JP6203234B2 - Apparatus and method for continuously manufacturing an optical display device - Google Patents

Description

  The present invention relates to the manufacture of an optical display device, and more specifically, the rectangular panel is moved in a fixed state from the alignment with the optical function film to the bonding device, and bonded to the optical function film. The present invention relates to a continuous manufacturing apparatus and method for an optical display device.

  In the production of an optical display device such as a liquid crystal display device, a large number of sheets of optical functional film previously cut out from a band-shaped optical functional film outside the optical display device production process have been conventionally used. The individual pasting method has been used in which a rectangular panel brought into the manufacturing process and sequentially bonded to the rectangular panel brought into the manufacturing process are sequentially bonded. For such individual pasting method, in the manufacturing process of the optical display device, from the belt-shaped optical film laminate in which a plurality of sheet-like optical functional films are supported via a pressure-sensitive adhesive layer on the belt-shaped release film, Proposed a method to continuously manufacture optical display devices by separating only the normal sheet-like optical functional film that does not exist from the release film together with the adhesive layer, and pasting it with the rectangular panel through the adhesive layer Has been. A continuous manufacturing system of an optical display device that realizes such a method is called a “continuous bonding (RTP; roll-to-panel)” system, as distinguished from a system that realizes the individual bonding method described above.

  In the RTP system, it is ideal that the strip-shaped optical film laminate is fed in a state where the side edge portion thereof is parallel to the original feeding direction determined in the apparatus. May be sent in line. As a result of meandering or skewing of the optical film laminate, if the sheet-like optical functional film is sent to the bonding position with the rectangular panel with its posture deviating from the ideal posture, the sheet-like optical function It is necessary to bond the rectangular panel and the sheet-like optical functional film after correcting the posture of the rectangular panel according to the state of film displacement (also referred to as “positioning” in this specification).

  The correction (positioning) of the posture of the rectangular panel and the bonding with the corrected optical functional film have been conventionally performed as follows, for example. First, the rectangular panel is sent to a position for correcting the posture of the rectangular panel by the conveying means of the rectangular panel. As the conveying means, a roller conveyor that generally conveys a rectangular panel while bringing it into contact with a plurality of small-diameter rollers having rotating shafts extending in a direction orthogonal to the traveling direction thereof is employed. At the position for correcting the posture of the rectangular panel, the rectangular panel is fixed by, for example, suction or the like without being in contact with the conveying means, and the posture is detected in that state. The posture of the rectangular panel is corrected in accordance with the posture of the sheet-like optical functional film detected separately while being fixed without being in contact with the conveying means. After the correction of the posture, the rectangular panel is returned to the conveying means and the fixation is released. The rectangular panel is again sent to the bonding position by the conveying means, and is bonded to the sheet-like optical functional film separately sent to the bonding position by the bonding means having a pair of bonding rollers. The conveyance means of a rectangular panel and the bonding means of a rectangular panel and an optical function film are usually arranged in series on a straight line. For example, Patent Document 1 discloses a technique relating to conveyance of such a rectangular panel, posture correction, and bonding with an optical functional film.

  For example, in the technique described in Patent Document 1, the rectangular panel is returned to the conveying unit after the posture is detected and corrected, the fixation is released, and the rectangular panel is sent to the bonding position by the conveying unit. In this case, the rectangular panel is transported to the position of the pasting means without being fixed in contact with the transport means after correction, so that the rectangular panel is corrected to match the posture of the optical function film that is transported separately. There is a possibility that the posture is changed in the course of transport due to contact friction with the transport means or uneven transport speed. On the other hand, the sheet-like optical functional film is sent to the bonding means in the same posture as when the posture of the rectangular panel is corrected. Therefore, when pasted on the rectangular panel as it is, the sheet-like optical functional film deviates from the original position to be pasted. In this state, it is attached to the rectangular panel.

  Such misalignment between the rectangular panel and the sheet-like optical functional film is a problem in maintaining the quality of products in recent optical display devices that are becoming smaller, thinner, and narrower in frame. Become. In particular, in recent years, a higher emphasis on the accuracy of bonding between the rectangular panel and the optical functional film is required due to the trend of design emphasis.

  In this regard, Patent Document 2 discloses an optical member bonded body that can improve the accuracy in the optical axis direction of the optical display component to be bonded to the optical member when the optical display component and the optical member are bonded to each other. Has proposed a manufacturing device. In this apparatus, the position of the optical display component is adjusted in a state where the optical display component is sucked and held by the panel holding unit, and the aligned optical display component is held immediately before the pinching roller while being sucked by the panel holding unit. It is conveyed to. Considering FIG. 1 or FIG. 6 of Patent Document 2, the optical display component is moved on the roller conveyor after the suction holding is released immediately before the pressure roller, and the tip portion is inserted between the pressure rollers. After that, it is clamped by the clamping roller. Therefore, even in the apparatus of Patent Document 2, the attitude of the optical display component corrected to match the attitude of the optical member is the contact friction with the conveying means and the conveying speed during the period from the suction release to the nipping by the nipping roller. There may be a change in the process of conveyance due to unevenness.

  In addition, in the case of an apparatus configuration in which the rectangular panel is returned to the conveying means after its posture is detected and corrected, and is moved to the bonding position while moving on the plurality of small diameter rollers, the plurality of small diameter rollers are positioned Since it will be arrange | positioned on a straight line from a matching means to the front of a pair of bonding roller of a bonding means, while the fixed space for the arrangement | positioning becomes indispensable, a positioning means and a bonding means are connected in series. I had to layout it. Therefore, the conventional apparatus having such a configuration is required in the recent RTP system from the viewpoint of improving the production efficiency per installation area and the degree of freedom in replacing the conventional apparatus in units of some units. There was a limit to the degree of freedom in equipment layout.

Japanese Patent No. 4644755 Japanese Patent Laying-Open No. 2015-40914

The present invention can bond the optical functional film and the rectangular panel with higher accuracy by moving the rectangular panel to the bonding position with the optical functional film without changing the posture after correcting the posture. Another object of the present invention is to provide a continuous manufacturing apparatus and method for an optical display device.
Furthermore, the present invention eliminates the need to arrange the position for correcting the posture of the rectangular panel and the bonding position of the rectangular panel and the optical functional film in series on a straight line, so that the entire apparatus can be reduced in size and free. Another object is to provide a continuous manufacturing apparatus and method for an optical display device that can be laid out.

  In order to solve the above-described problems, in one aspect of the present invention, a sheet-like optical functional film is peeled from a release film by peeling the sheet-like optical functional film laminated on the strip-like release film in a peelable manner. An apparatus for continuously manufacturing an optical display device is provided by bonding a rectangular panel and a rectangular panel using a pair of bonding rollers. This apparatus is based on film detection means for detecting the attitude of a sheet-like optical functional film, panel detection means for detecting the attitude of a rectangular panel, and the detected attitude of the sheet-like optical functional film and the attitude of the rectangular panel. A deviation amount determining means for obtaining a deviation amount between the posture of the sheet-like optical functional film and the posture of the rectangular panel, and adjusting the posture of the rectangular panel to the posture of the sheet-like optical functional film based on the deviation amount, And a moving means for moving the rectangular panel so that a predetermined range of the front end portion is disposed between the pair of bonding rollers. The moving means fixes the rectangular panel so that the predetermined range protrudes at least until the predetermined range is arranged between the pair of laminating rollers according to the posture of the rectangular optical function film. Configured to be moved.

  In a preferred embodiment, the apparatus further includes an unlocking support means for supporting at least a part of the rectangular panel in response to the unlocking of the rectangular panel by the moving means. In another preferred embodiment, the moving means has suction fixing means for fixing the rectangular panel by suction.

  The moving means can be configured to move the rectangular panel from a direction orthogonal to the rotation axis of the pair of bonding rollers so as to arrange the predetermined range between the pair of bonding rollers. The predetermined range can also be arranged between the pair of bonding rollers by moving from a direction parallel to the rotation axis of the bonding roller.

  In another aspect, the present invention provides a sheet-like optical functional film laminated on a strip-like release film so as to be peeled from the release film, and the peeled sheet-like optical functional film and the rectangular panel are paired with each other. Provided is a method for continuously producing an optical display device by bonding using a bonding roller. This method is based on the steps of detecting the orientation of the sheet-like optical functional film, detecting the orientation of the rectangular panel, and detecting the orientation of the sheet-like optical functional film and the orientation of the rectangular panel. The step of obtaining the amount of deviation between the posture of the functional film and the posture of the rectangular panel, the step of adjusting the posture of the rectangular panel to the posture of the sheet-like optical functional film based on the amount of deviation, and the leading edge by moving the rectangular panel Arranging a predetermined range of the portion between the pair of bonding rollers. The rectangular panel is fixed with at least the predetermined range protruding between the step of matching the posture of the rectangular panel with the posture of the sheet-like optical functional film and the step of arranging the predetermined range between the pair of bonding rollers. Moving.

  In a preferred embodiment, the method further includes the step of supporting at least a portion of the rectangular panel in response to the unlocking of the rectangular panel. In another preferred embodiment, the rectangular panel is fixed by suction.

  The rectangular panel can move from a direction orthogonal to the rotation axis of the pair of bonding rollers so that the predetermined range is disposed between the pair of bonding rollers. The predetermined range may be arranged between the pair of bonding rollers by moving from a direction parallel to the pair.

1 is a schematic diagram illustrating an overall configuration of a continuous manufacturing apparatus according to an embodiment of the present invention. It is a conceptual diagram which expands and shows the alignment part which aligns a sheet-like optical function film, and a rectangular panel, and the bonding part which bonds. It is a schematic diagram for demonstrating operation | movement of the moving means which aligns a rectangular panel and moves to a bonding part, and shows the form which supports a rectangular panel from the downward direction. It is a conceptual diagram which shows the example of the suction fixing means of a shape different from the suction fixing means shown by FIG. It is a schematic diagram for demonstrating the operation | movement which introduce | transduces a rectangular panel into a bonding part from the direction different from the direction shown in FIG. It is a schematic diagram for demonstrating operation | movement of the moving means which aligns a rectangular panel and moves to a bonding part, and shows the form which supports a rectangular panel from upper direction. The flowchart of the process of position alignment and bonding is shown.

Embodiments of the present invention will be described below in detail with reference to the drawings. The present invention is not limited to these embodiments.
FIG. 1 is a conceptual diagram of the overall configuration of an apparatus 1 for continuously manufacturing an optical display device according to the present invention. In the continuous manufacturing apparatus 1, the sheet-like optical function film F1 that is peelably laminated on the strip-like release film F3 via the adhesive layer F2 is peeled off from the release film F3 and peeled. By bonding the film F1 and the rectangular panel W using a pair of bonding rollers 206, the optical display device P can be continuously manufactured. The operation of each part of the continuous manufacturing apparatus 1 can be controlled by the control device 500. In the present invention, the sheet-like optical functional film F1 can be a polarizing film, an antireflection film, a retardation film, a light diffusion film, a brightness enhancement film, etc., and the rectangular panel W can be a liquid crystal panel, an organic EL panel, or the like. can do.

  An optical film laminate F in which a plurality of sheet-like optical functional films F1 are continuously laminated in the length direction on the strip-like release film F3 can be formed as follows. First, the optical film laminate F ′ is unwound and conveyed from the roll 110 of the optical film laminate F ′ in which the belt-like optical functional film F <b> 1 ′ is laminated via the adhesive layer F <b> 2 on the strip release film F <b> 3. Next, in the middle of conveyance, a cutting line CL that reaches the adhesive layer F2 is put in the width direction of the optical film laminate F ′ in the cutting unit 150 having a cutter with respect to the optical film laminate F ′ (“half-cut” Also called.). In another embodiment, the optical film laminated body in which the cut line CL was previously formed can also be used. In this case, the cutting unit 150 is not necessary.

  The optical film laminates F and F ′, if necessary, eliminate the feed rollers 130 and 170 for feeding the film, the dancer rollers 140 and 180 for adjusting the film feed speed, and the sheet-like optical functional film having defects. It is sent to the bonding part 200 via a part (not shown).

  On the other hand, a rectangular panel W, which is an adherend to which the sheet-like optical functional film F1 is bonded, is fed one by one from a magazine 280 in which a plurality of rectangular panels W are stored, for example, and is a roller conveyor having a plurality of small-diameter rollers 302, for example. It is conveyed by conveyance means 300 such as. The rectangular panel W is sent to the bonding unit 200 after the posture is detected by the positioning unit 320 and the posture is corrected (positioned) according to the state of deviation of the sheet-like optical functional film F1. In the bonding part 200, the sheet-like optical functional film F1 peeled off from the release film F3 together with the adhesive layer F2 by the peeling means 202 is bonded to the rectangular panel W by a pair of bonding rollers 206. The release film F3 from which the sheet-like optical functional film F1 has been peeled is wound up by the winding roller 210.

  FIG. 2 is a partial enlarged view conceptual diagram of the apparatus 1 including the bonding unit 200 and the alignment unit 320 in FIG. 1, and is a diagram for explaining a method of aligning the sheet-like optical functional film F1 and the rectangular panel W. It is. FIG. 3 is an enlarged view of the bonding unit 200 and the alignment unit 320 in FIG. 2, and a moving unit 400 that aligns the rectangular panel W in the alignment unit 320 and moves it to the bonding unit 200. It is a schematic diagram for demonstrating operation | movement. In FIG. 3, the processing proceeds from the right (a) to the left (e) in accordance with the expressions of FIGS. FIG. 7 is a flowchart of the process of positioning and bonding the sheet-like optical functional film and the rectangular panel, and the step numbers of the processes shown in FIG. 7 are indicated in the corresponding portions in the following description.

  As shown in FIG. 2, the sheet-like optical functional film F1 on the optical film laminate F sent toward the bonding unit 200 is, for example, a film detection including a straight position detection unit 222 and an edge detection unit 224. The posture is detected by the means 220. In the continuous production apparatus 1, the side edge of the optical film laminate F is called the original feed direction of the optical film laminate F (hereinafter referred to as “film feed direction”), and this direction is the x direction. In the plane of the film, the direction perpendicular to the x direction is the y direction.) It is ideal that the film is sent in a state parallel to the film. The film detection means 220 can detect the posture of the sheet-like optical functional film F1 sent in a meandering or skewed state.

  As for the posture of the sheet-like optical functional film F1, for example, images of the front end portion and the side edge portion of the sheet-like optical functional film F1 are acquired by the film detection means 220 such as the straight position detection means 222 and the edge detection means 224 (FIG. 7). S10, the same applies hereinafter), and the distance and angle deviation between the position of the sheet-like optical functional film F1 in the acquired image, the reference position of the leading end, and the film feed direction are obtained (S12). The image data acquired by the film detection unit 220 is transmitted to the control device 500, and the shift amount is obtained by the information processing unit 510 of the control device 500. The obtained deviation amount is stored in the storage unit 520 of the control device 500. The configuration and arrangement of the film detection means 220 are not limited to the configuration and position shown in FIG. 2, and may be any configuration and position that can accurately determine the posture of the optical film laminate F1. After the amount of deviation is determined, the sheet-like optical functional film F1 is peeled off from the release film F3 by the peeling means 202, and the head is positioned so that the tip portion is disposed between the pair of bonding rollers 206 (S14). Is done.

  On the other hand, the rectangular panel W sent from the magazine, like the optical film laminate F, is referred to as the original feeding direction of the rectangular panel W (hereinafter referred to as “panel feeding direction”), and this direction is the x direction. In the plane of the panel, the direction perpendicular to the x direction is defined as the y direction) (see FIG. 3A). For example, the alignment unit 320 including the panel detection unit 322 can detect the posture of the rectangular panel W sent in a shifted state. The posture of the rectangular panel W is performed by using, for example, alignment marks that are stylized patterns arranged on the rectangular panel W in order to facilitate alignment between the rectangular panel W and other members. Can do. As for the posture of the rectangular panel W, an image of the alignment mark attached to the rectangular panel W is acquired by the panel detecting means 322 (S18), and the position of the acquired alignment mark and the rectangular panel W are sent in the panel feed direction. Sometimes it is obtained as the distance and angle deviation from the reference position where the alignment mark exists (S20). The acquired image data of the alignment mark is transmitted to the control device 500, and the shift amount is obtained by the information processing unit 510 of the control device 500. The obtained deviation amount is stored in the storage unit 520 of the control device 500. In one embodiment, the alignment mark is used as a reference for detecting the posture of the rectangular panel W, but the alignment mark is not limited to this. For example, as in the optical film laminate F1, the position of the end and the panel feed The posture may be detected using a distance and an angle with the direction.

  In order to bond the sheet-like optical functional film F1 and the rectangular panel W accurately in the laminating apparatus 200, after detecting the posture of the sheet-like optical functional film F1 and the posture of the rectangular panel W, the postures of the two coincide with each other. It is necessary to let Therefore, in the continuous manufacturing apparatus 1, first, based on the detected posture of the sheet-like optical functional film F1 and the posture of the rectangular panel W, the posture of the sheet-like optical functional film F1 and the posture of the rectangular panel W are determined. It is preferable to obtain a divergence amount between them (S22), and to match the posture of the rectangular panel W with the posture of the optical function film F1 based on the divergence amount (S24).

  The continuous manufacturing apparatus 1 obtains a deviation amount between the posture of the sheet-like optical functional film F1 and the posture of the rectangular panel W based on the detected posture of the sheet-like optical functional film F1 and the posture of the rectangular panel W. The information processing unit 510 has a divergence amount determination unit 512 for the purpose. The divergence amount determining means 512 can obtain the divergence amount as follows as an example (S22). First, from the image of the sheet-like optical functional film F1 detected by the film detection means 220, the distance in the x direction (x1, x2) between the two points at the tip and the reference position that the tip should reach, Further, the y-direction distance (y1, y2) between the two points on one side edge and the film feed direction is obtained. Next, the angle θ1 from the film feeding direction of the optical film laminate F1 is obtained using (y1, y2) and the distance between two points on one side edge. On the other hand, from the alignment mark image of the rectangular panel W detected by the panel detecting means 322, the x and y direction distances (x3, y3) (x4) between the two alignment marks and the two reference positions that the alignment mark should reach. , Y4). Next, an angle θ2 between a line connecting the two detected alignment marks and a line connecting the two reference positions is obtained. Finally, the amount of deviation between the posture of the optical film laminate F1 and the posture of the rectangular panel W is determined using x1 to x4, y1 to y4, θ1, and θ2.

  The posture of the rectangular panel W is aligned with the posture of the sheet-like optical functional film F1 based on the deviation amount obtained by the deviation amount determining means 512 (S24). The continuous manufacturing apparatus 1 includes a moving unit 400. Under the control of the control device 500, the moving unit 400 moves the rectangular panel W in a direction away from the panel transport unit 300 (z direction orthogonal to the x direction and the y direction) while the rectangular panel W is fixed (S16). The alignment (S24) can be performed by changing the posture of the rectangular panel W without contacting the roller 302 of the panel transport unit 300 (see FIG. 3B). The moving means 400 needs to move the rectangular panel W upstream or downstream (x direction) in the panel feed direction, move in the direction orthogonal to the panel feed direction (y direction), or with respect to the feed direction. It is configured to be able to rotate an arbitrary angle (θ). Furthermore, as will be described later, the moving unit 400 conveys the rectangular panel W from the alignment unit 320 to a position where the tip of the rectangular panel W is disposed between the pair of bonding rollers 206 (S26). For example, a mechanism such as a rail and a motor is provided. As these mechanisms, mechanisms well known to those skilled in the art can be appropriately employed.

  The alignment between the rectangular panel W and the sheet-like optical functional film F1 is not limited to the above method. For example, as proposed by the applicant of the present application in Patent Document 1, the progress of the rectangular panel is described. You may perform on the basis of the centerline extended in the direction and the centerline extended in the advancing direction of the optical function film sent to the bonding part.

  The moving means 400 has a fixing means for fixing the rectangular panel W. In one embodiment, the fixing means is preferably an adsorption fixing means 402 that can fix the rectangular panel W in an adsorbed state. The adsorption fixing means 402 can adsorb and fix the lower surface or the upper surface of the rectangular panel W by vacuum adsorption in the adsorption unit 404 under the control of the control device 500.

  As shown in FIG. 3B, the rectangular panel W is fixed so that a predetermined range P at the tip end portion of the rectangular panel W protrudes forward from the most distal portion 406 of the suction fixing means 402. The position where the suction fixing means 402 sucks the rectangular panel W may be closer to the rear of the rectangular panel W so that the predetermined range P can be secured. As will be described later, the predetermined range P is a portion disposed between the bonding rollers 206 before the optical film laminate F1 and the rectangular panel W are bonded by the pair of bonding rollers 206. At least a part of the portion is sandwiched between the pair of bonding rollers 206. The predetermined range P is 50 mm to 150 mm from the front end of the rectangular panel W, and preferably 60 mm to 100 mm. If the predetermined range P is larger than 150 mm, the rectangular panel W may hang down due to its own weight, and may collide with the inside of the equipment during transportation or may break. If the predetermined range P is smaller than 50 mm, the rectangular panel W cannot be reliably clamped by the bonding roller 206 described later.

  The shape of the suction surface of the suction fixing means 402 in contact with the rectangular panel W is not limited to the rectangle as shown in FIG. 3, but may be a digit shape as shown in FIG. FIG. 4A shows the suction fixing means 402 used when the rectangular panel W is transported starting from the short side, and FIG. 4B is a rectangle starting from the long side. The suction fixing means 402 used when the panel W is conveyed is shown.

  Each of the suction fixing means 402 has a central portion extending in the transport direction and a plurality of arm portions protruding from the central portion in a direction crossing the transport direction. A plurality of suction portions 404 are provided at appropriate positions of the center portion and the arm portion. The suction fixing unit 402 can lift the arm portion from below the small diameter roller 302 so as to pass between the small diameter rollers 302 and suck the rectangular panel W. The rectangular panel W can be supported more stably by using such suction fixing means capable of widely sucking the entire surface of the rectangular panel W. Also in the suction fixing means 402 having such a shape, the predetermined range P of the front end portion of the rectangular panel W protrudes forward from the most distal portion 406 of the suction fixing means 402 as in the case of the suction fixing means 402 shown in FIG. Thus, the rectangular panel W is fixed.

  The fixing means for fixing the rectangular panel W is not limited to the suction fixing means 402. For example, upper and lower clamping means for clamping from both the upper and lower surfaces of the rectangular panel W and side clamping means for clamping the side surfaces of the rectangular panel W from opposite directions can also be used. Even when the fixing means such as the upper and lower clamping means and the side clamping means are used, the rectangular panel W is fixed so that the predetermined range P protrudes forward from the most distal end portion of the fixing means.

  The rectangular panel W aligned (S24) so as to match the attitude of the optical film laminate F1 is then maintained in the aligned attitude while being fixed to the moving means 400 under the control of the control device 500. In the state where it was done, it is conveyed (S26) by the bonding part 200 (refer FIG.3 (c)). In the present embodiment, it is described that the alignment is performed as it is after the alignment unit 320 detects the posture of the rectangular panel W. However, the alignment of the rectangular panel W may be performed while the rectangular panel W is conveyed to the bonding unit 200 by the moving unit 400 after the posture is detected.

  The rectangular panel W conveyed to the bonding unit 200 by the moving unit 400 (S26) remains fixed by the moving unit 400, and the predetermined range P of the tip portion is a pair of bonded by the control of the control device 500. It arrange | positions between the rollers 206 (S28) (refer FIG.3 (d)). The moving direction when the predetermined range P of the front end portion of the rectangular panel W is arranged between the pair of bonding rollers 206 is not limited. In the embodiment of FIG. 3, the moving unit 400 moves the rectangular panel W from the direction orthogonal to the rotation axis of the pair of bonding rollers 206, and arranges the predetermined range P between the pair of bonding rollers 206. be able to.

  In another embodiment, as shown in FIG. 5, the movement unit 400 detects the posture of the rectangular panel W and aligns it (see FIG. 5A), and then attaches the rectangular panel W to a pair of pasting panels. The predetermined range P can be disposed between the pair of bonding rollers (see FIG. 5C) by moving the roller from the direction parallel to the rotation axis of the combining roller 206 (see FIG. 5B). If the structure which moves the rectangular panel W in parallel with the rotating shaft of a pair of bonding roller 206 is employ | adopted, compared with the structure which moves from the direction orthogonal to the rotating shaft of a pair of bonding roller 206, the continuous manufacturing apparatus 1 of FIG. The overall length can be shortened and a more free device layout can be adopted.

  The rectangular panel W in which the predetermined range P of the front end portion is disposed between the pair of bonding rollers 206 by the moving unit 400 is converted into a sheet-like optical functional film by the pair of bonding rollers 206 operated by the control of the control device 500. It is clamped (S30) from the upper and lower surfaces together with the tip portion of F1 (see FIGS. 3D and 3E). When the rectangular panel W is sandwiched, the suction fixing means 402 releases the suction of the rectangular panel W (S32). The fixation and release by the suction fixing means 402 may be performed before the rectangular panel W is sandwiched between the pair of bonding rollers 206. In this case, the suction and fixing means 402 is a pair of the rectangular panel W after the fixation is released. The rectangular panel W can be supported in an unfixed state until it is sandwiched between the pasting rollers 206. The timing at which the fixation by the suction fixing unit 402 is released is not particularly limited as long as the posture of the rectangular panel W does not change between the release and the clamping by the bonding roller 206.

  It is preferable that the fixing support means 410 is disposed at a position corresponding to at least the rear end portion of the rectangular panel W in which the predetermined range P is disposed between the pair of bonding rollers 206. The support unit 410 at the time of unlocking is supported only by the pair of bonding rollers 206 by supporting the rectangular panel W in a state of being sandwiched between the pair of bonding rollers 206 and separated from the suction fixing unit 402 from below. It is possible to prevent damage to the rectangular panel W that may occur when it is supported. The support means 410 at the time of unlocking may be arranged in a plurality in the feeding direction of the rectangular panel W so as to support not only the rear end portion of the rectangular panel W but also the entire lower surface except the predetermined range P of the front end portion. Alternatively, the rectangular panel W may be arranged so as to support only the intermediate portion in the feed direction.

  When the fixing release support means 410 is provided, the rectangular panel W can be supported by the lower roller of the pair of bonding rollers 206 and the fixing release support means 410. The panel W can be separated from the rectangular panel W before being sandwiched by the bonding roller 206. In the case where the suction fixing means 402 supports the rectangular panel W in an unfixed state until the rectangular panel W is fixed by the pair of bonding rollers 206 after the fixation of the rectangular panel W by the suction fixing means 402 is released, the suction fixing means Reference numeral 402 functions as the support means 410 at the time of releasing the fixation.

  For example, a small-diameter roller similar to that used for the conveyance unit 300 can be used as the support unit 410 at the time of unlocking, but is not limited thereto, and for example, faces the rectangular panel W from the width direction. Or a pair of support rods arranged so as to support the lower surface of the rectangular panel W, or a plurality of wheels juxtaposed in the width direction so as to contact the lower surface of the rectangular panel W.

  The unlocking support means 410 can be placed in a fixed position in advance, or only when it is necessary to support the rectangular panel W, and appears when the rectangular panel W does not need to be supported. It can also be configured to retreat to any position.

  The rectangular panel W is transported to the bonding unit 200 separately from the rectangular panel W, and bonded to the sheet-like optical functional film F1 peeled off from the release film F3 by the peeling means 202 via the adhesive layer F2 (S36). (See FIG. 3E). Bonding is performed from above and below by a pair of bonding rollers 206 (S30) with the front end of the sheet-like optical functional film F1 being superimposed on a predetermined position of the front portion of the rectangular panel W, and the pair of bonding rollers 206. 3 are sequentially performed from the front to the rear of the rectangular panel W by rotating in opposite directions to each other in the direction indicated by the arrow in FIG. The optical display device PU that has been pasted is sent in a direction away from the pasting unit 200 by the conveying means 300.

  In FIG. 3, the rectangular panel W is adsorbed from the lower surface by the adsorbing and fixing means 402, and in the bonding unit 200, a configuration in which the sheet-like optical functional film F1 is bonded to the upper surface of the rectangular panel W is shown. However, as shown in FIG. 6, the rectangular panel W is sucked from the upper surface by the suction fixing means 402, and the sheet-like optical functional film F <b> 1 is bonded to the lower surface of the rectangular panel W in the bonding unit 200. May be. In addition, in FIG. 6, only the schematic diagram seen from the side is shown.

  In this embodiment, the rectangular panel W (see FIG. 6A) conveyed to the alignment unit 320 can be sucked and lifted from the upper surface by the suction fixing means 402 (see FIG. 6B). The rectangular panel W whose position is detected in the lifted state and aligned is conveyed toward the bonding unit 200 while being fixed to the suction fixing means 402 and being lifted (FIG. 6C). reference). The front end portion P of the rectangular panel W is disposed between the pair of bonding rollers 206, the rectangular panel W is sandwiched by the pair of bonding rollers 206, and the fixation by the suction fixing means 402 is released (FIG. 6D )), The rectangular panel W sandwiched from above and below by the pair of bonding rollers 206 and the sheet-like optical functional film F1 are sequentially bonded from the front to the rear by the pair of bonding rollers 206 (FIG. 6 ( e)).

  In still another embodiment, the rectangular panel W is sucked and fixed from the upper surface, and is moved from a direction parallel to the rotation axis of the pair of bonding rollers 206 as shown in FIG. It can comprise so that it may arrange | position between the bonding rollers.

DESCRIPTION OF SYMBOLS 1 Continuous manufacturing apparatus F, F 'Optical film laminated body F1 Sheet-like optical function film F2 Adhesive layer F3 Release film W Rectangular panel 110 Roll 150 of an optical film laminated body Cutting part 200 Pasting part 202 Peeling means 206 Pasting roller 220 Film detecting means 222 Straight running position detecting means 224 Edge detecting means 300 Conveying means 302 Roller 320 Positioning unit 322 Panel detecting means 400 Moving means 402 Suction fixing means 404 Suction part 406 Most advanced part 410 Unsupporting support means 500 Controller 510 Information Processing unit 512 Deviation amount determination means 520 Storage unit

Claims (6)

A sheet-like optical functional film laminated in a peelable manner on a strip-shaped release film is peeled off from the release film, and the peeled sheet-like optical functional film and a rectangular panel are attached using a pair of bonding rollers. An apparatus for continuously manufacturing an optical display device by combining,
Film detection means for detecting the posture of the sheet-like optical functional film;
Panel detection means for detecting the orientation of the rectangular panel;
Based on the detected posture of the sheet-like optical functional film and the posture of the rectangular panel, a deviation amount determining means for obtaining a deviation amount between the posture of the sheet-like optical functional film and the posture of the rectangular panel;
While adjusting the posture of the rectangular panel to the posture of the sheet-like optical functional film based on the deviation amount, the predetermined range of the tip portion of the rectangular panel is arranged between the pair of bonding rollers, Moving means for moving the rectangular panel;
With
The moving means adjusts the rectangular panel to at least the predetermined range until the predetermined range is arranged between the pair of bonding rollers by matching the posture of the rectangular panel with the posture of the sheet-like optical functional film. The rectangular panel is moved between the pair of bonding rollers so that the predetermined range is moved from the side of the pair of bonding rollers and is disposed between the pair of bonding rollers. An apparatus characterized by being moved from a direction parallel to the rotation axis of the laminating roller .   The apparatus according to claim 1, further comprising a fixing release support unit that supports at least a part of the rectangular panel in response to releasing the fixing of the rectangular panel by the moving unit.   The apparatus according to claim 1, wherein the moving unit includes a suction fixing unit that fixes the rectangular panel by suction. A sheet-like optical functional film laminated in a peelable manner on a strip-shaped release film is peeled off from the release film, and the peeled sheet-like optical functional film and a rectangular panel are attached using a pair of bonding rollers. A method of continuously manufacturing an optical display device by combining,
Detecting the posture of the sheet-like optical functional film;
Detecting the posture of the rectangular panel;
Based on the detected orientation of the sheet-like optical functional film and the orientation of the rectangular panel, obtaining a deviation amount between the orientation of the sheet-like optical functional film and the orientation of the rectangular panel;
Based on the amount of deviation, the step of adjusting the posture of the rectangular panel to the posture of the sheet-like optical functional film;
A step of moving the rectangular panel to dispose a predetermined range of the tip portion between the pair of bonding rollers;
Including
The rectangular panel protrudes at least between the step of matching the posture of the rectangular panel with the posture of the sheet-like optical functional film and the step of arranging the predetermined range between the pair of bonding rollers. Fixed and moved in a state, and the predetermined range moves from the side of the pair of pasting rollers and is arranged between the pair of pasting rollers on the rotation shaft of the pair of pasting rollers. A method characterized by moving from parallel directions . 5. The method of claim 4 , further comprising supporting at least a portion of the rectangular panel in response to unlocking the rectangular panel. The method according to claim 4 or 5 , wherein the fixing of the rectangular panel is performed by adsorption.

Images