WO2014167875A1 - Laser machining device and system for producing optical display device - Google Patents

Abstract

The present invention provides a laser machining device, which is capable of effectively limiting the adhesion of fumes on the product surface without affecting product machining precision, and a system for producing optical display devices. The laser machining device is provided with a suction unit (30) that has a suction opening (37) along the entire length of the cutting line (SX) of an optical member sheet (FX) in an optical display component (PX) near the cutting line.

Description

Laser processing apparatus and optical display device production system

The present invention relates to a laser processing apparatus and an optical display device production system.
This application claims priority based on Japanese Patent Application No. 2013-80846 filed on April 8, 2013 and Japanese Patent Application No. 2013-104400 filed on May 16, 2013, The contents are incorporated herein.

In Patent Document 1, a decomposition product (fume) generated from a laser irradiation portion at the time of laser processing of a product is sucked and removed by a suction device in which a suction port is disposed in the vicinity of the laser irradiation portion. Techniques for reducing adhesion are disclosed.
In Patent Document 2, in a method of cutting an optical film with a separator into a predetermined length and pasting it to a product panel, the laser optical axis is tilted from the front to the rear in the laser traveling direction and cut when the film is laser cut. An air nozzle that blows hot air toward the part and a smoke collection duct that removes gas generated from the cutting part conveyed by the hot air are integrated with the laser irradiation device, so that the fume on the film surface Techniques for reducing adhesion are disclosed.

Japanese Unexamined Patent Publication No. 2008-284572 Japanese Patent No. 4361103

In the former configuration, fume adherence to the product can be suppressed, but it is difficult to completely remove it, and foreign matter adhering to the product surface becomes a problem as product standards become strict. . In addition, there is a possibility of a decrease in yield due to line contamination due to minute foreign substances adhering to the product surface.
In the latter configuration, it is possible to prevent fume from adhering to the optical film by tilting the laser irradiation direction, but the cut surface of the film is likely to be tapered due to the tilt of the optical axis, which may affect product processing accuracy. There is sex. Moreover, it may become NG on a product specification.

An aspect of the present invention has been made in view of the above circumstances, and provides a laser processing apparatus and an optical display device production system capable of effectively suppressing fume adhesion to a product surface without affecting product processing accuracy. The purpose is to do.

As a means for solving the above problems, a laser processing apparatus and an optical display device production system according to an aspect of the present invention employ the following configurations.
(1) One embodiment of the present invention is a laser processing apparatus that irradiates a processing position of a workpiece with laser light to perform processing, and opens a suction port over the entire length of the processing position in the vicinity of the processing position. A suction device is provided.

According to the above configuration, it is possible to suck the fumes generated by laser processing without omission over the entire length of the processing position, while ensuring the product processing accuracy by eliminating the inclination of the laser beam and the like. As a result, it is possible to prevent fume from adhering to the product surface and to prevent line contamination due to fume adhering to the product.

(2) In the aspect of (1), the processing position is provided endlessly on the outer periphery of the specific area of the workpiece, and the suction device is provided so as to surround the entire periphery of the specific area. Also good.
In this case, the fumes can be removed by suction without leakage over the entire circumference of the specific region.
(3) In the above aspect (1) or (2), the suction device may be capable of moving forward and backward with respect to the processing position.
In this case, laser processing of workpieces having different processing positions can be easily handled.

(4) In the aspect according to any one of (1) to (3), the suction device includes a blowout port that blows air toward a product surface between the processing position and the suction port. Also good.
In this case, fume adhesion to the product surface between the processing position and the suction port can be suppressed.
(5) In the above aspect (4), the suction device may blow out warm air from the outlet.
In this case, fume adhesion to the product surface between the cutting line and the suction port can be more effectively suppressed.

(6) Another aspect of the present invention is an optical display device production system configured by bonding an optical member to an optical display component, and the optical display component is larger than a display area of the optical display component. From the optical member sheet, a bonding device that bonds the optical member sheet to form a bonded body, and separates the facing portion of the bonding member from the display area of the optical member sheet and the surplus portion outside the facing portion. A cutting device for forming the optical member having a size corresponding to the display area, and the cutting device is directed to a cutting portion between the facing portion and the surplus portion of the optical member sheet in the bonded body. A laser beam irradiation device that irradiates a laser beam for cutting processing, and a suction device that opens a suction port over the entire length of the cutting portion in the vicinity of the cutting portion.

According to the said structure, after bonding the optical member sheet | seat larger than the said display area to an optical display component, the optical member of the size corresponding to a display area is cut | disconnected of an optical display component by cutting off the excess part of the said optical member sheet | seat. It can be formed with high accuracy on the surface, and the frame portion outside the display area can be narrowed to enlarge the display area and downsize the device.
In addition, cutting using laser light is more accurate than cutting using a cutting blade, and the frame portion around the display area can be narrower than when using a cutting blade.
In addition, the effective area of the optical member sheet (optical member) to be left on the optical display component without causing a taper angle (an angle with respect to the direction orthogonal to the bonding surface) due to the inclination of the laser beam at the cut end of the optical member sheet. Can contribute to further narrowing the frame of the device.
Further, the fumes generated by the laser processing can be sucked without leakage over the entire length of the processing position, so that the fume can be prevented from adhering to the product surface, and line contamination due to the fumes adhering to the product can be prevented.

In addition, the “part facing the display area” in the above configuration is an area that is not less than the size of the display area and not more than the size of the outer shape (contour shape in plan view) of the optical display component, and the electrical component mounting portion. The area where functional parts such as are avoided is shown. That is, the said structure includes the case where the surplus part is laser-cut along the outer periphery of an optical display component.
In addition, the “size corresponding to the display area” in the above configuration is a size not less than the size of the display area and not more than the size of the outer shape (contour shape in plan view) of the optical display component, and It refers to a size that avoids a functional part such as an electric part mounting part in an optical display part.

(7) In the aspect of the above (6), the bonded body includes a detection unit that detects an outer peripheral edge of a bonding surface between the optical member sheet and the optical display component, and the cutting portion is connected to the outer peripheral edge. You may set along.

The “bonding surface between the optical member sheet and the optical display component” in the above configuration refers to a surface facing the optical member sheet of the optical display component, and specifically, “the outer peripheral edge of the bonding surface” In the optical display component, the outer peripheral edge of the substrate on which the optical member sheet is bonded is indicated.

According to the above-described configuration, it is possible to reliably set the cutting portion based on the shape of the optical display component, and to produce an optical display device that can effectively narrow the frame for various sizes of optical display components. It can be a system.

According to the aspect of the present invention, it is possible to provide a laser processing apparatus and an optical display device production system that can effectively suppress fume adhesion to the product surface without affecting the product processing accuracy.

It is a schematic block diagram of the film bonding system of the optical display device in embodiment of this invention. It is a perspective view of the 2nd bonding apparatus periphery of a film bonding system. It is sectional drawing of the 1st bonding sheet | seat in a film bonding system. It is sectional drawing of the 2nd bonding sheet | seat in the 2nd cutting device periphery in a film bonding system. It is a top view of the 3rd bonding sheet | seat in the periphery of the 3rd cutting device in a film bonding system. FIG. 6 is a cross-sectional view taken along line AA in FIG. 5. It is sectional drawing of the double-sided bonding panel which passed through the film bonding system. It is a top view of the suction device with which a 2nd cutting device is provided. It is a B arrow view of FIG. It is a top view of the state which reduced the range which a suction device encloses. It is D arrow line view of FIG. It is sectional drawing of the dust collection duct and optical display component of a suction device. It is a principal part enlarged view of FIG. It is a top view of the modification of a suction device. It is a perspective view of the connection bracket of a modification. It is a schematic diagram of the 1st detection means which detects the outer periphery of the bonding surface. It is a schematic diagram which shows the modification of the 1st detection means which detects the outer periphery of the bonding surface. It is a top view which shows the position which detects the outer periphery of the bonding surface. It is a schematic diagram of the 2nd detection means which detects the outer periphery of the bonding surface.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. This embodiment demonstrates the film bonding system which comprises the one part as a production system of an optical display device. In each figure, an XYZ orthogonal coordinate system is set. The X direction indicates the width direction of the optical display component (liquid crystal panel). The Y direction indicates the conveyance direction of the optical display component. The Z direction indicates a direction orthogonal to the X direction and the Y direction.

FIG. 1 shows a schematic configuration of a film bonding system (an optical display device production system) 1 according to the present embodiment. The film bonding system 1 bonds a film-shaped optical member such as a polarizing film, a retardation film, and a brightness enhancement film to a panel-shaped optical display component such as a liquid crystal panel or an organic EL panel. The film bonding system 1 manufactures an optical member bonding body including an optical display component and an optical member. In the film bonding system 1, the liquid crystal panel P is used as an optical display component. Each part of the film bonding system 1 is comprehensively controlled by a control device 20 as an electronic control device.

The film bonding system 1 sequentially performs a predetermined process on the liquid crystal panel P while transporting the liquid crystal panel P from the start position to the end position of the bonding process using, for example, a driving roller conveyor 5. The liquid crystal panel P is conveyed on the roller conveyor 5 with its front and back surfaces being horizontal.
In the drawing, the left side shows the upstream side in the transport direction of the liquid crystal panel P (hereinafter referred to as the panel transport upstream side). The right side in the figure shows the downstream side of the liquid crystal panel P in the transport direction (hereinafter referred to as the panel transport downstream side).

5 and 7 together, the liquid crystal panel P has a rectangular shape in plan view. In the liquid crystal panel P, a display region P4 having an outer shape along the outer peripheral edge is formed on the inner side of the outer peripheral edge of the liquid crystal panel P by a predetermined width. The liquid crystal panel P is transported in a direction in which the short side of the display region P4 is substantially aligned with the transport direction on the upstream side of the panel transport from the second alignment device 14 described later. The liquid crystal panel P is transported in a direction in which the long side of the display region P4 is substantially aligned with the transport direction on the panel transport downstream side of the second alignment device 14.

With respect to the front and back surfaces of the liquid crystal panel P, a first optical member F11 cut out from the long strip-shaped first optical member sheet F1, and a second optical member F12 cut out from the long strip-shaped second optical member sheet F2. And the 3rd optical member F13 cut out from the elongate strip-shaped 3rd optical member sheet | seat F3 is bonded.
In the present embodiment, polarizing films are bonded to both the backlight side and the display surface side of the liquid crystal panel P, respectively. On the surface of the liquid crystal panel P on the backlight side, a first optical member (optical member, specific region, facing portion) F11 is bonded as a polarizing film. A third optical member (an optical member, a specific region, a facing portion) F13 is bonded to the surface on the display surface side of the liquid crystal panel P as a polarizing film. On the surface of the liquid crystal panel P on the backlight side, a second optical member (an optical member, a specific region, a facing portion) F12 as a brightness enhancement film is further bonded to the first optical member F11.

As shown in FIG. 1, the film bonding system 1 includes a first alignment device 11 that transports the liquid crystal panel P from the upstream process to the panel transport upstream side of the roller conveyor 5 and aligns the liquid crystal panel P. The 1st bonding apparatus (bonding apparatus) 12 provided in the panel conveyance downstream rather than the alignment apparatus 11, the 1st cutting apparatus 13 provided in proximity to the 1st bonding apparatus 12, and the 1st bonding apparatus 12 And a second alignment device 14 provided on the downstream side of the panel conveyance with respect to the first cutting device 13.

Moreover, the film bonding system 1 is the 2nd bonding apparatus (bonding apparatus) 15 provided in the panel conveyance downstream rather than the 2nd alignment apparatus 14, and the 2nd provided in proximity to the 2nd bonding apparatus 15. A cutting device (cutting device) 16, a third alignment device 17 provided on the downstream side of the panel transport relative to the second bonding device 15 and the second cutting device 16, and a downstream side of the panel transport relative to the third alignment device 17 The 3rd bonding apparatus (bonding apparatus) 18 and the 3rd cutting apparatus (cutting apparatus) 19 provided in proximity to the 3rd bonding apparatus 18 are provided.

The first alignment device 11 holds the liquid crystal panel P and conveys it freely in the vertical and horizontal directions, and, for example, a camera (not shown) that images the upstream and downstream ends of the liquid crystal panel P. Have. The imaging data of this camera is sent to the control device 20. The control device 20 operates the first alignment device 11 based on the imaging data and the inspection data in the optical axis direction stored in advance. Note that a second alignment device 14 and a third alignment device 17 to be described later also have a camera, and use image data of this camera for alignment.

The first alignment device 11 is controlled by the control device 20 to perform alignment of the liquid crystal panel P with respect to the first bonding device 12. At this time, the liquid crystal panel P is positioned in a horizontal direction (hereinafter referred to as a component width direction) orthogonal to the transport direction and in a rotation direction around the vertical axis (hereinafter simply referred to as a rotation direction). In this state, the liquid crystal panel P is introduced into the bonding position of the first bonding apparatus 12.

The 1st bonding apparatus 12 is the upper surface of liquid crystal panel P conveyed below the lower surface of the elongate 1st optical member sheet | seat (to-be-processed object, optical member sheet | seat) F1 introduced into the bonding position ( (Backlight side) is bonded (see FIG. 3). The 1st bonding apparatus 12 unwinds the 1st optical member sheet | seat F1 from the 1st original fabric roll R1 which wound the 1st optical member sheet | seat F1, and 1st optical member sheet | seat F1 of the 1st optical member sheet | seat F1. A conveying device 12a that conveys along the longitudinal direction, and a pressure roll 12b that bonds the upper surface of the liquid crystal panel P conveyed by the roller conveyor 5 to the lower surface of the first optical member sheet F1 conveyed by the conveying device 12a. .

The transport device 12a holds the first original roll R1 around which the first optical member sheet F1 is wound, and rolls out the first optical member sheet F1 along the longitudinal direction of the first optical member sheet F1. And the pf collection | recovery part 12d which collect | recovers the protection film pf unrolled with the 1st optical member sheet | seat F1 on the upper surface of the 1st optical member sheet | seat F1 in the panel conveyance downstream of the 1st bonding apparatus 12.

The pinching roll 12b has a pair of laminating rollers that are arranged with their axial directions parallel to each other. A predetermined gap is formed between the pair of bonding rollers, and the inside of this gap is the bonding position of the first bonding apparatus 12. In this gap, the liquid crystal panel P and the first optical member sheet F1 are overlapped and introduced. The liquid crystal panel P and the first optical member sheet F1 are sent to the downstream side of the panel conveyance while being pressed between the bonding rollers. Thereby, the 1st bonding sheet | seat F21 by which the some liquid crystal panel P was continuously bonded on the lower surface of the elongate 1st optical member sheet | seat F1 at predetermined intervals is formed.

The 1st cutting device 13 is located in a panel conveyance downstream rather than the pf collection | recovery part 12d, cut | disconnects the 1st optical member sheet | seat F1 of the 1st bonding sheet | seat F21, and is larger than the display area P4 (this embodiment liquid crystal panel) In order to obtain a sheet piece F1S (see FIG. 4) larger than P, a predetermined portion (between the liquid crystal panels P arranged in the transport direction) of the first optical member sheet F1 is cut over the entire width in the component width direction. The first cutting device 13 can use a cutting blade. Alternatively, the first cutting device 13 can use a laser cutter. By this cutting | disconnection, the 1st single-sided bonding panel (optical display component, bonding body) P11 by which the sheet piece F1S larger than the display area P4 was bonded on the upper surface of liquid crystal panel P is formed (refer FIG. 4).

In the sheet piece F1S, the size of the portion that protrudes outside the liquid crystal panel P (the size of the surplus portion of the sheet piece F1S) is appropriately set according to the size of the liquid crystal panel P. For example, when the sheet piece F1S is applied to a medium-sized liquid crystal panel P of 5 to 10 inches, the distance between one side of the sheet piece F1S and one side of the liquid crystal panel P is 2 mm at each side of the sheet piece F1S. Set to a length in the range of ~ 5 mm.

The second alignment device 14 is arranged so that the first single-sided bonding panel P11 that has been transported substantially parallel to the short side of the display region P4 is transported substantially parallel to the long side of the display region P4. Convert. In addition, this direction change is performed when the optical axis direction of the other optical member sheet | seat bonded to liquid crystal panel P is arrange | positioned at right angle with respect to the optical axis direction of the 1st optical member sheet | seat F1.

The second alignment device 14 performs the same alignment as the first alignment device 11. That is, the second alignment device 14 is based on the inspection data in the optical axis direction stored in the control device 20 and the imaging data of the camera in the component width direction of the first single-sided bonding panel P11 with respect to the second bonding device 15. Positioning and positioning in the rotation direction are performed. In this state, the first single-sided bonding panel P <b> 11 is introduced into the bonding position of the second bonding device 15.

The 2nd bonding apparatus 15 is conveyed below the 2nd optical member sheet | seat F2 with respect to the lower surface of the elongate 2nd optical member sheet | seat (processed object, optical member sheet | seat) F2 introduced into the bonding position. The upper surface of the first single-sided bonding panel P11 (the backlight side of the liquid crystal panel P) is bonded (see FIG. 4). The 2nd bonding apparatus 15 unwinds the 2nd optical member sheet | seat F2 from the 2nd original fabric roll R2 which wound the 2nd optical member sheet | seat F2, and the 2nd optical member sheet | seat F2 of the 2nd optical member sheet | seat F2. A conveying device 15a that conveys along the longitudinal direction, and a pinching roll that bonds the upper surface of the first single-sided bonding panel P11 conveyed by the roller conveyor 5 to the lower surface of the second optical member sheet F2 conveyed by the conveying device 15a. 15b.

The transport device 15a holds the second original roll R2 around which the second optical member sheet F2 is wound, and rolls out the second optical member sheet F2 along the longitudinal direction of the second optical member sheet F2. And a second collection portion 15d that is located on the downstream side of the panel conveyance with respect to the pinching roll 15b and collects an excess portion of the second optical member sheet F2 that has passed through the second cutting device 16.

The pinching roll 15b has a pair of laminating rollers arranged with their axial directions parallel to each other. A predetermined gap is formed between the pair of bonding rollers, and the inside of this gap is the bonding position of the second bonding apparatus 15. In this gap, the first single-sided bonding panel P11 and the second optical member sheet F2 are overlapped and introduced. The 1st single-sided bonding panel P11 and the 2nd optical member sheet | seat F2 are sent out to a panel conveyance downstream, being pinched between bonding rollers. Thereby, the 2nd bonding sheet | seat (bonding body) F22 by which the several 1st single-sided bonding panel P11 was continuously bonded by the lower surface of the elongate 2nd optical member sheet | seat F2 forming predetermined intervals formed. Is done.

The 2nd cutting device 16 is located in the panel conveyance downstream rather than the pinching roll 15b, and the 1st optical of the 1st single-sided bonding panel P11 bonded to the lower surface of the 2nd optical member sheet | seat F2 and the 2nd optical member sheet | seat F2. The sheet piece F1S (see FIG. 4) of the member sheet F1 is simultaneously cut. The second cutting device 16 is, for example, a CO2 laser cutter, and ends the second optical member sheet F2 and the sheet piece F1S along the outer peripheral edge of the display region P4 (in the present embodiment, along the outer peripheral edge of the liquid crystal panel P). (See FIG. 5). By bonding the first optical member sheet F1 and the second optical member sheet F2 to the liquid crystal panel P and cutting them together, the accuracy in the optical axis direction of the first optical member sheet F1 and the second optical member sheet F2 is increased. At the same time, there is no deviation in the optical axis direction between the first optical member sheet F1 and the second optical member sheet F2, and the cutting with the first cutting device 13 is simplified.

By the cutting | disconnection of the 2nd cutting device 16, the 2nd single-sided bonding panel (optical display component, bonding body) P12 by which the 1st optical member F11 and the 2nd optical member F12 overlapped and bonded on the upper surface of liquid crystal panel P formed. (See FIG. 6). At this time, as shown in FIG. 2, the first optical element remaining in the frame shape by cutting off the facing portion (first optical member F11, second optical member F12) between the second single-sided bonding panel P12 and the display region P4. The surplus portion Y of the member sheet F1 and the surplus portion Y ′ of the second optical member sheet F2 are separated. A plurality of surplus portions Y ′ of the second optical member sheet F2 are connected in a ladder shape (see FIG. 2), and the surplus portions Y ′ of the second optical member sheet F2 are surplus portions Y of the first optical member sheet F1. At the same time, it is wound around the second recovery portion 15d.

Here, the “part facing the display area P4” is an area that is not less than the size of the display area P4 and not more than the size of the outer shape of the liquid crystal panel P, and avoids a functional part such as an electrical component mounting portion. Indicates the area. In the present embodiment, the surplus portion is laser-cut along the outer peripheral edge of the liquid crystal panel P at three sides excluding the functional portion in the liquid crystal panel P having a rectangular shape in plan view, and the liquid crystal panel P at one side corresponding to the functional portion. The surplus portion is laser-cut at a position that appropriately enters the display area P4 side from the outer peripheral edge of.
In addition, in this embodiment, although the structure which cut | disconnects the 2nd optical member sheet | seat F2 and the sheet piece F1S of the 1st optical member sheet | seat F1 simultaneously is mentioned, it is not restricted to this, The sheet piece of the 1st optical member sheet | seat F1 Only F1S or only the second optical member sheet F2 can be cut.

Referring to FIG. 1, the third alignment device 17 inverts the second single-sided bonding panel P12 with the backlight side of the liquid crystal panel P as the upper surface so that the display surface side of the liquid crystal panel P is the upper surface. The same alignment as that of the first alignment device 11 and the second alignment device 14 is performed. That is, the third alignment device 17 is based on the inspection data in the optical axis direction stored in the control device 20 and the imaging data of the camera in the component width direction of the second single-sided bonding panel P12 with respect to the third bonding device 18. Positioning and positioning in the rotation direction are performed. In this state, the second single-sided bonding panel P <b> 12 is introduced into the bonding position of the third bonding device 18.

The 3rd bonding apparatus 18 is conveyed below the 3rd optical member sheet | seat F3 with respect to the lower surface of the elongate 3rd optical member sheet | seat (processed object, optical member sheet | seat) F3 introduced into the bonding position. The upper surface of the second single-sided bonding panel P12 (the display surface side of the liquid crystal panel P) is bonded. The 3rd bonding apparatus 18 unwinds the 3rd optical member sheet | seat F3 from the 3rd original fabric roll R3 which wound the 3rd optical member sheet | seat F3, the 3rd optical member sheet | seat F3 of the 3rd optical member sheet | seat F3. A conveying device 18a that conveys along the longitudinal direction, and a pinching roll that bonds the upper surface of the second single-sided bonding panel P12 conveyed by the roller conveyor 5 to the lower surface of the third optical member sheet F3 conveyed by the conveying device 18a. 18b.

The transport device 18a holds the third original roll R3 around which the third optical member sheet F3 is wound, and rolls out the third optical member sheet F3 along the longitudinal direction of the third optical member sheet F3. And a third collection portion 18d that is located on the panel transport downstream side of the pinching roll 18b and collects the surplus portion of the third optical member sheet F3 that has passed through the third cutting device 19.

The pinching roll 18b has a pair of laminating rollers arranged in parallel with each other in the axial direction. A predetermined gap is formed between the pair of bonding rollers, and the gap is the bonding position of the third bonding device 18. In this gap, the second single-sided bonding panel P12 and the third optical member sheet F3 are overlapped and introduced. 2nd single-sided bonding panel P12 and the 3rd optical member sheet | seat F3 are sent out to a panel conveyance downstream, being pinched between bonding rollers. Thereby, the 3rd bonding sheet | seat (bonding body) F23 by which the several 2nd single-sided bonding panel P12 was continuously bonded by the lower surface of the elongate 3rd optical member sheet | seat F3 forming predetermined intervals formed. Is done.

3rd cutting device 19 is located in the panel conveyance downstream rather than pinching roll 18b, and cuts 3rd optical member sheet | seat F3. The third cutting device 19 is a laser processing machine similar to the second cutting device 16, and the third optical member sheet F3 is endless along the outer peripheral edge of the display region P4 (for example, along the outer peripheral edge of the liquid crystal panel P). Disconnect.

By the cutting | disconnection of the 3rd cutting device 19, the double-sided bonding panel (optical display device) P13 by which the 3rd optical member F13 was bonded to the upper surface of the 2nd single-sided bonding panel P12 is formed (refer FIG. 7).
At this time, the double-sided bonding panel P13 and the surplus portion (not shown) of the third optical member sheet F3 remaining in a frame shape are separated by cutting off the facing portion (third optical member F13) of the display region P4. . The surplus portion of the third optical member sheet F3 has a ladder-like shape, like the surplus portion Y ′ of the second optical member sheet F2, and has a ladder shape. The surplus portion is wound around the third recovery portion 18d.

The double-sided bonding panel P13 is inspected for defects (bonding failure, etc.) through a defect inspection device (not shown), and then conveyed to a downstream process to be subjected to other processing.

Hereinafter, the optical member sheets F1, F2, and F3 are optical member sheets FX, the liquid crystal panels P that are bonded to the optical member sheets F1, F2, and F3, and the single-side bonded panels P11 and P12 are optical display components PX. The optical members F11, F12, and F13 may be collectively referred to as an optical member FS.

The polarizer film constituting the optical member sheet FX is formed, for example, by uniaxially stretching a PVA film dyed with a dichroic dye. In this case, the difference in the optical axis direction tends to occur between the inner side in the width direction and the outer side in the width direction of the optical member sheet FX due to unevenness in the thickness of the PVA film during stretching, uneven coloring in the dichroic dye, and the like. It is in.

Therefore, in the present embodiment, alignment of the optical display component PX to be bonded to the optical member sheet FX is performed based on the inspection data of the in-plane distribution of the optical axis in each part of the optical member sheet FX stored in advance in the control device 20. Above, the optical display component PX is bonded to the optical member sheet FX. Note that the optical axis direction may be detected while the optical member sheet FX is unwound, and the optical display component PX may be aligned based on the detection data.

As shown in FIG. 3, the liquid crystal panel P includes, for example, a rectangular first substrate P1 made of a TFT substrate, a rectangular second substrate P2 disposed to face the first substrate P1, and a first substrate P1. And a liquid crystal layer P3 sealed between the second substrate P2. For convenience of illustration, hatching of each layer is omitted.

Referring to FIGS. 5 and 6, the first substrate P1 has the three outer peripheral edges of the first substrate P1 along the corresponding three sides of the second substrate P2, and the remaining outer peripheral edges of the first substrate P1. One side is projected outside the corresponding one side of the second substrate P2. As a result, an electrical component mounting portion P5 that projects outward from the second substrate P2 is provided on the one side of the first substrate P1.

4 and 6, the second cutting device 16 detects the outer periphery of the display area P4 with a detecting means (detection unit) such as a camera 16a, and the first cutting device 16 along the outer periphery of the display area P4. The optical member sheet F1 and the second optical member sheet F2 are cut. Similarly, the third cutting device 19 detects the outer peripheral edge of the display area P4 with a detection means (detection unit) such as a camera 19a, and the third cutting device 19 moves the third optical member sheet F3 along the outer peripheral edge of the display area P4. Disconnect. Outside the display area P4, a frame portion G having a predetermined width for arranging a sealant or the like for joining the first substrate P1 and the second substrate P2 is provided. Laser cutting by the second cutting device 16 and the third cutting device 19 is performed within the width of the frame portion G.

When the resin-made optical member sheet FX is laser-cut alone, the cut end of the optical member sheet FX may be swollen or wavy due to thermal deformation. For this reason, when the optical member sheet FX after laser cutting is bonded to the optical display component PX, poor bonding such as air mixing and distortion is likely to occur in the optical member sheet FX.

On the other hand, in this embodiment in which the optical member sheet FX is laser-cut after the optical member sheet FX is bonded to the liquid crystal panel P, the cut end of the optical member sheet FX is backed up on the glass surface of the liquid crystal panel P, and the optical member sheet FX It is difficult for the cut ends to bulge, corrugate, and the like, and since it is after bonding to the liquid crystal panel P, the above-mentioned bonding failure is also unlikely to occur.

¡The run-out width (tolerance) of the cutting line of the laser processing machine is smaller than that of a cutting blade such as a cutter. Therefore, in this embodiment, compared with the case where the optical member sheet FX is cut using a cutting blade, the width of the frame portion G can be reduced, and the liquid crystal panel P can be reduced in size and / or the display area P4. Larger size is possible. This is effective for application to high-function mobile devices that require expansion of the display screen while the size of the housing is limited, such as smartphones and tablet terminals in recent years.

Further, when the optical member sheet FX is cut into a sheet piece aligned with the display area P4 of the liquid crystal panel P and then bonded to the liquid crystal panel P, the dimensional tolerance of the sheet piece, the dimensional tolerance of the liquid crystal panel P, and the sheet piece and the liquid crystal Since the dimensional tolerance of the relative bonding position with the panel P overlaps, it becomes difficult to narrow the width of the frame part G of the liquid crystal panel P (it becomes difficult to enlarge the display area).

On the other hand, when the optical member sheet FX is bonded to the liquid crystal panel P and then cut in accordance with the display region P4, only the runout tolerance of the cutting line needs to be considered, and the width tolerance of the frame portion G can be reduced. (± 0.1 mm or less). Also in this respect, the width of the frame part G of the liquid crystal panel P can be reduced (the display area can be enlarged).

Further, by cutting the optical member sheet FX with a laser instead of a blade, the cutting force is not input to the liquid crystal panel P, and it becomes difficult for cracks and chips to occur at the edge of the substrate of the liquid crystal panel P, such as a heat cycle. The durability against is improved. Similarly, since there is no contact with the liquid crystal panel P, there is little damage to the electrical component mounting portion P5.

As shown in FIG. 5, when laser cutting the optical member sheet FX (third optical member sheet F3 in FIG. 5), for example, a laser cut start point pt1 is set on the extension of one long side of the display area P4. First, cutting of this one long side is started from the starting point pt1. The end point pt2 of the laser cut is set at a position where the laser goes around the display area P4 and reaches the extension of the short side on the start point side of the display area P4. The start point pt1 and the end point pt2 are set so as to be able to withstand the tension when the optical member sheet FX is wound up, leaving a predetermined connection portion in the surplus portion of the optical member sheet FX.

FIG. 8 is a plan view showing the suction device 30 provided in the second cutting device 16. In addition to the suction device 30, the second cutting device 16 irradiates the optical member sheet FX with laser light L from the upper side in the orthogonal direction of the optical member sheet FX as shown in FIGS. 12 and 13. A laser beam irradiation device 21 for cutting is provided. The third cutting device 19 has the same configuration.

Referring to FIG. 8, the suction device 30 is disposed on the outer sides of the outer peripheral four sides of an opposing portion (corresponding to the optical member FS, hereinafter referred to as a cutting region (specific region) K) in a rectangular shape in plan view in the optical member sheet FX to be cut. The first to fourth dust collecting boxes 31a to 31d and the first to fourth connecting brackets 32a for connecting the dust collecting boxes 31a to 31d to the side surfaces of the adjacent ones in the clockwise direction in the plan view of FIG. To 32d.
In other words, the first connection bracket 32a connects the first dust collection box 31a to the side surface of the second dust collection box 31b. The second connection bracket 32b connects the second dust collection box 31b to the side surface of the third dust collection box 31c. The third connection bracket 32c connects the third dust collection box 31c to the side surface of the fourth dust collection box 31d. The fourth connection bracket 32d connects the fourth dust collection box 31d to the side surface of the first dust collection box 31a.

Hereinafter, the four outer sides corresponding to the respective dust collection boxes 31a to 31d in the cutting region K are referred to as first to fourth cutting lines (processing positions and cutting portions) S1 to S4, respectively. Further, the dust collection boxes 31a to 31d, the connecting brackets 32a to 32d, and the cutting lines S1 to S4 may be collectively indicated by reference numerals 31, 32, and SX, respectively. The first dust collection box 31a and the third dust collection box 31c are arranged outside the long side portion of the outer periphery of the cutting region K. The second dust collection box 31b and the fourth dust collection box 31d are disposed outside the short side portion of the outer periphery of the cutting region K. Reference numeral CN in the figure denotes a duct connection pipe projecting from the rear or side of each dust collection box 31.

12 and 13 together, each dust collection box 31 has a hollow rectangular parallelepiped shape, and corresponds to a cutting line (processing position, cutting portion) SX side in plan view (hereinafter, the front side of the dust collection box 31). And the front wall 33 located at the cutting line SX. Each dust collection box 31 inclines the lower part of the front wall 33 obliquely forward and downward, and forms an extension part 35 having a triangular shape in cross section in the front edge part of the lower wall 34. By the lower part of the front wall 33 and the extending part 35 of the lower wall 34, a suction nozzle 36 having a channel 36 a inclined rearwardly upward is formed at the front lower edge part of each dust collection box 31.

The suction nozzle 36 opens a suction port 37 over the entire width of the dust collection box 31 in the length direction of the corresponding cutting line SX (scanning direction of the laser light L). The suction port 37 is disposed close to the corresponding cutting line SX from the outside of the cutting region K. The front wall 33 is fixed to the upper wall 38 so that the vertical position can be adjusted. The vertical width of the suction port 37 can be adjusted by the vertical movement of the front wall 33. The inclination angle (the inclination angle of the inclined surface of the extending portion 35, which is the lower surface of the flow path 36a in FIG. 13) θ1 in a cross-sectional view of the flow path 36a, is about 45 ° with respect to the upper surface of the optical member sheet FX. . The downstream opening angle (opening angle of the upper and lower surfaces of the flow path 36a) θ2 in the cross-sectional view of the flow path 36a is set to about 15 °.

Each dust collection box 31 is arranged outside the cutting area K with respect to the corresponding cutting line SX in plan view with a distance d that does not interfere with the laser light L. In the present embodiment, the suction device 30 does not move during laser cutting, and the distance d is smaller than when the suction device 30 moves during laser cutting, which contributes to downsizing of the suction device 30.

A support air flow path 41 is formed in the lower wall 34 of each dust collection box 31 inside the lower wall 34. The flow path 41 feeds support air introduced from, for example, an introduction port 42 that opens to the lower end portion of the rear wall 39 to the outlet port 43 that opens to the lower surface of the extension portion 35. A thin plate-shaped guide plate 44 is fixed to the lower surface of the front portion of the lower wall 34. A blowing nozzle 51 that opens in front of the lower wall 34 is formed between the guide plate 44 and the lower wall 34. The blowout nozzle 51 forms a blowout port 52 that extends across the entire width of the dust collection box 31 just like the suction port 37 just below the suction port 37 of the dust collection box 31.

For example, before the optical display component PX is transported to the cutting position by the second cutting device 16, the suction device 30 raises each dust collection box 31 to retract from the cutting position, and the optical display component PX is transported to the cutting position. Then, each dust collection box 31 is lowered. When the dust collection boxes 31 are lowered, the lower surface of the guide plate 44 is brought into contact with the upper surface of the optical display component PX (the uppermost surface of the optical member sheet FX to be cut), and the suction port 37 is located outside and in the vicinity of the corresponding cutting line SX. And the blowout port 52 is arrange | positioned. Thereby, when the optical member sheet FX is laser-cut, smoke-like decomposition products (fumes) generated by melting and decomposition reactions of the optical member sheet FX can be collected in each dust collection box 31.

In each dust collection box 31, the wind pressure at the tip of the suction nozzle 36 is set to 0.1 kPa or more at static pressure, and the wind speed is set to 7 m / s or more. On the other hand, the wind pressure and wind speed at the tip of the blowing nozzle 51 are set smaller than the wind pressure and wind speed of the suction nozzle 36. Therefore, the support air blown out by the blowout nozzle 51 flows from the blowout port 52 so as to return to the suction port 37 side immediately above the blowout port 52 and is sucked into the suction nozzle 36. By this air flow, fume attachment to the upper surface of the optical member sheet FX is effectively suppressed in the range of the distance d between the suction port 37 and the cutting line SX. The support air blown out by the blow-out nozzle 51 is warm air, and gives heat energy to the fumes that are sublimated materials, making it difficult to adhere to the optical member sheet FX.

The plurality of cutting lines SX and the plurality of dust collection boxes 31 surround the entire circumference of the rectangular cutting region K in plan view. That is, in the cutting process by the second cutting device 16, the laser beam L scans and cuts the outer periphery of the cutting region K of the optical member sheet FX in an endless manner. Note that the cutting in this cutting step is not limited to a rectangular shape, and may be an arbitrary shape. When this shape includes a curve, the suction port 37 and the blowout port 52 can be similarly curved. Moreover, it is not limited to an endless cut, but may be a cut of three sides, two sides, and one side. In this case, the dust collection box 31 may be provided corresponding to only the cutting position.

Referring to FIGS. 8 and 10, each connection bracket 32 includes a side plate 46 fixed to the side surface in the clockwise direction of the corresponding dust collection box 31 and a connection plate 47 fixed to the side surface of the adjacent dust collection box 31. And is formed in an L shape in plan view.

9 and 11 together, the connecting plate 47 is formed with a plurality of elongated holes 48 extending in the horizontal direction (the direction along the upper surface of the optical member sheet FX). The bolts 49 inserted through the long holes 48 are screwed onto the side surfaces of the adjacent dust collection boxes 31 and tightened. Thereby, adjacent dust collection boxes 31 are connected to each other at a right angle. When the bolts 49 are loosened, the adjacent dust collection boxes 31 can be slid along the long holes 48.

Each dust collection box 31 moves in a direction along the corresponding cutting line SX by movement along the long hole 48. By this movement, the amount of overlap of the suction port 37 of each dust collection box 31 with respect to the side surface of the adjacent dust collection box 31 is increased or decreased, and thereby the length of the suction port 37 facing the cutting region K is increased or decreased.

The suction device 30 is formed in a rectangular shape surrounded by the plurality of suction ports 37 by increasing or decreasing the length of the suction ports 37 facing the cutting region K as described above while keeping the plurality of dust collection boxes 31 connected at right angles. Enlarge or reduce the area. Thereby, when performing laser cutting on the optical display component PX having a different size in the cutting region K of the optical member sheet FX, the suction port 37 of each dust collection box 31 is appropriately connected to the cutting line SX of the optical member sheet FX. It becomes possible to make it close to a distance.

Each dust collection box 31 moves forward and backward in a direction perpendicular to the cutting line SX with respect to the corresponding cutting line SX. However, as compared with the case of simply moving in the direction intersecting the cutting line SX, in the above configuration, fumes near the seam between the cutting lines SX (corner of the cutting region K) can be collected without leakage.

That is, in the above configuration, a plurality of dust collection boxes can be obtained by increasing or decreasing the overlap amount of the suction port 37 with respect to the adjacent dust collection boxes 31 while moving each dust collection box 31 in the direction along the corresponding cutting line SX. 31 is advanced and retracted with respect to the corresponding cutting line SX at the same time. For this reason, the suction port 37 always opens to the corner of the rectangular area, and it becomes possible to collect the fumes without leakage.

FIG. 14 and FIG. 15 show a modification of the configuration for moving each dust collection box 31 forward and backward. The dust collection boxes 31a to 31d are first to fourth connection brackets 32a ′ to 32d ′ (hereinafter, may be collectively referred to as reference numeral 32 ′) on the side surfaces of the dust collection boxes 31a to 31d that are adjacent in the clockwise direction in the plan view. Connected.
In other words, the first connection bracket 32a ′ connects the first dust collection box 31a to the side surface of the second dust collection box 31b. The second connection bracket 32b ′ connects the second dust collection box 31b to the side surface of the third dust collection box 31c. The third connection bracket 32c ′ connects the third dust collection box 31c to the side surface of the fourth dust collection box 31d. The fourth connection bracket 32d ′ connects the fourth dust collection box 31d to the side surface of the first dust collection box 31a.
Each connection bracket 32 ′ connects, for example, a pair of connection plates 47 ′ fixed to the side surface of the corresponding dust collection box 31 in the clockwise direction and the side surface of the adjacent dust collection box 31 in an L shape in plan view. Configured.

A plurality of long holes 48 are formed in each connecting plate 47 ′, and the bolts 49 inserted through the long holes 48 are screwed into the side surfaces of the corresponding dust collection boxes 31 to be tightened, so that adjacent dust collection boxes 31 are connected to each other. Are concatenated. Further, the dust collection box 31 can be moved forward and backward by sliding the dust collection box 31 with the bolts 49 loosened along the long holes 48.
Accordingly, as described above, the plurality of dust collection boxes 31 can be advanced and retracted while being simultaneously moved in the direction along the corresponding cutting line SX. Further, the dust collection box 31 can be advanced and retracted only in the short side direction or the long side direction of the cutting region K.

In the present embodiment, the plurality of dust collection boxes 31 are manually moved. However, the plurality of dust collection boxes 31 may be automatically moved by a separate driving device.

As described above, the laser processing apparatus in the embodiment includes the suction device 30 that opens the suction port 37 over the entire length of the cutting line SX in the vicinity of the cutting line SX of the optical member sheet FX in the optical display component PX. Thus, it is possible to suck the fumes generated by the laser processing without omission over the entire length of the cutting line SX while ensuring the product processing accuracy by eliminating the inclination of the laser beam L and the like. As a result, it is possible to prevent fume from adhering to the product surface and to prevent line contamination due to fume adhering to the product.

In the laser processing apparatus, the cutting line SX is provided endlessly on the outer periphery of the cutting region K of the optical member sheet FX, and the suction device 30 is provided so as to surround the entire periphery of the cutting region K. Fume can be sucked and removed without leakage over the entire circumference of the cutting region K.
Further, since the suction device 30 can be moved back and forth with respect to the cutting line SX, it can easily cope with laser processing of workpieces having different processing positions.

In addition, the laser processing apparatus includes the blowout port 52 that blows out air toward the product surface between the cutting line SX and the suction port 37, so that the suction device 30 is located between the cutting line SX and the suction port 37. Can prevent fume from adhering to the product surface.
Further, the suction device 30 blows warm air from the blowout port, so that fume can be more effectively suppressed from adhering to the product surface between the cutting line SX and the suction port 37.

And according to the production system of the optical display device in the said embodiment, after bonding the optical member sheet | seat FX larger than the display area P4 of liquid crystal panel P to the liquid crystal panel P, the excess part of the optical member sheet | seat FX is cut off. Thus, the optical member FS having a size corresponding to the display region P4 can be accurately formed on the surface of the liquid crystal panel P, and the frame portion G outside the display region P4 is narrowed to enlarge the display area and downsize the device. Can be achieved.
Moreover, the cutting | disconnection using the laser beam L has a higher precision than the cutting | disconnection using a cutting blade, and can narrow the frame part G around the display area P4 compared with the case where a cutting blade is used.
Further, the optical member sheet FX (optical member) that remains on the optical display component PX without causing a taper angle (an angle with respect to the direction orthogonal to the bonding surface) due to the inclination of the laser light L to the cut end of the optical member sheet FX. The effective area of FS) can be expanded, contributing to further narrowing of the frame.
Further, the fumes generated by the laser processing can be sucked without leakage over the entire length of the cutting line SX, and the fume can be prevented from adhering to the product surface, and line contamination due to the fumes adhering to the product can be prevented.

The present invention is not limited to the above embodiment. For example, in the present embodiment, as an example of processing by irradiating a workpiece with laser light, a configuration in which an optical member sheet is cut into a frame shape is described. However, the present invention is not limited thereto, and for example, at least two optical member sheets are provided. The optical member sheet may be divided into slits, cuts penetrating the optical member sheet, or grooves (cuts) having a predetermined depth may be formed in the optical member sheet. Specifically, for example, there are cutting (cutting off), half-cutting, marking processing and the like of the end of the optical member sheet.

Moreover, in the said embodiment, the 2nd cutting device 16 detects the outer periphery of the display area P4 with detection means, such as the camera 16a, and the 1st optical member sheet | seat F1 and the outer periphery of the display area P4, etc. The third cutting device 19 cuts the second optical member sheet F2, and the third cutting device 19 detects the outer peripheral edge of the display area P4 with a detecting means such as a camera 19a, and the third optical device along the outer peripheral edge of the display area P4. Although the member sheet F3 is cut, the configuration of the detection means is not limited to this.

Specifically, the film bonding system 1 detects the outer periphery of the bonding surface of the first optical member sheet F1, the second optical member sheet F2, and the liquid crystal panel P in the second bonding sheet F22. It is good also as cutting the cutting line SX set along the outer periphery of the bonding surface. Moreover, in the 3rd bonding sheet | seat F23, the film bonding system 1 has a detection means to detect the outer periphery of the bonding surface of the 3rd optical member sheet | seat F3 and liquid crystal panel P, and the outer periphery of a bonding surface The cutting line SX set along the line may be cut.

Such detection of the outer periphery of the bonding surface and cutting with a cutting device are performed in detail as follows. Hereinafter, modified examples of the film bonding system 1 will be described with reference to FIGS.

FIG. 16 is a schematic diagram of first detection means 61 (detection unit) that detects the outer periphery of the bonding surface. The 1st detection means 61 with which the film bonding system 1 of this embodiment is provided is the bonding surface (henceforth 1st bonding surface SA1) of liquid crystal panel P and the sheet piece F1S in the 2nd bonding sheet | seat F22. Imaging device 63 that captures an image of outer peripheral edge ED, illumination light source 64 that illuminates outer peripheral edge ED, storage of an image captured by imaging device 63, and detection of outer peripheral edge ED based on the image. And a control unit 65 that performs an operation for the purpose.

Such first detection means 61 is provided on the panel conveyance upstream side of the second cutting device 16 in FIG. 1 and is provided between the pinching roll 15 b and the second cutting device 16.

The imaging device 63 is fixed and arranged inside the first bonding surface SA1 with respect to the outer peripheral edge ED, and the normal line of the first bonding surface SA1 and the normal line of the imaging surface 63a of the imaging device 63 are arranged. The posture is inclined so as to form an angle θ (hereinafter referred to as an inclination angle θ of the imaging device 63). The imaging device 63 directs the imaging surface 63a to the outer peripheral edge ED, and captures an image of the outer peripheral edge ED from the side where the sheet piece F1S is bonded in the second bonding sheet F22.

The inclination angle θ of the imaging device 63 can be set so that the outer peripheral edge of the first substrate P1 constituting the first bonding surface SA1 can be reliably imaged. For example, when the liquid crystal panel P is formed by so-called multiple chamfering, in which the mother panel is divided into a plurality of liquid crystal panels, the liquid crystal panel P is shifted to the outer peripheral edge of the first substrate P1 and the second substrate P2 constituting the liquid crystal panel P. May occur, and the end surface of the second substrate P2 may be displaced outward from the end surface of the first substrate P1. In such a case, the inclination angle θ of the imaging device 63 can be set so that the outer peripheral edge of the second substrate P2 does not enter the imaging field of view of the imaging device 63.

In such a case, the inclination angle θ of the imaging device 63 is a distance H between the first bonding surface SA1 and the center of the imaging surface 63a of the imaging device 63 (hereinafter referred to as the height H of the imaging device 63). Can be set to fit. For example, when the height H of the imaging device 63 is 50 mm or more and 100 mm or less, the inclination angle θ of the imaging device 63 can be set to an angle in the range of 5 ° or more and 20 ° or less. However, when the deviation amount is empirically known, the height H of the imaging device 63 and the inclination angle θ of the imaging device 63 can be obtained based on the deviation amount. In the present embodiment, the height H of the imaging device 63 is set to 78 mm, and the inclination angle θ of the imaging device 63 is set to 10 °.

The inclination angle θ of the imaging device 63 may be 0 °. FIG. 17 is a schematic diagram showing a modification of the first detection means 61, and is an example in the case where the inclination angle θ of the imaging device 63 is 0 °. In this case, each of the imaging device 63 and the illumination light source 64 may be disposed at a position overlapping the outer peripheral edge ED along the normal direction of the first bonding surface SA1.

A distance H1 between the first bonding surface SA1 and the center of the imaging surface 63a of the imaging device 63 (hereinafter referred to as a height H1 of the imaging device 63) detects the outer peripheral edge ED of the first bonding surface SA1. It can be set at an easy position. For example, the height H1 of the imaging device 63 can be set in the range of 50 mm to 150 mm.

The illumination light source 64 is fixed and arranged on the opposite side to the side where the sheet piece F1S in the second bonding sheet F22 is bonded. The illumination light source 64 is arrange | positioned rather than the outer periphery ED on the outer side of 1st bonding surface SA1. In the present embodiment, the optical axis of the illumination light source 64 and the normal line of the imaging surface 63a of the imaging device 63 are parallel.

In addition, the illumination light source 64 may be arrange | positioned at the side (namely, the same side as the imaging device 63) by which the sheet piece F1S in the 2nd bonding sheet | seat F22 was bonded.

If the outer peripheral edge ED imaged by the imaging device 63 is illuminated by the illumination light emitted from the illumination light source 64, the optical axis of the illumination light source 64 and the normal line of the imaging surface 63a of the imaging device 63 intersect. It may be.

FIG. 18 is a plan view showing a position where the outer peripheral edge of the bonding surface is detected. An inspection area CA is set on the conveyance path of the second bonding sheet F22 shown in the drawing. Inspection area | region CA is set in the position corresponding to the outer periphery ED of 1st bonding surface SA1 in liquid crystal panel P conveyed. In the figure, the inspection area CA is set at four locations corresponding to the four corners of the first bonding surface SA1 that is rectangular in plan view, and the corners of the first bonding surface SA1 are detected as the outer peripheral edge ED. It has a configuration. In the figure, among the outer peripheral edges of the first bonding surface SA1, the hook-shaped part corresponding to the corner is shown as the outer peripheral edge ED.

The first detection means 61 in FIG. 16 detects the outer peripheral edge ED in the four inspection areas CA.
Specifically, the imaging device 63 and the illumination light source 64 are arranged in each inspection area CA, and the first detection means 61 is provided at each corner of the first bonding surface SA1 for each liquid crystal panel P to be transported. And the outer peripheral edge ED is detected based on the imaging data. Data of the detected outer peripheral edge ED is stored in the control unit 65 shown in FIG.

In addition, if the outer periphery of 1st bonding surface SA1 is detectable, the setting position of inspection area | region CA is not restricted to this. For example, each inspection area | region CA may be arrange | positioned in the position corresponding to a part (for example, center part of each side) of each edge | side of 1st bonding surface SA1. In this case, each side (four sides) of the first bonding surface SA1 is detected as an outer peripheral edge.

Moreover, the imaging device 63 and the illumination light source 64 are not limited to the configuration arranged in each inspection area CA, but are configured to be able to move along a movement path that is set along the outer peripheral edge ED of the first bonding surface SA1. It may be. In this case, the imaging device 63 and the illumination light source 64 are configured to detect the outer peripheral edge ED when the imaging device 63 and the illumination light source 64 are positioned in each inspection area CA, so that one imaging device 63 and one illumination light source 64 are provided. In this case, the outer periphery ED can be detected.

The cutting line for the sheet piece F1S and the second optical member sheet F2 by the second cutting device 16 is set based on the detection result of the outer peripheral edge ED of the first bonding surface SA1.

For example, based on the memorized data of the outer peripheral edge ED of the first bonding surface SA1, the control unit 65 of the first detection means 61 determines that the first optical member F11 is outside the liquid crystal panel P (first bonding surface SA1. The cutting line of the sheet piece F1S and the second optical member sheet F2 can be set so as not to protrude outside. In addition, the setting of the cutting line is not necessarily performed by the control unit 65 of the first detection unit 61, and the data of the outer peripheral edge ED detected by the first detection unit 61 is used, and the calculation of the bonding surface is performed separately. A cutting line may be set along the outer peripheral edge.

The second cutting device 16 cuts the sheet piece F1S and the second optical member sheet F2 at a cutting line set along the outer peripheral edge ED of the bonding surface.

Returning to FIG. 1, the second cutting device 16 is provided on the downstream side of the panel conveyance with respect to the first detection means 61. The second cutting device 16 includes a portion facing the display region P4 (see FIG. 4) of the sheet piece F1S and the second optical member sheet F2 bonded to the liquid crystal panel P, and a surplus portion outside the facing portion. Are cut along a cutting line set based on the detected outer peripheral edge ED, and the first optical member F11 and the second optical member F12 (see FIG. 7) having a size corresponding to the display region P4 are cut out. Thereby, the 2nd single-sided bonding panel P12 in which the 1st optical member F11 and the 2nd optical member F12 were piled up and bonded on the upper surface of liquid crystal panel P is formed.

In the present embodiment, the surplus portion is laser-cut along the outer peripheral edge of the liquid crystal panel P at three sides excluding the functional portion in the liquid crystal panel P having a rectangular shape in plan view, and the liquid crystal panel P at one side corresponding to the functional portion. It is possible to adopt a configuration in which the surplus portion is laser-cut at a position that appropriately enters the display region P4 side from the outer peripheral edge. For example, when the first substrate P1 is a TFT substrate, it is possible to adopt a configuration in which a cut is made at a position shifted from the outer peripheral edge of the liquid crystal panel P to the display region P4 side by a predetermined amount so as to exclude the functional portion on one side corresponding to the functional portion.

FIG. 19 is a schematic diagram of the second detection means 62 (detection unit) that detects the outer peripheral edge of the bonding surface. The 2nd detection means 62 with which the film bonding system 1 of this embodiment is provided is the bonding surface (henceforth, 2nd bonding surface SA2) of liquid crystal panel P and the 3rd optical member sheet | seat F3 in the 3rd bonding sheet | seat F23. The imaging device 63 that captures an image of the outer peripheral edge ED, the illumination light source 64 that illuminates the outer peripheral edge ED, and the image captured by the imaging device 63 are stored, and the outer peripheral edge ED is based on the image. And a control unit 65 that performs a calculation for detecting. The second detection means 62 has the same configuration as the first detection means 61 described above.

Such second detection means 62 is provided on the panel conveyance upstream side of the third cutting device 19 in FIG. 1 and is provided between the pinching roll 18b and the third cutting device 19. The 2nd detection means 62 detects outer periphery ED of 2nd bonding surface SA2 similarly to the above-mentioned 1st detection means 61 in the test | inspection area | region set on the conveyance path | route of the 3rd bonding sheet | seat F23.

The cutting line for the third optical member sheet F3 by the third cutting device 19 is set based on the detection result of the outer peripheral edge ED of the second bonding surface SA2.

For example, based on the stored data of the outer peripheral edge ED of the second bonding surface SA2, the control unit 65 of the second detection means 62 causes the third optical member F13 to be outside the liquid crystal panel P (second bonding surface SA2). The cutting line of the third optical member sheet F3 can be set so that the size does not protrude outside. In addition, the setting of the cutting line is not necessarily performed by the control unit 65 of the second detection unit 62, and the data of the outer peripheral edge ED detected by the second detection unit 62 is used, and the bonding surface is separately calculated using a calculation unit. A cutting line may be set along the outer peripheral edge.

The third cutting device 19 cuts the third optical member sheet F3 at the cutting line set along the outer peripheral edge ED of the bonding surface.

The third cutting device 19 detects a portion facing the display region P4 (see FIG. 6) of the third optical member sheet F3 bonded to the liquid crystal panel P and a surplus portion outside the facing portion. The third optical member F13 (see FIG. 7) having a size corresponding to the display area P4 is cut out along the cutting line set based on the outer peripheral edge ED. Thereby, the double-sided bonding panel P13 by which the 3rd optical member F13 was bonded by the upper surface of the 2nd single-sided bonding panel P12 is formed.
Also in the film bonding system according to the above modification, fume adhesion to the product surface can be effectively suppressed without affecting the product processing accuracy, which can contribute to narrowing the frame.

In the film bonding system 1 of the said embodiment, the outer periphery of the bonding surface is detected for every some liquid crystal panel P using a detection means (detection part), and each liquid crystal panel P based on the detected outer periphery. The cutting position of the sheet piece F1S, the second optical member sheet F2, and the third optical member sheet F3 bonded to each other is set. Thereby, an optical member having a desired size can be separated regardless of individual differences in the sizes of the liquid crystal panel P and the sheet piece F1S. For this reason, quality variations due to individual differences in the sizes of the liquid crystal panel P and the sheet piece F1S can be eliminated, and the frame area around the display area can be reduced to enlarge the display area and downsize the device.

The configurations in the above-described embodiments and modifications are examples of the present invention, and various modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Film bonding system (production system of an optical display device) 12 1st bonding apparatus (bonding apparatus) 15 2nd bonding apparatus (bonding apparatus) 18 3rd bonding apparatus (bonding apparatus) 16 2nd cutting Device (cutting device) 19 Third cutting device (cutting device) 21 Laser light irradiation device 30 Suction device 37 Suction port 52 Outlet 61 First detection means (detection means) 62 Second detection means (detection means) P Liquid crystal panel ( Optical display component) P4 Display area F1 First optical member sheet (workpiece, optical member sheet) F2 Second optical member sheet (workpiece, optical member sheet) F3 Third optical member sheet (workpiece, optical member) Sheet) F11 first optical member (optical member, specific area, facing portion) F12 second optical member (optical member, specific area, Direction part) F13 3rd optical member (optical member, specific area, facing part) P11 1st single-sided bonding panel (optical display component, bonding body) P12 2nd single-sided bonding panel (optical display component, bonding body) P13 double-sided Bonding panel (optical display device) ED outer periphery PX optical display component FS optical member FX optical member sheet SA1 first bonding surface (bonding surface) SA2 second bonding surface (bonding surface) SX cutting line (processing position) , Cutting part) Y, Y 'surplus part L laser light K cutting area (specific area).

Claims (7)

1. A laser processing apparatus for irradiating a processing position of a workpiece with laser light,
   A laser processing apparatus comprising a suction device that opens a suction port over the entire length of the processing position in the vicinity of the processing position.
2. The laser processing apparatus according to claim 1, wherein the processing position is provided endlessly on an outer periphery of the specific area of the workpiece, and the suction device is provided so as to surround the entire periphery of the specific area.
3. The laser processing apparatus according to claim 1 or 2, wherein the suction device is movable back and forth with respect to the processing position.
4. The laser processing apparatus according to any one of claims 1 to 3, wherein the suction device includes a blowout port that blows air toward a product surface between the processing position and the suction port.
5. The laser processing apparatus according to claim 4, wherein the suction device blows out warm air from the outlet.
6. An optical display device production system configured by bonding an optical member to an optical display component,
   A laminating device for laminating an optical member sheet larger than the display area of the optical display component to the optical display component,
   The cutting | disconnection which cut | disconnects the opposing part with the said display area of the said optical member sheet | seat in the said bonding body, and the excess part of the outer side of the said opposing part, and forms the said optical member of the magnitude | size corresponding to the said display area from the said optical member sheet | seat. With the device,
   In the vicinity of the cutting unit, the cutting unit is configured to irradiate a laser beam for cutting processing toward the cutting part between the facing part and the surplus part of the optical member sheet in the bonded body, and And a suction device for opening a suction port over the entire length of the cutting portion.
7. In the pasting body, it has a detection part which detects the outer periphery of the pasting surface of the optical member sheet and the optical display component,
   The optical display device production system according to claim 6, wherein the cutting portion is set along the outer peripheral edge.

Images