TW201719601A - Manufacturing apparatus for display device components, and manufacturing method thereof including a laminating portion and an irradiating portion to adhere therebetween without gaps - Google Patents

Abstract

The present invention provides a manufacturing apparatus for display device components and a manufacturing method thereof, which can prevent the protrusion of the adhesive, and prevent no fillings of adhesives and the residues of the unhardened portion of the adhesives in the display region. The manufacturing apparatus includes a laminating portion and an irradiating portion. The laminating portion laminates workpieces with adhesives hardened by irradiation of energy. The workpieces are a pair of workpieces forming the display device, and one of them includes a printed frame that divides the display region. The irradiating portion that irradiates energy by switching from a first irradiation state to a second irradiation state. The first irradiation state is a state in which the energy is irradiated only to the area where the energy is irradiated to the region where the energy is applied to the edge of the workpiece. The second irradiation state is a state in which energy is irradiated onto a region where incident energy is closer to an inner portion than the edge of the adhesive.

Description

Manufacturing device for member for display device and manufacturing method

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

In general, a flat display device represented by a liquid crystal display or an electroluminescence (EL) display, that is, a so-called flat panel display, is a display panel and other workpieces. It is built into the inside of the frame. As other workpieces, there are a touch panel for operation, a cover panel for protecting a surface, a backlight, a light guide plate for backlighting, and the like.

These workpieces are loaded into the casing either alone or in a pre-laminated state. For example, a composite panel in which a touch panel is laminated on a protective cover may be used.

Moreover, for the display panel, a person who has a touch panel function is sometimes used. As described above, various types of workpieces are used. Hereinafter, a plurality of workpieces constituting the display device are stacked as a member for a display device.

When there is a gap between the workpieces stacked in such a member for the display device, the visibility of the display surface of the display is lowered due to external light reflection. In order to cope with this phenomenon, the respective workpieces are attached and laminated via an adhesive, and the gaps between the workpieces are filled. [Prior Art Literature]

[Patent Document] [Patent Document 1]: Japanese Patent Laid-Open Publication No. 2014-186170

[Problems to be Solved by the Invention] At present, there is a strong demand for the display device to maintain the overall size to be equal and to expand only the display area. Therefore, for example, in a cover panel laminated on a display panel, the width of the print frame dividing the display area must be very narrow. The print frame is formed by a light-shielding material that rims the outer edge of the cover panel. The light transmissive area surrounded by the inner edge of the printing frame forms a display area.

The 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 is superposed on the print frame outside the display area. Thereby, the outer edge of the display panel is prevented from being seen from the display area.

However, if an area in which the adhesive is not filled remains in such a display area, the boundary with the filled area may impair the visibility of the display screen. Therefore, it is necessary to avoid unfilling of the display area. On the other hand, the protrusion of the adhesive from the outer edge of the display panel also affects the surroundings and must be avoided. Therefore, the edge of the adhesive must be contained within a very narrow width of the print frame.

There are various methods for bonding workpieces via an adhesive. As an example, there is a method in which another workpiece is superposed on one of the workpieces to which the adhesive is applied in a dot shape or a line shape. By applying pressure to the other workpiece that overlaps, the adhesive is spread toward the outer edge of the workpiece, thus forming an adhesive layer between the workpieces.

At this time, the adhesive that reaches the edge of the workpiece sometimes protrudes from the edge. If such protrusion occurs, the step of removing the adhesive after hardening is required, resulting in a high production cost.

In order to cope with this, as disclosed in Patent Document 1, there is proposed a method of irradiating ultraviolet rays from a diagonally downward direction to an adhesive between a pair of workpieces, thereby hardening the edge portion of the adhesive to prevent the edge from the workpiece. Highlighted.

However, in the above-described prior art, the ultraviolet rays to be irradiated may be incident from the side surface of the workpiece. When ultraviolet rays are incident from the side surface of the workpiece, the ultraviolet rays are reflected inside the workpiece and transmitted to the inside. Thus, the adhesive before reaching the outer edge of the workpiece is hardened by ultraviolet irradiation, and thus the expansion of the adhesive is stopped. Therefore, there is a possibility that an unfilled portion remains in the display area.

The present invention has been made to solve the above problems, and an object thereof is to provide a manufacturing apparatus and a manufacturing method for a member for a display device, which can prevent protrusion of an adhesive and prevent unfilling of an adhesive in a display region. The uncured portion of the subsequent agent remains.

[Means for Solving the Problem] In order to achieve the above object, a device for manufacturing a member for a display device according to the present invention includes a bonding portion that bonds a workpiece via an adhesive that is hardened by irradiation of energy, and the workpiece is constructed. a pair of workpieces of the display device, wherein one of the devices has a frame for dividing the display region; and the illuminating portion switches the energy from the first irradiation state to the second irradiation state, wherein the first irradiation state is for the workpiece to be bonded An adhesive that reaches the outside of the display area and irradiates energy to a region where only the edge of the adhesive is irradiated, and the second irradiation state is such that energy is incident on the inner side of the edge of the adhesive. The area illuminates energy.

The illuminating unit may include: an illuminating member, the direction of the energy to be irradiated is inclined toward the bonding surface side of one of the workpieces with respect to a direction parallel to the plane of the workpiece; and the switching portion at the first irradiation The energy irradiation region of the irradiation member is switched between the state and the second irradiation state.

The switching portion may include a shielding portion that blocks energy from the illuminating member by approaching a side surface of the workpiece, thereby setting the first illuminating state and passing away from the workpiece The energy from the irradiation member is incident on the side surface from the side surface of the workpiece, and is set to the second irradiation state.

The shielding portion may include: a shutter that moves between a closed position near a side of the workpiece and an open position away from a side of the workpiece; and an opening and closing mechanism that drives the shutter.

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

The switching unit may include a shielding portion that is set to be in the first irradiation state by blocking energy from the irradiation member, and a second irradiation member that irradiates the energy to a binder The edge portion is located further on the inner side, and is set to the second irradiation state.

The method may include: adding an irradiation unit to irradiate the entire pair of the workpieces in the first irradiation state with energy.

It is also possible that the shutter is provided corresponding to one of the pair of workpieces, the manufacturing device for the display device includes a second shutter, and the second shutter blocks the other workpiece The manufacturing device for the display device member includes an energy from the illuminating member, and the opening and closing mechanism causes the second shutter to close the position of the end surface of the other workpiece to block energy. Moving between an open position where energy is incident away from an end face of the other workpiece.

The illuminating unit may include an illuminating head that is angularly adjustable, and the manufacturing device for the display device includes a converting unit that converts a direction of energy irradiated by the illuminating head.

The invention obtained as a manufacturing method of the manufacturing apparatus for a display device as described above is also an aspect of the present invention.

[Effects of the Invention] According to the present invention, it is possible to provide a manufacturing apparatus and a manufacturing method for a member for a display device, which can prevent the protrusion of the adhesive and prevent the unfilled portion of the adhesive in the display region from being unhardened portion of the adhesive. Remaining.

Embodiments of the present invention (hereinafter referred to as the present embodiment) will be specifically described with reference to the drawings. [Configuration] [Workpiece] In the present embodiment, a pair of workpieces constituting the display device are bonded together via an adhesive to manufacture a member for a display device. The member for a display device includes a member having a display function as a member in which a display panel and a cover panel are stacked, and includes a member in which the cover panel and the touch panel are laminated, and the display member is only the member and does not have a display. Functional components. As the workpiece constituting the member for the display device, there are various workpieces such as a display panel, a touch panel, a cover panel, a backlight, or a light guide plate, and any of the workpieces may be combined.

However, at least one of the workpieces to be processed in the apparatus is a workpiece having a frame that divides the display area. Further, the workpiece having the frame is a material that transmits energy such as glass or resin, and is a member that reflects light from the side surface and travels inside. In the following description, a case where one of the pair of attached workpieces is a light-shielding printing frame as a cover panel that divides the frame of the display area will be described. However, as long as it is such a framed workpiece, it is not limited to the cover panel. Further, the "display area" in the present embodiment is not a displayable area of the display panel, but an area in which the content can be displayed from the outside.

[Binder] The subsequent agent is a resin which is hardened by irradiation of energy. For example, an ultraviolet (UV) hardening resin or a thermosetting resin, and other resins which are hardened by energy such as electromagnetic waves or radiation are considered. Further, it may be a resin which is cured by a plurality of energies like a resin having properties of a UV-curable resin and a thermosetting resin. At this time, it is also possible to perform temporary hardening by irradiation of UV light, and to perform main hardening by thermal hardening. In the present embodiment, a case where a UV curable resin is used will be described.

[Manufacturing Apparatus of Member for Display Device] As shown in FIGS. 1 to 3 , the manufacturing apparatus 100 for a member for a display device according to the present embodiment includes a bonding unit 1 , an illuminating unit 2 , an additional illuminating unit 3 , and a control unit 4 . Hereinafter, the configuration of each unit will be described in detail.

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

As shown in FIG. 1 , the bonding unit 1 includes a base 11 , a first holding unit 12 , and a second holding unit 13 . The base 11 is a table that supports the first holding portion 12 and the second holding portion 13. The first holding portion 12 is a device that holds one of the workpieces W1. The first holding portion 12 has a holding member 121 and a reversing mechanism 122. The holding member 121 is a member that holds one of the workpieces W1. The holding member 121 is a member having a rectangular parallelepiped shape, and has a flat surface that holds the workpiece W1, that is, a holding surface 121a. The surface of the workpiece W1 opposite to the surface on which the adhesive R is applied is held by the holding surface 121a. On the holding surface 121a, an adsorption hole 121b connected to a vacuum source (not shown) is formed, and a vacuum chuck that adsorbs the workpiece W1 is formed.

The reversing mechanism 122 is a device that reverses the workpiece W1 held by the holding member 121 and faces the second holding portion 13 as shown in FIG. 2 . In the case of such reversal, the coated surface of the adhesive R of the workpiece W1 faces the workpiece W2 held by the second holding portion 13.

The reversing mechanism 122 has a rotating portion 122a and a supporting portion 122b. The rotating portion 122a is a device that is connected to one side surface of the holding member 121 and that rotates the holding member 121 by a driving source (not shown). The support portion 122b is a member that supports the rotating portion 122a at a predetermined height. By the reversing mechanism 122, the holding member 121 is displaced between the position where the holding surface 121a is horizontally upward as shown in FIG. 1 and the position which is horizontally downward as shown in FIG. 2 .

The second holding portion 13 is a device that holds the other workpiece W2 and attaches it to the workpiece W1 held by the first holding portion 12. The second holding portion 13 has a placing portion 131 and a driving portion 132. The placing portion 131 is a member having a rectangular parallelepiped shape. The upper surface of the mounting portion 131 is a horizontal and flat mounting surface 131a on which the workpiece W2 is placed. On the mounting surface 131a, an adsorption hole 131b connected to a vacuum source (not shown) is formed, and a vacuum chuck that adsorbs the workpiece W2 is formed. As shown in FIG. 2, the mounting portion 131 is provided at a position where the mounting surface 131a of the holding member 121 is opposed to the holding surface 121a of the holding member 121.

The driving unit 132 is a mechanism that moves and moves the workpiece W2 relative to the workpiece W1 by moving the placing unit 131. As the drive unit 132, a mechanism for moving up and down the XYθ table in the Z direction can be used. For example, a mechanism for displacing the placing portion 131 in the XY direction by superimposing the following configuration in the orthogonal direction is employed, which is a linear guide rail that is rotated by a ball screw that is rotated by a motor ( Linear guide) The moving linear slider is driven. Further, a mechanism for displacing the placing portion 131 in the θ direction by a shaft that is rotated by a direct drive or a belt drive of a motor is employed. Further, a mechanism for displacing the placing 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) is employed. However, the drive unit 132 may be any mechanism as long as it moves the placement unit 131 in the XYZθ direction.

When the driving unit 132 raises the placing unit 131, the workpiece W2 placed on the placing unit 131 is pressed to the workpiece W1 held by the holding member 121 via the adhesive R (see FIG. 10).

(Irradiation Unit) The irradiation unit 2 is a device that switches the first irradiation state to the second irradiation state to irradiate the adhesive R with energy. The first irradiation state is a state in which the adhesive R that reaches the display region outside the bonded workpieces W1 and W2 is irradiated with energy to the region where the energy is only irradiated to the edge of the adhesive R. In addition, the "edge portion" refers to a region near the inner side of the outermost edge. Further, the phrase "the region where the energy is irradiated only to the edge portion" refers to a region where the adhesive R is irradiated only to the edge portion, and energy is not incident on the side surface of one of the workpieces W1. Therefore, it is also possible to irradiate to the printing frame B, the workpiece W2, and the like. The second irradiation state is a state in which energy is incident on a region closer to the inner side than the edge portion of the adhesive R.

Further, the irradiation unit 2 performs the temporary hardening treatment of the adhesive R between the workpieces W1 and W2 by the irradiation of the energy as described above. That is, the illuminating unit 2 causes a part of the adhesive R to be in a "temporarily hardened" state that does not reach complete curing. Further, in the present embodiment, the treatment for completely curing the adhesive R between the workpieces W1 and W2 is performed by a main curing device to be described later.

As shown in FIGS. 1 to 3 , the illuminating unit 2 includes an illuminating member 21 , a support portion 22 , and a shielding portion 23 . As shown in FIG. 2, the irradiation member 21 is a member that is inclined toward the bonding surface side of the workpiece W1 with respect to the direction parallel to the planes of the workpieces W1 and W2. The energy irradiated by the illuminating member 21 is, for example, UV light.

The illuminating member 21 can be, for example, a member that illuminates UV light from a light emitting element such as a lamp or a light emitting diode (LED). The irradiation member 21 irradiates the UV light so as to form an illuminated surface along the edge of the adhesive R between the workpieces W1 and W2. Further, as a more specific example, the irradiation member 21 may include an irradiation head 210 and a fiber 211. The irradiation head 210 has a lens at the tip end, and emits UV light emitted from a light source (not shown) from the lens to be irradiated to a predetermined range. The irradiation head 210 is inclined in a direction parallel to the planes of the workpieces W1, W2 in order to perform energy irradiation in a direction inclined as described above. The inclination angle may be an angle at which the edge of the adhesive R that reaches the display region between the bonded workpieces W1 and W2 is irradiated with UV light. For example, in the case where the width of the printing frame is very narrow, it is considered that the direction parallel to the planes of the workpieces W1, W2 is set to 90°.

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

The irradiation unit 2 is provided in plurality along the circumferential direction of the workpieces W1 and W2. In other words, as described above, the irradiation head 210 in which the irradiation axis is inclined is disposed along the long side and the short side of the second holding portion 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 illuminates energy of uniform intensity along the edge of the adhesive R between the workpieces W1 and W2.

The support portion 22 is a member that supports the irradiation head 210 at the position and direction as described above. Further, the irradiation head 210 is configured to be angularly adjustable. For example, the support portion 22 has a frame portion 220 and a side wall portion 221 . The frame portion 220 is a member that supports the rectangular parallelepiped shape of the irradiation head 210 corresponding to each of the long sides and the short sides of the second holding portion 13 . The side wall portion 221 is a pair of members that are erected on the base 11 and support both ends of each frame portion 220. An arcuate guide hole 221a is formed in the side wall portion 221. A bolt 221b inserted into the guide hole 221a is screwed into a screw hole formed at both ends of the frame portion 220, and is fastened and fixed. Thereby, the irradiation head 210 supports both ends of the fixed frame-shaped portion 220 so as to have a desired inclination angle.

The shielding portion 23 is a switching portion that switches the energy irradiation region of the irradiation member 21 between the first irradiation state and the second irradiation state. In other words, the shielding portion 23 blocks the energy from the irradiation member 21 by approaching the side surface of the workpiece W1, and is configured to block the first irradiation state from the side surface of the workpiece W1 and to be away from the side surface of the workpiece W1. The energy of 21 can also be in the second illumination state incident from the side of the workpiece W1. Here, even if the switching is performed, the irradiation of the irradiation member 21 is continued, and therefore the irradiation toward the edge portion of the adhesive R in the first irradiation state continues. Further, the shielding portion 23 is disposed only at a position corresponding to the side surface of the workpiece W1 into which the energy from the irradiation member 21 is incident. For example, as shown in FIG. 1 and FIG. 3, since the printing frame of the workpiece W1 is thin, it is provided only on the long side where the energy is incident from the side surface, and is not provided on the short side.

The shielding portion 23 has a shutter 230 and an opening and closing mechanism 231. The shutter 230 moves between a closed position close to the side of the workpiece W1 and an open position away from the side of the workpiece W1. The shutter 230 is provided corresponding to two long sides of the workpiece W1. The shutter 230 has a flat plate 230a and a reinforcing plate 230b. The flat plate 230a is a light-shielding square-shaped plate. One side of the pair of flat plates 230a is a direction parallel to the long sides of the workpiece W1 and the mounting portion 131, respectively.

The reinforcing plate 230b is a square-shaped plate that is laminated on the flat plate 230a and mounted. The edge portion on the side of the mounting portion 131 of the reinforcing plate 230b is inclined so as to decrease in thickness from the lower side toward the upper side, and is shorter than the edge portion of the flat plate 230a. Therefore, the edge of the flat plate 230a protrudes from the edge of the reinforcing plate 230b toward the placing portion 131.

When the shutter 230 approaches the workpiece W1, as shown in FIG. 4, the edge of the flat plate 230a enters between the side surface of the long side of the workpiece W1 and the irradiation member 21, so that the UV light from the irradiation member 21 cannot reach the side surface of the workpiece W1. On the other hand, if the shutter 230 is away 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 guided to the inside of the adhesive R via the inside of the workpiece W1.

Further, the shutter 230 is only required to block the incident of energy from the side surface of the workpiece W1. Therefore, the term "proximity" includes both the case where the edge of the shutter 230 is non-contactly overlapped with the workpiece W1, and the case where the contact overlaps. Further, it is also included that the side surface of the shutter 230 closes the side surface of the workpiece W1.

The opening and closing mechanism 231 is a mechanism that drives the shutter 230. As shown in FIG. 2, the opening and closing mechanism 231 has 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, for example, a support plate 231c that is erected from the base 11. As the drive unit 231a, for example, an air cylinder can be used.

The guiding 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 the surface that extends the upper end of the side wall portion 221 in the horizontal direction.

(Additional Irradiation Unit) The additional irradiation unit 3 is a device that irradiates 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 has an irradiation member 31 and a lifting portion 32. The irradiation member 31 is provided above the second holding portion 13. The illuminating member 31 is provided with a plurality of optical fibers and lenses which are led out from a light source (not shown), and irradiates UV light downward from the front end. The optical fiber is connected to a control box (not shown). In the control box, a light source such as an LED that uniformly outputs UV light to a plurality of optical fibers is provided.

The lifting portion 32 is a mechanism that raises and lowers the irradiation member 31 above the workpieces W1 and W2 on the second holding portion 13. The elevation member 32 moves the irradiation member 31 between the lowered standby position and the irradiation position where the UV light is uniformly irradiated throughout the workpieces W1 and W2. As the lifting portion 32, for example, an air cylinder or a ball screw can be used.

(Control Unit) The control unit 4 is a device that controls the operation of each unit of the manufacturing apparatus 100 for the display device. For example, the timing, the operation speed, and the operation timing, the operation timing, and the like of the light-emitting timing, the light-emitting intensity of the light source, the vacuum chuck, the reversing mechanism 122, the driving unit 132, the driving unit 231a, the opening and closing mechanism 231, and the lifting unit 32 are performed. The amount is controlled. Moreover, the control unit 4 also controls a coating device, a conveying 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 that operates in accordance with a predetermined program.

Further, the control unit 4 has a storage unit that stores a message necessary for the processing of the present embodiment. Such a message includes a lighting timing or luminous intensity, an operation timing, an operation speed, an operation amount, and the like. Further, the control unit 4 has an input device and an output device. The input device is a device such as a switch, a touch panel, a keyboard, a mouse, and the like for an operator to input a message required for the processing of the present embodiment or a message stored in the storage unit. The output device is a device such as a display, a lamp, or a meter for the operator to confirm the state of the present embodiment.

[Operation] In addition to FIG. 1 to FIG. 5, a manufacturing apparatus 100 having a member for a display device having the above configuration will be described with reference to FIGS. 6(A), 6(B), and 6(C) to 19 Action example. In addition, the position, size, and the like of the respective portions or the workpieces W1 and W2 in the respective drawings are merely simplified expressions for convenience of understanding.

As described above, there are various types of workpieces to be processed in the manufacturing apparatus 100 that is a member for a display device. Here, as shown in FIG. 6(A), FIG. 6(B), and FIG. 6(C), the cover panel S1 which is an example of the workpiece W1 is described as an example of the workpiece W2. The display panel S2 is laminated on each other via the adhesive R to constitute a member for a display device.

The cover panel S1 has various types or shapes. However, in the present embodiment, as shown in FIGS. 6(A) and 6(B), a rectangular cover panel S1 larger than the display panel S2 is used. In other words, the workpieces W1 and W2 to be bonded to the present embodiment have a size in which the outer edge of the workpiece W2 is accommodated in the outer edge of the workpiece W1. A light-shielding printing frame B having a predetermined width is formed on one surface of the cover panel S1 so as to be rimmed on the outer edge. The display area D is formed by a region surrounded by the inner edge of the printing frame B. The display area D is slightly smaller than the outer edge of the display panel S2.

The inner edge of the printing frame B and the outer edge of the display panel S2 are the control width d1 to be accommodated at the edge of the adhesive R. When the edge of the adhesive R developed outwardly at the time of bonding stops inside the control width d1, an unfilled region is generated. When the edge of the adhesive R exceeds the outside of the control width d1, it will become protruded. In the printing frame B, for example, the width d3 on the long side is narrower than the width d2 on the short side. In other words, 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 of the printing frame B having the long width d2, the side surface of the workpiece W1 is located further outside the irradiation range of the irradiation member 21 which is directed toward the inner side in the irradiation direction. Therefore, the light-shielding printing frame B blocks the incident of energy toward the inside of the workpiece W1, and the energy is not incident from the side surface of the workpiece W1 (refer to 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 further inside than the irradiation range of the irradiation member 21 which is directed toward the inner side in the irradiation direction. Therefore, the printed frame B having the light-shielding property partially blocks the incident of energy toward the inside of the workpiece W1, but the energy is incident from the side surface of the workpiece W1 (see FIG. 5).

Further, 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 circular shape, an elliptical shape, or a combination of a curved line and a straight line. 6(A) and 6(B), the printing frame B shown has a predetermined thickness, but actually, the thickness of the printing frame B is sufficiently smaller than that between the cover panel S1 and the display panel S2. The thickness of the agent R follows.

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

In the manufacturing apparatus 100 for members for display devices of the present embodiment, the adhesive R is applied to the cover panel S1 in advance by a coating device (not shown). The coating shape and the coating range are not limited to those specific, and various types are conceivable. For example, as shown in Fig. 7, there is a form in which a shape resembling a fish bone is applied. Specifically, a cross line extending in the longitudinal direction and the short side direction so as to intersect the center of the region corresponding to the display panel S2 is applied. Further, a line extending from both ends of the line transverse to the longitudinal direction toward the four corners is applied.

The display panel S2 and the cover panel S1 to which the adhesive R is applied are transported by a transport device (not shown), and are provided in the first holding portion 12 and the second holding portion 13 by the pick-up 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 portion 12 with the surface of the adhesive R applied thereon, and is sucked and held by the vacuum chuck. The display panel S2 is placed on the mounting surface 131a of the mounting portion 131, and is held by the vacuum chuck.

In addition, since a general apparatus can be used for a coating apparatus, a conveyance apparatus, a pick-up apparatus, etc., illustration and description are abbreviate|omitted. However, the coating device may also employ a device that applies the adhesive R to the cover panel S1 held by the holding member 121.

From this state, the illuminating member 31 of the additional illuminating unit 3 located at the standby position is moved to the irradiation position by the elevation unit 32. Then, the reversing mechanism 122 of the first holding portion 12 rotates the holding member 121, thereby inverting the cover panel S1 held by the holding surface 121a. Then, as shown in FIG. 9, the application surface of the adhesive agent R of the cover panel S1 faces the display panel S2 on the mounting part 131.

The mounting portion 131 performs alignment of the cover panel S1 and the display panel S2 by the driving portion 132. The alignment is performed, for example, by photographing the reference positions of the cover panel S1 and the display panel S2 by an imaging unit (not shown), and the drive unit 132 moves the placement unit 131 in the XYθ direction to eliminate Deviations from the reference positions of each other. The reference position is a mark or a specific position marked on the display panel S2 and the cover panel S1. In addition, general devices and techniques can be used for the imaging unit and the alignment.

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

Thereafter, the entire surrounding irradiation member 21 starts irradiation of UV light from the irradiation head 210, thereby setting it as 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.

Further, the UV light of the long side portion is blocked by the printing frame B and the shutter 230, and is not incident from the side surface of the cover panel S1. For the short side portion, as also shown in Fig. 11, 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 by the printing frame B and is not incident from the side surface of the cover panel S1. Further, as shown in FIG. 12, the UV light is blocked by the flexible wiring board F in the portion where the flexible wiring board F is formed in the short side portion. Therefore, 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.

At the same time as such irradiation, as shown in FIG. 10, the driving unit 132 raises the placing unit 131. Then, the display panel S2 moves toward the cover panel S1 side to contact the adhesive R. In other words, the irradiation from the irradiation head 210 starts together with the start of the operation of the placing unit 131, and waits for the adhesive R to expand. As shown in FIG. 13, the subsequent agent R is pressed and developed toward the outer edge of the cover panel S1. Then, as shown in FIG. 4 and FIG. 11, the edge portion of the enlarged adhesive R reaches the inner edge of the printing frame B and the outer side of the display panel S2 with respect to the long side portion and the short side portion where the flexible wiring board F is not formed. Between the edges, the irradiation of the UV light that continues to be irradiated is received. Therefore, the edge of the adhesive R is temporarily hardened instantaneously before protruding to the outside of the display panel S2. However, if the irradiation is uneven or the development of the adhesive R is uneven, there may be a portion where the hardening or hardening is weak.

Further, in the long side portion, when the edge of the adhesive R reaches the outer side of the inner edge of the printing frame B and the adhesive R is filled in all the regions of the display region D, the switching from the first irradiation state to the second irradiation state is performed. That is, the opening and closing mechanism 231 drives the shutter 230, and as shown in FIG. 14, the edge of the flat plate 230a is moved to a position where the UV light from the irradiation head 210 is allowed to enter from the side surface of the cover panel S1. For example, the control unit 4 sets in advance the timing at which the edge of the adhesive R reaches the outer side of the inner edge of the printing frame B, and the switching is performed at the timing. Then, as shown in FIG. 5, the UV light from the irradiation head 210 is incident from the side surface of the cover panel S1, and is reflected inside the cover panel S1 and travels to the inside. Therefore, the UV light is irradiated over the edge portion of the adhesive R and the region inside. For example, the inside of the cover panel S1 is irradiated to the inside for about 10 mm. Therefore, in the portion where the temporary hardening is insufficient in the first irradiation state, the UV light is also irradiated to the inside by the second irradiation state. Therefore, since the adhesive R under the printing frame B and the entire periphery of the edge of the display panel S2 is temporarily hardened, the unfilled display region D disappears as shown in FIGS. 16 , 17 (A) and 17 (B). . In this manner, the pressing of the placing portion 131 is maintained until the temporary curing.

Further, in a state where the vacuum chuck in the placing portion 131 is maintained, the vacuum chuck in the holding member 121 is stopped. Then, the reversing mechanism 122 rotates the holding member 121, whereby the upper surface of the cover panel S1 is released as shown in FIG. Thereby, the cover panel S1 is released from the pressed state. The irradiation member 31 of the additional irradiation unit 3 located at the irradiation position irradiates the entire cover panel S1 with UV light. Then, since the UV light is irradiated from the display region D to the uncured portion of the short side portion or 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 hardened throughout the entire circumference, thereby preventing protrusion.

When the adhesive R protrudes, as shown in FIGS. 16 , 17 (A) and 17 (B), the adhesive R flows out from the outer edge of the display panel S2, and the edge of the adhesive R exceeds the control width d1. In Fig. 16, the protruding width is indicated by d5. If such protrusion is present, the step of removing the adhesive R after hardening is required, which is not preferable from the viewpoint of production cost. Further, if the adhesive R is not filled in the display region D, the boundary line of the adhesive R remains in the display region D. FIG. 18 shows a state in which the outermost edge enters the control width d1 in the width d4 of the edge portion of the adhesive R, but the inner boundary line enters the display region D. Such boundary lines can be seen from the outside and are therefore not good.

In the present embodiment, as shown in FIG. 19, the unfilled portion remains in the display region D, the protrusion is prevented, and the irradiation without the UV light is insufficient, so that the edge portion of the adhesive R coincides in a state close to a straight line.

In this manner, the display panel S2 and the cover panel S1 are bonded together to constitute a member for a display device. Hereinafter, the member for a display device will be referred to as a laminate. The laminated body is carried out from the mounting portion 131 where the vacuum chuck is stopped, and is again transported by the transport device. Then, the pickup member (not shown) carries the laminated body to the main curing device.

In the main curing device, the energy of the strength required for the adhesive R to be completely hardened is irradiated to perform the main hardening of the adhesive R. Further, the laminated body is carried out from the curing device to the conveying device by the pick-up member, and other processing is performed as needed. The member for the display device to be manufactured is carried out from the manufacturing device 100 for the display device by an unloader.

[Test Results] The test results obtained by measuring the amount of protrusion and the hardening range of the adhesive in the bonding of the present embodiment and the comparative example described above will be described.

(1) Protruding amount The test results of the protruding amount of the adhesive after lamination were as follows. Comparative Example A and Comparative Example B are examples in which irradiation of UV light is only the first irradiation state, and Example A and Example B are examples in which the first irradiation state is the second irradiation state as described above.

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

(2) Hardening range The test results based on the different hardening ranges of the UV light irradiation angle are as follows. Comparative Example C, Example C, and Example D are examples in which the inclination angle of the irradiation axis X of the UV light is irradiated with respect to the direction orthogonal to the plane of the cover panel S1 as shown in FIG. 22 . The tilt angle was 90° in Comparative Example C, 75° in Example C, and 40° in Example D. The side surface of the cover panel S1 is covered by a tape T. Therefore, the UV light is not incident from the side surface of the cover panel S1. However, in Comparative Example C, UV light was incident from the edge of the adhesive R toward the inside. In the examples C and D, as in the above-described embodiment, the UV light is irradiated only to the edge of the adhesive R. Further, the irradiation time is set to three of 10 [sec], 30 [sec], and 60 [sec].

The test results are shown in Fig. 23. In Fig. 23, the vertical axis represents a hardening range [mm] indicating a 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 an irradiation angle [°] indicating the irradiation angle. . As is clear from Fig. 23, in Comparative Example C, the hardening range was 0.5 mm and 1 mm, and it hardened on the inner side in a wide range. Therefore, when the UV light is irradiated from the edge of the adhesive R toward the inner side in the early stage of the expansion of the adhesive R, the adhesive R may be hardened before being filled into the display region D. On the other hand, in Example C and Example D, the hardening range was 0.1 mm, and the hardening range was very narrow. Therefore, the edge of the adhesive R can be accommodated in the control width d1.

[Operation and Effect] (1) The manufacturing apparatus 100 for a display device member of the present embodiment includes the bonding unit 1 and the cover panel S1 and the display panel S2 are bonded together via an adhesive R that is cured by irradiation of energy. The cover panel S1 and the display panel S2 are a pair of cover panels S1 and S2 constituting a display device, and one of them has a print frame B that divides the display area D; and the illumination unit 2 is switched from the first illumination state to In the second irradiation state, the first irradiation state is an adhesive R that reaches the display region D outside the bonded cover panel S1 and the display panel S2, and the energy is irradiated only to the adhesive edge. The region of the portion irradiates energy, and the second incident state is a state in which energy is incident on a region on the side surface of the cover panel S1.

Therefore, in the case of the first irradiation state, when the adhesive R between the bonded cover panel S1 and the display panel S2 reaches the outside of the display region D, only the edge of the adhesive R is irradiated with energy so that Temporarily hardened. Further, by switching to the second irradiation state, energy is also transmitted from the edge of the adhesive R and irradiated to the inner side. Therefore, the portion which is not hardened in the first irradiation state is also temporarily hardened. As described above, since the adhesive R is sufficiently enlarged and the inside of the cover panel S1 is irradiated with energy, it is possible to prevent the adhesive R from being unfilled in the display region D and to prevent the adhesion of the adhesive R. Therefore, the quality of the product becomes good, the yield is improved, and the step of removing the protruding adhesive R is not required, so that the production cost can be reduced. Further, in the first irradiation state, if the adhesive R does not sufficiently reach the region where the energy is irradiated or does not reach the temporary hardening to prevent the protrusion, the adhesive R may be temporarily hardened after the irradiation is completed. The parts flow. However, in the second irradiation state, energy is applied to the inside of the cover panel S1, so that temporary hardening can be promoted to prevent the protrusion R from protruding.

(2) The illuminating unit 2 includes the illuminating member 21, the direction of the energy to be irradiated is inclined toward 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 switching unit is in the first irradiation state. The energy irradiation region of the irradiation member 21 is switched between the second irradiation state and the second irradiation state.

Therefore, if the irradiation member 21 is disposed obliquely, the first irradiation state can be set, and the switching portion can be used as the second irradiation state.

(3) The switching portion includes a shielding portion 23 that is close to the side surface of the cover panel S1 to block the energy from the irradiation member 21, thereby being set to the first irradiation state, and passing away from the side surface of the cover panel S1 so as to come from The energy of the irradiation member 21 is incident from the side surface of the cover panel S1, and is set to the second irradiation state.

Therefore, the energy from the irradiation member 21 can be switched from the first irradiation state to the second irradiation state by the shielding portion 23. Therefore, it is not necessary to separately prepare the irradiation members 21 that irradiate energy from different angles, and thus it is possible to save cost and space required.

(4) The shielding portion 23 includes a shutter 230 that moves between a closed position close to the side surface of the cover panel S1 and an open position away from the side surface of the cover panel S1, and an opening and closing mechanism 231 that drives the shutter 230.

Therefore, the switching from the first irradiation state to the second irradiation state can be performed at a high speed by the opening and closing of the shutter 230. Therefore, even when the control width d1 is narrow, it is possible to appropriately correspond to the expansion speed of the adhesive R. Temporary hardening treatment is carried out.

(5) The shielding portion 23 is disposed only at a position corresponding to the side surface of the cover panel S1 into which the energy from the irradiation member 21 is incident.

Therefore, in the portion of the side surface of the cover panel S1 where the energy from the irradiation member 21 does not enter, and the portion where the energy from the irradiation member 21 is blocked by the flexible wiring board F, it is not necessary to provide the shielding portion 23 Can save costs and space.

(6) The present invention includes an additional irradiation unit 3 that irradiates energy to the entire adhesive between the pair of cover panels S1 and S2 in the first irradiation state.

Therefore, the portion of the side surface of the cover panel S1 where the energy from the irradiation member 21 does not enter, and the portion where the energy from the irradiation member 21 is blocked by the flexible wiring board F are added to the irradiation portion 3 It is hardened to prevent protrusion.

[Another embodiment] The present embodiment is not limited to the above embodiment. (1) In the above embodiment, the member that irradiates energy uses only the irradiation member 21 in a direction inclined with respect to a direction parallel to the plane of the workpiece W1. However, as shown in FIGS. 24 and 25, the shielding portion 23 and the second illuminating member 230c may be provided as the switching portion. In other words, the shielding portion 23 is provided, and the shielding portion 23 is set to the first irradiation state by blocking the energy from the irradiation member 21. In addition, the second irradiation member 230c is provided, and the second irradiation member 230c is placed in a region in which the energy is incident on the inner side of the edge portion of the adhesive R to be in the second irradiation state. The second irradiation member 230c irradiates energy to the edge of the adhesive R in a direction parallel to the plane of the workpiece W1, for example.

In the above-described embodiment, as shown in FIG. 24, the first irradiation state is set, that is, the shielding portion 23 blocks the incident of energy toward the side surface of the workpiece W1, and the edge portion of the adhesive R is irradiated with energy until the adhesive R is applied. The edge reaches the outside of the display area. Further, as shown in FIG. 25, when the edge of the adhesive R reaches the outside of the display region, the second irradiation member 230c irradiates energy, thereby setting the second irradiation state. Thereby, it is possible to prevent the protrusion in the display region D from being unfilled and unhardened. Further, in the switching from the first irradiation state to the second irradiation state, the irradiation of the irradiation member 21 may be stopped or may be continued.

(2) In the above-described embodiment, since the workpiece W2 is shielded from the optical film of the polarizing plate P by the UV light, the influence of the UV light irradiation is small, and in the first irradiation state, only the edge of the adhesive R can be applied. Irradiation of UV light. However, when UV light is irradiated onto the display panel S2, if the UV optical film is not 100% blocked, the attenuated UV light still has a certain degree of influence. For example, it is considered that in the case where the processing time of the process is long and the UV irradiation is performed for a long time, even if the amount of UV light is attenuated by the optical film, the condition that the accumulated light amount affects the flow is still Established. However, it is very difficult to manage the irradiation range of the irradiation head 210 in such a manner that the irradiation of the display panel S2 is not performed.

In order to cope with this situation, in addition to blocking the energy of one of the pair of workpieces, there is also a second shutter that blocks the energy to the other workpiece. Further, the opening and closing mechanism may be configured to move the second shutter between a closed position close to the other workpiece and a closed position away from the other workpiece to open the position where the energy is incident.

More specifically, as shown in FIG. 26, a shutter 230A that shields the end surface of the cover W1, that is, the workpiece W1, and a second shutter 230B that shields the end surface of the workpiece W2, that is, the display panel S2, are provided. Similarly to the shutter 230, the shutter 230A is closed by the opening and closing mechanism 231 (see FIGS. 1, 2, 9, etc.) in a closed position close to the end surface of the cover panel S1 and away from the end surface of the cover panel S1. Move between the open positions in the horizontal direction. The second shutter 230B is moved in the vertical direction between the closed position close to the end surface of the display panel S2 and the open position away from the end surface of the display panel S2 by the opening and closing mechanism 231B. The opening and closing mechanism 231B may include, for example, a linear guide, a cylinder, or the like.

In this embodiment, as shown in FIG. 26, before the bonding, the shutter 230A and the second shutter 230B are set to the closed position to start the irradiation of the UV light from the irradiation head 210. At the same time as the above-described irradiation, the display panel S2 is moved toward the cover panel S1 side as in the above-described embodiment to start the bonding via the adhesive R. 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 has been enlarged by the bonding reaches the inner edge of the printing frame B and the outer edge of the display panel S2, and receives irradiation of the UV light that continues to be irradiated. Therefore, the edge of the adhesive R is temporarily hardened instantaneously before protruding to the outside of the display panel S2. At this time, the entrance of the UV light passing through the cover panel S1 is prevented by the shutter 230A and the second shutter 230B. Moreover, the irradiation of the UV light toward the end surface of the display panel S2 is also prevented.

Further, as shown in FIG. 27, when the edge of the adhesive R reaches the outer side of the inner edge of the printing frame B and the adhesive R fills all the areas of the display area D (refer to FIG. 4), the opening and closing mechanism 231, 231B drives the shutter. 230A, 230B are moved to the open position. For the switching, for example, the timing at which the edge portion of the adhesive R reaches the outer side of the inner edge of the printing frame B is set in advance to the control unit 4, and the timing is performed. Then, the UV light from the irradiation head 210 is incident from the side surface of the cover panel S1, and is reflected inside the cover panel S1 to travel to the inside. Therefore, the UV light is irradiated over the edge portion of the adhesive R and the inner side region to be temporarily hardened. The UV light that is irradiated to the side of the display panel S2 also contributes to the temporary hardening of the adhesive R.

Thereby, the same operational effects as those of the above-described embodiment can be obtained, and not only one of the workpieces W1 but also the incident of energy from the other workpiece W2 can be performed at an appropriate timing. That is, it is possible to shield the irradiation of the UV light toward the side surface of the display panel S2 to suppress the influence on the flow until the adhesive R reaches the outside, and after the outer side is reached, the side surface of the display panel S2 is irradiated with UV light to promote the adhesive R. Temporary hardening.

Since the opening and closing operations of the shutter 230A and the second shutter 230B can be operated regardless of the positions of the holding member 121 and the placing portion 131, the holding member 121 and the placing portion 131 can be retracted, and the bonding operation can be seamless. (seamless) transitions to a process that prevents changes over time, preventing the occurrence of time lag.

Further, in order to prevent accidental reflection or scattering by the irradiation light, the shutter 230, the shutter 230A, and the second shutter 230B in the respective embodiments are preferably subjected to a process for preventing reflection or using UV. Cut off raw materials, etc. As a process for preventing reflection, for example, blackening or the like by a RAYDENT process or the like is used. Further, it is preferable that the shape of the shutter 230A and the second shutter 230B is an inclined surface shape, a wedge shape, a taper shape or the like in which the front end portion is inclined, thereby making it possible to prevent the irradiated UV light from being blocked at the open position. shape. For example, a surface that is inclined with respect to the vertical direction or a surface that is inclined with respect to the horizontal direction may be considered.

Moreover, it is preferable that the shutter 230, the shutter 230A, and the second shutter 230B can shield or 100% absorb light. In the actual processing, the thickness, shape and the like of the members of the stopper 230, the stopper 230A, and the second stopper 230B should be designed to avoid local leakage due to the skew or deformation of the part itself during installation adjustment and the like. .

Further, there is a possibility that local light leakage may occur due to the adjustment operation of the surface of the mounting portion 131 and the surfaces of the workpieces W1 and W2 which are not horizontal or parallel. Therefore, it is preferable to eliminate the adjustment of the long hole by using a configuration such as a pin or the like to facilitate attachment to a fixed position, thereby eliminating an error caused by an operator. In addition, when the operator has to change the positions of the shutter 230 and the second shutter 230B frequently due to the change of the type of the product, it is preferable to prepare an accessory tool that takes into consideration the workability, for example, to adjust the maintenance state by standardizing the fixture. Wait.

Further, when the energy irradiation to the workpiece W2 is not good, the second shutter 230B may be fixed to the closed position. For example, elements used in a polarizing plate of a liquid crystal display (LCD) module are weak against UV light. At this time, the second shutter 230B may be always set to a closed position or may be constituted by a light shielding plate that does not move.

Further, in the above aspect, the irradiation direction of the irradiation head 210 may not be variable. When the angle of the irradiation head 210 is made variable, the wiring head 210 for UV light requires wiring such as a power cable. Therefore, in order to perform the winding, a wide movable space is required in the periphery. However, by fixing the irradiation head 210 and providing the above-described shutter, it is possible to be compact as a whole.

(3) The irradiation head 210 may be configured to be angularly adjustable as in the above-described embodiment, and has a conversion portion that converts the direction of the energy irradiated by the irradiation head 210. More specifically, as shown in FIG. 28, a support portion 22A that can support the irradiation head 210 that irradiates UV light with an angle adjustment is provided. Further, a conversion unit 240 that sets the irradiation position of the UV light from the irradiation head 210 to a desired portion is provided.

The conversion unit 240 has a light guiding member 241 and an optical member 242. The light guiding member 241 is a tubular member in which a substantially L-shaped spatial light path through which UV light passes is formed. Such a light guiding member 241 is provided corresponding to the length of the side of the display panel S2, that is, substantially the same length as the horizontal direction. One end of the optical path of the light guiding member 241 is an incident port into which the UV light emitted from the irradiation head 210 is incident. The other end of the optical path of the light guiding member 241 is an exit port that emits UV light to the edge of the adhesive R on the outer edge of the display panel S2. The light guiding member 241 of the present 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 opening side is parallel to the vertical direction. The optical member 242 is a mirror or a prism that is disposed at a corner of the optical path and converts the direction of the incident UV light into an orthogonal emission direction. Further, the light guiding member 241 is disposed such that the light emitted from the exit port is irradiated to the outer edge of the display panel S2 from directly below or substantially directly below.

The irradiation head 210 is configured to be able to face the horizontal direction of the entrance port of the light guiding member 241, the inner edge of the printing frame B, and the outer edge of the display panel S2 in the irradiation direction of the UV light by a driving mechanism (not shown). Rotate between the oblique directions. Further, in order to prevent accidental light leakage, reflection, and scattering, it is preferable that the shape of the entrance port of the light guiding member 241 is configured to be in close contact with the irradiation head 210 or to block light leakage. On the other hand, it is preferable that the exit port has a configuration in which the irradiation range is defined by the size of a portion to be irradiated with UV light. For example, the exit port is formed in a slit shape, and is configured to irradiate light only to a necessary portion. Further, in the irradiation direction from the exit port, it is necessary to set the condition that light is totally reflected on the glass end surface so as not to cause light guiding of the glass, and in this example, it is perpendicular to the workpieces W1 and W2.

In the present embodiment, as shown in FIG. 28, before the bonding, the irradiation head 210 is irradiated with UV light from the irradiation head 210 in a horizontal direction in which the irradiation direction of the UV light is directed toward the entrance of the light guiding member 241. The UV light incident from the entrance port in the horizontal direction is redirected by the optical member 242 while passing through the optical path of the light guiding member 241, and is emitted from the exit opening toward the vertical direction toward the outer edge of the display panel S2.

At the same time as the irradiation, as described above, the display panel S2 is moved toward the cover panel S1 side, and bonding via the adhesive R is started. When the edge of the enlarged adhesive R reaches between the inner edge of the printing frame B and the outer edge of the display panel S2, the irradiation of the continuously irradiated UV light is received. Therefore, the edge of the adhesive R is temporarily hardened instantaneously on the outer edge of the display panel S2.

Then, as shown in FIG. 29, when the edge of the adhesive R reaches the outer side of the inner edge of the printing frame B and the adhesive R is filled in all the areas of the display area D (refer to FIG. 4), the driving mechanism rotates the irradiation head 210. The direction in which the UV light is directed toward the inner edge of the printing frame B and the outer edge of the display panel S2 is set. For the switching, for example, the timing at which the edge portion of the adhesive R reaches the outer side of the inner edge of the printing frame B is set in advance to the control unit 4, and the timing is performed. Then, the UV light from the irradiation head 210 is incident from the side surface of the cover panel S1, and is reflected inside the cover panel S1 to travel to the inside. Therefore, the UV light is irradiated over the edge of the adhesive R and the inner side of the adhesive R to be temporarily hardened.

Thereby, the same effects as those of the above-described embodiment can be obtained, and the temporary hardening of the edge portion of the adhesive R and the temporary hardening of the inside can be performed at an appropriate timing. In other words, it is possible to irradiate only the edge of the adhesive R with UV light to maintain the flow until the adhesive R reaches the outside, and to allow the UV light to enter from the oblique direction after reaching the outside to promote temporary hardening of the adhesive R. Moreover, even in the case where the adhesive R is swelled from the end of the display panel S2, UV light can be irradiated to prevent further protrusion.

Further, it is easier to set the irradiation area of the light to an appropriate area depending on the product than the shutter or the like. Further, it is not necessary to perform an operation such as alignment of a brake or the like, and a stable result can be obtained regardless of the operator's adjustment skill.

Further, as described above, when the energy irradiation to the workpiece W2 is not good, it is preferable to provide a configuration in which the end portion of the workpiece W2 is shielded from light on the mounting portion 131 side. For example, it is conceivable that a part of the mounting portion 131 or the conversion portion 240 is a shape that covers the end portion of the workpiece W2, but it is necessary to adopt a configuration that does not hinder the irradiation of the adhesive R.

As described above, each of the embodiments described above satisfies the opposite requirement that the energy incident toward the adhesive R is prevented during the bonding process, and the energy is incident after the end of the bonding. Adjustment by the irradiation direction of the irradiation unit 2 is not possible. In each of the above-described embodiments, the protrusion light is promoted by the capillary phenomenon or the like after the bonding, and the UV light is incident from the end faces of the workpieces W1 and W2 during the bonding process or after the bonding. Thereby, a strip-shaped temporary hardening region of the same width can be obtained over the entire circumference of the workpieces W1, W2. Further, the temporary shape of the irradiation by the additional irradiation unit 3 can preserve the bonding shape.

(4) By applying a material that transmits energy to the holding member 121 or the holding surface 121a, it is possible to irradiate the additional irradiation unit 3 while applying pressure to the workpieces W1 and W2. Thereby, it is possible to irradiate at a high speed to prevent the protrusion.

(5) The shielding portion 23 may be provided in a portion where the energy from the irradiation member 21 is incident from the side surface of the workpiece W1. Therefore, both the long side and the short side can be used. The flexible wiring board F may be extended from the long side portion or may protrude from the short side portion, and is applicable in any form.

(6) The optimum angle of the irradiation axis of the irradiation member 21 differs depending on the width of the printing frame B, the control width, the position of the irradiation member 21, and the like. When 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 to enter the energy from the side surface. Therefore, the angle of inclination with respect to the horizontal direction can be relatively small as long as it does not enter the inner side from the edge of the adhesive R. When the width of the printing frame B is small and the distance from the outer edge of the workpiece W2 to the outer edge of the workpiece W1 is short, it is necessary to increase the inclination angle with respect to the horizontal. For example, for the long side portion of a smartphone, since the distance is short, it is necessary to increase the tilt angle. The inclination angle can also be reduced in the case where the control width is long, and in the case where the control width is short, there is a tendency that the inclination angle should be increased. These optimum inclination angles are originally different depending on the position of the irradiation member 21 such as the distance of the irradiation member 21 with respect to the workpiece W1. In this way, the optimum angle is set according to various conditions.

(7) When the opening/closing mechanism 231 of the shutter 230 of the shielding portion 23 is slightly moved, for example, the driving portion 231a is not limited to the cylinder. An electromagnetic solenoid or the like can also be applied.

(8) As described above, the irradiation unit 2 that uses UV light is used as the apparatus for performing the curing treatment including the temporary curing, and the UV-curable resin is used as the adhesive R, but the invention is not limited thereto. For example, an electromagnetic wave such as irradiation heat or infrared rays, an energy including radiation such as a particle beam, and the like may be used.

(9) A pair of workpieces that are bonded to each other may be one piece or a plurality of pieces. In other words, the number of stacked workpieces stacked as members for the display device is not limited to a specific number. The size of a pair of workpieces may be different as described above or may be the same size. That is, the present invention can temporarily harden the workpiece W1 or W2 before it protrudes from the edge of the workpiece W1 or W2 regardless of the size of the workpieces W1, W2. As a member for a display device to be manufactured according to the present invention, it is considered to be used for a smart phone, a tablet terminal, a display for a personal computer (PC), a television, an in-vehicle, or an airplane. The display panel of another device is used for various display device members. Among these, it is particularly effective when it is applied to a member for a display device for a smart phone or a tablet terminal whose control width tends to be shortened.

(10) The specific values applicable to the size, time, and the like of the embodiment are not limited to specific numerical values. For example, the expansion speed of the adhesive R differs depending on the pressure to be bonded, the amount of the adhesive R, the viscosity, the temperature, the coating form, and the like. Therefore, the timing at which the driving of the shutter 230 is started or the irradiation of the second illuminating member 230c is started is not limited to the above-described example. The timing of starting the energy irradiation of the irradiation unit 2 is not limited to the above-described form, and may be started at any timing before 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 start with the start of the operation of the placing unit 131. It suffices to start at a certain timing from the start of the upward movement of the mounting portion 131 to the time when the adhesive R that has been squeezed and developed between the workpieces W1 and W2 reaches the edge of the workpiece W2.

(11) The irradiation position of the additional irradiation unit 3 is not limited to the entire irradiation, and may be partial irradiation. For example, according to the second irradiation state, it is difficult to enter the energy from the side surface of the workpiece W1, and the irradiation portion 3 may be added to irradiate only the portion where the adhesive R is hard to be temporarily cured. In this case, the additional irradiation unit 3 may be a point irradiator having a narrow irradiation range, or a permeation hole or a holding member 121 or a holding surface 121a of the transmission member that uses energy only in the irradiation portion.

(12) The control unit 4 presets that the edge of the adhesive R reaches the outer side of the inner edge of the printing frame B and the adhesive R fills the display area with respect to the switching of the shielding portion 23 or the control of the irradiation timing of the second irradiation member 230c. The time of all areas of D can be switched or illuminated at the timing. However, it is not limited to such time control. For example, a detecting device such as a camera or a sensor may be provided for detecting that all of the region where the adhesive R is filled to the display region D or the adhesive R reaches the outer edge of the workpiece W2. Further, when the detection device detects these, the switching of the shielding portion 23 or the irradiation of the second irradiation member 230c is performed.

(13) The form of the irradiation member 21 is not limited to the above-described form. For example, a plurality of cylindrical heads 210 that are inclined in the direction of the direction of the adhesive R may be arranged along the circumference of the workpiece W2 or the like. Similarly, a plurality of light sources such as LEDs may be arranged in an array. When a plurality of cylindrical heads such as the heads 210 or LEDs are arranged in this manner, unevenness in the intensity of irradiation of energy may occur in the direction in which the light sources are arranged. In this case, in the adhesive R that reaches the edge of the workpiece W2, in the portion where the irradiation intensity of the energy is weak, the temporary hardening of the adhesive R may not be sufficiently obtained, and the fluidity remains. In the present invention, even in this case, by switching to the second irradiation state, the energy is diffused and transmitted while being reflected in the workpiece W1, and is irradiated to the inner side away from the edge portion of the workpiece W2. Therefore, in the first irradiation state. The portion that has not been sufficiently hardened temporarily is also temporarily hardened.

(14) In the above embodiment, the illuminating member 21 is provided on the base 11. That is, the irradiation head 210 can be fixed to the base 11 with an angle adjustment. However, the irradiation member 21 may be provided in the second holding portion 13. For example, the irradiation head 210 can be fixed to the placing portion 131 with an angle adjustment. If so, the positional relationship between the workpiece W2 and the irradiation head 210 does not change at the time of positioning of the workpiece W2. Therefore, the irradiation position toward the edge portion of the adhesive R becomes fixed, and the unevenness of the amount of protrusion is further lowered.

(15) The energy irradiated by the irradiation unit 2 has a certain spread in the cross section. The direction of the energy is substantially determined by the line connecting the center of the section, that is, the axial direction or the direction parallel thereto. However, when the irradiation of energy is radial or the like, the direction of the energy to be irradiated may not strictly coincide with the axial direction depending on the position of the cross section.

(16) In the above aspect, the device is configured such that the plane of the workpiece W2 is horizontal. For example, the mounting surface 131a of the mounting portion 131 is in the horizontal direction. However, the direction of the workpiece W2 and the direction of the mounting surface 131a may not necessarily be horizontal.

1‧‧‧Fitting Department
2‧‧‧ Department of Irradiation
3‧‧‧Additional Irradiation Department
4‧‧‧Control Department
11‧‧‧Abutment
12‧‧‧1st Maintenance Department
13‧‧‧2nd Maintenance Department
21‧‧‧ illumination components
22, 22A‧‧‧ Support Department
23‧‧‧Shading Department
31‧‧‧ illumination components
32‧‧‧ Lifting Department
100‧‧‧Manufacturing device for display device
121‧‧‧Retaining components
121a‧‧‧ Keep face
121b, 131b‧‧‧Adsorption holes
122‧‧‧Reversal mechanism
122a‧‧‧Rotation
122b‧‧‧Support
131‧‧‧Loading Department
131a‧‧‧Loading surface
132‧‧‧ Drive Department
210‧‧‧ illuminated head
211‧‧‧ fiber optic
220‧‧‧ Framed Department
221‧‧‧ Sidewall
221a‧‧‧ Guide hole
221b‧‧‧ bolt
230, 230A‧‧ ‧ blocking
230a‧‧‧ tablet
230b‧‧‧Strengthen board
230c‧‧‧2nd illumination member
230B‧‧‧2nd gate
231, 231B‧‧‧ opening and closing institutions
231a‧‧‧Driving Department
231b‧‧‧Guidance
231c‧‧‧support plate
240‧‧‧Transition Department
241‧‧‧Light guiding members
242‧‧‧Optical components
B‧‧‧Printing frame
D‧‧‧ display area
D1‧‧‧Control width
D2‧‧‧ Short side width
D3‧‧‧width on the long side
D4‧‧‧Width
D5‧‧‧ protruding width
F‧‧‧Flexible wiring board
P‧‧‧ polarizer
R‧‧‧Binder
S1‧‧ hood cover
S2‧‧‧ display panel
T‧‧‧shade belt
W1, W2‧‧‧ workpiece
X‧‧‧ illumination axis
UV‧‧‧UV light

FIG. 1 is a perspective view of a manufacturing apparatus of a member for a display device according to an embodiment. Fig. 2 is a partial cross-sectional view showing the apparatus for manufacturing the member for a display device of Fig. 1; 3 is a partial perspective view showing a state in which a display panel is placed in the manufacturing apparatus of the member for a display device of FIG. 1 . 4 is a cross-sectional view showing a first irradiation state. Fig. 5 is a cross-sectional view showing a second irradiation state. Fig. 6(A) is a plan view showing a cover panel according to an embodiment, Fig. 6(C) is a plan view showing the display panel, and Fig. 6(B) is a cross-sectional view showing both of them. Fig. 7 is an explanatory view showing a form of application of an adhesive on a cover panel. 8 is an explanatory view showing a state in which a cover panel and a display panel are provided in a bonding portion. FIG. 9 is an explanatory view showing a state in which the cover panel faces the display panel. FIG. 10 is an explanatory view showing the first irradiation state and the start of bonding. Fig. 11 is a cross-sectional view showing a first irradiation state of a short side portion. Fig. 12 is a cross-sectional view showing a first irradiation state of a flexible wiring board portion. Fig. 13 is an explanatory view showing a crimping process of the display panel. FIG. 14 is an explanatory view showing a second irradiation state. FIG. 15 is an explanatory view showing irradiation of an additional irradiation unit. Fig. 16 is a cross-sectional view showing a protruding form of an adhesive. Fig. 17(A) is a bottom view showing the protruding and unfilled portions of the adhesive, and Fig. 17(B) is a plan view showing the protruding and unfilled portions of the adhesive. Fig. 18 is a cross-sectional view showing an unfilled form of an adhesive. 19 is a cross-sectional view showing the form of an adhesive in the embodiment. 20(A) is a bottom view showing a form of an adhesive in the embodiment, and FIG. 20(B) is a plan view showing a form of an adhesive in the embodiment. Fig. 21 is a graph showing the measurement results of the amount of protrusion. Fig. 22 is a cross-sectional view showing a form in which irradiation angles are different. Fig. 23 is a graph showing the measurement results of the hardening range when the irradiation angle is changed. Fig. 24 is a cross-sectional view showing a first irradiation state of another embodiment. Fig. 25 is a cross-sectional view showing a second irradiation state of another embodiment. Fig. 26 is a cross-sectional view showing a first irradiation state of still another embodiment. Fig. 27 is a cross-sectional view showing a second irradiation state of still another embodiment. Fig. 28 is a cross-sectional view showing a first irradiation state of still another embodiment. Fig. 29 is a cross-sectional view showing a second irradiation state of still another embodiment.

1‧‧‧Fitting Department

2‧‧‧ Department of Irradiation

11‧‧‧Abutment

12‧‧‧1st Maintenance Department

13‧‧‧2nd Maintenance Department

21‧‧‧ illumination components

22‧‧‧Support

23‧‧‧Shading Department

100‧‧‧Manufacturing device for display device

121‧‧‧Retaining components

121a‧‧‧ Keep face

121b, 131b‧‧‧Adsorption holes

122‧‧‧Reversal mechanism

122a‧‧‧Rotation

122b‧‧‧Support

131‧‧‧Loading Department

131a‧‧‧Loading surface

132‧‧‧ Drive Department

210‧‧‧ illuminated head

211‧‧‧ fiber optic

220‧‧‧ Framed Department

221‧‧‧ Sidewall

221a‧‧‧ Guide hole

221b‧‧‧ bolt

230‧‧‧1.

230a‧‧‧ tablet

230b‧‧‧Strengthen board

231‧‧‧Opening and closing institutions

231a‧‧‧Driving Department

231c‧‧‧support plate

S1‧‧ hood cover

S2‧‧‧ display panel

W1, W2‧‧‧ workpiece

Claims (10)

A manufacturing apparatus for a member for a display device, comprising: a bonding portion that bonds a workpiece by an adhesive hardened by irradiation of energy, the workpiece being a pair of workpieces constituting the display device, and one of the workpieces The apparatus includes a frame that divides the display area, and an irradiation unit that switches energy from the first irradiation state to the second irradiation state, wherein the first irradiation state is an adhesive for reaching the display region between the bonded workpieces. The state in which the energy is irradiated only to the region of the edge portion of the adhesive is irradiated with energy, and the second irradiation state is a state in which energy is incident on the region further inside the edge portion of the adhesive. The apparatus for manufacturing a member for a display device according to claim 1, wherein the illuminating portion includes: an illuminating member, the direction of the irradiated energy is directed to one of the workpieces in a direction parallel to a plane of the workpiece The bonding surface side is inclined; and the switching unit switches the energy irradiation region of the irradiation member between the first irradiation state and the second irradiation state. The apparatus for manufacturing a member for a display device according to claim 2, wherein the switching portion includes a shielding portion that blocks energy from the illuminating member by approaching a side surface of the workpiece, thereby providing In the first irradiation state, the energy from the irradiation member is incident from the side surface of the workpiece by being away from the side surface of the workpiece, and is set to the second irradiation state. The manufacturing apparatus for a member for a display device according to claim 3, wherein the shielding portion includes: a shutter between a closed position near a side of the workpiece and an open position away from a side of the workpiece Moving; and opening and closing mechanism to drive the shutter. The apparatus for manufacturing a member for a display device according to claim 3, wherein the shielding portion is disposed only at a position corresponding to a side surface of the workpiece into which energy from the irradiation member is incident. . The apparatus for manufacturing a member for a display device according to claim 2, wherein the switching portion includes: a shielding portion that is set to be in the first irradiation state by blocking energy from the irradiation member; The irradiation member is placed in the second irradiation state by irradiating the energy to the inner side of the edge of the adhesive. The apparatus for manufacturing a member for a display device according to any one of claims 1 to 4, further comprising: an additional illuminating unit that illuminates the entire pair of the workpieces in the first irradiation state energy. The apparatus for manufacturing a member for a display device according to claim 4, wherein the shutter is provided corresponding to one of the pair of workpieces, and the manufacturing apparatus for the member for a display device includes a second shutter that blocks energy from the illuminating member to another workpiece, and the manufacturing device for the display device includes an opening and closing mechanism that causes the second shutter to be A closed position close to the end surface of the other workpiece and blocking energy is moved between an open position away from the end surface of the other workpiece and an energy incident. The apparatus for manufacturing a member for a display device according to claim 1, wherein the illuminating portion includes an illuminating head that is angularly adjustable, and the manufacturing device for the member for the display device includes the illuminating unit A conversion unit that converts the direction of energy. A method of manufacturing a member for a display device, comprising: a bonding step of bonding a workpiece to a pair of workpieces constituting a display device, and one of which is formed by an adhesive hardened by irradiation of energy The device has a frame for dividing the display area, and an irradiation step of switching energy from the first irradiation state to the second irradiation state, wherein the first irradiation state is an adhesive for reaching the display region between the bonded workpieces. The energy is irradiated to the region where the energy is irradiated only to the region of the edge of the adhesive, and the second irradiation state is to irradiate energy to a region in which the energy is incident on the inner side of the edge of the adhesive.