KR20150110379A - Apparatus and method for manufacturing a display device member - Google Patents

Abstract

The present invention prevents a gap generated between an adhesive layer and a work. The manufacturing apparatus (100) of a member for a display device is a manufacturing apparatus (100) of a member for a display device joined by interposing a pair of works (R) comprising a liquid crystal panel (S1) and a cover panel (S2) constituting a display device, the manufacturing device including: an adhesive coating apparatus (1) for forming an adhesive layer (R1) by coating an adhesive on the liquid crystal panel (S1); an adhesive layer guide part forming apparatus (6) for forming an adhesive guide part on the liquid crystal panel (S1); and a joining apparatus (2) for joining the pair of works by making the adhesive layer (R1) formed on the liquid crystal panel (S1) contact with the cover panel (S2) wherein the adhesive guide part (RG) guides with respect to the joining apparatus (2) at least a portion of an edge of the adhesive layer (R1) to a contact position (C) in contact with the cover panel (S2).

Description

TECHNICAL FIELD [0001] The present invention relates to a manufacturing apparatus for a member for a display device and a manufacturing method for a member for a display device,

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

2. Description of the Related Art In general, a flat display device (flat panel display) typified by a liquid crystal display or an organic EL display includes a display panel, a protective panel (cover panel) Or a light guide plate thereof is inserted into the case of the flat panel display.

A work such as a display panel, a touch panel, a cover panel, a backlight or a light guide plate (hereinafter simply referred to as a work) is laminated and inserted into a case of a flat panel display. Each work is inserted individually or in a pre-laminated state. For example, a composite panel formed by laminating a touch panel on a protective cover may be used.

Further, the display panel may be one in which the function of the touch panel is inserted. As described above, there are various types of work, but a plurality of work pieces constituting the display device are hereinafter referred to as a display device member.

If a gap is formed between the respective workpieces to be laminated as the display device member, the visibility of the display surface of the display is deteriorated due to reflection of external light. In order to cope with this, it has been practiced to fill the gaps between the works by laminating the works with the adhesive layer interposed therebetween. There are various methods for forming the adhesive layer, but for example, there is a method of forming the adhesive layer by applying an adhesive to either one of the workpieces or both workpieces.

For example, a rectangular liquid crystal panel S1 as shown in Figs. 19 (A) and 19 (B) is used as a cover panel S2 (Fig. 19 ) To form a display device member, the adhesive is applied to the liquid crystal panel S1 side as an example. For application, a slit-shaped nozzle is used as an example. A rectangular adhesive layer R1 is formed by applying an adhesive to the entire application surface of the work by moving the nozzle and the work relative to each other while applying the adhesive of the UV cured resin to the application surface of the work from the slit type nozzle.

In general, the display area of the liquid crystal panel S1 and the inner frame F surrounded by the printing frame P of the cover panel S2 are approximately the same size in a similar shape. The application of the adhesive to the entire surface of the liquid crystal panel S1 means that the adhesive layer R1 formed on the liquid crystal panel S1 is divided into the inner frame F surrounded by the printing frame P of the cover panel S2, And approximately the same size. That is, when the inner frame F is rectangular, the adhesive layer R1 is also formed to have a rectangular shape of substantially the same size. The outer edge of the adhesive layer R1 overlaps the frame line of the inner frame F of the cover panel S2 so that the line of the adhesive layer R1 is not visible and the appearance of the product is good Loses.

Patent Document 1: Japanese Unexamined Patent Application Publication No. 7-73533

However, the adhesive discharged from the nozzle becomes hemispherical due to the surface tension after being applied to the work. Therefore, even if the adhesive is applied in a rectangular shape with the slit-shaped nozzle, the edge portion of the adhesive layer R1 does not become a right angle as viewed from the end face, and as shown in Figs. 19A and 19B, State. Particularly, among the edge portions, the four corner portions have a 1/4 square shape because the surface tension largely acts, and the round is formed larger than the other portions.

As shown in Fig. 20, when the liquid crystal panel S1 and the cover panel S2 are bonded in this state, a clearance is formed between the edge of the adhesive layer R1 and the frame line of the inner frame F of the cover panel S2 There is a possibility that this may occur. In addition, the coating shape can be controlled by considering the size of the round formed at the edge portion. However, since the rounded portion is formed larger at four corners of the edge portion than at the straight portion, There is a possibility that a clearance of a size that can be visually recognized may occur.

In recent years, the display area of the display panel has been required to be enlarged, and the width of the print frame has been required to be as narrow as possible. If there is such a strict demand, if there is a slight gap, there is a possibility that the product becomes defective in terms of appearance. When the display panel is bonded to the touch panel or the like, the edge of the edge of the adhesive layer is present in the display area if there is a portion of the edge of the bonding surface that is not filled with the adhesive, irrespective of the print frame, . In any case, peeling or the like easily occurs from the gap portion, which affects the life of the product.

An object of the present invention is to provide a high quality display device member by inducing an adhesive layer so as to prevent a gap from being formed between the edge portion of the adhesive layer and the work in order to solve the above- And to provide a manufacturing apparatus and a manufacturing method of a member for a display device that can improve the yield of a product.

In order to achieve the above object, the present invention provides an apparatus for producing a member for a display device in which a pair of works constituting a display device are bonded with an adhesive, wherein at least one of the pair of works has the adhesive And an adhesive layer guiding portion forming device for guiding the adhesive layer guiding portion to at least one of the pair of works so that the adhesive layer formed on one of the pair of works is brought into contact with the other work piece, Wherein the adhesive layer guiding portion includes at least a portion of the edge portion of the adhesive layer formed on one of the workpieces in the bonding apparatus for guiding at least a part of the edge portion of the adhesive layer to a position for contacting the other workpiece, Of the present invention.

The present invention also provides a method of manufacturing a member for a display device in which a pair of works constituting a display device are bonded via an adhesive agent, wherein the adhesive agent is applied to at least one of the pair of workpieces in the form of a surface, An adhesive layer guiding portion forming process for forming an adhesive layer guiding portion on at least one of the pair of the workpieces and a bonding process for bonding the pair of works by bringing the adhesive layer formed on one of the workpieces into contact with the other workpieces, Wherein the adhesive layer guiding portion induces at least a part of the edge portion of the adhesive layer formed on one of the workpieces in a position of contact with the other workpiece in the bonding treatment.

INDUSTRIAL APPLICABILITY As described above, according to the present invention, by forming the adhesive layer guide portion and guiding the edge portion of the adhesive layer to the position of contact with the opposed work, it is possible to prevent a gap from being generated between the adhesive layer and the work, It is possible to manufacture a member for a display device having a good appearance, and the yield of the product can also be improved.

1 is a schematic configuration diagram of an apparatus for manufacturing a member for a display device according to a first embodiment of the present invention.
Fig. 2 (A) is a schematic configuration diagram of an adhesive application device. Fig. 2 (B) is a schematic diagram showing application of an adhesive.
3 is a view showing a schematic configuration and operation of the bonding apparatus.
Fig. 4 is a view showing a schematic configuration and operation of the curing device.
Fig. 5 is a schematic configuration diagram of the transfer device.
Fig. 6 is a schematic configuration diagram of the imaging device and the adhesive layer guide portion forming device seen from the transverse direction of the transporting device.
7 is a view showing an adhesive application processing.
8 is a diagram showing an image pickup process and a position detection process.
9 is a view showing an adhesive layer guiding portion forming process.
10A and 10B are cross-sectional side views of the liquid crystal panel and the cover panel at the time of bonding, and FIG. 10B is a view of the laminated body after the bonding from the upper surface side of the cover panel.
11 is a schematic block diagram of an adhesive applying device in an apparatus for producing a member for a display device according to a second embodiment of the present invention.
(B) is a side view of a liquid crystal panel in which an adhesive layer guiding portion is formed, and (C) is a view showing a state in which an adhesive layer guiding portion is formed And is a top view of the liquid crystal panel.
13A is a side view of the liquid crystal panel showing a state in which the adhesive layer is guided to the adhesive layer guide portion, FIG. 13B is a side view of the liquid crystal panel showing a state in which the adhesive layer is led to the edge portion of the liquid crystal panel, And the cover panel is joined to the panel.
14 (A) is a partial perspective view of a liquid crystal panel showing a state in which an adhesive layer is guided to an adhesive layer guide portion, and Fig. 14 (B) is a partial perspective view of a liquid crystal panel showing a state in which an adhesive layer is led to an edge portion of the liquid crystal panel.
15 is a schematic configuration diagram of a transport apparatus according to another embodiment of the present invention.
16 is a view showing an adhesive layer guiding portion forming process according to another embodiment of the present invention.
17 is a view showing an adhesive layer guiding portion forming process according to another embodiment of the present invention.
18 is a view showing an adhesive layer guiding portion forming process according to another embodiment of the present invention.
19 (A) is a top view of a liquid crystal panel having an adhesive layer formed thereon. (B) is a side view of a liquid crystal panel in which an adhesive layer is formed. (C) is a bottom view of the cover panel. (D) is a side view of the cover panel.
Fig. 20 is a cross-sectional view of a liquid crystal panel and a cover panel at the time of bonding, and Fig. 20 (B) is a cross-sectional view of the liquid crystal panel and the cover panel at the time of bonding, FIG.

[First Embodiment]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the drawings.

[Configuration]

First, the configuration of the present embodiment will be described with reference to Figs. 1 to 6. Fig.

[work]

The present apparatus is an apparatus for producing a member for a display device for producing a laminate of members for a display device. 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, a member in which a cover panel and a touch panel are laminated, and a member having no display function only in the member . In other words, there are various kinds of work to be stacked, such as a display panel, a touch panel, a cover panel, a backlight and a light guide plate. In this embodiment, the display panel and the cover panel as the second work, To constitute a display device member will be described.

The display panel has various types such as a liquid crystal panel and an organic EL panel. The display panel has a variety of shapes. Here, as an example, a rectangular liquid crystal panel S1 as shown in Figs. 19 (A) An example of use will be described. The adhesive may be applied either to the liquid crystal panel S1 or the cover panel S2, or to both the liquid crystal panel S1 and the cover panel S2. In this embodiment, as shown in Fig. 19B, an example of forming the adhesive layer R1 by applying an adhesive to the surface of the liquid crystal panel S1 to a predetermined thickness will be described. The adhesive is applied so as to spread over the entire surface of the liquid crystal panel S1, but the application is performed so as to leave the outer edge of the liquid crystal panel S1 slightly to prevent the adhesive from being pushed out from between the panels at the time of bonding. That is, the adhesive layer R1 has the same rectangular shape as the liquid crystal panel S1 and is slightly smaller than the liquid crystal panel S1.

There are various kinds and shapes of the cover panel, but in this embodiment, as shown in Figs. 19C and 19D, a rectangular cover panel S2 larger than the liquid crystal panel S1 is used. On the bottom surface side of the cover panel S2, a print frame P having a predetermined width is formed so as to surround the outer edge. That is, the inner frame F surrounded by the printing frame P is formed on the cover panel S2 when viewed from the bottom. In the example of Figs. 19C and 19D, the inner frame F has a rectangular shape with rounded corners at four corners. However, the inner frame F is not limited to the example shown in Fig. 19 and may be another polygonal shape such as a pentagon, a hexagon, The four corners may be at a right angle viewed from the top. In addition, as shown in Fig. 19 (D), the four corners of the inner frame F are substantially at right angles when viewed from the end face. The size of the inner frame F is slightly smaller than that of the liquid crystal panel S1. The above-described adhesive layer R1 is applied so as to have a top shape and a roughly same size as the inner frame F. [

[Manufacturing apparatus for member for display device]

In the present embodiment, the manufacturing apparatus for a display device is manufactured by applying the adhesive to the above-described liquid crystal panel S1 and bonding the liquid crystal panel S1 and the cover panel S2, do. 1, the display device manufacturing apparatus 100 includes an adhesive applying device 1, a bonding device 2, a curing device 3, a transport device 4, and a control device 7 Respectively.

The liquid crystal panel S1 and the cover panel S2 are carried by the loader 200 to the display device manufacturing apparatus 100 and conveyed by the conveying device 4. [ The adhesive applying device 1, the bonding device 2 and the curing device 3 are disposed along the transfer device 4. [ The liquid crystal panel S1 and the cover panel S2 are picked up from the conveying device 4 by a pickup means not shown and carried into and out of each device via a return opening not shown. The display device member L is manufactured through the process in each device and is taken out of the manufacturing apparatus 100 for a display device by the unloader 300. [ The configuration and operation of each device will be described in detail below.

[Adhesive application device (1)]

As the application portion of the adhesive applying device 1 and the display device manufacturing device 100, the adhesive R is applied to the surface of the work, and the adhesive layer R1 is formed. In the present embodiment, an example of applying the adhesive R to the surface of the liquid crystal panel S1 as described above is described, but the cover panel S2 may be coated or coated on both panels good.

2 (A), the adhesive applying apparatus 1 includes a support unit 11 for supporting the liquid crystal panel S1 so as to be reciprocatable in the horizontal direction, And a coating unit (12).

The support unit 11 supports the liquid crystal panel S1 in the adhesive application device 1 with the application side facing upward. The supporting unit 11 has a stage 11a and a driving mechanism 11b. The stage 11a is a flat plate on which the liquid crystal panel S1 is mounted. The driving mechanism 11b is a mechanism for reciprocating the stage 11a in the horizontal direction. As the drive mechanism 11b, for example, a ball screw that rotates by a driving source may be used. However, any device may be used as far as the mounted liquid crystal panel S1 can reciprocate in the horizontal direction. The start, stop, and speed of the movement of the stage 11a in the drive mechanism 11b are controlled by the control device 7.

The application unit 12 applies an adhesive R to the liquid crystal panel S1. The coating unit 12 is provided with a tank T for containing the adhesive R and a dispenser 14. The tank T is connected to the dispenser 14 via a pipe which is the flow path of the adhesive R and a valve which regulates the supply amount of the adhesive R. The dispenser 14 can be, for example, a slit coater having slits for supplying the liquid crystal panel S1 with an adhesive R in the form of a plane by means of a pump.

The slit is an opening parallel to the application surface of the liquid crystal panel S1 and elongated in a direction orthogonal to the direction of relative movement of the liquid crystal panel S1 and the length in the longitudinal direction is equal to the width of the liquid crystal panel S1 Or slightly shorter. The tip end portion of the dispenser 14 forms such a slit as a nozzle (slit nozzle) provided at a position opposed to the liquid crystal panel S1 mounted on the stage 11a.

The stage 11a on which the liquid crystal panel S1 is mounted is moved under the nozzle while discharging the adhesive from the nozzle so that the liquid crystal panel S1 is adhered to the liquid crystal panel S1 (R) is applied, and a rectangular adhesive layer R1 is formed. Almost in the foreground, the column means to leave a part of the edge slightly. As described above, the size of the inner frame F of the cover panel S2 is slightly smaller than that of the liquid crystal panel S1. Therefore, by applying the adhesive layer R1 so as to slightly leave the edge of the liquid crystal panel S1, an adhesive layer R1 having a top-like shape and substantially the same size as the inner frame F can be formed.

However, as shown in Figs. 19 (A) and 19 (B), the edge portion of the adhesive layer R1 becomes a curved surface due to the action of surface tension. Particularly, since the surface tension acts largely on the portions of the four corners, the round becomes large and becomes a quarter of a square. The ¼ spherical image means that the spherical image is formed into a curved surface even when viewed from the horizontal. On the other hand, the four corners of the inner frame F of the cover panel S2 are substantially perpendicular to each other in cross section. In the bonding, the outer edge of the adhesive layer R1 applied to the liquid crystal panel S1 is laminated so as to overlap or contact with the line of the inner frame F of the cover panel S2. However, the four corners of the adhesive layer R1 are largely rounded. 20A, the four corners of the adhesive layer R1 are positioned at a position C (hereinafter simply referred to as " contact position C ) &Quot;) is not reached. 20 (B), when the four corners of the adhesive layer R1 and the four corners of the inner frame F of the cover panel S2 are in contact with the cover panel S2 in this state, As shown in FIG.

As the adhesive R used in the adhesive applying apparatus 1, a resin which is cured by irradiation of energy from the outside is used in order to perform a curing treatment in the curing apparatus 3 to be described later. For example, ultraviolet (UV) curing resin, thermosetting resin, other electromagnetic radiation, resin curing by energy such as radiation, and the like are conceivable. In the present embodiment, a UV curable resin is used. The viscosity of the adhesive (R) to be used is not particularly limited.

Although the case where the stage 11a is provided with the driving mechanism and the stage 11a is moved toward the coating unit 12 has been described, the movement is relatively preferable. That is, the stage 11a may be fixed, and the coating unit 12 may be provided with a driving mechanism and moved toward the stage 11a.

[Bonding device (2)]

The joining device 2 is a joining portion of the manufacturing apparatus 100 for a display device member, and the liquid crystal panel S1 and the cover panel S2 are laminated and bonded.

As shown in Fig. 3 (A), the bonding apparatus 2 has a structure in which the lower plate 22 and the upper plate 23 are arranged in a face-to-face relation in the chamber 21. [ The lower plate 22 and the upper plate 23 are opened to the outside and the liquid crystal panel S1 and the cover panel S2 can be carried. The lower plate 22 and the upper plate 23 are accommodated in the chamber 21 and a closed space is formed in the chamber 21. [ The chamber 21 is capable of adjusting the internal pressure by an exhaust means not shown. That is, when the liquid crystal panel S1 and the cover panel S2 are brought into the chamber 21, the chamber 21 is lowered, the inside is closed, the pressure is reduced, and the bonding is performed under a reduced pressure atmosphere.

In this embodiment, as an example, a case is described in which the liquid crystal panel S1 on which the adhesive R is applied is supported on the lower plate 22, and the cover panel S2 is held on the upper plate 23. Fig.

As the holding mechanism of the upper plate 23, any holding mechanism available now or in the future, such as an electrostatic chuck, a mechanical chuck, a vacuum chuck, an adhesive chuck, etc., is applicable. It is also possible to use a plurality of kinds of chucks together. The upper plate 23 is provided with a drive mechanism 25. By this drive mechanism 25, the upper plate 23 is movable in the horizontal direction and in the vertical direction.

The upper plate 23 is moved in the horizontal direction so that the alignment of the liquid crystal panel S1 with the cover panel S2 is performed. 3 (B), the upper plate 23 moves downward, and the held cover panel S2 is pressed against the liquid crystal panel S1 held by the lower plate 22 and laminated . The liquid crystal panel S1 and the cover panel S2 are bonded to each other via an adhesive R applied to the surface of the liquid crystal panel S1 to form a laminate S10.

The lower plate 22 may have the same holding mechanism as that of the upper plate 23 so that the position of the supported liquid crystal panel S1 is not shifted. Further, instead of the upper plate 23, the lower plate 22 may be moved in the horizontal direction to perform alignment. Of course, both of the upper plate 23 and the lower plate 22 may move in the horizontal direction.

[Curing Apparatus (3)]

The hardening device 3 hardens the adhesive layer R1 joining the liquid crystal panel S1 and the cover panel S2 as the hardened portion of the manufacturing apparatus 100 for a display device member. As shown in Fig. 4, the curing apparatus 3 includes a stacking table 31 on which the stacked body S10 is stacked, and a stacking unit 33 disposed on the stacking table 31. As shown in Fig.

The irradiation unit 33 is constituted by a device for irradiating the curing energy. The kind of energy to be irradiated can be appropriately selected from electromagnetic waves such as ultraviolet rays, infrared rays, and radiation consisting of particle rays depending on the kind of the adhesive R used. When a UV curable resin is used as the adhesive (R), the irradiation unit (33) can be composed of one or more lamps or LEDs capable of emitting UV, for example. The irradiation of the irradiation unit 33 is adjusted so as to irradiate an amount of energy necessary for curing the adhesive layer R1. The amount of this energy is adjusted according to the intensity and time of the survey.

[Transport device (4)]

The transport apparatus 4 constitutes a transport section of the manufacturing apparatus 100 for a display device member. The conveying device 4 includes a conveying part for conveying the liquid crystal panel S1 and the cover panel S2 to each part of the above-described adhesive applying device 1, the bonding device 2 and the curing device 3, . As the carry section, for example, a turntable, a conveyor, a pick-up means provided so as to be able to run on a rail, and the like can be considered, but any device capable of carrying the liquid crystal panel S1 and the cover panel S2 between the above- good.

In this embodiment, as shown in Fig. 5, an example in which the conveyor 40 is used as the carry section will be described. The liquid crystal panel S1 and the cover panel S2 are stacked on the conveyor 40 and conveyed. The adhesive applying device 1, the bonding device 2 and the curing device 3 are arranged along the conveyor 40 and the conveying of the panels from the conveyor 40 to the respective devices is carried out by a pick- It is possible to carry out.

Here, for convenience of explanation, a direction in which both panels are conveyed by the conveyor 40 is referred to as a " conveying direction ", and a direction orthogonal to the conveying direction on the conveyor 40 is referred to as a " traverse direction ". The side of the loader 200 in the conveying direction of the conveyor 40 is referred to as the " upstream side ", and the side of the unloader 300 is referred to as the " The side close to the adhesive application device 1, the bonding device 2 and the curing device 3 in the transverse direction of the conveyor 40 is referred to as the "inside side" and the far side is referred to as the "front side".

The transfer device 4 is provided with an imaging device 5 and an adhesive layer guiding part forming device 6 so as to be adjacent to each other in the transverse direction. The image pickup device 5 and the adhesive layer guide portion forming device 6 are disposed between the adhesive agent applying device 1 and the bonding device 2 on the conveyor 40. [ 6, the image capturing apparatus 5 includes a camera body 51a disposed above the conveyor 40 and a lens barrel 51b extending from the camera body 51a toward the conveyor 40 .

The adhesive layer guiding portion forming device 6 is disposed on the conveying front side of the imaging device 5. [ The adhesive layer guiding portion forming device 6 forms the adhesive layer guiding portion RG. The adhesive layer guide RG guides the adhesive R at the edge of the adhesive layer R1 formed on the liquid crystal panel S1 in the adhesive applicator 1 to a predetermined position. In the case of the rectangular liquid crystal panel S1, the four corners of the adhesive R are guided to the contact position C with the cover panel S2 at a predetermined position. The adhesive layer guiding portion RG may be formed as a result of inducing the adhesive layer R1 at the time of bonding in the bonding apparatus 2. The formation may be performed on the liquid crystal panel S1 on which the adhesive layer R1 is formed, The cover panel S2 may be used. In the present embodiment, the adhesive layer guide RG is formed at four corners of the inner frame F of the cover panel S2, which is a portion where the four corners of the adhesive layer R1 should contact at the time of bonding.

The method of forming the adhesive layer guiding portion RG is not limited to one method, but can be formed by supplying a good adhesive material to one of the panels. The good adhesive material means a material having high affinity with the adhesive, and when the adhesive layer applied to the liquid crystal panel S1 comes into contact with the adhesive, the primer is primed to induce the adhesive R. The good adhesive material is not limited to a specific material, but in the present embodiment, the adhesive R10 is used as an example. The adhesive R10 is not limited to the same adhesive as the adhesive R applied to the liquid crystal panel S1, and different ones may be used. The adhesive R10 that forms the adhesive layer guide RG does not need to be applied as thick as the adhesive R that forms the adhesive layer R1 so long as it plays a role as priming and therefore the worry about the disintegration of the adhesive layer R1 none. Therefore, a resin having a viscosity lower than that of the adhesive R may be used.

6, the adhesive layer guiding portion forming device 6 includes a tank T10 for containing an adhesive R10 for forming the adhesive layer guiding portion RG, and a dispenser 61. As shown in Fig. The tank T10 is connected to the dispenser 61 via a pipe which is a flow path of the adhesive R and a valve which regulates the supply amount of the adhesive R.

The dispenser 61 is not limited to a specific one as long as it is capable of supplying the adhesive R10. Considering the function of priming the adhesive R, the adhesive R10 is limited to a portion to which the adhesive R is to be guided, It is preferable that it can be applied thinly. Therefore, for example, a transfer apparatus that transfers the adhesive by pressing the adhesive onto the application surface can be used. In this embodiment, as an example of such a transfer device, an example using a stamped nozzle will be described. The adhesive R10 for forming the adhesive layer guiding portion RG is hereinafter referred to as " stamp adhesive R10 ". In Fig. 6 and the subsequent drawings, the thickness of the adhesive layer guiding portion RG is exaggerated to show a large thickness, and does not reflect the actual size.

The dispenser 61 is attached to a lens barrel 51b of the imaging device 5 through a fixture (not shown), and the tip of the nozzle is arranged to face the upper surface of the conveyor 40. [ The position of the nozzle tip is arranged so as to be located lower than the tip of the lens barrel. The shape of the tip of the nozzle may be a rectangle having rounded corners so that the adhesive layer guide RG can be formed along four corners of the inner frame F of the cover panel S2. Alternatively, it may be formed into a right triangular shape so that a rectangular portion touches the corners of four corners.

The image pickup device 5 is connected to a drive mechanism (not shown). With this drive mechanism, the image pickup device 5 can move at least in the transverse direction and the vertical direction. Since the dispenser 61 of the adhesive layer guiding portion forming device 6 is connected to the lens barrel 51b of the imaging device 5 as described above, the adhesive layer guiding portion forming device 6 is integrally formed with the imaging device 5 Move to enemy. Alternatively, the imaging device 5 and the adhesive layer guiding portion forming device 6 may not be connected to each other, but a driving mechanism may be provided for each of them, and the moving device may move independently or synchronously.

The image pickup device 5 is provided with the liquid crystal panel S1 and the cover panel S2 which are conveyed on the conveyor 40 by the combination of the movement of the conveyor 40 in the conveying direction and the movement of the drive mechanism in the transverse direction, It is possible to capture a desired portion of the image. The adhesive layer guiding portion forming device 6 is provided on the conveyor 40 so as to cover the liquid crystal panel S1 (S1) conveyed by the combination of the movement of the conveyor 40 in the conveying direction and the movement of the driving mechanism in the transverse direction and the vertical direction, ) Or a desired portion of the cover panel S2 can be formed.

As described above, the tip of the nozzle of the adhesive layer guiding portion forming device 6 is positioned below the tip of the lens barrel of the image pickup device 5. [ The tip end of the nozzle of the adhesive layer guiding portion forming device 6 comes into contact with the coated surface before the lens barrel 51b when the driving mechanism is moved downward. Therefore, the adhesive R10 is transferred without being disturbed by the lens barrel 51b can do. The detailed operation of the imaging device 5 and the adhesive layer guide portion forming device 6 will be described in detail in the section of the operation.

[Control device 7]

The control device 7 is an apparatus for controlling the operation of the manufacturing apparatus 100 for a display device member. The control device 7 controls the operation of the devices constituting each part, the control of the transport timing of the liquid crystal panel S1 and the cover panel S2, and further the detection processing and the calculation processing necessary for the operation of each device.

In the present embodiment, the control device 7 performs the position detection processing particularly using the image obtained in the image pickup device 5. [ Further, by using the position information detected in the position detecting process, the control of the operation of the adhesive layer guide portion forming device 6 and the control of the positioning operation in the bonding portion are performed. The control unit 7 further includes a storage unit, and the storage unit stores reference values and the like necessary for the above-described processing. The details of the above-described processing of the control device 7 will be described in detail in the section of the operation.

The control device 7 is implemented by, for example, a dedicated electronic circuit or a computer operating with a predetermined program. Alternatively, an input device such as a switch, a touch panel, a keyboard, or a mouse may be connected to the control device 7 so that the operator can operate the control device 7. Further, an output device such as a display, a lamp, or a meter for checking the status of the device or the panel may be connected.

[Action]

The operation of the present embodiment having the above-described structure will be described with reference to Figs. 7 to 10 in addition to Figs. 1 to 6. Fig. The positions and sizes of the respective devices, the liquid crystal panel S1 and the cover panel S2 are merely expressions for convenience.

First, as shown in Fig. 1, the liquid crystal panel S1 and the cover panel S2 are carried by the loader 200 to the display device manufacturing apparatus 100, and the conveyor 4 40). Each panel is transported so that the surface to be the bonding surface is the upper side. That is, in the present embodiment, the liquid crystal panel S1 is stacked so that the surface on which the adhesive layer R1 is formed faces upward, and the cover panel S2 is placed on the conveyor 40).

[Adhesive application treatment]

As shown in Fig. 7 (A), the liquid crystal panel S1 is picked up by a pick-up means (not shown) and is stacked on the stage 11a of the adhesive applicator 1. The stage 11a starts moving in the direction toward the coating unit 12 (hereinafter referred to as " moving direction ") by the driving mechanism.

As shown in Fig. 7 (B), the coating unit 12 starts discharging the adhesive R at the tip end position of the slit nozzle, at the position where the liquid crystal panel S1 starts to be sprayed. Since the stage 11a continues to move, the adhesive R is applied on the surface of the liquid crystal panel S1 as shown in Fig. 7 (C). As shown in Fig. 7 (D), the discharge of the adhesive R is terminated at the tip end position of the slit nozzle where the end position of the liquid crystal panel S1 is filled. The start position of the liquid crystal panel S1 is an end (one end in the drawing) of one side of the liquid crystal panel S1, and the end position of the liquid crystal panel S1 is an end (right end in FIG.

A rectangular adhesive layer R1 is formed on the upper surface of the liquid crystal panel S1 by the movement of the stage 11a and the dispensing of the adhesive R by the coating unit 12. [ The adhesive layer R1 is formed so as to have a top shape and a substantially same size as the inner frame F of the cover panel S2 to which the liquid crystal panel S1 is bonded. Means a shape and a size in which the outer edge of the adhesive layer R1 substantially overlaps the outer edge of the inner frame F when the liquid crystal panel S1 and the cover panel S2 are bonded . In addition, even in the case of " topology and the same size ", it does not mean that only the sizes match exactly, but includes " approximately the same size "

However, as described above, since the surface tension acts on the edge portion of the adhesive layer R1, it is curved (see Figs. 19A and 19B). In particular, It becomes a spherical shape. Therefore, when the cover panel S2 is joined to the cover panel S2 in a state where the cover panel S2 does not reach the contact position C with the four corners of the inner frame F (see Fig. 20 (A)), A gap is formed between the edges or four corners of the adhesive layer R1 and the edges or four corners of the inner frame F of the cover panel S2 (see Fig. 20 (B)).

[Image pickup processing, position detection processing, and adhesive layer guide portion formation processing]

The liquid crystal panel S1 on which the adhesive layer R1 is formed is taken out of the adhesive agent applying device 1 by a pickup means not shown in the drawing and is again placed on the conveyor 40 of the conveyor device 4, . As shown in Fig. 5, the liquid crystal panel S1 and the cover panel S2 are stacked so as to be adjacent to each other in the transverse direction of the conveyor 40, and approximately parallel to each other. Although the figure shows an example in which the liquid crystal panel S1 is mounted on the inner side of the conveyor 40 and the cover panel S2 is mounted on the front side of the conveyor 40, the mounting position is not limited to this, S1 on the front side of the conveyor 40 and the cover panel S2 on the inside of the conveyor 40. [ The liquid crystal panel S1 and the cover panel S2 are conveyed on the conveyor 40 and moved to below the imaging device 5 and the adhesive layer guide portion forming device 6. [

Here, the image pickup processing by the image pickup device 5, the position detection processing by the control device 7, and the adhesive layer guide portion forming process by the adhesive layer guide portion forming device 6 are performed.

The image pickup processing and the position detection processing are performed in order to acquire data used for positioning of both panels in a joining process to be described later. The liquid crystal panel S1 and the cover panel S2 are formed so that the outer edge of the adhesive layer R1 formed on the liquid crystal panel S1 overlaps the line of the inner frame F of the cover panel S2 Respectively. That is, four corners of the adhesive layer R1 formed on the liquid crystal panel S1 and four corners of the inner frame F of the cover panel S2 (hereinafter simply referred to as " four corners of the cover panel S2 " The bonding is performed so as to match. If there are deviations in the positions of the four corners of both panels, the deviation must be corrected before joining. 9A and 9B) of the four corners of the liquid crystal panel S1 and the inner frame F of the cover panel S2 in the image pickup processing And the coordinates of the four corners of both panels are specified in the position detection processing.

The coordinates of the four corners of the inner frame F of the cover panel S2 acquired for alignment in this bonding process are also used in the adhesive layer guide portion forming process. As described above, the adhesive layer guide RG is formed at the four corners of the inner frame F of the cover panel S2 so as to guide four corners of the adhesive layer R1 at the time of bonding. Here, by using the coordinates of the four corners specified for the alignment of the two panels, it is possible to form the adhesive layer guide portion RG at the correct position.

The image pickup process, the position detection process and the adhesive layer guide portion forming process may be carried out separately from each other. However, the movement of the conveyor 40 in the carrying direction and the transverse direction of the image pickup device 5 and the adhesive layer guide portion forming device 6, Can be combined and moved concurrently.

8 (A), the liquid crystal panel S1 and the cover panel S2 are first moved in the conveying direction of the conveyor 40 on which the conveyor 40 is mounted, and the end portion located on the upstream side of the panel (Hereinafter referred to as " front end ") is positioned below the image pickup device 5. [ Next, as shown in Fig. 8 (B), the imaging apparatus 5 is moved in the transverse direction from the front side to the back side of the apparatus, and stops at the positions of the corners to acquire images including the corners. The movement amount and the stop position of the conveyor 40 and the image pickup device 5 can be predetermined in accordance with the dimensions of the panel and stored in the storage unit of the control device 7. [

The control device 7 performs position detection processing each time the image pickup device 5 acquires an image of each corner. As the position detection, a known method can be used. For example, with respect to the liquid crystal panel S1, an image is analyzed to detect the outline of the panel, and a predetermined range centered on the intersection of two sides of the panel is specified as an edge, and its coordinates are obtained. The cover panel S2 is similarly analyzed to detect the outline of the inner frame F and a predetermined range centered on the intersection of two sides of the frame line of the inner frame F is specified as an edge, I ask.

For the cover panel S2 on which the stamp adhesive R10 is transferred, the adhesive layer guiding portion forming process is also performed based on the coordinates obtained by the position detecting process after the position detecting process. The dispenser 61 of the adhesive layer guiding portion forming device 6 is moved to the coordinates of the corner specified in the control device 7. [ Then, the adhesive for stamping R10 is discharged from the dispenser 61.

9A, the dispenser 61 is moved to the coordinates of the respective corners of the inner frame F of the cover panel S2 when the adhesive layer guide portion forming process is performed on the cover panel S2 . Further, the dispenser 61 is lowered to press the nozzle tip against the edge of the cover panel S2. The adhesive for stamp R10 is discharged and transferred to the cover panel S2. The nozzle tip of the dispenser 61 is formed along the edge of the inner frame F of the cover panel S2 so that the adhesive agent R10 for stamping is applied to the cover panel S2, Is transferred along the edge of the inner frame (F) of the transfer sheet (S2), and the adhesive layer guiding portion (RG) is formed.

Since the dispenser 61 is connected to the imaging device 5 and is adjacent to the transverse direction, after the imaging device 5 picks up an edge, the imaging device 5 is moved to the front side or the back side of the device The dispenser 61 can be easily moved to the coordinates of the corner.

8A, when the conveyor 40 is moved in the conveying direction and is positioned on the downstream side of the liquid crystal panel S1 and the cover panel S2 (Hereinafter, referred to as " rear end ") is positioned below the image pickup device 5. [ Then, as shown in Fig. 8 (B), the image pickup device 5 is moved in the transverse direction from the inner side to the front side of the device, and each edge of the rear end side is imaged. The control device 7 performs the position detection processing every time an edge image is acquired and the cover layer S2 is also subjected to the adhesive layer guide portion forming process.

The order of the processing of each of the above-mentioned corners is an example, and the order can be changed appropriately. The movement of the conveyor 40 and the movement of the imaging device 5 and the adhesive layer guide portion forming device 6 may be relative to each other. For example, the imaging device 5 and the adhesive layer guide portion forming device 6 may be moved in the transverse direction Or may be moved in a direction opposite to the carrying direction.

[Joining Process]

The liquid crystal panel S1 and the cover panel S2 are brought into contact with each other when the imaging processing and the position detection processing of all the four corners of the liquid crystal panel S1 and the cover panel S2 and the adhesive layer guide portion forming processing to the cover panel S2 are completed, Is conveyed on the conveyor 40, and is carried into the bonding apparatus 2 by a pickup means (not shown). At this time, the carry-in is performed so that the coordinates of the respective edges detected in the above-described position detection processing are maintained.

As shown in Fig. 3 (A), in the bonding apparatus 2, the liquid crystal panel S1 on which the adhesive layer R1 is formed is placed on the lower plate 22. At this time, the surface on which the adhesive layer R1 is formed faces up. The cover panel S2 is inverted so that the joint surface faces downward, and is transmitted to the upper plate 23 and held by the holding mechanism. Both the panels are exchanged to maintain the detected position information in the conveying device 4. [

At this time, since the chamber 21 is moving upward, the lower plate 22 and the upper plate 23 are opened. When the transfer of both panels is completed, the chamber 21 is driven to be positioned at a lower position, and the lower plate 22 and the upper plate 23 are accommodated in the chamber 21. [ A sealed space is formed in the chamber 21, and the sealed space is depressurized by an exhausting means (not shown).

As described above, the liquid crystal panel S1 and the cover panel S2 are laminated so as to align their four corners, but there is a possibility that the position of each of the four corners is deviated. Therefore, S1) and the cover panel (S2). The position correction is performed based on the coordinates of the respective corners detected in the position detection processing of the transfer apparatus 4. [ For example, a positional reference value of each corner may be stored in advance in the storage unit of the control device 7, and the positional correction amount may be calculated from the difference between the positional reference value and the coordinates of each detected corner can do.

The positional deviation of the liquid crystal panel S1 and the cover panel S2 is corrected by moving the upper plate 23 in the x, y, and θ directions based on the calculated position correction amount. In this embodiment, the position correction is performed by moving the upper plate 23, but the position correction may be performed by moving both the lower plate 22 and the upper and lower plates 22 and 23.

The upper plate 23 is lowered toward the lower plate 22 and the cover panel S2 held by the upper plate 23 is lowered to the lower plate 22 as shown in Fig. To the liquid crystal panel (S1) supported by the liquid crystal panel (22). The adhesive layer R1 formed on the surface of the liquid crystal panel S1 is pressed against the lower plate 22 via the liquid crystal panel S1 and adhered to both the panels to join the two panels.

The action of the adhesive layer guide RG at the time of bonding is shown in Fig. As shown in Fig. 10 (A), when the both panels are bonded, four layers of the edge portion of the adhesive layer R1 in which the round is formed are bonded to the adhesive layer guide RG formed at the four corners of the inner frame F of the cover panel S2 Part of the edge touches. Then, as shown by the arrow in the circumference of the drawing, the adhesive layer guide RG becomes priming, and the four corners of the adhesive layer R1 are stretched, and at the contact position C with the cover panel S2, F). This can prevent a gap from being generated between the four corners of the curved adhesive layer R1 and the four corners of the inner frame F of the cover panel S2 which is substantially perpendicular to the cross section. That is, as shown in Fig. 10 (B), a layered product S10 having no gap between the print frame P and the adhesive layer R1 is formed.

When the junction of the liquid crystal panel S1 and the cover panel S2 is completed, the reduced pressure state is released, and the chamber 21 is moved upward to open the closed space. The layered product S10 is taken out of the bonding apparatus 2 and conveyed again by the conveying device 4. [ Subsequently, it is carried into the hardening device 3 by a pickup means not shown. In the course of transport from the bonding apparatus 2 to the curing apparatus 3, the layered product S10 may be left in the atmosphere for a certain period of time. In this settling time, the layered product S10 is pressed and stabilized by the atmospheric pressure. Further, even if voids remain in the adhesive layer (R1), the voids can also be reduced by leaving them for a sufficient time.

[Curing Treatment]

4, the layered product S10 is stacked on the stage 31 and irradiated by the irradiation unit 33 with ultraviolet light of the intensity necessary for curing the adhesive layer R1 The final curing of the adhesive layer R1 is completed.

[effect]

(1) In the manufacturing apparatus 100 for a display device according to the present embodiment, a pair of workpieces consisting of a liquid crystal panel S1 and a cover panel S2 constituting a display device are bonded to each other via an adhesive agent R (1) for forming an adhesive layer (R1) by applying an adhesive (R) on a liquid crystal panel (S1), and an adhesive applying device And a bonding apparatus 2 for bonding the pair of works by bringing the adhesive layer R1 formed on the liquid crystal panel S1 into contact with the cover panel S2, The adhesive layer guide RG guides at least a part of the edge portion of the adhesive layer R1 to the contact position C in contact with the cover panel S2 in the bonding apparatus 2.

The edge portion of the adhesive layer R1 does not reach the contact position C with the cover panel S2 at the time of bonding so that the edge portion of the adhesive layer R1 does not reach the contact position C with the cover panel S2 It is possible to form a gap, but it is possible to prevent the occurrence of gaps by forming the adhesive layer guiding portion RG and guiding the edge portion to the contact position C with the cover panel S2. As a result, it is possible to manufacture the member (L) for a display device having a good appearance and to improve the yield of the product. In addition, by forming the adhesive layer guide RG, it is not necessary to strictly control the shape of the edge portion of the adhesive layer R1 when the adhesive R is applied in the adhesive applicator 1. Accordingly, various kinds of adhesives and panels can be applied, and the influence of the variation in the application environment of the adhesive can be reduced, so that the maintenance, the condition and the like can be simplified. Therefore, the application range of the display device manufacturing apparatus can be widened and the productivity can be improved.

(2) Specifically, in the cover panel S2, a rectangular inner frame F of polygonal shape is formed. The adhesive applying device (1) forms an adhesive layer (R1) having a top shape and a substantially same size as the inner frame on the liquid crystal panel (S1). The liquid crystal panel S1 and the cover panel S2 are bonded so that the adhesive layer R1 is contained in the inner frame F in the bonding apparatus 2. [ The adhesive layer guiding portion forming device 6 forms an adhesive layer guiding portion RG on at least a part of the edge portion of the inner frame F of the cover panel S2. The adhesive layer guiding portion RG guides at least a part of the edge portion of the adhesive layer R1 to reach the edge portion of the inner frame F at the time of bonding.

In this manner, also in the bonding with the cover panel S2 in which the inner frame F is formed, the adhesive layer guiding portion RG also prevents the edge portion of the adhesive layer R1 from reaching the edge portion of the inner frame F of the cover panel S2 It is possible to prevent a visible gap between the inner frame F and the inner frame F from being generated. Thus, it is possible to form the member L for a display device excellent in appearance.

(3) More specifically, the rectangular inner frame F of the cover panel S2 has almost corners at almost right angles. Particularly, since the display area is enlarged, there are few rounds provided at four corners. Further, each edge of the edge portion of the adhesive layer R1 coated with a rectangle becomes a curved surface shape after application.

Of the edge portions of the adhesive layer R1, four corners at which the surface tension largely acts have a larger curved surface, so that there is a high possibility that the gap between the cover panel S2 and the adhesive exceeds the allowable range. Therefore, even if the edge portion of the adhesive layer R1 can be formed with a curved surface within an allowable range at the time of applying or immediately after the application of the adhesive R, the four corners may be out of the allowable range. Therefore, by forming the adhesive layer guiding portion RG at the edges of the adhesive layer R1, especially at four corners, it is possible to prevent the four corners of the adhesive layer R1 from falling outside the allowable range. That is, even if the stamp adhesive (R10) is not applied to the entire edge portion of the adhesive layer (R1), it is possible to produce a high-quality display member (L) in which the appearance defect due to the gap and the breakage due to peeling are reduced . Since it is not necessary to apply the stamp adhesive R10 to the entire edge of the adhesive layer R1, it is possible to shorten the formation time of the adhesive layer guide portion RG, and the adhesive layer guide portion forming device 6 can be configured in a simple manner .

(4) The display device manufacturing apparatus 100 further includes an image capturing apparatus 5 for capturing the liquid crystal panel S1 and the cover panel S2. The adhesive layer guide portion forming device 6 may form the adhesive layer guide portion RG with respect to the cover panel S2 on the basis of the images of the liquid crystal panel S1 and the cover panel S2 captured by the image pickup device 5. [ Thus, it is possible to form the adhesive layer guide portion RG at the correct position.

(5) The display apparatus manufacturing apparatus 100 includes a transfer apparatus 4 for transferring the liquid crystal panel S1 and the cover panel S2 between the adhesive applying apparatus 1 and the bonding apparatus 2 And the image pickup device 5 and the adhesive layer guide portion forming device 6 are provided adjacent to the transfer device 4. [ The joining apparatus 2 aligns the liquid crystal panel S1 and the cover panel S2 on the basis of the images of the liquid crystal panel S1 and the cover panel S2 captured by the image pickup device 5. [ That is, the image picked up by the image pickup device 5 is used not only for determining the formation position of the adhesive layer guide portion but also for positioning at the time of bonding. In other words, there is no need to provide a plurality of image pickup devices 5 for each process, and the manufacturing efficiency can be increased, and the number of parts can be reduced.

(6) The adhesive layer guiding portion RG may be formed of a good adhesive material. The adhesive layer can be guided smoothly by forming the adhesive layer guiding portion RG using a good adhesive material having high affinity with the adhesive.

(7) As the good adhesive material, an adhesive R10 whose viscosity is lower than that of the adhesive R forming the adhesive layer R1 may be used. The adhesive R10 forming the adhesive layer guiding portion RG may serve as priming and it is not necessary to apply the adhesive R R1 thickly as in the case of the adhesive R forming the adhesive layer R 1 so that the fear of collapse of the adhesive layer R 1 none. Therefore, by using those having a viscosity lower than that of the adhesive (R), the handling becomes easy, and the guide portion forming means can be simplified and the apparatus cost can be reduced.

(8) The adhesive layer guide portion forming device 6 may be provided with a stamp-type nozzle for pressing and transferring the adhesive R10 onto the application surface. Accordingly, the adhesive R10 can be thinly coated to a desired size, and it is possible to form the adhesive layer guide portion RG that matches the shape of the cover panel S2.

[Second Embodiment]

[Configuration]

Next, the second embodiment will be described with reference to Fig. In the following embodiments, the same constituent elements as those of the first embodiment are denoted by the same reference numerals, and a detailed description thereof will be omitted.

In the first embodiment, the adhesive layer guiding portion forming device 6 is provided in the conveying device 4. In the second embodiment, the adhesive layer guiding portion forming device 6 is provided at the front end of the adhesive applying device 1 .

Further, in the second embodiment, as shown in Fig. 11, the adhesive application device 1 is provided with a radiation unit 13 for performing the temporary curing treatment on the applied adhesive. The irradiation unit 13 is provided on the downstream side of the coating unit in the moving direction of the stage.

The irradiation unit 13 is a processing unit for irradiating the adhesive R with energy for hardening. The provisional hardening means that most of the adhesive (R) gels but does not completely harden. The type of energy to be irradiated can be appropriately selected from ultraviolet rays, infrared rays, electromagnetic waves, and radiation depending on the type of the adhesive R to be used. The viscosity of the adhesive having a high necessity of suppressing flow due to temporary curing is preferably 2000 to 5000 cps, which is estimated to be 2000 to tens of thousands cps and relatively low.

In this embodiment, since the UV-hardened resin is used for the adhesive R, the irradiation unit 13 has one or a plurality of irradiation sources such as LED, LD, and lamp capable of emitting ultraviolet rays (UV) The unit 13 is arranged above the stage 11a so as to be adjacent to the coating unit 12 and the irradiation source is attached so as to face the liquid crystal panel S1 mounted on the stage 11a. The energy irradiation can be continuously performed on the liquid crystal panel S1 to which the adhesive R is applied with the movement of the stage 11a.

The adhesive layer guide portion forming device 6 is provided on the downstream side of the irradiation unit 13 above the support unit 11. [ The adhesive layer guiding portion forming device 6 is provided with a tank T10 for accommodating the stamping adhesive R10 and a dispenser 62. [ The dispenser 62 uses a stamped nozzle as in the first embodiment. In the second embodiment, the dispenser 62 has a structure in which two nozzles are provided on a supporting portion extending along the transverse direction of the liquid crystal panel S1 as shown in Fig. 12 (A). The two nozzles are provided at intervals of substantially the same length as the width of the liquid crystal panel S1 in the transverse direction. When the liquid crystal panel S1 is positioned below the adhesive layer guiding portion forming device 6, And is positioned on the side of the liquid crystal panel S1 along the transverse direction.

The adhesive layer guiding portion forming device 6 is connected to a driving device (not shown), and is movable at least in a vertical direction. The adhesive layer guide portion forming device 6 may be fixed so that the stage 11a of the support unit 11 can be moved up and down.

[Action]

In the second embodiment, the adhesive layer guide portion forming process is performed on the liquid crystal panel S1 before the adhesive application process. That is, before the adhesive layer R1 is formed on the liquid crystal panel S1, the adhesive layer guide portion RG is previously formed on the liquid crystal panel S1. The adhesive layer guide RG is formed at a position corresponding to the contact position C (see Figs. 10A and 20A) of the liquid crystal panel S1. Specifically, it is formed at the position of the liquid crystal panel S1 facing the four corners of the inner frame F of the cover panel S2 at the time of bonding. As described above, since the liquid crystal panel S1 is slightly larger than the inner frame F of the cover panel, it is formed slightly inside the four corners of the outer edge of the liquid crystal panel S1. Thus, the four corners of the adhesive layer R1 formed after the adhesive layer guiding portion forming process are guided to the adhesive layer guiding portion RG and reach the contact position C. The specific operation of the adhesive layer guide portion forming process of the second embodiment will be described below.

The stage 11a of the supporting unit 11 moves and stops at the position where the downstream end of the liquid crystal panel S1 reaches below the adhesive layer guiding portion forming device 6. [

The adhesive layer guiding portion forming device 6 moves downward and presses the tips of the two nozzles to the bonding position on the liquid crystal panel S1, as shown in Fig. 12 (A). Therefore, the stamping adhesive R10 is discharged from the nozzle tip and transferred onto the liquid crystal panel S1 to form the adhesive layer guiding portion RG. Subsequently, the adhesive layer guiding portion forming device 6 is retracted in the upper direction and the stage 11a is moved in the downstream direction again so that the upstream end of the liquid crystal panel S1 is positioned below the adhesive layer guiding portion forming device 6 The stage 11a is stopped again at the point where it has reached. The adhesive layer guiding portion forming device 6 moves downward and the adhesive layer guiding portion forming device 6 discharges the stamp adhesive R10 from the two nozzles and transfers the same onto the liquid crystal panel S1 to form the adhesive layer guiding portion RG, . 12 (B) and 12 (C), at positions near the four corners of the liquid crystal panel S1, that is, at four corners of the inner frame F of the cover panel S2 at the time of bonding An adhesive layer guiding portion RG is formed.

The movement amount and the stop position of the above-described stage 11a are determined in advance in accordance with the dimensions of the liquid crystal panel S1 and the like and stored in the storage unit of the control device 7 You can.

The liquid crystal panel S1 on which the adhesive layer guide RG is formed moves to the lower side of the coating unit 12 by the further movement of the stage 11a and the adhesive agent is guided to the front surface of the liquid crystal panel S1 on which the adhesive layer guide RG is formed, (R) is applied to form an adhesive layer (R1). As shown in Fig. 13 (A) and Fig. 14 (A), the edge portion of the adhesive layer R1 partially rises on the adhesive layer guiding portion RG. As shown by the arrows in the drawing, the adhesive layer R1 is guided to the adhesive layer guiding portion RG side as it contacts the adhesive layer guiding portion RG, and as shown in Figs. 13B and 14B, And moves to the outer edge of the guide portion RG. That is, the adhesive layer R1 is guided by the adhesive layer guide RG to a position where it contacts the four corners of the inner frame F of the cover panel S2 at the time of bonding.

14 (B), the adhesive layer R1 and the adhesive layer guide RG are separated and displayed in order to make it easier to understand. Actually, after the adhesive layer R1 is guided to the adhesive layer guide RG, R1 and the adhesive layer guide RG are integrated.

The stage 11a also continues to move so that the irradiation unit 13 starts to irradiate energy where the starting end of the adhesive layer R1 is located below the irradiation unit 13. [ The stage 11a continues to move and the irradiation unit 13 finishes the irradiation where the end of the adhesive layer R1 has passed the irradiation unit 13. [ The adhesive layer R1 becomes in a state of hardening, and the adhesive layer R1 is in a state in which the flow is suppressed. It is possible to reduce the increase of the curved surface state due to the action of the surface tension again on the edge portion of the adhesive layer R1 by performing the temporary hardening immediately after the adhesive layer R1 is guided by the adhesive layer guiding portion RG. At this time, the total energy irradiated by the irradiation unit 13 may be adjusted to adjust the curing rate of the adhesive R. Alternatively, the curing rate of the adhesive R may be adjusted by adjusting the composition of the atmospheric gas at the portion irradiated with energy in the irradiation unit 13. In this case, a mechanism capable of covering the periphery of the adhesive layer R1 located under the irradiation unit 13 and adjusting the atmosphere inside the irradiation unit 13 may be provided. The curing rate of the adhesive R is about 80% or less, and particularly the curing can be performed to such an extent that fluidity remains on the surface of the adhesive layer R1. By doing so, even if the adhesive layer RG is adhered after adhering, the adhesive layer R1 can flow to reach the four corners of the cover panel S2.

In the joining apparatus 2, like the first embodiment, the liquid crystal panel S1 and the cover panel S2 are bonded. The four corners of the adhesive layer R1 are guided by the adhesive layer guiding portion RG to the positions where the four corners of the inner frame F of the cover panel S2 are brought into contact with each other, It is possible to prevent the occurrence of a gap with the four corners of the inner frame F of the panel S2.

In this embodiment, the adhesive layer guide portion forming device 6 is composed of two nozzles. However, the adhesive layer guide portion forming device 6 may be composed of four nozzles disposed at positions corresponding to the four corners of the liquid crystal panel. Accordingly, since the adhesive layer guiding portion forming process can be performed for four corners at one time, the manufacturing time can be shortened.

[effect]

(1) In the second embodiment, the adhesive layer guiding portion forming device 6 is provided at the front end of the adhesive applying device 1, and the adhesive layer guiding portion RG is provided on the liquid crystal panel S1 before the adhesive layer R1 is formed. . As a result, like in the first embodiment, the edge portion of the adhesive layer R1 can be guided to the contact position with the cover panel S2, and the occurrence of gaps can be prevented. As a result, it is possible to manufacture the member (L) for a display device having a good appearance and to improve the yield of the product.

(2) Further, by providing the irradiation unit 13 for irradiating energy to the rear end of the adhesive applying device 1 to harden the adhesive, the adhesive layer R1 guided to the contact position C by the adhesive layer guiding portion RG, And the shape thereof can be maintained until bonding. The temporary hardening treatment is not essential, but may be appropriately omitted in consideration of the viscosity of the adhesive R or the like. Particularly, in this embodiment, since the adhesive layer guiding portion RG is provided on the side of the liquid crystal panel S1 on which the adhesive layer R1 is formed, the adhesive layer guiding portion RG itself can be prevented from stopping And at least the contact surface of the adhesive layer R1 with the cover panel S2 can be prevented from flowing and spreading.

[Other Embodiments]

(1) In the above-described embodiment, the stamp-type nozzle is used to form the adhesive layer guide RG, but the present invention is not limited to this. For example, a jet nozzle or needle nozzle capable of applying a small droplet Can be used. When a plurality of jet nozzles capable of applying droplets of minute droplets are provided, a coating pattern can be formed in conformity with the shape to be coated like an inkjet print. As another transfer device, a transfer jig may be immersed in an adhesive reservoir, and the transfer jig may be pressed against the application surface to transfer the transfer jig. The shapes of the nozzles and the transfer jig can be appropriately changed so that the adhesive layer guide portion RG having the required shape can be formed according to the shape of the panel. For example, in the above-described embodiment, the inner frame F of the cover panel S2 has been described as an example in which rounding is formed at four corners in a rectangular shape, and the inner frame F is rectangular at a cross section. However, the present invention is not limited to this. For example, there may be no rounding at four corners, that is, a substantially right angle viewed from the horizontal. Alternatively, it may be formed in various shapes such as a round shape instead of a substantially right angle in cross section. By forming the adhesive layer guiding portion RG by changing the coating pattern flexibly with respect to the shape of the various inner frames F, it is possible to provide a device which can cope with various products and is highly convenient.

(2) The material for forming the adhesive layer guide RG is not limited to an adhesive but can be used if it is a material having good adhesive property. The coating thickness of the good adhesive material including the adhesive is preferably about several micrometers. In order to reduce the influence on the thickness of the adhesive layer R1, it is preferable that the adhesive layer guiding portion RG is thin. For example, when the thickness of the adhesive layer R1 is several tens to several hundreds of micrometers, the thickness of the adhesive layer R1 should be about 1/2 or less or 1/5 or less of the thickness of the adhesive layer R1.

(3) The adhesive layer guiding portion RG is not limited as long as it can guide the adhesive layer R1 to a desired position, and is formed of a material having good adhesive properties. For example, the adhesive layer guide portion may be formed by changing the roughness of the panel surface. &Quot; Changing the roughness " includes not only increasing the roughness but also making the surface smoother by reducing the roughness. When the roughness is increased, the adhesive layer guiding portion forming device 6 is provided with a means for imparting roughness to the surface of the panel such as sand blast, chemical etching, plasma etching, laser ablation or the like instead of the dispenser 61 or 62 . The portion where the roughness is imparted to the surface of the panel becomes the adhesive layer guiding portion RG and the four corners of the adhesive layer R1 are caused to flow to the position of contact with the inner frame F of the cover panel S2.

Further, by performing plasma treatment or the like on the adhesive layer guiding portion, the surface may be modified to promote the flow of the adhesive. For example, the adhesive layer guide portion may be formed by changing the active state of the panel surface. For example, when the surface of the panel is terminated with an OH (OH) group, the active state of the panel surface can be changed and a good adhesive property can be obtained. When a glass containing silica as a raw material is used as the panel, the hydroxyl group (OH group) can be brought into the end state by performing the oxidation treatment. As the oxidation treatment, oxidation plasma treatment or chemical solution treatment can be used.

Alternatively, the adhesive R may be applied to the liquid crystal panel S1 in the adhesive applying apparatus 1, and the four corners may be pressed with a predetermined force after the irradiation unit 13 is made thin. The pressurized portion becomes the adhesive layer guiding portion RG and the four corners of the adhesive layer R1 are caused to flow to the contact position with the inner frame F of the cover panel S2. The pressing can be performed by using, for example, a rectangular plate having the same size as that of the liquid crystal panel S1 and having only four corners protruding slightly downward.

(4) In the above-described embodiment, the example of the conveying device 4 having the conveyor 40 as the conveying portion for conveying the liquid crystal panel S1 and the cover panel S2 has been described, but the present invention is not limited to this. The carry section may be constituted such that holding means 41 provided with two arms 41a and 41b arranged in parallel up and down is arranged so as to be able to run on the rail 42 as shown in Fig. 15 .

The liquid crystal panel S1 and the cover panel S2 are held on each of the two arms 41a and 41b, and are conveyed in opposite rails. The image pickup device 5 and the adhesive layer guide portion forming device 6 are arranged so as to be positioned between the two arms 41a and 41b on the rail. In this case, the imaging apparatus 5 may be provided with cameras on both upper and lower sides, for example. Thus, the upper and lower panels can be imaged at the same time.

(5) In the above-described embodiment, the adhesive layer guiding portion RG is formed at four corners of the edge portion of the adhesive layer R1. However, the present invention is not limited to the four corners, and other portions of the edge portion, , Or may be formed on the entire edge portion. In this case, the adhesive layer guide portion forming device 6 may have the same structure as that of the above-described embodiment, but a multi-nozzle or needle nozzle capable of continuously applying a small amount of adhesive may be used. In addition, for example, the four corners of the adhesive layer R1 having a large round may be adjusted depending on the place, such that the application amount of the stamp adhesive R10 is increased and the application amount is decreased in the other linear portions. The formation of the adhesive layer guiding portion RG may be performed beforehand in another step before bringing the liquid crystal panel S1 into the manufacturing apparatus 100 for a display device.

(6) The display device manufacturing apparatus 100 may be provided with a device for performing a separate process before or after the adhesive applying device 1, the bonding device 2, and the curing device 3. For example, a taping unit for wrapping the completed liquid crystal display panel may be provided. Further, in the case where the curing treatment is not required depending on the type of the adhesive, or when the curing treatment is performed with a separate member device, the manufacturing apparatus 100 for a display device member without the curing device 3 may be used.

(7) In the above-described embodiment, the liquid crystal panel S1 is used as the first work and the cover panel S2 is used as the second work. Of course, the cover panel S2 is used as the first work, And the panel S1 may be the second work. That is, in the case of applying the first embodiment, the adhesive layer R1 may be formed on the cover panel S2 side and the adhesive layer guide portion RG may be formed on the liquid crystal panel S1 side. Alternatively, in the case of applying the second embodiment, the adhesive layer R1 may be formed after the adhesive layer guide RG is formed on the cover panel S2 side.

17, the edge of the inner frame F of the cover panel S2 is formed in the edge portion of the inner frame F. However, as shown in Fig. 17, The adhesive layer guiding portion RG may be formed over the printing frame P. [ In this case as well, the adhesive layer guiding portion RG may be formed so as to be guided to a position where the adhesive layer R1 should be in contact with the opposing liquid crystal panel S1.

The adhesive layer R1 may be formed on both of the liquid crystal panel S1 and the cover panel S2 instead of either. The adhesive layer guide RG may be formed on both of the liquid crystal panel S1 and the cover panel S2 instead of either. That is, the combination of the formation of the adhesive layer R1 in the pair of works and the formation of the adhesive layer guide portion RG can be determined freely. In any pattern, the adhesive layer guide RG can guide the edge portion of the adhesive layer R1 formed on one work to a contact position, which is a position where the edge of the adhesive layer R1 should be in contact with the other work.

Originally, in a pair of works to be bonded, it is ideal to apply an appropriate amount of the adhesive R to fill all of the joint portions with the adhesive layer R1. If the amount of the adhesive (R) is small, there is a fear that the portion which is not filled in the adhesive layer (R1) becomes a boundary line and the value of the product is lowered. If the amount of the adhesive R is large, the adhesive layer R1 is ejected from the joint portion, which may cause a deterioration in assembling property of the display device member. Even if the application amount is adjusted so that the adhesive layer R1 does not come out as much as possible, the surface tension acts on the edge portion of the adhesive layer R1, so that only a small area can be filled almost entirely. As described above, a portion that is not filled with only the adhesive R, that is, a portion of the work originally to be in contact with the adhesive is the contact position. The contact position C described in the above embodiment means all the positions where the adhesive layer R1 on the work should be in contact with the adhesive layer R1. By providing the adhesive layer guide RG, can do.

The liquid crystal panel S1 and the cover panel S2 are merely examples of work to be bonded. The liquid crystal panel S1 and the cover panel S2 are members that become a laminate constituting a display device. If the liquid crystal panel S1 and the cover panel S2 are coated with the adhesive R, It does not matter what kind, size, shape or material. Of course, it is also possible to attach the work without the print frame to each other. For example, a display panel including a polarizing plate and the like, a touch panel for operation, a cover panel S2 for protecting the surface, a flat plate-like backlight and a light guide plate for a backlight, ). As a display device, a flat type work to be bonded such as a liquid crystal display, an organic EL display, and the like, widely includes present or future available display devices.

As an example of the variation as described above, Fig. 18 shows the shape of the junction of a pair of panels S11 and S12 of almost the same size without the print frame P. Fig. The adhesive layer R1 was formed on the panel S11 and the adhesive layer guide RG was formed on both the panels S11 and S12. In this way, when the adhesive layer guide RG is formed on both the panel S11 and the panel S12, even if the adhesive layer R1 is formed only on the liquid crystal panel S11, (S12), the adhesive layer R1 can be guided to the four corners of both sides. Thus, it is possible to make the peeling of the product more difficult to occur. 18, the adhesive layer R1 of the panel S11 and the adhesive layer guiding portion RG are separately displayed for the sake of clarity. Actually, the adhesive layer R1 is guided to the adhesive layer guiding portion RG, S12) are integrated with each other.

(8) The pair of works to be bonded to each other may be one or a plurality of stacked layers. A touch panel, a protective panel, or a composite panel may be bonded to a laminate obtained by bonding a display panel, a driver circuit, and a printed substrate. That is, the number of stacked work pieces stacked as the display device member L is not limited to a specific number.

(9) In the above-described embodiment, the adhesive layer R1 is applied in a rectangular shape because it is a rectangular work. However, the adhesive layer R1 may be formed in a circular shape or a polygonal shape in conformity with the shape of the work. The supply position of the stamp adhesive R10 can be appropriately determined so as not to cause a gap between the adhesive layer R1 and the work facing the adhesive layer R1 depending on the shape of the workpiece to be bonded to the adhesive layer R1. For example, in the case of a triangular, pentagonal or hexagonal adhesive layer R1, the stamp adhesive R10 may be supplied to each corner. Further, for example, if the circular adhesive layer R1 is used, the stamp adhesive R10 may be supplied over the entire periphery of the edge portion.

(10) In the above-described embodiment, the inside of the chamber 21 of the bonding apparatus 2 is reduced in pressure and bonding is performed under vacuum, but bonding may be performed under atmosphere. In these cases, since the necessary means are not provided for forming a space for the closed and reduced pressure, the apparatus can be constructed at a lower cost, and the display panel can be manufactured at low cost.

(11) In the second embodiment, the temporary curing is performed. However, the present invention is not limited to the second embodiment, and the temporary curing may be performed in another embodiment. Needless to say, in any of the embodiments, it is not necessary to increase the hardness, but can be suitably performed in consideration of the viscosity of the adhesive to be used.

In the above-described embodiment, the adhesive layer R1 is provided on almost the entire surface of the liquid crystal panel S1 having a small size as shown in Fig. 10 or Fig. 13, When the adhesive layer R1 is provided, it is obvious that the adhesive layer R1 having a size corresponding to the size of the liquid crystal panel S1 to be bonded is provided on the cover panel S2 in a planar shape.

1: Adhesive applying device 2: Adhesion device 3: Curing device 4: Transport device 5: Image pickup device 6: Adhesive layer guide forming device 7: Control device 11: Supporting device 11a: Stage 11b: The present invention relates to a coating apparatus and a coating apparatus for coating a coating film on a substrate by using a coating unit and a coating unit. A camera body, 51b a lens barrel, 61, 62 a dispenser, 100 a manufacturing apparatus for a display device, 200 loader, 300 unloader, S1 liquid crystal panel, S2 cover panel, C contact position, P R: Adhesive layer for stamping, RG: Adhesive layer guiding part, T, T10: Tank for printing, F: Inner frame, S10: Laminate, L:

Claims (14)

A manufacturing apparatus for a display device member in which a pair of works constituting a display device are bonded via an adhesive,
A coating device for coating the adhesive on at least one side of the pair of workpieces to form an adhesive layer,
An adhesive layer guiding portion forming device for forming an adhesive layer guiding portion on at least one side of the pair of works;
And a bonding apparatus for bonding the pair of works by bringing the adhesive layer formed on one work into contact with the other work,
Wherein the adhesive layer guide portion guides at least a part of the edge portion of the adhesive layer formed on one of the workpieces to a position of contact with the other workpiece in the bonding apparatus. The method according to claim 1,
Further comprising an image pickup device for picking up the pair of works,
Wherein the adhesive layer guiding portion forming device forms the adhesive layer guiding portion on at least one of the pair of works based on an image of the pair of works picked up by the imaging device . 3. The method of claim 2,
Further comprising a transfer device for transferring the pair of works between the applying device and the bonding device, wherein the imaging device and the adhesive layer guiding part forming device are provided adjacent to the carrying device,
Wherein the joining apparatus aligns the pair of works based on an image of the pair of works picked up by the image pickup device. The method according to claim 1,
Wherein the adhesive layer guiding portion forming device is provided on the front end of the application device and forms the adhesive layer guiding portion on a work to which the adhesive is applied before forming the adhesive layer. 5. The method of claim 4,
And an irradiating device provided at a rear end of the applying device for irradiating energy to harden the adhesive,
Wherein the irradiating device irradiates the energy to the work where the adhesive layer guiding portion and the adhesive layer are formed. 6. The method according to any one of claims 1 to 5,
Wherein the adhesive layer guide portion is formed of a good adhesive material. 6. The method according to any one of claims 1 to 5,
Wherein the adhesive layer guiding portion is formed of the same adhesive as the adhesive forming the adhesive layer. 6. The method according to any one of claims 1 to 5,
Wherein the adhesive layer guiding portion is formed by an adhesive having a viscosity lower than that of the adhesive forming the adhesive layer, 6. The method according to any one of claims 1 to 5,
Wherein the adhesive layer guide portion forming device includes a transfer device for pressing and transferring an adhesive onto a coated surface. 6. The method according to any one of claims 1 to 5,
Wherein the adhesive layer guiding portion forming device forms the adhesive layer guiding portion by changing the roughness of the work surface. 6. The method according to any one of claims 1 to 5,
Wherein the adhesive layer guide portion forming device forms the adhesive layer guide portion by changing the active state of the work surface. 6. The method according to any one of claims 1 to 5,
Wherein the pair of works has a first work and a second work,
A polygonal inner frame is formed on the surface of the second work,
Wherein the applying device forms the adhesive layer of the same size and the same size as the inner frame on the first work,
In the above bonding apparatus, the pair of works are joined so that the adhesive layer is contained in the inner frame,
Wherein the adhesive layer guiding portion forming device forms an adhesive layer guiding portion on at least a part of an edge portion of the inner frame of the second work and the adhesive layer guiding portion has at least a part of the edge portion of the adhesive layer at the edge portion And the guide member is guided to reach a predetermined position. 13. The method of claim 12,
Wherein the pair of works has a first work and a second work,
A polygonal inner frame is formed on the surface of the second work,
Wherein the application device forms the adhesive layer having a top shape and a same size as the inner frame on the first work and each corner of the adhesive layer has a curved shape after application,
In the above bonding apparatus, the pair of works are joined so that the adhesive layer is contained in the inner frame,
Wherein the adhesive layer guiding portion forming device forms an adhesive layer guiding portion on each corner of the inner frame of the second workpiece, and the adhesive layer guiding portion guiding each corner of the adhesive layer to each corner of the inner frame at the time of bonding Wherein the first and second substrates are bonded to each other. A manufacturing method of a member for a display device in which a pair of works constituting a display device are bonded with an adhesive interposed therebetween,
A coating treatment in which the adhesive is applied to at least one side of the pair of works in the form of a surface to form an adhesive layer,
An adhesive layer guiding portion forming process for forming an adhesive layer guiding portion on at least one of the pair of works;
And a bonding process for bonding the pair of works by bringing the adhesive layer formed on one work into contact with the other work,
Wherein the adhesive layer guide portion guides at least a part of the edge portion of the adhesive layer formed on one of the workpieces to the position of contact with the other workpiece in the bonding process.

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