated from the first space S1 released in the air, so that the end of the adhesive layer 3 does not touch the air during the bonding. Therefore, residual bubbles and absorption of gas at the end of the adhesive layer 3 during bonding can be suppressed, and peeling can be suppressed.

According to the laminate manufacturing apparatus 1200 having the above-described configuration, it is possible to manufacture a laminate of high quality with less bubbles remaining between the adhesive surface of the adhesive layer 3 and the glass plate 2.

Although the manufacturing apparatus 1200 of the present embodiment has the second pressure regulating section 40, it may be configured not to have the second pressure regulating section 40. [

As the first pressure control means of the manufacturing apparatus 1200 of the present embodiment, the first space S1 may be configured to be pressurizable to a pressure higher than the atmospheric pressure in the second state. With such a configuration, the display panel 1 and the glass plate 2 can be pressed and bonded by a stronger force, bubbles are hardly left between the adhesive layer 3 and the concave surface of the glass plate 2, A sieve can be produced. In this case, a member for fixing the relative position of the first pressure adjusting portion 20 and the glass plate 2 is fixed so that the first pressure adjusting portion 20 and the glass plate 2 are not separated during the pressing of the first space S1 It may be formed separately.

In the manufacturing apparatus 1200 of the present embodiment, the third pressure adjusting section 60 includes a plate-shaped intermediate plate 61 and a skirt 61 formed in an annular shape continuous from the periphery of the plate 61, Section 62, but the present invention is not limited thereto. For example, it is not necessary to include a structure having a high rigidity such as the intermediate plate 61, but a sealing structure formed of, for example, a resin material may be used.

(Modified example)

In the manufacturing apparatus 1200 of the present embodiment, the first space S1 and the third space S3 are depressurized by using the vacuum pump 30. However, the first space S1, And the pressure in the third space S3 can be independently controlled.

Figs. 8 and 9 are views showing a modified example of the production apparatus according to the third embodiment, and correspond to Fig. 5. Fig.

(Modified Example 1)

8, a through-hole 61a is formed in the third pressure adjusting portion 60, a through-hole 20e is formed in the first pressure adjusting portion 20, 61a are connected to a vacuum pump (third pressure control means) 63 via a pipe 64 and a through hole 20e. A side pipe having a leak valve 69 is connected to the pipe 64 at a position between the through hole 20e and the vacuum pump 63. [

In the manufacturing apparatus 1300 having such a configuration, the pressure in the third space S3 can be controlled by using the vacuum pump 63. [ The glass plate 2 and the third pressure regulating portion 60 can be separated from each other only by releasing the first space S1 to the atmosphere after the first space S1 and the third space S3 are decompressed together as shown in this embodiment. Air is likely to enter the third space S3 from the interface of the display panel 1 and the third space S3 for a predetermined time (for example, between the display panel 1 and the glass plate 2) It is difficult to keep it in a reduced pressure state. However, in the manufacturing apparatus 1300, since the pressure in the third space S3 can be independently controlled by using the vacuum pump 63, regardless of the pressure atmosphere in the first space S1, It is easy to depressurize the third space S3 and to maintain the reduced pressure state of the third space S3.

(Modified example 2)

9, a through hole 61a is formed in the third pressure adjusting portion 60, a through hole 20e is formed in the first pressure adjusting portion 20, 61a and the through hole 20e are connected to each other through a pipe 64 connected thereto. At the end of the pipe 64, a valve 66 is formed.

On the other hand, in the pipe 31, a valve 68 is formed between the vacuum pump 30 and the through hole 20d.

The pipe 64 and the pipe 31 are connected to each other by a pipe 65. The pipe 65 connects the position between the valve 66 of the pipe 64 and the through hole 20e and the position of the pipe 31 between the vacuum pump 30 and the valve 68. [ A valve 67 is formed in the pipe 65.

In the manufacturing apparatus 1400 having such a structure, the pressure control of the first space S1 and the third space S3 is performed by using the vacuum pump 30, which is the pressure control means common to both. That is, the vacuum pump 30 includes a pressure control means (first pressure control means) for controlling the pressure in the first space S1 and a pressure control means for controlling the pressure in the third space S3 Control means).

The manufacturing apparatus 1400 drives the vacuum pump 30 and appropriately opens and closes the valves 66 67 and 68 so that either one or both of the first space S1 and the third space S3 is decompressed . It is also possible to open or close the leak valve 32 and the valves 66, 67 and 68 properly without driving the vacuum pump 30 to open or close either or both of the first space S1 and the third space S3 The pressure in the first space S1 and the pressure in the third space S3 can be controlled.

Since the pressure in the third space S3 can be independently controlled even in the manufacturing apparatus 1400 having such a configuration, the third space S3 is decompressed regardless of the pressure atmosphere in the first space S1, It is easy to maintain the reduced pressure state of the third space S3.

[Fourth Embodiment]

Further, in the above-described embodiment, the step of manufacturing the laminate is described in which the adhesive layer is already formed on the display panel as the first member. However, by using the present invention, An adhesive layer may be formed.

10 is a process chart showing a step of forming an adhesive layer on the glass plate 2 and is a sectional view taken along a plane parallel to the thickness direction of the glass plate 2. Fig.

(A step of forming a precursor layer)

First, as shown in Fig. 10 (a), the first adhesive material in a liquid phase is applied (or arranged) to the glass plate 2 in the form of a closed loop in plan view. The first adhesive material to be applied or placed may be a curable resin composition, a photo-curable resin composition, or a thermosetting resin composition. The first adhesive material is preferably a photocurable resin composition containing a curable compound and a photopolymerization initiator, because the first adhesive material can be cured at a low temperature and the curing rate is high. In the present embodiment, a photo-curing resin composition is used as the first adhesive material.

The applied first adhesive material has a function of preventing spreading of the second adhesive material to be disposed in the step described later. Since the first adhesive material is not completely cured, the constitution formed by the application of the first adhesive material is referred to as uncured curved portion 4.

Subsequently, as shown in Fig. 10 (b), a liquid second adhesive material is applied (arranged) to a region surrounded by the uncured curved portion 4. [ The second adhesive material to be disposed is a curable resin composition, which may be a photo-curing resin composition or a thermosetting resin composition. As the second adhesive material, a photocurable resin composition containing a curable compound and a photopolymerization initiator is preferable in that it can be cured at a low temperature and has a high curing speed. In the present embodiment, a photo-curable resin composition is used as the second adhesive material.

The coating amount of the second adhesive material is such that the space formed by the uncured curved portion 4, the glass plate 2, and the protective film shown in FIG. 10 (c) described below is filled with the second adhesive material, Further, the distance between the glass plate 2 and the protective film 7 is set to a predetermined distance. At this time, it is preferable to consider the volume reduction of the second adhesive material by the curing shrinkage of the second adhesive material in advance. Therefore, the amount of application is preferably an amount slightly larger than an amount satisfying the volume of the space.

As a method for applying the second adhesive material, there is a method in which the glass plate 2 is placed in a flat arrangement and is applied in a passe, a line, a belt or a plane by a dispenser, a die coater or the like. For example, the dispenser 70 may be coated with the second adhesive material while being horizontally scanned by a known horizontal movement mechanism.

In the following description, the second adhesive material is applied so that the layered structure of the second adhesive material disposed in the region surrounded by the uncured bank-like portion 4 is the same as that before the second adhesive material is cured, (5). The constitution in which the unhardened weft-shaped portion 4 and the uncured layer upper portion 5 are combined corresponds to the "layer of the precursor of the adhesive layer" in the present invention. In the following description, the "layer of the precursor of the adhesive layer" is referred to as the precursor layer 6.

(Step for setting the first atmosphere)

10 (c), for example, in the manufacturing apparatus 1000, the protective film 7 having a contour smaller in plan view than the glass plate 2 is attached (adhered) (8) is supported by the support portion (10A). Further, the glass plate 2 on which the precursor layer 6 is formed is disposed opposite to the protective film 7. The support face material 8 is a jig for holding the protective film 7, for example, a glass plate or the like is used.

In the fourth embodiment, the glass plate 2 corresponds to the first member in Claim 1 of the present invention (hereinafter referred to as the present invention), the protective film 7 corresponds to the second member of the present invention And the precursor layer 6 correspond to the adhesive layer of the present invention.

The glass plate 2 is brought into contact with the opening 20a of the first pressure regulating portion 20 and the opening 20a of the first pressure regulating portion 20 is closed. Thus, the first space S1 formed by the first pressure regulating portion 20 and the glass plate 2 is formed. Thereafter, the vacuum pump 30 reduces the pressure in the first space S1 to a predetermined reduced-pressure atmosphere (first atmosphere), thereby reducing the air that causes bubbles.

(Step of laminating)

After the atmospheric pressure of the first space S1 reaches the first atmosphere, the support member 10 is driven to overlap the glass plate 2 and the protective film 7. The upper portion 5 of the uncured layer (i.e., the second adhesive material) is pushed out by the self weight of the support surface member 8 and the pressure from the support member 10 and the second adhesive material is filled in the sealing space The upper portion 5 of the uncured layer is deformed.

(Pressing step)

Thereafter, a laminate (hereinafter, referred to as uncured laminate) in which the glass plate 2, the precursor layer 6, and the protective film 7 are laminated by, for example, releasing the first space S1 to the atmosphere, Pressure atmosphere (second atmosphere) than the reduced-pressure atmosphere at the time of overlapping.

When the uncured laminate is left in the second atmosphere, the glass plate 2 and the protective film 7 are pressed in a direction in which they are brought into close contact with each other by the pressure difference between the first atmosphere and the second atmosphere. Therefore, if there is a void in which the second adhesive material is not disposed in the sealing space of the uncured laminate, the second adhesive material constituting the uncured layer upper portion 5 flows into the gap, and the entire sealing space Is uniformly filled by the upper portion 5 of the uncured layer.

In the case where the unhardened weft portion 4 or the uncured layer upper portion 5 constituting the precursor layer 6 is in a liquid phase and the arrangement position is displaced when the glass plate 2 is tilted, The operation may be carried out with the precursor layer 6 facing upward. Of course, if the position of the precursor layer 6 is not displaced even when the glass plate 2 is tilted, the attitude during the operation may be irrelevant.

(Step of forming an adhesive layer)

10 (d), the adhesive layer 3 is formed by curing the precursor layer 6 (the unhardened weir portion 4 and the uncured layer upper portion 5) to form the adhesive layer 3, (Hereinafter referred to as a laminate) in which the adhesive layer 2, the adhesive layer 3 and the protective film 7 are laminated. At this time, the uncured curved portion 4 may be cured at the same time as the uncured layer upper portion 5 is cured, or it may be cured before the uncured portion upper portion 5 is cured.

In this embodiment, since the precursor layer 6 (the uncured block portion 4 and the uncured layer upper portion 5) is made of the photo-cured resin composition, the precursor layer 6 is cured by irradiating the light L. For example, ultraviolet light or short-wavelength visible light (light L) is irradiated from a light source (ultraviolet lamp, high-pressure mercury lamp, UV-LED, etc.) to cure the precursor layer 6.

The light L may be irradiated from the glass plate 2 side or from the support face plate 8 side. In the case where an antireflection layer is formed on the glass plate 2 or a layer which does not transmit light is formed between the glass plate 2 and the upper portion 5 of the uncured layer, And the light L is irradiated from the face member 8 side.

Then, the support face material 8 is peeled off from the protective film 7 to finally remove the glass plate 2 (first member), the adhesive layer 3 (the precursor layer 6), the protective film 7 A second member) can be manufactured.

According to the method for producing a laminate having the above-described constitution, it is possible to manufacture a laminate of high quality with less bubbles remaining between the adhesive layer 3 and the protective film 7.

While the preferred embodiments of the present invention have been described with reference to the accompanying drawings, it is needless to say that the present invention is not limited to these examples. The shapes, combinations, and the like of each component member shown in the above-described example are merely examples, and various modifications can be made based on the design requirements and the like within the range not departing from the gist of the present invention.

In the above-described embodiments 1, 2, 3, and 3, the configuration in which the first member (display panel) having the adhesive layer and the second member (glass plate) Or may be formed on the second member side. Further, the present invention can be applied to the case where both the first member and the second member are formed.

In addition, the material, transparency (light transmittance) and size of the first member and the second member are not particularly limited within a range that does not impair the effect of the present invention, and for example, But also for bonding in a manufacturing process of a battery panel, a sensor and the like.

Further, even when the concave surface of the first member and the second member has a curved surface, or when the first member and the second member are members of a film, it is possible to suitably apply the invention by applying the present invention.

Industrial availability

According to the present invention, it is possible to provide a production apparatus for a laminated body and a method for manufacturing a laminated body, in which bubbles are hard to leave between concave surfaces, and more particularly to a production apparatus for a laminated body applied as a protective material to a display surface of a display panel for a display And a method for producing the same.

The entire contents of the specification, claims, drawings and summary of Japanese Patent Application No. 2013-095800 filed on April 30, 2013 are incorporated herein by reference and are to be taken as the disclosure of the present invention.

1: display panel (first member),
2: glass plate (second member),
3: Adhesive layer,
6: precursor layer,
10, 19: support member,
10A, 10C: support portion,
20: a first pressure adjusting section,
20a, 40a, 60a: openings,
30: Vacuum pump (first pressure control means),
40: second pressure adjusting section,
50: a vacuum pump (second pressure control means),
60: third pressure adjusting section,
63: Vacuum pump (third pressure control means)
S1: first space,
S2: the second space,
S3: third space,
1000, 1100, 1200, 1300, 1400 Manufacturing apparatus (apparatus for manufacturing laminate)

Claims (8)

An apparatus for producing a laminate having a first member, a second member facing the first member, and an adhesive layer sandwiched between the first member and the second member,
A supporting member which changes the relative distance between the first member and the second member which sandwiches the adhesive layer and is disposed opposite to the first member;
A first pressure adjusting portion having an opening at one end and having a space for accommodating the first member;
And a first pressure control means for controlling a pressure of a space surrounded by the first pressure adjusting portion,
Wherein the first pressure adjusting unit is configured to close the opening of the first pressure adjusting unit by causing the second member to abut on the opening of the first pressure adjusting unit to close the opening of the first pressure adjusting unit, Forming a space,
Wherein the first pressure control means is formed to be capable of reducing the pressure of the first space to a pressure lower than the atmospheric pressure. The method according to claim 1,
A hollow second pressure regulating portion having an open end,
And second pressure control means for controlling the pressure of the space surrounded by the second pressure adjusting portion,
The second pressure adjusting portion closes the opening of the second pressure adjusting portion by bringing the opening of the second pressure adjusting portion into contact with a surface of the second member opposite to the surface contacting the first pressure adjusting portion, Forming a second space defined by the second pressure adjusting portion and a portion of the second member,
And the second pressure control means controls the pressure of the second space. 3. The method according to claim 1 or 2,
Wherein the first pressure adjusting portion is deformable in accordance with a pressure difference between the first space at one side relative to the first pressure adjusting portion and the space at the other side with respect to the first pressure adjusting portion. 4. The method according to any one of claims 1 to 3,
A third pressure regulating member accommodated in a space for receiving the first member of the first pressure regulating member and having one end opened and having a space for accommodating the first member;
And third pressure control means for controlling the pressure of the space surrounded by the third pressure adjusting portion,
The third pressure regulating portion is configured to abut the second member against the opening of the third pressure regulating portion so as to close the opening portion of the third pressure regulating portion so that the third pressure regulating portion, Wherein the first space is deformable in accordance with a pressure difference between the first space and the third space,
Wherein the third pressure control means is configured to be capable of reducing the pressure in the third space to a pressure lower than atmospheric pressure. 5. The method of claim 4,
The first pressure control means also serves as the third pressure control means,
Wherein the first pressure control means is configured to be capable of reducing the pressure of the first space and the third space to a pressure lower than the atmospheric pressure. A method for producing a laminate having a first member, a second member facing the first member, and an adhesive layer sandwiched between the first member and the second member,
The first member and the second member having the adhesive layer formed on at least one side thereof are disposed opposite to each other with the adhesive layer sandwiched therebetween and a partitioned space including a part of the opposite surface of the second member as a boundary A step of accommodating the first member and making the space a first atmosphere that is reduced in pressure from atmospheric pressure;
A step of laminating the first member and the second member via the adhesive layer under a first atmosphere;
And pressing the first member and the second member by changing the first atmosphere to a second atmosphere having a higher pressure than the first atmosphere. A method for producing a laminate having a first member, a second member facing the first member, and an adhesive layer sandwiched between the first member and the second member,
A step of forming a layer of the precursor of the pressure-sensitive adhesive layer on the opposed surface of either one of the first member and the second member,
The first member and the second member having the layer of the precursor formed on at least one side thereof with the layer of the precursor interposed therebetween and a partitioned part including the part of the opposite surface of the second member as a boundary A step of accommodating the first member in a space and making the space a first atmosphere that is reduced in pressure from atmospheric pressure;
A step of laminating the first member and the second member via a layer of the precursor in a first atmosphere;
Pressing the first member and the second member by changing the first atmosphere to a second atmosphere having a higher pressure than the first atmosphere,
And a step of curing the precursor to form the pressure-sensitive adhesive layer. 8. The method according to claim 6 or 7,
And the pressure of the second atmosphere is higher than the atmospheric pressure.

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