TW201532681A - Adhesive coating apparatus, manufacturing apparatus for display panel and method thereof - Google Patents

Abstract

The invention may inhibit adhesive coating on the work piece change by temporary sclerosis adhesive coating on the work piece. Besides, the adhesive may temporary sclerosis in appropriate timing then limiting to the appropriate shape, so that it may prevent the adhesive quality from decreasing. An adhesive coating apparatus 1 coats the adhesive R on the work piece S1 composing a display apparatus and the adhesive R may sclerosis by irradiated energy, and including: a coating section 10 moving relative to the work piece S1 and coating the adhesive R; and an irradiating section 11, irradiating energy make adhesive R coating by the coating section temporary sclerosis; and the irradiating section 11 setting an irradiating timing between a first timing which an adhesive plate of the adhesive R become flat and a second timing before collapse of the adhesive plate.

Description

Adhesive coating device, manufacturing device for display device, and manufacturing method

The present invention relates to an adhesive coating device, a manufacturing device for a member for a display device, and a method for producing a member for a display device, which are coated on a workpiece, for example, to fit a pair of workpieces constituting the display device. Adhesive technology.

In general, a flat-panel display device (flat panel display) typified by a liquid crystal display or an organic electroluminescence (EL) display is a touch panel for a display panel and an operation as needed ( The touch panel and the protective panel (cover panel) of the protective surface, the backlight, and the light guide plate are incorporated in the housing of the flat panel display.

These display panels, touch panels, protective panels, backlights, their light guides, and the like (hereinafter referred to as workpieces) are laminated and incorporated in the housing of the flat panel display. each The workpieces are assembled individually or in a pre-laminated state. For example, a member constituting a composite panel in which a touch panel is laminated on a protective cover may be used.

In addition, the display panel sometimes uses a function in which a touch panel is incorporated. As described above, there are various forms of the workpiece. However, in the following, two or more workpiece layers constituting the display device are referred to as members for the display device.

When a gap is provided between the workpieces in which the display member is laminated, the visibility of the display surface of the display is lowered due to external light reflection. In order to cope with this, the gap between the workpieces is filled by laminating the workpieces via the adhesive layer.

In the laminate of the workpiece, there is a method of bonding using a bonded sheet and a method of bonding using a fluid adhesive having fluidity. The adhesive sheet is relatively expensive compared to the adhesive, and requires a step of peeling off the release paper. Therefore, from the viewpoint of the cost reduction in recent years, etc., the use of adhesive bonding is the mainstream.

Further, the adhesive layer is sometimes required to function as a cushioning material between the workpieces to protect the workpiece. Further, in addition to the increase in size of the display, the area of the workpiece is also increased, and the workpiece is easily deformed. Therefore, in order to protect the workpiece by absorbing deformation, there is a tendency that the thickness required for the adhesive layer is increased. For example, the adhesive layer is required to have a thickness of several hundred micrometers (μm).

If a liquid adhesive is used to ensure the thickness of the adhesive layer, the amount of adhesive required is increased. As a result, the adhesive applied to the workpiece flows and is easily exposed from the workpiece. Thereby, a binder is applied to the surface of the workpiece, and the coating shape is temporarily hardened so as not to collapse (see Patent Document 1).

That is, a coating of an ultraviolet (UV)-curable resin is applied to a coated surface of a workpiece from a slit-type nozzle, and the nozzle is moved relative to the workpiece to apply a bond to the entire coated surface of the workpiece. Agent. At this time, the UV light is irradiated to the vicinity of the nozzle immediately after the nozzle, and the irradiation portion is temporarily hardened to suppress the flow.

[Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2012-71281

Immediately after the application of the binder, there is a case where the surface shape of the adhesive is unstable. When the workpiece is bonded in a state in which the shape of the bonding surface of the adhesive is unstable, the edge of the bonded adhesive may enter the viewing area or the like in a desired state. Further, after coating, collapse due to bulging or depression occurs on the surface of the adhesive over time. If the bonding is performed in the collapsed state on the bonding surface, the ridges or depressions cannot be completely flattened to generate voids.

Further, a general protective panel has a window portion and a frame portion. The window portion is an area that visually recognizes the display area of the display panel. The frame portion is a portion having a low transmittance of visible light formed by dividing the size and shape of the window portion. In recent years, even if the size of the display area of the display panel is equal, the requirement for reducing the size of the display panel itself is high. In this case, as shown in FIG. 19(A), the adhesive is attached to the display via the adhesive R. The window portion area C1 of the protective panel H on the panel I becomes large, and the frame portion region C2 becomes very narrow. In this manner, the position and shape of the end portion of the adhesive R are required to have high precision in a state to the extent shown in FIG. 19(A).

For example, when the end portion of the adhesive R is observed from the window portion region C1 as shown in Fig. 19(B), the display region is hindered. Since the end portion of the binder R has an R shape with a certain degree of curvature, it is necessary to apply the binder R inside the window portion region C1 so that the R portion is not observed in a plan view. If the R portion exists inside the window portion region C1, the portion corresponding to the broken line portion indicated by the hollow arrow in the drawing sometimes looks like a double line in plan view. Therefore, the R portion must be made extremely small. Of course, the state in which only the R portion exists inside the window portion region C1 becomes a problem.

Further, even if the end portion of the adhesive R is not overlapped with the display region, as shown in FIG. 19(C), when the adhesive R is exposed from the edge of the display panel I or the protective panel H, there is a possibility that the other member is defective. The impact is therefore mostly unacceptable.

Further, since the binder R starts to flow immediately after application, the shape of the end portion changes with the passage of time. For example, after the coating, the adhesive R causes collapse due to bulging or depression on the surface of the surface and the protective panel H after the application. If the bonding is performed in the state where the collapse occurs, as shown in FIG. 19(D), the ridges or depressions cannot be completely flattened to generate the pores G.

The present invention has been made to solve the problems of the prior art, and an object of the invention is to provide a binder coating device, a device for manufacturing a member for a display device, and a method for manufacturing a member for a display device, which can be used by The adhesive coated on the workpiece is temporarily hardened to suppress the variation thereof, and further, the adhesive can be used Temporarily hardening at an appropriate timing to define it to an appropriate shape, thereby preventing deterioration of the bonding quality.

In order to achieve the object, the present invention is an adhesive coating apparatus for adhering a pair of workpieces constituting a display device to an adhesive which is hardened by irradiation energy, and at least one of the pair of workpieces is attached The application adhesive includes a coating portion that moves relative to the workpiece to apply a binder to the workpiece, and an illuminating portion that temporarily hardens the adhesive by irradiating energy to the adhesive applied by the coating portion; The irradiation unit sets the timing of the irradiation energy between the first timing at which the bonding surface of the adhesive is flat and the second timing at which the bonding surface collapses.

The timing at which the irradiation unit reaches the irradiation position may be set between the first timing and the second timing.

As the timing of the irradiation of the irradiation unit, a start end irradiation timing may be set, from the start of application of the adhesive to the irradiation of the start end of the application by the irradiation unit, and the terminal irradiation timing, from the end of the application of the adhesive to the end of the application. The irradiation unit irradiates the coated terminal.

The first timing of the application terminal of the adhesive may be a timing at which the adhesive on the workpiece side and the adhesive on the application portion side are broken by the movement of the coating portion. The open portion causes the protruding portion generated by the adhesive on the workpiece side to disappear.

The second timing of the application start end and the end of the adhesive may be a timing at which the bonding surface of the adhesive is embossed.

The first timing and the second timing of the side end parallel to the application direction of the adhesive may be earlier than the timing of the beginning of the application of the adhesive or the central portion of the terminal.

As the timing at which the irradiation unit irradiates the side end parallel to the application direction of the adhesive, a timing different from at least one of the start irradiation timing and the terminal irradiation timing may be set.

The higher the viscosity of the adhesive, the later the time from the start of coating to the first timing and the second timing, and the lower the viscosity of the adhesive, from the start of coating to the first timing and the The time until the second timing is earlier.

The irradiation unit may have a plurality of irradiation sources of irradiation energy, and the irradiation timing of the plurality of irradiation sources may be different in such a manner that a time difference occurs in the time of irradiation to the application portion of the adhesive.

The irradiation unit may have a plurality of irradiation sources of irradiation energy, and may be configured to move a part of the plurality of irradiation sources independently of the other irradiation sources so that a time difference occurs in the time of reaching the application portion of the adhesive.

The interval between the application portion and the irradiation portion may be variably configured.

In addition, each of the above-described aspects can be understood as an invention of a manufacturing apparatus and a manufacturing method for manufacturing a member for a display device.

As described above, according to the present invention, it is possible to provide a binder coating device, a device for manufacturing a member for a display device, and a method for manufacturing a member for a display device which can temporarily fix an adhesive coated on a workpiece. Hardening The change in the surface shape of the adhesive can be made, and the adhesive can be temporarily fixed at an appropriate timing to be limited to an appropriate shape, thereby preventing deterioration of the bonding quality.

1‧‧‧Binder coating device

2‧‧‧Fitting device

3‧‧‧ Hardening device

4‧‧‧Transporting device

5‧‧‧Loader

6‧‧‧ Unloader

7‧‧‧Control device

10‧‧‧ Coating Department

10a‧‧‧Shading Department

11‧‧‧ Department of Irradiation

11a‧‧‧Environment source

11A‧‧‧Central Department of Irradiation

11B‧‧‧ Irradiation at both ends

11x‧‧‧Shift mechanism

12‧‧‧Support

12a‧‧‧ stage

12b‧‧‧ drive mechanism

20‧‧‧Fitting Department

21‧‧‧ chamber

22‧‧‧ Lower side panel

23‧‧‧Upper side panel

25‧‧‧ Lifting mechanism

30‧‧‧ Hardening Department

31‧‧‧ stage

33‧‧‧Irradiation unit

70‧‧‧Institutional Control Department

71‧‧‧ Storage Department

72‧‧‧Indications

73‧‧‧Intensity intensity indicator

74‧‧‧Input and output control unit

75‧‧‧Output device

100‧‧‧Manufacturing device for display device

TA, TB, TC, TD, TE, TF‧‧‧ points

G‧‧‧ pores

H‧‧‧protection panel

C1‧‧‧Window area

C2‧‧‧Frame area

I‧‧‧ display panel

L‧‧‧Components for display devices

R1‧‧‧ surface

R2, r5‧‧‧ flat surface

R3‧‧‧ uplift

R4‧‧‧ outstanding

R‧‧‧Binder

S1, S2‧‧‧ workpiece

S10‧‧‧ laminated body

T‧‧‧箱箱

The first timing of the starting side of T1‧‧

Second timing at the beginning of T2‧‧‧

T1'‧‧‧1st timing on the terminal side

T2'‧‧‧second timing on the terminal side

FIG. 1 is a schematic configuration diagram showing a manufacturing apparatus of a member for a display device according to an embodiment.

FIG. 2 is a schematic configuration diagram showing a coating device according to an embodiment.

3 is a perspective view showing a coating portion, an irradiation portion, and a temporarily cured state according to the embodiment.

4 is a partial perspective plan view showing a coating portion and an irradiation portion.

5(a) to 5(c) are explanatory views showing changes in the form of the adhesive at the beginning of the application.

6(a) to 6(c) are explanatory views showing changes in the form of the adhesive of the applied terminal.

7(A) and 7(B) are schematic configuration diagrams showing a bonding apparatus according to an embodiment.

8(A) and 8(B) are schematic configuration diagrams showing a curing device according to an embodiment.

Fig. 9 is a block diagram showing the configuration of a control device.

Fig. 10 is a timing chart showing the operation of each unit in the embodiment.

11(a) to 11(d) show the application from the application to the coating of the embodiment. An explanatory diagram of the operation of the terminal in the near future.

(a) to (d) of FIG. 12 are explanatory views showing an operation from the terminal of the application of the embodiment to the end of the irradiation.

Fig. 13 is a perspective view showing a tensile form of a terminal adhesive.

FIG. 14 is a perspective view showing an example in which the irradiation unit is divided into configurations.

Fig. 15 is a partial perspective plan view showing an example of a plurality of irradiation sources having different irradiation timings.

Fig. 16 is a partial perspective plan view showing an example of a plurality of irradiation sources having different arrangement positions.

17 is an explanatory view showing an example in which the interval between the irradiation portion and the coating portion is changed during coating.

Fig. 18 is a perspective view showing another embodiment of the application unit.

19(A) to 19(D) are explanatory views showing the state of the adhesive at the time of bonding.

Embodiments of the present invention (hereinafter referred to as embodiments) will be specifically described with reference to the drawings.

[composition]

First, the configuration of this embodiment will be described with reference to Figs. 1 to 9 .

[workpiece]

In the present embodiment, the workpiece S1 and the workpiece S2 to be bonded are configured. The member for the display device member is a laminated body of the member for a display device by bonding a protective panel (cover panel) to the display panel via the adhesive R. This device is a manufacturing device for a member for a display device that manufactures a laminate of members for the display device.

[Manufacturing device for member for display device]

As shown in FIG. 1, the manufacturing apparatus 100 for members for display devices has a binder coating device 1, a bonding device 2, a curing device 3, and a conveying device 4. Moreover, the manufacturing apparatus 100 of the member for display devices is equipped with the control apparatus 7. The control device 7 performs operation control of the devices constituting each unit, and control of the conveyance timing of the workpiece S1 and the workpiece S2.

The conveying device 4 includes a conveying unit that conveys the workpiece S1 and the workpiece S2 to each unit, and a driving mechanism of the conveying unit. For example, a turntable (turntable), a conveyor, and the like are considered as the transport unit. However, any device may be used as long as it can transport the workpiece S1 and the workpiece S2 between the respective devices.

The workpiece S1 and the workpiece S2 are carried into the manufacturing apparatus 100 for the display device member by the loader 5, and are transported by the transport device 4. The adhesive application device 1, the bonding device 2, and the curing device 3 are disposed along the conveying device 4. The workpiece S1 and the workpiece S2 are picked up from the transport device 4 by a pick-up element (not shown), and are carried in and out of the respective devices via a carry-in port (not shown). The display device member L is manufactured by the steps detailed below in each device, and the display device member L is carried out from the manufacturing device 100 for the display device by the unloader 6 .

[Binder coating device]

As shown in FIG. 2, the adhesive application device 1 has a support portion 12, a coating portion 10, and an irradiation portion 11.

[support]

The support portion 12 supports the workpiece S1 in the adhesive coating device 1 with the coated surface facing upward. The support portion 12 has a stage 12a and a drive mechanism 12b. The stage 12a is a flat plate-shaped platform on which the workpiece S1 is placed. The drive mechanism 12b is a mechanism that reciprocates the stage 12a in the horizontal direction. As the drive mechanism 12b, for example, a ball screw that is rotated by a drive source is considered. However, any device may be used as long as it can reciprocate the workpiece S1 placed in the horizontal direction. The speed at which the drive mechanism 12b starts and stops the movement and movement of the stage 12a is controlled by the control device 7.

[Coating section]

The coating unit 10 is, for example, a slit coater having a slit, and the adhesive R accommodated in the tank T is supplied to the workpiece S1 by pumping out the valve which is a flow path, that is, a pipe and a valve for adjusting the supply amount.

The slit is an opening that is parallel to the coated surface of the workpiece S1 and elongated in a direction orthogonal to the relative moving direction of the workpiece S1, and the length in the longitudinal direction is equal to or slightly shorter than the width of the workpiece S1. . As shown in FIG. 3, the tip end portion of the application portion 10 forms a nozzle (slit nozzle) which is provided at a position facing the workpiece S1.

Further, the coating portion 10 is provided with a shielding portion 10a. The shielding portion 10a is a binder that shields the energy from the illuminating portion 11 and prevents the energy from being irradiated to the tip end of the nozzle. The components of R. The shielding portion 10a can be, for example, a plate-like member attached to the irradiation portion 11 side of the application portion 10. In addition, depending on the distance between the application portion 10 and the irradiation portion 11, the irradiation intensity of the irradiation portion 11, the irradiation direction, the irradiation range, and the like, the influence of the irradiation energy on the adhesive R at the tip end of the nozzle may be small. It is also possible not to provide the shielding portion 10a.

Further, the application unit 10 is provided, for example, so as to be lifted and lowered in a direction orthogonal to the application surface of the workpiece S1 by a drive mechanism (not shown). The amount of the spray R from the nozzle is adjusted by the valve control and pump control of the control unit 7. Further, the shape of the adhesive R immediately after the ejection depends on the discharge speed, viscosity, and temperature of the adhesive R, the relative moving speed of the coated surface and the coating portion 10, and the clearance. Further, the shape of the applied adhesive R changes as follows.

Further, the binder R may be any resin that is cured by irradiation of energy from the outside. For example, an ultraviolet (UV) hardening resin or a thermosetting resin can be considered. In the present embodiment, an ultraviolet (UV) curable resin will be described. The viscosity of the binder R to be used is not particularly limited. However, as a viscosity which is highly necessary for suppressing the flow by temporary hardening, two thousand cps to tens of thousands of cps are set, and it is preferable that the viscosity is relatively low from 2,000 cps to 5,000 cps.

[irradiation department]

The illuminating unit 11 is a processing unit that irradiates the adhesive R with energy for temporary hardening. The illuminating unit 11 has a plurality of irradiation sources 11a for irradiating energy as shown in Fig. 4 . In the illuminating unit 11, for example, in the direction orthogonal to the coated surface of the workpiece S1 and in the direction orthogonal to the relative moving direction of the workpiece S1 indicated by the hollow arrow in the figure, The device S1 is disposed with a plurality of illumination sources 11a such as a light emitting diode (LED) or a laser diode (LD). For example, when the binder R is a UV curable resin, the irradiation source 11a is an irradiation source that outputs UV (ultraviolet) light, and the UV light from the irradiation source 11a is irradiated to the binder R coated on the workpiece S1. Further, in the case where the binder R is a thermosetting resin, the irradiation portion 11 irradiates heat energy from the heat source. The irradiation unit 11 in this case can be, for example, an irradiation unit that outputs Ir (outer line). In addition, although it is two rows in FIG. 4, it may be one row, and may be three or more columns, and is not specifically limited. Further, the illumination sources 11a may be in close contact or connected to each other, and the arrangement may be arranged in a zigzag (zigzag) state.

The irradiation of the irradiation unit 11 is performed such that the adhesive R is temporarily hardened. Temporary hardening refers to a state in which it has not reached full hardening. For example, the binder R is temporarily hardened by irradiating less energy required for hardening more completely. This allows the adhesive R to be in a temporarily hardened state by irradiation with weak intensity or irradiation for a short period of time. Further, in some UV curable resins, when UV is irradiated to the atmosphere, a temporary hardening state of a type in which the hardening of the surface of the binder R does not progress is caused by oxygen inhibition or the like.

The ON (ON), OFF (OFF), and the intensity of the irradiation energy of the irradiation of the irradiation unit 11 are controlled by the control device 7. Further, the irradiation unit 11 is configured to have a variable interval from the application unit 10. For example, as shown in FIG. 2, the displacement unit 11x, which is a position changing means, is provided so that the interval in the horizontal direction of the irradiation portion 11 with respect to the application portion 10 can be varied. The shifting mechanism 11x is provided to be capable of switching between a state in which the interval between the illuminating portion 11 and the coating portion 10 in the horizontal direction is fixed to a desired distance, and in the workpiece S1. The state in which the irradiation unit 11 and the coating unit 10 move independently in the relative movement direction. As the shifting mechanism 11x, for example, a ball screw that is rotated by a driving source is considered. The speed at which the shifting mechanism 11x starts and stops the movement and movement of the irradiation unit 11 is controlled by the control device 7.

Further, the shifting mechanism 11x may be any device as long as it can reciprocate the irradiation portion 11 in the horizontal direction. For example, the shifting mechanism 11x may not be provided with a function of moving independently of the application unit 10, and the interval between the irradiation unit 11 and the application unit 10 may be fixed only by the irradiation unit 11 and the application unit 10 at a desired position. In other words, if the acceleration/deceleration and the constant speed of the relative movement are set in advance, the interval between the irradiation unit 11 and the application unit 10 can be determined so that the irradiation can be performed at a desired irradiation timing. Therefore, the irradiation unit 11 may be disposed at intervals determined as described above. Therefore, for example, the shifting mechanism 11x may be configured such that the application portion 10 can be slidably moved in a long hole as a mounting hole and can be fixed at a desired position by a screw or the like. The displacement mechanism 11x that can change the position of the application portion 10 by being attached to any of the plurality of attachment holes may be used. It is also possible to provide a shifting mechanism 11x that is slidably movable on the slider and that can determine a fixed position by a stopper of a plurality of portions. In the case of this configuration, the position of the application portion 10 can be finely adjusted in accordance with the temperature change.

Further, in the present embodiment, the irradiation timing of the irradiation of the adhesive R by the irradiation unit 11 is controlled by the control device 7. This irradiation sequence is based on the flow pattern of the following adhesive R obtained by the inventors in detail, and the first timing and the bonding surface which are set to be flat on the surface of the adhesive R and the workpiece S2 are flat, and the second surface is collapsed. Between timings.

(the flow form of the adhesive)

The inventors conducted a detailed investigation of the flow of the binder R and found that the following phenomenon occurred. In the case where the adhesive R is applied flat on the workpiece S1, the shape of the end portion of the applied adhesive R changes with time. That is, when the adhesive R is applied in a rectangular shape, the shape of the end portion, that is, the four sides, changes from the time of coating. At this time, the shape of the surface of the adhesive R which is opposed to the coating portion contacting the workpiece S1, that is, the shape of the upper surface side which becomes the bonding surface is mainly changed. This change begins immediately after coating and converges at a fixed time. The time before the convergence varies depending on the state of the adhesive R (viscosity, thickness, shape immediately after coating, etc.).

More specifically, when the nozzle of the application portion 10 that ejects the adhesive R is moved relative to the workpiece S1 and the adhesive R is applied to the surface of the workpiece S1, immediately after the application, that is, the adhesive R is just in contact with the surface of the workpiece S1. As shown in Fig. 5(a), the contact end portion of the coated adhesive R is an anchor portion which is pulled in the direction in which the coating portion 10 is moved as shown in Fig. 5(a). A gently curved surface r1 having a large radius of curvature. At the same time, the surface tension acts on the direction of the binder R in the beginning direction, that is, toward the outer edge of the starting end. As the coating portion 10 is moved away, the tensile force is weakened, and the surface tension is strongly exerted. As shown in Fig. 5(b), the radius of curvature of the corner portion at the edge portion of the surface is minimized to a substantially right angle. Before the adhesive R flows, a flat surface r2 which is substantially parallel to the surface of the workpiece S1 is produced on the bonding surface of the surface of the adhesive R with the other workpiece S2. The time point at which the flat surface r2 is generated is the first timing.

Thereafter, as time passes, as shown in Fig. 5(c), the surface tension is such that The adhesive R at the corner portion of the cross section moves further toward the inner side opposite to the direction toward the outer edge to generate a ridge r3 having a height different from that of the flat surface r2. At this time, there is also a case where a depression is generated in a part. A state in which at least one of the ridges and depressions is generated in the adhesive R as described above is referred to as collapse. The time point at which the collapse occurred is the second timing. After the second sequence has collapsed, it collapses and then converges.

On the other hand, at the end of the application, as the application portion 10 rises after stopping the discharge of the adhesive R, the adhesive R is elongated as shown in Fig. 6(a), and thereafter, as shown in Fig. 6(b) Since the adhesive R on the side of the workpiece S1 and the side of the application portion 10 are broken, the protrusion r4 is generated at the corner portion of the edge of the adhesive R. As shown in FIG. 6(c), the protrusion r4 is absorbed and disappeared by the adhesive R on the side of the workpiece S1 by gravity or surface tension or the like, and thus is in the surface of the adhesive R with the other workpiece S2. The bonding surface produces a flat surface r5 that is substantially parallel to the surface of the workpiece S1. The time point at which the flat surface r5 is generated is also the first timing. Thereafter, as time passes, a collapse having a height different from that of the flat surface r5 is generated in the same manner as in FIG. 5(c). The time point at which the collapse occurs is also the second timing.

Further, even in the edge portion parallel to the application direction from the beginning of the application to the end, that is, the side end, the same changes as in FIGS. 5(a) to 5(c) occur. However, as described below, the stretching state due to the movement of the coating portion 10 or the positional relationship with the coating direction changes at a timing different from the starting end.

As described above, the interval between the first timing and the second timing at the beginning, the interval between the first timing and the second timing of the terminal, and the interval between the first timing and the second timing of the side end do not necessarily coincide with each other. Further, at the beginning or the side end of the coating, there is a case where a flat surface is generated substantially simultaneously with the start of coating. In this case, at the beginning or side, the first The timing is approximately the same as the coating start timing.

If the temporary hardening is performed earlier than the first time series, the shape is fixed to the curved surface r1 having a large radius of curvature, so that the double line shown in FIG. 19(B) is likely to be generated or the corner portion of the adhesive R is observed. Line. If the temporary hardening is later than the second time series, the shape is fixed in a state in which collapse occurs, so that the void B is easily generated as shown in Fig. 19(D).

The first timing and the second timing are the front end and the rear end which are allowable times for the timing at which the respective portions of the adhesive R start to be irradiated. The irradiation time of each part of the adhesive R may be a minimum time at which the shape of the adhesive R is fixed. This depends on the state of temporary hardening caused by the irradiation. For example, it is desirable that at least the temporary hardening rate becomes 20%. In the following, the adhesive R flows due to the bonding pressure at the time of bonding, and is exposed as shown in FIG. 19(C).

The above situation particularly affects the second timing that becomes the back end of the illumination timing. In other words, since the second timing is a critical point before the collapse occurs, the temporary hardening rate may not be maintained if the irradiation is performed at the second timing. In this case, the irradiation timing is set slightly earlier than the second timing.

(setting mode of irradiation timing)

The irradiation timing between the first timing and the second timing of the present embodiment is such that, as shown in FIGS. 5(b) and 6(c), a flat surface r2 and a flat surface r5 are formed from the edge of the adhesive R. The period until the edge portion collapses. Until the collapse occurs, it means that the collapse is maintained within a tolerance range that does not cause voids.

The setting of the irradiation timing can be realized by the following form.

(1) The arrival time of the irradiation unit to the irradiation site

First, the irradiation unit 11 sets the arrival time of the applied adhesive R so as to be between the first timing and the second timing. In other words, the interval between the application portion 10 and the irradiation portion 11 is set such that a time difference occurs between the application portion 10 and the irradiation portion 11 at the same portion, that is, the adhesive portion 11 is irradiated to the irradiation portion 11. The R position is positioned from the time when the adhesive R portion to be irradiated is applied to the time when the irradiation portion 11 is positioned, that is, the arrival time of the irradiation portion 11 to the adhesive R becomes the first timing and the second timing. between. With this arrival time difference, if the energy is irradiated while arriving, an irradiation time difference can be generated. The interval described here also includes a form in which the irradiation unit 11 and the application unit 10 move independently and change.

By the interval setting, the irradiation portion 11 starts the irradiation when it reaches the beginning of the coating, and the subsequent irradiation is continued, whereby the adhesive R can be temporarily cured in a flat state. In this case, by setting the interval between the irradiation unit 11 and the application unit 10, it is not necessary to temporarily stop the irradiation of the irradiation unit 11 in the vicinity of the end of the application as described below, and the irradiation can be continuously performed.

(2) Setting the specified time

The time from the start of the application of the adhesive R to the irradiation of the start end of the application portion, that is, the start irradiation timing, and the time from the end of the application of the adhesive R to the irradiation of the end portion of the application by the irradiation unit 11 are set. Timing. In addition, the start of application means, for example, a point at which the adhesive R ejected from the coating unit 10 adheres to the workpiece and the coating unit 10 starts to move relatively. At the end of coating, for example, the coating portion 10 The time at which the application of the adhesive R is started and the application portion 10 starts to rise is completed.

(3) Timing setting of the beginning and end of coating

For example, the first timing of the application start of the adhesive R is set to a timing at which the end face of the adhesive R which is pulled by the movement of the coating unit 10 and whose surface is deformed by the curved surface is restored to its curved shape. The deformation curvature is minimized and flattened. On the other hand, the first timing of the application end of the adhesive R is a timing at which the adhesive R on the workpiece S1 side and the application portion 10 side are caused by the movement of the coating portion 10 The breaking of the adhesive R causes the protruding portion of the adhesive R on the side of the workpiece S1 to disappear. Further, the second timing of the application of the adhesive R and the end of the terminal is a timing at which the edge portion collapses.

(4) Timing setting corresponding to the viscosity of the adhesive

Further, depending on the viscosity of the binder R, the rate of change of the binder R illustrated in FIGS. 5(a) to 5(c) and FIGS. 6(a) to 6(c) is different. That is, the higher the viscosity of the binder R, the slower the flow becomes, so the change is slow, and the lower the viscosity, the faster the flow becomes, so the change is fast. Therefore, the higher the viscosity of the adhesive R, the later the first timing and the second timing are, and the lower the viscosity of the adhesive R is, the earlier the first timing and the second timing are.

(test)

The viscosity of the binder R depends on the kind or temperature of the binder R. Further, the application thickness of the binder R also affects the flow of the binder R. The coating thickness or the initial coating shape is also affected by the amount of the adhesive discharged or the moving speed of the coating portion 10. Therefore, the first timing and the second timing may be based on a predetermined bonding The type, temperature, coating thickness, and coating operation state of the agent are determined by testing.

For example, a test example for determining the second timing will be described. First, a substrate for a display device of 10 inches in size is used as the workpiece S1, and a slit nozzle is used as the coating portion 10. The adhesive R was applied to substantially the entire surface of the substrate with a slit nozzle for 5 seconds. When the adhesive having a viscosity of 2,500 cps was applied at a normal temperature at a coating thickness of 200 μm, the edge portion thereof began to collapse within 1 second to 2 seconds. The second time series can be obtained by observing the collapse state and measuring the time. When the time to start the collapse is set to 2 seconds after coating, for example, at the beginning, the terminal, and the side end, the second timing is 2 seconds from the start of coating. In the first timing, the shape of the adhesive R from the start of coating can be observed at the beginning, and the shape of the adhesive R after the end of the application is observed, and the time can be measured.

Further, based on the test results, the relationship between the viscosity, the coating thickness, the temperature, the coating operation state, the time when the bonding surface is flattened, or the time at which the collapse is started may be obtained, and control may be performed based on the relational expression.

[Fitting device]

As shown in FIG. 7(A), the bonding apparatus 2 includes a bonding unit 20 that laminates the workpiece S1 and the workpiece S2 and laminates them. The bonding unit 20 has a configuration in which the lower side plate 22 and the upper side plate 23 are disposed to face each other in the chamber 21 . The chamber 21 is movable up and down, and when moving upward, the lower side plate 22 and the upper side plate 23 are opened to the outside, and the workpiece S1 and the workpiece S2 can be carried. When the lower side plate 22 and the upper side plate 23 are housed in the chamber 21 when moving downward, a sealed space is formed inside the chamber 21. The chamber 21 can adjust the internal pressure by an exhaust member (not shown). That is, when the workpiece S1 and the workpiece S2 are loaded, the cavity The chamber 21 is lowered, the inside is sealed, and then the pressure is reduced, and the bonding is performed under a reduced pressure atmosphere.

The lower side plate 22 serves as a support portion for supporting the workpiece S1 placed on the plate. The upper side plate 23 serves as a holding portion and holds the workpiece S2 by a holding mechanism. In the present embodiment, as an example, a case where the workpiece S1 coated with the adhesive R is supported by the lower side plate 22 and the workpiece S2 is held by the upper side plate 23 will be described.

As the holding mechanism of the upper side plate 23, for example, an electrostatic chuck, a mechanical chuck, a vacuum chuck, an adhesive chuck, and the like which are currently or in the future may be applied. A variety of chucks can also be used in combination. The upper side plate 23 is provided with the elevating mechanism 25 as a drive part. The upper side plate 23 is movable by approaching and moving away from the lower side plate 22 by the elevating mechanism 25, and as shown in FIG. 7(B), the workpiece S2 held by the upper side plate 23 is pressed against the workpiece supported by the lower side plate 22. S1 comes to the layer. The workpiece S1 and the workpiece S2 are bonded together via the binder R coated on the surface of the workpiece S1 to form a layered body S10.

The lower side plate 22 may be provided with the same holding mechanism as the upper side plate 23 so as not to shift the position of the workpiece S1 placed thereon.

[hardening device]

As shown in FIGS. 8(A) and 8(B), the curing device 3 includes a curing portion 30 that cures the adhesive R that bonds the workpiece S1 and the workpiece S2. The curing device 3 includes a stage 31 on which the laminated body S10 is placed, and an irradiation unit 33 that is disposed on the stage 31.

The illumination unit 33 includes one or more lamps or LEDs that can emit hardening energy, such as UV. The irradiation of the irradiation unit 33 is adjusted in such a manner as to irradiate the amount of energy required to harden the adhesive R. The amount of energy is strong by irradiation Degree and time to adjust.

[control device]

The control device 7 is a device that controls the operation of the manufacturing device 100 for the member for the display device. In the present embodiment, in particular, as described above, the irradiation timing of the irradiation unit 11 is such that the first timing of the bonding surface shape of the adhesive R is flat and the second timing at which the bonding surface shape collapses. The movement of the stage 12a, the lifting and lowering of the coating unit 10, the discharge amount of the adhesive R, the irradiation timing of the irradiation unit 11, the irradiation intensity, the movement, and the like are controlled. The control device 7 can be realized by, for example, a dedicated circuit or a computer operating in a predetermined program. The details of the operation of each unit controlled by the control device 7 will be described below as an action of the present embodiment.

The configuration of the control device 7 for realizing the above control will be described with reference to a virtual functional block diagram, Fig. 9. That is, the control device 7 includes the mechanism control unit 70, the storage unit 71, the irradiation instruction unit 72, the irradiation intensity instruction unit 73, and the input/output control unit 74. In addition, the description of the input device such as a switch, a touch panel, a keyboard, and a mouse for the operator to operate the control device 7 will be omitted.

The mechanism control unit 70 is a processing unit that controls a drive source, a valve, a switch, a power source, and the like of the mechanism unit such as the support unit 12, the application unit 10, the irradiation unit 11, the bonding unit 20, and the curing unit 30.

The storage unit 71 is a processing unit that stores information necessary for the processing of the own device such as the start irradiation timing and the terminal irradiation timing. As described above, the start irradiation timing and the terminal irradiation timing are respectively set between the first timing and the second timing.

The irradiation instruction unit 72 controls the irradiation timing according to the start end and the irradiation timing of the terminal. A processing unit that irradiates the irradiation unit 11. The irradiation intensity indicating unit 73 is a processing unit that controls the irradiation intensity of the irradiation unit 11. The input/output control unit 74 is an interface for controlling conversion or input and output of signals with the respective units that are the control objects.

Further, an output device 75 such as a display, a lamp, or a meter for confirming the state of the device is connected to the control device 7. The first timing, the second timing, the start irradiation timing, the terminal irradiation timing, and the like may be displayed on the output device 75.

[effect]

In addition to the above-described FIGS. 1 to 9 , the above-described state transition diagrams of FIGS. 11 , 11 ( a ) to 11 ( d ), and FIGS. 12( a ) to 12 ( d ) have the above state transition diagrams. The operation of the present embodiment configured will be described. Further, the positions and sizes of the stage 12a, the workpiece S1, the workpiece S2, the application portion 10, and the irradiation portion 11 in Figs. 11(a) to 11(d) and Figs. 12(a) to 12(d) are merely For the performance of expediency for illustration.

(summary)

First, as shown in FIG. 2, the stage 12a on which the workpiece S1 is placed under the application portion 10 and the irradiation portion 11 is in the horizontal direction by the drive mechanism 12b (right to left as indicated by the arrow in the figure) )mobile. The relative movement of the coating unit 10 and the irradiation unit 11 with respect to the stage 12a is the same as the relative movement with respect to the workpiece S1.

The application of the adhesive R starts from the one end portion (the left end in the drawing) of the workpiece S1, and ends at the opposite end portion (the right end in the drawing). The start side of the start of the coating was set to the application upstream side, and the terminal side where the application was completed was set to the coating downstream side. Further, as shown in FIG. 3, the photo disposed on the upstream side of the application of the coating portion 10 The shot portion 11 is made to temporarily fix the adhesive R (hatched portion in the drawing) by irradiating the coating portion directly under the surface with energy for temporary hardening such as UV light.

(time map)

Next, the operation timing of each part of the adhesive coating apparatus 1 will be described with reference to the time chart of FIG. The horizontal axis of Fig. 10 is time. (a) on the vertical axis of Fig. 10 is the moving speed of the stage 12a, (b) is the discharge amount of the adhesive R from the coating portion 10, (c) is the height of the coating portion 10, and (d) is the irradiation portion. 11 ON, OFF, and irradiation intensity of the irradiation to the adhesive R. Further, the first timing on the start side is indicated by T1, the second timing on the start side is indicated by T2, the first timing on the terminal side is indicated by T1', and the second timing on the terminal side is indicated by T2'. Hereinafter, (a) to (d) will be described in detail.

(a) Movement speed of the stage

The time point TA indicates that the coating is started. The time from the time point TB to the time point TC indicates the time at which the movement of the stage 12a becomes a constant speed. This constant speed is a fixed speed at which the adhesive R is applied to the workpiece S1 with a uniform thickness when the amount of the adhesive R discharged per unit time of the coating unit 10 is a fixed amount. Further, the constant speed is a relative moving speed of the application portion 10 and the stage 12a, and is different depending on the viscosity of the adhesive R, the discharge amount, the desired coating thickness, and the like.

The speed of the stage 12a is accelerated from the time point TA, and reaches a constant speed at the time point TB. The stage 12a maintains a state of constant speed, and starts deceleration from a time point TC immediately before the application of the time point TD, and temporarily stops at the time point TD. This is as follows for the purpose of coating the completed adhesive R by the coating portion 10. It rises and is disconnected from the adhesive R on the nozzle side. In order to stably perform the breaking of the adhesive R and suppress the fluctuation before the first timing, it is preferable to stop. However, it may be easily broken depending on the viscosity of the adhesive R, etc. In this case, it may be disconnected while maintaining a constant speed or a decelerating movement without stopping. Thereafter, the stage 12a is moved again from the time point TE so that the coating unit 10 is retracted from the stage 12a and the irradiation unit 11 comes to the end of the application of the adhesive R, and is decelerated after a short time of acceleration and at the time point. TF stops.

(b) The amount of the adhesive from the coating portion

At the time point TA, the adhesive R is ejected from the nozzle of the coating unit 10. The coating unit 10 accelerates the loading of the stage 12a from the time point TA, and increases the discharge amount so that the coating amount per unit area of the workpiece S1 is fixed. Since the stage 12a maintains a constant speed from the time point TB to the time point TC, the discharge amount of the application portion 10 is also fixed. Thereby, the coating amount per unit area of the workpiece S1 is fixed. The coating unit 10 reduces the discharge amount so that the coating amount per unit area of the workpiece S1 is fixed from the time point TC in accordance with the deceleration of the stage 12a. Then, the ejection is stopped at the time point TD. When the discharge is stopped, the pump is operated in the opposite direction to the supply, whereby the flow of the adhesive R can be prevented from dripping.

The discharge amount is determined from the time point TA to the time point TD in such a manner as to achieve a desired fixed coating thickness. In other words, even if the stage 12a is accelerated or decelerated, the discharge amount is changed so as to be the same coating thickness as the section of the constant speed.

In addition, (b) of FIG. 10 shows a change in the discharge amount of the adhesive R from the coating unit 10, and does not necessarily correspond to a pump for supplying and stopping the supply of the adhesive R, and The control timing of valves and the like is the same. In other words, since the time lag occurs in the change in the discharge amount and the timing of the control timing and the result of the pump and the valve, the pump and the valve are controlled in such a manner that the discharge amount becomes (b) in consideration of the time lag. Wait. Further, the start of the movement of the stage 12a and the discharge of the adhesive R are set to the time point TA, and the discharged adhesive R is spread between the tip end of the nozzle of the coating unit 10 and the workpiece S1 in a very short time. Therefore, there is a slight deviation from the start of the discharge to the start timing of the movement of the stage 12a.

(c) height of the coating section

The coating unit 10 is at a height (standby height) from the standby position from the workpiece S1 in the initial state. In order to start the application of the adhesive R, the coating portion 10 must approach the workpiece S1 and descend to a height (coating height) that can be applied from the nozzle to a desired position of the workpiece S1.

That is, before the time point TA, the application unit 10 starts to descend from the standby height to the coating height. Moreover, the coating unit 10 starts to eject the adhesive R at the time point TA at which the coating height is reached. In addition, in FIG. 10, the timing at which the coating height is reached is the same as the time point TA, but there is no problem as long as it is before the time point TA.

When the stage TD is stopped at the time point, the coating portion 10 is located at the end position of the workpiece S1 which becomes the coating terminal. As described in the control of the discharge amount of the binder R, the discharge also ends at the same time as the stop. Then, the application unit 10 rises toward the standby height. Thereby, the adhesive R on the side of the workpiece S1 is disconnected from the adhesive R on the nozzle side. The standby height is set to a sufficient height for the adhesive R to be disconnected in such a manner. In addition, the timing of each operation described above is an example. The timing of the vertical movement and the discharge operation of the coating unit 10 does not necessarily coincide with the timing of the movement of the stage 12a.

(d) Irradiation of the irradiation section

When the moving speed of the TB stage 12a becomes a constant speed at the time point, the irradiation of the start end of the adhesive R applied to the workpiece S1 is started by the irradiation unit 11. The irradiation start timing is in accordance with a preset start irradiation timing. The start irradiation timing may be between the first timing T1 and the second timing T2. It is not necessary to be the time point TB, and it is preferably after the time point TB from the viewpoint of uniformity of the amount of irradiation energy per unit area.

At the start irradiation timing, as shown in FIG. 5(b), the bonding surface of the adhesive R becomes the flat surface r2, and is temporarily hardened in this state. The irradiation unit 11 moves relative to the workpiece S1 in the same manner as the application portion by the movement of the overload stage 12a. Therefore, the irradiation unit 11 irradiates energy while moving relative to the applied adhesive R as the workpiece S1 moves. Then, the irradiation unit 11 temporarily stops the irradiation at the time point TD at which the movement of the stage 12a and the application of the application unit 10 are completed.

At the time point TE at which the stage 12a starts moving again with the irradiation unit 11 coming to the application end of the adhesive R, the irradiation unit 11 starts irradiation. When the stage 12a is decelerated after a short time acceleration and stopped at the time point TF, the irradiation section 11 stops the irradiation.

As described above, the reason why the irradiation unit 11 temporarily stops the irradiation is as follows. When the application unit 10 performs the operation of breaking the adhesive R at the end of the application, the irradiation unit 11 stops above the adhesive R immediately before it. When the irradiation is continued in this state, the amount of the irradiation energy per unit area of the adhesive R directly under the irradiation portion 11 becomes excessive, which may cause a temporary hardening rate (80% or more) which is unsuitable for bonding. Thereby, the irradiation unit 11 temporarily stops the irradiation at the same time as the stop of the stage 12a to prevent excessive irradiation. Such as Therefore, in order to reliably control the progress state of the temporary hardening, it is preferable to temporarily stop the irradiation. However, depending on the irradiation intensity or the stop time, the amount of the irradiation energy may not be excessive. In this case, the irradiation may be stopped or the irradiation intensity may be weakened. Further, the illuminating unit 11 can be continuously moved in the coating direction by the shifting mechanism 11x to avoid concentrated irradiation of a portion.

As described above, the timing at which the irradiation is started again after the irradiation is temporarily stopped is the timing at which the end of the application of the adhesive R is irradiated with the temporarily hardened energy, in accordance with a preset terminal irradiation timing. The terminal irradiation timing may be between the first timing T1' and the second timing T2'. At the terminal irradiation timing, as shown in FIG. 6(c), the bonding surface with the other workpiece is a flat surface r5, and temporary hardening is performed in this state.

In addition, as described above, when the irradiation of the irradiation unit 11 is not temporarily stopped, the irradiation unit 11 is relatively moved by the shift unit mechanism 11x with respect to the stopped stage 12a and the application unit 10. In other words, the irradiation unit 11 starts moving without stopping the irradiation, and approaches the coating unit 10. During this time, the illumination can be continued at a near constant speed near the terminal by continuing the illumination. Thereafter, when the irradiation unit 11 reaches the terminal after the first timing T1', the irradiation unit 11 can continue the irradiation without stopping before reaching the terminal. Further, the illuminating unit 11 may stop and temporarily stop the irradiation before the arrival of the first timing T1 ′ in the vicinity of the terminal, and move again after the arrival of the first timing T1 ′ and start the irradiation. In the process of moving the irradiation unit 11 as described above, it is preferable to maintain a constant speed, but acceleration at the start of movement and deceleration before stopping are necessary. Further, it is also possible to decelerate so as to reach the terminal after the first timing T1'.

(coating step)

Next, the coating step of the present embodiment according to the time chart will be described with reference to Figs. 11(a) to 11(d) and Figs. 12(a) to 12(d). Further, (1) to (8) described below correspond to FIGS. 11(a) to 11(d) and FIGS. 12(a) to 12(d), respectively.

(1) The overtaking stage 12a is moved to the coating start position, and the discharge port of the coating unit 10 at the standby height is positioned directly above the application start end of the workpiece S1. Further, the coating portion 10 starts to decrease toward the coating height.

(2) When the application portion 10 reaches the coating height and stops, when the adhesive R is ejected from the application portion 10, the adhesive R is supplied to the workpiece S1. When the binder R is spread between the workpiece S1 and the coating height, the stage 12a starts to move in the coating direction, so that the application of the binder R to the surface of the workpiece S1 is started (Fig. 10: time point TA). The stage 12a is accelerated from the time point TA, and the application unit 10 gradually increases the discharge amount of the adhesive R.

(3) At the time point TB, the stage 12a stops accelerating and becomes a constant constant speed, and the amount of discharge of the adhesive R in the application unit 10 also stops increasing and becomes fixed. That is, in this state, the relative moving speed of the application portion 10 and the irradiation portion 11 with respect to the stage 12a, the workpiece S1, and the adhesive R becomes a constant speed. The irradiation instructing unit 72 counts the start time from the start of the application, that is, the movement of the stage 12a, and causes the irradiation unit 11 to start irradiation when the start end irradiation timing is reached (FIG. 10: time point TC).

Further, the time from the start of the movement of the stage 12a to the time when the constant speed is reached can be known from the setting of the drive mechanism 12b of the stage 12a. Therefore, the irradiation unit 11 is applied to the coating stage 12a at a constant speed based on the time. The manner of the beginning of the coating unit 10 and the irradiation unit 11 may be set. Thereby, the irradiation of the irradiation portion 11 to the adhesive R can be performed at a constant speed from the beginning of the application.

However, the irradiation to the beginning of the coating is determined by the start irradiation timing as described above. Therefore, the irradiation unit 11 may set the interval between the application unit 10 and the irradiation unit 11 so as to irradiate the start end between the first timing T1 and the second timing T2 for the start end irradiation timing. Therefore, the interval at which the irradiation can be started at a constant speed is only required to be an interval at which the irradiation can be irradiated at the beginning end. For example, the interval between the application portion 10 and the irradiation portion 11 can be set at the time of design or by the displacement mechanism 11x.

When the start irradiation timing is changed when the type of the binder R is changed, the interval between the irradiation unit 11 and the application unit 10 may be appropriately changed. Further, the timing of the irradiation of the start end of the adhesive R may be adjusted by adjusting the timing of the start of irradiation without adjusting the position of the irradiation portion 11. Therefore, the irradiation at the start end irradiation timing can be realized by the interval between the application portion 10 and the irradiation portion 11, the ON or OFF timing of the irradiation of the irradiation portion 11, or a combination thereof. If the irradiation unit 11 is set to the start end at the start end irradiation, the irradiation unit 11 may start the irradiation before reaching the start end. For example, the irradiation unit 11 may start irradiation at the time shown in FIG. 11(b). In this case, the start end irradiation timing may be adjusted only by the interval between the application portion 10 and the irradiation portion 11.

The amount of irradiation energy per unit area of the binder R can be made uniform by irradiation at a constant speed. However, the amount of the irradiation energy can also be made uniform by changing the irradiation intensity in accordance with the speed. In addition, depending on the degree of speed or the viscosity of the adhesive R, the degree of temporary hardening required, the speed is changed even if the irradiation intensity is fixed. The degree of uniformity of a certain amount of illuminating energy can also be maintained or within an allowable range of unevenness. Therefore, it is not necessary to start the irradiation at a constant speed.

(4) The stage 12a starts to decelerate from the end of the application of the coating unit 10 to the application of the workpiece S1 (Fig. 10: time point TC). With this deceleration, the coating portion 10 gradually reduces the amount of discharge of the adhesive R.

(5) When the application unit 10 reaches directly above the application terminal of the workpiece S1, the stage 12a is temporarily stopped, and the irradiation unit 11 also temporarily stops the irradiation and movement (FIG. 10: time point TD). At this time, the application unit 10 stops the discharge of the adhesive R.

(6) In a state where the stage 12a is stopped with respect to the application unit 10, the application unit 10 rises and stops at the standby height. Since the application unit 10 stops the discharge of the adhesive R, the adhesive R on the side of the workpiece S1 is disconnected from the adhesive R on the nozzle side at any time before the application unit 10 reaches the standby height.

(7) After the timing at which the adhesive R is reliably turned off, the stage 12a starts moving again (Fig. 10: time point TE). The moving distance of the stage 12a is at least the distance that the illuminating unit 11 can reach the coated terminal. The moving speed of the stage 12a during this period is shifted to deceleration after a short time acceleration. The irradiation instructing unit 72 counts the start time from the application of the application unit 10, and causes the irradiation unit 11 to start irradiation when the terminal irradiation timing is reached. The terminal irradiation timing may be between the first timing T1' and the second timing T2', and is not necessarily the time point TE. However, from the viewpoint of uniformizing the amount of irradiation energy, it is preferably the time point TE. Further, the timing at which the adhesive R is reliably disconnected can be confirmed by a test in advance and set.

(8) When the stage 12a is stopped and the irradiation unit 11 reaches the coated terminal At the inter-point, the illuminating unit 11 stops the irradiation (Fig. 10: time point TF). Further, in a state where the irradiation portion 11 is located at the end of the coating, it is not necessary to complete a series of coating operations to the workpiece S1. The stage 12a may be stopped after the irradiation portion 11 is moved over the upper end of the coated terminal and before being retracted from above the workpiece S1. Therefore, it is not necessary to stop the irradiation at the time when the irradiation unit 11 reaches the terminal, and it is also possible to pass the terminal while irradiating.

In addition, as shown by the single-dot chain line of FIG. 10(d), the irradiation intensity instruction unit 73 gradually decreases the irradiation intensity of the irradiation unit 11 as the moving speed of the stage 12a decreases, and the irradiation of the irradiation unit 11 is performed. The intensity rises (changes) as the moving speed of the stage 12a rises (changes) in a short time, and the amount of the irradiation energy can be made uniform.

Further, the irradiation unit 11 and the application unit 10 may be independently moved from the time point TD. For example, from the time point TD, the illuminating unit 11 starts moving in the coating direction and accelerates its speed. When the deceleration of the stage 12a is made equal to the absolute value of the acceleration of the irradiation unit 11, the relative movement of the irradiation unit 11 with respect to the workpiece S1 is maintained at a constant speed. Therefore, even if the relative movement speed of the workpiece S1 and the coating portion 10 changes due to the completion of the application, the relative movement speed of the adhesive R applied to the workpiece S1 and the irradiation portion 11 is maintained at a constant speed, and the area per unit area of the adhesive R is maintained. The amount of illuminating energy is maintained. Thereby, the temporary hardening state of the adhesive agent R is also maintained similarly to the prior art. In this case, the timing at which the irradiation unit 11 reaches the applied terminal may be set between the first timing T1' and the second timing T1'. Further, as described above, the irradiation unit 11 may stop at the time of reaching the end of the application and the irradiation may be stopped, or may stop and stop the irradiation after passing through the terminal.

(Fitting step)

As described above, the workpiece S1 to which the adhesive R is applied is carried out from the application unit 10 by a pickup element (not shown), and is carried by the transfer device 4 and carried into the bonding device 2 . Here, the workpiece S2 is also carried into the bonding apparatus 2. As shown in Fig. 7(A), the lower side plate 22 supports the workpiece S1 placed on the plate. The upper side plate 23 holds the workpiece S2 by a holding mechanism. The conveyance timing of the workpiece S1 and the workpiece S2 is not limited to one timing as long as it can be adjusted so that the bonding apparatus 2 can join.

For example, the workpiece S2 and the workpiece S1 are simultaneously carried into the manufacturing apparatus 100 for the display device member, but the workpiece S2 may be passed through the coating device 1 and carried into the bonding device 2 in advance. Then, the workpiece S2 stands by in the bonding apparatus 2 while the adhesive R is applied to the workpiece S1 by the coating device 1. Alternatively, the workpiece S2 may be carried into the manufacturing apparatus 100 for the display device member at the timing after the workpiece S1, and may be carried into the bonding apparatus 2 at the same timing as the workpiece S1 that has been applied by the coating device 1. It suffices that the time taken for the application to the workpiece S1 and the time taken for the workpiece S2 to be loaded into the bonding apparatus 2 are not generated.

When the workpiece S1 and the workpiece S2 are carried in, the chamber 21 is lowered, the inside is sealed, and then the pressure is reduced. Under the reduced pressure environment, the workpiece S2 held by the upper side plate 23 is supported as shown in Fig. 7(B). The workpiece S1 of the lower side plate 22 is pressed and bonded. The laminated body S10 formed by bonding the workpiece S1 and the workpiece S2 is carried out from the bonding apparatus 2 by a pick-up element (not shown), and is transported by the transport apparatus 4 and carried into the curing apparatus 3.

(hardening step)

As shown in FIG. 8(A), the laminated body S10 conveyed by the conveying device 4 is placed on the stage 31 of the curing device 3. Then, as shown in Figure 8(B), The firing unit 33 irradiates the amount of energy required to completely cure the adhesive R to complete the hardening of the adhesive R.

Further, the manufacturing apparatus 100 for the display device member may perform other steps before or after the coating device 1, the bonding device 2, and the curing device 3. Therefore, the manufacturing apparatus 100 for a display device member may include, for example, a position alignment portion that photographs the appearance of the workpiece S1 and the workpiece S2 in the front stage of the coating apparatus 1 or the front stage of the bonding apparatus 2, or performs alignment. The laminated body S10 is a baling unit or the like that is bundled. Further, in the subsequent stage of the bonding apparatus 2, a position alignment portion for correcting the offset between the workpiece S1 and the workpiece S2 generated at the time of bonding may be provided, or the pores generated on the bonding surface may be pressurized by the atmospheric pressure. The standby unit of the standby time that has disappeared.

Further, a mechanism for inverting the workpiece S1 may be provided in the conveying device 4, the coating device 1, or the bonding device 2, and the workpiece S1 to which the adhesive R is applied may be inverted and held on the upper plate 23 of the bonding device 2. In this case, the workpiece S2 can be placed on the lower side plate 22 to be bonded. Of course, the workpiece S2 can also be turned over and held on the upper side plate 23 of the bonding device 2.

[effect]

(1) According to the above-described embodiment, after the application of the adhesive R, temporary hardening is performed from the occurrence of the flat surface to the collapse of the adhesive, so that the adhesive R can be removed in a state where the ridge or the depression is not allowed or is within an allowable range. The shape is fixed. That is, the applied adhesive R can be limited to an appropriate shape. Therefore, it is possible to bond with other workpieces while maintaining a flat surface. In addition, the temporary adhesion can be suppressed by the temporary hardening The pressure at the moment causes the adhesive R to be extruded out to the outside.

Further, the present invention can be realized by a configuration in which the interval between the irradiation unit 11 and the application unit 10 is set such that the timing at which the irradiation unit 11 reaches the irradiation position becomes between the first timing and the second timing. In addition, it is only necessary to set an appropriate start end irradiation timing and a terminal irradiation timing which are obtained in advance by a test or the like in advance, and thus the control configuration is also simplified.

In the case where the timing control of the present embodiment is not performed, the irradiation unit 11 is irradiated with energy before the start of the application, for example, from the time point TA of FIG. 10, and the irradiation unit 11 passes the application start end while irradiating energy. In this case, when the irradiation unit 11 passes the start end of the application, the first timing T1 shown in FIG. 10 is not limited. Therefore, it is possible to fix the shape by temporary hardening before the start is flattened. In the present embodiment, since the temporary hardening is performed after the first time series T1, the shape is not fixed before the flattening. Further, when the start end irradiation timing of the present embodiment is not set, depending on the arrangement interval between the application portion 10 and the irradiation portion 11, the irradiation of the stage 12a may be started. In this case, the amount of the irradiation energy per unit area of the binder R may become uneven. In the present embodiment, since the relative movement with the stage 12a is a constant speed, the amount of the irradiation energy can be made uniform by setting the irradiation unit 11 to start the irradiation of energy. However, as described above or below, the energy irradiation during acceleration may be achieved by independently moving the irradiation unit 11 and the application unit 10 or adjusting the irradiation intensity to achieve uniformization of the amount of irradiation energy.

The higher the viscosity of the adhesive R, the later the first and second timings are, and The lower the viscosity of the binder R is, the earlier the first timing and the second timing are, so that an appropriate timing corresponding to the viscosity can be set. That is, in the case of the low-viscosity binder R, the binder R easily flows, but the shape can be quickly fixed by temporary hardening.

On the other hand, in the case of the high-viscosity binder R, the initial end of the coating should be temporarily hardened earlier, and at the end of the coating, the protruding portion generated on the adhesive R remains for a long time. Therefore, in the case where the start end and the terminal are irradiated at the same timing only, the coated terminal is fixed in a state where the protruding portion generated on the adhesive R remains. In the present embodiment, since the temporary hardening is waited before the first timing at which the protruding portion disappears, the starting end and the terminal can be uniformly bonded.

Further, for example, when the entire workpiece is irradiated once after the entire workpiece is applied and the entire adhesive is temporarily cured, it takes time from application to temporary hardening, so that it is accompanied by the start end, the end, and the middle of the coating. The time passes to produce a shape change. In the present embodiment, the coating shape that changes at the beginning, the end, and the middle of the time can be temporarily hardened in an appropriate shape even at any place and at any timing. Therefore, the shape change does not occur with time in each portion. Further, since it is not necessary to separately provide a position for temporary hardening, the apparatus does not become large.

(2) When the coating is performed by the movement of the loading stage 12a side as in the present embodiment, the coating unit 10 that elevates and lowers and the irradiation unit 11 that performs the acceleration/deceleration operation in the coating direction are driven independently. The configuration can be simplified as compared with the case of constituting a configuration that moves in the coating direction.

(3) If it is used as in the present embodiment, it is used from a linear discharge port. When the nozzle having the slit is ejected as the coating portion 10, the thickness in the direction orthogonal to the application direction can be easily made uniform, and the thickness can be made uniform by the planar coating by the movement.

(4) The relative speed of the coating unit 10 and the irradiation unit 11 with respect to the adhesive R applied to the workpiece S1 is always maintained at a constant speed. Therefore, since the amount of the irradiation energy per unit area of the binder R is fixed, unevenness in the temporary hardening state does not occur. Thereby, the flow of the adhesive R can be prevented, and the cushioning property and the adhesiveness can be maintained. Therefore, a uniform adhesive layer can be formed without strain or the like at the time of bonding, and the adhesiveness is not impaired. Further, since the application portion 10 changes the coating amount of the binder R in accordance with the relative speed with the workpiece S1, it is possible to apply a uniform thickness.

[Other embodiments]

As described above, the shape of the adhesive starts to change immediately after application to the start end and the end of the coating, and collapse occurs after the flat portion is generated, and the side end which is parallel to the coating direction is also generated. However, at this side end, the shape change after coating is sometimes faster than the beginning. For example, there is a case where the speed from the state of FIG. 5( a ) to the state of FIGS. 5( b ) and 5 ( c ) is fast, or from FIG. 6( a ) to FIG. 6( b ) and FIG. 6( c ). The state of the state is fast.

In particular, as shown in Fig. 13, at the end of the coating, the side ends are separated first during the process in which the binder R is stretched, and the central portion is finally separated. As described above, for example, the second timing of the side end of the applied terminal can be set earlier than the second timing of the central portion of the terminal.

The force that causes the change of the binder R at the beginning, side, and end of the coating has The following features.

(starting point)

The coating portion 10 relatively moves while ejecting the adhesive R from the slit, whereby the adhesive R that is in contact with (coated) on the surface of the workpiece S1 is stretched in the coating direction. Further, the surface tension toward the start end of the outer edge toward the outer end acts. That is, the tensile force acting in the direction in which the coating portion 10 relatively moves is opposite to the direction in which the surface tension of the flat surface is collapsed.

(side end)

Since the coating direction and the direction in which the side end faces face are substantially orthogonal directions, the tensile force in the coating direction and the surface tension toward the outer edge are shifted by substantially 90 degrees. Therefore, the degree of the tensile force and the surface tension cancel each other is weakened, and the surface tension acting in the side end direction toward the outer edge of the side end acts more strongly than at the beginning.

(terminal)

Since the application portion 10 is stopped in the application direction, the tensile force generated by the relative movement of the application portion 10 does not function. The stretching force applied by the coating portion 10 in the moving direction in order to break the adhesive R and the surface tension generated on the surface of the adhesive R are complicatedly affected. Further, after the adhesive R is broken, only the surface tension is applied, but the changed state is affected by the occurrence of the protruding portion at the center portion. (See Fig. 6(a) to Fig. 6(c), Fig. 13).

According to the above, the first timing and the second timing are the earliest at the side end, and the second is at the beginning and the side of the terminal, and finally at the center of the terminal.

In order to realize the various timings described above, the following configuration may be employed.

(1) Dividing the illuminating part and changing the irradiation timing

As shown in Fig. 14, the illuminating unit 11 is divided into an illuminating unit 11A having a central portion and an illuminating unit 11B at both side ends, and can be independently moved such that a part of the plurality of irradiation sources 11a has a time difference to the arrival time of the application portion. The illuminating unit 11A and the illuminating unit 11B are provided. Thereby, the irradiation timing of the side end parallel to the application direction of the adhesive R is made earlier than the irradiation timing of the central portion.

(2) changing the illumination timing of multiple illumination sources

As shown in FIG. 15, the irradiation unit 11 is provided with a plurality of irradiation sources 11a in the application direction, and by changing the irradiation timing of the plurality of irradiation sources 11a, the irradiation timing of the side end parallel to the application direction of the adhesive R is earlier than The illumination timing of the central part. According to this configuration, the irradiation timing can be changed to various forms depending on the change form of the adhesive R. Further, with respect to the irradiation source 11a of Fig. 15, the hollow circle is in an irradiation state, and the solid circle is in a non-irradiation state. Further, as shown in Fig. 16, by arranging the arrangement position of the irradiation source 11a at the side end from the central portion to the coating direction, the irradiation timing of the side end can be made earlier than the irradiation timing of the central portion.

The start irradiation timing and the terminal irradiation timing may be between the first timing and the second timing, respectively. The interval between the first timing and the second timing at the beginning, the interval between the first timing and the second timing of the terminal, and the starting timing and the terminal irradiation timing are not necessarily coincident at which time point between the first timing and the second timing. . The interval between the application unit 10 and the irradiation unit 11 is such that the start timing is the first timing and the second timing at the beginning, and the terminal irradiation timing is the first timing and the second timing of the terminal. The mode can be set. However, the interval between the irradiation unit 11 and the coating unit 10 may be changed during coating to adjust the timing of arrival to the terminal. For example, as shown in FIG. 16, in the movement at a constant speed, the terminal irradiation timing may be close to the second timing T2' by slowly moving in the coating direction, and slowly in the opposite direction. The movement causes the terminal illumination timing to be close to the first timing T1'. As described above, the irradiation timing control at the start end and the terminal includes the irradiation timing control to the side end, and can be limited to a finer shape.

The binder R may be applied as a surface to be bonded. For example, it may be applied so as to spread over the entire single surface of the workpiece S1, or may be applied to a portion not coated. Further, the binder R may or may not reach the edge of the workpiece S1. There may also be a portion where the binder R reaches a part of the edge of the workpiece S1 and does not reach the other portion.

That is, the adhesive R may be applied to at least one side of the field of view of the display device. For example, when the drive circuit portion is present on the side of the display region of the display panel, the adhesive R is not applied to the drive circuit portion, but the adhesive is applied in a planar manner in the display region without a seam.

In addition, although the slit nozzle is mentioned as a nozzle which discharges the adhesive agent R as an example, the application part 10 is not limited to the slit nozzle. For example, instead of the slit nozzle, the application portion 10 may be a multi-nozzle in which a plurality of needle-shaped nozzles are arranged, and the multi-nozzle may be applied in a plurality of stripe shapes to the adhesive R. Even if the adhesives R coated in a plurality of strips are spread and integrated to form a planar shape, they are the same as the application of the slit nozzles, and thus can be applied in a planar shape. For example, as shown in Fig. 18, the adhesive R from the coating portion 10 is applied in a plurality of stripes, and flows in the adhesive R of each stripe. After the irradiation, the irradiation portion 11 is irradiated with energy to temporarily harden it.

In this case, for example, in a portion other than the edge portion of the four sides coated in a rectangular shape, that is, at the center portion, it is necessary to wait for irradiation for temporary hardening before the strip-shaped adhesive R is integrated. In other words, in this case, the first timing of the center portion is different from the edge portion. Therefore, in the embodiment of the present application, in addition to the start end, the terminal, and the side end, the irradiation timing at which the temporary hardening irradiation is started is set to the center portion. Thus, the application of the multi-nozzle can also be limited to an appropriate shape.

The workpiece S1 and the workpiece S2 to be bonded together are not limited to the size, the shape, the material, and the like, as long as they are members of the display device that are the laminated body and are coated with the adhesive R on one surface. In other words, a display panel member including a display panel including a polarizing plate, a touch panel for operation, a protective panel for protecting a surface, a flat backlight, or a light guide plate for a backlight is bonded to each other to form a member for a display device. Just fine. As the display device, a display device having a flat plate-like workpiece such as a liquid crystal display or an organic EL display that is currently or in the future may be widely used.

Further, the pair of workpieces S1 and S2 which are bonded to each other may be one sheet or a plurality of sheets. A touch panel, a protective panel, a composite panel, or the like may be bonded to a laminated body in which a display panel, a driving circuit, and a printed circuit board are bonded together. In other words, the number of layers of the workpiece laminated as the member for the display device is not limited to a specific number.

The workpiece S1 to which the adhesive R is applied may be a display panel of a display device or a laminate including a display panel, or may be a protective panel, a touch panel, or a protective panel (composite panel) including a touch panel. But including polarizing plates or color filters, etc. The strain of the panel is large, and the individual differences of the strain are also large. The adhesive R can be easily and uniformly applied even if the strain of the simple panel is only a protective panel, a touch panel or a composite panel. Further, in the case of bonding a flat backlight or a light guide plate of a backlight or the like, it is also required to suppress the flow of the binder R to prevent the occurrence of voids. That is, the backlight or the light guide plate can also be understood as the workpiece S1 and the workpiece S2. The adhesive R may be applied to any one of a laminate, a backlight, and a light guide plate. However, in this case, it is preferably applied to a backlight or a light guide plate having a simple configuration.

Further, the binder R may be applied to both the workpiece S1 and the workpiece S2 to be bonded. When the adhesive R is applied to both the workpiece S1 and the workpiece S2, only the adhesive R coated on one side may be temporarily hardened, or the adhesive R coated on both may be temporarily cured. When the adhesive R is applied to both of them, the coating device may be separately provided, or both the workpiece S1 and the workpiece S2 may be sequentially supplied to one coating device.

Instead of moving the workpiece S1 side through the overtaking stage 12a, the application portion 10 and the irradiation portion 11 side may be moved to perform coating. In this case, when the application unit 10 is accelerated and decelerated, the irradiation unit 11 and the application unit 10 are independently decelerated and accelerated, and the constant speed can be maintained in the same manner as described above.

As described above, the irradiation unit 11 may fix the amount of irradiation energy per unit area of the adhesive R by changing the irradiation intensity. In other words, when the relative movement speed of the application portion 10 and the workpiece S1 is accelerated, the amount of irradiation energy is gradually increased, and when the relative movement speed is fixed, the amount of irradiation energy is fixed, and when the relative movement speed is decelerated, the irradiation is performed. The amount of energy is slowly decreasing. Therefore, there is no need to make the illumination energy Since the amount is uniform and the relative moving speed of the illuminating portion with respect to the workpiece S1 is maintained, and the illuminating portion 11 does not need to be independently movable with respect to the coating portion 10, the device configuration can be further simplified.

The change in the amount of the irradiation energy can be realized not only by the irradiation intensity indicating unit 73 changing the intensity of the light emission (output) of each of the irradiation sources 11a of the irradiation unit 11, but also by irradiating the plurality of irradiation sources 11a. This is achieved by varying the number of illumination sources 11a. For example, the presence or absence of light emission (output) or the light emission (output) intensity of the plurality of illumination sources 11a disposed in the longitudinal direction of the irradiation unit 11 is controlled. In addition, it is also possible to adjust the irradiation intensity, the irradiation width, and the like of the irradiation unit by setting the irradiation unit 11 so as to be movable up and down by the irradiation intensity instruction unit 73.

The configuration of the irradiation unit 11 is not limited to the configuration in which a plurality of irradiation sources 11a are arranged. The end of the optical fiber may be configured as the illuminating unit 11 by guiding the light from the irradiation source 11a separately configured independently of the stage 12a by the optical fiber. Further, the illuminating unit 11 may include an optical member that is irradiated in a line shape parallel to the slit of the application unit 10. As the optical member, for example, a collecting lens, a slit, or the like can be applied. The irradiation intensity can be adjusted by adjusting the intensity of the illumination source 11a, and can also be adjusted by the optical member. The irradiation width or the like can also be adjusted by the optical member. Further, a shielding portion such as a shutter or a mask that can selectively change the irradiation range may be provided.

The irradiation unit 11 may be a device that irradiates energy in a dot shape, and the irradiation unit 11 may be parallel to the slit of the coating unit 10 (direction orthogonal to the coating direction) by the scanning mechanism or approximately The direction of the scan is composed. In this case, the irradiation timing can be maintained between the first timing and the second timing. Flat surface.

Further, as exemplified above, the irradiation energy may be fixed by changing the irradiation intensity. In other words, when the relative movement of the application portion 10 and the workpiece S1 is accelerated, the irradiation intensity of the irradiation portion 11 is increased, and when the relative movement speed is fixed, the irradiation intensity is fixed, and when the relative movement is decelerated, the irradiation intensity is lowered. Thereby, the irradiation energy per unit area on the irradiation site can also be made constant. Further, instead of moving the irradiation unit 11, the plurality of irradiation sources 11a may be sequentially illuminated in the application direction. Thereby, the simplification of the mechanism can be achieved.

When the interval between the irradiation portion 11 and the application portion 10 is such that the flat surface of the bonding surface of the adhesive R is generated and the irradiation can be started before the collapse occurs, the irradiation can be continuously continued without stopping the irradiation temporarily. . When the uniformity of the irradiation energy is not strictly required, the control of the application unit 10 and the stage 12a is not limited to the speed control and the discharge amount control as long as the start end irradiation timing and the terminal irradiation timing can be set as described above. Shape.

The support of the workpiece S1 on the stage 12a of the adhesive coating apparatus 1 can be stabilized by all holding mechanisms that may be utilized currently or in the future, such as vacuum chucks, electrostatic chucks, mechanical chucks, adhesive chucks, and the like. A variety of holding mechanisms can also be used in combination.

The type of the binder R to be used is not limited to the ultraviolet curable resin. It is usually a resin which is hardened by irradiation with electromagnetic waves or heat, but any adhesive which may be utilized currently or in the future may be used and is an adhesive which is hardened by irradiation energy. In this case, the irradiation unit can be changed to an irradiation device, a heating device, a drying device, or the like of various infrared rays or radiation depending on the type of the binder.

1‧‧‧Binder coating device

2‧‧‧Fitting device

3‧‧‧ Hardening device

4‧‧‧Transporting device

5‧‧‧Loader

6‧‧‧ Unloader

7‧‧‧Control device

100‧‧‧Manufacturing device for display device

L‧‧‧Components for display devices

S1, S2‧‧‧ workpiece

Claims (13)

An adhesive coating device that applies a binder to at least one of the pair of workpieces in order to apply a binder to a pair of workpieces constituting the display device via an adhesive that is hardened by irradiation energy, and is characterized in that: a portion that applies a binder to the workpiece while moving relative to the workpiece; and an illuminating portion that temporarily cures the adhesive by irradiating energy to the adhesive applied by the coating portion; and the illuminating portion is on the bonding surface of the adhesive The timing of the irradiation energy is set between the first timing that is flat and the second timing that collapses at the bonding surface. The adhesive application device according to claim 1, wherein a timing at which the irradiation unit reaches the irradiation position is set between the first timing and the second timing. The adhesive application device according to claim 1, wherein the irradiation timing of the irradiation unit is set to a start end irradiation timing, from the start of application of the adhesive to the irradiation of the start end of the application by the irradiation unit; And the terminal irradiation timing is from the end of the application of the adhesive to the irradiation of the end portion of the coating by the irradiation unit. The adhesive coating apparatus according to any one of claims 1 to 3, wherein the first timing of the terminal including the application of the adhesive is a timing at which the coating is applied by the coating The adhesive on the workpiece side caused by the movement of the portion and the coating portion The adhesive on the side is broken, and the protruding portion generated by the adhesive on the workpiece side disappears. The adhesive application device according to any one of claims 1 to 4, further comprising the second timing of the beginning and the end of the application of the adhesive to form a ridge on the bonding surface of the adhesive. Timing. The adhesive application device according to any one of claims 1 to 5, further comprising the first timing and the second timing of the side end parallel to the application direction of the adhesive, before bonding The timing of the beginning of the coating or the central portion of the terminal. The adhesive application device according to claim 3, wherein the irradiation timing of the side end parallel to the application direction of the adhesive is set to be the same as the start end irradiation timing and the terminal irradiation timing. At least one of the different timings. The adhesive application device according to any one of claims 1 to 7, wherein the higher the viscosity of the adhesive, the longer the time from the start of application to the first timing and the second timing The later the viscosity of the adhesive is, the earlier the time from the start of coating to the first timing and the second timing is advanced. The adhesive application device according to any one of claims 1 to 8, wherein the illuminating portion has a plurality of irradiation sources that irradiate energy, and the irradiation timing of the plurality of irradiation sources is bonded to each other. The time at which the application site of the agent is irradiated differs in the manner in which the time difference occurs. The adhesive according to any one of claims 1 to 9 In the coating apparatus, the irradiation unit has a plurality of irradiation sources that irradiate energy, and is configured to move a part of the plurality of irradiation sources independently from the other irradiation sources so that a time difference occurs in a time at which the application portion of the adhesive reaches the application portion. The adhesive application device according to any one of claims 1 to 10, wherein the application portion and the irradiation portion are variably spaced apart from each other. A manufacturing apparatus for a member for a display device, comprising: the adhesive coating device according to any one of claims 1 to 11, wherein at least one of a pair of workpieces constituting the display device is provided Coating a binder that is hardened by irradiation energy; a bonding device that bonds the pair of workpieces by the applied adhesive; and a curing device that causes the pair that has been attached to the bonding device The adhesive of the workpiece is hardened; and the conveying device conveys the pair of workpieces between the adhesive coating device, the bonding device, and the curing device. A method for manufacturing a member for a display device, wherein a pair of workpieces constituting the display device are bonded together via a binder that is cured by irradiation energy, wherein the coating portion is moved relative to the workpiece to apply a binder to the workpiece; The adhesive temporarily disperses the adhesive between the first timing at which the bonding surface of the adhesive is flat and the second timing at which the bonding surface collapses by irradiating energy to the adhesive applied by the coating portion. Hardening; bonding the pair of workpieces by the temporarily hardened adhesive; and hardening the adhesive of the pair of workpieces that are attached.