JP2017107192A - Apparatus and method for manufacturing member for display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and a method for manufacturing a member for a display, which can prevent unfilling of adhesive, and remaining of a portion where the adhesive is not cured, in a display area, while preventing squeeze-out of the adhesive.SOLUTION: An apparatus 100 for manufacturing a member for a display includes: a bonding portion 1 for bonding a pair of workpieces W1, W2 to form the display, one of the workpieces W1, W2 having a print frame B which defines a display area D, through adhesive R that is cured by irradiation of energy; and an irradiation portion 2 that projects the energy, while switching states from a first irradiation state where the energy is projected to such an area that only an edge portion, as for the adhesive R reaching outside the display area D between the bonded workpieces W1, W2, is irradiated with the energy, to a second irradiation state where the energy is projected to such an area that the energy is incident inside the edge portion of the adhesive.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a manufacturing apparatus and a manufacturing method for a display device member.

  In general, a flat display device represented by a liquid crystal display or an organic EL display, that is, a so-called flat panel display includes a display panel and other work incorporated in a housing. Other works include a touch panel for operation, a cover panel for protecting the surface, a backlight, a light guide plate for the backlight, and the like.

  These workpieces are incorporated into the casing individually or in a state of being laminated in advance. For example, what was comprised as a composite panel which laminated | stacked the touch panel on the protective cover may be used.

  A display panel in which a touch panel function is incorporated may be used. As described above, there are various types of workpieces. Hereinafter, a plurality of workpieces constituting the display device are referred to as a display device member.

  When such a gap exists between the workpieces stacked as the display device member, the visibility of the display surface of the display is lowered due to the reflection of external light. In order to cope with this, each work is bonded and laminated via an adhesive to fill a gap between the works.

JP 2014-186170 A

  Currently, there is a strong demand for display devices to enlarge only the display area while maintaining the same overall size. For this reason, for example, in the cover panel laminated on the display panel, the width of the print frame that defines the display area needs to be very narrow. The printing frame is formed so as to border the outer edge of the cover panel with a light-shielding material. A translucent area surrounded by the inner edge of the printing frame forms a display area.

  This display area is slightly smaller than the display panel. The cover panel is laminated on the display panel via an adhesive so that the outer edge of the display panel overlaps the print frame outside the display area. Thereby, the outer edge of the display panel is prevented from being visually recognized from the display area.

  However, when an unfilled region of adhesive remains in such a display region, the boundary with the filled region impairs the visibility of the display screen. For this reason, unfilling of the display area must be avoided. On the other hand, the adhesive sticking out from the outer edge of the display panel must be avoided because it affects the surroundings. For this reason, the edge part of an adhesive agent must be stored in the very narrow width | variety of a printing frame.

  There are various methods for bonding workpieces through an adhesive. As an example, there is a method of superimposing one of the workpieces on which the adhesive has been applied in the form of dots or lines on the other workpiece. By applying pressure to the other stacked workpiece, the adhesive spreads toward the outer edge of the workpiece, so that an adhesive layer is formed between the workpieces.

  At this time, the adhesive that has reached the edge of the workpiece may further protrude from the edge. When such protrusions occur, a process for scraping off the adhesive after curing is required, which increases production costs.

  In order to cope with this, as shown in Patent Document 1, the edge of the adhesive is cured by irradiating the adhesive between the pair of works with ultraviolet rays obliquely from below. It has been proposed to prevent protrusion from the part.

  However, in the above-described conventional technology, the irradiated ultraviolet rays may be incident from the side surface of the workpiece. When ultraviolet rays are incident from the side surface of the workpiece in this way, the ultraviolet rays are reflected inside the workpiece and propagate inward. Then, since the adhesive before reaching the outer edge of the workpiece is cured by being irradiated with ultraviolet rays, the expansion of the adhesive stops. For this reason, an unfilled location may remain in the display area.

  The present invention has been proposed in order to solve the above-described problems. The purpose of the present invention is to prevent unfilled adhesive and uncured portions of the adhesive in the display area while preventing the adhesive from protruding. An object of the present invention is to provide a manufacturing apparatus and a manufacturing method of a member for a display device that can prevent the remaining.

  In order to achieve the above object, a manufacturing apparatus for a display device member according to the present invention is a pair of workpieces constituting a display device, one of which has a frame defining a display area by irradiation of energy. For the adhesive that has reached the outside of the display area between the pasted part and the pasted work through the adhesive to be cured, the energy is applied to the area where the energy is irradiated only on the edge part. There is an irradiation unit that switches from the first irradiation state to a second irradiation state that irradiates energy and irradiates the energy in a region where the energy is incident inside the edge of the adhesive.

  The irradiation unit includes an irradiation member whose direction of energy to be irradiated is inclined to the bonding surface side of one workpiece with respect to a direction parallel to the plane of the workpiece, and an irradiation region of energy by the irradiation member. And a switching unit that switches between the first irradiation state and the second irradiation state.

  The switching unit approaches the side surface of the workpiece to block the energy from the irradiation member to be in the first irradiation state, moves away from the side surface of the workpiece, and transfers the energy from the irradiation member to the workpiece. You may have the shielding part made into the said 2nd irradiation state by making it inject from a side surface.

  The shielding unit may include a shutter that moves between a closed position that approaches the side surface of the workpiece and an open position that moves away from the side surface of the workpiece, and an opening / closing mechanism that drives the shutter.

  The shielding portion may be disposed only at a position corresponding to a side surface of the workpiece on which energy from the irradiation member is incident.

  The switching unit includes a shielding unit configured to block the energy from the irradiation member to be the first irradiation state, and the second irradiation state by irradiating the energy inside the edge of the adhesive. And a second irradiating member.

  You may have the additional irradiation part which irradiates energy to the whole said pair of workpiece | work made into the said 1st irradiation state.

  The shutter is provided corresponding to one of the pair of workpieces, and has a second shutter that blocks energy from the irradiation member with respect to the other workpiece. There may be provided an opening / closing mechanism for moving between a closed position where energy is blocked by approaching the end face of the workpiece and an open position where energy is incident away from the end face of the other workpiece.

  The irradiation unit may include an irradiation head capable of adjusting an angle, and may include a conversion unit that converts a direction of energy irradiated by the irradiation head.

  An invention in which a manufacturing apparatus for a display device member as described above is regarded as a manufacturing method is also an embodiment of the present invention.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing apparatus and manufacturing method of the member for display apparatuses which can prevent the unfilling of the adhesive agent in a display area | region and the remaining of the unhardened part of an adhesive agent are prevented, preventing the protrusion of an adhesive agent. it can.

It is a perspective view of the manufacturing apparatus of the member for display devices of an embodiment. It is a partial cross section figure of the manufacturing apparatus of the member for display apparatuses of FIG. It is a fragmentary perspective view of the state in which the display panel was mounted in the manufacturing apparatus of the member for display apparatuses of FIG. It is sectional drawing which shows a 1st irradiation state. It is sectional drawing which shows a 2nd irradiation state. It is the top view (A) which shows the cover panel of embodiment, the top view (C) which shows a display panel, and sectional drawing (B) which shows both. It is explanatory drawing which shows the application | coating aspect of the adhesive agent to a cover panel. It is explanatory drawing which shows the state which set the cover panel and the display panel to the bonding part. It is explanatory drawing which shows the state which made the cover panel oppose the display panel. It is explanatory drawing which shows a 1st irradiation state and the start of bonding. It is sectional drawing which shows the 1st irradiation state in a short side part. It is sectional drawing which shows the 1st irradiation state in a flexible wiring board part. It is explanatory drawing which shows the crimping | compression-bonding process of a display panel. It is explanatory drawing which shows a 2nd irradiation state. It is explanatory drawing which shows the irradiation by an additional irradiation part. It is sectional drawing which shows the aspect of the protrusion of an adhesive agent. It is the bottom view (A) and top view (B) which show the protrusion of an adhesive agent, and an unfilled part. It is sectional drawing which shows the unfilled aspect of an adhesive agent. It is sectional drawing which shows the aspect of the adhesive agent of embodiment. It is the bottom view (A) and the top view (B) which show the aspect of the adhesive agent of embodiment. It is a graph which shows the measurement result of the amount of protrusion. It is sectional drawing which shows the aspect from which an irradiation angle differs. It is a graph which shows the measurement result of the hardening range at the time of changing an irradiation angle. It is sectional drawing which shows the 1st irradiation state of other embodiment. It is sectional drawing which shows the 2nd irradiation state of other embodiment. It is sectional drawing which shows the 1st irradiation state of other embodiment. It is sectional drawing which shows the 2nd irradiation state of other embodiment. It is sectional drawing which shows the 1st irradiation state of other embodiment. It is sectional drawing which shows the 2nd irradiation state of other embodiment.

Embodiments of the present invention (hereinafter referred to as the present embodiments) will be specifically described with reference to the drawings.
[Constitution]
[work]
The present embodiment is an apparatus for manufacturing a member for a display device by bonding a pair of works constituting the display device with an adhesive. The display device member includes a member having a display function such as a member in which a display panel and a cover panel are laminated, and a member having no display function only by the member, such as a member in which a cover panel and a touch panel are laminated. included. There are various types of workpieces constituting the display device member, such as a display panel, a touch panel, a cover panel, a backlight, and a light guide plate thereof, and any of them may be combined.

  However, at least one of the workpieces to be processed by this apparatus has a frame that defines a display area. Moreover, the workpiece | work which has a frame is a material which permeate | transmits energy, such as glass and resin, and is a member which the energy which injected from the side surface reflects and advances inside. In the following description, a case will be described in which one of the pair of workpieces to be bonded is a cover panel having a light-shielding print frame as a frame that defines a display area. However, the work is not limited to the cover panel as long as the work has such a frame. Note that the “display area” in this embodiment is not a displayable area of the display panel but an area in which display content can be visually recognized from the outside.

[adhesive]
The adhesive is a resin that is cured by energy irradiation. For example, an ultraviolet (UV) curable resin, a thermosetting resin, and other resins that are cured by energy such as electromagnetic waves and radiation are conceivable. Further, it may be a resin that is cured by a plurality of types of energy, such as a resin having the characteristics of a UV curable resin and a thermosetting resin. In this case, temporary curing can be performed by irradiation with UV light, and main curing can be performed by thermal curing. In this embodiment, a case where a UV curable resin is used will be described.

[Manufacturing device for display device member]
As shown in FIGS. 1 to 3, the display device manufacturing apparatus 100 according to the present embodiment includes a bonding unit 1, an irradiation unit 2, an additional irradiation unit 3, and a control unit 4. Below, the structure of each part is explained in full detail.

(Pasting part)
The bonding unit 1 is a device that bonds a pair of workpieces W1 and W2 through an adhesive R. In the present embodiment, the bonding unit 1 performs bonding in the atmosphere. However, it can also be applied to bonding under reduced pressure, such as vacuum bonding.

  The bonding part 1 has the base 11, the 1st holding | maintenance part 12, and the 2nd holding | maintenance part 13 as shown in FIG. The base 11 is a table that supports the first holding unit 12 and the second holding unit 13. The first holding unit 12 is a device that holds one work W1. The first holding unit 12 includes a holding member 121 and a reversing mechanism 122. The holding member 121 is a member that holds one workpiece W1. The holding member 121 is a rectangular parallelepiped member, and has a holding surface 121a that is a flat surface that holds the workpiece W1. The workpiece W1 is held on the holding surface 121a on the surface opposite to the surface to which the adhesive R is applied. The holding surface 121a is formed with a suction hole 121b connected to a vacuum source (not shown), thereby constituting a vacuum chuck for sucking the workpiece W1.

  As shown in FIG. 2, the reversing mechanism 122 is a device that reverses the work W <b> 1 held by the holding member 121 and faces the second holding unit 13. When reversed in this way, the application surface of the adhesive R of the workpiece W1 faces the workpiece W2 held by the second holding portion 13.

  The reversing mechanism 122 includes a rotating part 122a and a supporting part 122b. The rotating part 122a is a device to which one side surface of the holding member 121 is connected, and the holding member 121 is rotated by a driving source (not shown). The support part 122b is a member that supports the rotating part 122a at a predetermined height. As shown in FIG. 1, the reversing mechanism 122 displaces the holding member 121 between a position where the holding surface 121a is horizontal and upward, and a position where the holding surface 121a is horizontal and downward as shown in FIG.

  The second holding unit 13 is a device that holds the other workpiece W2 and bonds it to the workpiece W1 held by the first holding unit 12. The second holding unit 13 includes a placement unit 131 and a drive unit 132. The mounting part 131 is a rectangular parallelepiped member. The upper surface of the mounting portion 131 is a horizontal and flat mounting surface 131a on which the workpiece W2 is mounted. The mounting surface 131a is formed with a suction hole 131b connected to a vacuum source (not shown), thereby constituting a vacuum chuck for sucking the workpiece W2. As shown in FIG. 2, the placement portion 131 is provided with a placement surface 131 a at a position where the holding surface 121 a of the holding member 121 is reversed and opposed.

  The drive unit 132 is a mechanism for positioning and raising / lowering the workpiece W2 with respect to the workpiece W1 by moving the placement unit 131. As the drive unit 132, a mechanism for moving the XYθ table up and down in the Z direction can be used. For example, a mechanism in which a linear slider that moves along a horizontal linear guide is overlapped with a configuration in which a ball screw that is rotated by a motor is driven in an orthogonal direction is used as a mechanism that displaces the mounting portion 131 in the XY directions. In addition, a mechanism for displacing the mounting portion 131 in the θ direction by a shaft that is rotated by a direct drive of a motor or a belt drive. Furthermore, a mechanism is provided that displaces the mounting portion 131 in the Z direction by an air cylinder that advances and retreats in a direction perpendicular to the plane of the workpiece W2 (hereinafter referred to as a vertical direction). However, the driving unit 132 may be any mechanism as long as the mechanism moves the mounting unit 131 in the XYZθ directions.

  When such a drive unit 132 raises the placement unit 131, the workpiece W2 placed on the placement unit 131 is pressed against the workpiece W1 held by the holding member 121 via the adhesive R. (See FIG. 10).

(Irradiation part)
The irradiation unit 2 is a device that switches energy from the first irradiation state to the second irradiation state and irradiates the adhesive R with energy. The first irradiation state is a state in which energy is irradiated to a region where energy is irradiated only on the edge of the adhesive R that has reached the outside of the display region between the bonded workpieces W1 and W2. The “edge portion” refers to a region in the vicinity of the inner side from the outermost edge. The “region where energy is applied only to the edge” refers to a region where the adhesive R is applied only to the edge and no energy is incident on the side surface of one workpiece W1. For this reason, the printing frame B, the workpiece W2, etc. may be irradiated. A 2nd irradiation state is a state which irradiates energy to the area | region where energy enters into the inner side rather than the edge part of the adhesive agent R. FIG.

  Moreover, the irradiation part 2 performs the temporary hardening process of the adhesive agent R between workpiece | work W1 and W2 by irradiation of the above energy. That is, the irradiation unit 2 sets a part of the adhesive R in a “temporary curing” state that does not lead to complete curing. In the present embodiment, the process of completely curing the adhesive R between the workpieces W1 and W2 is performed by a main curing apparatus described later.

  The irradiation part 2 has the irradiation member 21, the support part 22, and the shielding part 23, as shown in FIGS. As shown in FIG. 2, the irradiation member 21 is a member whose direction of energy to be irradiated is inclined toward the bonding surface side of the workpiece W1 with respect to a direction parallel to the plane of the workpieces W1 and W2. The energy irradiated by the irradiation member 21 is, for example, UV light.

  The irradiation member 21 can be, for example, a member that irradiates UV light from a light emitting element such as a lamp or LED. The irradiation member 21 irradiates UV light so that an irradiated surface is formed along the edge of the adhesive R between the workpieces W1 and W2. As a more specific example, the irradiation member 21 can be configured by an irradiation head 210 and an optical fiber 211. The irradiation head 210 has a lens at the tip, and emits UV light guided from a light source (not shown) from the lens to irradiate a predetermined range. Since the irradiation head 210 performs the energy irradiation from the inclined direction as described above, the axial direction thereof is inclined with respect to the direction parallel to the plane of the workpieces W1 and W2. The inclination angle may be an angle at which UV light is irradiated to the edge of the adhesive R that has reached the outside of the display area between the bonded workpieces W1 and W2. For example, when the width of the print frame is very narrow, it is conceivable that the print frame is set to 90 ° with respect to the direction parallel to the plane of the workpieces W1 and W2.

  The optical fiber 211 guides the UV light from the light source to the irradiation head 210 connected to one end. The other end of the optical fiber 211 is connected to a control box (not shown). The control box is provided with a light source such as an LED that outputs UV light to the optical fiber 211. The irradiation energy from the irradiation head 210 is adjusted to an amount necessary to temporarily cure the adhesive R. This amount of energy depends on the intensity and time of irradiation.

  A plurality of such irradiation units 2 are arranged in the circumferential direction of the workpieces W1 and W2. That is, a plurality of irradiation heads 210 with the irradiation axis inclined as described above are arranged along the long side and the short side of the second holding unit 13 at a position lower than the workpiece W2. The irradiation head 210 corresponding to each long side and each short side of the workpiece W2 is irradiated with energy of equal intensity along the edge of the adhesive R between the workpieces W1 and W2.

  The support part 22 is a member that supports the irradiation head 210 in the position and direction as described above. The irradiation head 210 is configured to be adjustable in angle. For example, the support part 22 includes a frame-like part 220 and a side wall part 221. The frame portion 220 is a rectangular parallelepiped member that supports the irradiation head 210 for each of the long side and the short side of the second holding unit 13. The side wall portions 221 are a pair of members that stand on the base 11 and support both ends of each frame-shaped portion 220. An arcuate guide hole 221 a is formed in the side wall portion 221. Bolts 221b inserted through the guide holes 221a are screwed into screw holes formed at both ends of the frame-shaped portion 220, and are fastened and fixed. Thereby, both ends of the frame-shaped portion 220 are supported and fixed so that the irradiation head 210 has a desired inclination angle.

  The shielding unit 23 is a switching unit that switches the irradiation region of energy by the irradiation member 21 between the first irradiation state and the second irradiation state. That is, the shielding unit 23 approaches the side surface of the workpiece W1 and blocks the energy from the irradiation member 21, thereby setting the first irradiation state in which irradiation from the side surface of the workpiece W1 is blocked, and away from the side surface of the workpiece W1. The second irradiation state in which the energy from the irradiation member 21 can enter also from the side surface of the workpiece W1 is set. Here, even if the switching is performed, the irradiation of the irradiation member 21 continues, so the irradiation of the edge of the adhesive R in the first irradiation state continues. Moreover, the shielding part 23 is arrange | positioned only in the position corresponding to the side surface of the workpiece | work W1 in which the energy from the irradiation member 21 injects. For example, as shown in FIGS. 1 and 3, since the print frame of the workpiece W1 is thin, it is provided only on the long side where energy is incident from the side surface, and is not provided on the short side.

  The shielding unit 23 includes a shutter 230 and an opening / closing mechanism 231. The shutter 230 moves between a closed position approaching the side surface of the workpiece W1 and an open position separating from the side surface of the workpiece W1. Two shutters 230 are provided corresponding to the two long sides of the workpiece W1. The shutter 230 includes a flat plate 230a and a reinforcing plate 230b. The flat plate 230a is a light-shielding rectangular plate. One side of the pair of flat plates 230a is in a direction parallel to the long sides of the workpiece W1 and the placement unit 131, respectively.

  The reinforcing plate 230b is a rectangular plate attached to the flat plate 230a. The edge of the reinforcing plate 230b on the placement portion 131 side is inclined so that the thickness decreases from the lower side toward the upper side, and is shorter than the edge portion of the flat plate 230a. For this reason, the edge part of the flat plate 230a protrudes from the edge part of the reinforcement board 230b, and is facing the mounting part 131. FIG.

  When the shutter 230 approaches the workpiece W1, as shown in FIG. 4, the edge of the flat plate 230a enters between the long side surface of the workpiece W1 and the irradiation member 21, so that the UV light from the irradiation member 21 is transferred to the workpiece W1. Does not reach the side of W1. On the other hand, when the shutter 230 is separated from the workpiece W1, as shown in FIG. 5, the UV light from the irradiation member 21 reaches the side surface of the workpiece W1, and the UV light is applied to the adhesive R through the inside of the workpiece W1. Guided inside.

  The shutter 230 only needs to be able to block the incidence of energy from the side surface of the workpiece W1. For this reason, “approaching” includes the case where the edge of the shutter 230 overlaps the workpiece W1 in a non-contact manner and the case where the edge overlaps the contact W1. Moreover, the case where it matches so that the side surface of the workpiece | work W1 may block | close the side surface of the shutter 230 is also included.

  The opening / closing mechanism 231 is a mechanism that drives the shutter 230. As shown in FIG. 2, the opening / closing mechanism 231 includes a drive unit 231a and a guide unit 231b. The drive unit 231a is a member that drives the shutter 230 in the horizontal direction between the open position and the closed position. The drive unit 231a is attached to a support plate 231c erected from the base 11, for example. As the drive unit 231a, for example, a cylinder can be used.

  The guide portion 231b is a mechanism that supports the shutter 230 and guides its movement. For example, the guide portion 231b is configured by providing a linear guide that supports the lower surface of the shutter 230 on a surface obtained by extending the upper end of the side wall portion 221 in the horizontal direction.

(Additional irradiation part)
The additional irradiation unit 3 is a device that irradiates energy to the entire adhesive R between the pair of workpieces W1 and W2 in the first irradiation state. As shown in FIG. 2, the additional irradiation unit 3 includes an irradiation member 31 and an elevating unit 32. The irradiation member 31 is provided above the second holding unit 13. The irradiation member 31 includes a plurality of optical fibers and lenses guided from a light source (not shown), and irradiates UV light downward from the tip. The optical fiber is connected to a control box (not shown). The control box is provided with a light source such as an LED that outputs UV light collectively on a plurality of optical fibers.

  The elevating unit 32 is a mechanism for elevating the irradiation member 31 above the workpieces W1 and W2 on the second holding unit 13. The irradiation member 31 moves the irradiation member 31 between the descending standby position and the irradiation position where the irradiation member 31 is lifted and uniformly irradiated with the UV light spread over the entire workpieces W1 and W2. As the raising / lowering part 32, a cylinder or a ball screw can be used, for example.

(Control part)
The control unit 4 is a device that controls the operation of each unit of the display device member manufacturing apparatus 100. For example, the control unit 4 controls the light emission timing and light emission intensity of the light source, the vacuum chuck, the reversing mechanism 122, the driving units 132 and 231a, the opening and closing mechanism 231, the lifting and lowering unit 32, the operation timing, the operation speed, the operation amount, and the like. Note that the control unit 4 also controls a coating device, a transport device, a pickup device, a main curing device, an imaging unit, and the like, which will be described later. Such a control unit 4 can be realized by a dedicated electronic circuit or a computer operating with a predetermined program.

  In addition, the control unit 4 includes a storage unit that stores information necessary for the processing of the present embodiment. Such information includes light emission timing, light emission intensity, operation timing, operation speed, operation amount, and the like. Furthermore, the control unit 4 includes an input device and an output device. The input device is a device such as a switch, a touch panel, a keyboard, and a mouse for an operator to input information necessary for processing of the present embodiment and information stored in the storage unit. The output device is a device such as a display, a lamp, and a meter for an operator to check the state of the present embodiment.

[Operation]
An example of the operation of the display device member manufacturing apparatus 100 having the above-described configuration will be described with reference to FIGS. 6 to 19 in addition to FIGS. In addition, each part in each figure, the position of the workpiece | work W1, W2, etc., a magnitude | size, etc. are only a convenient expression for making description easy to understand.

  As described above, there are various types of workpieces to be processed by the display device member manufacturing apparatus 100. Here, as shown in FIG. 6, a case is described in which a cover panel S <b> 1 as an example of a work W <b> 1 and a display panel S <b> 2 as an example of a work W <b> 2 are laminated together with an adhesive R to constitute a display device member. To do.

  There are various types and shapes of the cover panel S1, but in the present embodiment, as shown in FIGS. 6A and 6B, a rectangular cover panel S1 larger than the display panel S2 is used. That is, the workpieces W1 and W2 to be bonded in the present embodiment have such a size that the outer edge of the workpiece W2 fits in the outer edge of the workpiece W1. On one surface of the cover panel S1, a light-shielding printing frame B having a predetermined width is formed so as to border the outer edge. A region surrounded by the inner edge of the printing frame B forms a display region D. The display area D is slightly smaller than the outer edge of the display panel S2.

  A space between the inner edge of the printing frame B and the outer edge of the display panel S2 is a control width d1 in which the edge of the adhesive R is to be accommodated. When the edge portion of the adhesive R spreading outward at the time of bonding stops inside the control width d1, an unfilled region is generated. When the edge of the adhesive R goes out of the control width d1, it protrudes. For example, the print frame B has a longer side width d3 narrower than a shorter side width d2. That is, the distance from the inner edge of the printing frame B on the short side to the outer edge of the cover panel S1 is long, and the distance from the inner edge of the printing frame B on the long side to the outer edge of the cover panel S1 is short. As described above, on the short side where the width d2 of the printing frame B is long, the side surface of the workpiece W1 is located outside the irradiation range of the irradiation member 21 whose irradiation direction is directed inward. For this reason, the printing frame B having a light shielding property blocks the incidence of energy into the workpiece W1, and the energy does not enter from the side surface of the workpiece W1 (see FIG. 11). On the other hand, on the long side where the width d3 of the printing frame B is short, the side surface of the workpiece W1 is located on the inner side of the irradiation range of the irradiation member 21 whose irradiation direction is directed inward. For this reason, the printing frame B having a light shielding property partially blocks energy from entering the work W1, but energy enters from the side surface of the work W1 (see FIG. 5).

  In the illustrated example, the display area D is a rectangle, but may be a polygonal shape such as a pentagon or a hexagon, a circle, an ellipse, or a combination of a curve and a straight line. In FIGS. 6A and 6B, the printing frame B is shown with a predetermined thickness, but in actuality, the thickness of the printing frame B is between the cover panel S1 and the display panel S2. It is sufficiently smaller than the thickness of the adhesive R intervening.

  There are various types of display panel S2, such as a liquid crystal panel and an organic EL panel, and the shapes thereof are also various. Here, as shown in FIGS. 6B and 6C, a rectangular liquid crystal panel is used. In addition, a polarizing plate P is laminated on the display panel S2. Further, a flexible printed circuit (FPC) F protruding outward is attached to one short side of the display panel S2.

  In the display device member manufacturing apparatus 100 of this embodiment, the adhesive R is applied to the cover panel S1 in advance by a coating device (not shown). The application shape and the application range are not limited to specific ones, and various ones are conceivable. For example, as shown in FIG. 7, there exists a mode applied to a shape like a fish bone. Specifically, a cross line extending in the long side direction and the short side direction is applied so as to intersect at the center of the region corresponding to the display panel S2. Furthermore, lines extending toward the four corners from both ends of the line crossing the long side direction are applied.

  The display panel S2 as described above and the cover panel S1 coated with the adhesive R are transported by a transport device (not shown) and set to the first holding unit 12 and the second holding unit 13 by a pickup device. . That is, as shown in FIG. 8, the cover panel S1 is placed on the holding surface 121a of the holding member 121 of the first holding unit 12 with the surface coated with the adhesive R facing up, and is adsorbed by the vacuum chuck. Retained. The display panel S2 is placed on the placement surface 131a of the placement portion 131, and is sucked and held by a vacuum chuck.

  In addition, since a general apparatus can be used for a coating device, a conveyance apparatus, a pick-up apparatus, etc., illustration and description are abbreviate | omitted. However, the coating device may be a device that applies the adhesive R to the cover panel S <b> 1 held by the holding member 121.

  From such a state, the irradiation member 31 of the additional irradiation unit 3 in the standby position is moved to the irradiation position by the elevating unit 32. And the inversion mechanism 122 of the 1st holding | maintenance part 12 reverses the cover panel S1 hold | maintained at the holding surface 121a by rotating the holding member 121. FIG. Then, as shown in FIG. 9, the application surface of the adhesive R of the cover panel S1 faces the display panel S2 on the placement unit 131.

  The placement unit 131 aligns the cover panel S1 and the display panel S2 by the driving unit 132. In this alignment, for example, the driving unit 132 moves the mounting unit 131 in the XYθ direction so that the reference position of the cover panel S1 and the display panel S2 is imaged by an imaging unit (not shown) and the deviation of the mutual reference position is eliminated. By moving to. The reference position is a mark attached to the display panel S2 and the cover panel S1 or a specific position. Note that general devices and techniques can also be used for the imaging unit and alignment.

  Next, in the long side portion of the display panel S2, the shielding unit 23 of the first irradiation unit 2 drives the shutter 230 by the opening / closing mechanism 231. Thereby, as shown in FIG. 10, the edge part of the flat plate 230a moves to the closed position which blocks | interrupts that the UV light from the irradiation head 210 injects from the side surface of cover panel S1.

  Then, the irradiation member 21 of all the circumferences starts to irradiate UV light from the irradiation head 210, thereby setting the first irradiation state. At this time, as shown in FIG. 4, the UV light is irradiated between the inner edge of the printing frame B and the outer edge of the display panel S2.

  Further, the UV light in the long side portion is blocked by the printing frame B and the shutter 230 and does not enter from the side surface of the cover panel S1. Also for the short side portion, as shown in FIG. 11, the UV light is irradiated between the inner edge of the printing frame B and the outer edge of the display panel S2. However, since the distance from the inner edge of the printing frame B to the outer edge of the cover panel S1 is long, the UV light is blocked from the printing frame B and does not enter from the side surface of the cover panel S1. Furthermore, as shown in FIG. 12, UV light is blocked by the flexible wiring board F at the portion of the short side portion where the flexible wiring board F is formed. For this reason, it does not irradiate between the inner edge of the printing frame B and the outer edge of the display panel S2, and does not enter from the side surface of the cover panel S1.

  With such irradiation, as shown in FIG. 10, the drive unit 132 raises the placement unit 131. Then, the display panel S2 moves to the cover panel S1 side and contacts the adhesive R. That is, the irradiation from the irradiation head 210 starts with the start of the operation of the mounting portion 131 and waits for the adhesive R to expand. As shown in FIG. 13, the adhesive R is pushed and spread toward the outer edge of the cover panel S1 by the rising display panel S2. And as shown in FIG.4 and FIG.11, about the short side part in which the long side part and the flexible wiring board F are not formed, the edge part of the adhesive agent R to expand is the inner edge of the printing frame B, and display panel S2. It is irradiated with UV light that has been continuously irradiated. For this reason, the edge part of the adhesive R is temporarily cured before it protrudes outside the display panel S2. However, if the irradiation is not uniform or the adhesive R spreads unevenly, there may be a portion that is uncured or weakly cured.

  And about the long side part, when the edge part of the adhesive agent R reaches the outer side of the inner edge of the printing frame B and the entire area of the display area D is filled with the adhesive agent R, the second irradiation state is changed from the first irradiation state. Is switched to the irradiation state. That is, the opening / closing mechanism 231 drives the shutter 230, and the edge of the flat plate 230a is placed at a position where UV light from the irradiation head 210 is allowed to enter from the side surface of the cover panel S1, as shown in FIG. Move. This switching is performed, for example, by setting in advance the timing at which the edge of the adhesive R reaches the outside of the inner edge of the printing frame B in the control unit 4. Then, as shown in FIG. 5, the UV light from the irradiation head 210 enters from the side surface of the cover panel S1, reflects inside the cover panel S1, and advances inward. Therefore, UV light spreads and irradiates the edge and further inner area of the adhesive R. For example, about 10 mm is irradiated from the side surface of the cover panel S1. For this reason, even in the first irradiation state, the UV light is irradiated to the inside by setting the second irradiation state even for the portion where the temporary curing is insufficient. Therefore, since the adhesive R around the print frame B and the entire periphery of the edge of the display panel S2 is temporarily cured, the display area D is not unfilled as shown in FIGS. In this way, the pressing by the placement unit 131 is maintained until it is temporarily cured.

  Furthermore, the vacuum chuck in the holding member 121 is stopped in a state where the vacuum chuck in the mounting portion 131 is maintained. Then, the reversing mechanism 122 rotates the holding member 121 to release the upper surface of the cover panel S1 as shown in FIG. Thereby, the cover panel S1 is released from pressing. The irradiation member 31 of the additional irradiation unit 3 at the irradiation position irradiates the entire cover panel S1 with UV light. Then, since UV light is irradiated from the display area D about the uncured portion of the short side portion and the portion where the flexible wiring board F is formed, the adhesive R is temporarily cured. By such two-stage irradiation, the adhesive R is temporarily cured over the entire circumference, so that the protrusion is prevented.

  If the adhesive R protrudes, as shown in FIGS. 16 and 17, the adhesive R comes out from the outer edge of the display panel S2, and the edge of the adhesive R does not fit in the control width d1. In FIG. 16, the protrusion width is indicated by d5. If there is such protrusion, a step of scraping off the adhesive R after curing is required, which is not preferable from the viewpoint of production cost. When the adhesive R is not filled in the display area D, the boundary line of the adhesive R remains in the display area D. In FIG. 18, the outermost edge of the width d4 formed at the edge of the adhesive R is within the control width d1, but the inner boundary line is within the display area D. . Such a boundary line is not preferable because it can be visually recognized from the outside.

  In the present embodiment, as shown in FIG. 19, the unfilled portion does not remain in the display region D, the protrusion is prevented, and there is no insufficient UV light irradiation. Align in a state close to.

  In this way, the display device member is configured by bonding the display panel S2 and the cover panel S1 together. This member for a display device is hereinafter referred to as a laminate. The stacked body is unloaded from the mounting portion 131 where the vacuum chuck is stopped, and is again conveyed by the conveying device. Subsequently, pick-up means (not shown) carries the laminate to the main curing device.

  In the main curing device, energy having a strength necessary for the main curing of the adhesive R is irradiated, and the main curing of the adhesive R is performed. Further, the laminated body is carried out from the curing device to the conveying device by the pickup means, and is subjected to other processing as necessary. The manufactured display device member is carried out of the display device member manufacturing apparatus 100 by the unloader.

[Test results]
The test results obtained by measuring the protruding amount of the adhesive and the curing range in the bonding according to the present embodiment as described above and the bonding according to the comparative example will be described.

(1) Amount of protrusion The test result of the amount of protrusion of the adhesive after bonding is as follows. Comparative Examples A and B are examples in which UV light irradiation is only in the first irradiation state, and Examples A and B are examples in which the first irradiation state is changed to the second irradiation state as described above. It is.

  The test results are shown in FIG. In FIG. 21, the vertical axis represents the amount of protrusion [mm] from the outer edge of the display panel S2 (corresponding to d5 in FIG. 16), and the horizontal axis represents the elapsed time [sec] after release from the pressing. As is clear from FIG. 21, in Comparative Examples A and B, the protrusion occurred with the passage of time, and the amount thereof gradually increased. On the other hand, in Examples A and B, no protrusion occurred even when time passed.

(2) Curing range The test results of the curing range due to the difference in the irradiation angle of UV light are as follows. In Comparative Example C, Example C, and Example D, as shown in FIG. 22, the irradiation angle X of the irradiation axis X of the UV light was irradiated with respect to the direction orthogonal to the plane of the cover panel S1, respectively. It is an example. The inclination angles are 90 ° for Comparative Example C, 75 ° for Example C, and 40 ° for Example D. The side surface of the cover panel S1 was covered with a light shielding tape T. For this reason, UV light does not enter from the side surface of the cover panel S1. However, in Comparative Example C, UV light enters from the edge of the adhesive R toward the inside. In Example C and Example D, UV light is irradiated only on the edge of the adhesive R as in the above embodiment. The irradiation time was set to three types of 10 [sec], 30 [sec], and 60 [sec].

  The test results are shown in FIG. In FIG. 23, the vertical axis represents the curing range [mm] indicating the maximum distance from the outer edge of the display panel S2 to the inner side of the region where the adhesive R is cured, and the horizontal axis represents the irradiation angle indicating the irradiation angle. Angle [°]. As is clear from FIG. 23, in Comparative Example C, the curing range is 0.5 mm and 1 mm, and the curing is performed in a wide range on the inner side. For this reason, if UV light is irradiated from the edge of the adhesive R toward the inside at an early stage when the adhesive R expands, the adhesive R can be cured before being filled into the display region D. There is sex. On the other hand, in Example C and Example D, the curing range is 0.1 mm, and the curing range is very narrow. For this reason, the edge part of the adhesive agent R can be stored in the control width d1.

[Function and effect]
(1) The display device member manufacturing apparatus 100 of the present embodiment is a pair of a cover panel S1 and a display panel S2 constituting a display device, one of which includes a print frame B that defines a display area D. S1, the display panel S2 is bonded to the bonding portion 1 that is bonded through the adhesive R that is cured by energy irradiation, and the adhesive R that has reached the outside of the display area D between the bonded cover panel S1 and the display panel S2 On the other hand, from the first irradiation state in which energy is applied to the region where energy is applied only to the edge portion, the second irradiation state in which energy is applied to the region where energy is incident on the side surface of the cover panel S1. And an irradiation unit 2 that irradiates energy by switching.

  For this reason, when the adhesive R between the bonded cover panel S1 and display panel S2 reaches the outside of the display area D in the first irradiation state, energy is irradiated only on the edge portion and temporary curing is performed. To do. Then, by switching to the second irradiation state, energy is transmitted from the edge of the adhesive R to the inner side to be irradiated. Therefore, the portion that has not been cured in the first irradiation state is also temporarily cured. In this way, since the energy is irradiated to the inside of the cover panel S1 after the adhesive R has sufficiently expanded, the adhesive R is prevented from being unfilled in the display area D, and the adhesive R protrudes. Is also prevented. Accordingly, the quality of the product is improved, the yield is improved, and the process of scraping the protruding adhesive R is not required, so that the production cost is reduced. Further, in the first irradiation state, when the adhesive R does not sufficiently reach the region irradiated with energy or has not reached temporary curing to prevent the protrusion, the temporary curing is insufficient after the irradiation is completed. The adhesive R may flow from somewhere. However, since energy is irradiated to the inside of the cover panel S1 in the second irradiation state, the temporary curing is promoted and the adhesive R is prevented from protruding.

(2) The irradiation unit 2 is configured such that the direction of energy to be irradiated is inclined to the bonding surface side of the cover panel S1 with respect to the direction parallel to the plane of the cover panel S1, and the energy of the irradiation member 21 A switching unit that switches the irradiation region between the first irradiation state and the second irradiation state;

  For this reason, it can be set as the 1st irradiation state only by arrange | positioning the irradiation member 21 inclining, and it can be set as the 2nd irradiation state by the switch part.

(3) The switching unit approaches the side surface of the cover panel S1 and blocks the energy from the irradiation member 21 to enter the first irradiation state, away from the side surface of the cover panel S1, and transfers the energy from the irradiation member 21. It has the shielding part 23 made into a 2nd irradiation state by making it inject from the side surface of cover panel S1.

  For this reason, the shielding part 23 can switch the energy from the irradiation member 21 from the first irradiation state to the second irradiation state. Therefore, it is not necessary to separately prepare the irradiation member 21 that irradiates energy from different angles, so that cost and required space can be saved.

(4) The shielding unit 23 includes a shutter 230 that moves between a closed position that approaches the side surface of the cover panel S1 and an open position that is separated from the side surface of the cover panel S1, and an opening / closing mechanism 231 that drives the shutter 230. .

  For this reason, switching from the first irradiation state to the second irradiation state can be performed at high speed by opening and closing the shutter 230, so that even when the control width d1 is narrow, the expansion rate of the adhesive R can be accommodated. Thus, the temporary curing process can be appropriately performed.

(5) The shielding part 23 is disposed only at a position corresponding to the side surface of the cover panel S1 where energy from the irradiation member 21 enters.

  For this reason, about the part in which the side surface of cover panel S1 exists in the position where the energy from the irradiation member 21 does not enter, and the part from which the energy from the irradiation member 21 is interrupted by the flexible wiring board F, the shielding part 23 is used. There is no need to provide it, and cost and required space can be saved.

(6) It has the additional irradiation part 3 which irradiates energy to the whole adhesive agent of a pair of cover panel S1 and display panel S2 made into the 1st irradiation state.

  For this reason, about the part in which the side surface of cover panel S1 exists in the position where the energy from the irradiation member 21 does not enter, and the part from which the energy from the irradiation member 21 is interrupted by the flexible wiring board F, the additional irradiation part 3 Curing can be prevented.

[Other Embodiments]
The present embodiment is not limited to the above aspect.
(1) In the above-described embodiment, only the irradiation member 21 in the direction inclined with respect to the direction parallel to the plane of the workpiece W1 is used as the member that irradiates energy. However, as shown in FIG. 24 and FIG. 25, the shielding unit 23 and the second irradiation member 230 c may be provided as the switching unit. That is, the shielding part 23 which makes a 1st irradiation state by interrupting | blocking the energy from the irradiation member 21 is provided. Then, a second irradiation member 230c that is in a second irradiation state by entering energy is provided in a region where the energy is incident on the inner side of the edge of the adhesive R. The 2nd irradiation member 230c irradiates energy to the edge part of the adhesive agent R from the direction parallel to the plane of the workpiece | work W1, for example.

  In this aspect, as shown in FIG. 24, the shielding portion 23 blocks energy from entering the side surface of the work W <b> 1 until the edge of the adhesive R reaches the outside of the display area, and energy is applied to the edge of the adhesive R. It is set as the 1st irradiation state irradiated. Then, as shown in FIG. 25, when the edge of the adhesive R reaches the outside of the display area D, the second irradiation member 230c irradiates the energy, thereby setting the second irradiation state. Thereby, the unfilling in the display area D and the protrusion by an unhardened part can be prevented. In addition, in switching from the first irradiation state to the second irradiation state, the irradiation by the irradiation member 21 may be stopped or continued.

(2) In the above embodiment, the display panel S2 that is the workpiece W2 is shielded from UV light by the optical film of the polarizing plate P. Therefore, the display panel S2 is less affected by UV light irradiation, and is bonded in the first irradiation state. Only the edge of the agent R can be irradiated with UV light. However, when the display panel S2 is irradiated with UV light, there is some influence of attenuated UV light unless the optical film can block 100% of UV light. For example, when the processing time of the process is long and UV irradiation is performed for a long time, there is a possibility that the condition that the integrated light amount affects the flow of the adhesive R is satisfied even if the light amount of UV is attenuated by the optical film. . However, it is very difficult to manage the irradiation range of the irradiation head 210 so that the display panel S2 is not irradiated.

  In order to cope with this, in addition to a shutter that blocks energy to one of the pair of workpieces, a second shutter that blocks energy to the other workpiece may be included. And it has an opening / closing mechanism that moves the second shutter between a closed position that blocks energy by approaching the end face of the other work and an open position where energy is incident away from the end face of the other work. Also good.

  More specifically, as shown in FIG. 26, a shutter 230A that shields the end surface of the cover panel S1 that is the workpiece W1 and a second shutter 230B that shields the end surface of the display panel S2 that is the workpiece W2 are provided. Similarly to the shutter 230 described above, the shutter 230A is moved from the closed position where the shutter 230A approaches the end surface of the cover panel S1 and shields light by the opening / closing mechanism 231 (see FIGS. 1, 2, 9, etc.) and from the end surface of the cover panel S1. Move horizontally between the open positions. The second shutter 230B is moved in the vertical direction by the opening / closing mechanism 231B between a closed position where light is shielded by approaching the end surface of the display panel S2 and an open position where the second shutter 230B is separated from the end surface of the display panel S2. The opening / closing mechanism 231B can be configured by, for example, a linear guide, a cylinder, or the like.

  In this aspect, as shown in FIG. 26, before the bonding, the irradiation of the UV light from the irradiation head 210 is started with the shutter 230A and the second shutter 230B being in the closed positions. With such irradiation, the display panel S2 is moved to the cover panel S1 side as in the above-described embodiment, and bonding via the adhesive R is started. The UV light is irradiated between the inner edge of the printing frame B and the outer edge of the display panel S2.

  The edge of the adhesive R that expands by bonding reaches between the inner edge of the printing frame B and the outer edge of the display panel S2, and receives the irradiation of UV light that has been continuously irradiated. For this reason, the edge part of the adhesive R is temporarily cured before it protrudes outside the display panel S2. At this time, the entrance of UV light through the cover panel S1 is prevented by the shutter 230A and the second shutter 230B. Moreover, irradiation of UV light to the end face of the display panel S2 is also prevented.

  27, when the edge of the adhesive R reaches the outside of the inner edge of the printing frame B and the entire area of the display area D (see FIG. 4) is filled with the adhesive R, the opening / closing mechanism 231 and 231B drive the shutters 230A and 230B to move them to the open position. This switching is performed, for example, by setting in advance the timing at which the edge of the adhesive R reaches the outside of the inner edge of the printing frame B in the control unit 4. Then, the UV light from the irradiation head 210 enters from the side surface of the cover panel S1, reflects inside the cover panel S1, and advances inward. Therefore, UV light spreads and irradiates the edge and further inner region of the adhesive R, and is temporarily cured. The UV light applied to the side surface of the display panel S2 also contributes to the temporary curing of the adhesive R.

  Thereby, while the same effect as said embodiment is obtained, energy can be incident not only from one work W1 but also from the other work W2 at an appropriate timing. That is, until the adhesive R reaches the outside, the irradiation of UV light to the side surface of the display panel S2 is shielded to suppress the influence on the flow, and after reaching the outside, the side surface of the display panel S2 is irradiated with UV light. Thus, temporary curing of the adhesive R can be promoted.

  Since the opening / closing operation of the shutter 230A and the second shutter 230B can be performed regardless of the positions of the holding member 121 and the mounting portion 131, the holding member 121 and the mounting portion 131 can be seamlessly moved from the bonding operation without being retracted. It is possible to shift to a process for preventing change with time, and to prevent the occurrence of a time lag.

  In addition, it is desirable that the shutters 230 and 230A and the second shutter 230B in each of the above-described embodiments use a process for preventing reflection, a UV cut material, or the like in order to prevent unintended reflection or scattering due to irradiation light. As a process for preventing reflection, for example, there is blackening such as a radiant process. In addition, the shape of the shutter 230A and the second shutter 230B is preferably a shape that does not hinder the UV light to be irradiated at the open position by using an inclined surface shape, a wedge shape, a tapered shape, or the like with the tip portion inclined. . For example, the side irradiated with UV light may be a surface inclined with respect to the vertical direction or a surface inclined with respect to the horizontal direction.

  In addition, it is preferable that the shutters 230 and 230A and the second shutter 230B can block or absorb 100% of light. In actual handling, the member thickness, shape, etc. of the shutters 230 and 230A and the second shutter 230B should be designed so as not to cause local light leakage due to distortion or deformation of the parts themselves during work such as mounting adjustment. It is.

  Further, local light leakage may occur due to the adjustment work of the apparatus such that the surface of the mounting portion 131 and the surfaces of the workpieces W1 and W2 are not horizontal or parallel. Therefore, it is preferable to eliminate the difference by the operator as a structure that can be easily attached to a fixed position, such as a positioning pin, by eliminating the adjustment by a long hole for these elements. In addition, when the operator frequently needs to change the positions of the shutter 230 and the second shutter 230B due to the change of the product type, etc., an accessory tool that considers workability, such as standardization of the maintenance state by the adjustment jig, is used. It is preferable to prepare.

  In addition, when the energy irradiation with respect to the workpiece | work W2 is not preferable, it can also be set as the structure which fixed the 2nd shutter 230B to the closed position. For example, the elements used in the polarizing plate of the LCD module are vulnerable to UV light. In this case, the second shutter 230B may be always in the closed position, or may be configured by a light shielding plate that does not move.

  Further, in this aspect, the irradiation direction of the irradiation head 210 is not necessarily variable. When the angle of the irradiation head 210 is variable, the UV light irradiation head 210 requires a wiring such as a power cable, and therefore, a wide movable space is required in the periphery for these operations. However, if the irradiation head 210 is fixed and the shutter as described above is provided, the overall configuration can be made compact.

(3) The irradiation head 210 may be configured to be adjustable in angle as in the above embodiment, and may include a conversion unit that converts the direction of energy irradiated by the irradiation head 210. More specifically, as shown in FIG. 28, a support portion 22A for supporting the irradiation head 210 for irradiating UV light so as to be adjustable in angle is provided. Moreover, the conversion part 240 which makes the irradiation position of UV light from the irradiation head 210 a desired site | part is provided.

  The conversion unit 240 includes a light guide member 241 and an optical member 242. The light guide member 241 is a tubular member in which an optical path that is a substantially L-shaped space through which UV light passes is formed. Such a light guide member 241 is provided corresponding to the length of the side of the display panel S2, that is, substantially the same length in the horizontal direction. One end of the optical path of the light guide member 241 is an entrance through which UV light emitted from the irradiation head 210 enters. The other end of the optical path of the light guide member 241 is an emission port that emits UV light to the edge of the adhesive R on the outer edge of the display panel S2. The light guide member 241 of this embodiment is configured such that the optical path on the entrance side is parallel to the horizontal direction, and the optical path on the exit side is parallel to the vertical direction. The optical member 242 is a mirror or a prism that is disposed at the corner of the optical path and converts the direction of incident UV light into an orthogonal emission direction. In addition, the light guide member 241 is arranged so that light emitted from the emission port is irradiated on the outer edge of the display panel S2 from directly below or substantially directly below.

  The irradiation head 210 has a horizontal direction in which the irradiation direction of the UV light is directed toward the entrance of the light guide member 241 and an inclination direction between the inner edge of the printing frame B and the outer edge of the display panel S2 by a driving mechanism (not shown). It is comprised so that rotation is possible. Note that the shape of the entrance of the light guide member 241 is preferably a structure that is in close contact with the irradiation head 210 or a structure that covers the leakage light in order to prevent unintended leakage light, reflection, and scattering. On the other hand, it is preferable that the exit port has a structure that limits the irradiation range in accordance with the size of the part to be irradiated with UV light. For example, the emission port is formed in a slit shape so that light is irradiated only to necessary portions. The direction of irradiation from the exit should be such that light is totally reflected at the glass end face so that no glass light guide occurs. In this example, the light is perpendicular to the workpieces W1 and W2.

  In this aspect, as shown in FIG. 28, before bonding, the irradiation head 210 is irradiated with UV light from the irradiation head 210 such that the irradiation direction of the UV light is in the horizontal direction toward the entrance of the light guide member 241. Start. While passing through the optical path of the light guide member 241, the UV light incident in the horizontal direction from the entrance is changed in direction by the optical member 242 and is emitted in the vertical direction from the exit to the outer edge of the display panel S <b> 2.

  Along with such irradiation, as described above, the display panel S2 is moved to the cover panel S1 side, and bonding via the adhesive R is started. When the edge of the expanding adhesive R reaches between the inner edge of the printing frame B and the outer edge of the display panel S2, it receives the irradiation of UV light that has been continuously irradiated. For this reason, the edge part of the adhesive agent R is temporarily hardened instantaneously at the outer edge of the display panel S2.

  As shown in FIG. 29, when the edge of the adhesive R reaches the outside of the inner edge of the printing frame B and the entire area of the display area D (see FIG. 4) is filled with the adhesive R, the drive mechanism Rotates the irradiation head 210 so that the UV light is inclined between the inner edge of the printing frame B and the outer edge of the display panel S2. This switching is performed, for example, by setting in advance the timing at which the edge of the adhesive R reaches the outside of the inner edge of the printing frame B in the control unit 4. Then, the UV light from the irradiation head 210 enters from the side surface of the cover panel S1, reflects inside the cover panel S1, and advances inward. Therefore, UV light spreads and irradiates the edge and further inner region of the adhesive R, and is temporarily cured.

  Thereby, while the same effect as said embodiment is acquired, temporary hardening of the edge part of the adhesive agent R and internal temporary hardening can be performed at an appropriate timing. That is, until the adhesive R reaches the outside, only the edge of the adhesive R is irradiated with UV light to maintain the flow, and after reaching the outside, the UV light is incident from an inclined direction to enter the adhesive R. Can be promoted. Further, even when the adhesive R is raised from the end of the display panel S2, UV light can be irradiated to prevent further protrusion.

  In addition, compared with a shutter or the like, the light irradiation area can be easily set to an appropriate area according to the product. Furthermore, there is no work such as operation alignment such as a shutter, and a stable result can be obtained regardless of the operator's adjustment skill.

  As described above, when energy irradiation to the workpiece W2 is not preferable, it is preferable to provide a configuration that shields the end portion of the workpiece W2 on the placement portion 131 side. For example, a part of the placement unit 131 or the conversion unit 240 may have a shape that covers the end of the workpiece W2, but it is necessary to have a structure that does not interfere with the irradiation of the adhesive R.

  As described above, each of the above-described embodiments satisfies the conflicting requirement of preventing the energy from being applied to the adhesive R during the bonding and making it incident after the bonding is completed. It cannot be realized only by adjusting the irradiation direction of the portion 2. In each of the above-described embodiments, UV light is incident from the end surfaces of the workpieces W1 and W2 during or after bonding with respect to the progress of protrusion due to a change over time caused by capillary action or the like after bonding. Thereby, the strip | belt-shaped temporary hardening area | region of a uniform width | variety can be obtained in the perimeter of the workpiece | work W1 and W2. Further, the bonded shape can be preserved by temporary curing by irradiation of the additional irradiation unit 3.

(4) By making the holding member 121 or the holding surface 121a a material that transmits energy, the irradiation by the additional irradiation unit 3 can be performed in a state where pressure is applied to the workpieces W1 and W2. Thereby, it can irradiate at high speed and can prevent protrusion.

(5) The shielding part 23 should just be provided in the location where the energy from the irradiation member 21 will inject from the side surface of the workpiece | work W1. For this reason, it does not ask whether it is a long side part or a short side part. The flexible wiring board F may also come out from the long side portion or may come out from the short side portion, and any mode can be applied.

(6) The optimum angle of the axis of irradiation by the irradiation member 21 varies depending on the width of the printing frame B, the control width, the position of the irradiation member 21, and the like. If the width of the printing frame B is large and the distance from the outer edge of the workpiece W2 to the outer edge of the workpiece W1 is long, it is difficult for energy to enter from the side surface. For this reason, if it is an angle which does not enter inside from the edge part of the adhesive agent R, the inclination angle with respect to horizontal may be comparatively small. When the width of the printing frame B is small and the distance from the outer edge of the work W2 to the outer edge of the work W1 is short, it is necessary to increase the inclination angle with respect to the horizontal. For example, since the distance of the long side portion of the smartphone is short, it is necessary to increase the inclination angle. Regarding the control width, the tilt angle may be decreased when the control width is long, but the tilt angle tends to be increased when the control width is short. In the first place, the optimum inclination angle differs depending on the position where the irradiation member 21 is provided, such as the distance of the irradiation member 21 with respect to the workpiece W1. In this way, an optimum angle is set according to various conditions.

(7) The opening / closing mechanism 231 of the shutter 230 of the shielding unit 23 is not limited to the above-described cylinder as the driving unit 231a in the case of a minute movement, for example. An electromagnetic solenoid or the like is also applicable.

(8) As described above, the UV light irradiation unit 2 is used as an apparatus for performing a curing process including provisional curing, and the UV adhesive resin R is used as the adhesive R. However, the present invention is not limited to this. For example, a device that irradiates energy such as heat, electromagnetic waves such as infrared rays, radiation including particle beams, and a corresponding cured resin may be used.

(9) The pair of workpieces to be bonded together may be one sheet or a plurality of stacked bodies. In other words, the number of workpieces stacked as the display device member is not limited to a specific number. The size of the pair of workpieces may be different as described above or the same size. That is, the present invention can be temporarily cured before the protrusion from the edge of the workpiece W1 or W2 occurs regardless of the size of the workpieces W1 and W2. As a member for a display device to be manufactured according to the present invention, there are various members such as a smartphone, a tablet terminal, a PC display, a TV, a display panel attached to other devices such as a vehicle and an aircraft. Conceivable. Among these, the present invention is particularly effective when applied to a display device member for a smartphone or a tablet terminal whose control width tends to be short.

(10) Specific values such as size and time applied to the embodiment are arbitrary and are not limited to specific numerical values. For example, the expansion rate of the adhesive R varies depending on the pressure of bonding, the amount of the adhesive R, the viscosity, the temperature, the application mode, and the like. For this reason, the drive start timing of the shutter 230 and the irradiation start timing of the second irradiation member 230c are not limited to those exemplified above. The start timing of energy irradiation by the irradiation unit 2 is not limited to the above-described mode, and may be started at any timing until the adhesive R reaches the edge of the workpiece W1 or W2. For example, the irradiation of the UV light from the irradiation head 210 is not limited to the one that starts when the operation of the mounting unit 131 starts. If the adhesive R squeezed between the workpieces W1 and W2 starts at some timing from when the ascending operation of the mounting portion 131 starts, it reaches the edge of the workpiece W2. Good.

(11) The irradiation position by the additional irradiation part 3 is not limited to whole irradiation, Partial irradiation may be sufficient. For example, the additional irradiation unit 3 may irradiate only the portion where it is difficult for energy to enter from the side surface of the workpiece W1 and the adhesive R is difficult to be temporarily cured even in the second irradiation state. In such a case, the additional irradiation unit 3 may be capable of spot irradiation with a narrow irradiation range, or may be a holding member 121 or a holding surface 121a using an energy transmission hole or a transmission member only in the irradiation part.

(12) The switching of the shielding part 23 or the control of the irradiation timing by the second irradiation member 230c is performed by the control unit 4 when the edge of the adhesive R reaches the outside of the inner edge of the printing frame B in advance. The time during which the adhesive R is filled in the entire region is set, and switching or irradiation may be performed at that timing. However, it is not limited to such time control. For example, a detection device such as a camera or a sensor for detecting the filling of the adhesive R to the entire display area D or the arrival of the adhesive R to the outer edge of the workpiece W2 is provided. And when a detection apparatus detects these, you may make it the switching of the shielding part 23 or the 2nd irradiation member 230c perform irradiation.

(13) The aspect of the irradiation member 21 is not limited to the above. For example, a plurality of cylindrical irradiation heads 210 whose irradiation directions are inclined toward the edge of the adhesive R may be arranged side by side along the periphery of the workpiece W2 or the like. Similarly, a plurality of light sources such as LEDs may be arranged side by side. As described above, when a plurality of light sources such as the cylindrical irradiation head 210 and the LEDs are arranged side by side, there may be a variation in the irradiation intensity of energy in the light source arrangement direction. In such a case, among the adhesive R that has reached the edge of the workpiece W2, in the portion where the energy irradiation intensity is weak, the adhesive R may not be sufficiently cured temporarily, and the fluidity may remain. There is. In the present invention, even in such a case, by switching to the second irradiation state, energy is diffused while being reflected inside the workpiece W1 and transmitted to the inner side away from the edge of the workpiece W2. Therefore, even in the first irradiation state, the portion that has not been sufficiently preliminarily cured is also temporarily cured.

(14) In the above aspect, the irradiation member 21 is provided on the base 11. That is, the irradiation head 210 is fixed to the base 11 so that the angle can be adjusted. However, the irradiation member 21 may be provided in the second holding unit 13. For example, the irradiation head 210 is fixed to the mounting portion 131 so that the angle can be adjusted. If it does in this way, the positional relationship of the workpiece | work W2 and the irradiation head 210 will not change by positioning of the workpiece | work W2. For this reason, the irradiation position to the edge part of the adhesive agent R becomes constant, and the variation in the amount of protrusion is further reduced.

(15) The energy irradiated by the irradiation unit 2 has a certain spread in the cross section. The direction of this energy can be specified by the axial direction which is basically a line connecting the centers of the cross sections or a direction parallel thereto. However, when the energy irradiation is radial, the direction of the irradiated energy may not exactly match the axial direction depending on the position of the cross section.

(16) In the above aspect, the apparatus is configured such that the plane of the workpiece W2 is horizontal. For example, the mounting surface 131a of the mounting unit 131 is in the horizontal direction. However, the direction of the workpiece W2 and the direction of the placement surface 131a are not necessarily horizontal.

DESCRIPTION OF SYMBOLS 1 Bonding part 2 Irradiation part 3 Additional irradiation part 4 Control part 11 Base 12 1st holding part 13 2nd holding part 21 Irradiation member 22, 22A Support part 23 Shielding part 31 Irradiation member 32 Lifting part 121 Holding member 121a Holding surface 121b Suction hole 122 Reversing mechanism 122a Rotating part 122b Supporting part 131 Mounting part 131a Mounting surface 132 Driving part 210 Irradiation head 211 Optical fiber 220 Frame-like part 221 Side wall part 221a Guide hole 221b Bolt 230, 230A Shutter 230a Flat plate 230b Reinforcing plate 230c Second irradiation member 230B Second shutter 231, 231B Opening / closing mechanism 231a Drive unit 231b Guide unit 231c Support plate 240 Conversion unit 241 Light guide member 242 Optical member 100 Display device manufacturing apparatus B Printing frame F Flexible Wiring board P Polarizing plate R Adhesive S1 Cover Panel S2 display panel T shielding tape W1, W2 workpiece X irradiation axis

Claims (10)

A pair of workpieces constituting a display device, one of which has a frame that defines a display region, a bonding portion that is bonded through an adhesive that is cured by energy irradiation, and
From the first irradiation state in which energy is irradiated only to the edge of the adhesive that has reached the outside of the display area between the bonded workpieces, it is inside the edge of the adhesive. An irradiation unit for irradiating energy by switching to a second irradiation state for irradiating energy to a region where energy is incident on
An apparatus for manufacturing a member for a display device, comprising: The irradiation unit is
Irradiation member in which the direction of energy to be irradiated is inclined to the bonding surface side of one workpiece with respect to the direction parallel to the plane of the workpiece;
A switching unit that switches an irradiation region of energy by the irradiation member between a first irradiation state and a second irradiation state;
The apparatus for manufacturing a member for a display device according to claim 1, comprising:   The switching unit approaches the side surface of the workpiece to block the energy from the irradiation member to be in the first irradiation state, moves away from the side surface of the workpiece, and transfers the energy from the irradiation member to the workpiece. The apparatus for manufacturing a member for a display device according to claim 2, further comprising a shielding portion that is brought into the second irradiation state by being incident from a side surface. The shielding part is
A shutter that moves between a closed position approaching the side surface of the workpiece and an open position separating from the side surface of the workpiece;
An opening / closing mechanism for driving the shutter;
The apparatus for manufacturing a member for a display device according to claim 3.   5. The display device member manufacturing apparatus according to claim 3, wherein the shielding portion is disposed only at a position corresponding to a side surface of the workpiece on which energy from the irradiation member is incident. . The switching unit is
A shielding portion that is in the first irradiation state by blocking energy from the irradiation member;
A second irradiation member that makes the second irradiation state by irradiating the energy inside the edge of the adhesive; and
The apparatus for manufacturing a member for a display device according to claim 2.   The display device member according to any one of claims 1 to 6, further comprising an additional irradiation unit that irradiates energy over the entire pair of workpieces in the first irradiation state. apparatus. A pair of workpieces constituting a display device, one of which has a frame defining a display area, a bonding step of bonding through an adhesive that is cured by energy irradiation,
From the first irradiation state in which energy is irradiated only to the edge of the adhesive that has reached the outside of the display area between the bonded workpieces, it is inside the edge of the adhesive. An irradiation step of irradiating the region where the energy is incident to the second irradiation state of irradiating the energy and irradiating the energy;
The manufacturing method of the member for display apparatuses characterized by including. The shutter is provided corresponding to one of the pair of workpieces;
A second shutter that blocks energy from the irradiation member with respect to the other workpiece;
An open / close mechanism that moves the second shutter between a closed position where the second shutter approaches the end surface of the other workpiece and blocks energy, and an open position where the energy is incident away from the end surface of the other workpiece; The manufacturing apparatus of the member for display apparatuses of Claim 4 characterized by these. The irradiation unit has an irradiation head capable of adjusting the angle,
The apparatus for manufacturing a member for a display device according to claim 1, further comprising a conversion unit that converts a direction of energy irradiated by the irradiation head.

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