CN103765298A - Method of continuously manufacturing a product panel and system and method of detecting the front edge of a film - Google Patents
Method of continuously manufacturing a product panel and system and method of detecting the front edge of a film Download PDFInfo
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- CN103765298A CN103765298A CN201280042340.XA CN201280042340A CN103765298A CN 103765298 A CN103765298 A CN 103765298A CN 201280042340 A CN201280042340 A CN 201280042340A CN 103765298 A CN103765298 A CN 103765298A
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- Prior art keywords
- film
- leading section
- polarizing film
- light polarizing
- sheet light
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/18—Handling of layers or the laminate
- B32B38/1825—Handling of layers or the laminate characterised by the control or constructional features of devices for tensioning, stretching or registration
- B32B38/1833—Positioning, e.g. registration or centering
- B32B38/1841—Positioning, e.g. registration or centering during laying up
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1207—Heat-activated adhesive
- B32B2037/1215—Hot-melt adhesive
- B32B2037/1223—Hot-melt adhesive film-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B41/00—Arrangements for controlling or monitoring lamination processes; Safety arrangements
- B32B2041/06—Starting the lamination machine or method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/12—Photovoltaic modules
Abstract
[Problem] To provide a method of continuously manufacturing a product panel, whereby it is possible to continuously manufacture a product panel with high adhesion precision. [Solution] The method includes detecting the front edge of a film as the front edge of a polarising film in the form of a sheet approaches the position for sticking together with a rectangular panel, positional alignment of the polarising film in the form of a sheet with the rectangular panel based on information as to the position of the film front edge which is thus detected, and sticking together the polarising film in the form of a sheet and the rectangular panel. In order to detect the film front edge, light having an optical axis that makes an acute angle with respect to the direction of film feed is directed towards the film front edge from the upstream side of the direction of film feed of the polarising film in the form of a sheet, an image is acquired by image pickup of the region which is thus illuminated by the light, and the front edge of the film is identified, based on the difference in brightness of the image of the film front edge with respect to the image of portions other than the film front edge.
Description
Technical field
The present invention relates to the method for continuous production of the products panel in a kind of rectangular panel that sheet light polarizing film is fitted in be successively transported to continuously laminating position.Particularly, the present invention relates to the method for continuous production of the products panel that a kind of leading section of the contraposition reference sheet light polarizing film can be by the laminating of sheet light polarizing film and rectangular panel time easily detects.
Background technology
In the past, in the manufacture of the products panels such as display panels, in operation outside Jiang products panel manufacturing process, the sheet light polarizing film under continuous band-shaped light polarizing film cuts is brought in the manufacturing process of products panel in advance, with the rectangular panel laminating of bringing in addition in the manufacturing process of products panel.
For such manufacture method, proposed a kind ofly only the normal sheet that does not have defect in a plurality of sheet light polarizing film that are layered in via adhesive linkage on continuous band-shaped diffusion barrier to be peeled off successively together with adhesive linkage from continuous band-shaped diffusion barrier, make it to fit by adhesive linkage and rectangular panel, thus the device and method of the panel that manufactures a product continuously.The apparatus for continously production of such products panel and method are for example documented in patent documentation 1(Jap.P. No. 4377964) in.
In the continuous manufacture of the products panel of recording at patent documentation 1, the duplexer reel that uses continuous band-shaped diffusion barrier and continuous band-shaped light polarizing film to be laminated into.By the result of defect inspection in the continuous band-shaped light polarizing film of the duplexer sending from this reel, based on carrying out in advance, definite position processes horizontal incision line, forms sheet light polarizing film on continuous band-shaped diffusion barrier.Incision line also can be processed on duplexer reel in advance.Sheet light polarizing film is delivered to (like this, continuous band-shaped diffusion barrier has the function as the carrier of conveying sheet-shaped light polarizing film, so be referred to as below " continuous band-shaped carrier film ") near the laminating position with rectangular panel by continuous band-shaped diffusion barrier.In this manual, " laminating position " is the position that the film leading section of sheet light polarizing film and the panel leading section of rectangular panel start laminating.On the other hand, rectangular panel is also transported near laminating position.In the situation that be delivered to the sheet light polarizing film that near sheet light polarizing film laminating position is normal (there is no defect), based on its positional information, proofread and correct the position of rectangular panel.The normal sheet light polarizing film equipment that is stripped from is peeled off from continuous band-shaped carrier film.Sheet light polarizing film is transported to laminating position while being stripped from, and uses the abutted equipments such as doubling roller and rectangular panel laminating.The process of the position of the position information correction rectangular panel based on normal sheet light polarizing film is called to " contraposition " of sheet light polarizing film and rectangular panel.
The contraposition of normal sheet light polarizing film and rectangular panel is roughly carried out in the following manner.First, when the film leading section of the sheet light polarizing film of being fitted (processing the part of horizontal incision line) is arrived on peel-off device, from the light source of the substantially vertical direction configuration of the face along with sheet light polarizing film, to film leading section, irradiate light, utilize and such as image acquisition equipments such as CCD cameras, irradiated part is taken.Also can irradiate room light or natural light to film leading section.Then, in the image photographing, detect film leading section, calculate its position.The positional information of the leading section based on detecting, proofreaies and correct the throughput direction of rectangular panel and the angle between lateral attitude and center line or lateral ends and throughput direction.
On the other hand, in recent years, the products panels such as display panels are towards miniaturization, slimming and lightweight development, and what accompany with it is that narrow and smallization towards viewing area periphery is narrow frameization development.In order to realize narrow frame, require the Anawgy accuracy of rectangular panel and light polarizing film higher.
But, in the apparatus for continously production of products panel in the past and method, there is following shortcoming: be difficult to obtain and require from now on more and more higher high Anawgy accuracy.In the apparatus for continously production and method of products panel in the past, when the film leading section of sheet light polarizing film is present on peel-off device, film leading section is detected, utilize peel-off device continuous band-shaped carrier film, slowly to peel off sheet light polarizing film on one side, on one side film leading section is delivered to laminating position.On the other hand, behind the position of the position information correction rectangular panel of the film leading section based on detecting, this rectangular panel is delivered to laminating position.In this course of conveying, the tension change when operational throughput of sheet light polarizing film can act on the power of film owing to peeling off and carry etc. produces deviation.Therefore, when film leading section and panel leading section arrival laminating position, the position of sheet light polarizing film can produce change with respect to the position that originally should locate obtaining by contraposition, and its result is that the laminating of sheet light polarizing film and rectangular panel is offset.Be difficult to now adjust exactly the above-mentioned operational throughput of sheet light polarizing film, so in the apparatus for continously production and method of products panel in the past, be difficult to obtain the Anawgy accuracy of the desired high level of narrow frameization.
About detecting the method for the laminating position skew of light polarizing film and substrate, be documented in for example patent documentation 2(TOHKEMY 2007-212939 communique) in.But the technology that patent documentation 2 is recorded is for detect the technology of the position skew of film and substrate after light polarizing film is fitted on substrate.Because light polarizing film approximately only has the thickness of 200～300 μ m left and right, so, detecting the end of film, irradiate the light time, in the technology of recording at patent documentation 2, position relationship regardless of light polarizing film and substrate and light source, all must make light also be irradiated to the end of substrate and circuit pattern etc., inevitably the scattered light from these ends will be detected as surround lighting.Therefore, can imagine and obtain, be difficult to utilize the surround lighting from part beyond film end to detect film end.Like this, the technology that patent documentation 2 is recorded can not be applied in the technology of the panel that manufactures a product continuously.
Prior art document
Patent documentation
Patent documentation 1:(Japan) No. 4377964 instructions of patent
Patent documentation 2:(Japan) JP 2007-212939 communique
Patent documentation 3:(Japan) No. 4644755 instructions of patent
Summary of the invention
Invent technical matters to be solved
As mentioned above, in continuous manufacture in the past, for the benchmark that obtains that the position of rectangular panel is proofreaied and correct is the positional information of the film leading section of sheet light polarizing film, when being present on peel-off device, film leading section carries out the detection of film leading section.This is because due to the catoptrical reason from peel-off device, in the image photographing, the background of film leading section and film leading section is that the contrast differences between peel-off device increases, so can easily detect film leading section.
But, in order to reach high Anawgy accuracy, the contraposition of sheet light polarizing film and rectangular panel preferably in the film front end of sheet light polarizing film in laminating position or from peel-off device to laminating position, carry out during with approaching as far as possible position, laminating position.But, in this case, in the background of the film leading section in the image photographing, there are not other parts, so film leading section and background do not have contrast differences, thereby have the extremely difficult problem of detection of film leading section.If film leading section and background do not have contrast differences, likely cannot detect film leading section.In addition, allow to detect film leading section, till detect, also may need time of growing, in this case, the products panel in the unit interval is manufactured quantity and is reduced, and the superiority of the device and method of the panel that manufactures a product continuously reduces.
The object of the present invention is to provide and a kind ofly can manufacture continuously the method for continuous production of the products panel of the products panel that Anawgy accuracy is high, and be suitable for the method, for detecting effectively detection system and the detection method of film end.
The technological means of technical solution problem
The present invention makes based on following idea: even in the situation that again film leading section is detected after carrier film is peeled off the part of the sheet light polarizing film that comprises film leading section, also can by make film leading section luminous make to detect become easy.
In first aspect, the invention provides and a kind of a plurality of sheet light polarizing film that are layered in via adhesive linkage on a face of continuous band-shaped carrier film are peeled off successively from continuous band-shaped carrier film together with adhesive linkage, and make sheet light polarizing film utilize adhesive linkage and rectangular panel laminating in laminating position, thereby the method for the panel that manufactures a product continuously.This method comprises: from continuous band-shaped carrier film, peel off a part for sheet light polarizing film, and make the film leading section of sheet light polarizing film approach the step with the laminating position of rectangular panel laminating; Detect the step of film leading section; Positional information based on detected film leading section, makes the step of sheet light polarizing film and rectangular panel contraposition; Make the step of sheet light polarizing film and rectangular panel laminating.The step that detects film leading section comprises: in a side of the face contrary with adhesive linkage of sheet light polarizing film, from the upstream side of the throughput direction of sheet light polarizing film, irradiate the step of light to film leading section, the optical axis of this light forms acute angle with respect to the throughput direction of sheet light polarizing film; The region being irradiated by light to sheet light polarizing film is taken, and obtains the step of image; The luminosity of the picture of other parts beyond the picture of the film leading section based on manifesting in image and this film leading section poor, the step of identification film leading section.
Rectangular panel both can be delivered to laminating position after the step that makes sheet light polarizing film and rectangular panel contraposition, also can when making the step of sheet light polarizing film and rectangular panel contraposition, be delivered to laminating position.
In the method, to film leading section, irradiating in the step of light, preferably to film leading section irradiation optical axis, with respect to the throughput direction of sheet light polarizing film, becoming to be less than the light of the angle of 45 °.In addition, in the method, the region preferably from a side of the face contrary with adhesive linkage of sheet light polarizing film, illumination being mapped to is taken.
The step of identification film leading section preferably includes: from the direction of conveyance direction downstream side that is equivalent to sheet light polarizing film to the scanning direction image that is equivalent to upstream side, the light in image is identified as to film leading section.
In second aspect, the invention provides a kind of detection system, thereby it is applied to and makes sheet light polarizing film utilize the laminating of adhesive linkage and rectangular panel to manufacture a product continuously in the device of panel, for the film leading section of the sheet light polarizing film that detection is stripped from before laminating in laminating position.Native system has: at least one light source, and its side at the face contrary with adhesive linkage of sheet light polarizing film is irradiated light from the throughput direction upstream side of sheet light polarizing film to film leading section, and the optical axis of this light forms acute angle with respect to the throughput direction of sheet light polarizing film; At least one image acquisition equipment, its region being irradiated by light to sheet light polarizing film is taken and is obtained image; Film leading section identification equipment, the luminosity of the picture of other parts beyond the picture of its film leading section based on manifesting in image and this leading section poor, identification film leading section.
In native system, the throughput direction of optical axis and sheet light polarizing film is preferably formed the angle that is less than 45 °.In addition, in native system, the region that image acquisition equipment is preferably mapped to illumination from a side of the face contrary with adhesive linkage of sheet light polarizing film is taken.Film leading section identification equipment preferably, from the direction of conveyance direction downstream side that is equivalent to sheet light polarizing film to the scanning direction image that is equivalent to upstream side, is identified as film leading section by the light in image.
In the third aspect, the invention provides a kind of detection method, thereby it is applied to and makes sheet light polarizing film utilize the laminating of adhesive linkage and rectangular panel to manufacture a product continuously in the device of panel, for the film leading section of the sheet light polarizing film that detection is stripped from before laminating in laminating position.This method comprises: the side at the face contrary with adhesive linkage of sheet light polarizing film is irradiated the step of light from the throughput direction upstream side of sheet light polarizing film to film leading section, the optical axis of this light forms acute angle with respect to the throughput direction of sheet light polarizing film; The region being irradiated by light of sheet light polarizing film is taken and obtained the step of image; The luminosity of the picture of other parts beyond the picture of the film leading section based on manifesting in image and this leading section poor, the step of identification film leading section.
In the method, to film leading section, irradiating in the step of light, preferably to film leading section irradiation optical axis, with respect to the throughput direction of sheet light polarizing film, forming the light of the angle that is less than 45 °.In addition, in the method, the region preferably from a side of the face contrary with adhesive linkage of sheet light polarizing film, illumination being mapped to is taken.Film leading section identification step preferably, from the direction of conveyance direction downstream side that is equivalent to sheet light polarizing film to the scanning direction image that is equivalent to upstream side, is identified as film leading section by the light in image.
According to the present invention, even when utilizing peel-off device to peel off position between laminating position or peel-off device and laminating position of a part for sheet light polarizing film, film front end from carrier film, also can easily detect film leading section.Therefore, can shorten and detect the film required time of leading section, the products panel that can increase in the unit interval is manufactured quantity.In addition, by carrying out the detection of film leading section in laminating position or from laminating compare Jin position, position, after sheet light polarizing film and rectangular panel contraposition, sheet light polarizing film does not need mobile or its displacement shortening, so can further improve Anawgy accuracy.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the products panel apparatus for continously production of an embodiment of the present invention.
Fig. 2 means the continuous process flow diagram of manufacturing operation used of the products panel of an embodiment of the present invention.
Fig. 3 means figure an embodiment of the present invention, form the state of sheet light polarizing film in continuous band-shaped carrier film.
Fig. 4 means for detect the schematic diagram of the existing structure of film leading section on peel-off device.
Fig. 5 means the photo of an example of the image that the structure shown in use Fig. 4 is obtained.
Fig. 6 means and uses the structure shown in Fig. 4 in the situation that compare the photo of an example of image of the location detection film leading section of more close laminating position with peel-off device.
Fig. 7 mean an embodiment of the present invention, for the schematic diagram of structure compare the location detection film leading section of more close laminating position with peel-off device.
Fig. 8 A means in the situation that the throughput direction angulation of the optical axis of light source and sheet light polarizing film is the photo of image of a part for sheet light polarizing film 20 °, that comprise film leading section.
Fig. 8 B means in the situation that the throughput direction angulation of the optical axis of light source and sheet light polarizing film is the photo of image of a part for sheet light polarizing film 75 °, that comprise film leading section.
Fig. 8 C means in the situation that the throughput direction angulation of the optical axis of light source and sheet light polarizing film is the photo of image of a part for sheet light polarizing film 90 °, that comprise film leading section.
Fig. 9 mean an embodiment of the present invention, from detecting the process flow diagram of film leading section processing the contraposition of reference position to film leading section and laminating.
The detection method of the film leading section that utilizes an embodiment of the present invention that means Figure 10 detects the figure that Anawgy accuracy in the situation of position of film leading section improves effect.
Embodiment
The apparatus for continously production of < products panel of the present invention and the overview > of method
Describe with reference to the accompanying drawings the present invention in detail.
Fig. 1 means that Fig. 2 is the process flow chart of method for continuous production of the present invention for realizing the schematic diagram of device of the method for continuous production of products panel of the present invention.Apparatus for continously production 1 shown in Fig. 1 comprise by the sheet light polarizing film 10 shown in Fig. 3 be delivered to laminating station film feeding device 100, make sheet light polarizing film 10 and the laminating apparatus 200 of rectangular panel W laminating, rectangular panel W is delivered to the rectangular panel conveying device 300 of laminating position and controls the control device 400 of the molar behavior of film feeding device 100, laminating apparatus 200 and rectangular panel conveying device 300.The sheet light polarizing film 10 that is delivered to laminating station is fitted on rectangular panel W in laminating position, and the products panel of manufacturing is exported from apparatus for continously production 1 by products panel conveying device 350.
According to Fig. 1 and Fig. 2, the device of apparatus for continously production 1 and the overview of action are described.Note, about this device, for the structure of the film leading section in laminating station detection sheet light polarizing film 10 and other details beyond method, be documented in detail in the patent documentation 1 that the applicant applies for before this, in the application's method for continuous production, also can have adopted structure and identical structure and the method for method recorded with patent documentation 1.In the film feeding device 100 of apparatus for continously production 1, on holder device 110, be provided with and make continuous band-shaped light polarizing film via adhesive linkage, be layered in the reel of the duplexer forming in continuous band-shaped carrier film 14, from be arranged on the duplexer reel holder device 110, send duplexer.On the duplexer of sending, with for example cutting position information of numeralization, utilize reading device 120 to read cutting position information.Cutting position is the result of the defects detection of carrying out when manufacturing duplexer reel and predetermined, and the cutting position of being determined is preferably as cutting position information and being encoded is attached on duplexer.Then, duplexer is transported to cutting station, utilizes cutter sweep 150 on duplexer, to process incision line.Cutting position information based on being read by reading device 120, as shown in Figure 3, from a side contrary with continuous band-shaped carrier film 14, cuts line 16 with respect to the throughput direction of duplexer along laterally processing.The degree of depth of incision line 16 is the degree of depth that reaches the interface of continuous band-shaped carrier film 14 and adhesive linkage 12.
The state of the duplexer after cutting as shown in Figure 3.Duplexer after cutting has a plurality of sheet light polarizing film 10 of being divided by incision line 16 and via adhesive linkage 12, is layered in the structure in continuous band-shaped carrier film 14.Sheet light polarizing film 10 is conventionally at the two sides of polaroid stacked guard film.In sheet light polarizing film 10, the also stacked surface protection film 13 with bonding plane as required.
The location optimization of formed incision line 16 confirms that by cutting position device 160 reads, the skew based on its calibration of the output results cutting position and cutting angle.Note, when the cutting of film and laminating, preferably utilize and comprise that the velocity adjustment apparatus 140 that accumulates roller adjusts the speed that films are carried.The result of processing incision line 16 is to form and do not have defective normal sheet light polarizing film and defective bad sheet light polarizing film to be layered in the state in continuous band-shaped carrier film 14 via adhesive linkage 12.Utilize continuous band-shaped carrier film 14 to laminating station 200 conveying sheet-shaped light polarizing film 10.Preferably before arriving laminating station or in laminating station, use bad output mechanism (not shown) to discharge defective sheet light polarizing film.
As other forms of duplexer, also can on the duplexer reel of apparatus for continously production 1, be pre-formed incision line 16 being installed on.In this case, apparatus for continously production 1 can be for removing the structure after reading device 120 and cutting station from the device shown in Fig. 1.The in the situation that of this form, the duplexer of sending from duplexer reel has the structure shown in Fig. 3.
Then, use laminating apparatus 200 that the normal sheet light polarizing film in sheet light polarizing film 10 is fitted with the rectangular panel W that is delivered to laminating station by rectangular panel conveying device 300.By utilizing direct of travel that the leading section that forms acute angle of peel-off device 201 only makes continuous band-shaped carrier film 14 towards roughly contrary direction reversion of the throughput direction with sheet light polarizing film 10 (hereinafter referred to as " throughput direction "), the sheet light polarizing film 10 that is delivered to laminating station together with continuous band-shaped carrier film 14 is peeled off together with adhesive linkage 12 from continuous band-shaped carrier film 14.The film leading section 10a of the sheet light polarizing film 10 of peeling off is transported to laminating position between the doubling roller 202 of pair of separated of laminating apparatus 200 or the arbitrary position between peel-off device and laminating position.Position to the film leading section 10a of the sheet light polarizing film 10 being transferred is detected.In detection, be that film leading section 10a is transported to laminating position after detection in the situation that between peel-off device 201 and laminating position, carry out arbitrary position.
On the other hand, rectangular panel W is delivered to laminating station by rectangular panel conveying device 300, and in this process, the positional information based on detected film leading section 10a, proofreaies and correct (that is, making sheet light polarizing film and rectangular panel " contraposition ") to its position.After contraposition, the leading section of rectangular panel W is transported to the laminating position between doubling roller 202.Rectangular panel W also can be transported to laminating position when contraposition, in that time that completes contraposition, leading section is configured in to laminating position.Then, make doubling roller 202 closures, while make sheet light polarizing film 10 and rectangular panel W fit and advance, complete thus the laminating of sheet light polarizing film 10 and rectangular panel W between closed doubling roller 202.Continuous band-shaped carrier film 14 after sheet light polarizing film 10 is stripped from is batched by take-up mechanism 170.
The overview > of < alignment method
Sheet light polarizing film 10 was carried out contraposition with rectangular panel W before laminating.The overview of alignment method is as follows.Note, details about sheet light polarizing film 10 with the alignment method of rectangular panel W, be documented in detail in the patent documentation 3 that the applicant applies for before this, in the application's method for continuous production, also can have adopted the identical method of method of recording with patent documentation 3.First, utilize peel-off device 201 to peel off the part of the sheet light polarizing film 10 that comprises film leading section 10a from continuous band-shaped carrier film 14, after peeling off, when film leading section 10a arrives laminating position or peel-off device 201 to arbitrary position between laminating position, the irradiation light from light source 204 to film leading section 10a.The part sheet light polarizing film 10 that illumination is mapped to or wherein a part, utilize and take such as image acquisition equipments 203 such as CCD cameras.Consider in order to realize the narrow frame of products panel and pursue higher Anawgy accuracy, preferably when the film leading section 10a of sheet light polarizing film 10 arrives laminating position, carry out the detection of the film leading section 10a of sheet light polarizing film 10.Image based on photographing, detects film leading section 10a, the position of calculating the film leading section 10a detecting.Also can the image acquisition equipment 180 that the side end of sheet light polarizing film 10 is taken be set the arbitrary position before laminating station, the image based on photographing, the film side end of detection sheet light polarizing film 10, the position of calculating film side end.
In the image of image acquisition equipment 203, pre-determine film reference position, be the sheet light polarizing film 10 film reference position used with the contraposition of rectangular panel W.Film reference position is when sheet light polarizing film 10 is disposed on the datum line of the direction that expression should conveying sheet-shaped light polarizing film 10, is used for making 10 pairs of bit positions of sheet light polarizing film.Film leading section based on calculated and the position of side end, obtain the sheet light polarizing film 10 that arrives film leading section detection position with respect to the angular deflection amount of film reference position and with respect to film reference position in throughput direction and side-play amount transversely.For rectangular panel W, the also alignment mark based on being located on rectangular panel W, calculates the skew between itself and panel reference position (being the contraposition panel reference position used of sheet light polarizing film 10 and rectangular panel W) separately.The side-play amount of the sheet light polarizing film 10 based on obtained, the position of proofreading and correct rectangular panel W.
After proofreading and correct the position of rectangular panel W, laminating sheet light polarizing film 10 and rectangular panel W.Detection at film leading section 10a is in the situation that carry out the arbitrary position between peel-off device 201 and laminating position, sheet light polarizing film 10 is further delivered to laminating position, with laminating reference position be sheet light polarizing film 10 with the laminating position of rectangular panel W in reference position contraposition.Rectangular panel W is also transported to laminating position, with laminating reference position contraposition.In the detection of film leading section 10a, be carry out in laminating position in the situation that, based on this position, rectangular panel W be delivered to laminating position, make it and the reference position contraposition of fitting.In this case, film reference position is same position with laminating reference position.Then, the sheet light polarizing film after contraposition 10 is fitted by doubling roller 202 with rectangular panel W.
By this alignment method, can understand, be that the position of film leading section is extremely important for aligning accuracy being improved, detecting exactly contraposition reference.
< film leading section detection method in the past and the problem > of Anawgy accuracy raising aspect
At this, for the detection method carried out, detect film leading section on peel-off device in the past, describe.Fig. 4 means the schematic diagram of the structure of the existing structure 600 that detects film leading section 10a on peel-off device 201.In existing structure 600, when the film leading section 10a of the sheet light polarizing film 10 in continuous band-shaped carrier film 14 comes on peel-off device 201 (film leading section 10a is from continuous band-shaped carrier film 14 is peeled off), from light source L to the regulation area illumination light that comprises film leading section 10a, light can be also natural light or room light.In addition, light also can irradiate all the time.In existing structure 600, light source L, along the direction configuration substantially vertical with film surface, therefore, only irradiates from the direction substantially vertical with film surface.Utilize the image acquisition equipments such as CCD camera 203 to take the region being irradiated by light, obtain the image of shooting area.Luminosity based in image carries out binary conversion treatment to the image obtaining.
Fig. 5 means the photo of an example of the image before the binary conversion treatment obtaining in this way.In Fig. 5, peel-off device front end R portion is utilizing take-up mechanism 170(Fig. 1) by along R the continuous band-shaped carrier film 14 by this part to roughly during contrary direction tension, playing the part of peeling off the effect of sheet light polarizing film 10 and adhesive linkage 12 from continuous band-shaped carrier film 14 with throughput direction.As shown in Figure 5, a part for light polarizing film 10 is the state being present on peel-off device front end R portion peel-off device 201 nearby.In image, sheet light polarizing film 10 is clapped more blackly, and the surface of peel-off device 201 is clapped whitelyr, so sheet light polarizing film 10 is large with the surperficial contrast differences of peel-off device 201.Therefore, this image is being carried out after binary conversion treatment, can easily detect the film leading section of sheet light polarizing film 10.
But, in the situation that detecting film leading section 10a like this on peel-off device 201, sheet light polarizing film 10 will reduce with the Anawgy accuracy of rectangular panel W.Its reason is as follows.That is, in the situation that detect the structure of film leading section 10a on peel-off device 201, after detecting film leading section 10a, calculate the position of detected leading section 10a, based on this positional information, the position of rectangular panel W is proofreaied and correct.Then, film leading section 10a is peeled off and is transported to laminating position from continuous band-shaped carrier film 14, and with it synchronously, rectangular panel W is also transported to laminating position.Distance from the leading section of peel-off device 201 to laminating position is about 10mm～50mm conventionally, in sheet light polarizing film 10, be transferred in the process of mobile this distance, the tension change when power while peeling off and conveying etc. will cause the operational throughput of sheet light polarizing film 10 to produce deviation.Therefore, when film leading section 10a and panel leading section Wa arrival laminating position, the position of sheet light polarizing film 10 can misplace with respect to the position that should start laminating obtaining by contraposition, and its result is that sheet light polarizing film 10 produces skew with the laminating of rectangular panel W.Be difficult to now adjust exactly the deviation of this operational throughput, so in the apparatus for continously production and method of products panel in the past, be difficult to obtain the Anawgy accuracy of the desired high level of narrow frameization.
Therefore, in order to improve Anawgy accuracy, preferably at film leading section 10a, be stripped from equipment 201 after continuous band-shaped carrier film 14 is peeled off, at film leading section 10a, arrive laminating position or during with approaching as far as possible position, laminating position, carry out the detection of film leading section 10a.But, in existing structure, when film leading section 10a is between peel-off device 201 and laminating position, as shown in Figure 6, in the background of the sheet light polarizing film 10 in shooting area, there are not other parts, so can not distinguish film leading section 10a and background, thereby have the extremely difficult problem of detection of film leading section 10a.
Structure and detection method > that < the present invention detects for film leading section
In the present invention, by adopting the structure 700 shown in Fig. 7, can between laminating position or peel-off device 201 and laminating position, easily detect the film leading section 10a of sheet light polarizing film 10.Fig. 7 (a) schematically shows for realizing the stereographic map of position relationship of each parts of the structure 700 of method for continuous production of the present invention and film leading section detection method, and Fig. 7 (b) is the schematic diagram from the transverse observation structure 700 with respect to throughput direction.In addition, Fig. 9 represents from detecting film leading section 10a to the processing flow chart film leading section 10a and laminating reference position contraposition.
In structure 700, sheet light polarizing film 10 after continuous band-shaped carrier film 14 strips down, is transported to the arbitrary position between laminating position or peel-off device 201 and laminating position at the equipment of being stripped from 201, at this place, detects film leading section 10a.At film leading section 10a, arrive detection position, while fitting arbitrary position between position or peel-off device 201 and laminating position, the irradiation light from light source 204 to film leading section 10a.The detection position of film leading section 10a is set as laminating position or the arbitrary position that is set as peel-off device and fits between position, need to, based on the desired Anawgy accuracy of products panel, before apparatus for continously production 1 entry into service, set in advance.
As shown in Figure 7 (b) shows, light source 204 sheet light polarizing film 10 with on the face contrary side of continuous band-shaped carrier film 14, with respect to the throughput direction of sheet light polarizing film 10, be configured in than laminating position more by the position of upstream side, more preferably, be configured in than the leading section of peel-off device 201 and more lean on the position of upstream side.Angle θ between the surface of the optical axis of the light being irradiated by light source 204 in addition, and sheet light polarizing film 10 (being the throughput direction of film) is set as acute angle.More preferably, angle θ is less than the angle of 45 °.
The present invention has utilized following phenomenon: when the optical axis sending from light source 204 is mapped to the film leading section 10a of sheet light polarizing film 10 with respect to the acutangulate illumination of throughput direction shape of sheet light polarizing film 10, light, at film leading section 10a, scattering occurs.In the image photographing at image acquisition equipment 203, this scattered light is used as stronger light with other part phase specific energys and captures, so can easily detect leading section 10a.This scattered light is considered to due to following former thereby produce: when forming incision line 16, result from the burr of the cutting part of banded light polarizing film 10, coarse causing and at film leading section 10a, diffuse scattering occurs from the light of light source 204; Duplexer at multilayer film is the inside of sheet light polarizing film 10, and the light that enters film inside from light source 204 reflection occurs and propagate towards film leading section 10a at the interface such as diaphragm and polaroid etc., and this light appears from film leading section 10a.
The optical axis of light source 204 and throughput direction angulation θ are less, and scattering light intensity is stronger.The present inventor thinks that this phenomenon is based on following three reasons.First, angle θ is less, and the amount of light that shines directly into sheet light polarizing film 10 is fewer, so utilize scattered light, the contrast of shinny film leading section 10a and other parts is larger.Secondly, along with reducing of angle θ, the burr of observing from light source 204, coarse surperficial size increase, so scattering more easily occurs light.Finally, along with reducing of angle θ, enter sheet light polarizing film 10 inner and increase in the amount of the light of the interior generation internal reflection of sheet light polarizing film 10, the light appearing from film leading section 10a is increased.
As light source 204 being configured in to the laminating upstream side of position but not the main cause in downstream, can enumerate following some.The first, in the situation that light source 204 is configured in to the downstream of laminating position, the light of irradiation is reflected by doubling roller 202, is subject to this catoptrical impact, and the film leading section 10a in shooting area and the contrast of other parts reduce, and are difficult to detect leading section 10a.In addition, although the optical axis of light and the angle between the throughput direction of film of irradiating are the smaller the better as mentioned above, but because there is the transport path of products panel in the downstream of laminating position, so having to be greater than light source 204, angle θ is configured in the angle while fitting position upstream side.If increase angle θ, link the line of image acquisition equipment 203 and film leading section 10a and reduce from the angle between the optical axis of the irradiation light of light source 204, so the reflection light quantity being reflected by film, inject to image acquisition equipment 203 increases, consequently, the contrast of the film leading section 10a in shooting area further reduces.The second, by light source 204 being configured in to the upstream side of laminating position, due to the catoptrical reason of above-mentioned sheet light polarizing film 10 inside of appearing from film leading section 10a, the scattered light that film leading section 10a produces further strengthens.
Fig. 8 A～Fig. 8 C is the photo obtaining by experiment, this experiment for representing that angle θ is less, in shooting area, catch larger from the scattered light of film leading section and the contrast of peripheral part.These photos are that to make the distance of film leading section and light source be that the angle of 500mm, the face of sheet light polarizing film and the optical axis of light source is 20 ° (Fig. 8 A), 75 ° (Fig. 8 B) and 90 ° (Fig. 8 C), from light source to film leading section, irradiate the light of 50cd, utilize the camera being located in the direction vertical with pellicular front to form comprising that a part for the film of film leading section is taken.From Fig. 8 A～Fig. 8 C, angle θ is less, and the luminosity of film leading section is stronger, and film leading section is larger with contrast around.In addition we know, in the situation that the angle of 20 ° shown in Fig. 8 A only has film leading section shinny.
The kind of light source 204 is not particularly limited, image acquisition equipment 203 can use any light source such as LED light source, incandescent light source, HID light source, as long as can utilize the light irradiating to the film leading section 10a of sheet light polarizing film 10 to take film leading section 10a.The quantity of light source 204 is not particularly limited, but in order to irradiate two bights of the film leading section of sheet light polarizing film 10, at least two light sources of preferred disposition 204.
The image being obtained by image acquisition equipment 203 is output to film leading section identification equipment 205, carries out image analysis.Film leading section identification equipment 205 is preferably located in signal conditioning package 401, but is not limited to this, for example, also can be located at together with image acquisition equipment 203 in a device.Film leading section identification equipment 205 is used and only utilizes white and black the image obtaining to be converted to the method for analyzing image of binary image, but method for analyzing image is not limited to this, so long as the method for the light in recognition image and dark part accurately.Binary conversion treatment is carried out in the following manner: obtain the brightness of each pixel in image, if its brightness is greater than certain certain threshold value, using this pixel as white, if its brightness is less than certain certain threshold value, using this pixel as black.Therefore, in the present invention, in the image obtaining, film leading section 10a shows as white.
In the present invention, no matter be to carry out the detection of film leading section 10a in laminating position, or from peel-off device 201, to fitting, carrying out the detection of film leading section 10a position, rectangular panel W is set as the position standby in regulation, until at least complete the detection of film leading section 10a.From improving the viewpoint of Anawgy accuracy, sheet light polarizing film 10 and rectangular panel W preferably reduce and carry the number of times stopping before laminating starts, and shorten from the fed distance to laminating position to bit position as far as possible.Therefore, rectangular panel W is preferably in approaching with the laminating position as far as possible position standby of its leading section.On the other hand, the position of the leading section of rectangular panel W approaches laminating position, the leading section of film leading section 10a and rectangular panel W just the closer to, also can make in the worst case film leading section 10a contact with the leading section of rectangular panel W.
Therefore, in the present invention, rectangular panel W, before the detection of film leading section 10a completes, approaches and the leading section discontiguous position standby of film leading section 10a and rectangular panel W at the film leading section 10a of the leading section of rectangular panel W and the sheet light polarizing film 10 that stops in order to detect film leading section 10a carrying as far as possible.As shown in Figure 7 (b) shows, during from transverse observation structure 700, rectangular panel W is preferably in the upstream side standby that links the position that rectangular panel W leading section is vertical with the surface of rectangular panel W with the straight line of peel-off device 201 leading sections, more preferably, linking the position standby vertical with the straight line of peel-off device 201 leading sections and the surface of rectangular panel W of rectangular panel W leading section.
The position of rectangular panel W also can be different when starting and complete the detection of film leading section 10a of sheet light polarizing film 10.In this case, rectangular panel W is transferred in the testing process of film leading section 10a, that time completing, is linking the position standby vertical with the straight line of peel-off device 201 leading sections and the surface of rectangular panel W of rectangular panel W leading section in detection.
Then, utilize Fig. 9 to describing to film leading section 10a and the laminating processing that completes contraposition of reference position from detecting film leading section 10a.First, in the time of near the film leading section 10a of sheet light polarizing film 10 arrives detection position, temporarily stop conveying sheet-shaped light polarizing film 10, from light source 204 to film leading section 10a, irradiate light (s1 of Fig. 9).Also can from light source 204 to detection position, irradiate all the time light.Then, sheet light polarizing film 10 is advanced, so that film leading section 10a enters coverage (s2 of Fig. 9).This is after fitting with rectangular panel W by the sheet light polarizing film 10 before this sheet light polarizing film 10, calculate the distance to film reference position according to the film leading section position calculating from this sheet light polarizing film 10, and sheet light polarizing film 10 advanced, and this distance carries out.
Then, utilize 203 pairs of image acquisition equipments to comprise that a part for the sheet light polarizing film 10 of film leading section 10a takes (s3 of Fig. 9).The size and location of coverage are not particularly limited, so long as detect the required size and location of film leading section 10a.Camera site is preferably two bights of film leading section 10a.The size of coverage be consider after time for catch sheet light polarizing film 10 in coverage and precision suitably definite.The image of taking is exported to film leading section identification equipment 205.
Film leading section identification equipment 205 detects the s4 of film leading section 10a(Fig. 9 from the image receiving).First, film leading section identification equipment 205 receives image, the image obtaining is converted to the binary image that only utilizes white and black.Binary conversion treatment is undertaken by following manner: obtain the brightness of each pixel in image, if its brightness is greater than certain threshold value of suitable setting, using this pixel as white, if be less than, as black.The image interscan of film leading section identification equipment 205 after binary conversion treatment is film leading section 10 using the Straight Line Identification being captured as light.In an embodiment of the present invention, preferably in the image after binary conversion treatment, from the conveyance direction downstream side of sheet light polarizing film 10 upstream side scan.This be because, in image, in the background of the conveyance direction downstream side of sheet light polarizing film 10, there are not parts, so downstream is really darker than other parts, by the part from darker, start scanning, can detect more effectively light is film leading section.
When detecting film leading section 10a in image, obtain the position (s5 of Fig. 9) of film leading section 10a.The position of film leading section 10a is in the image by taking in the above described manner at image acquisition equipment 203, to calculate the distance between predefined film reference position in the position of the film leading section 10a being caught in as the light on straight line and image to obtain.
When calculating the position of film leading section 10a, in the contraposition of sheet light polarizing film 10 and rectangular panel W, be carried out before laminating position in the situation that, obtain position poor of predefined laminating reference position and the film leading section 10a that is detected, make the advance distance (s6 of Fig. 9) of difference of above-mentioned position of sheet light polarizing film 10.In the contraposition of sheet light polarizing film 10 and rectangular panel W, be carry out in laminating position in the situation that, do not need this processing.
Figure 10 is illustrated in the experimental result that the Anawgy accuracy of sheet light polarizing film and rectangular panel in the situation of the detection method of using film leading section of the present invention improves effect.The longitudinal axis of the curve map of Figure 10 (a) is by sheet light polarizing film with respect to being shown " Anawgy accuracy " with the offset-lists of the design attitude (" 0 " on the longitudinal axis of curve map) of rectangular panel laminating, and transverse axis is for measuring the specimen coding of sample.
In Figure 10 (a), be expressed as the curve map of " before improvement " represented be, utilizing in the situation that detect existing structure 600(Fig. 4 of film leading section on peel-off device) detect the position of film leading section and make light polarizing film and rectangular panel laminating, the data of the Anawgy accuracy of each sample based on this position.On the other hand, be expressed as the curve map of " improve after " represented be, utilizing in the situation that the structure 700 of laminating position probing film leading section detects the position of film leading section and makes light polarizing film and rectangular panel laminating, the data of the Anawgy accuracy of each sample based on this position.What the note on the use 3,4,7,8 in the curve map of Figure 10 (a) was represented is, when observing on the throughput direction of sheet light polarizing film as shown in Figure 10 (b), the end (8 and 7 positions) at the end in the place ahead (3 and 4 positions) and rear is with respect to the data of the side-play amount of the design attitude on throughput direction.
Curve map from Figure 10, using in the situation that detect the existing structure of film leading section on peel-off device, be about ± 1.0mm of Anawgy accuracy maximum, and use of the present invention, in the situation that the structure of laminating position probing film leading section, within the scope of be controlled at approximately ± 0.5mm of Anawgy accuracy.In addition, in Figure 10, also show while observing on the throughput direction in sheet light polarizing film, the end of side (1,2,5,6 positions) are with respect to the data of the side-play amount of design attitude transversely.From this result, the structure of the application of the invention, with respect to the throughput direction of sheet light polarizing film, Anawgy accuracy transversely is also greatly improved.Its reason is as follows.That is,, when producing angular deflection between sheet light polarizing film 10 and rectangular panel W, rectangular panel W is corrected angle in the contraposition with sheet light polarizing film 10 is processed.In this case, rectangular panel W is after contraposition, for example to maintain the state of a certain angle (corrected angle) with respect to its long side direction, on throughput direction, move ahead, arrive laminating position, so, the side-play amount of film leading section 10a is larger, and laterally the side-play amount of (being the short side direction of rectangular panel W) is also larger.Therefore, by improving the Anawgy accuracy of film leading section, reduce side-play amount, can also improve horizontal Anawgy accuracy.The horizontal curve being expressed as in Figure 10 after improving understands this point.
Description of reference numerals
1 apparatus for continously production
10 sheet light polarizing film
10a film leading section
12 adhesive linkages
13 have the surface protection film of bonding plane
14 continuous band-shaped carrier film
16 incision lines
100 film feeding device
110 holder devices
120 reading devices
150 cutter sweeps
160 cutting positions are confirmed device
170 take-up mechanisms
200 laminating apparatus
201 peel-off devices
202 doubling rollers
203 image acquisition equipments
204 light sources
300 rectangular panel conveying devices
350 products panel conveying devices
400 control device
600 existing structures
700 structures of the present invention
Claims (14)
1. the method for continuous production of a products panel, it is characterized in that, that a plurality of sheet light polarizing film that are layered in via adhesive linkage on a face of continuous band-shaped carrier film are peeled off successively from described continuous band-shaped carrier film together with described adhesive linkage, and make described sheet light polarizing film in laminating position, utilize described adhesive linkage and rectangular panel laminating, thereby the method for the panel that manufactures a product continuously, comprising:
From described continuous band-shaped carrier film, peel off a part for described sheet light polarizing film, and make the film leading section of described sheet light polarizing film approach the step with the laminating position of rectangular panel laminating;
In a side of the face contrary with described adhesive linkage of described sheet light polarizing film, from the upstream side of the throughput direction of described sheet light polarizing film, to described film leading section, irradiate the step of light, the optical axis of this light forms acute angle with respect to the throughput direction of described sheet light polarizing film;
The region being irradiated by light to described sheet light polarizing film is taken, and obtains the step of image;
The luminosity of the picture of other parts beyond the picture of the described film leading section based on manifesting in described image and this film leading section poor, identifies the step of described film leading section;
The positional information of the described film leading section based on recognizing, makes the step of described sheet light polarizing film and described rectangular panel contraposition;
Make the step of described sheet light polarizing film and the laminating of described rectangular panel.
2. the method for continuous production of products panel as claimed in claim 1, is characterized in that,
Described rectangular panel is transported to described laminating position after the step that makes described sheet light polarizing film and described rectangular panel contraposition.
3. the method for continuous production of products panel as claimed in claim 1, is characterized in that,
Described rectangular panel is transported to described laminating position when making the step of described sheet light polarizing film and described rectangular panel contraposition.
4. the method for continuous production of products panel as claimed any one in claims 1 to 3, is characterized in that,
To described film leading section, irradiating in the step of light, to described film leading section irradiation optical axis, with respect to the throughput direction of described sheet light polarizing film, becoming to be less than the light of the angle of 45 °.
5. the method for continuous production of products panel as claimed any one in claims 1 to 3, is characterized in that,
Region illumination being mapped to from a side of the face contrary with described adhesive linkage of described sheet light polarizing film is taken.
6. the method for continuous production of products panel as claimed any one in claims 1 to 3, is characterized in that,
The step of identification film leading section comprises: from the direction of conveyance direction downstream side that is equivalent to described sheet light polarizing film to being equivalent to image described in the scanning direction of upstream side, the light in described image is identified as to described film leading section.
7. a detection system, it is characterized in that, be applied to a plurality of sheet light polarizing film that are layered in via adhesive linkage on a face of continuous band-shaped carrier film are peeled off successively from described continuous band-shaped carrier film together with described adhesive linkage, and make described sheet light polarizing film in laminating position, utilize described adhesive linkage and rectangular panel laminating, thereby in the device of the panel that manufactures a product continuously, for detect the film leading section of the described sheet light polarizing film being stripped from before laminating, this detection system has:
At least one light source, its side at the face contrary with described adhesive linkage of described sheet light polarizing film is irradiated light from the throughput direction upstream side of described sheet light polarizing film to described film leading section, and the optical axis of this light forms acute angle with respect to the throughput direction of described sheet light polarizing film;
At least one image acquisition equipment, its region being mapped to by described illumination to described sheet light polarizing film is taken and is obtained image;
Film leading section identification equipment, the luminosity of the picture of other parts beyond the picture of its described film leading section based on manifesting in described image and this leading section poor, identifies described film leading section.
8. detection system as claimed in claim 6, is characterized in that,
The throughput direction of described optical axis and described sheet light polarizing film forms the angle that is less than 45 °.
9. detection system as claimed in claim 6, is characterized in that,
The region that described image acquisition equipment is mapped to illumination from a side of the face contrary with described adhesive linkage of described sheet light polarizing film is taken.
10. detection system as claimed in claim 6, is characterized in that,
Film leading section identification equipment, from the direction of conveyance direction downstream side that is equivalent to described sheet light polarizing film to being equivalent to image described in the scanning direction of upstream side, is identified as described film leading section by the light in described image.
11. 1 kinds of detection methods, it is characterized in that, be applied to a plurality of sheet light polarizing film that are layered in via adhesive linkage on a face of continuous band-shaped carrier film are peeled off successively from described continuous band-shaped carrier film together with described adhesive linkage, and make described sheet light polarizing film in laminating position, utilize described adhesive linkage and rectangular panel laminating, thereby in the device of the panel that manufactures a product continuously, for detect the film leading section of the described sheet light polarizing film being stripped from before laminating, this detection method comprises:
In a side of the face contrary with described adhesive linkage of described sheet light polarizing film, from the throughput direction upstream side of described sheet light polarizing film, to described film leading section, irradiate the step of light, the optical axis of this light forms acute angle with respect to the throughput direction of described sheet light polarizing film;
The region being mapped to by described illumination of described sheet light polarizing film is taken and obtained the step of image;
The luminosity of the picture of other parts beyond the picture of the described film leading section based on manifesting in described image and this leading section poor, identifies the step of described leading section.
12. detection methods as claimed in claim 11, is characterized in that,
To described film leading section, irradiating in the step of light, to described film leading section irradiation optical axis, with respect to the throughput direction of described sheet light polarizing film, forming the light of the angle that is less than 45 °.
13. detection methods as claimed in claim 11, is characterized in that,
Region illumination being mapped to from a side of the face contrary with described adhesive linkage of described sheet light polarizing film is taken.
The method for continuous production of 14. products panels as claimed in claim 11, is characterized in that,
Film leading section identification step comprises: from the direction of conveyance direction downstream side that is equivalent to described sheet light polarizing film to being equivalent to image described in the scanning direction of upstream side, the light in described image is identified as to described film leading section.
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| JP2011-186708 | 2011-08-30 | ||
| JP2011186708A JP5022507B1 (en) | 2011-08-30 | 2011-08-30 | Product panel continuous manufacturing method, detection system, and detection method |
| PCT/JP2012/053221 WO2013031254A1 (en) | 2011-08-30 | 2012-02-13 | Method of continuously manufacturing a product panel and system and method of detecting the front edge of a film |
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| CN103765298B (en) | 2016-11-23 |
| JP5022507B1 (en) | 2012-09-12 |
| JP2013050475A (en) | 2013-03-14 |
| WO2013031254A1 (en) | 2013-03-07 |
| TWI531470B (en) | 2016-05-01 |
| KR20130106875A (en) | 2013-09-30 |
| TW201309482A (en) | 2013-03-01 |
| KR101551367B1 (en) | 2015-09-08 |
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