KR20160033114A - Optical display device manufacturing system - Google Patents

Abstract

The production system of this optical display device is arranged so that the sheet piece FA as the optical member F is bonded to the optical display part P and faces the first surface of the layered product S, And an illuminating device (240) arranged to face the second surface of the laminated body (S) opposite to the first surface and to illuminate the laminated body (S) A light shielding plate 250 disposed between the illuminating device 240 and the laminate S for shielding a part of the optical display component P from light; (220) for cutting a part of the sheet piece (FA) based on a picked-up image of the sheet (S).

Description

[0001] OPTICAL DISPLAY DEVICE MANUFACTURING SYSTEM [0002]

The present invention relates to a production system for an optical display device.

The present application claims priority based on Japanese Patent Application No. 2013-152991 filed on July 23, 2013, the contents of which are incorporated herein by reference.

2. Description of the Related Art Conventionally, in a production system of an optical display device such as a liquid crystal display, a liquid crystal layer is sandwiched between two mother glasses to face each other to form a mother panel, (Called " multi-layer ") is adopted. The mother panel can be divided into a plurality of liquid crystal panels, for example, by scribing a scribe line on the mother glass, and then dividing the scribe line along the scribe line (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. H11-90900

Optical members such as a polarizing film, a retardation film, and a brightness increasing film are bonded to the liquid crystal panel. The optical member is cut into a sheet piece slightly larger than the display area in consideration of the dimensional deviation of the liquid crystal panel and the sheet member, and the deviation (positional deviation) of the sheet member relative to the liquid crystal panel. As a result, an extra area (frame part) is formed in the periphery of the display area, which hinders miniaturization of the device.

Therefore, the present applicant has proposed a method of cutting a sheet piece larger than a liquid crystal panel, bonding the sheet piece to the liquid crystal panel, and cutting the sheet piece in accordance with the external dimensions of the liquid crystal panel. According to this method, since the optical member can be cut in accordance with the external shape of the liquid crystal panel, the frame area of the liquid crystal panel can be reduced, thereby enlarging the display area and downsizing the device.

In this method, it is necessary to detect the outer periphery of the joint surface of the liquid crystal panel over the sheet piece, and to cut the sheet piece along the outer periphery thereof. However, in the case where the liquid crystal panel is manufactured by multi-side wringing, deviation of the end face position between the edge and the upper and lower substrates occurs on the end face of the liquid crystal panel, and when the joining face is viewed over the sheet joining face, The edges of the burrs and the lower substrate (the substrate on the opposite side of the bonding side) are visually recognized together with the bonding surface, and the boundaries thereof may not be recognized. Therefore, there has been a demand for a means for detecting only the bonding surface with high accuracy by excluding the influence of deviation of the end face position between the burrs and the upper and lower substrates when the bonding surface is detected over the sheet piece.

An object of the present invention is to provide an optical display device capable of easily producing a narrow framed optical display device by detecting the outer periphery of the joint surface of the optical display part with high precision and enabling processing of the optical member based on the detected outer periphery And a production system of an optical display device.

(1) A production system of an optical display device according to the present invention comprises an imaging device arranged so as to face a first surface of a laminate, in which a sheet piece as an optical member is bonded to an optical display component, An illuminating device arranged to face the second surface of the laminate opposite to the first surface, the illuminator illuminating the laminate, and a light-shielding portion disposed between the illuminating device and the laminate, And a cutting device for cutting a part of the sheet member based on the image picked up by the stacking body from the image pickup device.

Here, the " inside region of the bonding surface " refers to a region on the inner side (the center side of the region surrounded by the contour) than the contour line of the bonding surface. The term "shielding the inside area of the bonding surface" means a region inside the contour line of the bonding surface and shielding at least a part of the area near the contour line.

(2) In the production system of an optical display device according to (1), the shading plate is configured such that at least a part of an outer edge portion of the optical display component is locally illuminated with light from the illuminating device, Shielding portion.

(3) In the production system of an optical display device according to (1) or (2), the shading plate is configured such that at least a part of an outer edge portion of the optical display component is illuminated with light from the illumination device, Or may be disposed so as to cover a part of the component.

(4) In the optical display device production system described in any one of (1) to (3), the optical display component may have two substrates bonded to each other.

(5) In the production system of an optical display device according to any one of (1) to (4), the imaging device may include a plurality of May have a camera unit.

(6) In the optical display device production system described in any one of (1) to (5), the distance between the outer periphery of the shield plate and the outer periphery of the optical display part may be 0.3 mm or more and 2 mm or less .

(7) The optical display device production system described in any one of (1) to (6) may further comprise a joining device for joining the sheet piece to the optical display component.

According to the present invention, the outer periphery of the joint surface of the optical display component can be detected with high accuracy, and the optical member based on the detected outer periphery can be processed, thereby making it possible to easily produce the narrow- A production system of a display device can be provided.

1 is a schematic sectional view showing a production system of an optical display device.
2 is a schematic diagram showing an optical member sheet.
Fig. 3 is a schematic diagram showing a state in which a layered product is picked up using an image pickup device. Fig.
4 is a schematic cross-sectional view showing a state in which the outer periphery of the liquid-crystal panel and the joining face of the sheet piece is picked up from the side where the sheet piece is joined.
5 is a diagram showing an example of a method of cutting a sheet piece along an outer periphery of a joining surface based on an image of a laminate picked up by an image pickup device.
6 is a view showing an image of the corner portion of the laminate when the edges of the upper and lower substrates coincide with each other.

Hereinafter, a production system of an optical display device according to the present embodiment will be described with reference to Figs. 1 to 6. Fig.

The optical display device is obtained by bonding an optical member to at least one surface of an optical display component and, if necessary, mounting the electronic component on the terminal portion of the optical display component. In the present embodiment, a liquid crystal panel is exemplified as an optical display component, and a polarizing plate is exemplified as an optical member. However, the optical display component and the optical member are not limited thereto. As the optical display part, in addition to the liquid crystal panel, an organic EL panel or the like can be used. As the optical member, in addition to the polarizing plate, a retardation film or a brightness enhancement film can be used.

1 is a schematic cross-sectional view showing a main configuration of a production system 100 (hereinafter, production system 100) of an optical display device. The production system 100 includes a joining portion 10 for joining a sheet piece FA to a liquid crystal panel (optical display component) P conveyed in a line and a joining portion 10 for joining the sheet member FA to the optical member F), and a cut portion 20 for manufacturing an optical member joined body having the optical member F and the liquid crystal panel P.

(copula)

The joining portion 10 includes a conveying device 11 for conveying the optical member sheet F1 in the shape of a strip in the longitudinal direction of the optical member sheet F1 and a sheet member FA from the optical member sheet F1 A cutting device 12 and a bonding device 13 for bonding the sheet piece FA to the upper surface of the liquid crystal panel P. [

2 is a schematic diagram showing the optical member sheet F1. 2, the optical member sheet F1 includes a strip-like optical member fabric F2 which is obtained by cutting the sheet member FA into a unit length by joining to the liquid crystal panel P, And a separator sheet F3 laminated on the separator sheet F2. The separator sheet F3 is used as a carrier for transporting the optical member distal end F2.

An adhesive layer F4 is formed between the optical member distal end F2 and the separator sheet F3. The optical member fabric F2 is cut along the cut line C formed over the entire width in the width direction of the optical member sheet F1 together with the adhesive layer F4 in a unit length (unit of sheet FA) And becomes a sheet piece FA. The sheet piece FA is peeled off from the separator sheet F3 and joined to the upper surface of the liquid crystal panel P as will be described later.

Returning to Fig. 1, the carrying apparatus 11 holds the far-end roll R1 wound with the belt-shaped optical member sheet F1 and holds the optical member sheet F1 on the optical member sheet F1. And a winding part 112 for holding a separator roll R2 for winding up a separator sheet F3 which is separated from the sheet piece FA and is wound therearound.

Although not shown, the conveying device 11 has a plurality of guide rollers for winding the optical member sheet F1 along a predetermined conveying path. The optical member sheet F1 has a width wider than the substrate on the side where the sheet pieces of the liquid crystal panel P are joined in the horizontal direction (sheet width direction) perpendicular to the conveying direction of the optical member sheet F1.

The winding portion 111 and the winding portion 112 are driven, for example, in synchronization with each other. Thereby, the operation of the take-up unit 111 for feeding out the optical member sheet F1 in the carrying direction and the operation of the take-up unit 112 for taking up the separator sheet F3 are synchronized, Thereby suppressing the relaxation of the separator sheet F3. The winding unit 111 and the winding unit 112 carry the optical member sheet F1 wound from the far-end roll R1 toward the optical member fabric F2 side toward the cutting device 12 side.

The cutting device 12 is disposed facing the optical member distal end F2 in the process of conveying the optical member sheet F1. The cutting device 12 is provided with, for example, a circular cutting blade, and is configured to be movable in the cutting direction of the set optical member sheet F1.

The cutting apparatus 12 is configured to cut the optical member sheet F1 along the entire width in the sheet width direction of the optical member sheet F1 every time the optical member sheet F1 is fed out by a predetermined unit length, The member fabric F2 is cut. A cut line C extending over the entire width of the optical member distal end F2 in the sheet width direction is formed in the optical member sheet F1 after cutting. The range defined by the cutting line C is the sheet piece FA and the cutting device 12 forms the sheet piece FA on the separator sheet F3. The length of the sheet piece FA in the conveying direction of the optical member sheet F1 is longer than the length of the substrate on the side where the sheet piece of the liquid crystal panel P is joined.

In the following description, it is not necessary to cut the entire optical member sheet F1 in the thickness direction, but to cut the optical member distal end F2 while at least a part of the separator sheet F3 is connected, May be referred to as "

The cutting apparatus 12 is provided with a separator sheet F3 having a predetermined thickness in order to prevent the optical member sheet F1 (separator sheet F3) from being broken due to the tension acting during conveyance of the optical member sheet F1. , And the half cut is performed to the vicinity of the interface between the adhesive layer F4 and the separator sheet F3. Further, instead of the cutting edge, it may be burned off by using an apparatus for emitting laser light.

The size and shape of the sheet piece FA formed by the cutting device 12 can be arbitrarily set in accordance with the shape of the optical member, the setting direction of the optical axis in the optical member, and the like. In the present embodiment, the optical member sheet F1 is half-cut in the direction intersecting the longitudinal direction of the optical member sheet F1, and the cut line C is formed at a predetermined interval in the optical member sheet F1 , And a sheet piece (FA).

The joining apparatus 13 includes a peeling section 131 for separating the sheet member FA from the separator sheet F3 by winding the optical member sheet F1 at an acute angle and holding and holding the sheet member FA A bonding head 132 which carries and joins the liquid crystal panel P onto the liquid crystal panel P and a mounting table 133 on which the liquid crystal panel P is mounted (mounted) to join the liquid crystal panel P and the sheet piece FA ).

The peeling section 131 is located below the optical member sheet F1 which is conveyed substantially horizontally downward on the side of the separator sheet F3 in Fig. 1, and at least the whole of the optical member sheet F1 in the sheet width direction Lt; / RTI > The optical member sheet F1 after the half cut is wound around the peeling portion 131 so that the separator sheet F3 side is in contact with the peeled portion.

The tip portion 131a of the peeling portion 131 is formed at an acute angle when viewed in section. When the optical member sheet F1 is folded back at an acute angle from the front end portion 131a of the peeling portion 131, the sheet member FA is peeled off from the separator sheet F3) to be peeled off. The adhesive layer F4 formed between the sheet piece FA and the separator sheet F3 is peeled from the separator sheet F3 together with the sheet piece FA when the sheet piece FA is peeled off. Therefore, in the sheet piece FA to be peeled off from the separator sheet F3, the adhesive layer F4 is disposed on the lower surface.

The joining head 132 has a holding surface 132a which is parallel to the sheet width direction and convex downward and which has an arcuate shape. The holding surface 132a has a weaker adhesive force than, for example, the adhesive layer F4 of the sheet piece FA, and it is possible to repeat adhesion and peeling of the sheet piece FA.

The bonding head 132 has a driving device not shown and is capable of ascending and descending a predetermined amount above the peeling portion 131 (the front end portion 131a) and above the loading table 133 described later, So that it can be properly moved between the portion 131 and the stage 133. Further, the bonding head 132 is capable of parallel movement for correcting the position in the horizontal direction and rotation (pivoting) in the normal and reverse directions around the normal line of the mounting surface.

The joining head 132 is configured to be able to tilt so as to follow the curvature of the holding surface 132a about an axis along the sheet width direction of the optical member sheet F1. The tilting of the bonding head 132 is appropriately performed when the sheet piece FA is adhered to and adhered to the liquid crystal panel P by bonding and holding the sheet piece FA.

The loading table 133 is configured to load the liquid crystal panel P and move and rotate in parallel to correct the position in the horizontal direction.

The joining portion 10 includes a first detection camera 141 disposed below the front end portion 131a of the peeling portion 131 and detecting the leading end of the sheet piece FA on the downstream side of sheet conveyance, A second detection camera 142 for picking up a sheet piece FA adhered and held on the surface 132a and a third detection camera 143 for picking up a liquid crystal panel P on the stage 133. [ It is also possible to use a sensor in place of each of the detection cameras 141 to 143.

Such a joint 10 is entirely driven as follows.

When the optical member sheet F1 is fed out, for example, at the time when the first detection camera 141 detects the downstream end of the sheet piece FA, the conveying device 11 is once stopped and the cutting device 12 Cuts the optical member sheet F1 halfway. That is, the distance between the detection position (the optical axis extension position of the first detection camera 141) by the first detection camera 141 and the cut position (the cutting edge advance / retreat position of the cutting device 12) The distance along the sheet conveyance path corresponds to the length of the sheet piece FA.

The cutting device 12 is movable along the sheet conveying path and changes the distance along the sheet conveying path between the detection position by the first detection camera 141 and the cut position by the cutting device 12 . For example, when the length of the prepared sheet piece FA is different from the standard of the sheet piece FA set in advance, the deviation is corrected by the movement of the cutting device 12, (FA) can be formed. Further, by the movement of the cutting device 12, the sheet pieces FA having different lengths can be formed.

At the same time, the bonding head 132 is peeled off from the peeling section 131 in a state inclined so that the one end side 132x of the holding surface 132a is downward (indicated by the symbol? In FIG. 1) The end portion 132x of the holding surface 132a is pressed against the leading end 131a of the holding surface 132a from above and the downstream end of the sheet piece FA at the leading end 131a is bonded to the holding surface 132a . Thereafter, the joining head 132 is disconnected from the drive unit to make the joining head 132 tiltable.

In this state, when the winding unit 111 and the winding unit 112 are driven and the sheet piece FA is fed out, the bonding head 132 is moved in such a manner that the other end side 132y of the holding surface 132a moves downward (Indicated by a symbol? In a state of being tilted to the left in Fig. 1) and manually tilted. As a result, the entire sheet piece FA is adhered to the holding surface 132a.

The joint head 132 holding the sheet piece FA moves to the upper side of the stacking table 133. [ The sheet piece FA held on the joint head 132 is picked up by the second detection camera 142 when the sheet piece FA moves upward from the peeling portion 131 to above the stacking table 133. [ The picked-up image data is sent to a control device (not shown), and the captured image data is stored in the holding posture (the position in the horizontal direction, the holding surface 132a ) Is detected.

The liquid crystal panel P mounted on the stage 133 is picked up by the third detection camera 143. [ The captured image data is sent to a control device (not shown), and the captured image data is sent to a controller (not shown), and the position of the liquid crystal panel P on the stage 133 (the position in the horizontal direction, Is detected.

The joining head 132 and the stage 133 adjust the relative positions of the sheet piece FA and the liquid crystal panel P based on the posture of the sheet piece FA and the liquid crystal panel P detected respectively . On the stage 133, the joining head 132 is actively tilted by, for example, the operation of a driving device, and on the upper surface of the liquid crystal panel P mounted on the stage 133, The sheet member FA is pressed against the curved portion of the sheet member 132a and firmly bonded.

Thereby, the laminate S in which the sheet member FA as the optical member and the liquid crystal panel P as the optical display component are bonded is formed. The joining deviation of the sheet piece FA can be suppressed and the accuracy of the sheet piece FA with respect to the liquid crystal panel P in the optical axis direction can be improved by joining the sheet piece FA with the liquid crystal panel P, And the uniformity and contrast of the optical display device are enhanced.

When the cutting device 12 half cuts the optical member sheet F1, the first detection camera 141 also detects a defect mark displayed on the optical member front end F2 of the optical member sheet F1 You can. The defect mark is formed by using an inkjet apparatus or the like on the optical member fabric F2 of the defect spot found in the optical member sheet F1 at the time of manufacturing the fabric roll R1. The sheet piece FA on which the defect mark is detected is adhered to the bonding head 132 and then moved to a separately disposed saddle position without being bonded to the liquid crystal panel P to be overlaid on the waste sheet or the like . Further, when the defect mark is detected, the cutting device 12 may be moved and cut shorter than the sheet piece FA that can be bonded to the liquid crystal panel P, and the portion including the defect mark may be cut and folded .

(Cutting portion)

The cut portion 20 includes an image pickup device 210 for picking up an image of the layered product S and a sheet member FA provided in the layered product S to a portion opposed to the display region of the liquid crystal panel P A cutting device 220 for separating the optical member F into an excess portion FX on the outer side of the optical member F and a cutting device 220 on the basis of an image And a control unit 230 for controlling the control unit 220. An illuminating device 240 for illuminating the laminate S from the opposite side of the image pickup device 210 with the laminate S therebetween is disposed between the illuminator 240 and the laminate S And a light shielding plate 250 for shielding a portion of the liquid crystal panel P (an area inside the bonding surface between the substrate on the side where the sheet member FA of the liquid crystal panel P is bonded and the sheet member FA) . In other words, the image sensing device 210 is disposed so as to face the first surface S1 on which the sheet piece FA of the layered product S is bonded, And the second surface S2 on the opposite side to the first surface S1. The image pickup device 210 is disposed toward the first surface S1 of the stacked body S at a position adjacent to the first surface S1 of the stacked body S, (S1) of the stacked body (S) at a position adjacent to the second face (S2) of the stacked body (S).

Here, the " inside region of the bonding surface " refers to a region on the inner side (the center side of the region surrounded by the contour) than the contour line of the bonding surface. The term "shielding the inside area of the bonding surface" means a region inside the contour line of the bonding surface and shielding at least a part of the area near the contour line.

Figs. 3 to 5 are views for explaining the operation of the cutting section 20. Fig.

3 is a schematic diagram showing a state in which the stacked body S is picked up by using the image pickup apparatus 210. Fig. 3, a plurality of image pickup devices 210 are used to pick up the periphery (a part indicated by a thick line in the figure) of the corner portion of the liquid crystal panel P in the stacked body S (Captured). The image capture device 210 has, for example, a plurality of camera units 210 disposed at positions corresponding to a plurality of corner portions of the liquid crystal panel P, respectively. In the example of Fig. 3, four camera units 210 (image pickup devices) are arranged at positions corresponding to the four corners of the counter substrate P1 having a rectangular shape.

The layered product S has a sheet piece FA bonded to the liquid crystal panel P and the liquid crystal panel P. The liquid crystal panel P has a liquid crystal layer sandwiched between the opposing substrate P1 and the element substrate P2. The area of the liquid crystal panel P when viewed from the plane of the element substrate P2 is smaller than that of the element substrate P2 and when the two are overlapped, the one end side of the element substrate P2 is exposed when viewed from the plane have. A terminal portion is provided in a region P3 where the element substrate P2 is exposed. The sheet piece FA is bonded to the surface of the counter substrate P1. In the layered product S, the sheet piece FA has a rectangular shape in plan view and has an area seen in a plane wider than the counter substrate P1.

An image pickup device 210 is used for this stacked body S to pick up an image pickup area AR (see Fig. 5) including a corner portion of the counter substrate P1. At this time, the illuminator 240 shown in Fig. 1 is used to illuminate the laminate S by irradiating the light L from the opposite side of the imaging device 210 with the laminate S therebetween. Thus, compared with the case where the stacked body S is illuminated from the same side as the image pickup device 210, it is possible to suppress the reflection due to reflected light generated in the sheet piece FA. As the illumination device 240, a blue LED is used.

The image data of the image picked up by the image pickup device 210 is inputted to the control device 230, and the next process (image processing, calculation) is performed.

4 shows a state in which the outer periphery ED of the joining surface SA of the liquid crystal panel P and the sheet piece FA on the side where the sheet piece FA is joined And FIG. Here, the " bonding surface " refers to a surface facing the sheet member FA of the liquid crystal panel P, and the " outer circumferential surface of the bonding surface " And the outer periphery of the substrate on the side where the sheet member FA is bonded (the opposing substrate P1 in Fig. 4). In other words, on the side of the first surface S1 of the layered product S, the sheet piece FA is bonded on the bonding surface SA.

The liquid crystal panel P of the present embodiment is manufactured by multi-sided coating. Thereby, there may occur a displacement of the end face position between the burrs and the upper and lower substrates P1 and P2 in the vicinity of the corner K of the liquid crystal panel P. The outer periphery of the opposing substrate P1 and the outer periphery of the opposing substrate P1 are located outside the outer periphery of the opposing substrate P1 as shown in Fig. Is detected by the imaging device 210. [ As the element substrate P1 or P2, for example, a substrate having a light-transmitting property is used.

In the case of detecting the outer edge (ED) of the joining surface SA of the opposing substrate P1 and the sheet piece FA from the side where the sheet member FA of the layered product S is bonded, To the upper surface of the sheet piece FA. Thereby, the outer periphery of the opposing substrate P1 can be more clearly imaged than the outer periphery of the element substrate P2, and the detection of the outer periphery (ED) of the joining surface SA is facilitated. However, when the liquid crystal panel P is picked up over the sheet piece FA, the outer peripheral edge of the counter substrate P1 may become slightly blurred, and the outer peripheral edge of the element substrate P2 other than the originally- They may be visually recognized together with the joint surface SA, so that their boundaries may not be recognized.

Therefore, in the cutting portion 20 of the present embodiment, the area inside the joining surface SA of the opposing substrate P1 and the sheet piece FA is shielded between the illuminator 240 and the laminate S The light shielding plate 250 is provided so that the light L is irradiated only in the vicinity of the outer periphery ED of the bonding surface SA. According to this configuration, only the light L projected substantially vertically from immediately below the outer periphery of the joint surface SA is incident on the image pickup device 210. [ Thereby, the light L contributing to the image pickup can be approximated to the straight-line light incident perpendicularly to the stacked body S, and contributes to enhance the contrast of the image of the outer periphery of the counter substrate P1.

The reason why the outer periphery of the counter substrate P1 is blurred is not clear. However, according to the study of the present inventor, it is supposed that the light L incident obliquely on the laminate S influences the blurring of the outer periphery. That is, a shadow of the end face is generated by the light L incident obliquely with respect to the end face of the counter substrate P1, and the shadow thereof is reflected by the sheet member FA, such as reflection, refraction, , It is assumed that it seemed to be blurred. Therefore, in the cutting portion 20 of the present embodiment, the light L incident on the end face of the counter substrate P1 is cut by the light shielding plate 250, thereby suppressing the occurrence of the shadow of the end face . Thus, the outer peripheral edge of the counter substrate P1 is picked up as a clear line, and the outer peripheral edge (ED) of the bonded surface SA can be detected with high accuracy.

It is preferable that the light shielding area BA shielded by the light shielding plate 250 is as close as possible to the outer periphery of the counter substrate P1 in the image sensing area of the image sensing device 210. [ In one example, the light shielding plate 250 can be arranged so as to shield the entire range of the imaging region except for the vicinity of the outer periphery ED of the bonding surface SA (slit illumination along the outer periphery ED, light]. In another example, the shield plate 250 can be arranged to shield only the inside area of the outer periphery ED of the bonding surface SA. The light shield plate 250 may be arranged so that the outer circumferential edge (ED) of the joint surface SA is curled. In other words, the light shielding plate 250 is arranged so that at least a part of the outer edge portion of the liquid crystal panel P is illuminated locally with the light from the illuminating device 240, And is arranged to shade a part thereof. The light blocking plate 250 is disposed so as to cover a part of the liquid crystal panel P such that only at least a part of the outer edge portion of the liquid crystal panel P is illuminated by the light from the lighting device 240. In other words, In the case of the present embodiment, the light shielding plate 250 is formed as a rectangular plate (for example, an aluminum plate) slightly smaller than the counter substrate P1. The distance d1 between the outer periphery of the opposing substrate P1 and the outer periphery of the element substrate P2 is 0.1 mm and the distance d2 between the outer periphery of the element substrate P2 and the outer periphery of the light shield plate 250 is For example, 1 mm, and the distance d3 between the outer periphery of the shield plate 250 and the outer periphery of the counter substrate P1 is, for example, 0.9 mm.

The distance d3 between the outer periphery of the shield plate 50 and the outer periphery of the counter substrate P1 is preferably 0.3 mm or more and 2 mm or less, for example. In this example, if d3 is larger than 2 mm, the directivity of the light L can not be sufficiently increased and the detection accuracy of the outer periphery (ED) of the bonding surface SA is lowered. In this example, if d3 is smaller than 0.3 mm, the light amount of the light L illuminating the outer periphery ED of the bonding surface SA becomes small, and a dark image is obtained. Therefore, in this case also, the accuracy of detection of the outer circumferential edge (ED) of the joint surface SA is reduced. In this embodiment, by setting d3 to 0.3 mm or more and 2 mm or less, the outer peripheral edge of the counter substrate P1 can be picked up as a clear line, and the detection accuracy of the outer edge (ED) of the contact surface SA is enhanced. The above distances are appropriately set according to the type, shape (thickness, etc.) of the substrate. The above values are examples, and the present invention is not limited to this.

4 illustrates a case where a deviation occurs in the position of the outer periphery of the upper and lower substrates P1 and P2, but the same phenomenon may occur even when the positions of the outer periphery of the upper and lower substrates coincide with each other . In this case, the directivity of the light L incident on the outer periphery ED of the bonding surface SA can be obtained by shielding the inner area (the area other than the outer edge) of the bonding surface SA with the shielding plate 250 And the contour of the outer circumferential edge (ED) of the bonding surface (SA) can be suppressed from becoming blurred.

6 (a) and 6 (b) show an image of the corner portion of the laminate when the edges of the upper and lower substrates coincide with each other. 6 (a) is an image when a light shielding plate is not provided between the lighting device and the laminate, and Fig. 6 (b) is an image when a light shielding plate is provided between the lighting device and the laminate. In the example of Fig. 6 (a), the outline of the counter substrate is blurred as if it is blurred. In the example of Fig. 6 (b), the outline of the counter substrate is recognized as a sharp thin line. Therefore, by providing a shield plate between the illuminator and the laminate, the detection accuracy of the outer periphery of the bonding surface is enhanced.

5 is a diagram showing an example of a method of cutting the sheet piece FA along the outer periphery of the joint surface on the basis of the image of the layered product S picked up by the image pickup device 210. Fig.

First, as shown in Fig. 5A, the coordinates of a plurality of points D overlapping the outline (side) of the counter substrate are detected from the image data in the image pickup area AR of each image pickup apparatus . The detection of the coordinates of the point D is performed on each of the two sides sandwiching the corner portion CX of the counter substrate. It is preferable to detect the coordinates of a plurality of points overlapping the side on each side. The coordinate axes of the coordinates to be detected are set at, for example, a predetermined position in the image sensing area AR as the origin, and the right direction of the image is set as the + X direction and the down direction of the image is set as the + Y direction.

Next, as shown in Fig. 5 (b), a straight line corresponding to the side overlapping the point D is approximated from the coordinates of the plurality of points (D). As an approximation, a generally known statistical method can be used. For example, a method of approximating a regression line (approximate straight line) using a least squares method can be mentioned. In this case, the deviation of the coordinates of the point D near the corner CX becomes large due to the influence of the burr formed on the corner CX, which may adversely affect the calculation result of the approximate straight line. In this case, the approximate straight line may be obtained by using the remaining points D except for the point D near the corner CX.

Next, as shown in Fig. 5 (c), the approximate outline OL of the counter substrate is obtained based on the approximated straight line obtained for each side. In the present embodiment, this approximate outline OL is approximated as the outer periphery of the counter substrate (the outer periphery of the bonding surface). The sheet piece FA is cut along the approximate outline OL (outer periphery of the joint surface) by the cutting device 220 shown in Fig. 1, so that the sheet piece FA can be separated from the opposing portion The optical member F and the surplus portion FX outside the optical member F are separated from each other.

As described above, the sheet piece FA can be cut substantially along the outer periphery ED of the joint surface SA shown in Fig. 4, (F) can be bonded. Therefore, the production system 100 of the present embodiment eliminates the influence of deviations in the end face position between the burrs and the upper and lower substrates P1 and P2 and prevents the outer periphery of the joining face SA of the liquid crystal panel P ED can be detected with high accuracy and the optical member F can be processed in conformity with the outer periphery ED of the joining surface SA so that the narrow framed optical display device can be easily produced.

In this embodiment, the sheet piece FA is cut along the approximate outline OL. However, the present invention is not limited to this. For example, it may be a region inside the approximate outline OL, The sheet piece FA may be cut at a position overlapping a frame portion (a portion located outside the display region) of the sheet member FA. In this case, in the controller 230, a shape smaller than a shape drawn by the approximate outline OL by a predetermined size is calculated as an actual cut portion based on the calculated approximate outline OL, The cutting device 220 may be controlled so as to cut the sheet piece FA along the actual cut portion.

That is to say, "cutting the sheet piece FA along the outer periphery ED of the bonding surface SA" means that the sheet piece FA is cut along the outer periphery ED of the detected reality based on the picked- It is also possible to cut the sheet piece FA along the approximate contour line OL obtained from the outer circumferential edge ED of the actual area or to cut the sheet piece FA on the basis of the approximate contour line OL And cutting the sheet piece FA along the cutting line.

While the preferred embodiments of the present invention have been described with reference to the accompanying drawings, it is needless to say that the present invention is not limited to these examples. Various shapes, combinations, and the like of each component member shown in the above-described example are merely examples, and can be variously changed based on a design requirement or the like without departing from the gist of the present invention.

As described above, the production system 100 of the optical display device according to the present embodiment is a production system 100 of an optical display device formed by bonding an optical member F to a liquid crystal panel P, An image of the layered product S in which the sheet piece FA having a wider width than the surface is bonded to the surface of the substrate of the layered product S is peeled from the surface side of the layered product S An illumination device 240 for illuminating the stacked body S from the opposite side of the image pickup device 210 with the stacked body S therebetween; A light shielding plate 250 disposed between the substrate S and the laminate S for shielding an area inside the joint surface SA between the substrate and the sheet piece FA; On the basis of the image of the layered product (S), the sheet piece (FA) The sheet member FA is cut along the edge ED so as to separate the sheet member FA into the optical member F as a portion facing the substrate and the surplus portion FX outside the optical member F And a device (12). Further, in the production system 100 of the optical display device according to the present embodiment, the liquid crystal panel P may be formed by bonding two substrates. In the optical display device production system 100 according to the present embodiment, the image pickup device 210 may be disposed at positions corresponding to the four corners of the substrate having a rectangular shape. In the production system 100 of the optical display device according to the present embodiment, the distance between the outer periphery (ED) of the shield plate 250 and the outer periphery (ED) of the substrate may be 0.3 mm or more and 2 mm or less . The production system 100 of the optical display device according to the present embodiment is characterized in that the sheet piece FA wider than the surface is bonded to the surface of the substrate of the liquid crystal panel P to form the liquid crystal panel P And a lamination body S having the sheet piece FA.

10:
11:
12: Cutting device
13:
20:
100: Production system
210:
220: Cutting device
230: Control device
240: Lighting device
250: Shading plate
AR: imaging region
BA: Shading area
d1: Distance
d2: Distance
d3: Distance
D: Point
ED: Outer periphery of bonding surface
F: optical member
CX: corner portion
FA: sheet
FX: excess part
K: corner portion
L: Light
OL: Approximate contour
P: Liquid crystal panel (optical display part)
P1: opposing substrate
P2: element substrate
S: laminate
SA: Joint face

Claims (7)

A production system for an optical display device,
An image pickup device arranged so as to face a first surface of the laminate, wherein the sheet piece as an optical member is bonded to an optical display component, and which picks up an image of the laminate;
A lighting device arranged to face a second surface of the laminate opposite to the first surface, the lighting device illuminating the laminate,
A light shielding plate disposed between the illuminating device and the laminate and shielding a part of the optical display component;
And a cutting device for cutting a part of the sheet piece based on the picked-up image of the stacked body from the image pick-up device. The method according to claim 1,
Wherein the shielding plate shields a part of the optical display part such that at least a part of the outer edge of the optical display part is locally illuminated with light from the illuminating device. 3. The method according to claim 1 or 2,
Wherein the light shielding plate is arranged to cover a part of the optical display part such that at least a part of the outer edge of the optical display part is illuminated with light from the illuminating device. 4. The method according to any one of claims 1 to 3,
Wherein the optical display component has two substrates bonded to each other. 5. The method according to any one of claims 1 to 4,
Wherein the imaging device has a plurality of camera units arranged at positions corresponding to a plurality of corner portions of the optical display component. 6. The method according to any one of claims 1 to 5,
Wherein the distance between the outer periphery of the light shielding plate and the outer periphery of the optical display part is 0.3 mm or more and 2 mm or less. 7. The method according to any one of claims 1 to 6,
And a joining device for joining the sheet piece to the optical display component.

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