JP2004021051A - Method and apparatus for press-bonding flexible board to liquid crystal panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for press-bonding a flexible board to a liquid crystal panel by which the stuck state of an ACF (Anisotropic Conductive Film) tape stuck to an FPC (Flexible Printed Circuit) is optically detected in the stage of temporary press bonding and a defective product is eliminated in the stage of temporary press bonding to lower rejection rate and the defective product can be restored and used without discarding. <P>SOLUTION: The ACF tape 12 is stuck to the FPC 7, and in a temporary press bonding position, alignment of the FPC 7 and the alignment mark of a liquid crystal panel 1, temporary press bonding of the FPC 7 to the panel 1 and checking of the stuck state of the ACF tape 12 are carried out. When the stuck state is good, the good item is transported to a concluding press bonding step and subjected to concluding press bonding, and when the stuck state is bad, the defective is drawn into a discharge region. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method and an apparatus for crimping a flexible substrate to a liquid crystal panel.
[0002]
[Prior art]
As shown in FIG. 8, a liquid crystal panel 1, which is frequently used as a display of an electronic device, has a first glass substrate 2 and a second glass substrate 3 bonded together, a liquid crystal is sealed therebetween, and a semiconductor is surrounded by the liquid crystal. An element 4 is mounted, electrodes 5 are formed in a row at a narrow pitch at the ends, and dot-like alignment marks 6 are formed at both ends of the electrodes 5.
[0003]
The flexible substrate 7 of the driver connected to the electrodes 5 of the liquid crystal panel 1 is provided with electrodes 8 and 9 at both ends as shown in FIG. 7, and the electrode 8 on the side connected to the electrodes 5 of the liquid crystal panel 1 is A predetermined length of the electrode 8 is exposed from the protective portion 10 under the same condition as the first electrode 5, and annular alignment marks 11 are provided at both ends of the electrode 8 at intervals corresponding to the alignment marks 6 of the liquid crystal panel 1. A hole 14 for fixing is provided at a position opposite to 11.
[0004]
The flexible substrate 7 includes a flexible printed circuit board (FPC), a tape carrier package (TCP), a tape automated bonding component (TAB component), and the like. Called FPC7.
[0005]
As a method of connecting the FPC 7 to the electrode 5 of the liquid crystal panel 1, a method using an anisotropic conductive tape (hereinafter, referred to as an ACF tape) 12 is generally used. The ACF tape 12 is an adhesive tape containing conductive particles. As shown in FIG. 4, a release paper 13 is adhered to one surface of the ACF tape 12 for easy handling.
[0006]
Conventionally, the method of attaching the FPC 7 to the liquid crystal panel 1 using the ACF tape 12 is as follows. First, the ACF tape 12 peeled off from the release paper 13 is attached to the liquid crystal panel 1 side, and then the FPC 7 is pressed on the ACF tape 12. The method has been adopted. At this time, since the ACF tape 12 used had a width corresponding to the overlapping amount of the liquid crystal panel 1 and the FPC 7, a portion of the electrode 8 of the FPC 7 mounted by pressure bonding was exposed outside the liquid crystal panel 1. I do.
[0007]
If a part of the electrode 8 has a bare part as described above, the bare part causes disconnection or corrosion, and the occurrence rate of defective products increases.
[0008]
Conventionally, the exposed portion of such an electrode is coated with a fluororesin or the like and then cured by UV irradiation to mask the exposed portion. However, in such a method, a fluororesin or the like is applied. A separate curing step is required, which not only causes an increase in cost but also lowers efficiency.
[0009]
It is conceivable to use a wide ACF tape 12 to cover the exposed portions of the electrodes as described above. However, since the portion of the ACF tape 12 protruding from the liquid crystal panel 1 does not adhere to the FPC 7 side, the wide ACF tape 12 is actually used. Tape 12 cannot be used.
[0010]
Also, a plurality of sets of electrodes in the conventional liquid crystal panel 1 are provided at appropriate intervals, and an FPC is connected for each electrode group, and is used for crimping such a liquid crystal panel and the FPC. The length of the ACF tape 12 is one continuous one long along the side where the electrode 8 of the liquid crystal panel is provided. For this reason, the ACF tape 12 is stuck between the gaps between the FPCs 7, but the ACF tape 12 between the FPCs 7 is an unnecessary part.
[0011]
Therefore, in the conventional crimping method, the extra use of the ACF tape 12 is not only uneconomical, but also the crimping tool is attached to the exposed portion of the ACF tape 12 at the time of the temporary crimping and the final crimping. However, there is a problem that it is necessary to interpose a fluorine resin sheet so as not to adhere, for example, to sandwich a fluororesin sheet, and such a process is troublesome.
[0012]
In addition, in order to connect the FPC 7 to the liquid crystal panel 1 and assemble it correctly as a display, the ACF tape 12 must be correctly adhered on the electrodes at the ends, and the release paper 13 must be completely removed from the ACF tape 12 before the application. It is necessary to inspect the state of attachment of the ACF tape 12 to the liquid crystal panel 1, and visual inspection by an operator of this inspection is not only inefficient but also easy to make an inspection mistake. Japanese Patent Application Laid-Open No. 9-34372 proposes a method for optically inspecting the state of the ACF tape 12 attached to the liquid crystal panel 1.
[0013]
In this inspection method, the ACF tape adhered to the glass substrate of the liquid crystal panel is recognized by irradiating transmitted light from the glass substrate side, and the pass / fail is determined based on the luminance histogram, but the ACF tape is adhered to the FPC 7. There was no means for automatically inspecting the state of application of the ACF tape.
[0014]
As described above, the method of attaching the ACF tape 12 to the liquid crystal panel 1 and crimping the FPC 7 on the ACF tape 12 has several problems as described above. The process has been changed such that the ACF tape 12 is attached first and the FPC 7 is attached to the liquid crystal panel 1.
[0015]
[Problems to be solved by the invention]
By the way, in order to attach the ACF tape 12 to the FPC 7 first, in the step of attaching the ACF tape 12, the ACF tape 12 is half-cut while leaving the release paper 13. Occurs. As a result, a state in which the ACF tape 12 is not adhered (particularly, both ends) occurs, and there is a problem that a defective product is generated in the product after crimping.
[0016]
Therefore, an object of the present invention is to optically detect the affixed state of the ACF tape affixed to the FPC at the stage of temporary compression, and to eliminate defective products at the stage of temporary compression, thereby lowering the defective rate, A method of crimping a flexible substrate onto a liquid crystal panel, which can be used without repairing it, and can perform positioning, temporary crimping, and inspection of the ACF tape attachment state in the same process, thereby improving work efficiency. And a device.
[0017]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention of the method is a method of crimping a flexible substrate to a liquid crystal panel using an ACF tape, wherein an ACF tape is attached to the flexible substrate, and a position where the flexible substrate and the liquid crystal panel are temporarily crimped. Thus, a configuration is employed in which the alignment of the alignment mark of the flexible substrate and the alignment mark of the liquid crystal panel, the provisional pressure bonding of the flexible substrate and the liquid crystal panel, and the inspection of whether the ACF tape is adhered or not are performed.
[0018]
In addition, the invention of the apparatus is such that the suction tool of the transfer mechanism for sucking and holding the flexible substrate and intermittently transferring the movable substrate is movable, and the stop positions of the suction tool are set to the receiving position of the flexible substrate and the ACF tape attached to the flexible substrate. The liquid crystal panel is set at a position, a temporary press-fitting position between the flexible substrate and the liquid crystal panel, and a discharge position for defective products. A temporary crimping unit for temporarily crimping the flexible substrate and the liquid crystal panel with the suction tool is arranged. At this temporary crimping position, the alignment mark between the flexible substrate and the liquid crystal panel is aligned by moving the suction tool and moving the panel table. After the temporary bonding of the flexible substrate and the liquid crystal panel, It is obtained by employing the configuration of arranging the testing means for determining the acceptability of the joining state of the tape optically.
[0019]
The above-mentioned transfer mechanism mounts four suction tools at equal intervals at the lower part of the circular index table, and rotates the index table intermittently by an angle that matches the arrangement interval of the suction tools. The tool is mounted so as to move up and down with respect to the index table, and the stop position of each suction tool is determined by the receiving position of the FPC, the attaching position of the ACF tape to the FPC, and the temporary crimping position of the FPC and the liquid crystal panel. It is set to the discharge position for non-defective products.
[0020]
At the receiving position of the FPC, a transfer table for sucking the FPCs on the stacked or arranged pallets and supplying the FPC to a suction tool stopped at the receiving position is arranged.
[0021]
Further, the ACF tape cutting and feeding mechanism disposed at the ACF tape attaching position is disposed immediately below the suction tool, and is located at the tape entry side of the backup base supporting the ACF tape with the release paper down, The cutter that cuts the ACF tape while leaving the release paper, and the suction tool that sucks the FPC, attaches the ACF tape to the FPC as it descends. When the backup base descends, it moves closer to the lower part of the suction tool from the standby position and is attached to the FPC. And a peeling roller for peeling off the release paper from the ACF tape.
[0022]
The temporary pressure bonding unit disposed at the temporary pressure bonding position between the FPC and the liquid crystal panel sucks and holds the liquid crystal panel on the upper surface, and is located below the panel table which can be moved in the X, Y, Z, and θ directions and the suction tool. When the panel table moves forward, the liquid crystal panel is formed of a transparent support that supports the lower part of the FPC attachment portion.
[0023]
Inspection means arranged at this temporary crimping position arranges a light source for irradiating transmitted light on the upper part of the pedestal, checks the alignment mark of the FPC and the alignment mark of the liquid crystal panel below the pedestal, and performs both alignments. A CCD camera for photographing and inspecting the state of ACF tape attachment around the mark is installed, and an image processing device for processing the image of the CCD camera is formed. The position of the alignment mark of the FPC and the alignment mark of the liquid crystal panel The alignment is performed by checking the alignment mark of the FPC, detecting the alignment mark of the liquid crystal panel, and moving the panel table based on the detection signal so that the alignment mark of the liquid crystal panel matches the alignment mark of the FPC. .
[0024]
In addition, the inspection of the ACF tape attachment state is performed by photographing the periphery of the alignment mark with a CCD camera and determining whether or not the mark is a reference point by an image processing device. Adjust to
[0025]
Next, based on the image captured by the CCD camera, the image processing device sorts the luminance of 256 gradations into two luminances with the reference luminance as a boundary, binarizes the gray search image (black and white), and The inspection frame is set, and the spot area and the number of clumps of the conductive particles reflected in a spot shape are compared with a reference to determine the presence or absence of the ACF tape.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the same reference numerals are used for the liquid crystal panel, the FPC and the ACF tape as those of the related art.
[0027]
FIG. 1 is a plan view of a device for crimping the FPC 7 to the liquid crystal panel 1, and FIG. 2 shows a structure of a temporary crimping portion in this device.
[0028]
In the figure, a transfer mechanism 21 for intermittently transferring the FPC 7 has four suction tools 23 attached at equal intervals at a lower part of a circular index table 22 at peripheral positions. The suction tool 23 is intermittently rotated by an angle corresponding to the arrangement interval, and each suction tool 23 is provided with a suction head 24 and a suction pad 25 on the lower surface to hold the FPC 7 horizontally by suction. It is attached to the support base 26 of the table 22 so as to move up and down by the elevating shaft 27. Although not shown, up and down movement of a predetermined stroke is given by appropriate driving means such as a cylinder or a cam connected to the elevating shaft 27. .
[0029]
The stop positions of the suction tools 23 are sequentially set to a receiving position a of the FPC 7, an affixing position b of the ACF tape 12 to the FPC 7, a temporary pressing position c between the FPC 7 and the liquid crystal panel 1, and a discharging position d of a defective product. Have been.
[0030]
At the receiving position a of the FPC 7, a transfer table 28 for sucking the FPCs 7 on the stacked or arranged pallets and supplying the FPCs 7 to the suction tool 23 stopped at the receiving position a moves forward and backward with respect to the suction tool 23. It is arranged to move.
[0031]
An ACF tape cutting / supplying mechanism 29 for attaching the ACF tape 12 to the FPC 7 is arranged at a position b where the ACF tape 12 is attached to the FPC 7.
[0032]
As shown in FIG. 4, the ACF tape cutting / supplying mechanism 29 is disposed immediately below the suction tool 23 that stops at the attaching position b, and supports the ACF tape 12 with the release paper 13 down, and is capable of moving up and down. And a cutter 31 which is positioned above the ACF tape 12 on the tape entry side of the backup base 30 so as to be able to move up and down and cut the ACF tape 12 while leaving the release paper 13, and a lower surface of the ACF tape 12 immediately below the cutter 31. A support table 32 for supporting, a fixed position guide roller 33 positioned on the tape entry side of the support table 32 to support the lower surface of the ACF tape 12, and waiting at a position on the tape exit side with respect to the backup base 30; When the suction tool 23 sucking the FPC 7 is lowered, the ACF tape 12 is attached to the FPC 7 and the backup base 30 is lowered. Wearing approaching moving from the standby position at the bottom of the tool 23, and is formed with a pair of upper and lower peeling rollers 34 and 35 from the ACF tape 12 Tagged bonded peeled off release paper 13 on FPC 7.
[0033]
In the temporary press-fitting position c, the liquid crystal panel 1 is moved forward and backward below the suction tool 23 to be stopped, and the temporary press-fitting unit 37 for temporarily pressing the FPC 7 and the liquid crystal panel 1 with the suction tool 23 via the ACF tape 12. Is arranged.
[0034]
The temporary pressure bonding unit 37 holds the liquid crystal panel 1 on the upper surface by suction, and is located below the panel table 38 that can be moved in the X, Y, Z, and θ directions and the suction tool 23 that stops at the temporary pressure position c. When the panel table 38 moves forward, the panel table 38 is formed of a transparent support 39 made of glass or the like that supports the lower part of the liquid crystal panel 1 on which the FPC 7 is attached. The liquid crystal panel 1 is moved toward the main bonding unit 40 arranged on the downstream side while being sucked and held. In the main bonding unit 40, the temporary bonding part of the liquid crystal panel 1 and the FPC 7 is heated and pressed by the bonding tool 41 to perform the final bonding. I do.
[0035]
The temporary bonding position c is determined by aligning the alignment mark 11 of the FPC 7 with the alignment mark 6 of the liquid crystal panel 1 before the temporary bonding, and determining whether or not the ACF tape 12 is adhered around the alignment marks 6 and 11 after the temporary bonding. An inspection means 42 for optically inspecting is provided.
[0036]
As shown in FIGS. 2 and 3, the inspection means 42 includes a light source 43 for irradiating transmitted light toward the peripheral portions of the alignment marks 6 and 11 at positions on both sides above the transparent light-transmitting receiving table 39. The alignment mark 11 of the FPC 7 and the alignment mark 6 of the liquid crystal panel 1 are confirmed at the positions on both sides below the pedestal 39, and the attached state of the ACF tape 12 around the alignment marks 6, 11 is photographed. The CCD camera 44 is provided by separately arranging an image processing apparatus (not shown) for processing an image of the CCD camera 44. The CCD camera 44 includes a half mirror 46 inside the upper cylindrical body 45. The light from the fiber illumination 47 and the like is reflected upward by the half mirror 46 and used as a light source (coaxial incident illumination) for detecting the alignment marks 6 and 11.
[0037]
As the light source 43 for irradiating the transmitted light, a halogen lamp, an ultraviolet light, a xenon lamp, or the like can be used. The alignment of the alignment mark 11 of the FPC 7 and the alignment mark 6 of the liquid crystal panel 1 by the inspection means 42 is performed by the FPC 7 The suction tool 23 holding the suction tool 23 is lowered to a position where the alignment mark 11 of the FPC 7 is in focus with the CCD camera 44, and after confirming the alignment mark 11, the suction tool 23 is retracted to the raised position. 38, the liquid crystal panel 1 is made to face the transparent pedestal 39, the alignment mark 6 of the liquid crystal panel 1 is detected, and the panel table 38 is moved based on the detection signal, whereby the position of the alignment mark 6 is changed. After the correction, the alignment mark 6 of the liquid crystal panel 1 is To coincide with the alignment mark 11.
[0038]
In addition, the inspection of the attached state of the ACF tape 12 after the temporary pressure bonding is performed by using the transmitted light from the light source 43 to photograph the peripheral portions of the alignment marks 6 and 11 with the CCD camera 44, and the image is processed by the image processing device into 256. By recognizing the gradation and determining whether it is a reference point, the panel table is moved to align the alignment mark of the liquid crystal panel with the center of the image.
[0039]
Further, the luminance of 256 gradations is divided into two luminances with the reference luminance as a boundary, the gray search image is binarized (black and white), and a required number of inspection frames are set.
[0040]
The presence or absence of the ACF tape is determined by comparing the spot area and the number of clumps of the conductive particles reflected in spots with a reference.
[0041]
Next, a method of pressing the flexible substrate to the liquid crystal panel will be described in detail.
[0042]
As shown in FIG. 1, the transport table 28 sucks the FPCs 7 on the stacked or arranged pallets, and supplies the FPCs 7 to the suction tool 23 which stops at the receiving position a. With the rotation of the table 22 by 90 degrees, the suction tool 23 holding the FPC 7 by suction moves to the position B where the ACF tape 12 is attached to the FPC 7.
[0043]
As shown in FIG. 4A, the ACF tape cutting / supplying mechanism 29 at the sticking position b cuts the ACF tape 12 into a length corresponding to the electrode 8 of the FPC 7 with the cutter 31 leaving the release paper 13 as shown in FIG. As shown in FIG. 4B, when the suction tool 23 is lowered with respect to the ACF tape 12 located on the backup base 30 and the electrode 8 portion of the FPC 7 is pressed onto the ACF tape 12 and attached, FIG. ), The backup base 30 is lowered, and the pair of upper and lower peeling rollers 34 and 35 reciprocate to peel the release paper 13 from the ACF tape 12 adhered to the FPC 7, and thereafter, the suction tool 23 returns to the raised position. .
[0044]
When the index table 22 is further rotated by 90 degrees, the FPC 7 to which the ACF tape 12 has been attached moves to the temporary crimping position c.
[0045]
At the temporary pressure bonding position c, the inspection means 42 aligns the alignment marks 6 and 11 of the liquid crystal panel 1 with the FPC 7 and temporarily compresses the FPC 7 and the liquid crystal panel 1, and then moves the ACF tape 12 around the alignment marks 6 and 11. An inspection of the quality of the attached state is performed.
[0046]
First, the alignment between the alignment marks 6 and 11 of the FPC 7 and the liquid crystal panel 1 is performed by lowering the suction tool 23 to a position where the alignment mark 11 of the suction-held FPC 7 is focused on the CCD camera 44 as shown in FIG. A halogen lamp, an ultraviolet light, a xenon lamp, or the like may be used as a light source, and transmitted light may be used together as needed.
[0047]
These are used as light sources and photographed by the CCD camera 44, and after confirming the alignment mark 11, the suction tool 23 is retracted to the ascending position. Subsequently, the liquid crystal panel 1 is supplied onto the panel table 38, and the panel table 38 is The liquid crystal panel 1 is moved forward so that the portion where the electrodes 5 are provided faces the transparent receiving table 39. In this state, the alignment mark 6 of the liquid crystal panel 1 is detected by photographing with the CCD camera 44, as shown in FIG. By moving the panel table 38 based on this detection signal, the positions of the alignment marks 6, 6 'are corrected, and the alignment marks 6, 6' of the liquid crystal panel 1 are matched with the alignment marks 11, 11 'of the FPC 7.
[0048]
Next, as shown in FIG. 6, the panel table 38 and the suction tool 23 are lowered, and the electrode forming portion of the liquid crystal panel 1 and the portion where the ACF tape 12 of the FPC 7 is adhered are placed on the pedestal 39. The liquid crystal panel 1 and the FPC 7 are temporarily pressure-bonded via the ACF tape 12 by pressing from the. At this time, the temporary compression bonding is performed by heating the ACF tape 12 at a lower temperature than the main compression bonding.
[0049]
As a result, the liquid crystal panel 1 and the FPC 7 are provisionally pressure-bonded with the alignment marks 6 and 11 located at both ends coincident with each other, the suction tool 23 returns to the rising position in a state where the suction of the FPC 7 is released, and the panel table 38 also moves. The liquid crystal panel 1 rises slightly, and floats from the pedestal 39.
[0050]
When the temporary crimping is completed as described above, as shown in FIG. 6, the vicinity of the alignment marks 6 and 11 that have been temporarily crimped by turning on the light source 43 is illuminated, and the CCD camera 44 of the inspection means 42 uses the transmitted illumination to illuminate the vicinity. The vicinity of the alignment marks 6 and 11 is photographed, and the image processing apparatus recognizes the periphery of the photographed alignment marks 6 and 11 in 256 gradations and determines whether or not it is a reference point. The panel table 38 is moved so that the left and right alignment marks 6, 6 ', 11, 11' of the FPC are located at the image centers B, B 'in the left and right image frames A, A' of the CCD camera 44.
[0051]
Furthermore, the luminance of 256 gradations is divided into two luminances with a reference (arbitrary, automatically settable) luminance as a boundary, and the gray search image is binarized (black and white), and a plurality of inspection frames C and C 'are provided as necessary. Set.
[0052]
In the inspection frame C, the presence or absence of the ACF tape 12 is determined by comparing the spot area and the number of clumps of the conductive particles reflected in a spot shape with the reference, and FIG. 11 shows that the ACF tapes 12 and 12 ′ are normal. FIG. 12 shows a binary search image when the ACF tapes 12 and 12 ′ are not normally attached. ing.
[0053]
In this way, after the temporary press-fitting of the liquid crystal panel 1 and the FPC 7, the quality of the attached state of the ACF tape 12 is inspected. If the attached state of the ACF tape 12 is normal, the panel table 38 retreats and the temporary press-fit position c , And moves to the succeeding final pressure bonding unit 40 to perform the final pressure bonding step.
[0054]
Further, when the ACF tape 12 is not properly adhered, the FPC is sucked by the suction tool, the FPC is peeled off by sucking the liquid crystal panel on the panel table, the FPC is discharged to the discharge position d, and the liquid crystal panel is moved to the panel table. It will be discharged outside.
Alternatively, a liquid crystal panel discharge area may be separately provided in the vicinity of the temporary pressure bonding unit to discharge defective products (FPC temporary pressure bonded state).
[0055]
As described above, each time the suction tool 23 intermittently moves and stops at each of the positions a to d, the above-described process is performed in parallel at each of the positions a to d.
The shape of the alignment mark in this embodiment is not limited to this shape.
Further, at the time of alignment, not only the panel table but also the suction tool may be moved, or both the suction tool and the panel table may be moved.
[0056]
【The invention's effect】
As described above, according to the present invention, in the method of pressing the FPC to the liquid crystal panel using the ACF tape, the ACF tape is attached to the FPC, the ACF and the liquid crystal panel are aligned at the temporary pressing position, and after the temporary pressing, Since the quality of the ACF tape is determined, the defective product with the ACF tape attached can be excluded at the stage of the temporary press-bonding, so that the product defect rate is reduced and the reliability is improved.
[0057]
In addition, since a defective product to which the ACF tape is attached can be detected at the stage of the temporary press bonding, the defective product can be collected and repaired, and there is no need to discard the defective product, which is economical.
[0058]
Further, in the same process of the temporary crimping, the positioning, the temporary crimping and the inspection of the ACF tape attaching state can be performed, and the working efficiency is improved, and the camera for the positioning and the inspection of the ACF tape attaching state can be shared. This will lead to a reduction.
[Brief description of the drawings]
FIG. 1 is a plan view of an apparatus for crimping a flexible substrate to a liquid crystal panel. FIG. 2 is a side view of a temporary crimping unit in the same. FIG. 3 is a front view of a temporary crimping unit in the same. FIG. 4B is a side view showing a state before the ACF tape pasting mechanism of the ACF tape pasting mechanism, FIG. 4B is a side view showing a state where the FPC is pressure-bonded to the ACF tape, and FIG. 5: Side view of alignment position of temporary crimping section in the same as above. FIG. 6: Side view of ACF tape inspection state of temporary crimping section in the same embodiment. FIG. 7: Plan view of FPC with ACF tape attached. FIG. 9 is an explanatory view showing an image of an alignment mark. FIG. 10 is an explanatory view showing a state in which the alignment mark is moved to the center of the image. FIG. 11 is a state of a non-defective ACF tape inspection image. Illustration Figure 12 is an explanatory view showing a state of a defective ACF tape inspection image showing EXPLANATION OF REFERENCE NUMERALS
DESCRIPTION OF SYMBOLS 1 Liquid crystal panel 2 1st glass substrate 3 2nd glass substrate 4 Semiconductor element 5 Electrode 6 Alignment mark 6 'Alignment mark 7 FPC
8 Electrode 9 Electrode 10 Protecting part 11 Alignment mark 11 'Alignment mark 12 ACF tape 13 Release paper 21 Transfer mechanism 22 Index table 23 Suction tool 24 Suction head unit 25 Suction pad 26 Support table 27 Elevating shaft 28 Transfer table 29 ACF tape cutting supply Mechanism 30 Backup base 31 Cutter 32 Receiving stand 33 Fixed position guide roller 34 Peeling roller 35 Peeling roller 37 Temporary pressure bonding unit 38 Panel table 39 Cradle 40 Full pressure bonding unit 41 Pressure bonding tool 42 Inspection means 43 Light source 44 CCD camera 45 Upper cylinder 46 Half mirror 47 fiber lighting

Claims (2)

In the method of crimping the flexible substrate to the liquid crystal panel using the ACF tape, the ACF tape is attached to the flexible substrate, and the position of the alignment mark of the flexible substrate and the alignment mark of the liquid crystal panel is determined at the position where the flexible substrate and the liquid crystal panel are temporarily crimped. A method of crimping a flexible substrate to a liquid crystal panel, comprising performing alignment, temporary crimping of the flexible substrate and the liquid crystal panel, and inspection of whether the ACF tape is adhered. The suction tool of the transfer mechanism for intermittently transferring the suction by holding and holding the flexible substrate is made movable. The stop positions of the suction tool are defined as the receiving position of the flexible substrate, the attaching position of the ACF tape to the flexible substrate, the flexible substrate and the liquid crystal. The panel is set at the temporary crimping position and the defective product discharge position, and the liquid crystal panel is supported at the temporary crimping position by a panel table that can be rotated up and down and adjusted in a two-dimensional manner, and is attached to the flexible substrate by a suction tool. A temporary crimping unit for temporarily crimping the liquid crystal panel is arranged. At this temporary crimping position, the alignment mark between the flexible substrate and the liquid crystal panel is aligned by moving the suction tool and moving the panel table, and moving the flexible substrate and the liquid crystal panel together. ACF tape around the alignment mark after temporary crimping Apparatus for crimping a flexible substrate disposed inspection means for determining the acceptability optically in a liquid crystal panel.

Images