JP6375564B2 - Manufacturing method of laminate - Google Patents

Description

  The present invention relates to a method for manufacturing a laminate.

  For the purpose of protecting the display surface of a plate like an image display panel such as a liquid crystal display panel or an organic EL display panel, another plate like a cover glass is bonded through an adhesive layer. It has been known. When bonding two plate-shaped bodies (a first plate-shaped body and a second plate-shaped body), it is desired that no bubbles remain between the plate-shaped bodies.

  For example, in Patent Document 1, a first plate and a second plate are installed in a processing tank in a state where they are supported by an elastic support, and the inside of the processing tank is evacuated and the first plate and A panel bonding apparatus is disclosed in which bubbles are not left by bonding a second plate-like body.

Utility Model Registration No. 3171995

  However, the panel joining apparatus of Patent Document 1 requires equipment such as a processing tank and a vacuum pump for evacuating the processing tank. Moreover, in order to bond the 1st plate-shaped body and the 2nd plate-shaped body, time for making the inside of a processing tank into a vacuum is required.

  In recent years, the display of the image display panel is used for signboard advertisements through the window glass by pasting the second plate such as the image display panel for digital signage to the first plate such as the window glass. To be considered.

  In such a usage pattern, since the window glass is attached to the wall surface of the building, it is difficult to bond the window glass and the image display panel under vacuum as shown in Patent Document 1. On the other hand, since air bubbles entrained at the interface of the adhesive layer between the window glass and the image display panel adversely affect the image quality, it is necessary to pay close attention not to entrain air bubbles in bonding.

  In particular, at the installation site, in order to suppress the entrainment of bubbles, it is required to maintain the distance between the first plate and the second plate to prevent unexpected contact. Moreover, when bonding with a 1st plate-shaped object and a 2nd plate-shaped object, it is between the start of bonding and it complete | finishes bonding between a 1st plate-shaped object and a 2nd plate-shaped object. It is also required to continuously reduce the distance between the first plate-like body and the second plate-like body from suddenly changing.

  The present invention has been made in view of such circumstances, and a method for producing a laminated body and a laminated body in which bubbles are unlikely to enter the interface of the adhesive layer between the first plate-like body and the second plate-like body. The purpose is to provide a body.

  The manufacturing method of the laminated body which concerns on this invention is a manufacturing method of the laminated body which bonds a 1st plate-shaped body and a 2nd plate-shaped body through an adhesion layer in air | atmosphere, Comprising: By the elastic body or the viscoelastic body arranged between the non-bonding region of the first plate-shaped body and the non-bonding region of the second plate-shaped body, the first plate-shaped body and the second plate By separating the elastic body relative to the bonding direction by the pressing member, the separation step of disposing the plate-like body at a distance, and the first plate-like body or the second plate-like body. The first plate and the second plate are brought into contact with each other via the adhesive layer to start bonding, and by moving the pressing member, the bonding position is moved, The distance between the first plate-like body and the second plate-like body by deforming the elastic body or the viscoelastic body existing in the moving direction of the pressing member While continuously reduced, and a bonding step of the bonding region of the first plate-like body bonding region and the second plate-like member is stuck through the adhesive layer.

  Preferably, in the bonding step, bonding is started at one edge of the second plate-like body, and the pressing member is moved toward the other edge facing the one edge.

  Preferably, in the bonding step, bonding is started at a portion other than the edge of the second plate-like body, the pressing member is moved toward one edge, and then from the one edge, The pressing member is moved toward the other edge facing the one edge.

  Preferably, the area of the first plate-like body is larger than the area of the second plate-like body.

  Preferably, the adhesive layer is provided on the second plate-like body.

  Preferably, the first plate-like body is a glass plate, and the second plate-like body is an image display panel.

  Preferably, the glass plate is a window glass.

  Preferably, after the said bonding process, the removal process which removes the said elastic body or the said viscoelastic body is provided.

  Preferably, in the bonding step, the elastic body or the viscoelastic body is composed of a plurality of divided elastic bodies or divided viscoelastic bodies, and exists in a region where the bonding is finished while moving the pressing member. The divided elastic body or the divided viscoelastic body is sequentially removed.

  Preferably, the pressing member is a rolling member.

  According to the present invention, it is possible to obtain a laminated body in which bubbles do not easily enter the interface of the adhesive layer between the first plate-like body and the second plate-like body.

It is a longitudinal cross-sectional view of digital signage. It is an expanded sectional view of the A section of FIG. It is a top view of a transparent surface material with an adhesion layer. FIG. 4 is a sectional view taken along line B-B ′ in FIG. 3. It is explanatory drawing which shows the manufacturing method of the laminated body of 1st Embodiment. It is explanatory drawing which shows the manufacturing method of the laminated body of 1st Embodiment. It is explanatory drawing which shows the manufacturing method of the laminated body of 2nd Embodiment. It is explanatory drawing which shows the manufacturing method of the laminated body of 3rd Embodiment. It is explanatory drawing which shows the manufacturing method of the laminated body of 3rd Embodiment. It is explanatory drawing which shows the manufacturing method of the laminated body of 3rd Embodiment. It is explanatory drawing which shows the manufacturing method of the laminated body of 3rd Embodiment.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The present invention is illustrated by the following preferred embodiments. Changes can be made by many techniques without departing from the scope of the present invention, and other embodiments than the present embodiment can be utilized. Accordingly, all modifications within the scope of the present invention are included in the claims.

  Here, in the drawing, portions indicated by the same symbols are similar elements having similar functions. In addition, in the present specification, when a numerical range is expressed using “˜”, upper and lower numerical values indicated by “˜” are also included in the numerical range.

  Hereinafter, preferred embodiments of a laminate manufacturing method and a laminate according to the present invention will be described with reference to the accompanying drawings.

  First, a digital signage (image display device), which is an example of a laminate manufactured by the laminate manufacturing method of the embodiment, will be described.

  FIG. 1 is a longitudinal sectional view of the digital signage 100, and FIG. 2 is an enlarged sectional view of a portion A in FIG.

  The digital signage 100 includes an existing window glass (first plate-like body) 102 and a liquid crystal display panel (second plate-like body: image display panel) 106 constituting the liquid crystal display unit 104, and a transparent surface with an adhesive layer. It is configured by bonding through the material 108. Hereinafter, each member will be described.

<Transparent surface material with adhesive layer 108>
FIG. 3 is a plan view of the transparent surface material 108 with an adhesive layer. 4 is a cross-sectional view taken along line BB ′ of FIG.

  As shown in FIG. 4, the transparent surface material 108 with an adhesive layer includes a transparent surface material 110, a light shielding portion 112, a first adhesive layer 114, a second adhesive layer 116, a first protective film 118, and a second protective film 118. A protective film 120 is provided. The light shielding portion 112 is provided at the peripheral edge portion of the second surface 110 b of the transparent surface material 110. The first adhesive layer 114 is provided on the first surface 110 a of the transparent surface material 110. The second adhesive layer 116 has a smaller formation area than the first adhesive layer 114, and is provided on the second surface 110 b of the transparent surface material 110.

(Transparent surface material 110)
The transparent surface material 110 becomes a core material of the transparent surface material 108 with the adhesive layer, and is interposed between the liquid crystal display panel 106 and the window glass 102 when the liquid crystal display panel 106 described later is bonded to the window glass 102. It is a plate-like body. Examples of the transparent face material 110 include a glass plate and a resin plate. From the viewpoint of having high light resistance, low birefringence, high planar accuracy, surface scratch resistance, and high mechanical strength as well as high transparency with respect to light emitted from and reflected light from the liquid crystal display panel 106 Most preferably, a glass plate is used as the material 110. From the viewpoint of having a high transmittance with respect to light for curing the photocurable resin composition constituting the first adhesive layer 114 and the second adhesive layer 116 as the transparent face material 110, the use of a glass plate is preferable.

  Examples of the glass plate include glass materials such as soda lime glass, physically tempered glass, and chemically tempered glass. Examples of the resin plate include highly transparent resin materials such as polycarbonate and polymethyl methacrylate.

  The shape of the transparent surface material 110 may be determined according to the planar shape of the liquid crystal display panel 106 to be bonded, and is rectangular as an example as shown in FIG. In terms of mechanical strength, transparency, etc., the thickness of the transparent face material 110 is preferably about 0.2 to 2.0 mm if it is a glass plate. In order not to make the observer feel the depth feeling of the display image strongly, the thickness of the transparent face member 110 is more preferably about 0.2 to 0.7 mm. If it is a resin plate, the thickness of the transparent face 110 is preferably about 0.1 to 1.0 mm.

(Shading part 112)
The light shielding portion 112 is a flexible printed wiring board or the like connected to the liquid crystal display panel 106 so that the area other than the image display area of the liquid crystal display panel 106 cannot be seen when the liquid crystal display panel 106 is bonded to the window glass 102. The wiring member is hidden. When the transparent face material 110 is a glass plate, it is preferable that the light shielding part 112 is formed by using a printing method such as ceramic printing including a black pigment because of high light shielding properties. The light shielding portion 112 can be formed using various thin film forming methods.

(First adhesive layer 114)
The 1st adhesion layer 114 is comprised from the transparent resin which hardened the liquid photocurable resin composition. About 0.1-2.0 mm is preferable and, as for the thickness of the 1st adhesion layer 114, about 0.2-0.8 mm is more preferable. The photocurable resin composition that is a raw material of the first adhesive layer 114 is a liquid composition containing a photocurable curable compound, a photopolymerization initiator, and, if necessary, a non-curable oligomer. . The non-curable oligomer is an oligomer having a hydroxyl group that does not cause a curing reaction with the curable compound in the composition when the photocurable resin composition is cured.

(Second adhesive layer 116)
The second adhesive layer 116 is for bonding the transparent surface material 108 with an adhesive layer to the liquid crystal display panel 106. The second adhesive layer 116 has a smaller formation area than the first adhesive layer 114. Specifically, the first adhesive layer 114 is provided over the entire first surface 110 a of the transparent surface material 110, whereas the second adhesive layer 116 is the second surface 110 b of the transparent surface material 110. Are provided in some areas. That is, the second surface 110b of the transparent surface material 110 includes a region where the second adhesive layer 116 is provided and a region where the second adhesive layer 116 is not provided.

  The constituent material of the second adhesive layer 116 may be the same as the constituent material of the first adhesive layer 114, or may be different from the constituent material of the first adhesive layer 114. Since the second adhesive layer 116 is bonded to the liquid crystal display panel 106, it is preferable that the second adhesive layer 116 can be bonded without leaving a gap at a lighter bonding pressure so as not to adversely affect the liquid crystal display panel 106. The thickness of the second adhesive layer 116 may be the same as the thickness of the first adhesive layer 114 or may be different from the thickness of the first adhesive layer 114.

(First protective film 118 and second protective film 120)
The first protective film 118 and the second protective film 120 are for protecting the first adhesive layer 114 or the second adhesive layer 116 when not in use, and when used, the first adhesive layer 114 or the second protective film 120 are used. The second adhesive layer 116 is peeled off. Therefore, the first protective film 118 and the second protective film 120 are required not to be firmly adhered to the first adhesive layer 114 or the second adhesive layer 116. From this viewpoint, it is preferable to use a base film having relatively low adhesion made of polyethylene, polypropylene, fluorine-based resin, or the like as the first protective film 118 and the second protective film 120.

<Digital Signage 100>
Returning to FIGS. 1 and 2, the digital signage 100 includes the liquid crystal display unit 104, the transparent surface material 108 with the adhesive layer, and the window glass 102 as described above. The 1st adhesion layer 114 of transparent surface material 108 with an adhesion layer is pasted on this window glass 102, and the pasting device of the embodiment mentioned below is used for this pasting.

  The liquid crystal display panel 106 of the liquid crystal display unit 104 is bonded to the second surface 110b of the transparent surface material 108 with the adhesive layer.

  As the window glass 102, for example, an existing window glass used in a store, an office or the like can be exemplified.

  The transparent surface material with an adhesive layer 108 is obtained by peeling the first protective film 118 and the second protective film 120 from the transparent surface material with an adhesive layer 108 shown in FIG.

  As shown in FIG. 2, the liquid crystal display unit 104 includes a liquid crystal display panel 106, a pair of polarizing plates 122 and 124, a backlight 126, a frame 128, and a case 130. The liquid crystal display panel 106 includes a pair of glass substrates 132 and 134 and liquid crystal (not shown) sealed between the glass substrates 132 and 134. The pair of glass substrates 132 and 134 includes a TFT element substrate including a thin film transistor and a color filter substrate including a color filter.

  The backlight 126 includes a light emitting element 136 such as a light emitting diode, a light guide plate 138, a prism sheet (not shown), a plurality of optical films 140 such as a light diffusion sheet, and a mirror 142. Light emitted from the light emitting element 136 enters the light guide plate 138 and is reflected by the mirror 142 while being guided inside, and is emitted toward the liquid crystal display panel 106 via the plurality of optical films 140. The plurality of optical films 140 have a function of making the intensity of light emitted from the light guide plate 138 uniform. Therefore, the plurality of optical films 140 and the liquid crystal display panel 106 are arranged at intervals.

  Since the liquid crystal display panel 106 is relatively lightweight, the liquid crystal display panel 106 is supported by the window glass 102 only by being bonded to the window glass 102 via the transparent surface material 108 with the adhesive layer. However, since the mass of the backlight 126 is large, it is difficult to support the entire liquid crystal display unit 104 on the window glass 102 only by bonding the liquid crystal display panel 106 to the window glass 102. Therefore, among the constituent members of the liquid crystal display unit 104, the backlight 126 needs to be supported by the window glass 102 separately from the liquid crystal display panel 106.

  Therefore, the backlight 126 is fixed to the transparent surface material 108 with the adhesive layer via an angle 144 whose section is L-shaped. Specifically, the angle 144 is fixed to the light shielding portion 112 on the second surface 110 b of the transparent surface material 110 by a double-sided adhesive tape 146. That is, the backlight 126 is fixed to the frame 128, the frame 128 is fixed to the case 130, the case 130 is fixed to the angle 144 by the bolt 148, and the angle 144 is fixed to the light shielding unit 112. Thereby, the backlight 126 is supported by the window glass 102.

  Here, the plate-like body means one having two main surfaces having a large area and a side surface having a small area connecting the main surfaces. For example, a single plate glass, a multi-layer glass, an organic glass, a glass plate and other materials. For example, a composite with a synthetic resin plate or a film may be used. A laminated body means what bonded each 1st plate-shaped body and 2nd plate-shaped body through the adhesion layer, and the adhesion layer is a part of main surface. It only has to exist. The first plate-like body and the second plate-like body may have the same area or different areas, and may have the same function or different functions.

  Moreover, the laminated body which bonded the 1st plate-shaped body and the 2nd plate-shaped body through the adhesion layer can also become a plate-shaped body, when bonding with another plate-shaped body.

<Manufacturing method of laminate>
Next, the manufacturing method of the laminated body of this embodiment is demonstrated.

  The manufacturing method of the laminated body of this embodiment is the method of bonding a 1st plate-shaped body and a 2nd plate-shaped body through an adhesion layer, and a 1st plate-shaped body and a 2nd plate-shaped body. Although a body is not specifically limited, For example, it is preferable to apply to the following plate-shaped bodies.

  Examples of the first plate-like body include a transparent substrate such as a glass plate and a transparent plastic plate such as a transparent acrylic resin. 1-4, the existing window glass 102 is illustrated as a 1st plate-shaped object.

  Examples of the second plate-like body include image display panels such as a liquid crystal display panel (LCD), a plasma display panel (PDP), and an organic EL display panel (OELD). Can be mentioned. 1-4, the liquid crystal display panel 106 is illustrated as a 2nd plate-shaped object.

  Moreover, the manufacturing method of the laminated body of this embodiment can be applied to any of the state where the first plate-like body is inclined in the vertical direction, the vertical direction, or the state in the horizontal direction.

  In the following embodiment, an example of factory bonding in which a liquid crystal display panel 106 is bonded to a glass plate 102 that is a window glass before being fixed to a building via an adhesive layer to produce a laminate will be described. However, this invention is not limited to this aspect, It can apply also to the on-site bonding which bonds the liquid crystal display panel 106 to the existing window glass fixed to the building through the adhesion layer. Further, the present invention can also be applied to a method of manufacturing a laminate by bonding the liquid crystal display panel 106 to the glass plate 102 or the window glass through the transparent surface material 108 with an adhesive layer.

  The glass plate 102 shall be arrange | positioned in the horizontal direction. Moreover, the screen size of the liquid crystal display panel 106 to be bonded is 42 inches as an example. Note that the liquid crystal display panel 106 can be directly bonded to the glass plate 102 via an adhesive layer. Therefore, in the embodiment, a part of the transparent surface material with the adhesive layer 108 is not illustrated, and only the first adhesive layer 114 is left, and a method for manufacturing the laminate will be described. Hereinafter, the adhesive layer 114 will be described.

<First Embodiment>
The manufacturing method of the laminated body of 1st Embodiment is demonstrated.

  FIGS. 5A and 5B are explanatory views showing a method of manufacturing the laminate according to the present embodiment, FIG. 5A is a plan view, and FIG. 5B is a side view. Moreover, FIG. 6 is explanatory drawing which shows the whole manufacturing method of the laminated body of this embodiment.

(Separation process)
As shown in FIGS. 5 and 6A, in the atmosphere, the glass plate 102 as the first plate-like body is installed in the horizontal direction, and one main surface 102a of the glass plate 102 is directed upward in the vertical direction. Be placed. The liquid crystal display panel 106, which is the second plate-like body, has an adhesive layer 114 provided on one main surface 106a. The liquid crystal display panel 106 is arranged with respect to the glass plate 102 so that the main surface 106a having the adhesive layer 114 and the main surface 102a of the glass plate 102 face each other. The main surface 106a of the liquid crystal display panel 106 is arranged downward in the vertical direction.

  In the present embodiment, the adhesive layer 114 is provided on the liquid crystal display panel 106 having a small area. However, the adhesive layer 114 may be provided on the glass plate 102 without being limited thereto. In the case of on-site bonding, the liquid crystal display panel 106 can be directly bonded to the window glass by providing the adhesive layer 114 on the liquid crystal display panel 106 to be carried, and the efficiency of the entire work can be increased. preferable.

  The elastic body 10 is disposed between the glass plate 102 and the liquid crystal display panel 106 that are disposed to face each other, in a non-bonding region of the main surface 102a of the glass plate 102 and in a non-bonding region of the main surface 106a of the liquid crystal display panel 106. Is placed. Here, a non-bonding area | region means the part which does not contact the adhesion layer 114 after bonding in the two main surfaces 102a and 106a bonded together.

  On the other hand, the bonding region refers to a region in contact with the adhesive layer 114 after bonding or a region where contact is planned in the two main surfaces 102a and 106a bonded to each other.

  The elastic body 10 is disposed on one edge 106b and the other edge 106c of the liquid crystal display panel 106 that face each other. The elastic body 10 can dispose (separate) the glass plate 102 and the liquid crystal display panel 106 with a predetermined distance. Thereby, the distance of the glass plate 102 and the liquid crystal display panel 106 can be maintained before bonding, and the unexpected contact with the glass plate 102 and the liquid crystal display panel 106 can be prevented.

  In order to prevent contact between the glass plate 102 and the liquid crystal display panel 106 in the separation step, the elastic body 10 has an upward biasing force that resists the weight of the liquid crystal display panel 106.

  The elastic body 10 is preferably temporarily attached to either the glass plate 102 or the liquid crystal display panel 106. This is because the elastic body 10 can be easily removed after the pasting is completed by temporarily attaching the elastic body 10. It is preferable to temporarily attach the elastic body 10 to the liquid crystal display panel 106. This is because the position adjustment becomes easy.

  As shown in FIG. 5, a roller 12 that is a pressing member is prepared above one edge 106b. In this embodiment, although the roller 12 was illustrated as an example of a rolling member as a press member, it is not limited to this, What is necessary is just a member which has a curved surface and can roll.

(Bonding process)
As shown in FIG. 6 (B), the roller 12 positioned above one edge 106b is moved in the bonding direction indicated by the arrow by a roller driving device (not shown). The bonding direction refers to a direction in which the distance between the window glass 102 and the liquid crystal display panel 106 is shortened.

  The liquid crystal display panel 106 is pressed by moving the roller 12 in the bonding direction. Furthermore, the elastic body 10 present at the edge 106b is gradually elastically deformed in the bonding direction. The liquid crystal display panel 106 is elastically deformed in the bonding direction along with the elastic deformation of the elastic body 10 present at the edge 106b. That is, the liquid crystal display panel 106 is bent so that the distance between the glass plate 102 and the liquid crystal display panel 106 is shortened. The roller 12 relatively elastically deforms the liquid crystal display panel 106 in the bonding direction against the upward biasing force (elastic force) of the elastic body 10.

  By moving the roller 12 in the bonding direction, the bonding region of the main surface 102a of the glass plate 102 and the bonding region of the main surface 106a of the liquid crystal display panel 106 are brought into contact with each other via the adhesive layer 114. To start.

  The elastic body 10 is also arranged on the other edge 106c in the moving direction of the roller 12. The elastic body 10 present at the other edge portion 106c maintains a distance that allows the glass plate 102 and the liquid crystal display panel 106 to be separated from each other. It can be suppressed that the window glass 102 and the liquid crystal display panel 106 come into contact with each other before being pressed by the roller 12 and bubbles are mixed therein.

  Next, as shown in FIG. 6C, the roller 12 is rolled from one edge 106b toward the other edge 106c. As the roller 12 moves, the position where the glass plate 102 and the liquid crystal display panel 106 are in contact, that is, the bonding position between the glass plate 102 and the liquid crystal display panel 106 is changed from one edge 106b to the other edge 106c. Moved towards.

  Since the roller 12 moves while elastically deforming the liquid crystal display panel 106, the distance between the glass plate 102 and the liquid crystal display panel 106 can be continuously reduced from one edge 106b toward the other edge 106c. .

  Moreover, if the bonding position is moved, the distance L between the elastic body 10 present on the other edge 106c and the bonding position is shortened. Thereby, the urging | biasing force of the bonding direction with respect to the elastic body 10 of the liquid crystal display panel 106 in the other edge part 106c of the liquid crystal display panel 106 will also increase. When the urging force of the liquid crystal display panel 106 against the elastic body 10 is increased, the elastic body 10 is gradually elastically deformed in a direction in which the thickness is reduced. By elastically deforming the elastic body 10, the contact angle θ between the glass plate 102 and the liquid crystal display panel 106 can be prevented from increasing. If the contact angle θ is too large, that is, if the radius of curvature of the liquid crystal display is small, the liquid crystal display panel 106 may be damaged. On the other hand, if the contact angle θ is too small, the glass plate 102 and the liquid crystal display panel 106 may come into contact before being pressed by the roller 12, so that the contact angle θ changes in the bonding process. It is important to prevent this.

  Therefore, it is preferable that the elastic body 10 has an urging force that is elastically deformed by the urging force of the liquid crystal display panel 106 and is smaller than the adhesive force of the adhesive layer 114 against the elastic force of the liquid crystal display panel 106. Thereby, it is not necessary to increase the bonding load, and it is possible to prevent the liquid crystal display panel 106 from being peeled off from the glass plate 102 by an urging force after bonding. As the elastic body 10, rubber, foamed rubber, sponge, spring or the like can be used. As the foam rubber, for example, chloroprene foam rubber (manufactured by Inoac Corporation, closed cell, Asker C-type hardness 25, thickness 3 mm) can be used.

  A viscoelastic body may be used instead of the elastic body 10 used in the present embodiment. Even if a viscoelastic body is used, the same effect as the elastic body 10 can be exhibited. As the viscoelastic body, a simulated body of a viscoelastic body having a viscous effect as a whole can be used by putting a fluid such as water in clay or a tube-shaped bag and providing a narrow throttle in the fluid path.

  In the present embodiment, the liquid crystal display panel 106 having a small area is elastically deformed and curved, but the glass plate 102 having a large area may be elastically deformed and curved. In addition, when the window glass is installed in structures, such as a building, it is preferable to elastically deform the liquid crystal display panel 106. FIG.

  Next, as shown in FIG. 6D, by rolling the roller 12 to the other edge portion 106c, the liquid crystal display panel is bonded via the bonding region of the main surface 102a of the glass plate 102 and the adhesive layer 114. The bonding area of the main surface 106a of 106 can be bonded. When the bonding is finished, a laminate is manufactured in which the glass plate 102 and the liquid crystal display panel 106 are bonded to each other through the adhesive layer 114 between the main surfaces 102a and 106a.

  In the above bonding step, the distance between the glass plate 102 and the liquid crystal display panel 106 can be maintained, and the distance between the glass plate 102 and the liquid crystal display panel 106 is continuous from the start of bonding to the end of bonding. Since the contact angle between the glass plate 102 and the liquid crystal display panel 106 can be prevented from changing abruptly, bubbles can be prevented from being caught at the interface of the adhesive layer 114.

  The roller 12 can be moved by an operator instead of the roller driving device.

(Removal process)
Next, as shown in FIG. 6E, it is preferable to remove the elastic body 10 disposed between the glass plate 102 and the liquid crystal display panel 106. This is because the adhesive force of the adhesive layer 114 is reduced by the urging force of the elastic body 10, and the glass plate 102 and the liquid crystal display panel 106 may be peeled off.

  Since the elastic body 10 is temporarily attached to the glass plate 102 or the liquid crystal display panel 106 as described above, it can be easily removed. As a temporary attachment method, a method of adhering the glass plate 102 or the liquid crystal display panel 106 and the elastic body 10 with an adhesive layer having a low adhesive force can be employed.

<Second Embodiment>
Next, the manufacturing method of the laminated body of 2nd Embodiment is demonstrated.

  FIG. 7 is an explanatory view showing the entire manufacturing method of the laminate according to the present embodiment.

(Separation process)
As shown in FIG. 7A, the elastic body 10 is one edge 106b and the other edge 106c of the liquid crystal display panel 106, and the glass plate 102 and the liquid crystal display panel 106 are not bonded. Placed in the area. By the elastic body 10, the window glass 102 and the liquid crystal display panel 106 are arranged (separated) at a predetermined distance.

  A roller 12 is prepared above the edge of the liquid crystal display panel 106 other than the edge. In the present embodiment, the roller 12 is prepared above the central portion of the liquid crystal display panel 106.

(Bonding process)
As shown in FIG. 7B, the roller 12 is moved in the bonding direction by a roller driving device (not shown), and the liquid crystal display panel 106 is pressed by the roller 12. By the pressing of the roller 12, the liquid crystal display panel 106 is elastically deformed in the bonding direction, and the bonding between the glass plate 102 and the liquid crystal display panel 106 is started via the adhesive layer 114.

  As shown in FIG. 7C, by rolling the roller 12 to one edge portion 106b, the bonding position between the glass plate 102 and the liquid crystal display panel 106 is changed from the edge portion (in this embodiment, the center portion). ) To one edge 106b. The bonding region of the main surface 106a from the center portion of the liquid crystal display panel 106 to one edge portion 106b is bonded to the bonding region of the main surface 102a of the glass plate 102 via the adhesive layer 114.

  As shown in FIG. 7D, by rolling the roller 12 from one edge 106b to the other edge 106c, the bonding position between the glass plate 102 and the liquid crystal display panel 106 is changed to the other edge 106c. Move to. The bonding region of the main surface 106 a from the center of the liquid crystal display panel 106 to the other edge 106 c is bonded to the bonding region of the main surface 102 a of the glass plate 102 via the adhesive layer 114.

  The roller 12 can be moved by an operator instead of the roller driving device.

  Similarly to the first embodiment, it is possible to prevent bubbles from being caught in the interface of the adhesive layer 114 existing between the glass plate 102 and the liquid crystal display panel 10.

(Removal process)
Next, as shown in FIG. 7E, it is preferable to remove the elastic body 10 disposed between the glass plate 102 and the liquid crystal display panel 106.

<Third Embodiment>
The manufacturing method of the laminated body of 3rd Embodiment is demonstrated with reference to FIGS.

(Separation process)
FIG. 8 is an explanatory view showing a method for manufacturing a laminate, FIG. 8 (A) is a plan view, and FIG. 8 (B) is a side view. As shown in FIG. 8 (A), the elastic body 10 is composed of one edge 106b and the other edge 106c of the liquid crystal display panel 106 facing each other, and one edge 106d and the other edge 106e facing each other. And it arrange | positions in the non-bonding area | region of the glass plate 102 and the liquid crystal display panel 106. FIG. In this embodiment, the elastic body 10 is comprised by several division | segmentation elastic bodies 10a-10e.

  The divided elastic body 10a is arranged at the edge 106b, and the divided elastic body 10e is arranged at the edge 106c. In addition, the split elastic bodies 10b to 10d are disposed from the one edge portion 106b toward the other edge portion 106c on each of the one edge portion 106d and the other edge portion 106e.

  The glass plate 102 and the liquid crystal display panel 106 are arranged (separated) at a predetermined distance by the divided elastic bodies 10a to 10e.

  A roller 12 a is prepared above one edge 106 b of the liquid crystal display panel 106. However, the length of the roller 12 a is shorter than the length of the short side of the liquid crystal display panel 106.

(Bonding process)
9-11 is explanatory drawing which shows the manufacturing method of a laminated body. As shown in FIG. 9A, the roller 12a is moved in the laminating direction (perpendicular to the paper surface) by a roller driving device (not shown). A part of the liquid crystal display panel 106 is pressed by the roller 12a, and the liquid crystal display panel 106 is elastically deformed in the bonding direction. Then, a part of the divided elastic body 10a and the divided elastic body 10b existing at one edge 106d are elastically deformed, and the bonding of the glass plate 102 and the liquid crystal display panel 106 via the adhesive layer 114 is started. .

  Next, as shown in FIG. 9B, the roller 12a is moved along the arrow. Roller 12a is moved back and forth in the direction from one edge 106b to the other edge 106c (within a range of about 1/3 from one edge 106b of the long side of the liquid crystal display panel 106), The edge portion 106d is moved toward the other edge portion 106e. By the movement of the roller 12a, the bonding position between the glass plate 102 and the liquid crystal display panel 106 is gradually moved from one edge 106b to the other edge 106c.

  Next, as shown in FIG. 9C, the bonding surface of the main surface 106 a from one edge 106 b of the liquid crystal display panel 106 to about ３ is the bonding region of the main surface 102 a of the glass plate 102. The adhesive layer 114 is used for bonding. And the division | segmentation elastic bodies 10a and 10b which exist in the area | region which finished bonding are removed.

  Next, as shown in FIGS. 10D and 10E, the roller 12a is moved along the arrow. The roller 12a is moved back and forth from one edge 106b toward the other edge 106c (within a range of about 1/3 to 2/3 of the long side of the liquid crystal display panel 106), and the other edge It moves from the part 106e toward one edge part 106d.

  Next, as shown in FIG. 10 (F), the bonding region of the main surface 106a from about 1/3 to about 2/3, starting from one edge 106b, which has not been bonded to the liquid crystal display panel 106. Is bonded to the bonding region of the main surface 102 a of the glass plate 102 via the adhesive layer 114. And the division | segmentation elastic body 10c which exists in the area | region which finished bonding is removed.

  Next, as shown in FIGS. 11G and 11H, the roller 12a is moved along the arrow. Roller 12a is moved back and forth from one edge 106b toward the other edge 106c (within the range of 2/3 of the long side of the liquid crystal display panel 106 to the other edge 106c) and on one edge It is moved from the portion 106d toward the other edge portion 106e.

  The roller 12a can be moved by an operator instead of the roller driving device.

  Next, as shown in FIG. 11 (I), the bonding region of the remaining main surface 106 a that has not been bonded to the liquid crystal display panel 106 is bonded to the bonding region of the main surface 102 a of the glass plate 102. It is pasted via 114. And the division | segmentation elastic bodies 10d and 10e which exist in the area | region which finished bonding are removed.

  In this embodiment, the divided elastic bodies 10a to 10e constituting the elastic body 10 are sequentially removed at a stage before the bonding between the glass plate 102 and the liquid crystal display panel 106 is completed. Since it has removed in the stage before completing bonding, the removal process of the elastic bodies 10a-10e after completion of bonding becomes unnecessary, and during the bonding, the urging force of the elastic bodies 10a-10e causes the adhesive layer 114 to be removed. It can suppress that adhesive force falls.

  Although the case where the elastic body 10 is configured by a plurality of divided elastic bodies 10a to 10e has been described as an example, the viscoelastic body may be configured by a plurality of divided viscoelastic bodies.

  Similarly to the first embodiment, it is possible to prevent bubbles from being caught in the interface of the adhesive layer 114 existing between the glass plate 102 and the liquid crystal display panel 10.

DESCRIPTION OF SYMBOLS 10 ... Elastic body, 10a-10e ... Division | segmentation elastic body, 12, 12a ... Roller, 102 ... Glass plate, 102a ... Main surface, 106 ... Liquid crystal display panel, 106a ... Main surface, 106b-106e ... Edge, 114 ... Adhesion layer

Claims (10)

A method for producing a laminate in which the first plate and the second plate are bonded via an adhesive layer in the atmosphere,
By the elastic body or the viscoelastic body arranged between the non-bonding region of the first plate-shaped body and the non-bonding region of the second plate-shaped body facing each other, the first plate-shaped body and A separation step of disposing a distance from the second plate-like body;
The first plate-like body or the second plate-like body is deformed in the bonding direction relative to the elastic body or the viscoelastic body by a pressing member, whereby the first plate-like body or the second plate-like body is interposed through the adhesive layer. The plate-like body and the second plate-like body are brought into contact with each other to start bonding, and by moving the pressing member, the bonding position is moved, and the elasticity existing in the moving direction of the pressing member. Deforming the body or the viscoelastic body, while continuously reducing the distance between the first plate-like body and the second plate-like body, the bonding region of the first plate-like body and the The manufacturing method of the laminated body provided with the bonding process of bonding the bonding area | region of a 2nd plate-shaped body through the said adhesion layer.   In the bonding step, bonding is started at one edge of the second plate-like body, and the pressing member is moved toward the other edge facing the one edge. The manufacturing method of the laminated body of description.   In the pasting step, pasting is started at other than the edge of the second plate-like body, the pressing member is moved toward one edge, and then from the one edge, the one edge The manufacturing method of the laminated body of Claim 1 which moves the said press member toward the other edge part which opposes an edge part.   The manufacturing method of the laminated body as described in any one of Claim 1 to 3 whose area of a said 1st plate-shaped body is larger than the area of a said 2nd plate-shaped body.   The manufacturing method of the laminated body of Claim 4 with which the said adhesion layer is provided in the said 2nd plate-shaped object.   The method for manufacturing a laminate according to any one of claims 1 to 5, wherein the first plate-like body is a glass plate, and the second plate-like body is an image display panel.   The method for manufacturing a laminate according to claim 6, wherein the glass plate is a window glass.   The manufacturing method of the laminated body as described in any one of Claim 1 to 7 provided with the removal process which removes the said elastic body or the said viscoelastic body after the said bonding process.   In the bonding step, the elastic body or the viscoelastic body is composed of a plurality of divided elastic bodies or divided viscoelastic bodies, and the divided portions existing in the region where the bonding is finished while moving the pressing member. The manufacturing method of the laminated body as described in any one of Claim 1 to 7 which removes an elastic body or the said division | segmentation viscoelastic body sequentially.   The method for manufacturing a laminate according to any one of claims 1 to 9, wherein the pressing member is a rolling member.

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