KR20120087893A - Panel attaching method and panel attaching device - Google Patents

Abstract

The present invention relates to a method and apparatus for adhering a transparent protective panel without generating bubbles on the surface of the display panel. Either one of the display panel or the transparent protective panel when the two panels having a buffer layer made of viscoelastic material on the adhesive surface of the display panel or the protective panel are bonded with a degassing aid having a viscosity of 10 to 100 cps (first panel) The other side (the 2nd panel 50) is arrange | positioned so that an adhesive surface may form an acute angle in the state which contacted or adjoined the edge sides 40a and 50a of both panels, and the degassing aid is provided between (40). While introducing, the second panel is rocked and bonded to bring the other end side 50b of the second panel closer to the other end side 40b of the first panel. Adhesion is performed in the state which inclined the 1st panel to the other edge 40b upward, and introduce | transduces a deaeration aid from one edge side of a 1st panel, and the other edge of a 2nd panel is 1st As it nears the other end of the panel, this introduction position moves to the other end side of the first panel.

Description

PANEL ATTACHING METHOD AND PANEL ATTACHING DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for attaching panels and a device for attaching panels. More specifically, the present invention relates to liquid crystal displays and plasmas used in televisions, computers (desktops, laptops), mobile phones and PDAs. A panel bonding method and a bonding apparatus for bonding a transparent protective panel to a display panel such as a plasma display.

As an example of the display panel 200, a liquid crystal display panel will be described as an example. As shown in FIG. 14, the liquid crystal display panel includes two pieces of glass having transparent electrodes 203 and 204 formed by a metal oxide film or the like. The substrate 201, 202 is arranged so as to face each other with a gap of several μm therebetween through a spacer 205 or the like, and the basic structure in which the liquid crystal composition 206 is filled in this gap. And changing the alignment state of the liquid crystal by applying a voltage to the transparent electrodes 203 and 204, the light from the backlight 207 disposed on the side opposite to the display surface side is transmitted to the display panel 200. It is comprised so that the pattern (image pattern) of the light appearing on the display surface side may be changed by controlling the state which passes through.

Such display panel 200 is covered with a transparent protective panel 210 such as acrylic or glass to protect the surface thereof.

Moreover, as this protection panel 210, the lower electrode board 210a which made it possible to acquire on-screen positional information etc. by pressing on the screen by the pen tip or finger tip of a touch pen is provided. It also includes a touch panel provided on the adhesive surface side with the display panel 200.

As described above, the protective panel 210 covering the surface of the display panel 200 can be suitably protected, for example, the display panel 200 when an impact from the outside is added. ), Even if an impact is applied to the protection panel 210, which is mounted via a suitable gap G between the two, such as by arranging the spacer 211 between the protection panel 210 and the like. It is configured so as not to be directly applied to the display panel 200, and particularly in the protective panel 210 as a touch panel provided with the lower electrode substrate 210a, the protective panel 210 has a pen tip of a touch pen. Since the pressing pressure by the fingertip is applied, the necessity of such a buffer is high.

However, the formation of the above-described gap G is effective in cushioning shocks and the like, but since the air layer is formed by the air enclosed in the gap G, the difference between the refractive index of the protective panel 210 and the refractive index of the air layer is different. The amount of light loss attributable to the light and the like degrades the optical characteristics on the display surface of the liquid crystal display, and in particular, reduces the visibility in the outdoors (under sunlight).

In order to cope with such a problem, it is conceivable to increase the luminance of the backlight 207 to ensure visibility. However, the luminance of the backlight 207 may be adjusted for a mobile phone, a digital camera, an electronic notebook, etc., which are powered by a battery. Raising leads to an increase in power consumption, and faces the choice of whether to increase the size of the battery or to allow the shortening of the usable time, thereby reducing the weight reduction and continuous use time. For those products that require prolonged periods of time, the above counterparts counter market demands.

For this reason, there is a demand for a structure capable of improving the visibility in outdoor and the like while enabling the above-described shock absorption.

In order to solve this problem, the gap G between the protective panel 210 and the display panel 200 is filled with a transparent silicone gel, for example, by forming a silicone gel as a buffer layer instead of the air layer. It has also been proposed to close the refractive index of the protective panel and the refractive index of the silicon gel arranged in the gap, thereby preventing the degradation of the optical characteristics and the deterioration of the image quality on the display surface of the liquid crystal display device (Patent Document 1). Prior art).

However, in this method, it is difficult to stick each other so that bubbles do not form between the protective panel 210 and the silicone gel and / or between the display panel 200 and the silicone gel, and when bubbles are generated, the shape of the product is Not only is it bad, but also partial degradation of optical characteristics arises on the display surface side of a liquid crystal display device, and the visibility falls.

In order to prevent the occurrence of such bubbles, a transparent resin sheet (a weakly adhesive transparent resin sheet) made of a plasticizer-containing polymer is bonded between the display panel 200 and the protective panel 210 as a buffer layer. Water, in particular distilled water, ion-exchanged water, ultrapure water, water or alcohol mixtures, etc., between one or both of the transparent resin sheet and the display panel and between the transparent resin sheet and the transparent protective panel. It is also proposed to bring the visible side of the liquid crystal panel and the transparent protective panel into close contact with each other in a state where the volatile liquid is disposed (see Patent Document 1).

Japanese Patent Laid-Open No. 9-197387 Japanese Patent Application Laid-Open No. 2007-238754

As described above, in the configuration in which the silicone gel or the like is filled between the display panel and the transparent protective panel to remove the air layer, the deterioration of the optical characteristics and the deterioration of image quality caused by the difference in refractive index and the like can be reduced. Is easy to enter, and this creates a new problem that bubbles are generated on the joining surface.

In contrast, in the invention described in Patent Document 1, a volatile liquid such as water is disposed between the display panel and the weakly adhesive transparent resin film, and / or between the transparent protective panel and the transparent resin film, thereby We can prevent bubble from entering.

Here, if a relatively small display device is intended, such as a display device provided in a handwriting input / output terminal or a vehicle navigation system (column “0032” in Patent Document 1), which is scheduled in Patent Document 1, By arranging volatile liquids such as water, the generation of bubbles may be suppressed.

However, in the case where the object to which the transparent protective panel is bonded is a relatively large display panel such as a large screen TV, for example, simply adopting a configuration in which volatile liquids such as water are disposed on the adhesive surface completely generates bubbles. Cannot be prevented.

Therefore, when such a bubble is generated, in order to remove this bubble, for example, by pressing the hera on the transparent protective panel tightly or the like, the work of sweeping the bubble toward the peripheral side of the transparent protective panel is performed. It is necessary to do complicated work.

In addition, in the invention described in Patent Document 1, a volatile liquid such as water introduced between a weakly adhesive pressure sensitive adhesive sheet made of a plasticizer-containing polymer and a display panel or a transparent protective panel is pushed on the adhesive surface by the pressure at the time of adhesion. Even if it comes out or remains on the adhesive surface, it is premised to be removed from the bonding surface by evaporation or the like, but since the volatilization of the volatile liquid is performed at the periphery of the panel, the volatile liquid at the periphery of the panel evaporates and this part is removed. When the adhesive sheet adheres directly to the surface of the display panel or the protective panel, the volatile liquid remaining inside of it loses its place to escape and is difficult to evaporate, and remains on the adhesive surface for a long time, especially as described above. Adhesion of the protective panel to the display panel of a large display device such as a TV Wu, a volatile liquid, introduced into the central portion may be a long period of time left on the bonding surface without evaporating.

Therefore, when performing adhesion using such a volatile liquid, if the volatile liquid remains partially, the remaining portion of the volatile liquid and the portion from which the volatile liquid has been removed are visually confirmed, and the shape is not bad, and the optical at each part Differences occur in the characteristics and deterioration of the displayed image may occur.

To prevent the occurrence of such bubbles or to completely remove the water remaining on the adhesive surface, for example, a display panel after adhering the transparent protective panel is put in a pressure vessel and vacuum-adsorbed inside the pressure vessel to form a bubble or It is also conceivable to remove the water or to perform the adhesive work of the transparent protective panel itself under vacuum.

In this case, water and the like can be evaporated while maintaining the temperature of the display panel at a relatively low temperature, but the device configuration becomes large and requires a huge initial investment and damage to the display panel by placing under vacuum. There is a risk of giving.

In addition, if high visibility of the display device is to be ensured, the transparency of the transparent resin sheet itself, which becomes a buffer layer in place of the above air layer, is also required to be high, and the use of a viscoelastic material of acrylic resin as the resin also comes into view.

However, in an acrylic viscoelastic body, when this is adhere | attached to a protective panel, especially an acrylic protective panel, a fine bubble may generate | occur | produce. This phenomenon is caused by isocyanate, which is an uncrosslinked component such as toluene diisocyanate (TDI) and diphenyl methane diisocyanate (MDI), which is used as a crosslinking agent in an acrylic viscoelastic material, and a hydroxyl group of a protective panel (moisture contained in acrylic resin). The isocyanate group reacts with water to form carbamine, generating carbonic acid gas to form an amine. Bubbles are considered to be due to the carbon dioxide generated during this reaction.

Then, when the adhesiveness with the viscoelastic body of acrylic resin is also considered in the visual field in order to obtain the improvement of visibility, use of water for removing a bubble may become a cause of foaming rather.

In view of the above, the inventors of the present invention and the like attempt to use a low-molecular liquid gel containing a hydrophobic saturated fatty acid as a main component as a degassing aid for preventing air bubbles. did.

However, when using the above-mentioned liquid gel (10-100 cps as an example) which has a high viscosity compared with water (viscosity 1cps: 20 degreeC) as a degassing adjuvant, for example, as shown to FIG. 15 (A)-(C) A degassing aid is arrange | positioned in the center part of the surface of one panel (for example, display panel 200), and the other panel (for example, transparent protective panel 210) is superimposed on this, and both panels 200 are pressed. Although attempting to discharge the air while pushing the deaeration aid in the circumferential direction of (210), as shown in Fig. 15 (C), the deaeration aid to dry the air, do not completely discharge the air, preventing the generation of bubbles I could not. In particular, as the display panel to be processed increases in size, such bubbles are likely to occur.

In addition, once the bubbles are generated, the generated bubbles are difficult to move in the highly viscous degassing aid, and as described above, it is also difficult to carry out operations such as sweeping the bubbles toward the circumferential side of the panel by Hera or the like.

Therefore, even when such a viscous liquid is used as the degassing aid, a panel bonding method and a panel bonding apparatus capable of bonding without generating bubbles are required.

Moreover, although the example which adhere | attached the protective panel to the liquid crystal display panel was demonstrated above, when trying to adhere | attach a protective panel also to other display apparatuses, such as a plasma display, the same problem may arise.

The present invention has been devised to solve the above-mentioned drawbacks of the prior art, and uses a relatively high viscosity degassing aid to match a panel having a buffer layer made of a transparent viscoelastic material to one panel with a relatively simple configuration. In addition, even if it is carried out under atmospheric pressure, no bubble is generated, and a protective panel bonding apparatus capable of bonding the protective panel relatively easily to a large display such as a large screen TV, and a bonding method The purpose is to provide.

Means for solving the problems will be described below with reference numerals used in the embodiments for carrying out the invention. This code is intended to clarify the correspondence between the description of the claims and the description of the form for carrying out the invention, and needless to say, it is not limited to the interpretation of the technical scope of the present invention.

In order to achieve the above object, the panel bonding method of the present invention is a buffer layer made of a transparent viscoelastic material on one side of an adhesive surface of at least one of a display panel or a preferably transparent transparent protective panel bonded to the display panel. In the panel bonding method comprising the display panel and the transparent protective panel formed with a bonding object,

One end side 40a of the first panel 40, which is either one of the display panel or the transparent protective panel, and one end side 50a of the second panel 50, which is one side of the display panel or the transparent protective panel, are in contact with each other. Alternatively, the gas is disposed close to each other via the filling interval δ of the degassing aid, and the other end side 40b of the first panel 40 and the other end side 50b of the second panel 50 intervene at a predetermined interval. The first panel 40 is spaced apart so that the bonding surface of the first panel 40 and the bonding surface of the second panel 50 have a predetermined acute angle (20 ° in the illustrated example). The first and second panels 40 and 50 are disposed at an adhesion starting position (see FIG. 1 (C)) in which the second panel 50 is disposed on

The degassing aid having a viscosity of 10 to 100 cps between the first and second panels 40 and 50 is continuously introduced onto the first panel 40 so that the other end side of the second panel 50 ( 50b) is gradually brought closer to the other end side 40b of the first panel 40 so that the first panel 40 and the second panel 50 overlap each other through the degassing aid [ 1 (C), the second panel 50 is swung to perform bonding, and when the bonding is performed,

The first panel 40 is inclined so that the other end side 40b side of the first panel 40 is vertically upward in the horizontal direction, that is, the other end side 40b side faces upward. Let it be

The introduction of the degassing aid between the first and second panels 40 and 50 is started at the one end side 40a of the first panel 40 at the bonding start position, and the second As the other end side 50b of the panel 50 approaches the other end side 40b of the first panel 40, the introduction position of the degassing aid is changed to the other end side of the first panel 40. It is characterized by moving to 40b side (claim 1).

In the above panel bonding method, the inclination angle of the first panel 40 is preferably 4 ° or more. If the inclination angle is 4 ° or less, degassing is likely to be incomplete, and the lamination time is also two to three times (claim 2).

In addition, it is preferable to move the introduction position of the degassing aid between the long longitudinal center portion of the one end side 40a of the first panel 40 and the center portion of the other end side 40b (claim 3). ).

In this case, the state in which the center part C (refer FIG. 12, 13) side of the said 2nd panel 50 orthogonal to the said one end side 50a of the said 2nd panel 50 is made to bend down as it expands downwards is bent. It is also effective to rock the second panel 50 with the claim (claim 4).

The coating thickness of the degassing aid is 40 μm or more (claim 5), and 100 to 600 μm is preferable in order to obtain flow promotion of the degassing aid which is the degassing effect.

The viscoelastic material constituting the buffer layer is an acrylic resin or a urethane resin, and the thickness thereof is 10 to 1000 µm, and preferably 50 to 600 µm because of the fixing property. On the surface of the viscoelastic material, a V-shaped structure having a depth of 4 μm or less and a width of 8 μm or less may be formed at an interval of 0.5 to 3 mm, and at this time, The pattern may be perpendicular to the vertical direction and the horizontal direction. The degassing aid can be made into a low molecular liquid phase composed mainly of hydrophobic saturated fatty acids (claim 6).

In addition, the panel bonding apparatus of this invention used by the said panel bonding method is a transparent viscoelastic body to either one of the display panels of a display apparatus, or the hard transparent protective panel adhere | attached on the surface of the said display panel by one adhesive surface. In the panel bonding apparatus 1 used for adhesion | attachment of the said display panel and the said transparent protective panel in which the buffer layer which was formed was provided,

The first panel 40 which is either one of the display panel or the transparent protective panel is inclined so that the other end side 40b faces the upper side with respect to one end side 40a of the first panel 40. A mounting table 20 which can be mounted,

A holding frame 30 for holding the second panel 50 which is the other side of the display panel or the transparent protective panel;

One end side 40a of the first panel 40 and one end side 50a of the second panel 50 are placed close to each other by contact or through the filling interval δ of the degassing aid, and the first panel The other end side 40b of the 40 and the other end side 50b of the second panel 50 are separated through a predetermined interval, and the adhesive surface of the first panel 40 and the second panel 50 are separated. The bonding start position where the second panel 50 is disposed on the first panel 40 so that the adhesive surface of the second panel 50 is a predetermined acute angle (20 ° in the example shown), and the The other end side 50b is brought closer to the other end side 40b of the first panel 40 so that the first panel 40 and the second panel 50 pass through the degassing aid to complete adhesion. A holding edge holding mechanism 80 that pivotally holds the holding edge 30 between positions;

A holding edge rocking mechanism 90 for swinging the holding frame 30 from the bonding start position to the bonding completion position;

While spraying the degassing aid, the first panel 40 is mounted on the first panel 40 mounted on the mounting table 20 in accordance with the amount of swing of the holding frame by the holding frame rocking mechanism 90. It characterized in that the injection nozzle 60 is provided to move toward the other end side 40b from the one end side (40a) side of the (claim 7).

In the panel bonding apparatus 1 of the said structure, Furthermore, the mounting base 20 is a horizontal position which mounts the said 1st panel 40 horizontally, and the edge 40a of the said 1st panel 40 is carried out. It is preferable to provide a posture change mechanism 70 for changing the posture between inclined positions in which the other end 40b is inclined so as to face upward (claim 8).

In addition, it is preferable to arrange | position the said injection nozzle 60 so that it may move on the center line of the 1st panel orthogonal to the said one edge 40a of the said 1st panel 40 (claim 9).

In this case, when the retaining edge 30 is in the bonding start position, the central portion C of the second panel 50 forming the orthogonal direction with the one end side 50a of the second panel 50 is its own weight ( A holding mechanism for holding and holding the second panel may be provided on the holding frame so as to be bent in a state of expanding downward by self weight (claim 10).

Further, the holding edge 30 may be configured to be swingable between a ready position with the holding surface of the second panel 50 facing upward and the adhesion start position (claim 11).

According to the panel bonding method of this invention by the structure demonstrated above, the degassing adjuvant which has the viscosity of 10-100 cps under atmospheric pressure and the adhesion between the display panel and the transparent protective panel in which the buffer layer which consists of a transparent viscoelastic body was formed in either one was carried out. Even in the case of using, it was possible to prevent bubbles from occurring very suitably.

In particular, when the inclination angle of the first panel 40 was 4 ° or more, generation of bubbles could be prevented more reliably.

In the configuration in which the introduction position of the degassing aid is moved from the long longitudinal center side of the one end side 40a of the first panel 40 toward the center side of the other end side, the degassing aid is introduced along the swing of the second panel. The degassing aid is not only pushed from one end side 40a, 50a side of the first and second panels 40, 50 to the other end side 40b, 50b side, but also pushed out from the center side toward both end sides in the width direction. The action was also added, and the air could be pushed out very suitably.

Particularly, in addition to the introduction position of the degassing aid, the second panel 50 is rocked in a state in which the center C, which is perpendicular to the one end side of the second panel 50, is swelled downward. In the second panel 50, the second panel 50 is placed on the first panel 40 so that the warpage of the second panel is eliminated and returned to a flat shape. The pushing-out action to the side could be exhibited more suitably.

In addition, when the viscoelastic body constituting the buffer layer is made of acrylic resin and the degassing aid is a low-molecular liquid phase composed mainly of hydrophobic saturated fatty acids, no bubbles are generated due to the carbonic acid gas described above. After finishing, the degassing aid is absorbed into the buffer layer and gelated to obtain a very suitable adhesive force between the first and second panels 40 and 50, and there is no structural cut between the buffer layer and the degassing aid. The optical properties on the display surface of the device could be further improved.

Moreover, in the panel bonding apparatus of this invention, the panel bonding method of this invention mentioned above was comparatively easy with the said structure.

In particular, in the configuration in which the posture change mechanism for changing the posture between the mounting table and the inclined position that enables the inclined placement of the first panel 40 is provided, the first panel 40 is inclined. After the two panels are adhered to each other, the posture of the mounting table is changed to a position where the first panel 40 is horizontal, so that the second panel 50 is held by the holding frame 30 before the degassing aid is cured. Even in the case of releasing, it was also possible to prevent the problem that the position difference between the two panels occurred due to the sliding of the second panel 50 along the inclination due to gravity.

Moreover, in the structure which made the holding | maintenance edge 30 rockable between the preparation position which faced the storage holding surface of the said 2nd panel upward, and the said adhesion | attachment start position, it is made on the holding edge 30 in a preparation position. Installation work can be performed in the state which mounted 2 panel 50, and the installation operation of the 2nd panel 50 with respect to the holding | maintenance edge 30 was easy to perform.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing of the panel sticking method of this invention, (A) is a formation example of the buffer layer performed as a preliminary preparation, (B) is the state which made two panels made into the adhesion object into the adhesion start position, (C ) Indicate a state in which the end of adhesion is set.
Fig. 2 is a schematic diagram explaining the cause of bubbles and a method of eliminating them, and (A) and (B) are explanatory diagrams of whether bubbles are generated in accordance with the movement of a degassing aid introduction position, and (C) and (D). Is an explanatory diagram of the presence or absence of bubbles in accordance with the presence or absence of the inclination of the first panel.
3 is a plan view of the panel bonding apparatus.
4 is a front view of the panel bonding apparatus.
5 is a side view of the panel bonding apparatus.
6 is a perspective view of a panel bonding apparatus.
7: (A) which is a mounting stand and the holding | maintenance edge swing mechanism, is a top view, (B) is a perspective view seen from the surface side, (C) is a perspective view seen from the bottom face side.
8 is a perspective view of a holding frame;
9 is a schematic front view of a vacuum suction pad (panel holding mechanism of holding frame).
Fig. 10 is a flow diagram explaining a preparation step up to the start of bonding;
FIG. 11 is a flow chart illustrating the process from adhesion start to adhesion completion. FIG.
Fig. 12 is an explanatory diagram of the principle of warpage in the second panel in the panel holding mechanism (vacuum suction pad) of the holding edge;
FIG. 13 is an explanatory diagram illustrating enlargement of a degassing aid according to the shaking of a second panel; FIG.
14 is an explanatory diagram of a bonding state of a protective panel to a display panel (conventional).
15 is an explanatory diagram of an example of generation of bubbles when a highly viscous degassing aid is used.

EMBODIMENT OF THE INVENTION Below, the preferred embodiment of this invention is described, referring an accompanying drawing.

In addition, in the following embodiment, although the case of bonding the liquid crystal cell (display panel) and a transparent protective panel of a liquid crystal display to the panel adhesion method and panel adhesion apparatus of this invention is demonstrated as an example, the application range of this invention is a liquid crystal. It is not limited to a display, For example, it can apply also when bonding a transparent protective panel to other display apparatuses, such as a plasma display.

[Overview of Panel Bonding Method]

As described above, in the panel bonding method of the present invention, when bonding a transparent protective panel to a display panel such as a liquid crystal display, a buffer layer made of transparent viscoelastic material is provided instead of the air layer that has been provided for buffering. A bonding method for bonding both panels, wherein a bonding layer formed of a transparent viscoelastic material is formed on one bonding surface of either the display panel or the rigid transparent protective panel bonded to the display panel in advance. .

Such a buffer layer may be formed by any method, and the method is not particularly limited. However, in this embodiment, as an example, the length of two transparent viscoelastic films corresponding to the size of the panel to be bonded is the length. It is formed by bonding to a transparent protective panel, as shown in FIG. 1 (A), sandwiching between the long separator films, winding this in roll shape, and pulling out this roll.

In this embodiment, although the buffer layer is formed in the transparent protective panel side using the viscoelastic body of acrylic resin for formation of this buffer layer, this buffer layer is not limited to acrylic resin, Various existing viscoelastic bodies are existing In addition, the buffer layer may be formed on the display panel side without being limited to the case where the buffer layer is formed on the transparent protective panel side.

In addition, a V-shaped structure having a depth of 4 μm or less and a width of 8 μm or less as a degassing aid passage on the surface of the viscoelastic material is pressed at a distance of 0.5 to 3 mm with a scar or a suitable jig. Form. This structural pattern can be perpendicular to the vertical direction and the horizontal direction.

As described above, after the buffer layer is formed on either side of the display panel or the transparent protective panel, the display panel is adhered to the transparent protective panel.

Bonding is one of the said display panel or a transparent protective panel, and one side is made into the 1st panel 40, and this 1st panel 40 is made to the other end side 40b with respect to one end side 40a, and a horizontal direction is carried out in a horizontal direction. As shown in FIG. 1 (B) such that the other end side 40b side of the upper side, ie, the other end side 40b, faces upward, the inclination angle of 4 ° or more is arranged at an inclination angle of 20 ° in the illustrated embodiment.

On the first panel 40, the second panel 50, which is one of the display panel or the transparent protective panel, is placed on one end side 40a of the first panel 40 and the second panel 50. The other end side 40b of the said 1st panel 40 and the said 2nd panel (in the state which contact | connected the one edge 50a or the state arrange | positioned closely through the filling interval (delta) of the degassing aid mentioned later The other end side 50b of 50 is spaced apart through a predetermined interval, and the adhesive surface of the first panel 40 and the adhesive surface of the second panel 50 have a predetermined acute angle (20 ° in this embodiment). It is arrange | positioned to the position (adhesion start position) which becomes).

In addition, the first degassing aid having a viscosity of 10 to 100 cps between the first and second panels 40 and 50, and in this embodiment, a low-molecular liquid phase composed mainly of hydrophobic saturated fatty acids as the main component is used as the first panel 40. The other end side 50b of the 2nd panel 50 is gradually brought into the other end side 40b of the said 1st panel 40, and the 2nd panel is rocked, and finally, it introduces into FIG. As shown in C), the first panel 40 and the second panel 50 oscillate to the bonding completion position overlapping each other through the degassing aid.

At this time, introduction of the degassing aid between the first and second panels 40 and 50 is performed at the one end side 40a of the first panel 40 at the bonding start position (see FIG. 1 (B)). Starting from the side), the other end side 50b of the second panel 50 is brought closer to the end side 40b of the first panel 40, so that the introduction position is the first panel 40. To the other end side 40b of the side.

As described above, the degassing aid introduced on the first panel 40 is squeezed by the second panel 50 while the second panel 50 is bonded while rocking the first panel (with air). It is pushed toward the other end side 40b side of 40, and air is discharged.

In this case, considering the cause of the air bubbles, air bubbles are dried in such a way that air escapes by contacting the degassing aid and the adhesive surface of the panel before the air existing between the panels 40 and 50 is discharged. Caused by losing.

Therefore, as in the configuration of the present invention described above, only the configuration in which the second panel 50 is slowly swinged from the adhesion start position to the adhesion completion position is employed, and for example, the adhesion is performed without moving the introduction position of the degassing aid. If the degassing aid is applied to the surface in advance, as shown in Fig. 2 (A), the runaway path of the air may be blocked by the degassing aid due to the irregularities generated on the surface of the highly viscous degassing aid, It is difficult to completely prevent it from rolling in.

However, in the present invention, as described above, by adopting a configuration in which the second panel 50 is slowly rocked and adhered to the first panel 40, a configuration for additionally moving the introduction position of the degassing aid is shown in FIG. As shown in B), there is still no degassing aid in the front direction (right side of the drawing) in the direction of degassing aid or air, and as a result, there is no blockage of the air escape path by the degassing aid. Bubbles can be prevented from occurring on the principle described with reference to FIG. 2 (A).

In addition, when unevenness | corrugation arises, for example in the adhesive surface of the 2nd panel 50, for example, the surface of the buffer layer provided in the 2nd panel, as shown in FIG.2 (C), of the said 2nd panel 50 Even in the case where bonding is performed by combining the swinging motion and the movement of the introduction position of the degassing aid, when the adhesion is performed while the first panel 40 is in a horizontal state, the degassing aid is formed on the first panel 40. When piled up, the lower opening edge of a convex part may be blocked, and air in a convex part may not be discharged.

However, in the method of the present invention, as shown in Fig. 2D, in addition to the above-described configuration, since the adhesion is performed in a state in which the first panel 40 is inclined, the adhesive surface of the second panel 50 is attached. Even if there is a space where air can accumulate due to unevenness, air can be driven out of the space and escape upward when the degassing aid fills the gap between the first and second panels 40 and 50, Even in such a situation, it is difficult for air to get in.

[Panel Bonding Device]

The panel bonding method of this invention demonstrated above can be implement | achieved by the panel bonding apparatus 1 of this invention provided with the following structures as an example.

Overall composition of the panel bonding device

3-6, the code | symbol 1 is the panel bonding apparatus of this invention for bonding the transparent protective panels, such as a glass plate and an acryl plate, adhere | attached to the display panel of a liquid crystal display device, and the display surface of the same display panel, This panel The bonding apparatus 1 is equipped with the frame 10 which is the support structural member of each structural member, and the mounting base 20 provided on this frame 10, and is mounted on the mounting base 20 at the same time. Either of the display panel or the transparent protective panel to be bonded is bonded to the first panel (display panel in the illustrated embodiment) 40 which is one of the second panel (the other side of the display panel or the transparent protective panel). In the embodiment, a degassing aid having a viscosity of 10 to 100 cps is introduced between the holding frame 30 for holding the transparent protective panel) 50 and the first and second panels 40 and 50 to be bonded. Spray nozzle 60) and, in addition, a mechanism necessary to perform the operation required for each of these parts is provided.

frame

The above-mentioned frame 10 may be any structure as long as it enables the predetermined arrangement and installation of the component which is the panel bonding apparatus 1 of this invention, but in the embodiment of illustration, as an example, the metal beam material ( The frame 10 is formed as a frame formed by combining beams.

In the illustrated embodiment, on the frame 10, a mounting table 20 is mounted to the second panel 50 with respect to the bonding work portion 11 for carrying out the bonding work of the panel and the holding edge 30 described later. The preparation work part 12 which performs the installation work of ()) is formed, In the embodiment of illustration, it prepares by connecting the beam material which comprises the preparation work part 12 through the hinge 13. The part 12 is comprised so that it may be folded when it is unnecessary (refer FIG. 4).

Wit

On the said bonding work part 11 of the frame 10, the mounting base 20 which mounts the said 1st panel 40 is provided.

The mounting table 20 is provided with a positioning piece 21 or the like on the mounting surface of the first panel 40 so that the first panel 40 can be accurately placed at a predetermined position on the mounting table 20. 3 and 6, in the present embodiment, the other end side 40b of the first panel 40 is placed in contact with the positioning piece 21 to be placed at the correct position on the mounting table 20. It is comprised so that the 1st panel 40 may be arrange | positioned.

The positioning piece 21 can vary its installation position corresponding to the size of the first panel 40 determined by the number of inches of the display panel to be bonded. It is desirable to.

As shown in the enlarged view in FIG. 4, one end side 20a side of the mounting table 20 slides on the bonding work part 11 of the frame 10 via a support shaft 22 so as to be able to swing. As shown in Fig. 2, the position of the mounting table 20 is inclined so as to be inclined with the other end 20b side facing the upper side facing the upper side as shown in FIG. It is configured to swing to a horizontal position parallel to the surface of the frame 10 and at the same time, the mounting table 20 is oscillated and placed on the mounting table 20, and thus the mounting table 20. The posture change mechanism 70 (refer FIG. 5, 6) which changes the attitude | position of the 1st panel 40 is provided.

Posture change mechanism

The posture change mechanism 70 which changes the posture of the said mounting base 20 is a mounting base 20 from the position (0 degree) which makes the posture of the mounting base 20 parallel with the upper surface of the frame 10. The other end side 20b side of the head) is inclined at a predetermined angle (up to 20 ° in this embodiment) while fixing the posture of the mounting table 20 at each position. As long as it can be, what kind of structure may be sufficient.

In this embodiment, as this posture change mechanism 70, the X-shaped arm 71 and the handle which pivoted the intermediate position of the two beams 71a and 71b so that rotation was possible by the support shaft 71c are possible. 72 and screw rods (not shown) which rotate in accordance with the rotation of the handle 72 to change the spacing between the lower ends of the beams 71a and 71b of the X-shaped arm 71. The whole of the X-shaped arm 71 is comprised by changing the space | interval between the lower ends of the beams 71a and 71b which comprise the said X-shaped arm 71 by rotating the said handle 72. As shown in FIG. The height is changed and the back surface is pushed up or lowered on the other end side 20b side of the mounting table 20 by the upper end of the X-shaped arm 71. The attitude | position of the mounting base 20 can be changed in the range.

Keep border

The second panel (transparent protective panel in the present embodiment) 50 bonded to the first panel (display panel in the present embodiment) 40 placed on the mounting table 20 configured as described above is stored. In the present embodiment, the holding edge 30 to be held is a lattice-shaped support rod 32 and a reinforcement rod in a frame 31 woven in a rectangular shape as shown in FIG. 8. Iii) having a structure in which 33 is provided, and the second panel 50 can be held by providing the vacuum suction pad 34 shown in FIG. 9 at a predetermined position of the support rod 32. have.

Therefore, in the structure shown, the holding mechanism of the 2nd panel 50 is formed by the group of the vacuum suction pads 34 mounted in multiple numbers by predetermined | prescribed arrangement.

The degassing hole 34a of the vacuum suction pad 34 is connected to the vacuum pump 38 via a hose or the like not shown, and is sucked by the vacuum pump 38 to an effective material such as rubber. The air in the skirt portion 34b formed by the air is sucked in. The suction by the vacuum pump 38 is applied while the skirt portion 34b is pressed against the surface opposite to the adhesive surface of the second panel 50. By carrying out, the second panel 50 can be adsorbed and held.

This holding | maintenance edge 30 is a 2nd holding edge holding mechanism 80 provided on the adhesion | attachment work part 11 of the preparation work part 12 side as shown in FIG. 4 and FIG. 6 in this embodiment. With the installation surface of the panel 50 facing upwards, the preparation position mounted on the said preparation work part 12, the adhesion start position shown in FIG. 4, and from the said adhesion start position toward the mounting base 20. FIG. The oscillation is allowed to oscillate to the bonding completion position where the adhesion of the first panel 40 and the second panel 50 is completed.

In the illustrated embodiment, the first support shaft 82 is provided with respect to the base 81 and the base 81 provided in the frame 10 as the storage mechanism 80 of the holding edge 30 described above. A connecting arm 83 interposed so as to pivot one end so as to be oscillated; By swinging the end portion of the end portion so as to be able to swing, the holding edge 30 is rocked with the connecting arm 83 around the first support shaft 82 to move the holding edge 30 from the ready position to the adhesion start position. At the same time, the holding edge 30 can swing from the bonding starting position to the bonding ending position due to the swinging of the holding edge 30 around the second axis 84.

Maintenance rim rocking mechanism

When the holding edge 30 is rocked around the first support shaft 82, the holding edge 30 is positioned at the above-mentioned bonding start position, that is, at one end side 20a of the mounting table 20. Filling of the degassing aid or contacting one end side 40a of the arranged first panel 40 and one end side 50a of the second panel 50 arranged on one end side 30a side of the holding edge 30. In the state of being closely arranged through the interval δ, the bonding surface of the first panel 40 and the adhesion of the second panel 50 are separated from each other between the other end sides 40b and 50b of both panels 40 and 50. The holding edge 30 is swung in the clockwise rotation direction in FIG. 4 from the state placed on the preparation work part 12 so that the surface can be positioned at a predetermined acute angle (20 ° in the example shown). If it is, the roller-shaped protrusion 35 (refer FIG. 8) provided in the other end side 30b side of this holding | maintenance edge 30 raises and lowers provided in the holding | maintenance edge rocking mechanism 90. 93. [Fig. 7 (B), (C) Reference is placed on and is able to maintain the holding rim (30) to the start position of bonding.

The holding edge rocking mechanism 90 swings the holding frame 30 between the above-described bonding start position and the bonding end position, so long as it is possible to cause the retaining edge 30 to perform this operation. You can do it.

In this embodiment, as shown to FIG.7 (B), (C), the guide rail 91 which has the longitudinal direction of the mounting table 20 in the orthogonal direction with respect to the mounting table at the symmetrical position in the width direction of the mounting base 20 mentioned above. , 91 are disposed, and elevating plates 92 and 92, which are lifted and moved along the guide rails 91 and 91, are respectively provided, and one lifter is placed on the upper ends of the elevating plates 92 and 92, respectively. The plate-shaped plate body was pushed toward the steel plate side, and it was set as the lifting platform 93 which mounts the protrusion 35 provided in the holding | maintenance edge 30. As shown in FIG.

And while connecting the lower end of the elevating plate (92, 92) on the back side of the mounting table 20 with a crosslinking plate 94, and at the back side of the mounting table (20) the guide rail ( The piston rod 96a of the pneumatic cylinder 96 provided in the bridge bridge 95 is also connected by the bridge bridge 95 between the lower ends of the bridges 91 and 91, respectively. In order to control the introduction and discharge of the compressed air to the pneumatic cylinder 96, the lifting platform 93 can be lifted and connected.

Therefore, the lifting platform 93 is moved up and down in this manner, thereby making it possible to swing the holding frame 30 via the protrusion 35 placed on the lifting platform 93.

In addition, in this embodiment, the lifting edge 93 detects the position of the lifting platform 93 by using the position sensor not shown in this holding edge rocking mechanism 90 which detects that the above-mentioned lifting platform 93 is in the upper limit movement position and the lower limit movement position. It is installed as a means.

The position sensor may be configured to directly detect the position of the platform 93 or, for example, to detect the advance / rear position of the piston rod of the pneumatic cylinder 96, or the like. The position of may be detected.

In addition, in FIG. 4, FIG. 6, the code | symbol 97 is a speed controller, and in this embodiment, the rotation speed of the holding | maintenance edge 30 is adjusted by operating the speed adjustment knob provided in this speed controller 97. In addition, in FIG. Can be.

Spray nozzle

As shown to Fig.7 (A), (B), on the surface of the said mounting base 20, the edge 20c which makes an orthogonal direction with respect to one edge 20a and the other edge 20b of the said mounting base 20. Parallel to and 20d, guide rails 23 and 23 are provided, respectively, and a pair of sliders 24 and 24 guided by the guide rails 23 and 23 and moving on the mounting table 20 It is installed.

This pair of sliders 24 and 24 are connected by the connection between 25, and the deaeration aid supplied from the tank 61 (refer FIG. 3-6) to the intermediate position of this connection between 25 is shown. Is mounted on the first panel 40.

These sliders 24 and 24 are guided by the rotation of a motor (not shown) or the like by a power transmission mechanism such as a chain, a sprocket, a pulley, and a pulley belt. , 23) is configured to be able to move the image, whereby the above-described injection nozzle 60, the center position in the width direction of the mounting table 20, one end side 20a of the mounting table 20 ) Side and the other end 20b side.

This nozzle 60 is arrange | positioned toward the one end side 20a side of the mounting base 20, and the holding | maintenance edge 30 swings from the adhesion start position toward the adhesion end position, as mentioned above. As the space | interval between the 1st panel 40 and the 2nd panel 50 becomes narrow, it moves so that it may move toward the direction opposite to the injection direction of the degassing aid (the other end side 20b side of the mounting base 20).

In addition, the injection nozzle 60 may be provided with an injection port formed in a cylindrical shape, or may be provided with an injection port having a shape that widens the aperture toward the front side in the injection direction, and is desired on the first panel 40. As long as it can supply the degassing aid of the quantity, the form can be variously formed and employ | adopted.

Above all, in the case where the first and second panels 40 and 50 to be bonded are relatively large, etc., the injection nozzle 60 having the injection hole for expanding the aperture toward the tip is used. For example, the introduction range of the degassing aid may be expanded in the width direction of the first panel 40.

In addition, in this embodiment, the slider 24 located in the position corresponding to the movement start position P1, the injection end position P2, and the movement end position P3 of the injection nozzle 60 shown to FIG. 7 (A). ), The light is directed toward the guide rails 23 at both ends in the longitudinal direction of the guide rails 23 and at the intermediate positions (the positions corresponding to the arrangement positions of the other end sides 40b of the first panel 40). By the electronic control apparatus which provides a position detection means (not shown), such as a sensor and a magnetic sensor, and detects this when the slider 24 reaches each said position, the detection signal of this position detection means is mentioned later. It is used at the time of control.

In this case, about the sensor which detects the said injection end position P2, the position is provided so that a movement is possible corresponding to size change of the 1st, 2nd panels 40 and 50 made into the object of adhesion | attachment.

etc

5 is a vacuum pump connected to each vacuum suction pad 34 provided in the said holding | maintenance edge 30 by the air circuit which is not shown in figure, and the rubber | gum provided in the vacuum suction pad 34 is shown. When the vacuum pump 38 is driven in a state in which the skirt portion 34b formed of an effective material such as or the like is brought into contact with the surface on the side opposite to the adhesive surface of the second panel 50, the holding edge 30 The second panel 50 can be adsorbed and stored.

In addition, in the air circuit not shown in communication between the vacuum pump 38 and the vacuum suction pad 34, even after the vacuum pump 38 is stopped, a predetermined time or until a predetermined operation is performed, A safety device for maintaining the adsorption state of the second panel 50 by the vacuum suction pad 34 is provided, and the vacuum suction pad 34 is prevented even by the unexpected stopping of the vacuum pump 38, for example. It is preferable to configure such that the second panel 50 held on the holding frame 30 can prevent the occurrence of an accident, such as falling, without losing the holding force immediately.

Moreover, even if the pressure sensor, a pressure switch, etc. which are not shown which detect the pressure in the said circuit are provided in the same circuit, even if the vacuum pump 38 is turned ON, until the pressure in a circuit becomes a predetermined negative pressure, That is, until the adsorption of the second panel 50 is performed reliably, the operator may be warned not to perform subsequent operations by lighting of a warning light or generating a warning sound.

3-6, the code | symbol 100 is a control panel, Comprising: It is comprised so that the start, stop, etc. of this panel bonding apparatus 1 can be performed by operation of the switches provided in this control panel.

The control panel 100 includes, for example, switches for changing the various settings, for example, adjusting the operation speed of each part according to the size change of the panel to be bonded, adjusting the supply amount of the bonding aid, and the like. In addition, an error display, for example, the warning that the suction negative pressure of the said 2nd panel did not become predetermined | prescribed pressure, you may comprise so that display of the pressure itself etc. may be given.

[How to use and operation, etc.]

Adhesion of the panel using the panel bonding apparatus 1 of this invention comprised as mentioned above is performed as follows as an example.

Preliminaries

When the display panel and the transparent protective panel are set to the panel bonding apparatus 1 of the present invention, when the holding edge 30 is at, for example, the bonding start position or the bonding end position, the frame 10 is oscillated. It is made to move to the position (preparation position) mounted on the preparation work part 12 of this.

In addition, when necessary, for example, when changing the size of the panel to be processed, the installation position of the vacuum suction pad 34 is moved so as to cope with the size change.

In addition, when the positioning piece 21 etc. are provided in the surface of the mounting base 20, it moves the installation position of the positioning piece 21 similarly to the size of a panel as needed, and also sprays In the case where a sensor is provided as the position detecting means of the nozzle, the position of the sensor which detects that it is in the injection end position P2 (positioning position of the other end side of the first panel) among these corresponds to the size of the panel. Move it.

In addition, when the mounting base 20 is in inclined state, the handle 72 is rotated and the mounting base 20 is returned to a horizontal state.

Glue Ready

As described above, after the preliminary preparation is completed, adhesion preparation is performed according to the flow shown in FIG.

When bonding, first, the first panel (display panel in the present embodiment) 40 is placed on the mounting table 20, and the second panel (in the present embodiment) is mounted on the holding edge 30. , Transparent protective panel) 50 is mounted (STEP1).

Here, any of the above-described display panel and the transparent protective panel may be the first or the second panel, and is not particularly limited.

Above all, when the first panel 40 placed on the mounting table 20 is a transparent protective panel and the second panel held by the holding frame 30 is a display panel, The degassing aid overflowing from the periphery has a merit that it is difficult to contaminate the substrate, the wiring, etc., which are provided at the periphery of the display panel disposed on the upper side. ) Is used as a display panel, and when the second panel 50 held by the holding frame 30 is a transparent protective panel, whether or not bubbles are generated through the transparent protective panel at the time of adhesion and after completion of adhesion. There is a merit that occurrence of adhesion failure can be easily confirmed.

Therefore, after evaluating these items, you may decide which one is the first or second panel.

After placing the first panel 40 relative to the mounting table 20, the handle 72 of the posture change mechanism 70 is rotated so that the placed first panel is inclined at 4 ° or more, in this embodiment. The mounting table 20 is inclined to incline at an angle of 20 degrees.

When the first and second panels 40 and 50 are mounted as described above, the vacuum pump 38 is started by operating the switch provided in the controller 100, for example (STEP2). , An electronic control device installed in the control panel 100, for example, based on a detection signal from an unillustrated pressure sensor installed in an unillustrated air circuit provided between the vacuum pump 38 and the vacuum suction pad 34. A judges whether or not the pressure in the circuit is in a predetermined vacuum state (STEP3).

In addition, this determination may be performed after the built-in timer counts for a certain time, for example, after starting the vacuum pump 38.

If the electronic controller determines that the pressure in the air circuit is not in a predetermined vacuum state (No) based on the detection signal from the pressure sensor, the vacuum pump 38 is stopped (STEP4), for example. For example, the operator is warned by turning on a warning lamp provided on the control panel 100 or the like.

Based on this warning, the operator checks, for example, whether or not the second panel 50 is correctly placed on the vacuum suction pad 34, and the mounting position and vacuum suction of the second panel 50, if necessary. After adjusting the installation position etc. of the pad 34, the vacuum pump 38 is driven again by operating the switch provided in the control panel 100, etc. (STEP2).

If it is determined that the pressure in the air circuit has reached a predetermined vacuum state (Yes of STEP3), the electronic control apparatus is provided with a detection signal from the above-described injection nozzle position detecting means constituted by a sensor (not shown) and the lift table position detecting means. On the basis of this, it is judged whether or not the injection nozzle 60 is at the movement end position P3 (STEP5) and whether the platform 93 is at the upper limit position (STEP7). Until it is detected that 60 has reached the movement end position P3, the injection nozzle 60 is moved toward the movement termination position (STEP6), and it is detected that the lifting platform 93 has reached the upper end position. The platform 93 is moved to the upper position until it reaches (STEP8).

When it is judged as above that each part exists in predetermined state or position, the electronic control apparatus informs an operator of completion of work preparation by display means, such as a light indicator installed in the control panel 100, for example, The operator who confirmed this display maintains the holding | maintenance edge storage mechanism 80 until the roller-shaped protrusion 35 which installed the holding | maintenance edge 30 in the holding | maintenance edge 30 touches and mounts on the surface of the platform 93. As shown in FIG. The holding edge 30 is rocked around the first support shaft 82 provided at the center.

Thereby, the holding | maintenance edge 30 is the very small which the one edge 40a of the 1st panel 40 and the one edge 50a of the 2nd panel 50 contacted, or the filling interval (delta) of a degassing aid. In a state in which the first panel 40 is disposed close to each other, the other end side 40b of the first panel 40 and the other end side 50b of the second panel 50 are spaced apart through a predetermined interval, and thus, the first panel. The bonding surface of the 40 and the bonding surface of the second panel 50 are disposed at the bonding start position forming a predetermined acute angle (20 ° in the present embodiment) (STEP9).

Moreover, in the structure of the said holding | maintenance edge 30 which made the suction and hold | maintain the 2nd panel 50 by the vacuum suction pad 34, the 2nd panel is carried out by the skirt part 34b of the vacuum suction pad 34. FIG. If the 50 is kept in a suspended state, the skirt portion 34b of the vacuum suction pad 34 formed of an effective material such as rubber is stretched slightly downward due to the weight of the second panel 50.

At this time, in the structure shown in the figure which adsorb | sucked the vicinity and center part of the width direction both ends of the 2nd panel 50 by the vacuum suction pad 34, as shown in FIG. 12, the vacuum suction pad 34 arrange | positioned at the center is When the supporting load is the largest and the elongation of the skirt portion 34b is larger than that of the other vacuum suction pads 34, and the second panel 50 is large, the second panel 50 is caused by its own weight. The center part is swollen as if it swelled downward.

Adhesive work

The operation after rocking the holding edge 30 to the bonding start position is described as above, with reference to FIG. 11.

After the holding edge 30 is swung to the bonding start position, when the operator commands the bonding start by operating a switch provided on the control panel 100, the electronic control device determines that the injection nozzle 60 is shown in FIG. The nozzle 60 is moved toward one end side 20a side of the mounting table 20 until the injection nozzle position detecting means detects that the movement has started to the movement start position P1 indicated in A) (STEP10, 11). ), The movement of the nozzle is stopped by the reception of the detection signal from the nozzle position sensor, and the compressed air from a compressor (not shown) is introduced into the preparation tank 61 and sprayed. Injection of the degassing aid is started through the nozzle 60 (STEP12).

At this time, from the start of introduction of the degassing aid, the nozzle 60 is held at the movement start position P1 without starting the movement of the nozzle 60 for a predetermined time (STEP13), and the movement start position P1 is adjusted. First, the movement of the nozzle 60 may be started from the state in which the degassing aid accumulates to some extent between the second panels 40 and 50.

After the elapse of the above-described set time, the nozzle 60 starts moving toward the other end side 20b of the mounting table 20 while spraying the degassing aid (STEP14). The lifting platform 93 provided on the holding edge swing mechanism 90 starts lowering by the pneumatic cylinder 96 (STEP15), and the holding frame 30 moves on the second support shaft 84 in accordance with the lowering of the lifting platform 93. By oscillating in the clockwise rotation direction in FIG. 4 with respect to Fig. 4, the second panel 50 is configured to adjust the distance between one end side 40a, 50a of both panels 40, 50 at a very small interval necessary for filling the degassing aid. While holding, the other end side 50b is moved closer to the other end side 40b of the first panel 40 so that the angle formed between the adhesive surfaces of the first panel 40 and the second panel 50 is more acute. To change.

By this operation, the degassing aid introduced on the first panel 40 is pushed toward the other end side 40b of the first panel 40 together with air by being pressed by the second panel 50 and crushed. The generation of bubbles is prevented.

As described above, when the above-described vacuum suction pad 34, which is a holding mechanism of the second panel 50 provided on the holding frame 30, is arranged to suspend the second panel 50 downward, In the case where the second panel 50 is held as if the central portion C in the width direction of the second panel 50 swells downward, the second panel 50 is first moved due to the swing of the holding frame 30. After approaching the surface of the first panel 40 in the width direction center part C of the 2nd panel, and this part superimposed on the 1st panel 40 through a degassing aid, very little later to this, As shown in FIG. 13, the air between the first and second panels 40 and 50 together with the degassing aid, so that both end sides in the width direction of the panel 50 are close to the first panel 40. An action such as pushing out air together with a deaeration aid from the center side of the width direction toward both end sides of the width direction is applied. Since, generation of bubbles can be still more difficult to occur.

In the manner described above, bonding is performed while the injection nozzle 60 is moved in conjunction with the swing of the holding edge 30, so that the nozzle 60 is located at or near the other end 40b of the first panel 40. FIG. If the injection nozzle position detecting means detects that the injection nozzle 60 has moved to the injection end position P2 of the adhesive shown in Fig. 7A set to (A), then the electronic control The apparatus stops the introduction of the compressed air to the preparation tank 61, and finishes the injection of the degassing aid by the injection nozzle 60 (STEP 17).

The injection nozzle 60 continued to move to the other end side 20b side of the mounting table 20 even after the injection of the degassing aid was completed and moved to the predetermined movement end position P3 by the injection nozzle position detecting means. If it continues to move until it is detected (STEP18), and it is detected by the injection nozzle position detecting means that it moved to the predetermined movement end position P3 (Yes of STEP18), the electronic control apparatus of the injection nozzle 60 Stop movement (STEP19).

When the injection nozzle 60 moves to the movement end position P3, the holding edge 30 moves the other end side 40b of the first panel 40 with respect to the other end side 50b of the second panel 50, Even if it swings to a position close to a small gap, which is the filling interval of the degassing aid, the interference between the first and second panels 40 and 50 and the holding frame 30 and the spray nozzle 60 is prevented from occurring. In this way, after the injection nozzle 60 moves to the movement end position P3 and retracts at the interval between the first and second panels 40 and 50, the electronic control apparatus uses a lifting table position detection means. The lowering of the platform 93 is continued by the holding edge rocking mechanism 90 until it detects that 93 has reached the lower limit position (STEP20), and the holding edge rocking mechanism 90 is received by receiving the detection signal of the same sensor. The lowering of the lifting platform 93 is stopped (STEP21).

When the platform 93 of the holding frame rocking mechanism 90 descends to the lower limit position, the holding frame 30 moves to the bonding end position, whereby the first panel 40 and the second panel 50 are moved. ) Is terminated.

In this way, after the adhesion is completed, the operator operates the handle 72 of the posture change mechanism 70, swings the mounting table 20 to a horizontal position, and is installed in the control panel 100 described above. By operating a switch or the like, the suction of the second panel 50 by the vacuum suction pad 34 is released.

In this way, after returning the posture of the mounting base 20 to a horizontal state, the state which floated on the deaeration aid of an unhardened state by releasing the holding of the 2nd panel 50 by the holding | maintenance edge 30 is carried out. The second panel in the furnace can be prevented from slipping over the first panel to make a difference.

The degassing aid sandwiched between the adhesive surfaces may be sealed between the adhesive surfaces as a gel-like liquid by encapsulating the periphery of the panel without curing it depending on the material thereof, or the whole or partial ( For example, it may be made to harden to a panel peripheral part).

As described above, when using a viscoelastic material of an acrylic resin as the viscoelastic material constituting the buffer layer and using a low molecular liquid phase containing hydrophobic saturated fatty acid as a main component as the degassing aid, the degassing aid buffer layer is about 15 minutes after adhesion. Absorption starts, and the degassing aid gels by being left for about 60 minutes to obtain a very suitable adhesive force between the first and second panels 40 and 50, and there is no structural cut between the buffer layers. The larger improvement of the optical characteristic in the display surface of a display apparatus can be obtained.

In this case, if the elapsed time after adhesion is within 15 minutes, it is possible to peel off between the first and second panels 40 and 50, and even in the case where a position difference or the like occurs during adhesion, an expensive display panel or transparent protection The panel does not become obsolete and the commercialization rate is good.

Accordingly, the following claims do not refer to an apparatus, device, machine, apparatus, process, or method constituted solely by the specific means disclosed herein. The above claims are intended to protect the core or the essence of this breakthrough invention. The present invention is clearly novel and useful.

In addition, at the time this invention was made, this invention is not clear to the person skilled in the art, and in view of the characteristic which brings about great revolution of this invention, this invention is clearly pioneered in the said technical field. Invention. As a legal matter, in order to protect the essential point of the present invention, the following claims should be interpreted extremely broadly.

Therefore, since the objective identified from the above-mentioned description mentioned above is efficiently achieved and a change to some extent can be made in the said structure, without deviating from the range of this invention, it is contained in the said description or attached drawing. All contents are intended to be interpreted by way of example, not in a limiting sense. The following claims are intended to cover all the inclusive and inherent features of the invention described herein, and as language matters, all other expressions of the scope of the invention fall within the scope of the claims. I want to understand what I can say.

1 panel bonding device
10 frames
11 Adhesive Workpiece
12 Preparation Work Department
13 hinge
20 wit
20a One end side (base)
20b other end
20 c, 20 d end (base)
21 positioning
22 axis
23 guide rail
24 slider
25 connections
30 retaining border
30a one end (of retaining edge)
30b other end (of retaining border)
31 frame
32 support
33 reinforcing rod
34 vacuum suction pad
34a degassing
34b skirt part
35 turning
38 vacuum pump
40 1st Panel
40a One end side (on the first panel)
40b other end (on the second panel)
50 2nd Panel
50a One end (on the second panel)
50b other end (on the second panel)
60 injection nozzle
61 Tank
70 posture change mechanism
71 X-shaped arm
71 a, 71 b beam
71c axis
72 handles
80 maintenance edging
81 expectations
82 first axis
83 connecting arm
84 2nd axis
90 maintenance rim rocking mechanism
91 guide rail
92 platform
93 platform
94 crosslinked plate
95 crosslinking
96 pneumatic cylinder
96a piston rod
97 speed controller
100 control panel
P1 start movement position (injection nozzle)
P2 injection end position (injection nozzle)
P3 Move end position (injection nozzle)
200 display panel
201, 202 glass substrate
203, 204 transparent electrode
205 spacer
206 liquid crystal composition
207 backlight
210 protective panel
210a lower electrode substrate
211 spacer

Claims (11)

In the panel sticking method which makes the said display panel and the said transparent protective panel the object of adhesion | attachment to the display panel or the surface of which the transparent protective panel adhere | attaches to the said display panel, respectively, the buffer layer of transparent viscoelastic body formed, are made to adhere | attach. ,
One end side of the first panel, which is either one of the display panel or the transparent protective panel, and one end side of the second panel, which is the other side of the display panel or the transparent protective panel, are placed in close proximity or through a filling gap of the degassing aid. At the same time, the other end side of the first panel and the other end side of the second panel are spaced apart through a predetermined interval so that the adhesive surface of the first panel and the adhesive surface of the second panel have a predetermined acute angle. The first and second panels are disposed on the bonding start position where the second panel is disposed on the first panel,
The other end side of the second panel is gradually closer to the other end side of the first panel while introducing the degassing aid having a viscosity of 10 to 100 cps between the first and second panels on the first panel. When the first panel and the second panel through the degassing aid, the second panel is rocked at the bonding completion position and bonded to each other.
The first panel is inclined such that the other end side of the first panel faces upward,
The introduction of the degassing aid between the first and second panels is initiated at the one end side of the first panel at the adhesion start position, and the other end of the second panel is defined by the first panel. And closer to the other end side, moving the introduction position of the degassing aid to the other end side of the first panel. The method according to claim 1,
A panel bonding method, wherein the inclination angle of the first panel is 4 ° or more. The method according to claim 1 or 2,
And the introduction position of the degassing aid is moved between the long longitudinal center portion of the one end side of the first panel and the center portion of the other end side. The method according to claim 3,
And rocking the second panel in a state in which the center portion of the second panel, which is orthogonal to the one end side of the second panel, is bent downward as it bulges downward. The method according to any one of claims 1 to 4,
The degassing aid is introduced so that the thickness of the deodorizing aid is 40 µm or more. The method according to any one of claims 1 to 5,
The viscoelastic material constituting the buffer layer is an acrylic resin, and the degassing aid is a low molecular liquid phase composed mainly of hydrophobic saturated fatty acids. The display panel of a display device or the hard transparent protective panel bonded to the surface of the display panel, either of the display panel and the transparent protective panel formed with a buffer layer of transparent viscoelastic material formed on one of the adhesive surfaces In the panel bonding apparatus,
A mounting table capable of placing the first panel, which is either one of the display panel or the transparent protective panel, in a position in which the other end side is inclined with respect to one end side of the first panel;
A holding frame for holding a second panel which is the other side of the display panel or the transparent protective panel;
One end side of the first panel and one end side of the second panel are placed close to each other via a contact or filling gap of the degassing aid, and the other end side of the first panel and the other end side of the second panel are predetermined. An adhesive start position where the second panel is disposed on the first panel such that the adhesive surface of the first panel and the adhesive surface of the second panel are a predetermined acute angle at intervals between the second panel and the second panel; Keep the other end of the first panel closer to the other end of the first panel such that the first panel and the second panel are pivotally axially squeezed between the completion positions of the bonding where the first panel and the second panel overlap each other through the degassing aid. With the edging paper apparatus,
A holding edge swinging mechanism for swinging the holding edge from the bonding start position to the bonding completion position;
The first panel image placed on the mounting table is moved from the one end side of the first panel toward the other end side of the first panel while the degassing aid is injected, according to the swing amount of the holding edge by the holding edge swing mechanism. A panel bonding apparatus comprising a spray nozzle. The method of claim 7,
A posture for changing the posture between a horizontal position at which the first panel is horizontally mounted and an inclined position at which the other end side is inclined with respect to the one end side of the first panel A panel bonding apparatus comprising a change mechanism. The method of claim 7,
And the jet nozzle is arranged so as to move along the center line of the first panel forming a direction perpendicular to the one end side of the first panel. The method of claim 7,
When the holding edge is in the bonding start position, the second panel is stored such that the central portion of the second panel, which is perpendicular to the one end side of the second panel, is bent in a swelled state downward by its own weight. The holding | maintenance mechanism which hold | maintains is installed in the said holding | maintenance edge, The panel bonding apparatus characterized by the above-mentioned. The method according to any one of claims 7 to 10,
And the holding edge is allowed to swing between the ready position with the holding surface of the second panel facing upward and the bonding start position.

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