WO2014077040A1 - 光学的表示装置を製造する方法及び装置 - Google Patents
光学的表示装置を製造する方法及び装置 Download PDFInfo
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- WO2014077040A1 WO2014077040A1 PCT/JP2013/076471 JP2013076471W WO2014077040A1 WO 2014077040 A1 WO2014077040 A1 WO 2014077040A1 JP 2013076471 W JP2013076471 W JP 2013076471W WO 2014077040 A1 WO2014077040 A1 WO 2014077040A1
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- WIPO (PCT)
- Prior art keywords
- optical film
- film sheet
- panel member
- predetermined position
- pasting
- Prior art date
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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
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
- B32B37/025—Transfer laminating
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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
- B32B37/0046—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by constructional aspects of the apparatus
- B32B37/0053—Constructional details of laminating machines comprising rollers; Constructional features of the rollers
-
- 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
- B32B43/00—Operations specially adapted for layered products and not otherwise provided for, e.g. repairing; Apparatus therefor
- B32B43/006—Delaminating
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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
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
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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
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/08—Dimensions, e.g. volume
- B32B2309/10—Dimensions, e.g. volume linear, e.g. length, distance, width
- B32B2309/105—Thickness
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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
- B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
- B32B2457/202—LCD, i.e. liquid crystal displays
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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
- B32B2551/00—Optical elements
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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
- B32B37/0046—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by constructional aspects of the apparatus
-
- 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
- B32B38/10—Removing layers, or parts of layers, mechanically or chemically
Definitions
- the present invention relates to a method and apparatus for manufacturing an optical display.
- the present invention uses a release body having a top, and the carrier film is wound by winding a long web-like carrier film in a state in which the back side is turned inward at the top and wound around the release body.
- a plurality of optical film sheets continuously supported via the adhesive layer on one surface of the carrier are sequentially peeled from the carrier film together with the adhesive layer by the peeling action of the peeling body, and the adhesive layer is laminated by the bonding operation of the bonding roller.
- the present invention relates to a method and apparatus for manufacturing an optical display device by bonding to one surface of a panel member via the same.
- Patent Document 1 uses an exfoliated body having a top, and an optical film sheet supported on a carrier film together with a pressure-sensitive adhesive layer by winding up a long web-like carrier film whose back surface is folded back at the top.
- a method and apparatus for peeling from a film and bonding to a panel member Referring to FIG. 3 of the same document, it shows a plurality of optical film sheets X ⁇ , X ⁇ continuously supported on one side of the carrier film 13 via the adhesive layer 12, and also shown in FIG.
- the bonding station B where the bonding apparatus 200 including the edge detection device 190 and the bonding roller that detects the tip of the optical film sheet X ⁇ located on the top of the peeling body 201 is arranged, it is necessary to 13 is taken up, the optical film sheet X ⁇ is peeled off from the carrier film 13 together with the adhesive layer 12 by the peeling action of the peeling body 201, and a part of the device to be bonded to the panel member W is shown.
- Patent Document 2 an optical film sheet having a pressure-sensitive adhesive layer supported on a carrier film by winding a long web-like carrier film whose back side is folded back at the top using a release body having a top. And a method of and an apparatus for peeling off the carrier film from the carrier film and bonding it to a panel member.
- the tip of an optical film sheet F having an adhesive layer partially peeled off from the carrier film S by the top of the peelable body 14 is projected from the top of the peelable body 14,
- the bonding rollers 25 and 26 are operated to bond the optical film sheet F and the panel member W together. A portion of the device is shown.
- Patent Document 3 describes the position of the end of an optical film sheet (ie, a film piece) 5 having an adhesive surface formed on a carrier film (ie, a release film) 6 included in an optical film laminate (ie, a strip film) 4.
- a method and apparatus for correcting the position of the end of the optical film sheet 5 based on the position information detected and detected by the position detection means 18 is disclosed.
- liquid crystal display devices have been significantly expanded, and it has been required to manufacture and provide high quality liquid crystal display devices in large quantities. That is, in manufacture of a liquid crystal display device, the technique of sticking with high precision is calculated
- a slate PC higher processing power is required than a manufacturing system of a large-sized liquid crystal display device.
- Liquid crystal (LC) cells for TVs are small, 18 inches (450 mm) in size, and large, over 60 inches (1500 mm).
- the thickness is also three times or more 1.4 mm, and the weight is 300 to 3,500 g as compared with the liquid crystal cell of Slate PC.
- smartphones and tablet terminals are universally distributed in the market. These portable terminals are called slate PCs, and in many cases, medium-sized or small-sized liquid crystal display devices are used as optical display devices.
- a liquid crystal display panel used for these medium-sized or small-sized liquid crystal display devices generally includes an LC cell having a size of about 5 to 10 inches (120 to 250 mm) in contrast to the LC for TV.
- the color filter (CF) has a configuration in which the thin film transistor (TFT) is disposed on the non-viewing side, and the thickness is about 0.5 mm and the weight is about 15 to 40 g.
- a manufacturing system for a medium-sized or small-sized liquid crystal display device used for such a slate PC is required to have a higher processing capability than a liquid crystal display device manufacturing system for a TV.
- the pasting accuracy and production speed of the liquid crystal display panel and the optical film sheet including the polarizing film pasted on both sides thereof are required to have a performance which is doubled as compared with the production system of the liquid crystal display for TV.
- the liquid crystal display panel LC is about one third to one fifth of the large liquid crystal display device and one twentieth in weight This is smaller and lighter than large liquid crystal display devices.
- the roll of an optical film laminate based on a long web-like carrier film supporting an optical film sheet bonded to the liquid crystal display panel LC also has a narrow roll width and a weight of 1/3 to 10 minutes. It will be about one. The size thereof is, for example, about 500 mm in diameter, the roll width is about 100 to 150 mm, and the weight is 30 to 70 kg.
- Such an optical film laminate has a winding length of about 900 m.
- the production speed that is, the tact time
- the production speed is required to be about twice that of a large liquid crystal display device, and an optical film sheet such as a polarizing film supported by a carrier film bonded to the liquid crystal display panel LC
- the pasting accuracy is also required to be extremely strict.
- the technical problem of the present invention is to achieve the required application accuracy while maintaining the tact time required in the process of bonding the panel member and the optical film sheet, and is used, for example, for a slate PC. It is an object of the present invention to provide a method and apparatus for manufacturing an optical display device which can be applied also to middle-sized or small-sized liquid crystal display devices.
- a liquid crystal display panel to be a panel member used for a liquid crystal display device of a slate PC is not limited to this, but typically has two glass substrates with a liquid crystal layer L interposed therebetween,
- the liquid crystal (LC) cell is about 5 to 10 inches (120 to 250 mm) in size, about 0.5 mm in thickness, and about 15 to 40 g in weight.
- the tact time per panel member is limited to a certain extent, and the allowable pasting accuracy at that time is at least ⁇ 0.5 mm or less.
- Patent No. 4377965 gazette Patent No. 4361103 gazette Japanese Patent Application Publication No. 2004-333647
- An object of the present invention is to provide a method and apparatus for manufacturing an optical display device with high application accuracy.
- one of the carrier films is taken up by an operation of rolling up a long web-like carrier film which abuts on the top of the peeling body and the back surface is folded back.
- the leading end of the optical film sheet on which the cueing state is formed must be accurately positioned at the sticking predetermined position.
- the panel member and the optical film sheet are bonded to each other so that the optical film sheet is properly fitted to one surface of the panel member.
- the front end of the optical film sheet positioned at the sticking predetermined position is measured and confirmed, the front end position is appropriately corrected based on the front end position data, and the conveyance of the panel member is controlled, and one surface of the panel member is It is not always easy to fit the optical film sheet properly. The reason is that in many cases, the accuracy of the position data of the tip is different depending on where the tip of the optical film sheet is measured or where it can be measured to the tip of the optical film sheet. .
- the amount of protrusion of the tip of the optical film sheet is preferably about 5 mm to 100 mm from the top of the peeling body. More preferably, it is about 5 mm to 50 mm. Therefore, in order to reduce the sticking error, it is necessary to accurately position the tip of the optical film sheet at the sticking predetermined position.
- the technical problem mentioned above is in the state where the back side is turned inward at the top of the peeling body and is wound around the peeling body after the bonding of the preceding optical film sheet and the panel member is completed first Start the operation of winding up the carrier film, and the operation peels the optical film sheet from the carrier film together with the adhesive layer, advances the tip of the optical film sheet to position it properly at the pasting position, and then The front end is read, and based on the read position information of the front end, the front end of the optical film sheet is advanced or retracted by winding up or unwinding the carrier film to solve the problem by further positioning in the pasting position.
- “rolling up” the carrier film means sending the carrier film in the forward direction
- “rewinding” the carrier film means sending the carrier film in the reverse direction.
- the embodiment of the present invention is as follows.
- a plurality of optical film sheets 3 continuously supported via an adhesive layer 4 on one side of a long web-like carrier film 2 constituting an optical film laminate is used as an adhesive layer
- the optical film sheet 3 is bonded to one surface of the panel member 5 by the adhesive layer 4 using a pair of bonding rollers 50 and 51 which peel off from the carrier film 2 in sequence along with 4 and are opened and closed at the bonding predetermined position 100.
- the method is a first step of opening the bonding rollers 50 and 51 and switching to an inoperative state after the bonding of the one preceding optical film sheet and the one preceding panel member is completed at the predetermined bonding position 100.
- the adhesive film of the optical film sheet 3 is wound by winding the carrier film 2 in a state in which the other surface is turned inward at the top portion 61 constituting the tip of the release body 60 and wound around the release body 60.
- a second step of advancing the tip 31 of the optical film sheet 3 toward the sticking predetermined position 100 while peeling it from the carrier film 2 together with 4. More specifically, the second step is a step in which while the tip 31 of the optical film sheet 3 is peeled off, the tip 31 protrudes from the top 61 of the peeling body 60 and forms a cueing state toward the sticking predetermined position 100 .
- the method further stops the winding of the carrier film when the tip 31 of the optical film sheet 3 reaches the sticking predetermined position 100, activates the film tip detection means 70, and reads the tip 31 of the optical film sheet 3.
- the third step is included.
- the method also includes a fourth step of advancing the panel member 5 bonded to the optical film sheet 3 from the predetermined waiting position 300 toward the predetermined bonding position 100, and a predetermined bonding position at which the tip 31 of the optical film sheet 3 is held.
- the bonding rollers 50, 51 are closed and switched to the operating state, and the optical film sheet 3 is further taken from the carrier film 2 together with the adhesive layer 4 by winding up the carrier film 2.
- the pasting start position of the front end 31 of the optical film sheet 3 and the panel member 5 at the pasting predetermined position 100 You may make it correspond with 500.
- the third step can further include the step of reading the tip 31 of the optical film sheet 3 through the space 400 formed between the bonding rollers 50, 51.
- the third step further includes the step of causing the film tip detection means 70 to face the space 400 formed between the bonding rollers 50 and 51 and operating it to read the tip 31 of the optical film sheet 3
- the fifth step may further include the step of retracting the film leading edge detecting means 70 from the space 400.
- the third step advances the tip 31 of the optical film sheet 3 by winding or unwinding the carrier film 2 based on the position information 310 of the tip 31 read by the film tip detection means 70.
- the method may further include the step of retracting to further position the tip 31 of the optical film sheet 3 at the sticking predetermined position 100. More specifically, when the front end 31 of the optical film sheet 3 in which the cueing state is formed does not reach the pasting predetermined position 100 or stops at a position beyond the pasting predetermined position 100, In this step, the tip 31 is advanced or retracted to correct the deviation ( ⁇ ) from the sticking predetermined position 100.
- the carrier film 2 is moved while interlocking each of the forward and reverse feed rollers 80 and 81 disposed back and forth with the top portion 61 of the release body 60 interposed therebetween. It is preferable to take up or rewind without slack.
- the third step can be made to read both ends 311, 312 of the leading end surface 31 of the optical film sheet 3 orthogonal to the feeding direction of the carrier film 2.
- the film tip detection means 70 includes a plurality of imaging devices 71, 72 provided with measurement reference 700 for specifying the positions of both ends 311, 312 of the tip surface 31 of the optical film sheet 3.
- the second step may further include activating the imaging devices 71, 72 and locating the two ends 311, 312 based on the measurement reference 700.
- the fourth step can further include the step of detecting the panel member 5 carried into the standby predetermined position 300. More specifically, the panel member detection means 91 disposed at the predetermined standby position 300 can be operated to detect the panel member 5 at the predetermined predetermined position 300.
- the fourth step can further include the step of adjusting the position and attitude of the panel member 5 at the standby predetermined position 300. More specifically, it operates the panel member position adjusting device arranged at the standby predetermined position 300, and the position and posture of the panel member 5 conveyed by the panel member conveying means 90 toward the pasting predetermined position 100, This is a step of adjusting in advance at the standby predetermined position 300, that is, performing alignment with the panel member 5.
- the fourth step further includes the step of synchronizing with the optical film sheet 3 for advancing the panel member 5 advanced to the pasting predetermined position 100 toward the pasting predetermined position 100.
- a plurality of optical film sheets 3 continuously supported via the adhesive layer 4 on one side of the long web-like carrier film 2 constituting the optical film laminate is used as an adhesive layer It is an apparatus 10 which peels off from the carrier film 2 sequentially along with 4 and bonds the optical film sheet 3 to one side of the panel member 5 with the adhesive layer 4 at the sticking predetermined position 100 to manufacture the optical display device 6.
- the apparatus 10 is configured of the following apparatus. That is, it operates to bond the optical film sheet 3 to one surface of the panel member 5 by the adhesive layer 4 at the predetermined bonding position 100, and opens and closes the pair of bonding rollers 50 and 51, and the carrier film 2. By winding up, while peeling off the optical film sheet 3 from the carrier film 2 together with the adhesive layer 4, it constitutes a leading end that folds back the other surface of the carrier film 2 so as to advance it toward the sticking predetermined position 100.
- the film front end detection device 70 which operates to read the front end 31 of the optical film sheet 3 advanced to the pasting predetermined position 100 where the bonding rollers 50 and 51 are opened while the other surface is the top 61
- the carrier film feeding device 8 which operates in conjunction with the carrier film 2 in a state of being folded back and wound around the release body 60 without loosening the carrier film 2 toward the sticking predetermined position 100 Bonding roller 50, 51 including a panel member transport device 90 operable to advance the panel member 5 bonded to the advanced optical film sheet 3 from the predetermined waiting position 300 toward the predetermined bonding position 100; ,
- the adhesive film 4 is peeled off together with the adhesive layer 4 from the carrier film 2 by the peeling action of the front end 31 of the optical film sheet 3 advanced to the sticking predetermined position 100 and the panel member 5 conveyed toward the sticking predetermined position 100 is the sticking predetermined.
- the control means 800 starts pasting the front end 31 of the optical film sheet 3 and the panel member 5 at the pasting predetermined position 100. Control can be made to coincide with the position 500.
- the apparatus 10 switches the bonding rollers 50 and 51 to the inactive state and bonds them after the bonding of the one preceding optical film sheet 3 and the one preceding panel member 5 is completed.
- the rollers 50, 51 are opened, whereby the film leading edge detection device 70 is operated through the space 400 formed between the bonding rollers 50, 51, and the leading edge 31 of the optical film sheet 3 is read at the sticking predetermined position 100,
- the front end 31 of the optical film sheet 3 peeled off together with the adhesive layer 4 from the carrier film 2 and advanced to the sticking predetermined position 100 at the sticking predetermined position 100 and the panel member 5 reach the sticking predetermined position 100
- the closing rollers 50, 51 are closed and switched to the operating state, whereby the peeling action of the peeling body causes the optical film While further peeled off over preparative 3 from the carrier film 2 with the adhesive layer 4 can be an optical film sheet 3 and the panel member 5 as bonding through the adhesive layer 4.
- control means 800 starts pasting the front end 31 of the optical film sheet 3 and the panel member 5 at the pasting predetermined position 100. Control can be made to coincide with the position 500.
- the apparatus 10 is provided with the moving device 73 in the film leading edge detecting device 70, and after the bonding of the optical film sheet 3 preceding by one and the panel member 5 preceding by one is completed. , Switching the bonding rollers 50, 51 to the inoperative state and opening the bonding rollers 50, 51, thereby moving the film leading edge detection device by the moving device 73 into the space 400 formed between the bonding rollers 50, 51 70 is actuated to read the tip 31 of the optical film sheet 3 at the sticking predetermined position 100, and at the sticking predetermined position 100, the optical film peeled off together with the adhesive layer 4 from the carrier film 2 and advanced to the sticking predetermined position 100
- the moving device 73 The film leading end detection device 70 is retracted from the space 400, and the bonding rollers 50 and 51 close and switch to an operating state, thereby further peeling the optical film sheet 3 together with the adhesive layer 4 from the carrier film 2 And the panel
- control means 800 starts pasting the front end 31 of the optical film sheet 3 and the panel member 5 at the pasting predetermined position 100. Control can be made to coincide with the position 500.
- the carrier film feeding device 8 is operated and thereby the carrier film 2 is wound without slack
- the leading edge 31 of the optical film sheet 3 can be advanced or retracted by unwinding, and the leading edge 31 of the optical film sheet 3 can be further positioned at the pasting predetermined position 100. More specifically, in the device 10, when the leading end 31 of the optical film sheet 3 in which the cueing state is formed does not reach the pasting predetermined position 100 or stops at a position beyond the pasting predetermined position 100, The leading edge 31 of the film sheet 3 is advanced or retracted to correct the deviation ( ⁇ ) from the pasting predetermined position 100.
- the carrier film feeding device 8 can include forward and reverse feed rollers 80 and 81 disposed at the front and back of at least the top portion 61 of the release body 60.
- a dancer is disposed between one of the forward and reverse feed rollers 80 of the carrier film feeding device 8 composed of one of the forward and reverse feed rollers 80, the peeling body 60 and the other of the forward and reverse feed rollers 81 and the peeling body 60.
- a roller 82 can be arranged and cooperated with the other said reverse feed roller 81 so that the carrier film 2 can be taken up or unwound without slack.
- the film leading edge detection device 70 is provided with the measurement reference 700 disposed so as to be close to the positions corresponding to the both ends 311 and 312 of the leading edge surface 31 of the optical film sheet 3 orthogonal to the feeding direction.
- the image pickup devices 71 and 72 are activated to read the both ends 311 and 312 of the front end surface 31 of the optical film sheet 3 and the positions of the both ends 311 and 312 based on the measurement reference 700. Can be identified.
- the panel member detection device 91 for detecting the panel member 5 is disposed at the standby predetermined position 300, and the control means 800 operates the panel member detection device 91 and is carried to the standby predetermined position 300.
- the panel member 5 can be detected.
- the panel member position adjusting device 92 is disposed at the standby predetermined position 300, and the control means 800 operates the panel member position adjusting device 92 to direct the panel member conveying device 90 to the sticking predetermined position 100.
- the position and posture of the panel member 5 to be transported can be adjusted in advance at the standby predetermined position 300.
- control means 800 interlocks the panel member transport device 90 and the forward and reverse feed rollers 80 and 81 and advances the panel member 5 to advance to the pasting predetermined position 100 and to the pasting predetermined position 100.
- the optical film sheet 3 may be synchronized with the optical film sheet 3.
- FIG. 1 It is the top view and side view which show an example of the optical film laminated body which contains several optical film sheet
- (A) and (b) of FIG. 1 are optical films laminated together with an adhesive layer on one side of a long web-like carrier film having a width that fits the rectangular long side or short side of the panel member.
- 6 illustrates an example of an optical film laminate in which a plurality of optical film sheets supported continuously by forming a plurality of incisions is formed.
- (c) of FIG. 1 is a schematic diagram showing each positional relationship which is made to make the sticking start position of a panel member correspond to the front-end
- FIG. (A) of FIG. 3 is a schematic view from the side of a carrier film feeding mechanism in which the elongated carrier film 2 is wound or unwound via a peeling body having a top.
- FIG. 3 is the schematic diagram which expanded the positional relationship of the bonding roller and the top part which comprises a peeling body in the sticking predetermined position, and was seen from the side.
- FIG.5 (a) is an enlarged view showing the state which a film front-end detection apparatus reads the front-end
- FIG.5 (b) is an enlarged view showing the state which makes a film front-end detection apparatus face the space formed between the bonding rollers open
- FIG.5 It is a schematic diagram showing each of the operation
- FIG. 10 is a diagram illustrating an example of an experimental system for determining It is a table
- FIG. 2 is a top view and a side view showing the whole of an apparatus 10 for manufacturing the optical display device 6 by bonding the optical film sheet 3 and the panel member 5 at the predetermined bonding position 100 shown in FIG. It is.
- the optical film sheet 3 including the adhesive layer 4 is in the form of a long web which constitutes the optical film laminate 1 having a width that fits to the rectangular long side or short side of the panel member 5. It is formed by making a plurality of incisions in the optical film 3 'laminated with the adhesive layer 4' on one side of the carrier film 2.
- the device 10 used in one embodiment of the present invention may be, for example, a device constituting part of a manufacturing system of a liquid crystal display device of a slate PC, although not limited thereto.
- the manufacturing system is not limited to this, but has a straight path, and the size of the path is assumed to be about 210 to 550 mm in width and about 5000 to 6000 mm in length.
- the straight path is preferably a height at which the operator can visually recognize the panel member 5 fed from the right end of the path, and at the left end, an height at which the roll R of the optical film laminate 1 can be mounted
- the height at which the state of forming the cutting line can be visually recognized is set. The height of these can be about 1000 to 1500 mm, and the height of the entire device can be about 2500 mm.
- the cutting device A is omitted when using the optical film laminate 1 in which the optical film sheet 3 is formed in advance together with the adhesive layer 4 on one surface of the long web-shaped carrier film 2.
- the apparatus 10 is placed in a clean room as is known to those skilled in the art. Furthermore, in a clean room, preferably, the manufacturing system is covered with a box-shaped container having an operating door or window to have a high level of cleanliness. That is to eliminate as much as possible adhesion of dust and the like caused by the operator and the operator to the adhesive layer 4 of the optical film sheet 3 bonded to one side or both sides of the panel member 5.
- FIG. 3 is a schematic diagram showing the relationship with each apparatus arrange
- (a) shows a mechanism in which the elongated carrier film 2 is wound up or unwound via a peeling body 60 having a top portion 61, that is, a carrier film feeding mechanism, as described later.
- the optical film sheet 3 is, as described in detail later, the carrier film 2 in a state in which the back surface is folded back inside by the top 61 forming the tip of the release body 60 together with the adhesive layer 4.
- the film tip detection device 70 which reads the tip 31 of the optical film sheet 3 just before being bonded to the panel member 5, and the panel member 5 is conveyed from the standby predetermined position 300 toward the predetermined position 100.
- a panel member transport 90 is shown.
- FIG.3 (b) is the schematic diagram which expanded and represented the positional relationship of the bonding rollers 50 and 51 and the peeling body 60 which has the top part 61 in the sticking predetermined position 100.
- FIG. It also positions the tip 31 of the optical film sheet 3 supported by the carrier film 2 in a state of being wound around the release body 60 at the sticking predetermined position 100 in a protruding state projecting from the release body 60 and reads the tip 31 The positional relationship with the film leading edge detection device 70 is shown.
- the sticking start position 500 of the panel member 5 is made to coincide with the leading end 31 of the optical film sheet 3 in which the cueing state is formed from the top 61 at the sticking predetermined position 100.
- the tip 31 of the optical film sheet 3 in which the top 61 of the release body 60 preferably has a head-out state of about 5 mm to 100 mm, more preferably about 5 mm to 50 mm from the top 61 of the release body 60 by the peeling action.
- the tip 31 of the optical film sheet 3 In order to match the position of the panel member 5 being conveyed and the application start position 500 of the panel member 5 to be conveyed, an operation to accurately read the tip 31 of the optical film sheet 3 must first be ensured. Next, based on the position information 310 of the tip 31 read, the tip 31 of the optical film sheet 3 is positioned at the predetermined pasting position 100 by fine adjustment by winding or unwinding the carrier film 2 as appropriate, and the panel member 5 is The timing of sending must be controlled.
- FIG. 4 is one embodiment of a film tip detection apparatus 70 that makes it possible. That is, two imaging devices 71 provided with measurement reference 700 (see FIG. 6A (f)) at positions corresponding to both ends 311, 312 of the tip 31 of the optical film sheet 3 orthogonal to the feed direction of the carrier film 2. 7 is a film leading edge detection device 70 in which 72 are disposed.
- the method of manufacturing the optical display device 6 of the present invention comprises the steps of operating the tip 31 of the optical film sheet 3 at each of the predetermined bonding position 100 and the delivery position of the peeling body 60 shown in FIGS. 6A and 6B (a )-Characterized by (e).
- the delivery position of the release body 60 usually coincides with the top portion 61 of the release body 60.
- the reason is that the front end 31 of the optical film sheet 3 supported by the carrier film 2 immediately after the preceding bonding of the optical film sheet 3 and the panel member 5 is positioned in a state of being held by the top 61 of the release body 60 It is.
- the leading end 31 of the optical film sheet 3 to be subsequently bonded to the panel member 5 is once retracted to the delivery position 200 provided on the upstream side of the top 61 of the release body 60. It can also be positioned.
- FIG. 6A a space 400 formed between the bonding rollers 50 and 51 opened in the vertical direction is formed. It is an apparatus 10 which manufactures the optical display apparatus 6 which made the film front-end detection apparatus 70 read the front-end
- the operation step (a) shows the state immediately after the preceding bonding of the optical film sheet 3 and the panel member 5.
- the bonding rollers 50, 51 sandwich the rear end portion of the preceding optical display device 6 immediately after bonding.
- the optical film sheet 3 which is supported by the carrier film 2 in a state where the carrier film 2 is wound around the release body 60 and is then bonded to the panel member 5 is formed on the release body 60 together with the adhesive layer 4.
- the tip 31 is positioned with the top 61 of the peeling body 60 held.
- the operation step (b) supports the carrier film 2 in a state of being held on the top portion 61 of the release body 60 by winding up without loosening the carrier film 2 in a state of being wound around the release body 60
- the feed operation of the optical film sheet which advances the tip 31 of the optical film sheet 3 which has been carried out to the sticking predetermined position 100 is shown.
- the tip 31 of the optical film sheet 3 is temporarily retracted to the delivery position 200 provided on the upstream side of the top 61 of the peeling body 60, and thereafter advanced to the sticking predetermined position 100. You can also.
- the back feed operation is positioned as a step of adjusting in advance the difference in tension generated in the carrier film 2 across the top 61 of the release body 60.
- the tension of the carrier film 2 immediately after pasting causes a difference between the front and back with the top 61 of the release body 60 as a boundary. Due to this, an error is likely to occur in the stroke of the optical film sheet 3 in which the cueing state is formed. Therefore, it is necessary to make the tension of the carrier film 2 the same before and after the top 61 of the peeling body 60.
- the force f for peeling the optical film sheet 3 from the carrier film 2 is the tensile force f1 on the optical film sheet 3 by the bonding rollers 50 and 51, and the carrier It is assumed that the combined force with the tensile force f2 required to peel the optical film sheet 3 from the carrier film 2 by winding up the film 2.
- the force f3 for peeling off the optical film sheet 3 in which the cueing state is formed is only the tensile force necessary to peel the optical film sheet 3 from the carrier film 2 by winding the carrier film 2.
- the operation step (c) shows an operation in which the tip 31 of the optical film sheet 3 positioned at the sticking predetermined position 100 by the optical film sheet feeding operation is read by the film tip detection device 70.
- the feeding operation of the carrier film 2 to advance to the sticking predetermined position 100.
- One is a feeding operation for advancing the tip 31 of the optical film sheet 3 without considering the sticking predetermined position 100.
- a method of performing the feeding operation so as to fall within the imaging range shown in FIG. 6A (f) or FIG. 6B (f) is also performed in the feeding operation not considering the pasting predetermined position 100, and performing the feeding operation beyond the imaging range.
- it is a method of advancing the tip 31 of the optical film sheet 3 at a stretch toward the sticking predetermined position 100 at a stretch and stopping it.
- the other one is a feeding operation of gradually advancing the tip 31 of the optical film sheet 3 toward the sticking predetermined position 100.
- this feeding operation whether or not the leading end 31 of the optical film sheet 3 has been properly positioned at the sticking predetermined position 100 is confirmed by the film leading end detection device 70.
- the carrier film 2 is used. Fine adjustments have to be made to advance or retract by winding or unwinding. Operation step (d) illustrates this fine tuning.
- the leading end 31 of the optical film sheet 3 is temporarily retracted to the delivery position 200 provided on the upstream side of the top 61 of the release body 60 by the top 61 or the back feeding operation, and then the feeding operation is started.
- the amount of projection by the feeding operation is preferably about 5 mm to about 100 mm, more preferably about 5 mm to about 50 mm, from the top portion 61 of the peeling body 60 between the top portion 61 and the predetermined bonding position 100.
- the delivery position 200 is provided on the upstream side of the top 61, for example, about 5 mm to 10 mm will be further added between the delivery position 200 and the top 61.
- the front end of the optical film sheet 3 in which the panel member 5 is conveyed toward the pasting predetermined position 100 and the pasting start position 500 of the panel member 5 is in a pointed state. If it matches 31, the optical film sheet 3 and the panel member 5 are bonded via the adhesive layer 4 while the optical film sheet 3 is further peeled off from the carrier film 2 together with the adhesive layer 4 by the peeling action of the peeling body 60. Therefore, as apparent from the flowchart of FIG. 7, the control device 800 of the present apparatus 10 performs the bonding operation of the bonding rollers 50 and 51, the operation of the film leading edge detection device 70, and the carrier of the forward and reverse feed rollers 80 and 81.
- the operation of winding or rewinding the film 2 and the operation of the panel member transport device 90 are controlled in association with each other.
- a dancer roller or the like may be used as the film feeding device 8, or a combination of forward and reverse feed rollers 80 and 81 and a dancer roller may be used.
- the method of manufacturing the optical display device 6 of the present invention by the device 10 in which the bonding rollers 50 and 51 configured to open and close in the vertical direction at the bonding predetermined position 100 is also As shown in FIG. 6A or FIG. 6B, a sticking predetermined position 100 for arranging the bonding rollers 50 and 51 which open and close in the vertical direction, and a delivery position 200 provided on the top 61 of the peeling body 60 or on the upstream side are also characterized by the operating steps (a) to (e) of the tip 31 of the optical film sheet 3 in each of the above.
- the optical film sheet 3 is in a state in which the back surface is folded inward at the top 61 forming the tip of the peeling body 60 together with the adhesive layer 4 and wound around the peeling body 60.
- a film tip detector 70 is shown operative to read the tip 31 of the optical film sheet 3 of
- the film tip detection device 70 is moved by a moving device 73 with a built-in servomotor, for example, in a space 400 formed between the bonding rollers 50 and 51 which are inactivated and opened in the vertical direction.
- the film tip detection device 70 which operates to read the tip 31 is shown.
- the film leading edge detection device 70 is moved by the moving device 73 immediately before the bonding operation of the panel member 5 and the optical film sheet 3 at the predetermined bonding position 100 as described later. It retreats from 400 and the bonding rollers 50 and 51 are closed vertically.
- the apparatus 10 shown in FIG. 5 (a) is, as shown in the operation steps (a) to (e) of FIG. 6A, bonding of the optical film sheet 3 preceding by one and the panel member 5 preceding by one.
- the bonding rollers 50, 51 are switched to the inactive state and opened up and down with respect to their feed direction, whereby the film through the space 400 formed between the bonding rollers 50, 51
- the tip detection device 70 is operated to read the tip 31 of the optical film sheet 3 supported by the carrier film 2.
- the method by such an apparatus 10 raises and lowers the bonding rollers 50 and 51 when the sticking start position 500 of the panel member 5 and the leading end 31 of the optical film sheet 3 in which the cueing state is formed at the sticking predetermined position 100 coincide.
- the optical film sheet 3 and the panel member 5 are closed while the optical film sheet 3 and the panel member 5 are further peeled off from the carrier film 2 together with the adhesive layer 4 by the peeling action of the peeling body 60 while closing in the direction Let it be pasted together.
- control device 800 of the device 10 opens and closes the bonding rollers 50 and 51 in the vertical direction and performs the bonding operation, the operation of the film leading edge detection device 70, and the forward and reverse feed roller 80. , 81, and controls the operation of winding or unwinding the carrier film 2 and the operation of the panel member transport device 90 in association with each other.
- the flowchart of FIG. 7 is a panel from the operation step (b) in which the front end 31 of the optical film sheet 3 is positioned at the predetermined bonding position 100 by the operation of opening the bonding rollers 50 and 51 and the back feeding operation of the carrier film 2 Immediately before the operation step (e) in which the sticking start position 500 of the panel member 5 is made to coincide with the tip 31 of the optical film sheet 3 which is conveyed toward the sticking predetermined position 100 and brought into the heading state
- the apparatus 10 shown in FIG. 5 (b) also uses, for example, a film leading edge detector 70 equipped with a moving device 73 with a built-in servomotor, as shown in operation steps (a) to (e) of FIG. 6B.
- the method by such an apparatus 10 detects the film tip by the moving device 73 when the sticking start position 500 of the panel member 5 and the tip 31 of the optical film sheet 3 in which the cueing state is formed at the sticking predetermined position 100 coincide.
- the device 70 is retracted from the space 400, and the bonding rollers 50, 51 close in the vertical direction and switched to the operating state, thereby further separating the optical film sheet 3 from the carrier film 2 together with the adhesive layer 4 by the peeling action of the peeling body 60. While peeling off, the optical film sheet 3 and the panel member 5 are bonded via the adhesive layer 4.
- the control device 800 of the device 10 is the opening / closing operation and bonding operation of the bonding rollers 50 and 51 in the vertical direction, the film tip detection device 70 associated with the moving device 73.
- the operation, the operation of winding or unwinding the carrier film 2 of the forward and reverse feed rollers 80, 81, and the operation of conveying the panel members by the panel member conveying device 90 are controlled in association with each other.
- the method of manufacturing the optical display device 6 by the device 10 having the bonding rollers 50 and 51 configured to be opened and closed vertically at the predetermined bonding position 100 is, in any case, the reading or detection of the tip 31 Since it is possible to form a cueing state of the tip 31 of the optical film sheet 3 in the pasted predetermined position 100 where the panel member 5 sticking start position 500 is matched with the tip 31 of the optical film sheet 3 It also has the feature of becoming easier.
- the method shown in FIG. 6A or FIG. 6B is characterized by the operation steps (a) to (e) of the tip 31 of the optical film sheet 3 at the sticking predetermined position 100.
- the film tip detection device 70 is operated through the space 400 formed between the bonding rollers 50 and 51 so that the tip 31 of the optical film sheet 3 is read.
- 7 represents an operation step of the tip 31 of the optical film sheet 3 at the position 100.
- the moving device 73 incorporated with a servomotor is operated to move the film leading edge detecting device 70 to the space 400 formed between the bonding rollers 50 and 51. And represents an operation step of the tip 31 of the optical film sheet 3 at the sticking predetermined position 100 so as to be operated in a close-up state by the tip 31 of the optical film sheet 3 and read the tip 31.
- the leading edge 31 of the optical film sheet 3 positioned at the sticking predetermined position 100 by the feeding operation of the carrier film 2 is switched to the inoperative state and the bonding roller opened vertically.
- the film tip detection device 70 operates to read through the space 400 formed between 50 and 51.
- the sticking start position 500 of the panel member 5 coincides with the tip 31 of the optical film sheet 3 in which the cueing state is formed. When it does, it operates so that the bonding roller 50, 51 may be closed to an up-down direction, and it may switch to an operation state.
- the moving device 73 is operated to make the film leading edge detecting device 70 face the space 400 formed between the bonding rollers 50 and 51, and the optical film sheet 70
- the tip 31 is operated in a close-up state by the tip 31 to operate the tip 31 to read the tip 31.
- the sticking start position 500 of the panel member 5 coincides with the tip 31 of the optical film sheet 3 in which the cueing state is formed.
- the film leading end detection device 70 is retracted from the space 400, and the bonding rollers 50, 51 are closed vertically and switched to the operating state.
- FIG. 8 is a schematic view showing the structure of the top portion 61 constituting the tip of the peeling body 60.
- the curvature radius R is so optical that the reaction force of the bending rigidity of the optical film sheet 3 exceeds the peeling force Z of the carrier film 2 to the adhesive layer 4 It is determined by the relative relationship between the thickness X of the film sheet 3 and the peeling force Z of the carrier film 2 with respect to the adhesive layer 4.
- the radius of curvature R have a diameter equal to or greater than a predetermined value as shown in FIG. 8 (a) or have a rotating body structure as shown in FIG. 8 (b).
- the optical film laminate 1 comprises a plurality of optical film sheets 3 continuously supported on one surface of a long web-like carrier film 2 via an adhesive layer 4.
- the plurality of optical film sheets 3 continuously supported by the carrier film 2 have the peeling action of the peeling body 60 having the top 61 in contact with the other surface of the carrier film 2, that is, the peeling body 60.
- the reaction force of the bending rigidity of the optical film sheet 3 by the top portion 61 having the curvature radius R exceeds the peeling force Z of the carrier film 2 to the adhesive layer 4 and the optical film sheet 3 together with the adhesive layer 4 Is gradually removed from its tip 31.
- This is determined by the relative relationship between the radius of curvature R of the top portion 61, the thickness X of the optical film sheet 3, and the peeling force Z of the carrier film 2 with respect to the adhesive layer 4.
- the optical film sheet 3 is referred to as a "substrate" in the experimental system.
- the curvature radius R of the peeling body top 61 is determined based on the relative relationship between the thickness X of the base material and the peeling force Z of the carrier film with respect to the adhesive layer 4.
- One example of the relative relationship is shown below.
- the experimental system implemented in FIG. 9 is shown.
- an optical film laminate 1 in which a substrate 3 having an adhesive layer 4 having a length in the longitudinal direction shorter than that of the carrier film 2 is releasably laminated on the carrier film 2 is
- the back surface of the carrier film 2 is brought into contact with the top portion 61 of the peeling body 60 having the radius of curvature R which is the peeling point, and only the carrier film 2 and the portion where the substrate 3 having the carrier film 2 and the adhesive layer 4 is laminated
- the end of the carrier film 2 is wound so that the boundary of the part of the part is positioned upstream of the top 61 having a radius of curvature R, and the top 61 abuts the back with a guide roller, and at a constant speed upward Pull up.
- the boundary between the portion on which the substrate 3 having the carrier film 2 and the adhesive layer 4 is laminated and the portion of the carrier film 2 alone has a radius of curvature R.
- peeling and non-peeling occur depending on the magnitude relationship between the reaction force of the bending rigidity of the base material 3 and the peeling force of the carrier film to the adhesive layer 4, that is, the magnitude relationship of R. .
- the substrate 3 peels at the peeling point was examined in the case where the curvature radius R of the top portion 61 was variously changed.
- the substrates used in the experiment are VEGQ 1723 NTB (213 ⁇ m in thickness), CIG 1484 CV AG 350 (131 ⁇ m in thickness), polarizing plate made by Nitto Denko Corp., and PET T- made by Mitsubishi Resins Co., Ltd. focusing on differences in rigidity (thickness). Three samples of 390 (38 ⁇ m), each 50 mm wide, were used.
- thickness X is a numerical value of an optical film sheet in which adhesion layer 4 is not formed.
- bending rigidity is calculated from the elastic modulus of the base material 3
- the film generally used for a liquid crystal display element is synthetic resin, and there is no big difference in those elastic modulus. Therefore, the magnitude of the bending stiffness is approximately determined by the thickness.
- the substrate 3 having a thickness of 213 ⁇ m can be peeled off when the curvature radius R is 22.5 mm or less, but incomplete peeling or non-peeling can be performed at 25.0 mm.
- peeling is possible at 7.5 mm or less, but incomplete peeling or non-peeling is possible at 10.0 mm.
- peeling is possible at 1.5 mm or less, but incomplete peeling or non-peeling is possible at 2.0 mm.
- FIG. 11 shows the relationship between the thickness X of the base material 3 and the limit R which does not peel off.
- the substrate 3 having the adhesive layer 4 in the upper region bordering the line shown in FIG. 11 can not be peeled off.
- the base material 3 having the adhesive layer 4 in the lower region can be peeled off. That is, this line becomes a peeling availability line.
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Abstract
Description
本発明の第1の態様は、光学フィルム積層体を構成する長尺ウェブ状のキャリアフィルム2の一方の面に粘着層4を介して連続的に支持された複数の光学フィルムシート3を粘着層4と共にキャリアフィルム2から順次剥離し、貼付所定位置100において、開閉する一対の貼合ローラ50、51を用い、光学フィルムシート3を粘着層4によってパネル部材5の一方の面に貼り合わせて光学的表示装置6を製造する方法である。
第1実施態様において、第4ステップは、待機所定位置300においてパネル部材5の位置および姿勢を調整するステップをさらに含むことができる。それは、より具体的には、待機所定位置300に配置されたパネル部材位置調整装置を作動させ、パネル部材搬送手段90によって貼付所定位置100に向けて搬送されるパネル部材5の位置および姿勢を、待機所定位置300において予め調整する、すなわち、パネル部材5に対するアライメントを行うステップである。
第2実施態様において、待機所定位置300にパネル部材位置調整装置92が配置されており、制御手段800は、パネル部材位置調整装置92を作動させ、パネル部材搬送装置90によって貼付所定位置100に向けて搬送されるパネル部材5の位置および姿勢を、待機所定位置300において予め調整するようにすることができる。
図2は、図3(b)に示される貼付所定位置100において、光学フィルムシート3とパネル部材5とを貼り合せて光学的表示装置6を製造する装置10の全体を表す上面図及び側面図である。粘着層4を含む光学フィルムシート3は、図1に示されるように、パネル部材5の矩形状の長辺又は短辺に適合する幅を有する光学フィルム積層体1を構成する長尺ウェブ状のキャリアフィルム2の一方の面に粘着層4’と共に積層された光学フィルム3’に複数の切込を入れることによって、形成される。
光学フィルム積層体1は、長尺ウェブ状キャリアフィルム2の一方の面に粘着層4を介して連続的に支持された複数の光学フィルムシート3からなる。キャリアフィルム2に連続的に支持された複数の光学フィルムシート3は、キャリアフィルム2の他方の面すなわち裏面に当接する頂部61を有する剥離体60の剥離作用、具体的には、剥離体60に巻き掛けられた状態にある光学フィルム積層体1を弛むことなく巻き取ることによって、頂部61がキャリアフィルム2に粘着層4と共に支持された複数の光学フィルムシート3を形成する切込線の裏面に相当する位置に達したときに、曲率半径Rを有する頂部61による光学フィルムシート3の曲げ剛性の反力が粘着層4に対するキャリアフィルム2の剥離力Zを上回り、粘着層4と共に光学フィルムシート3がその先端31から徐々に剥がされる。これは、頂部61の曲率半径Rと、光学フィルムシート3の厚みXと、粘着層4に対するキャリアフィルム2の剥離力Zとの相対関係によって決まる。以下、光学フィルムシート3は、実験系において、「基材」という。
2 キャリアフィルム
3’光学フィルム
3 光学フィルムシート
31 光学フィルムシートの先端
310 先端の位置情報
311、312 光学フィルムシートの先端面の両端
4’ 光学フィルムに含まれる粘着層
4 光学フィルムシートに含まれる粘着層
5 パネル部材
500 パネル部材の貼付開始位置
6 光学的表示装置
10 光学的表示装置を製造する装置
50、51 貼合ローラ
60 剥離体
61 剥離体の頂部
70 フィルム先端検出装置
71、72 撮像装置
73 移動装置
8 キャリアフィルム送り装置
80、81 正逆転フィードローラ
82 ダンサーローラ
100 貼付所定位置
300 待機所定位置
400 空間
800 制御装置
A 切断装置
Claims (24)
- 光学フィルム積層体を構成する長尺ウェブ状のキャリアフィルムの一方の面に粘着層を介して連続的に支持された複数の光学フィルムシートを前記粘着層と共に前記キャリアフィルムから順次剥離し、貼付所定位置において、開閉する一対の貼合ローラを用い、前記光学フィルムシートを前記粘着層によってパネル部材の一方の面に貼り合わせて光学的表示装置を製造する方法であって、
前記貼付所定位置において、1つ先行する光学フィルムシートと1つ先行するパネル部材との貼り合せが完了した後に、前記貼合ローラを開放すると共に非作動状態に切り替える第1ステップと、
剥離体の先端部を構成する頂部において他方の面が内側に折り返されて前記剥離体に巻き掛けられた状態にある前記キャリアフィルムを巻き取ることによって、前記光学フィルムシートを前記粘着層と共に前記キャリアフィルムから剥がしながら、前記光学フィルムシートの先端を前記貼付所定位置に向けて前進させる第2ステップと、
前記光学フィルムシートの先端が前記貼付所定位置に達したときに、前記キャリアフィルムの巻き取りを停止し、フィルム先端検出手段を作動し、前記光学フィルムシートの先端を読み取る第3ステップと、
前記光学フィルムシートに貼り合される前記パネル部材を待機所定位置から前記貼付所定位置に向けて前進させる第4ステップと、
前記光学フィルムシートの先端が保持された貼付所定位置に前記パネル部材が達したときに、前記貼合ローラを閉じると共に作動状態に切換え、且つ前記キャリアフィルムを巻き取ることによって、前記光学フィルムシートを前記粘着層と共に前記キャリアフィルムからさらに剥がしながら、前記光学フィルムシートと前記パネル部材とを前記粘着層を介して貼り合せる第5ステップと
を含むことを特徴とする方法。 - 請求項1に記載の方法において、前記パネル部材と前記光学フィルムシートの先端とが前記貼付所定位置に達したときに、前記貼付所定位置において前記光学フィルムシートの先端と前記パネル部材の貼付開始位置とを一致するようにしたことを特徴とする方法。
- 請求項1又は2のいずれかに記載の方法において、前記第3ステップは、前記貼合ローラ間に形成された空間を通して前記光学フィルムシートの先端を読み取るようにしたことを特徴とする方法。
- 請求項1又は2のいずれかに記載の方法において、前記第3ステップは、前記貼合ローラ間に形成された空間に前記フィルム先端検出手段を臨ませ、前記光学フィルムシートの先端を読み取るように作動させ、それにより、前記第5ステップは、前記フィルム先端検出手段を前記空間から退避させるようにしたことを特徴とする方法。
- 請求項1から4のいずれかに記載の方法において、前記第3ステップは、前記フィルム先端検出手段によって読み取られた前記先端の位置情報に基づき、前記キャリアフィルムを弛めることなく巻き取るか又は巻き戻すことによって前記光学フィルムシートの先端を前進又は後退させ、前記光学フィルムシートの先端を前記貼付所定位置にさらに位置決めするようにしたことを特徴とする方法。
- 請求項1から5のいずれかに記載の方法において、前記第2及び第5ステップは、前記剥離体の前記頂部を挟んで前後に配置された正逆転フィードローラを含むキャリアフィルム送り手段を作動させ、前記キャリアフィルムを弛めることなく前記キャリアフィルムを巻き取るか又は巻き戻すようにしたことを特徴とする方法。
- 請求項1から6のいずれかに記載の方法において、前記第3ステップは、前記キャリアフィルムの送り方向に直交する前記光学フィルムシートの先端面が有する両端を読み取るようにしたことを特徴とする方法。
- 請求項1から7のいずれかに記載の方法において、前記フィルム先端検出手段は、前記光学フィルムシートの先端面が有する両端のそれぞれの位置を特定する計測基準を備えた複数の撮像装置を含むものであり、前記第3ステップは、前記撮像装置を作動させ、前記計測基準に基づいて前記両端の位置を特定するステップをさらに含むことを特徴とする方法。
- 請求項1から8のいずれかに記載の方法において、前記第4ステップは、前記待機所定位置に搬入される前記パネル部材を検出するステップをさらに含むことを特徴とする方法。
- 請求項1から9のいずれかに記載の方法において、前記第4ステップは、前記貼付所定位置に向けて搬送される前記パネル部材の位置および姿勢を、前記待機所定位置において予め調整するステップをさらに含むことを特徴とする方法。
- 請求項1から10のいずれかに記載の方法において、前記第4ステップは、前記貼付所定位置に向けて前進させる前記パネル部材を前記貼付所定位置に向けて前進させる前記光学フィルムシートに同期させるステップをさらに含むことを特徴とする方法。
- 光学フィルム積層体を構成する長尺ウェブ状のキャリアフィルムの一方の面に粘着層を介して連続的に支持された複数の光学フィルムシートを前記粘着層と共に前記キャリアフィルムから順次剥離し、貼付所定位置において、前記光学フィルムシートを前記粘着層によってパネル部材の一方の面に貼り合せ、光学的表示装置を製造する装置であって、
前記貼付所定位置において、前記光学フィルムシートを前記粘着層によって前記パネル部材の一方の面に貼り合せるように作動する、開閉する一対の貼合ローラと、
前記キャリアフィルムを巻き取ることによって、前記光学フィルムシートを前記粘着層と共に前記キャリアフィルムから剥がしながら、前記貼付所定位置に向けて前進させるように作用する、前記キャリアフィルムの他方の面を内側に折り返す先端部を構成する頂部と前記キャリアフィルムを巻き掛ける本体とを含む、剥離体と、
前記剥離体の先端部を構成する頂部で他方の面が内側に折り返されて前記剥離体に巻き掛けられた状態にある前記キャリアフィルムを巻き取ることによって、前記光学フィルムシートを前記粘着層と共に前記キャリアフィルムから剥がしながら、前記貼合ローラが開放された前記貼付所定位置にまで前進させた前記光学フィルムシートの先端を読み取るように作動する、フィルム先端検出装置と、
前記頂部で他方の面が内側に折り返されて前記剥離体に巻き掛けられた状態の前記キャリアフィルムを弛めることなく巻き取るか又は巻き戻すように作動する、キャリアフィルム送り装置と、
前記貼付所定位置に向けて前進させた前記光学フィルムシートに貼り合される前記パネル部材を待機所定位置から前記貼付所定位置に向けて前進させるように作動する、パネル部材搬送装置と、
前記貼合ローラ、前記フィルム先端検出装置、前記キャリアフィルム送り装置、及び、前記パネル部材搬送装置のそれぞれを関連付け、前記剥離体の剥離作用により、前記キャリアフィルムから前記粘着層と共に剥がされて前記貼付所定位置に向けて前進された前記光学フィルムシートの先端と前記貼付所定位置に向けて搬送された前記パネル部材とが当該貼付所定位置に達したときに、前記光学フィルムシートを前記粘着層と共に前記キャリアフィルムからさらに剥がしながら、前記光学フィルムシートと前記パネル部材とを前記粘着層を介して貼り合せるように作動させる、制御手段と
を含むことを特徴とする装置。 - 請求項12に記載の装置において、前記制御手段は、前記パネル部材と前記光学フィルムシートの先端とが前記貼付所定位置に達したときに、前記貼付所定位置において前記光学フィルムシートの先端と前記パネル部材の貼付開始位置とを一致させるようにしたことを特徴とする装置。
- 請求項12又は13のいずれかに記載の装置において、1つ先行する光学フィルムシートと1つ先行するパネル部材との貼り合せが完了した後に、前記貼合ローラを非作動状態に切換えると共に前記貼合ローラを開放し、それにより、前記貼合ローラ間に形成された空間を通して、前記フィルム先端検出装置を作動させ、前記貼付所定位置において前記光学フィルムシートの先端を読み取り、前記貼付所定位置において、前記キャリアフィルムから粘着層と共に剥がされて貼付所定位置に前進された前記光学フィルムシートの先端と前記パネル部材とが前記貼付所定位置に達したときに、前記貼合ローラを閉じると共に作動状態に切換え、それにより、前記剥離体の剥離作用により前記光学フィルムシートを前記粘着層と共に前記キャリアフィルムからさらに剥がしながら、前記光学フィルムシートと前記パネル部材とを前記粘着層を介して貼り合せるように作動することを特徴とする装置。
- 請求項14に記載の装置において、前記パネル部材と前記光学フィルムシートの先端とが前記貼付所定位置に達したときに、前記貼付所定位置において前記光学フィルムシートの先端と前記パネル部材の貼付開始位置とを一致させるようにしたことを特徴とする装置。
- 請求項12又は13のいずれかに記載の装置において、前記フィルム先端検出装置には移動装置が装備されており、1つ先行する光学フィルムシートと1つ先行するパネル部材との貼り合せが完了した後に、前記貼合ローラを非作動状態に切換えると共に前記貼合ローラを開放し、それにより、前記貼合ローラ間に形成された空間に、前記移動装置によって前記フィルム先端検出装置を臨ませ、作動させて前記貼付所定位置において前記光学フィルムシートの先端を読み取り、前記貼付所定位置において、前記キャリアフィルムから粘着層と共に剥がされて貼付所定位置に前進された前記光学フィルムシートの先端と前記パネル部材とが前記貼付所定位置に達したときに、前記移動装置によって前記フィルム先端検出装置を前記空間から退避させ、前記貼合ローラが閉じると共に作動状態に切換え、それにより、前記光学フィルムシートを前記粘着層と共に前記キャリアフィルムからさらに剥がしながら、前記光学フィルムシートと前記パネル部材とを前記粘着層を介して貼り合せるように作動することを特徴とする装置。
- 請求項16に記載の装置において、前記パネル部材と前記光学フィルムシートの先端とが前記貼付所定位置に達したときに、前記貼付所定位置において前記光学フィルムシートの先端と前記パネル部材の貼付開始位置とを一致させるようにしたことを特徴とする装置。
- 請求項12から17のいずれかに記載の装置において、前記フィルム先端検出装置によって読み取られた前記光学フィルムシートの先端の位置情報に基づき、前記キャリアフィルム送り装置を作動し、それにより前記キャリアフィルムを弛めることなく巻き取るか又は巻き戻すことによって前記光学フィルムシートを前進又は後退させ、前記光学フィルムシートの先端を前記貼付所定位置にさらに位置決めするようにしたことを特徴とする装置。
- 請求項12から18のいずれかに記載の装置において、前記キャリアフィルム送り装置は、少なくとも前記剥離体の前記頂部を挟んで前後にそれぞれが配置される正逆転フィードローラを含むことを特徴とする装置。
- 請求項19に記載の装置において、前記正逆転フィードローラの一方と前記剥離体ともう一方の前記正逆転フィードローラとから構成される前記キャリアフィルム送り装置における前記正逆転フィードローラの一方と前記剥離体との間にダンサーローラを配置し、もう一方の前記正逆転フィードローラと協働し、それにより、前記キャリアフィルムを弛めることなく巻き取るか又は巻き戻すようにしたことを特徴とする装置。
- 請求項12から20のいずれかに記載の装置において、前記フィルム先端検出装置は、送り方向に対して直交する前記光学フィルムシートの先端面が有する両端に対応する位置に近接ように配置された計測基準を備えた複数の撮像装置を含み、該撮像装置を作動させて前記光学フィルムシートの先端面が有する前記両端を読み取り、前記計測基準に基づいて前記両端の位置を特定するようにしたことを特徴とする装置。
- 請求項12から21のいずれかに記載の装置において、前記待機所定位置に前記パネル部材を検出するパネル部材検出装置が配置されており、前記制御手段は、前記パネル部材検出装置を作動させ、前記待機所定位置に搬入される前記パネル部材を検出するようにしたことを特徴とする装置。
- 請求項12から22のいずれかに記載の装置において、前記待機所定位置にパネル部材位置調整装置が配置されており、前記制御手段は、前記パネル部材位置調整装置を作動させ、前記パネル部材搬送装置によって前記貼付所定位置に向けて搬送される前記パネル部材の位置および姿勢を、前記待機所定位置において予め調整するようにしたことを特徴とする装置。
- 請求項12から23のいずれかに記載の装置において、前記制御手段は、前記パネル部材搬送装置と前記キャリアフィルム送り装置とを連動させ、前記貼付所定位置に向けて前進させる前記パネル部材と前記貼付所定位置に向けて前進させる前記光学フィルムシートとを同期させる手段をさらに含むことを特徴とする装置。
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