KR102196855B1 - Method and device for manufacturing plate-shaped laminated article - Google Patents

Abstract

The present invention provides a method and apparatus for enabling the adhesive to spread widely to the vicinity of the edge of the plate-like body, in particular evenly and evenly to the corners of the display area. In a method of manufacturing a plate-shaped laminate by bonding a pair of substantially similar plate-shaped bodies with an adhesive, the first plate-shaped body is formed with a quadrangular shape so as not to protrude from the outer edges of the first plate-shaped body and the second plate-shaped body. A planar application step of applying an adhesive in a square shape by scanning a nozzle having a groove for discharging the image, protruding from the outer edges of the first plate body or the second plate body, In order to avoid this, a supplementary application step of applying an adhesive to a portion that is adjacent to the four corner portions of the first plate body and the second plate body and to which the adhesive is not applied or the portion opposite to the portion in the planar application step, a planar application step And a bonding step of bonding the first plate body and the second plate body that have been subjected to the supplementary application step, and an apparatus for performing the production method.

Description

TECHNICAL FIELD The manufacturing method and apparatus of a plate-shaped laminated body TECHNICAL FIELD [METHOD AND DEVICE FOR MANUFACTURING PLATE-SHAPED LAMINATED ARTICLE}

The present invention relates to a method and apparatus for manufacturing a plate-shaped laminate formed by bonding a pair of plate-shaped bodies with an adhesive, for example, a method for producing a plate-shaped laminate formed by bonding plate-shaped bodies constituting a liquid crystal display, and It relates to the device.

A liquid crystal display is configured by laminating a plate-like body such as a cover glass for surface protection or a touch panel for operation on a liquid crystal module (display module) that is a plate-like substrate made of a substrate on which a liquid crystal layer is formed, a color filter, a backlight, etc. . The lamination of these plate-like bodies is performed by bonding each other using an adhesive sheet or a liquid adhesive, but a method using a liquid adhesive is currently becoming the mainstream. As a method of bonding using this liquid adhesive, various methods have recently been proposed.

Patent Document 1 is a manufacturing method of a flat display device in which a display panel and a protective plate are bonded by applying an adhesive resin, and in that state, the adhesive resin is cured. In a rectangular area to be bonded, a two-way Y A shape line pattern is set, and a plurality of dot-shaped coating patterns are arranged on or near the center line and branch line of the two-way Y-shaped line pattern, and the rectangular center line and its vertical two are divided. It is a method characterized in that it is arranged symmetrically with respect to the line.

Patent Document 2 is a method of manufacturing a polarizing plate in which a transparent substrate and a polarizer are directly bonded to each other through an adhesive, and three or more lines extend from an arbitrary point to a transparent substrate or a polarizer, and an angle formed by two adjacent lines is It is a method comprising a first step of applying the adhesive in a pattern of less than 180° in all, and a second step of bonding the transparent substrate and the modifier through the adhesive.

Patent Document 3 is a method of manufacturing a display device in which a transparent substrate is bonded to a display panel through an adhesive, and a coating step of applying an adhesive to a display panel or a transparent substrate in a predetermined pattern made of a grid or a plurality of dots; After the application step, a bonding step in which the display panel and the transparent substrate are bonded through an adhesive under a reduced pressure atmosphere lower than atmospheric pressure, and a curing step in which the adhesive is cured by irradiating ultraviolet rays after the bonding step are performed. It is a method comprising a.

Patent Document 4 relates to a method for manufacturing a display device having a first panel, a second panel installed opposite the first panel, and a transparent organic material layer disposed between the first panel and the second panel. Installing an organic material in a frame type on the first panel, curing the organic material on the first panel to form an outer organic material layer, and facing the first panel and the second panel in a state in which uncured organic material is filled inside the outer organic material layer And curing the uncured organic material in the opposite state.

Patent Document 5 discloses a step of forming a sealing part with an adhesive around a field of view in a first workpiece, filling an adhesive in the sealing part, and bonding a second work piece to the sealing part and the adhesive filling part. Including the step of forming the sealing portion, the step of forming a bank portion raised from the flat surface of the first work piece on a line surrounding the viewing range, and a portion of the bank portion lacking ( The step of forming a cut-out part (切缺部) that has been cut, forming a first conversion part for changing the flow direction of the adhesive flowing out from the cut-out part, and It is a method of manufacturing a bonded structure including forming a second conversion portion for changing a flow direction, and forming an extension portion extending a flow path of the adhesive of the second conversion portion.

Japanese Unexamined Patent Publication No. 2011-150331 Japanese Unexamined Patent Publication No. 2010-197820 Japanese Patent Application Publication No. 2008-158251 Japanese Unexamined Patent Publication No. 2011-28215 Japanese Unexamined Patent Publication No. 2013-76934

In the field of liquid crystal displays, the bonding of a pair of plate-shaped bodies (panels) is generally performed by applying an adhesive to one of the plate-like bodies, then overlapping the other plate-like bodies, and applying a pressing force. It is carried out by pressing and widening the adhesive. At this time, the adhesive is preferably spread evenly to the edge of the plate-like body. In particular, it is preferable that the display area of the liquid crystal module is uniformly covered with an adhesive having a uniform thickness. However, since the adhesive is liquid, the corners are not strictly right-angled, and the rounded shape remains. As a result, as shown by the dotted line in the right drawing of Fig. 18A, a state in which the corners of the display area are not filled with the adhesive occurs. Then, in the corner portion, since the plate-shaped bodies are supported and not reinforced, they are easily deformed even with a slight force, and a problem of color unevenness or damage occurs due to the deformation (problem 1).

In order to avoid the occurrence of this problem 1, it is conceivable to apply the adhesive in advance with a margin, but since the display area is formed up to the point just before the edge of the plate-shaped body, as shown by the dotted line in the right drawing of FIG. Similarly, when joining, another problem arises that the adhesive spreads at the same time also at places other than the corners and protrudes out of the plate-shaped body B2 (problem 2).

Even in the state of Fig. 18(a), it is possible to allow the liquid to permeate to the corners by capillary phenomenon by allowing a certain amount of time after bonding, but this takes too much time, and due to individual differences in time. Since there is non-uniformity, it is impractical.

Accordingly, an object of the present invention is to provide a method and apparatus for allowing the adhesive to spread widely to the vicinity of the edge of the plate-like body, and in particular, to evenly spread to the corners of the display area.

In the method of manufacturing a plate-like laminate by bonding a pair of plate-like bodies with an adhesive, the inventors of the present invention have obtained the knowledge that the rounded corners of the four corners remain when the adhesive is applied to the plate-like body. , Under the hypothesis that good adhesive application can be obtained by performing supplementary coating on the corners of the four corners, the present invention was created as a result of careful research.

That is, the present invention is constituted by the following technical means.

The present invention relating to a method of manufacturing a plate-shaped laminate is a method for manufacturing a plate-shaped laminate by bonding a pair of substantially similar plate-shaped bodies with an adhesive, wherein the first plate-shaped body Planar application step of applying an adhesive in a rectangular shape by scanning a nozzle having a rectangular ejection groove so as not to protrude from the outer edge of the plate-shaped body and the second plate-shaped body, the first Alternatively, an adhesive is applied to the second plate body in the vicinity of the four corners of the first plate body and the second plate body and in a planar application step so as not to protrude from the outer edges of the first plate body and the second plate body. Including a bonding step of bonding the first plate body and the second plate body subjected to a supplementary application step, a surface-shaped application step, and a supplementary application step, respectively, of applying an adhesive to a portion that is not or is opposite to the portion. It is the manufacturing method of the said plate-shaped laminated body.

In the present invention relating to the manufacturing method of the plate-like laminate, in the supplementary application step, the adhesive is applied by a coating pattern in which a diagonal shape including a top point of a corner portion to be applied is symmetrical. It is preferable that the application pattern of the supplementary application step includes a pattern consisting of dots and/or lines, or the application pattern of the supplementary application step includes an L-shaped pattern.

In the present invention relating to the method for manufacturing the plate-shaped laminate, in the supplementary application step, an adhesive may be applied to the first plate-shaped body.

In the present invention relating to the method of manufacturing the plate-shaped laminate, in the supplementary application step, an adhesive is applied to the second plate-like body, and the planar application step and the supplemental application step are performed in parallel. It may be a feature.

In the present invention relating to the manufacturing method of the plate-shaped laminate, in the planar application step, a nozzle having a discharge groove having a length capable of applying a required amount of adhesive in the width direction of the first plate-shaped body at one time is provided, It may be characterized in that the adhesive is applied by scanning once in a direction orthogonal to the width direction of the sieve.

In the present invention relating to the method for manufacturing the plate-like laminate, the plate-like laminate formed by bonding the first plate-like body and the second plate-like body may be a component of a liquid crystal display.

The present invention related to the apparatus for manufacturing a plate-like laminate is an apparatus for manufacturing a plate-like laminate by bonding a pair of substantially similar plate-like bodies with an adhesive, wherein an adhesive is applied to the plate-like body in a square shape. A shaving cloth device to be applied, a corner applying device for applying an adhesive to the vicinity of the four corner portions of the plate body, a bonding device for bonding the first plate body and the second plate body to which the adhesive is applied, and a shaving cloth device , A conveying device and a control device for contacting the corner coating device and the bonding device, and the control device comprises: a) a shaving cloth device, the outer edge of the first plate body and the second plate body A means for applying an adhesive in a quadrangular shape by scanning a nozzle having a rectangular ejection groove on the first plate body so that it does not protrude from, b) to the corner applicator, to the first or second plate body. , In order not to protrude from the outer edges of the first plate body and the second plate body, the portion in the vicinity of the four corner portions of the first plate body and the second plate body and to which the adhesive is not applied by the razor cloth device or the above It is an apparatus for manufacturing a plate-like laminate comprising means for applying an adhesive to each of the portions facing the portion, c) bonding means for bonding a pair of plate-shaped bodies to which the adhesive has been applied by a corner portion application device to the bonding device. .

In the present invention related to the apparatus for manufacturing the plate-shaped laminate, the shaving cloth device moves relative to the surface-shaped discharge device, the table on which the object to be coated is mounted, and the surface type discharge device and the object to be coated on the table. It may be characterized in that it is provided with an XYZ direction moving mechanism to be made, and the corner part coating device is configured by mounting a replenishment discharge device on an XYZ direction moving mechanism of the shaving cloth device.

In the present invention relating to the device for manufacturing the plate-shaped laminate, the planar discharge device includes a nozzle having a discharge groove having a length capable of applying a required amount of adhesive in the width direction of the first plate-shaped body at a time. It can be done.

In the present invention relating to the apparatus for manufacturing the plate-shaped laminate, further comprising a reversing device for vertically inverting the plate-shaped body, and further, a shaving cloth device, a corner part coating device, a bonding device, a reversing device, and It may be characterized in that the conveying device is mounted on the same mount.

In the present invention relating to the apparatus for manufacturing a plate-like laminate, the plate-like laminate formed by bonding the first plate-like body and the second plate-like body may be a component of a liquid crystal display.

According to the present invention, since the adhesive can be applied to the vicinity of the corner portion of the plate-shaped laminate, it is possible to firmly fix the plate-shaped bodies to each other, thereby preventing deformation or damage. In addition, it is possible to eliminate defects in protruding of the adhesive.

Further, since an adhesive having an outer edge of a desired distance from the outer edge of the plate body can be applied, the pressing force required for bonding can be minimized.

According to the present invention having a configuration in which a plurality of types of coatings are processed in parallel, the working time for coating or bonding can be shortened.

1 is an explanatory view illustrating a first aspect of an adhesive application method according to an embodiment of the present invention. Here, (a) represents a shaving cloth step, (b) a supplementary application step, and (c) represents a bonding step.
It is an explanatory drawing explaining the shape of an adhesive agent after bonding. Here, (a) is a top view, (b) is a side view.
3 is an explanatory diagram for explaining a second aspect of an adhesive application method according to an embodiment of the present invention. Here, (a) denotes a shaving cloth step, (b1) a supplementary application step, (b2) an inversion step, and (c) a bonding step.
4 is an explanatory view for explaining a third aspect of the adhesive application method according to the embodiment of the present invention. Here, (a) is a supplementary application step, (b1) is a shaving cloth step, (b2) is an inversion step, and (c) is a bonding step.
Fig. 5 is a schematic top view explaining a change in replenishment coating. Here, (a) is a case of applying multiple points, (b) is a case of applying multiple points of different sizes, (c) is a case of applying a straight line in an L shape, and (d) is a combination of liner and point coating This is the case.
6 is a cross-sectional view of a film-shaped coating nozzle of the planar discharge device according to the first embodiment. (a) is a front cross-sectional view, and (b) is a cross-sectional view taken along the line A-A in (a).
7 is a schematic cross-sectional view of a replenishment discharge device according to the first embodiment.
8 is an explanatory diagram of a group of devices for implementing the adhesive application method according to Example 1. FIG. Here, (a) shows a shaving cloth device, (b) shows a corner part application device, and (c) shows a bonding device.
9 is a schematic cross-sectional view of a bonding device according to Example 1. FIG.
10 is a schematic top view of a conveying device according to Example 1. FIG. Here, (a) is an example of robot conveyance, and (b) is an example of roller conveyance.
11 is an explanatory diagram of an apparatus group for implementing an adhesive application method according to Example 2. FIG. Here, (a) shows a surface and corner part coating device, and (b) shows a bonding device.
12 is a schematic top view of a conveying device according to the second embodiment. Here, (a) is an example of robot conveyance, and (b) is an example of roller conveyance.
13 is an explanatory diagram of a group of devices for implementing an adhesive application method according to Example 3. FIG. Here, (a) shows a shaving cloth device, (b1) a corner part application device, (b2) a reversing device, and (c) a bonding device.
14 is a schematic top view of a conveying device according to Example 3. FIG. Here, (a) is an example of robot conveyance, and (b) is an example of roller conveyance.
15 is an explanatory diagram of an apparatus group for implementing an adhesive application method according to Example 4. FIG. Here, (a) denotes a corner part application device, (b1) a razor cloth device, (b2) a reversing device, and (c) a bonding device.
16 is a schematic top view of a conveying device according to the fourth embodiment. Here, (a) is an example of robot conveyance, and (b) is an example of roller conveyance.
17 is a schematic top view of a coating and bonding device according to Example 5. FIG.
18 is an explanatory diagram illustrating a conventional technique. Here, (a) shows the case where the adhesive is not filled in the corner of the display area, and (b) shows the case where the adhesive protrudes outward of the plate body.

Hereinafter, an embodiment example for carrying out the present invention will be described. All of the first to third aspects illustrate a bonding method of a liquid crystal module and a cover glass (glass panel). Hereinafter, for convenience, the first plate body is referred to as a plate body A1 and the second plate body is described as a plate body B2, but the first plate body is set as the plate body B2, and the second plate body May be a plate-like body (A1).

<Adhesive application method>

(1) the first aspect

1 is an explanatory diagram illustrating a first aspect of an adhesive application method according to an embodiment of the present invention. In the first aspect, both planar coating and supplemental coating are performed on any one of a pair of plate-shaped bodies. Each of the pair of plate bodies is a rectangular flat plate, and one area is smaller than the other, and is substantially similar.

First, as shown in Fig. 1(a), for example, the plate-shaped body A1, which is a liquid crystal module, is moved from one end to the other end in the direction indicated by the symbol "5" by the planar discharge device 7 (one-way Scan), and apply the adhesive 3 in a cotton shape. The planar coating is preferably applied so as to form a rectangle located slightly inward from the outer edge of the four sides of the plate-shaped body on the smaller side so that the pressing force required at the time of bonding can be minimized. At this time, the applied adhesive 3 has a rectangular shape according to the shape of the display area 4, but the four corners do not become completely right-angled, and a rounded shape remains. In other words, the planar application in the present invention refers to applying a square shape having a rounded corner portion. Here, the planar coating is performed on an area that occupies, for example, 80 to 90% or more of any smaller area among the pair of plate bodies. The nozzle of the planar discharge device 7 has a discharge groove 12 having a length capable of applying the necessary amount of adhesive 3 in the width direction of the plate-shaped body A1 at one time. The planar discharge device 7 will be described in detail in an embodiment described later.

Subsequently, as shown in Fig. 1(b), at four points near the corners where the rounded shape of the adhesive 3 applied on the plate-shaped body A1 in a planar shape remains, the replenishment dispensing device 8 is indicated by the symbol " While moving in the direction indicated by 6", the adhesive 3 is replenished on the corners. In the first aspect, the supplementary application of the adhesive 3 is performed by forming one dot in each corner portion (hereinafter referred to as "point application"). At this time, the side surface of the point-shaped adhesive 3 may be attached to the surface-shaped adhesive 3 or may be spaced apart. This is because, usually, at the time of bonding, a pressing force is applied to press the plate bodies to each other, and the adhesive 3 is pressed and bonded together. Preferably, supplementary coating is performed so that the distance between the surface-shaped adhesive and the point-shaped adhesive is equal to or less than half the diameter of the dot formed by the point-shaped application. In addition, the replenishment discharge device 8 will be described in detail in Examples to be described later.

Then, as shown in Fig. 1(c), in a state in which the plate-shaped body B2, which is, for example, a cover glass, is inverted, it is bonded to the plate-shaped body A1 to which the adhesive 3 is applied in a planar shape and a point shape. . And, at the time of bonding, the environment around the plate-shaped body is at low pressure (preferably 500 Pa or less, more preferably 100 Pa or less, more preferably 10 Pa or less by absolute pressure) so that air bubbles are not mixed into the adhesive 3 Low pressure) or in a vacuum state. The bonding device 55 is used for this bonding operation. The bonding device 55 will be described in detail in Examples to be described later. In the above, the plate-shaped body A1 was used as a liquid crystal module and the plate-shaped body B2 was used as a cover glass, but it may be reversed. That is, the plate-shaped body A1 may be used as a cover glass, and the plate-shaped body B2 may be used as a liquid crystal module.

The adhesive 3 after bonding viewed from the side is sandwiched between a pair of plate-shaped bodies A1 and B2, as shown in Fig. 2(b), and the outer edge and display area of the plate-shaped body A1 The outer edge of the adhesive 3 is positioned between the outer edge of (4).

The adhesive 3 after bonding viewed from the top surface, as shown in Fig. 2(a), has four outer edge sides substantially the same distance from the four outer edge sides of the plate-shaped body A1, and It has a shape having four approximately semicircular corners extending from the outer edge side toward the four corners of (A1). In another aspect, a shape having four outer edge sides of substantially the same distance from the four outer edges of the display area 4 and having four approximately semicircular four corners extending outward from the four corners of the display area 4 Becomes. In Fig. 2, the adhesive 3 is indicated by a dotted line, and the display area 4 is indicated by a dashed-dotted line. As can be seen from (a) of Fig. 2, it can be seen that by supplementing the adhesive 3 on the 4 corners, it is possible to reliably fill the corners of the display area 4 after bonding with the adhesive 3 have. This has the same result also by the method of the 2nd mode (FIG. 3) and 3rd mode (FIG. 4) shown below.

(2) the second aspect

3 is an explanatory diagram illustrating a second aspect of the adhesive application method according to the embodiment of the present invention. In a second aspect, in a pair of plate-shaped bodies, planar coating is performed on one plate-like body and supplementary coating is performed on the other plate-like body.

First, as shown in Fig. 3A, for example, the plate-shaped body A1, which is a liquid crystal module, is moved from one end to the other end in the direction indicated by the symbol "5" by the planar discharge device 7, Apply the adhesive (3) in a plane shape. At this time, the applied adhesive 3 has a rectangular shape according to the shape of the display area 4, but the four corners do not become completely right-angled, and a rounded shape remains.

Next, as shown in Fig. 3(b1), while the replenishment discharge device 8 moves in the direction indicated by "6" in the 4 corners of the plate-shaped body B2, which is, for example, a cover glass, the adhesive ( Supplement 3). Also in the second aspect, supplementary application of the adhesive 3 is performed by point application. The position of application is a position corresponding to 4 points in the vicinity of the remaining rounded corners of the adhesive 3 applied to the plate-shaped body A1 in a plane shape when a pair of plate-shaped bodies 1 and 2 are joined. To Here, the position of the adhesive 3 applied to the plate-shaped body B2 may be a position where its side surface is attached to the adhesive 3 applied to the plate-shaped body A1 in a planar shape, or may be spaced apart.

Subsequently, as shown in FIG. 3B2, the plate-shaped body B2, which has been subjected to dot coating on the four corners, is reversed so that the surface applied by the reversing device 56 faces downward. At this time, the plate-shaped body B2 may be inverted after semi-curing treatment so that the shape of the applied adhesive 3 does not collapse. In addition, the reversing device 56 will be described in detail in an embodiment described later.

Next, as shown in FIG. 3C, the plate-shaped body B2 reversed by performing point-like coating by the bonding device 55 is bonded to the plate-shaped body A1 subjected to planar coating. As in the first aspect, at the time of bonding, the environment around the plate-like body may be in a low pressure or vacuum state so that air bubbles are not mixed in the adhesive 3. After bonding, it is possible to reliably fill the corners of the display area 4 with the adhesive 3 as shown in Fig. 2A. In the second aspect in which the planar coating and the dot coating are performed on separate plate-like bodies, the working time can be shortened by processing the steps of applying the adhesive 3 in parallel.

(3) The third aspect

4 is an explanatory diagram illustrating a third aspect of an adhesive application method according to an embodiment of the present invention. In the third aspect, the combination of the type of plate body and the type of application in the second aspect is replaced.

First, as shown in Fig. 4A, for example, in the 4 corners of the plate-shaped body A1 which is a liquid crystal module, the replenishment discharge device 8 moves in the direction indicated by "6", and the adhesive ( Supplement 3). Also in the third aspect, supplementary application of the adhesive 3 is performed by point application. The position of application is a position corresponding to 4 points in the vicinity of the remaining rounded corners of the adhesive 3 applied on the plate body B2 in a plane shape when a pair of plate bodies 1 and 2 are joined. To Here, the position of the adhesive 3 applied to the plate-shaped body B2 may be a position where the side surface is attached to the adhesive 3 applied to the plate-shaped body A1 in a planar shape, or may be a position separated from each other.

Subsequently, as shown in Fig. 4(b1), the top of the plate-shaped body B2, which is, for example, a cover glass, is moved from one end to the other end in the direction indicated by the symbol "5" by the planar discharge device 7, Apply the adhesive (3) in a plane shape. At this time, the applied adhesive 3 has a rectangular shape according to the shape of the display area 4, but the four corners do not become completely right-angled, and a rounded shape remains.

Next, as shown in FIG. 4B2, the plate-shaped body B2 to which the planar application was applied is reversed by the inversion device 56 so that the coated surface faces downward. At this time, the plate-shaped body B2 may be inverted after semi-curing treatment so that the shape of the applied adhesive 3 does not collapse.

Subsequently, as shown in FIG. 4C, the plate-shaped body B2 reversed by performing planar coating by the bonding device 55 is bonded to the plate-shaped body A1 subjected to point coating. As in the first aspect, at the time of bonding, the environment around the plate-like body may be in a low pressure or vacuum state so that air bubbles are not mixed in the adhesive 3. After bonding, as shown in FIG. 2, it is possible to reliably fill the corners of the display area 4 with the adhesive 3. Further, in this aspect, as in the second aspect, by performing the planar application and the supplementary application on separate plate-like bodies, the application steps can be processed in parallel, so that the working time can be shortened.

(4) The fourth to seventh aspects

In the 4th to 7th aspects, the change of the application shape of the supplementary coating is demonstrated. In the first to third aspects, the replenishment coating was performed by point-like coating in which one point was formed at each corner portion. However, in cases where the rounded shape of the corners when the adhesive is applied to the surface is large, and the area that is not filled with the adhesive is wide, or when the shape after bonding is to be made closer to the right angle, one point is placed in each corner. Rather than forming, it may be preferable to apply coating in a different pattern. The 4th to 7th aspects shown in FIG. 5 are to provide a preferable coating pattern when the planar application|coating with a large round shape of a corner part is performed. In Fig. 5, only one corner portion is depicted, but in reality, it is assumed that the application is applied to the four corners in the same pattern.

(a) The fourth aspect [application of multiple points of the same size]

One point is applied to a point corresponding to the actual intersection (top point) of the corner portion, and one point is applied in the vertical direction and the horizontal direction so as to be adjacent to the applied point, and three applied points are combined. In the fourth aspect, the respective application points are made substantially the same size. In the case of supplementary coating by three coating points, it is preferable to arrange them so as to form a right triangle when the centers of each coating point are connected. The number of application points formed by supplementary application is not limited to the illustrated three, and supplementary application may be performed by, for example, two application points or four or more application points. However, each application point is formed so that the shape of the diagonal line including the top point of the corner portion to be applied for supplementary application is symmetrical.

(b) The fifth aspect [application of multiple points of different sizes]

The point in which supplementary coating is performed in three points is common to the fourth aspect, but differs from the fourth aspect in that the supplementary coating is performed by applying points of different sizes. In the fifth aspect, the application points of the actual intersections are formed large, and the respective application points adjacent in the vertical and horizontal directions are formed to be small, but the present invention is not limited thereto, and the application points of the intersections are formed small, and the vertical and horizontal directions Each adjacent application point may be formed large. However, in order to make the distance from the outer edge of the plate body the same in the vertical direction and the horizontal direction, the size of the application point of the intersection and the respective application points adjacent in the longitudinal and transverse directions are the same size. The number of application points formed by supplementary application is not limited to the illustrated three, and supplementary application may be performed by, for example, two application points or four or more application points. However, each application point is formed so that the shape of the diagonal line including the top point of the corner portion to be applied for supplementary application is symmetrical.

(c) The sixth aspect [applied in a straight L shape]

Supplementary coating is applied to the round corners of the surface-shaped adhesive applied so that the L-shaped valleys face each other. Here, the L-shape is an L-shape having the same length in the longitudinal direction and the transverse direction, and a coating pattern in which a diagonal shape including a top point of a corner portion to be subjected to supplementary coating is symmetrical is formed. The position of the L-shape formed by supplementary application may be a position where the side surface is attached to the adhesive 3 applied in a planar shape, or may be a position separated from each other.

(d) The 7th Sun [Combination of Lines and Points]

The supplemental coating pattern of the seventh aspect is constituted by a coating point corresponding to a practical intersection (top point) of a corner portion, and a coating line positioned between the coating point and an adhesive applied in a plane shape. It is preferable that this coating line has a shape that follows the curve of the corner portion of the adhesive applied in a plane shape.

According to the fourth to seventh aspects described above, even when the rounded shape of the corner portion of the adhesive applied in a plane shape is large and the area not filled with the adhesive is wide, the adhesive can be spread widely to the corner portion. Moreover, the corner part of the application shape of the adhesive after bonding the pair of plate bodies can be made closer to the right angle.

Here, the application pattern of the replenishment coating is not limited to the above, and may be an application pattern in which a diagonal shape including the top point of the corner portion to be replenished is symmetrical, and the number of points or lines is increased or decreased. It is natural that various application shapes can be combined or performed.

In performing replenishment coating, for example, a valve body that advances at high speed is collided against a valve seat installed at the end of a flow path communicating with the nozzle, or a valve body that advances at high speed is immediately before colliding with the valve seat. Jet-type discharge device that stops and ejects the adhesive from the tip of the nozzle, and an air-type discharge device that discharges from the nozzle by applying pressure-adjusted air to the adhesive in the storage container only for a desired time. It is disclosed. Here, the jet type ejection device is excellent in forming points, but it is also possible to realize a coating pattern by a straight line composed of a plurality of points.

Hereinafter, the details of the present invention will be described by examples, but the present invention is not limited by any examples.

Example 1

<Discharge device>

(1) Surface type discharge device

The planar ejection device 7 is provided with a film-type application nozzle capable of applying an adhesive with a uniform thickness in a film form over a wide range of the surface of an object to be coated. The film-type coating nozzle includes a branch block having a branch path structure, a tip member having a discharge port formed in a wide width in the longitudinal direction, and a fine tube communicating with the branch path structure. ) A tube portion formed by installing a plurality of custom tubes having an inlet port and a custom tube outlet port communicating with the discharge port of the tip member. Here, the branch block has a plurality of steps of branching portions consisting of a room for branching a flow path communicating with the inlet, and the length to the outlet of the flow path branched to the branch provided at the same stage is configured to be the same. The member has a groove constituting a discharge port, the length S in the width direction of the end face of the discharge port is longer than the inner diameter d of the custom tube outlet, and the custom tube outlet is the groove They are installed at approximately equal intervals on the innermost surface of the part. As such a film-type coating nozzle, for example, it is disclosed to use the film-type coating nozzle described in Patent Publication Nos. 2012-239930 to the applicant. 6 is a cross-sectional view of a film-type coating nozzle 9 of the planar discharge device according to the first embodiment.

In the structure of the branch path in the film-type coating nozzle 9 in FIG. 6, the adhesive 3 flowing in from one inlet 10 is branched by three branches, and a total of 12 pieces are installed in a straight line. It flows from the custom tube 11 to the discharge groove 12 to be discharged. Specifically, first, the adhesive 3 flowing from one inlet 10 is two equally and substantially equal length flows in one branch 16 installed in the first branch block 13 ( 19). Then, by each of the two branch portions 17 installed in the branch block 14 in the second stage, the adhesive 3 branched in the first stage is again two equal and substantially equal lengths of flow 20 ). Then, by each of the four branch portions 18 installed in the branch block 15 in the third step, the adhesive 3 branched in the second step is three equally and substantially equal length flows 21 Branches to. Then, it flows into the three tubules 11 communicating with each of the four branch portions 18 installed in the branch block 15 of the third stage, and from the lower opening of the tubule 11 to the discharge groove 12 It flows out and is discharged from the discharge groove part 12 which opens downward. Here, the lengths of branch flows between branches provided in the same branch block are all the same.

By configuring in this way, the pressure loss is also equalized by receiving the same ductal friction from any branching flow in the branching portion provided in the same branching block, so that each of the fine pipes installed in a straight line in the width direction ( The discharge amount from 11), and furthermore, the amount of the adhesive 3 flowing into the discharge groove 12 can be made substantially the same. And this makes it possible to perform film-like coating with a uniform thickness. The length of the discharge groove portion 12 is slightly shorter than the width of the plate-shaped body A1, and is a length capable of applying the necessary amount of adhesive 3 in the width direction of the plate-shaped body A1 at one time. In the example of FIG. 2, the length of the discharge groove portion 12 is set to be several mm wider than the width of the display area 4 in the horizontal direction. Thereby, the applied adhesive 3 is widened, and a planar application of the dotted line 3 shown in Fig. 2A can be realized. It is different from FIGS. 1, 3 and 4, and when the film-shaped application nozzle 9 is scanned in the width direction of the plate-shaped body A1, the length of the discharge groove 12 is indicated in the vertical direction of the display area 4 It should be several mm wider than the width of.

In order to perform the above-described planar coating, the planar discharge device 7 is mounted on the shaving cloth device 53. That is, in addition to the planar discharge device 7, a tank (not shown) for storing the adhesive 3 and a discharge valve (not shown) for supplying or stopping the adhesive 3 supplied from the tank to the nozzle 9 ), a table on which an object to be coated is mounted, and a shaving cloth device 53 including a nozzle 9 and a moving mechanism in the XYZ direction for relative movement of the object to be coated on the table (see FIG. 8 ). ).

(2) Replenishment discharge device

7 is a schematic cross-sectional view of the replenishment discharge device 8 according to the first embodiment. The discharge device 8 used for replenishment coating is a so-called jet type discharge device, and the valve seat member 26 is in a state in which the side surface of the valve body 23 is in a non-contact state with the inner surface of the liquid chamber 24. By moving toward a high speed and coming into contact with the valve seat member 26, it is possible to discharge the liquid material from the discharge port in a droplet state. In addition, a mechanism for rapidly stopping the rapidly moving valve body 23 without contacting the valve seat member 26 is provided, the valve body 23 is advanced at high speed, and then the valve body 23 is suddenly stopped. Then, the liquid material may be discharged in the form of droplets by applying an inertial force.

The replenishment discharge device 8 of the first embodiment includes a liquid contact portion 22 for discharging the supplied adhesive 3, and a drive unit for vertically moving the piston 37 and the valve body 23 ( 36) is the main component.

The liquid contact part 22 constitutes approximately the lower half of the main body 60 of the discharge device 8, and the liquid chamber 24, the valve seat member 26, the nozzle member 28, and the cap shape A member 29 and an extension member 33 are mainly provided.

In the liquid chamber 24, the valve body 23 is inserted and installed so as to move up and down, and a first sealing member 34 for preventing the adhesive 3 from leaking out is provided at the upper end of the liquid chamber 24. Installed. At the lower end of the liquid chamber 24, a valve seat member 26 including a bowl-shaped valve seat is provided.

The valve seat member 26 has a communication hole 25 formed in the center thereof, and the tip end of the valve body 23 contacts and is spaced apart from the center of the upper surface of the valve seat member 26, thereby opening and closing the communication hole 25 do. The nozzle member 28 has the tubular member 27 and is provided so as to contact the lower surface of the valve seat member 26. The upper opening of the tubular member 27 communicates with the communication hole 25, and the lower opening communicates with the outside world to constitute a discharge port. The valve seat member 26 and the nozzle member 28 are fixed by screwing the cap member 29 to a protrusion under the main body 60 in a state enclosed by the cap member 29.

The side surface of the liquid chamber 24 communicates with one opening of the second flow path 32 formed in the main body 60, and is supplied with the adhesive 3. The other opening of the second flow path 32 communicates with one opening of the first flow path 31 formed in the extension member 33. The other opening of the first flow path 31 is in communication with the storage container 30. To the storage container 30, a compressed gas pressure-adjusted by the second pressure reducing valve 48 is supplied through the second pipe 50.

The drive unit 36 constitutes an approximately upper half of the main body 60 of the discharge device 8 and mainly includes a piston 37, an air chamber 38, and a spring chamber 39.

A valve body 23 passing through the piston 37 is fixedly installed on the piston 37. When the piston 37 moves up and down the cylindrical space provided inside the main body 60, the valve body 23 also moves up and down. The piston 37 divides the cylindrical space provided inside the main body 60 into a lower air chamber 38 and an upper spring chamber 39.

Compressed gas for moving the piston 37 upward is supplied to the air chamber 38. The air chamber 38 is hermetically sealed by the second sealing member 43. The compressed gas for operating the piston 37 is pressure-adjusted by the first pressure reducing valve 47 and is supplied to the switching valve 44 through the first pipe 49. The switching valve 44 can alternatively switch the communication between the air port 45 and the first pipe 49 and the outside world, and by switching the switching valve 44, the air port 45 Compressed gas is supplied to the chamber 38 or the compressed gas in the air chamber 38 is exhausted to the outside. The switching operation of the switching valve 44 is controlled by the control device 51.

In the spring chamber 39, a spring 40 for moving the piston 37 downward and an adjustment screw 41 for adjusting a moving distance of the piston 37 are accommodated. At the upper end of the adjustment screw 41, a handle 42 for adjusting the retreat position of the piston is provided.

The above-described replenishment discharge device 8 operates as follows.

In the initial state (state before operation), the compressed gas is not supplied to the air chamber 38 (communication with the outside world), the piston 37 is pressed downward by the force of the spring 40, and the valve body 23 The tip of) is in contact with the valve seat 26.

Initially, when the switching valve 44 is switched and the first pipe 49 and the air port 45 are communicated, the compressed gas regulated by the first pressure reducing valve 47 flows into the air chamber 38. In response to the force of the spring 40, the piston 37 moves upward, and the tip of the valve body 23 is spaced apart from the valve seat 26. At this time, the compressed gas adjusted by the second pressure reducing valve 48 is supplied to the storage container 30, and the adhesive 3 is in a pressurized state, so that the adhesive 3 is transferred to the first flow path 31 and the It flows into the liquid chamber 24 through the second flow path 32. In addition, when the tip of the valve body 23 is kept spaced apart from the valve seat 26 for a predetermined time, the adhesive 3 passes through the communication hole 25 and the tubular member 27 of the valve seat 26, Spills out. In addition, after a predetermined time elapses, the switching valve 44 is switched to cut off communication between the first pipe 49 and the air port 45, and the air chamber 38 communicates with the outside to prevent the inside of the air chamber 38. When compressed air is released to the atmosphere, the piston 37 moves downward by the pressing force of the spring 40, and the tip of the valve body 23 abuts the valve seat 26. Thereby, the adhesive 3 which has flowed out from the tubular member 27 is divided into droplets 35 and discharged.

The above is the flow of a series of operations related to ejection of droplets once. In the case of discharging droplets a plurality of times, the above series of operations are repeated a desired number of times. In addition, in order to adjust the size of the droplet 35, the pressure of the compressed gas supplied to the storage container 30 and the switching valve 44 are operated so that the tip of the valve body 23 is removed from the valve seat 26. The time apart, the movement distance of the piston 37 and the valve body 23, and the like are adjusted.

The replenishment discharge device 8 is mounted on the corner part coating device 54. That is, in addition to the replenishment dispensing device 8, a corner part coating device comprising a table on which an object to be coated is mounted, and an XYZ direction movement mechanism for relatively moving the replenishment discharging device 8 and the object to be coated on the table ( 54) is applied (see Fig. 8).

<Adhesive application line>

An apparatus group (adhesive application line) that implements the above-described adhesive application method of Figs. 1 to 4 will be described. The adhesive application line of Example 1 described below is a device group consisting of a unit functionally related to a plurality of individual devices that perform each step, not all steps in a single device. Line.

Fig. 8 shows an explanatory diagram of a group of devices for implementing the adhesive application method of this embodiment. The device group shown in FIG. 8 is a device group that implements the application method of the first aspect shown in FIG. 1, and includes a shaving cloth device 53 with a planar discharge device 7 and a supplement discharge device 8 One corner coating device 54, a bonding device 55 for bonding a pair of plate bodies 1, 2, and each of these devices 53, 54, 55 are connected to each other, and the plate body 1, 2) It is made with a conveying device 70 which receives and passes between each device.

The shaving cloth device 53 includes a planar discharge device 7 having a film-type application nozzle 9 shown in FIG. 6, a table on which an object to be coated is mounted, a planar discharge device 7 and a coating mounted on the table. It is provided with an XYZ direction movement mechanism which moves a parabola relative. The corner coating device 54 is provided with a replenishment discharge device 8, a table on which an object to be coated is mounted, a replenishment discharge device 8, and an XYZ direction moving mechanism for relative movement of the object to be coated on the table. Are doing. For these XYZ direction movement mechanisms, for example, a combination of an electric motor and a ball screw, a mechanism using a linear motor, and a mechanism for transmitting power by a belt or a chain can be used.

As shown in Fig. 9, the bonding device 55 includes an upper table 61 and an upper table 61 for adsorbing and fixing one plate-like body (for example, plate-like body B2) to be bonded to the lower surface. A lower table 62 for adsorbing and fixing the upper driving device 63 to be moved in the vertical direction, the other plate-like body (for example, plate-like body A1) to be bonded to the upper surface, and a lower table 62 are provided. The lower drive device 64 for linear movement (XY) and rotational movement (θ) in the plane direction, and the vacuum chamber 65 for enclosing the upper and lower tables 61 and 62 and making the inside a vacuum state, and bonding The plate-like bodies 1 and 2 are carried in, and a carrying-in/out port 66 for carrying out the plate-like laminated body after bonding is provided.

The bonding step by the bonding device 55 is as follows, for example.

First, the plate-shaped bodies 1 and 2 to be joined are carried in from the carrying-in/out port, respectively, and are suction-fixed to the upper table 61 and the lower table 62, respectively. Next, in the lower table 62, while adjusting the position by performing linear movement (XY) and rotational movement (θ) in the plane direction, the upper table 61 is lowered, and the plate-shaped body adsorbed and fixed to the upper table 61 (B2) is brought into contact with the plate-shaped body A1, which is suction-fixed to the lower table 62, through the adhesive 3. Here, if necessary, the upper table 61 is lowered again to apply a pressing force. However, when the adhesive 3 is applied to a predetermined thickness, it is often only necessary to apply a pressing force to the plate body B2 by its own weight. After contact with the adhesive 3, when the suction fixing of the upper table 61 is released, the bonding operation is completed.

And, in order to prevent mixing of air bubbles or the like in the adhesive 3 during bonding, after carrying in the plate bodies 1 and 2, the carrying-in/out port 66 is closed, so that the inside of the vacuum chamber 65 is not shown. It is preferable to use a vacuum pump or the like to make the vacuum state.

The plate-like laminate after bonding is carried out from the carrying-in/out port 66 and proceeds to the next step.

As the conveying device 70 which connects each of the devices 53, 54, 55, a general conveying device that is well seen in the liquid crystal panel manufacturing step can be used. An example of the configuration of a conveying device 70 that performs conveyance by a conveying robot 71 provided with a hand 72 having an adsorption mechanism in FIG. 10A is shown in FIG. 10B. A configuration example of a conveying device 70 that conveys by rotation of a plurality of rollers 74 in contact with the lower surface of 2) is shown.

In the case of the conveying device 70 that is conveyed by the conveying robot shown in FIG. 10A, the coating devices 53 and 54 and the bonding device 55 are placed on both sides of the track 73 on which the conveying robot 71 moves. ) And the like are arranged, and the plate-shaped bodies 1 and 2 are carried in and out and transported by the hand 72 provided in the transport robot 71. The transfer robot 71 is capable of linear movement of the hand 72 in the horizontal plane, rotational movement of the hand 72 in the horizontal plane, and the lifting movement of the hand 72 (in a direction perpendicular to the ground). Do.

In the case of the conveying device 70 which conveys by rotation of a roller shown in FIG. 10B, the conveying device 70 is arrange|positioned between the coating devices 53, 54, the bonding device 55, etc., The plate bodies 1 and 2 are conveyed in one passage from the upstream side to the downstream side (approximately). Therefore, each of the devices 53, 54, 55 is arranged approximately in the order of the work steps.

An example of the step of applying the adhesive 3 to the plate-shaped body A1 will be described with reference to FIG. 8. The plate-shaped body A1 is, for example, a liquid crystal module having a screen size of 4 inches (about 60 mm x about 90 mm) to 18 inches (about 240 mm x about 360 mm). In addition, the screen size of the liquid crystal module is not limited to the size of the present embodiment, and the present embodiment can be applied to a liquid crystal module having a larger screen size.

The plate-shaped body A1 is first carried into the shaving cloth device 53 by the conveyance device 70. In the shaving cloth device 53, the adhesive 3 is applied in a plane shape while moving the planar discharge device 7 and the table relative to each other (Fig. 8(a)). The adhesive 3 is, for example, an ultraviolet curable adhesive having substantially the same curvature as that of glass. The plate-shaped body A1 to which the adhesive 3 has been applied in a plane shape is carried out from the shaving cloth device 53 by the conveying device 70, and carried into the corner part coating device 54. In the corner part coating device 54, the adhesive 3 is supplementally applied to the four corners of the plate-shaped body A1 while the replenishment discharge device 8 and the table are moved relative to each other (Fig. 8(b)). In Example 1, supplementary coating is performed by forming dots in the corners. The diameter of the adhesive to be formed is, for example, around 1 mm. The plate-shaped body A1 to which the adhesive 3 has been applied to the four corners is carried out from the corner part coating device 54 and then carried into the bonding device 55 by the conveying device 70. Moreover, the plate-shaped body B2 which is the bonding partner which has passed through a separate step is carried into the bonding apparatus 55 by the conveyance apparatus 70. In the bonding device 55, the plate-shaped body A1 to which the adhesive 3 was applied and the plate-shaped body B2 are adhered (Fig. 8(c)). The plate-like laminated body after bonding is carried out toward the next step (adhesive hardening, etc.) by the conveyance device 70.

The above is the operation for one step by the adhesive application line of Example 1.

Incidentally, the adhesive 3 is not limited to the one illustrated, and for example, it can be used in the range of 2,000 cps to 200,000 cps.

And the plate-shaped body B2 carried in to the bonding device 55 may be carried in in a state made to be inverted, or even if a reversing device 56 is provided in the bonding device 55 and inverted in the bonding device 55 do. In addition, as described in the description of Fig. 1 as well, the plate-shaped body A1 and the plate-shaped body B2 are replaced, and the adhesive 3 may be applied to the plate-shaped body B2.

After bonding the plate-shaped body A1 and the plate-shaped body B2, it was confirmed by visual observation that the adhesive was widely spread to the immediate vicinity of the four corners of the plate-shaped body A1. In addition, it was confirmed that the application of the adhesive 3 was performed in a good state without any displacement or mixing of air bubbles. Then, by measuring the film thickness of the adhesive 3 with a film thickness measuring device, you may inspect the coating state.

According to the adhesive application line of Example 1 described above, since the corner part application device 54 for applying the adhesive to the four corners of the plate-shaped body is provided, the adhesive 3 applied in a plane shape is near the corner where the round shape remains. In addition, the application method of supplementary application of the adhesive 3 can be performed, so that the corner portion of the display area 4 after bonding can be reliably filled with the adhesive 3. Therefore, the plate-shaped bodies can be firmly fixed, and deformation or damage can be prevented. When the plate-shaped body is a liquid crystal module, it becomes possible to provide a high-quality liquid crystal module without color irregularities.

Example 2

11 is an explanatory diagram of an apparatus group for performing the adhesive application method according to the second embodiment. The apparatus group (adhesive agent application line) of Example 2, in the apparatus group of Example 1, was provided with a face and corner coating apparatus 57 in place of the shaving cloth apparatus 53 and the corner coating apparatus 54 Is to do. That is, the device group of Example 2 includes the surface and corner part coating device 57, the bonding device 55 for bonding the pair of plate bodies 1, 2, and their respective devices 57, 55 It is different in that it is provided with the conveyance device 70 which makes contact and the plate-shaped body 1 and 2 receive between each device.

The surface-and-corner coating device 57 includes a surface-type discharge device 7 as in Example 1, a replenishment discharge device 8 as in Example 1, a table on which an object to be coated is mounted, and a plane-type discharge device ( 7) And the replenishment discharging device 8, and the XYZ direction moving mechanism for moving the object to be coated on the table relative to each other are provided, and planar coating and replenishment coating can be performed within one device. The planar discharging device 7 is installed in the XYZ direction moving mechanism, and the two replenishing discharging devices 8 are fixedly installed to the planar discharging device 7 with the positional relationship necessary to apply coating to the four corners of the plate-shaped body. have. By making the distance between the replenishment discharge devices 8 equal to the distance of the adhesive 3 to be replenished, the movement can be completed in only one direction, and the application time can be shortened.

As for the conveyance device 70, like Example 1, a general conveyance device which is well seen in the liquid crystal panel manufacturing step can be used. A configuration example of a conveying device 70 that performs conveyance by a conveying robot 71 provided with a hand 72 having a suction mechanism in FIG. 12(a) is shown in FIG. 12(b). A configuration example of a conveying device 70 that conveys by rotation of a plurality of rollers 74 in contact with the lower surface of 2) is shown.

An example of the step of applying the adhesive 3 to the plate-like body A1 will be described with reference to FIG. 11.

The plate-shaped body A1 is initially carried into the surface and corner part coating device 57 by the conveyance device 70. In the surface and corner part application device 57, the adhesive 3 is applied in a surface form while moving the plane discharge device 7 and the table relative to each other. Subsequently, while the replenishment discharge device 8 and the table are moved relative to each other, the adhesive 3 is replenished on the four corners (Fig. 11(a)). Here, two points of application are simultaneously applied by two replenishment discharge devices 8. Subsequently, the plate-shaped body A1 is carried out from the surface and corner|corner part coating apparatus 57 by the conveyance apparatus 70, and is carried into the bonding apparatus 55. Moreover, the plate-shaped body B2 which is the bonding partner which has passed through a separate step is carried into the bonding apparatus 55 by the conveyance apparatus 70. In the bonding device 55, the plate-shaped body A1 to which the adhesive 3 was applied and the plate-shaped body B2 are adhered (Fig. 11(b)). The plate-like laminated body after bonding is carried out toward the next step (adhesive hardening, etc.) by the conveyance device 70.

The above is the operation of one step by the adhesive application line of Example 2.

And, similarly to the first aspect, the plate-shaped body B2 carried into the bonding device 55 may be carried in in a reversed state, and the inversion device 56 is provided in the bonding device 55, and the bonding device ( 55) You may reverse it within. In addition, as described also in the description of FIG. 1, the plate-shaped body A1 and the plate-shaped body B2 may be replaced to apply the adhesive 3 to the plate-shaped body B2.

In the second embodiment described above, compared to the first embodiment, the shaving cloth device 53 and the corner part application device 54 are replaced with the face and corner part application device 57, and the transfer device 70 communicates with each other. It is possible to save installation space since it is installed in one place.

Example 3

13 is an explanatory diagram of an apparatus group for performing an adhesive application method according to Example 3. FIG. The apparatus group (adhesive application line) of Example 3 is a group of apparatuses that implement the application method of the second aspect shown in FIG. 3, and a shaving cloth apparatus 53 provided with a planar discharging apparatus 7 and a replenishing discharging apparatus The corner part coating device 54 provided with (8), the bonding device 55 which bonds the pair of plate bodies 1, 2, and the inversion device 56 are provided. The device group of the present embodiment is different from the device group of the first embodiment in that the reversing device 56 is further provided, and in the arrangement order of the shaving cloth device 53 and the corner part application device 54. Since the configurations of the shaving cloth device 53, the corner part coating device 54, and the bonding device 55 are the same as those of the first embodiment, explanations are omitted.

As for the conveying device 70, similarly to the first and second examples, a general conveying device that is well seen in the liquid crystal panel manufacturing step can be used. 14(a) shows an example of the configuration of a conveying device 70 that is conveyed by a conveying robot 71 provided with a hand 72 having an adsorption mechanism in FIG. 14(b). A configuration example of a conveying device 70 that conveys by rotation of a plurality of rollers 74 in contact with the lower surface of 2) is shown.

An example of a step of applying the adhesive 3 to the plate-shaped body A1 will be described with reference to FIG. 13.

The plate-shaped body A1 is first carried into the shaving cloth device 53 by the conveyance device 70. In the shaving cloth device 53, the adhesive 3 is applied in a plane shape while the plane-shaped discharge device 7 and the table are moved relative to each other (Fig. 13(a)). The plate-shaped body A1 to which the adhesive 3 has been applied in a plane shape is carried out from the shaving cloth device 53 by the conveying device 70 and carried into the bonding device 55. On the other hand, the plate-shaped body B2 which has passed through a separate step is carried into the corner part coating device 54 by the conveyance device 70. In the corner part coating device 54, the adhesive 3 is applied in a dot shape while the replenishment discharge device 8 and the table are moved relative to each other (Fig. 13(b1)). The plate-shaped body B2 to which the adhesive 3 has been supplementally applied is carried out from the corner part coating device 54 by the conveying device 70 and carried into the reversing device 56. In the reversing device 56, the plate-shaped body B2 is inverted so that the surface to which the adhesive 3 is applied faces downward (Fig. 13(b2)). At this time, the plate-shaped body B2 may be inverted after semi-curing treatment so that the shape of the applied adhesive 3 does not collapse. Subsequently, the plate-shaped body B2 made to be reversed is carried out from the reversing device 56 by the conveying device 70 and carried into the bonding device 55. The plate-shaped body A1 has already been carried in to the bonding device 55, and the plate-shaped body A1 and the plate-shaped body B2 are adhered (FIG. 13(c)). The plate-like laminate after bonding is carried out toward the next step (adhesive curing, etc.) by the conveyance device 70.

The above is the operation of one step by the adhesive application line of Example 3.

In Example 3, the application steps can be processed in parallel by performing planar coating and supplemental coating on separate plate bodies, so that the working time can be shortened.

Example 4

15 is an explanatory diagram of an apparatus group for implementing the adhesive application method according to the fourth embodiment. The apparatus group (adhesive application line) of Example 4 is a group of apparatuses that implement the application method of the third aspect shown in FIG. 4, and the arrangement of the shaving cloth device 53 and the corner part coating apparatus 54 of Example 3 Will be replaced. That is, the device group of Example 4 includes a shaving cloth device 53 provided with a planar discharging device 7, a corner coating device 54 provided with a replenishing discharging device 8, and a pair of plate-shaped bodies. It comprises a bonding device 55 for bonding (1, 2) and a reversing device 56. Since the configurations of the shaving cloth device 53, the corner part coating device 54, and the bonding device 55 are the same as those of the first embodiment, explanations are omitted.

As for the conveying device 70, similarly to Examples 1 to 3, a general conveying device well seen in the liquid crystal panel manufacturing step can be used. A configuration example of a conveying device 70 that performs conveyance by a conveying robot 71 provided with a hand 72 having an adsorption mechanism in FIG. 16A is shown in FIG. 16B. A configuration example of a conveying device 70 that conveys by rotation of a plurality of rollers 74 in contact with the lower surface of 2) is shown.

An example of the step of applying the adhesive 3 to the plate-shaped body A1 will be described with reference to FIG. 15.

The plate-shaped body A1 is initially carried into the corner part coating device 54 by the conveyance device 70. In the corner part coating device 54, the adhesive 3 is replenished to the corner part while the replenishment discharge device 8 and the table are moved relative to each other (Fig. 15(a)). The plate-shaped body A1 to which the adhesive 3 has been applied supplementary to the four corners is carried out from the corner part coating device 54 by the conveying device 70 and carried into the bonding device 55. On the other hand, the plate-shaped body B2 which has passed a separate step is carried into the shaving cloth device 53 by the conveyance device 70. In the shaving cloth device 53, the adhesive 3 is applied in a plane shape while the plane-shaped discharge device 7 and the table are moved relative to each other (Fig. 15(b1)). The plate-shaped body B2 to which the adhesive 3 was applied in a plane shape is carried out from the shaving cloth device 53 by the conveying device 70 and carried into the reversing device 56. In the reversing device 56, the plate-shaped body B2 is inverted so that the surface to which the adhesive 3 is applied faces downward (Fig. 15(b2)). At this time, the plate-shaped body B2 may be inverted after semi-curing treatment so that the shape of the applied adhesive 3 does not collapse. Subsequently, the plate-shaped body B2 made to be reversed is carried out from the reversing device 56 by the conveying device 70 and carried into the bonding device 55. The plate-shaped body A1 is already carried in to the bonding apparatus 55, and the plate-shaped body A1 and the plate-shaped body B2 are adhered (FIG. 15(c)). The plate-like laminate after bonding is carried out toward the next step (adhesive curing, etc.) by the conveyance device 70.

The above is the operation for one step by the adhesive application line of Example 4.

In Example 4, as in Example 3, by performing planar application and supplementary application to separate plate bodies, the application steps can be processed in parallel, so that the working time can be shortened.

Example 5

Example 5 relates to a coating and bonding apparatus capable of performing coating and bonding steps in one apparatus.

As shown in Fig. 17, the coating and bonding device 80 according to Example 5 includes two tables 81 and 82 on which the plate bodies 1 and 2 are mounted, a planar ejection device 7, and an adhesive curing. A device 88, an upper table and an upper table driving device (both not shown), a reversing device 89, a mount 90, and a control device (not shown) are mainly provided.

The mount 90 is provided with a shaving cloth portion 83 on which the surface type discharge device 7 is installed, a supplementary application portion 84 on which the supplementary discharge device 8 is installed, and an adhesive curing device 88 ( (假) It is divided into a hardening part 85, a junction part 86 in which an upper table and an upper table driving device (both not shown) are provided, and an inverting part 87 in which a reversing device 89 is provided. In the mount frame 90, a planar discharge device 7 (surface coating device), a replenishment discharge device 8 (corner part coating device), an upper table and an upper table driving device (corresponding to a bonding device), and a reversing device 89 And conveying devices 81, 82, 91 and 92 are mounted. The mount 90 may be configured by connecting a plurality of members.

A control device (not shown) includes a storage device that stores a control program for controlling the operation of each device, and an arithmetic device that executes a control program read from the storage device.

The shaving cloth part 83 and the temporary hardening part 85 are connected by a pair of sliding rails A 91, and the table A 81 can move freely between the shaving cloth part 83 and the temporary hardening part 85. I can. Similarly, the replenishment application portion 84 and the joint portion 86 are connected by a pair of sliding rails B 92, and the table B 82 is positioned between the replenishment application portion 84 and the joint portion 86. Can move freely. In addition, the plate-shaped body in the temporary hardening part 85 which has finished temporary hardening is conveyed to the bonding part 86 by the inversion device 89. As described above, in the present embodiment, the sliding rail A91, the rail B92 and the table A81, and the slider and the reversing device 89 attached to the table B82 constitute the conveying device.

The planar discharge device 7 is the same as in Examples 1 to 4, and is capable of moving relative to the table A81.

The replenishment discharge device 8 is the same as the first to fourth embodiments, and is capable of moving relative to the table B 82.

The adhesive curing device 88 has an ultraviolet irradiation portion and is capable of moving the ultraviolet irradiation portion and the table relative to each other.

The reversing device 89 includes a hand having a suction mechanism, a linear motion device that enables linear movement of the hand, and an up-down rotation device 93 that enables a reversing operation by the hand. , A horizontal rotation device 94 that enables horizontal rotational movement of a hand, and an elevation device that enables an elevation movement of the hand. The reversing device 89 can hold the plate-like body by a suction mechanism, and rotate the plate-like body by means of a rotating device provided at the root of the hand to reverse it.

An upper table (not shown) has an adsorption mechanism for adsorbing and fixing the plate-like body. An upper table driving device, not shown, can move the upper table up and down. In this embodiment, the upper table and the upper table driving device constitute a bonding device.

The coating and bonding device 80 of this embodiment operates as follows.

When one plate-like body (hereinafter referred to as the plate-like body 1) is mounted on the table A 81, the control device moves the table A 81 to the shaving cloth 83, and the surface-shaped discharge device 7 As a result, the adhesive 3 is applied to the plate body 1 in a plane shape. When the planar application is completed, the control device moves the table A 81 on which the plate body 1 is mounted to the temporary curing unit 85, and temporarily cures the adhesive 3 applied by the adhesive curing device 88 ( Semi-cured). Subsequently, the control device takes out the plate-shaped body 1 which has been provisionally hardened by the inversion device 89 from the temporary hardening part 85, inverts it, and then carries it into the bonding part 86. The plate-shaped body 1 carried in the junction part 86 is suction-fixed to the upper table.

When the other plate-like body (hereinafter referred to as the plate-like body 2) is mounted on the table B 82, the control device moves the table B 82 to the replenishment application unit 84, and the replenishment discharge device 8 Supplementary coating of the adhesive 3 to the plate body 2 by ). When the replenishment application is completed, the control device moves the table B 82 on which the plate body 2 is mounted to the joint portion 86.

When the plate-shaped body 1 and the plate-shaped body 2 are carried into the joining part 86, the control device lowers the upper table by the upper table drive device, and joins the two plate-shaped bodies. The plate-like laminate, which has been joined, is taken out to the next step.

According to the coating and bonding device 80 of the present embodiment described above, since application to bonding can be performed in one device, the installation space and installation cost of the transfer device can be reduced. In addition, it becomes possible to prevent problems (for example, falling or mistake) during conveyance.

1: plate-shaped body A, 2: plate-shaped body B, 3: adhesive, 4: display area, 5: shaving cloth direction, 6: replenishment application direction, 7: surface-shaped discharge device, 8: supplementary discharge device, 9: film-shaped application nozzle , 10: inlet, 11: customs, 12: discharge groove, 13: 1st branch block, 14: 2nd branch block, 15: 3rd branch block, 16: 1st branch, 17: 2 Stage branch, 18: 3rd branch, 19: 1st branch, 20: 2nd branch, 21: 3rd branch, 22: liquid contact, 23: valve body, 24: liquid chamber, Reference Signs List 25 communication hole 26 valve seat member 27 tubular member 28 nozzle member 29 cap member 30 storage container 31 first flow path 32 second flow path 33 extension member 34 First sealing member, 35: droplet, 36: driving part, 37: piston, 38: air chamber, 39: spring chamber, 40: spring, 41: adjusting screw, 42: handle, 43: second sealing member, 44: switching Valve, 45: air port, 46: compressed gas source, 47: first pressure reducing valve, 48: second pressure reducing valve, 49: first pipe, 50: second pipe, 51: control device, 52: adhesive Application device (line), 53: shaving cloth device, 54: corner part application device, 55: bonding device, 56: reversing device, 57: face and corner part application device, 58: display area corner part, 59: adhesive via Retrieval unit, 60: main body, 61: upper table, 62: lower table, 63: upper drive device, 64: lower drive device, 65: vacuum chamber, 66: carry-out port, 70: transfer device, 71: transfer robot, 72: hand, 73: track, 74: roller, 80: coating bonding device, 81: table A, 82; Table B, 83; Razor cloth part, 84: supplementary application part, 85: temporary hardening part, 86: joint part, 87: reverse part, 88: adhesive curing device, 89: reverse device, 90: mount, 91: sliding rail A, 92; Sliding rail B, 93; Reverse pivot device, 94: horizontal pivot device

Claims (22)

In a method for manufacturing a plate-shaped laminate, in which a pair of substantially similar plate-shaped bodies are joined with an adhesive to produce a plate-like laminate,
A planar application step of applying an adhesive in a square shape to the first plate body by scanning a nozzle having a rectangular discharge groove so as not to protrude from the outer edges of the first plate body and the second plate body ( planar application step);
In the vicinity of the four corner portions of the first plate body and the second plate body so that the first plate body or the second plate body does not protrude from the outer edges of the first plate body and the second plate body In addition, a supplementary application step of applying an adhesive to a portion to which the adhesive is not applied or to a portion opposite to the portion in the planar application step; And
A joining step of joining the first plate body and the second plate body through the planar application step and the supplementary application step;
Including,
In the planar application step, a nozzle having a discharge groove having a length capable of applying a necessary amount of adhesive in the width direction of the first plate body by one scan is provided, which is perpendicular to the width direction of the first plate body. Applying the adhesive by injecting once in the direction,
In the supplementary application step, the dot-shaped application is applied to the four corners, and the distance between the square-shaped adhesive having a rounded shape and the dot-applied adhesive at the corner portion applied in the planar application step is formed by dot application. Applied so as to be less than half the diameter of the point,
Method for producing a plate-shaped laminate. The method of claim 1,
In the supplementary application step, an adhesive is applied by an application pattern in which a diagonal shape including a top point of a corner portion to be applied is symmetrical. The method of claim 1,
In the supplementary application step, the square-shaped adhesive applied in the planar application step and the side surfaces of the point-shaped adhesive applied are applied so that the side surfaces of the adhesive are attached. The method of claim 1,
In the planar application step, the first plate body and the second plate body have a rectangular shape located inside from the outer edge of the four sides of the smaller one of the first plate body and the second plate body. A method for producing a plate-like laminate, in which coating is applied so that the area occupies 80% or more of the smaller area. The method of claim 1,
The method of manufacturing a plate-shaped laminate, wherein the application pattern in the supplementary application step includes a pattern consisting of dots and/or lines. The method of claim 1,
The method for manufacturing a plate-shaped laminate, wherein the application pattern in the supplementary application step includes an L-shaped pattern. The method according to any one of claims 1 to 6,
In the supplemental application step, a method of manufacturing a plate-shaped laminate, applying an adhesive to the first plate-shaped body. The method according to any one of claims 1 to 6,
In the supplemental application step, a method of manufacturing a plate-shaped laminate, applying an adhesive to the second plate-shaped body. The method of claim 8,
A method of manufacturing a plate-shaped laminate, wherein the planar coating step and the supplemental coating step are performed in parallel. The method according to any one of claims 1 to 6,
The method of manufacturing a plate-shaped laminate, wherein the discharge groove portion of the nozzle has a length shorter than a width of any of the first plate-shaped body and the second plate-shaped body. The method of claim 10,
The plate-shaped laminate formed by bonding the first plate-shaped body and the second plate-shaped body is a component of a liquid crystal display having a display area,
The method of manufacturing a plate-shaped laminate, wherein the discharge groove portion of the nozzle is wider than the display area. An apparatus for manufacturing a plate-like laminate for manufacturing a plate-like laminate by bonding a pair of substantially similar plate-like bodies with an adhesive,
A shaving cloth device for applying an adhesive to the plate body in a square shape;
A corner portion application device for applying an adhesive to the vicinity of the four corner portions of the plate body;
A bonding device for bonding the first plate body and the second plate body to which the adhesive is applied;
A conveyance device that connects the shaving cloth device, the corner part coating device, and the bonding device; And
controller;
Including,
And a nozzle having a discharge groove having a length capable of applying an amount of adhesive required in the width direction of the first plate body by one scan,
The control device,
a) Applying an adhesive to the shaving cloth device in a square shape by injecting the nozzle once to the first plate body so that it does not protrude from the outer edges of the first plate body and the second plate body. Application means to make;
b) In the corner part coating device, the first plate-shaped body or the second plate-shaped body, so that the first plate-shaped body and the second plate-shaped body do not protrude from outer edges of the first plate-shaped body and the second plate-shaped body. 2 applying means for applying an adhesive to a portion near the four corner portions of the plate-shaped body and to which the adhesive is not applied by the shaving cloth device or to a portion opposite to the portion; And
c) a bonding means for bonding a pair of plate-like bodies to which an adhesive has been applied by the corner part application device to the bonding device, and
The application means of b) applies point-shaped coating to four corner portions of the corner portion application device, and the distance between the square-shaped adhesive having a rounded shape and the point-shaped adhesive applied by the shaving cloth device A, applying so as to be less than half of the diameter of the dot formed by dot coating,
An apparatus for manufacturing a plate-shaped laminate. The method of claim 12,
Preparation of a plate-like laminate in which the application means of b) applies an adhesive to the corner part application device by an application pattern in which a diagonal shape including a top point of a corner part to be applied is symmetrical. Device. The method of claim 12,
The apparatus for manufacturing a plate-shaped laminate, wherein the application means of b) applies to the corner part application device so that the side surfaces of the square-shaped adhesive applied by the shaving cloth device and the point-shaped adhesive applied are attached. The method of claim 12,
The application means of a) is in the shaving cloth device, the first plate-shaped body and the first plate-shaped body having a rectangular shape located inside from the outer edge of the four sides of the plate-shaped body on either side of the second plate-shaped body. An apparatus for manufacturing a plate-shaped laminate, wherein the application is applied to an area occupying 80% or more of an area of either a sieve or the second plate-shaped body. The method of claim 12,
The shaving cloth device includes a planar discharge device, a table on which an object to be coated is mounted, and an XYZ direction moving mechanism for relatively moving the planar discharge device and the object to be coated on the table,
The device for manufacturing a plate-shaped laminate, wherein the corner part coating device is configured by mounting a replenishment discharge device on an XYZ direction moving mechanism of the shaving cloth device. The method of claim 16,
The apparatus for manufacturing a plate-like laminate, wherein the planar discharge device includes a nozzle having a discharge groove portion having a length shorter than a width of any of the first plate-shaped body and the second plate-shaped body. The method of claim 17,
The plate-shaped laminate formed by bonding the first plate-shaped body and the second plate-shaped body is a component of a liquid crystal display having a display area,
An apparatus for manufacturing a plate-shaped laminate, wherein the discharge groove portion of the nozzle is wider than the display area. The method according to any one of claims 12 to 18,
An apparatus for manufacturing a plate-like laminate, further comprising an inversion device for vertically inverting the plate-like body. The method of claim 19,
The device for manufacturing a plate-shaped laminate, wherein the shaving cloth device, the corner part coating device, the bonding device, and the conveying device are mounted on the same mount. delete delete

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