JP2017187515A - Substrate laminating apparatus, laminating method and image display apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bonding apparatus and a bonding method for a substrate, by which a second substrate can be stably bonded on only a bonding surface side of a first substrate, and an image display device.SOLUTION: Referring to a bonding method of an embodiment of the present invention, in a bonding step, vertical movement of a roller 16 is guided by a rail 56 of a guide part 18 detachably attached to a windowpane 102. While the roller 16 presses a bonding surface of a liquid crystal panel 106 to a surface on the bonding surface side of the windowpane 102, the guide part 18 transfers a bonding reaction force that is transferred from the windowpane 102 to the roller 16, to the surface on the bonding surface side of the windowpane 102 through the guide part 18. Thereby, as the windowpane 102 is firmly supported by the pressing force and the bonding reaction force closed between the windowpane 102 and the bonding device 10, the liquid crystal panel 106 can be stably bonded on only the bonding surface side of the windowpane 102.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a substrate bonding apparatus, a bonding method, and an image display apparatus.

  In recent years, by attaching a liquid crystal panel (second substrate: image display panel) to a window glass (first substrate) of a building via an adhesive layer, digital signage (image display device) is installed on site. It is being considered to assemble. According to this digital signage, a passer-by can check the display content of the liquid crystal panel from the outside of the store or office through the window glass, and can be used effectively as a signboard, an advertisement, or the like.

  By the way, in the digital signage of the said form, since it influences an image quality when air bubbles are involved in the adhesion layer interface between a window glass and a liquid crystal panel at the time of pasting, it is hoped that it pastes without entraining air bubbles. It is rare.

  Patent Document 1 discloses a bonding apparatus that bonds a cover glass on the upper surface of a touch panel (also referred to as a liquid crystal panel) held in a horizontal state.

  In the bonding method using the bonding apparatus of Patent Document 1, first, the liquid crystal panel is sucked and held on the upper surface of the flat suction table installed in the horizontal direction, and both end portions of the cover glass provided with the adhesive layer are respectively held by the holding portions. Hold. Next, the cover glass is bent and held by a cantilever bending method by relatively changing the heights of both holding portions. Next, in order to bond the cover glass to the liquid crystal panel, a certain pressure (pressing force) is applied to the cover glass via a rotating roller, and one end of the cover glass is bonded to the liquid crystal panel. Thereafter, while maintaining the pressure of the rotating roller, while moving the rotating roller toward the other end of the cover glass, the holding portion on the other end side is moved downward to gradually bend the other end of the cover glass. While returning to the horizontal position, the entire surface of the cover glass is bonded to the liquid crystal panel.

JP2013-80046A

  Although the bonding apparatus of patent document 1 is an apparatus which bonds glass board | substrates, it is not an apparatus which bonds a liquid crystal panel to an existing window glass, without involving a bubble. That is, it is not an apparatus for bonding a liquid crystal panel to a window glass at a construction site where the window glass is installed.

  In addition, in the case of so-called on-site bonding, where the liquid crystal panel is bonded to the window glass, the window glass is warped by the pressing force of the rotating roller, so that the liquid crystal panel can be stably bonded without entraining air bubbles in the window glass. It was difficult to combine. For example, as a method of reducing the warpage of the window glass, it can be considered that the non-bonding surface of the existing window glass is supported by a support member such as a surface plate, but depending on the location where the window glass exists, non-bonding It may be difficult to support the surface.

  This invention is made in view of such a situation, does not make the operation | work of the non-bonding surface side of a 1st board | substrate essential, A bubble is made into a bonding surface a 1st board | substrate and a 2nd board | substrate. It aims at providing the bonding apparatus of the board | substrate which can be bonded without involving, the bonding method, and an image display apparatus.

  In order to achieve the above object, the substrate bonding apparatus according to one embodiment of the present invention is provided with a second substrate via an adhesive layer on a first substrate provided to be inclined with respect to the floor surface in the vertical direction or the vertical direction. In the laminating apparatus for laminating a substrate, a bending means for curving the bonding surface of the second substrate in a convex shape with respect to the first substrate, and pressing the second substrate toward the first substrate And a pressing means that moves from one end to the other end of the second substrate while flattening the second substrate that is bent by the bending means, and is detachably attached to the first substrate, While guiding the movement of the pressing means, and pressing the bonding surface of the second substrate against the first substrate by the pressing means, the reaction force from the first substrate is applied to the first substrate. And guide means for transmitting to the substrate.

  In order to achieve the above-described object, the substrate bonding method of one embodiment of the present invention is configured so that the second substrate is provided on the first substrate that is provided with an inclination from the vertical direction or the vertical direction with an adhesive layer interposed therebetween. In the bonding method of bonding a substrate, the bending step of bending the bonding surface of the second substrate in a convex shape with respect to the first substrate, and one end of the second substrate are pressed by the pressing means. While pressing toward one substrate and moving the pressing means from the one end toward the other end opposite to the one end, the curvature of the second substrate existing in the moving direction is corrected flatly, A bonding step of sequentially bonding to the first substrate from one end to the other end of the bonding surface of the second substrate, and in the bonding step, the pressing means includes the first step. The movement is guided by guide means detachably attached to the substrate. When the guide means presses the bonding surface of the second substrate against the first substrate by the pressing means, the guide means transmits the bonding reaction force from the first substrate transmitted to the pressing means. It transmits to a 1st board | substrate, It is characterized by the above-mentioned.

  According to one embodiment of the present invention, when the second substrate is bonded to the first substrate, first, the second substrate is bonded to the second substrate by curving the second substrate in an arc shape in the bending step. The mating surface is curved convexly with respect to the first substrate.

  Next, in the bonding step, one end of the second substrate is pressed toward the first substrate by the pressing means. Thus, one end of the second substrate is bonded to the first substrate. Thereafter, the pressing means is moved from one end of the second substrate toward the other end. Thereby, since the curvature of the 2nd board | substrate which exists in the moving direction of a press means is correct | amended flatly, the bonding surface of a 2nd board | substrate sequentially turns to a 1st board | substrate toward the other end from one end. It will be pasted. By the action of such pressing means, the bonding surface of the second substrate is bonded to the first substrate without entraining bubbles.

  In the bonding step, the movement of the pressing means is guided by guide means that is detachably attached to the first substrate. And when the guide means presses the bonding surface of the second substrate against the first substrate by the pressing means, the bonding reaction force from the first substrate transmitted to the pressing means is applied to the first substrate. introduce. Thereby, the first substrate receives the pressing force from the pressing means and the bonding reaction force of the first substrate, but the force line of the pressing force and the force line of the bonding reaction force are in opposite directions, The power is also equal. For this reason, even if the non-bonding surface is not supported by the support member, the first substrate is firmly supported by the pressing force and the bonding reaction force that are closed between the first substrate and the bonding apparatus. Is done.

  Therefore, even if the second substrate is bonded only from the bonding surface side of the first substrate, the warp of the first substrate due to the pressing force of the pressing means can be suppressed. Thus, according to one embodiment of the present invention, the second substrate can be stably bonded only from the bonding surface side of the first substrate.

  One embodiment of the present invention is suitable for on-site bonding of a second substrate to an existing first substrate, but is not limited to on-site bonding, for example, the first substrate at a bonding factory. It is applicable also to the factory bonding which bonds a 2nd board | substrate.

  It is preferable that the one aspect | mode of the board | substrate bonding apparatus of this invention is a separate body which can isolate | separate the said press means and the said guide means.

  In one aspect of the substrate bonding method of the present invention, in the bonding step, after the guide unit is attached to the first substrate, the pressing unit separated from the guide unit is guided by the guide unit. Are preferably moved.

  In one embodiment of the present invention, the guide unit and the pressing unit are configured to be separable, and thus the weight is lighter than that in which the guide unit and the pressing unit are not separable. This facilitates the attachment and removal operations of the guide means to the first substrate, and the attachment and removal operations of the pressing means to the guide means.

  In one aspect of the substrate bonding apparatus of the present invention, it is preferable that the bending means bends the second substrate by an urging force.

  In one aspect of the substrate bonding method of the present invention, in the bending step, the second substrate is preferably bent by an urging force.

  According to one aspect of the present invention, the urging force of the bending portion is transmitted to the second substrate, and the second substrate is bent.

  According to one aspect of the substrate bonding apparatus and the bonding method of the present invention, it is preferable that the first substrate is a window glass and the second substrate is an image display panel.

  In order to achieve the above object, the image display device of one embodiment of the present invention is configured by the bonding method of the present invention in which the first substrate is a window glass and the second substrate is an image display panel. It is characterized by that.

  According to one embodiment of the present invention, an image display device with favorable image quality that is assembled without involving bubbles can be provided.

  As described above, according to the substrate bonding apparatus, the bonding method, and the image display device of the present invention, the work on the non-bonding surface side of the first substrate is not essential, and the first substrate and the second substrate are not required. The substrate can be bonded without entraining air bubbles on the bonding surface.

Vertical section of image display device Enlarged sectional view of part A in FIG. (A) is a front view of the bonding apparatus, (B) is a side view of the bonding apparatus. Illustration of plate-like member Illustration of pasting load distribution by roller Arrow view seen from line C-C 'in FIG. Side view of the main part showing the state of bonding with a roller Explanatory drawing of bending part Explanatory drawing which showed the assembly procedure of the bonding apparatus in the field bonding Explanatory drawing which showed the assembly procedure of the bonding apparatus in the field bonding Explanatory drawing which showed the assembly procedure of the bonding apparatus in the field bonding Explanatory drawing of sponge member at the time of pasting Explanatory drawing which showed the assembly procedure of the bonding apparatus in the field bonding Assembly completed drawing of the bonding device in the field bonding Explanatory drawing which showed the pasting process in field pasting in time series

  Hereinafter, preferred embodiments of a substrate bonding method, a bonding apparatus, and an image display device according to the present invention will be described with reference to the accompanying drawings.

  First, the image display apparatus bonded and assembled by the board | substrate bonding apparatus and the bonding method of embodiment is demonstrated.

  FIG. 1 is a longitudinal sectional view of the image display device 100, and FIG. 2 is an enlarged sectional view of a portion A in FIG.

<Image display device 100>
The image display apparatus 100 according to the present embodiment includes a window glass 102 that is a first substrate, a first adhesive layer 114, a glass plate 110 that is a transparent surface material, a second adhesive layer 116, and a second substrate. The liquid crystal panel 106 is laminated in this order. Hereinafter, each member will be described.

(First substrate)
An example of the first substrate is a transparent member. For example, the existing transparent member used for a store, an office, etc. is mentioned. Examples of the transparent member include a resin such as glass and acrylic, or a laminate of glass and resin.

(Transparent surface material)
The transparent surface material is a plate-like body interposed between the liquid crystal panel 106 and the window glass 102 when the liquid crystal panel 106 described later is bonded to the window glass 102. Examples of the transparent face material 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 the liquid crystal panel 106 and reflected light, a transparent surface material It is most preferable to use a glass plate. As a transparent face material, the use of a glass plate is also preferred 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.

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

  What is necessary is just to determine the shape of a transparent surface material according to the planar shape of the liquid crystal panel 106 which is bonding object, and is a rectangle as an example. In terms of mechanical strength, transparency, etc., the thickness of the transparent face material is preferably about 0.2 to 2.0 mm if it is a glass plate. In order not to make the observer strongly feel the depth of the display image, the thickness of the transparent surface material is more preferably about 0.2 to 1.1 mm. If it is a resin plate, the thickness of the transparent face material is preferably about 0.1 to 1.0 mm.

(Shading part)
It is preferable that the transparent face material has a light shielding portion at the peripheral end portion. By providing the light shielding portion, when the liquid crystal panel 106 is bonded to the window glass 102, a wiring member such as a flexible printed wiring board connected to the liquid crystal panel 106 can be hidden. When the transparent surface material is a glass plate, it is preferable that the light shielding part 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 can be formed using various thin film forming methods.

(Adhesive layer)
The pressure-sensitive adhesive layer is made of a transparent resin obtained by curing a liquid photocurable resin composition. The photocurable resin composition that is a raw material for the adhesive layer is preferably a liquid composition containing a photocurable curable compound, a photopolymerization initiator, and, if necessary, a non-curable oligomer. The non-curable oligomer is preferably an oligomer having a hydroxyl group that does not cause a curing reaction with the curable compound in the composition when the photo-curable resin composition is cured. The transparent resin of the first adhesive layer 114 and the second adhesive layer 116 may be the same or different.

  The thickness of the adhesive layer is preferably about 0.1 to 2.0 mm, and more preferably about 0.2 to 0.8 mm. The thickness of the first adhesive layer 114 and the second adhesive layer 116 may be the same or different.

  The areas of the first adhesive layer 114 and the second adhesive layer 116 are adjusted according to the size of the transparent surface material. The areas of the first adhesive layer 114 and the second adhesive layer 116 may be the same or different. As an example of the case where the areas are different, when the second surface 110b of the glass plate 110 has the light shielding portion 112, the first adhesive layer 114 is provided over the entire area of the first surface 110a of the glass plate 110. On the other hand, the second adhesive layer 116 is provided in a partial region of the second surface 110 b of the glass plate 110. Thereby, the 2nd surface 110b of the glass plate 110 has the area | region in which the 2nd adhesion layer 116 was provided, and the area | region in which the 2nd adhesion layer 116 was not provided.

  As a 2nd board | substrate, image display panels, such as a liquid crystal display panel (LCD: Liquid Crystal Display), a plasma display panel (PDP: Plasma Display Panel), an organic EL display panel (OELD: Organic Electro Luminescence Display), are mentioned, for example. be able to.

  As shown in FIG. 2, the liquid crystal display unit 104 includes a liquid crystal panel 106, a pair of polarizing plates 122 and 124, a backlight 126, a frame 128, and a case 130. The liquid crystal 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 is incident on the light guide plate 138 and reflected by the mirror 142 while being guided inside, and is emitted toward the liquid crystal 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 panel 106 are arranged at intervals.

  The liquid crystal panel 106 is supported on the window glass 102 via an adhesive layer or an adhesive layer and a glass plate 110. Since the liquid crystal panel 106 and the backlight 126 are independent, the backlight 126 is supported by the window glass 102 separately from the liquid crystal panel 106.

  The backlight 126 is supported by the window glass 102 via an angle 144 whose section is L-shaped. In FIG. 1, the angle 144 is fixed to the light shielding portion 112 on the second surface 110 b of the glass plate 110 with 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 through the glass plate 110.

<< Boarding Device and Pasting Method for Substrate of the Present Invention >>
Next, the board | substrate bonding apparatus and the bonding method of embodiment of this invention are demonstrated.

  The present invention is a substrate bonding method and a bonding apparatus for bonding a second substrate to a first substrate via an adhesive layer. The first substrate and the second substrate are preferably the above-described substrates.

  Moreover, the board | substrate bonding apparatus and the bonding method of this invention are applicable to the state which the 1st board | substrate inclined from the perpendicular direction or the perpendicular direction. The shape of the second substrate is not limited. The shape of the second substrate can be a circle, a rectangle, a square, or the like. In the case of a rectangle, the aspect ratio is not particularly limited, and may be a portrait or landscape.

  About the bonding apparatus and bonding method of embodiment, the liquid crystal panel 106 which is a 2nd board | substrate is bonded to the window glass 102 which is a 1st board | substrate through the adhesion layer, and the window glass 102 and a 1st adhesion | attachment. An example of manufacturing the image display device 100 having the layer 114, the glass plate 110, the second adhesive layer 116, and the liquid crystal panel 106 in this order will be described. The window glass 102 shall be arrange | positioned at the perpendicular direction. The screen size of the liquid crystal panel 106 to be bonded is 42 inches as an example. In addition, in embodiment, the bonding method which abbreviate | omitted bonding with the window glass 102 and the glass plate 110 is demonstrated.

[Bonding device 10]
FIG. 3A shows a bonding apparatus 10 for bonding a rectangular liquid crystal panel 106 to a window glass 102 fixed to a window frame (not shown) using the bonding apparatus 10 of the embodiment. It is the front view which made the window glass 102 support so that attachment or detachment was possible, (B) is a side view of (A).

  As shown in FIGS. 3A and 3B, the bonding apparatus 10 includes a pusher 24 </ b> B (FIG. 8A) that is a bending means, a roller 16 that is a pressing means, and a guide portion 18 that is a guide means. It is prepared for. In the bonding apparatus 10 of this embodiment, it is arbitrary composition, the press part 22 provided with the elastic bonding load adjustment mechanism part 20 which provides the bonding load to the roller 16, and the plate shape which adsorb | sucks a 2nd board | substrate. It demonstrates as a form provided with the hanger unit 14 which supports the member 12 and a plate-shaped member.

<Plate-like member 12>
The plate-like member 12 is a member that adsorbs the liquid crystal panel 106. When the plate-like member 12 is provided, since the bending means and the pressing means are not connected or pressed to the liquid crystal panel 106, the liquid crystal panel can be prevented from being stained or damaged. It is preferable that the plate-like member 12 has flexibility. The plate-like member 12 is preferably larger than the area of the liquid crystal panel 106. Thereby, entrainment of a foam can be prevented to the pasting termination part.

  In the present embodiment, the plate-like member 12 is a flexible plate-like member and will be described using an example having a larger area than the liquid crystal panel 106. Further, an example in which the plate-like member 12 holds the liquid crystal panel 106 by suction will be described below.

  FIG. 4 is a longitudinal sectional view of the plate-like member 12.

  As shown in FIG. 4, the plate member 12 includes a rectangular flexible plate 26, a frame-shaped closed-cell sponge member 28 bonded to the peripheral surface portion of the flexible plate 26, and the inner peripheral side of the sponge member 28. The rectangular porous sheet 30 is bonded to the flexible plate 26.

  A frame-shaped gap 32 is formed between the frame-shaped sponge member 28 and the porous sheet 30. The sponge member 28 and the porous sheet 30 are attached to the flexible plate 26 using an adhesive (or double-sided adhesive tape) 34.

  Inside the flexible plate 26, there is provided a suction path 35 having one end communicating with the gap 32 and the other end communicating with a plurality of suction ports 36 (see FIG. 3A). A plurality of suction ports 36 are provided at both ends of the flexible plate 26 (portions that do not adsorb the liquid crystal panel 106). These suction ports 36 are connected to the vacuum pump 40 via suction hoses 38.

  Returning to FIG. 4, when the liquid crystal panel 106 is sucked and held by the plate-like member 12, the peripheral surface of the liquid crystal panel 106 is placed on the sponge member 28, and the upper surface of the frame-like gap 32 is blocked by the liquid crystal panel 106. To do. When the vacuum pump 40 is driven in this state, air is sucked through the suction hose 38, the suction port 36, the suction path 35, and the gap 32. As a result, an adsorption force is generated on the adsorption surface 30A of the porous sheet 30, so that the liquid crystal panel 106 is adsorbed and held on the adsorption surface 30A.

  The thickness of the porous sheet 30 is preferably 2 mm or less, and more preferably 1 mm or less (for example, 0.5 mm). The sponge member 28 is preferably thicker than the porous sheet 30 and is elastically deformed to the thickness of the porous sheet 30 when the liquid crystal panel 106 is sucked and held. As a result, the gap 32 can be surely closed, so that the suction force for holding the liquid crystal panel 106 by suction increases.

  The porous sheet 30 is preferably conductive. Generation of static electricity can be suppressed when a release sheet attached to the surface of the adhesive layer described later is peeled off or when the flexible plate member 12 and the liquid crystal panel 106 are removed after bonding.

  Moreover, the flexible plate 26 needs moderate flexibility, and for example, a vinyl chloride resin plate having a thickness of 2 mm or more and 3 mm or less is preferable. In this case, a single vinyl chloride resin plate may be used, but as shown in FIG. 4, a vinyl chloride resin plate 26A having a thickness of 2 mm and a vinyl chloride resin plate 26B having a thickness of 0.5 mm are bonded with an adhesive (or on both sides). An adhesive tape) 42 can also be used. It is preferable to bond a conductive sheet (not shown) to the surface opposite to the surface where the porous sheet 30 of the flexible plate 26 is bonded. Thereby, generation | occurrence | production of static electricity can be suppressed at the time of bonding etc.

<Hanger unit 14>
The hanger unit 14 shown in FIG. 3 is a jig that suspends and supports the plate-like member 12 that holds the liquid crystal panel 106 by suction. By providing the hanger unit 14, the bonding can be completed without the second substrate being displaced from the position determined before the bonding. The hanger unit 14 has the vertical position, inclination, and horizontal direction of the plate-like member 12 with the liquid crystal panel 106 facing the bonding position of the window glass 102 through a predetermined bonding gap. It is preferable that it is a jig which can adjust a position. In the present embodiment, the hanger unit 14 will be described as a jig that adjusts the position in the horizontal direction and the position and inclination in the vertical direction.

  As shown in FIG. 3A, the hanger unit 14 includes a horizontal position adjusting unit 44 that adjusts the horizontal position of the plate-like member 12 along the surface of the window glass 102 installed in the vertical direction, and the window glass. A vertical position adjusting unit 46 that adjusts the vertical position and inclination of the plate-like member 12 is provided along the surface 102. In addition, the hanger unit 14 includes a pair of hand suction boards 48. By attaching these hand suction boards 48 to the window glass 102, the hanger unit 14 is detachably supported by the window glass 102. In addition, although it replaces with the hand suction board 48, the suction board connected with the vacuum pump (not shown) can also be used, but in the case of on-site bonding, the hand suction board 48 with good handling property is preferable. As the hand suction board 48, one having an allowable load of 25 kgf / 1 manufactured by Shinwa Measurement Co., Ltd. can be suitably used. Further, the suction position of the hand suction board 48 is not limited to the window glass 102 and may be sucked to a wall (support) of a building that supports the window glass 102.

(Horizontal position adjustment unit 44)
The horizontal position adjusting unit 44 is configured by supporting two linear sliders 44B and 44B on a rail-like member 44A so as to be slidable along the longitudinal direction of the rail-like member 44A. A hand suction board 48 is provided on each of the two linear sliders 44B and 44B.

(Vertical direction position adjustment unit 46)
The vertical position adjustment unit 46 includes a pair of turnbuckles 50 and 50. The pair of turnbuckles 50, 50 are suspended from the rail-shaped member 44A by attaching their upper ends to both ends of the rail-shaped member 44A.

(Operation of hanger unit 14)
When the hanger unit 14 is used, first, the two hand suction boards 48 are attracted to the surface of the window glass 102 so that the longitudinal direction of the rail-shaped member 44A is oriented in the horizontal direction. The suction position of the hand suction board 48 is a rough position corresponding to the desired bonding position of the liquid crystal panel 106. Then, the ring 12A attached to the upper end of the plate-like member 12 is detachably engaged with the hook 50A provided at the lower end of the pair of turnbuckles 50, 50. Accordingly, the plate-like member 12 that holds the liquid crystal panel 106 by suction is supported by being hung on the hanger unit 14. Then, an operation of moving the rail-shaped member 44A in the horizontal direction and an operation of individually adjusting the vertical lengths of the pair of turnbuckles 50 and 50 are performed. Thereby, the bonding position of the liquid crystal panel 106 with respect to the window glass 102 can be easily adjusted to a desired position. When the turnbuckles 50 and 50 are extended by the same length, the position of the liquid crystal panel 106 is lowered in the vertical direction, and when the turnbuckles 50 and 50 are shortened by the same length, the position is raised in the vertical direction. The inclination can be adjusted by extending one of the turnbuckles 50 and 50 and contracting the other.

  The configurations of the horizontal position adjusting unit 44 and the vertical position adjusting unit 46 are not limited to the above example, and the horizontal position and vertical position and inclination of the liquid crystal panel 106 can be adjusted. Any function can be applied.

<Pressing means: Roller 16>
The bonding apparatus 10 of this embodiment is provided with the roller 16 as a press means in bonding with a 1st board | substrate and a 2nd board | substrate. The roller 16 has an axial length equal to or greater than the width of the liquid crystal panel 106. Thereby, a load can be uniformly applied to the second substrate. The roller 16 is continuously moved from the bonding start end that is the upper end of the liquid crystal panel 106 toward the bonding end end that is the lower end of the liquid crystal panel 106. Moreover, the bonding apparatus 10 of this embodiment has a guide means, The reaction force from the window glass 102 produced at the time of bonding is transmitted to the roller 16 through the guide means.

  FIG. 5 is an explanation showing a bonding load distribution P when the liquid crystal panel 106 is bonded to the window glass 102 by the roller 16. The code | symbol 52 of FIG. 5 is an adhesion layer. FIG. 5 shows the case where the adhesive layer 52 is provided on the window glass 102, but the same applies when the adhesive layer 52 is provided on the liquid crystal panel 106. Further, in FIG. 5, the illustration of the plate-like member 12 is omitted in order to avoid the complexity of the drawing.

  In order to bond so that air bubbles do not enter the adhesive interface between the window glass 102 and the liquid crystal panel 106, the width W of the bonding load distribution P is reduced as much as possible, and the distribution center portion Q is bonded. It is preferable to make the combined load as large as possible. In other words, it is preferable to apply a bonding load to the liquid crystal panel 106 in a state where the roller 16 is in Hertz contact (line contact).

  For this reason, it is preferable that the roller 16 has a harder roller surface and a smaller roller diameter because it is easy to add a bonding load in a line contact state. However, in order to suppress the entrainment of bubbles, the roller 16 is formed of the window glass 102. It is preferable to have flexibility so as to follow the warp. As the roller 16 that satisfies this condition, for example, a stainless or aluminum cylindrical tube having an outer diameter of 10 to 30 mm (for example, 20 mm) and a thickness of 0.3 to 3.0 mm (for example, 1 mm) is preferably used. Can do. In this case, an elastic member such as rubber may be coated on the roller surface in a thin film shape.

  Further, the adhesive layer 52 is thicker, the elastic modulus of the adhesive layer 52 is larger, and the adhesive layer 52 is more easily elastically deformed by the bonding load. Air bubbles are difficult to enter. For this reason, the thickness of the adhesion layer 52 is set to about 0.1 to 2.0 mm, preferably about 0.2 to 0.8 mm. When the thickness of the adhesive layer 52 is 0.1 mm or more, the adhesive layer effectively buffers an impact caused by an external force, and the image display panel can be protected. In addition, even if foreign matter that does not exceed the thickness of the adhesive layer 52 is mixed between the window glass 102 and the liquid crystal panel 106, the thickness of the adhesive layer 52 does not change greatly, and the light transmission performance is affected. Few. When the thickness of the adhesive layer 52 is 2.0 mm or less, the thickness of the image display panel is not unnecessarily increased.

The shear modulus of the adhesive layer 52 is preferably in the range of 10 ² to 10 ⁵ Pa, and more preferably in the range of 10 ³ to 10 ⁴ Pa.

<Guide means: guide section 18>
The bonding apparatus 10 of this embodiment has the guide part 18 which is a guide means. The guide means is detachably attached to the first substrate, guides the movement of the pressing means, and applies a reaction force from the first substrate when the second substrate is pressed against the first substrate by the pressing means. , And can be transmitted to the roller 16 through the guide portion 18. Thereby, even when the 1st board | substrate is curled or when the 1st board | substrate warp by the bonding load, it can bond, without a bubble entering a bonding surface.

  In the bonding apparatus 10 of this embodiment, the guide part 18 supports the pressing part 22 which has the roller 16 and the bonding load adjustment mechanism part 20 grade | etc., On the window glass 102 so that attachment or detachment is possible, as shown in FIG. It is a member which guides the movement of.

  The guide unit 18 includes a rail frame 54 and four hand suction boards 48 that detachably hold the rail frame 54 on the window glass 102. The rail frame 54 includes a pair of rails 56, 56 arranged in parallel in the vertical direction at intervals wider than the width of the plate-like member 12, and two connecting members 58, 58 that connect the rails 56, 56. The Note that the number of hand suction boards 48 may be five or more.

  As shown in FIG. 6, when a pressing force is applied from the roller 16 to the window glass 102 in the direction indicated by the arrow F, a reaction force is generated from the window glass 102 in the direction indicated by the arrow G. It is transmitted to the first substrate through the guide portion 18. Here, the arrow F which shows the force line of bonding load, and the arrow G which shows the force line of bonding reaction force are directions orthogonal to the surface of the window glass 102, and are opposing directions. With this mechanism, even when the first substrate is warped or when the first substrate is warped by a pressing force, the second substrate can be bonded to the first substrate without bubbles.

<Pressing part 22>
The bonding apparatus 10 of this embodiment is provided with the press part 22, as shown to FIG. 6, FIG. By providing the pressing part 22, a uniform bonding load can be applied to the second substrate. As a result, bubbles can be prevented from entering the bonding surface.

  In the present embodiment, the pressing portion 22 is provided at both ends of a roller operating bar 60 and a roller operating bar 60 of square material arranged parallel to the axial direction of the roller 16, and is slidable on a pair of opposing rails 56 and 56. It is comprised by the bonding part 62 and the bonding load adjustment mechanism part 20 provided along the axial direction of the roller operation bar 60. The engaging part 62 includes a wheel 64 and a wheel unit 66 in which the wheel shafts are arranged in the orthogonal direction.

  The wheel 64 shown in FIG. 6 is rotatably supported by an L-shaped bracket 68 extending laterally from the end of the roller operation bar 60 via a shaft 64A, and is in rolling contact with the inner wall surface 56A of the rail 56. Is done. The wheel unit 66 includes a pair of wheels 66A as shown in FIG. These wheels 66A are rotatably supported by the bracket 68 via a shaft 66B, and are in rolling contact with the roller guide surface 56B of the rail 56. The inner wall surface 56A of the rail 56 and the roller guide surface 56B are surfaces orthogonal to each other, and the wheels 64 are in rolling contact with the inner wall surface 56A, and the pair of wheels 66A are in contact with the roller guide surface 56B. The pressing part 22 is supported movably along the vertical direction with respect to the guide part 18.

  It is preferable that the wheel unit further includes a disk damper (not shown). Thereby, the rotational speed of the wheel 66A can be controlled, and the pressing portion 22 can be prevented from descending at high speed even when the roller operation bar 60 is released during bonding. As a result, bubbles can be prevented from entering the bonding surface. As the disk damper, for example, FDN-47A-R (L) 163 manufactured by Fuji Latex Co., Ltd. can be used.

  FIG. 6 is an arrow view seen from the C-C ′ line in FIG. 3 (A), and is an explanatory diagram showing a bonding state by the roller 16. FIG. 7 is a side view of an essential part showing a bonding state by the roller 16.

  As shown in FIG. 7, an inclined tapered slope 70 is provided at the upper end (right end in FIG. 7) of the roller guide surface 56B. The roller guide surface 56 </ b> B is provided with a horizontal plane 72 that is continuous with the slope 70 and parallel to the window glass 102. The roller 16 can be smoothly positioned at the bonding start position by rolling the wheel 66A of the engaging portion 62 to the horizontal plane 72 as shown by the solid line in FIG. 7 using the slope 70.

<Bonding load adjustment mechanism 20>
In the bonding apparatus 10 of the present embodiment, as shown in FIG. 6, the bonding load adjusting mechanism unit 20 has five central positions in the axial direction of the roller 16, both end positions, and an intermediate position between the center position and both end positions. Provided. Since the bonding apparatus 10 has the bonding load adjustment mechanism part 20, the load concerning the roller 16 can be adjusted.

  In the present embodiment, the bonding load adjustment mechanism unit 20 includes a pair of sliders 74, a bracket 76, a spring 78, and a pair of backup rollers 80. It is preferable that the bonding load adjusting mechanism 20 can be swung by a rotation support pin or the like. When the roller 16 deforms following the warp of the window glass 102, the pair of backup rollers 80 can be brought into close contact with the roller 16, and the warp of the window glass 102 can be accurately followed.

  The slider 74 is provided so as to be able to project and retract in a direction perpendicular to the surface of the window glass 102 from the surface facing the window glass 102 of the roller operation bar 60, and the bracket 76 is fixed to the tips of the two sliders 74. . The spring 78 is interposed between the roller operation bar 60 and the bracket 76, and the bracket 76 is biased toward the window glass 102 by the biasing force of the spring 78.

  The pair of backup rollers 80 is rotatably supported by the bracket 76 via a shaft 80A, and is in rolling contact with the roller 16 rotated in the same direction to support the rotation of the roller 16.

  As shown in FIG. 6, the roller 16 is prevented from falling off the roller operation bar 60 by inserting a pin 82 projecting from the bracket 68 into the roller 16. The pair of backup rollers 80 are preferably crown-shaped. If a crown-shaped backup roller is used, the roller 16 can follow the warp of the window glass 102 with higher accuracy. The ends of the pair of backup rollers 80 positioned at both ends preferably protrude beyond the ends of the liquid crystal panel 106. Thereby, sufficient bonding pressure can be applied to the end of the liquid crystal panel 106.

  According to the bonding load adjusting mechanism 20, as shown by the two-dot chain line in FIG. 7, when the pressing portion 22 is positioned at the slope 70 portion of the roller operation bar 60, the roller 16 is in a state where the spring 78 is extended. It abuts on the plate member 12. Thereafter, when the pressing portion 22 moves from the slope 70 to the horizontal plane 72 as shown by a solid line in FIG. Power is generated. This urging force is a bonding load applied to the roller 16.

<Curving means>
Since the bonding apparatus 10 of the present embodiment includes the pusher 24B (FIG. 8A) as a bending means, the liquid crystal panel 106 and the plate-like member 12 retract from the window glass 102 from the upper end portion to the lower end portion. The liquid crystal panel 106 is curved convexly with respect to the window glass 102. Thereby, the location which the 2nd board | substrate does not press and the 1st board | substrate do not contact, As a result, the entrainment of the bubble to the bonding surface can be prevented.

(Form of the curved portion 24)
As shown in FIGS. 8A and 8B, two types of bending portions 24 are shown.

  The bending portion 24 is a lower end portion of the plate-like member 12 and is detachably provided at at least two places in the width direction of the plate-like member 12. In FIG. 3A, the bending portions 24 are provided at four locations.

  As shown in FIG. 8A, the pusher 24B used in the present embodiment is a push-up method in which the lower end portion of the plate-like member 12 is pushed up in the direction of retreating from the window glass 102 by the urging force of the spring 24D. In the pusher 24B, a plate 24A is detachably fixed to a lower end portion of the plate-like member 12, and a pusher 24B is removably attached to an opening (not shown) of the plate 24A. An elastic body 24C that comes into contact with the window glass 102 is attached to the tip of the pusher 24B. The spring 24D is interposed between the plate 24A and the elastic body 24C, and the pusher 24B is inserted into the spring 24D. .

  FIG. 8B shows another form of the bending means. The bending means in FIG. 8B is a pulling method in which the lower end portion of the plate-like member 12 is pulled by the weight of the weight member 24E in the direction in which it is retracted from the window glass 102. This bending means is configured by suspending a weight member 24E from a plate 24A via a pulling rope 24F. Further, in order to apply the weight of the weight member 24E to the plate 24A in the horizontal direction, the tow rope 24F is wound around the pulley 24G.

  The fixing form of the plate 24A with respect to the plate-like member 12 is not particularly limited. For example, it can be detachably attached to the plate member 12 by adopting a clamp method, a hand suction disk method, or the like.

(Adhesive layer 52)
The adhesive layer 52 shown in FIG. 5 may be provided on either the window glass 102 or the liquid crystal panel 106. From the viewpoint of easy adjustment of the bonding position, it is preferable to provide the adhesive layer 52 on the liquid crystal panel 106. As the adhesive layer 52, the above-mentioned adhesive layer is used.

  The plate-like member 12, the hanger unit 14, the roller 16, the guide portion 18, the pressing portion 22 including the bonding load adjusting mechanism portion 20, and the bending portion 24 are each configured as an independent unit, and each unit is The maximum weight is 15 kg or less. Thereby, each unit can be handled easily. Therefore, when bonding on-site, each unit can be carried to the site and the bonding apparatus 10 can be easily assembled on-site.

[Bonding method]
In embodiment of the bonding method of this invention, when bonding the liquid crystal panel 106 to the window glass 102 installed in the building, the bonding apparatus 10 was assembled on the surface of the window glass 102, and it assembled. A method for performing bonding using the apparatus 10 will be described.

  The adhesive layer 52 is assumed to be provided on one surface of the liquid crystal panel 106, and the liquid crystal panel 106 is carried into the bonding site in a form in which a release sheet (not shown) is attached to the surface of the adhesive layer 52. Shall be.

<Assembly procedure of bonding apparatus 10>
First, the assembly procedure of the bonding apparatus 10 is demonstrated according to FIGS.

  As shown in the front view of FIG. 9 (A) and the side view of FIG. 9 (B), the rail-like member 44A is placed almost horizontally on the hand-sucking plate 48 of the hanger unit 14 on the vertically installed window glass 102. Adsorb to.

(Holding process)
Next, as shown in FIG. 10, the liquid crystal panel 106 is sucked and held on the flexible plate-like member 12 in a flat state on the floor surface of the building to be bonded at the site. In the present embodiment, since the adhesive layer 52 is provided on one surface of the liquid crystal panel 106, the surface of the liquid crystal panel 106 on which the adhesive layer 52 is not provided is adsorbed to the plate member 12. Thereafter, a pusher 24 </ b> B (FIG. 8A) is attached to the plate-like member 12, and the release sheet is peeled off from the liquid crystal panel 106.

  FIG. 10 (A) is a front view of the plate-like member 12 on which the liquid crystal panel 106 is held by suction, and FIG. 10 (B) is a side view of FIG. 10 (A). As shown in FIG. 10B, the plate member 12 may be provided with a sponge member 84 and a dummy sheet 86.

  As shown in FIGS. 10B and 11A, when a band-like sponge member 84 having a thickness larger than the thickness of the liquid crystal panel 106 is provided, the adhesive layer 52 and the window glass are pressed before pressing in the bonding process. Contact with 102 can be prevented. As shown in FIG. 11B, the sponge member 84 is compressed to the thickness of the liquid crystal panel 106 by the bonding load by the roller 16 at the time of bonding, so the liquid crystal panel 106 is bonded to the window glass 102 without any problem. Is done.

  The sponge member 84 may be provided so as to surround the liquid crystal panel 106, and may be provided along the upper edge of the liquid crystal panel 106 in which the adhesive layer 52 may come into contact with the window glass 102.

  As shown in FIG. 10 (B) and FIG. 11, when the dummy sheet 86 having the same thickness as the liquid crystal panel 106 is provided, the difference in rigidity of the plate-like member 12 is measured before and after the bonding start position and the bonding end position. Since it can eliminate, it can carry out smoothly at the time of pasting start. As shown in FIG. 7, when the roller 16 is mounted at the bonding start position indicated by the solid line using the slope 70 of the rail 56, the flexible plate-like member 12 on the upstream side of the bonding start position Also, a bonding load from the flexible roller 16 is added. It is preferable to interpose the dummy sheet 86 because the difference in rigidity of the plate-like member 12 can be eliminated before and after the bonding start position, and the generation of bubbles can be reduced.

  In FIG. 10B, the dummy sheet 86 is provided on the upstream side of the bonding start position and on the downstream side of the bonding end position. However, only one of the upstream side and the downstream side may be provided.

(Curving process)
The ring 12A of the plate-like member 12 to which the pusher 24B (FIG. 8A) is attached is detachably engaged with the hooks 50A of the pair of turnbuckles 50 of the hanger unit 14 so that the plate-like member 12 is attached to the window glass 102. Support hanging. As a result, the plate-like member 12 is bent and the liquid crystal panel 106 is bent in a convex shape with respect to the window glass 102.

  When the plate member 12 is suspended from the window glass 102, the window glass 102 may be suspended from the adhesive layer 52 provided on one surface of the liquid crystal panel 106. Thereby, when adjusting the bonding position of the liquid crystal panel 106 with respect to the window glass 102 mentioned later, it can prevent that the adhesion layer 52 contacts the window glass 102. FIG. In this case, at the time of pasting, the lower end of the turnbuckle 50 is moved so as to approach the window glass 102 to bend the plate-like member 12, and then the liquid crystal panel 106 is bent convexly with respect to the window glass 102. I do.

(Position adjustment process)
After the plate-like member 12 is suspended from the window glass 102, the hanger unit 14 moves the plate-like member 12 in the vertical direction indicated by the arrow D and the horizontal direction indicated by the arrow E so that the desired attachment of the window glass 102 is achieved. The liquid crystal panel 106 is adjusted to the alignment position.

  Next, as shown in FIGS. 13A and 13B, the guide portion 18 is attached to the window glass 102 so as to surround the plate-like member 12 supported by suspension. That is, the four hand suction boards 48 provided on the rail frame 54 of the guide part 18 are attracted to the window glass 102. Thereby, the guide part 18 is supported by the window glass 102.

  Next, as shown in FIGS. 14A and 14B, the pressing portion 22 is attached to the rail 56 from the slope 70 portion of the rail 56. Thereby, the bonding apparatus 10 is assembled and the preparation for bonding the liquid crystal panel 106 to the window glass 102 is completed.

(Bonding process)
Next, a procedure for bonding the window glass 102 and the liquid crystal panel 106 will be described with reference to FIG. In FIG. 15, illustration of the guide portion 18 is omitted to avoid complexity of the drawing.

  FIGS. 15A to 15C illustrate in detail a procedure for mounting the roller 16 and the pressing portion 22 on the rail 56 of the guide portion 18. As shown in FIG. 15A, the roller 16 and the pressing portion 22 are mounted from above the rail 56 to the upper end of the rail 56 (position indicated by a two-dot chain line in FIG. 7) as shown in FIG.

  In this state, the roller operation bar 60 is gripped, and the roller operation bar 60 is pushed down to start bonding with the roller 16.

  In the movement of the roller 16 from the position shown in FIG. 15B to the position shown in FIG. 15C (the position shown by the solid line in FIG. 7), which is a substantial bonding start position, the above-described dummy sheet 86 acts. Thus, the roller 16 is smoothly moved to the substantial bonding start position without being affected by the difference in rigidity of the plate-like member 12.

  Next, as shown in FIGS. 15C to 15E, the roller 16 is pressed from the back surface of the plate-like member 12 toward the window glass 102 via the roller operation bar 60 to apply a bonding load. Thereby, the upper end (bonding start end) of the liquid crystal panel 106 is bonded to the window glass 102. Then, the roller 16 is moved downward from the upper end to the lower end of the plate-like member 12 using the guide portion 18 as a guide. Accordingly, the curvature of the plate-like member 12 portion existing in the moving direction of the roller 16 is corrected flat against the urging force of the spring 24D, so that the bonding surface of the liquid crystal panel 106 is changed from the upper end to the lower end. It is sequentially pasted to the window glass 102. Due to the action of the spring 24D and the roller 16, the bonding surface of the liquid crystal panel 106 is bonded to the window glass 102 without involving bubbles.

  As shown in FIG. 15 (E), the pressing portion 22 is moved to a position beyond the sponge member 84 disposed at the lower position of the liquid crystal panel 106, and this is the bonding end position. At this time, the suction holding of the liquid crystal panel 106 by the plate-like member 12 is released.

  In addition, although the said bonding operation | movement is the bonding operation | movement which moves the roller 16 once from the bonding start position to the bonding end position, the roller 16 is further moved up from the bonding end position to the bonding start position, Bonding may be carried out by one round of up and down bonding operation.

  The bonding operation of the liquid crystal panel 106 to the window glass 102 is completed by the above procedure.

  After the pasting operation is finished, the pasting device 10 is removed from the window glass 102.

  In the removal operation, first, the pressing portion 22 is removed from the upper end of the rail 56. Next, the guide portion 18 is removed from the window glass 102, and the plate-like member 12 is removed from the hanger unit 14. Finally, the hanger unit 14 is removed from the window glass 102. Thereby, the image display apparatus 100 in which the liquid crystal panel 106 is bonded to the window glass 102 can be assembled.

[Features of the embodiment]
According to the bonding method of the embodiment, in the bonding process, the roller 16 is guided in its vertical movement by the rail 56 of the guide portion 18 that is detachably attached to the window glass 102 as shown in FIG. And when the guide part 18 presses the bonding surface of the liquid crystal panel 106 on the surface on the bonding surface side of the window glass 102 by the roller 16, the bonding reaction force from the window glass 102 transmitted to the roller 16 is applied. Then, it is transmitted to the surface on the bonding surface side of the window glass 102 through the hand suction board 48.

  Thereby, the window glass 102 receives the pressing force (bonding load) from the roller 16 and the bonding reaction force of the window glass 102, but the force line F of the pressing force and the force line G of the bonding reaction force are opposite to each other. Direction, and the force is equal. For this reason, even if the non-bonding surface is not supported by the support member or the like, the window glass 102 is firmly supported by the pressing force and the bonding reaction force that are closed between the window glass 102 and the bonding apparatus 10. Is done.

  Therefore, even if the liquid crystal panel 106 is bonded only from the bonding surface side of the window glass 102, the warp of the window glass 102 due to the pressing force of the roller 16 can be suppressed. Therefore, according to the embodiment, the liquid crystal panel 106 can be stably bonded only from the bonding surface side of the window glass 102.

  Moreover, since the roller 16 provided with the pressing part 22 and the roller operation bar 60 and the guide part 18 are separable separate bodies, the weight is lighter than that in which the roller 16 and the guide part 18 cannot be separated. Thereby, the attachment and detachment work of the guide part 18 to the window glass 102 and the attachment and detachment work of the roller 16 to the guide part 18 become easy.

  In the embodiment described above, the substrate bonding apparatus and the bonding method of the present invention have been described with an example in which a liquid crystal panel (second substrate) is bonded to a building window glass (first substrate) in the field. However, the present invention is not limited to this, and the first substrate can be applied to a substrate inclined with respect to the vertical direction or a flat substrate.

  DESCRIPTION OF SYMBOLS 10 ... Pasting apparatus, 12 ... Plate-shaped member, 12A ... Ring, 14 ... Hanger unit, 16 ... Roller, 18 ... Guide part, 20 ... Bonding load adjustment mechanism part, 22 ... Pressing part, 24 ... Bending part, 24A Plate, 24B Pusher, 24C Elastic body, 24D Spring, 24E Weight member, 24F Pulling rope, 24G Pulley, 26 Flexible plate, 28 Sponge member, 30 Porous sheet, 32 ... Gap, 34 ... Adhesive, 35 ... Suction path, 36 ... Suction port, 38 ... Suction hose, 40 ... Vacuum pump, 42 ... Adhesive, 44 ... Horizontal position adjustment unit, 44A ... Rail member, 44B ... Linear Slider, 46 ... Vertical position adjustment unit, 48 ... Hand suction board, 50 ... Turnbuckle, 50A ... Hook, 52 ... Adhesive layer, 54 ... Rail frame, 56 ... Rail, 56A ... Inside Surface, 56B ... Roller guide surface, 58 ... Connecting rod, 60 ... Roller operation bar, 62 ... Engagement part, 64 ... Wheel, 66 ... Wheel unit, 68 ... Bracket, 70 ... Slope, 72 ... Horizontal plane, 74 ... Slider, 76 ... Bracket, 78 ... Spring, 80 ... Backup roller, 82 ... Pin, 84 ... Sponge member, 86 ... Dummy sheet, 100 ... Image display device, 102 ... Window glass, 106 ... Liquid crystal panel

Claims (9)

In the laminating apparatus for laminating the second substrate to the first substrate that is provided to be inclined from the vertical direction or the vertical direction with respect to the floor surface,
A bending means for bending the bonding surface of the second substrate in a convex shape with respect to the first substrate;
Pressing means for moving the second substrate from one end to the other end while pressing the second substrate toward the first substrate and correcting the second substrate bent by the bending means to be flat; ,
The detachable attachment to the first substrate guides the movement of the pressing means, and the pressing means presses the bonding surface of the second substrate against the first substrate. Guide means for transmitting a reaction force from one substrate to the first substrate;
The board | substrate bonding apparatus characterized by the above-mentioned.   The board | substrate bonding apparatus of Claim 1 which is a separate body which can separate the said press means and the said guide means.   The substrate bonding apparatus according to claim 1, wherein the bending unit bends the second substrate by an urging force.   The said 1st board | substrate is the window glass installed in the building, The said 2nd board | substrate is an image display panel, The bonding apparatus of the board | substrate of any one of Claims 1-3. In the bonding method of bonding the second substrate to the first substrate that is inclined from the vertical direction or the vertical direction with respect to the floor surface via the adhesive layer,
A bending step of bending the bonding surface of the second substrate in a convex shape with respect to the first substrate;
One end of the second substrate is pressed toward the first substrate by a pressing unit, and the pressing unit is moved from the one end toward the other end opposite to the one end, thereby existing in the moving direction. A bonding step of sequentially bonding to the first substrate from one end to the other end of the bonding surface of the second substrate while correcting the curvature of the second substrate flatly,
In the bonding step, movement of the pressing means is guided by guide means that is detachably attached to the first substrate,
When the guide means presses the bonding surface of the second substrate against the first substrate by the pressing means, the guide means transmits the bonding reaction force from the first substrate transmitted to the pressing means. A method for bonding substrates, wherein the substrate is transmitted to a first substrate.   The substrate pasting according to claim 5, wherein, in the bonding step, after the guide unit is attached to the first substrate, the pressing unit separated from the guide unit is guided and moved by the guide unit. How to do it.   The substrate bonding method according to claim 5 or 6, wherein, in the bending step, the second substrate is bent by an urging force.   The substrate bonding method according to claim 5, wherein the first substrate is a window glass installed in a building, and the second substrate is an image display panel.   An image display device manufactured by the substrate bonding method according to claim 5.

Images