WO2018074235A1 - Manufacturing device and manufacturing method for optical display unit - Google Patents

Manufacturing device and manufacturing method for optical display unit Download PDF

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Publication number
WO2018074235A1
WO2018074235A1 PCT/JP2017/036136 JP2017036136W WO2018074235A1 WO 2018074235 A1 WO2018074235 A1 WO 2018074235A1 JP 2017036136 W JP2017036136 W JP 2017036136W WO 2018074235 A1 WO2018074235 A1 WO 2018074235A1
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WO
WIPO (PCT)
Prior art keywords
optical film
position
film sheet
adhesive layer
peeling
Prior art date
Application number
PCT/JP2017/036136
Other languages
French (fr)
Japanese (ja)
Inventor
智 小塩
前田 実
友和 由良
和生 北田
Original Assignee
日東電工株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP2016-204522 priority Critical
Priority to JP2016204522 priority
Priority to JP2016205082A priority patent/JP6379150B2/en
Priority to JP2016-205082 priority
Application filed by 日東電工株式会社 filed Critical 日東電工株式会社
Priority claimed from CN201780064094.0A external-priority patent/CN109844623A/en
Publication of WO2018074235A1 publication Critical patent/WO2018074235A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H41/00Machines for separating superposed webs
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • GPHYSICS
    • G02OPTICS
    • G02FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements

Abstract

The purpose of the present invention is to provide a manufacturing device and a manufacturing method for an optical display unit capable of meeting the need for high speed manufacturing and increasing unit size by providing highly accurate lamination. The present invention provides a manufacturing device and a manufacturing method for an optical display unit, said manufacturing device including a retention device that reciprocates between a peeling position and a prescribed position upstream of the peeling position. The retention device is configured to retain an optical film laminate including both ends of the optical film laminate along the width direction thereof at the prescribed upstream position, move the optical film laminate by a fixed distance, feed the tip of an optical film sheet, which is peeled off from a carrier film together with an adhesive layer at the peeling position, to a prescribed position downstream of the peeling position, and release the optical film laminate when the retention device reaches the prescribed downstream position.

Description

Manufacturing apparatus and manufacturing method of optical display unit

The present invention relates to a manufacturing apparatus and a manufacturing method for continuously manufacturing an optical display unit. More specifically, the present invention controls the variation in the bonding position of the optical film sheet bonded to the rectangular panel member and increases the bonding accuracy between the two, and the optical display unit manufacturing apparatus and It relates to a manufacturing method.

As shown in Patent Document 1 or Patent Document 4, in recent years, a manufacturing apparatus and a manufacturing method using a roll-to-panel (RTP) method have been adopted in the manufacturing site of an optical display unit.

In the RTP method, usually, an optical display unit is continuously manufactured as follows. First, a web-like optical film laminate is drawn out from a roll. The optical film laminate includes a web-like carrier film, an adhesive layer laminated on one surface of the carrier film, and a web-like optical film laminated on the carrier film via the adhesive layer. It is configured to include.

The optical film may be a single layer or a multilayer. In the web-shaped optical film laminate that has been fed out, a cut line in the width direction is continuously put, whereby a sheet-like optical film including an adhesive layer between adjacent cut lines, so-called optical A film sheet is formed.

The optical film sheet continuously supported on the web-like carrier film is peeled off from the carrier film together with the pressure-sensitive adhesive layer by a peeling means arranged in contact with the bonding position or near the bonding position. , Sent to the bonding position. The optical film sheet that has reached the bonding position is bonded to one surface of the panel member that is separately conveyed to the bonding position by the bonding means provided at the bonding position.

In the case of a liquid crystal display, a panel member in which an optical film sheet is laminated on one surface is bonded to another optical film sheet on the other surface. In the case of bonding to the other surface, a position where another optical film sheet peeled from another web-like carrier film together with the adhesive layer by another peeling means is bonded to the first optical film sheet and the panel member. Are sent to the same or different bonding positions and bonded to the other surface of the panel member.

Along with the spread of such RTP method, the bonding accuracy is, in reality, notwithstanding the increase in the speed of continuous production required for the optical display unit manufacturing apparatus or manufacturing method and the increase in the size of the optical display unit. Within 1mm from the request for narrowing the amount.

Originally, in the RTP method, it is not easy to accurately position a flexible optical film sheet including an adhesive layer peeled from a web-like carrier film with respect to a rectangular panel member conveyed to a bonding position. Absent. Nevertheless, the RTP system manufacturing apparatus or manufacturing method is now required to solve the trinity problem of high speed, large size, and high accuracy.

A specific technical problem is that the optical film sheet having a score line that crosses the longitudinal direction continuously bonded to the web-like carrier film of the web-like optical film laminate is sequentially peeled from the carrier film, When the optical display unit is continuously manufactured by sticking to the corresponding rectangular panel member, the lateral tension of the optical film laminate that occurs during transportation of the optical film laminate is reduced due to the slackness or strength of the sides. Deviation and fluttering of the optical film occur. And it is how to control the dispersion | variation which arises in the sticking precision of a panel member and an optical film sheet | seat due to the shift | offset | difference and the flutter of the horizontal direction of an optical film laminated body. More specifically, it is to realize an RTP manufacturing apparatus or manufacturing method capable of controlling such variations.

Conventionally, as shown in Patent Document 4 or Patent Document 5, when the optical film laminate is transported, the panel member is positioned at the position of the optical film sheet due to lateral displacement or fluttering of the optical film laminate. It was adjusted to match the posture. However, with the recent narrowing of the frame, it has become difficult to meet the demand for bonding the optical film sheet to the panel member with high accuracy in accordance with the increase in speed and size in the above-described adjustment.

More specifically, Patent Document 4 describes that the center line of the panel member is aligned and bonded to the center line of the optical film sheet to be sent, as shown in FIG. However, the present inventors consider that the given condition is the deviation of the optical film sheet caused by the lateral deviation or fluttering due to the slack of tension on both sides of the optical film laminate that occurs during the transportation of the optical film laminate. Rather, it was regarded as a new technical issue to achieve high-precision bonding to meet the demands for higher speeds and larger sizes, and these issues were actively challenged to resolve this issue.

For such a problem, first, a peeling means is used in which the optical film sheet together with the pressure-sensitive adhesive layer is reliably peeled from the carrier film of the optical film laminate to be transported without causing lateral displacement or fluttering. It is a condition. As the peeling means in the RTP system, a wedge-shaped or knife-shaped structure shown in FIG. 10 of Patent Document 1 or FIG. 5 of Patent Document 4 is usually used. Of course, in addition to the peeling means, a rotary drum having a suction fixing portion shown in the suction drum of FIG. 8 of Patent Document 2 and the laminate drum of FIG. 9 of Patent Document 3 can be used.

Japanese Patent No. 4377964 Japanese Patent No. 4346971 Korean Registered Patent No. 10-1540431 WO2011 / 155036 A1 Republic of Korea Published Patent No. 10-2015-11575

An object of the present invention is to provide a carrier film, a pressure-sensitive adhesive layer formed on one surface of the carrier film, and a plurality of optical film sheets continuously supported on the carrier film via the pressure-sensitive adhesive layer. In the peeling position, the optical film sheet is sequentially peeled from the carrier film together with the pressure-sensitive adhesive layer, and the optical film sheet is bonded to the panel member at the bonding position. In a manufacturing apparatus that continuously manufactures a typical display unit, there is a problem of how to realize high-precision bonding corresponding to high speed and large size.

The present invention relates to an RTP manufacturing apparatus and a manufacturing method that challenge these problems. More specifically, the present invention provides an optical display unit by sequentially peeling the optical film sheet together with the pressure-sensitive adhesive layer from the carrier film at the peeling position, and bonding the optical film sheet to the panel member at the bonding position. In a manufacturing apparatus that continuously manufactures, a holding device that reciprocates between a peeling position of the manufacturing apparatus and a predetermined position upstream of the peeling position is provided, and the holding device is an optical film at a predetermined position on the upstream side. While holding the width direction including both ends of the laminated body and moving the optical film laminated body by a certain distance while being held by the holding device, the optical film sheet peeled off together with the adhesive layer from the carrier film at the peeling position The problem is solved by feeding the tip to a predetermined position downstream of the peeling position and releasing the optical film laminate held there. It is obtained by allow.

In one aspect, the present invention provides an RTP manufacturing apparatus 10 that continuously manufactures an optical display unit. As shown in FIG. 1, the manufacturing apparatus 10 includes a carrier film 2 fed out from R <b> 1, an adhesive layer 4 formed on one surface of the carrier film 2, and an adhesive layer 4 on the carrier film 2. The optical film sheet 1 is conveyed together with the pressure-sensitive adhesive layer 4 from the carrier film 2 wound around R2 at the peeling position 100. 3 is a manufacturing apparatus 10 that continuously manufactures the optical display unit 6 by sequentially peeling 3 and bonding the peeled optical film sheet 3 to the panel member 5 at the bonding position 200.

The manufacturing apparatus 10 further includes a holding device 50 that reciprocates between the peeling position 100 and a predetermined position 300 on the upstream side of the peeling position 100. The holding device 50 is shown in each of FIGS. 2 to 4 in an enlarged view. It holds the width direction including both ends of the optical film laminate 1 at the upstream predetermined position 300 in FIG. 2 or FIG. 3, and moves by a certain distance while holding the optical film laminate 1 (FIG. 4). ). Next, the tip 31 of the optical film sheet 3 peeled together with the pressure-sensitive adhesive layer 4 from the carrier film 2 wound up by R2 at the peeling position 100 in FIG. Is reached, the optical film laminate 1 is released.

The holding device 50 includes a holding means 51. The holding means 51 can move in synchronization with the conveyance of the optical film laminate 1. The holding means 51 is, for example, a pair of gripping means 511 shown in FIG. 5 and both ends of the optical film laminate 1 as long as the holding means 51 is a means for sandwiching the both ends 11 from the left and right with respect to the feeding direction of the optical film laminate 1. A suction cup or suction means 512 that adsorbs one of 11 or a pair of cylindrical sandwiching rollers 513 that sandwich both end portions 11 of the optical film laminate 1 can be used.

The manufacturing apparatus 10 winds up the carrier film 2 of the optical film laminate 1 to be transported at the peeling position 100, thereby exposing the pressure-sensitive adhesive layer 4 and carrying the optical film sheet 3 together with the pressure-sensitive adhesive layer 4. A peeling means 110 for peeling from the film 2 is provided. The peeling means 110 provided at the peeling position 100 may use a cross-sectional wedge-shaped structure 60 having a top 61 shown in FIG.

While the optical film laminate 1 is being transported, the peeling means 110 bends and winds the back surface 20 of the carrier film 2 at the top portion 61 at the peeling position 100, whereby the optical film sheet 3 together with the pressure-sensitive adhesive layer 4 is wound on the carrier. It has a peeling action of peeling from the film 2 and sending the tip 31 of the optical film sheet 3 to a predetermined position 400 on the downstream side.

When this peeling means 110 is used, it is desirable that the downstream side predetermined position 400 is on the downstream side of the bonding position 200. When the downstream side predetermined position 400 is on the downstream side of the bonding position 200, the tip 31 of the peeled optical film sheet 3 is first bonded and fixed to the panel member 5 at the bonding position 200. Next, after the leading end 31 of the optical film sheet 3 reaches a predetermined downstream position 400 that is further downstream, the holding means 51 releases the holding of the both end portions 11 of the optical film laminate 1. 3 can more reliably suppress lateral displacement and flutter.

The manufacturing apparatus 10 can also be provided with a peeling means 110 different from the peeling structure of FIG. It is shown in FIG. The peeling means 110 is a rotating drum 70 having an adsorbing and fixing portion 71, and the rotating drum 70 operates in cooperation with the bonding means 210 as will be described in detail later.

The peeling means 110 sucks and fixes the back surface 30 of the tip 31 of the optical film sheet 3 to the suction fixing portion 71 of the rotary drum 70 at the peeling position 100 while conveying the optical film laminate 1, and then rotates the rotary drum The carrier film 2 is wound up while starting 70, thereby peeling the optical film sheet 3 together with the pressure-sensitive adhesive layer 4 from the carrier film 2, and having a peeling action of sucking and transporting the peeled optical film sheet 3.

Next, when the leading end 31 of the optical film sheet 3 adsorbed and fixed to the rotary drum 70 is adsorbed and conveyed to a predetermined downstream position 400 upstream of the bonding position 200, the holding means 51 is then moved to the optical film laminate. The holding of both end portions 11 of 1 is released. Since the optical film sheet 3 is adsorbed and conveyed by the rotary drum 70 to the bonding position 200 while being adsorbed and fixed, lateral displacement and fluttering of the optical film sheet 3 are more reliably suppressed.

As shown in FIG. 1, the optical film laminate 1 of the manufacturing apparatus 10 includes an optical film sheet 3 including at least a pressure-sensitive adhesive layer 4 formed in a rectangular shape and arranged on a carrier film 2, or Using the slitting device shown in R3 of the manufacturing apparatus 10, by using the slits 12 in the width direction placed at regular intervals in the longitudinal direction on the optical film 3 ′ laminated on the carrier film 2 via the adhesive layer 4 ′. It is preferable to use one obtained by molding the optical film sheet 3 including the pressure-sensitive adhesive layer 4.

The holding position 501 of the holding device 50 with respect to the optical film laminate 1 is preferably a position near the rear end 32 of the optical film sheet 3 as shown in FIG.

The holding device 50 is interlocked with the conveyance of the optical film laminate 1 to correct the slack of the tension on both sides of the optical film laminate 1 or the strength due to the slack of the tension, and is peeled from the carrier film 2 to the downstream predetermined position 400. It is possible to suppress lateral displacement and fluttering of the optical film sheet 3 including the adhesive layer 4 to be sent.

In another aspect, the present invention provides an RTP manufacturing method for continuously manufacturing the optical display unit 6.

As shown in FIG. 1, in the manufacturing apparatus 10 of the optical display unit 6, this manufacturing method includes a carrier film 2 fed out from R1, an adhesive layer 4 formed on one surface of the carrier film 2, and the A web-like optical film laminate 1 including a plurality of optical film sheets 3 continuously supported on the carrier film 2 is conveyed via the pressure-sensitive adhesive layer 4, and is adhered from the carrier film 2 at the peeling position 100. The optical film sheet 3 is sequentially peeled together with the agent layer 4. The manufacturing method further continuously manufactures the optical display unit 6 by bonding the peeled optical film sheet 3 to the panel member 5 at the bonding position 200.

The manufacturing apparatus 10 used in the manufacturing method includes a holding device 50 that reciprocates between the peeling position 100 and a predetermined position 300 on the upstream side of the peeling position 100.

In this manufacturing method, when the optical film laminate 1 is conveyed and the rear end 32 of the optical film sheet 3 reaches the predetermined position 300 upstream of the peeling position 100,
A holding step A in which the holding device 50 at the initial position 500 holds both ends 11 in the width direction of the optical film laminate 1 being conveyed,
A forward movement step B in which the holding device 50 moves the optical film laminate 1 by a certain distance L in a state where the both ends 11 of the optical film laminate 1 are held;
In the peeling position 100, the peeling means 110 peels the optical film sheet 3 together with the pressure-sensitive adhesive layer 4 from the carrier film 2 of the optical film laminate 1,
When the leading end 31 of the optical film sheet 3 reaches a predetermined position 400 on the downstream side of the peeling position 100, a release step D in which the holding device 50 releases the optical film laminate 1, and a return path in which the holding device 50 returns to the initial position 300. Moving process E;
In the bonding position 200, the bonding means 210 includes a bonding process F in which the optical film sheet 3 peeled to the panel member 5 is bonded by the adhesive layer 4.

In the holding step A of the present manufacturing method, the holding position 501 where the holding means 51 of the holding device 50 holds the optical film laminate 1 is preferably set in the vicinity of the rear end 32 of the optical film sheet 3.

The forward movement process B of the present manufacturing method is preferably synchronized with the conveyance of the optical film laminate 1, and more preferably synchronized with a laminating operation including winding of the carrier film.

In the forward movement process B of this manufacturing method, the slack of the tension on both sides of the optical film laminate 1 or the strength due to the slack of the tension is corrected in conjunction with the conveyance of the optical film laminate 1 and sent to the predetermined position 400 on the downstream side. The optical film sheet 3 including the pressure-sensitive adhesive layer 4 can be prevented from shifting or fluttering in the horizontal direction.

As the peeling means 110 provided at the peeling position 100 of the manufacturing apparatus 10 used in the present manufacturing method, either the cross-sectional wedge-shaped structure 60 having the top portion 61 or the rotating drum 70 having the suction fixing portion 71 can be used.

In the peeling step C of this manufacturing method, when the cross-sectional wedge-shaped structure 60 having the top 61 is provided as the peeling means 110 at the peeling position 100, the back surface 20 of the carrier film 2 is moved while the optical film laminate 1 is conveyed. The carrier film 2 can be wound by being bent at the top 61 of the wedge-shaped structure 60 in cross section.

In addition, when using the cross-sectional wedge-shaped structure 60 as the peeling means 110, it is desirable that the downstream predetermined position 400 is on the downstream side of the bonding position 200. This is because when the downstream predetermined position 400 is located downstream of the bonding position 200, the tip of the optical film sheet 3 is fixed to the panel member 5 at the bonding position 200, and further downstream to the downstream predetermined position 400. The holding of the optical film laminate 1 is released after the front end of the optical film sheet 3 reaches. This is because it is possible to more reliably suppress lateral displacement and fluttering of the optical film sheet 3.

On the other hand, in the peeling step C of the present manufacturing method, when the rotary drum 70 having the suction fixing portion 71 is provided as the peeling means 110 at the peeling position 100, the optical film laminate 1 is conveyed while being peeled at the peeling position 100. The back surface 30 of the tip 31 of the optical film sheet 3 is sucked and fixed to the suction fixing portion 71 of the rotating drum 70, and the carrier film 2 is wound up while starting the rotating drum 70. Thereby, the optical film sheet 3 together with the pressure-sensitive adhesive layer 4 is peeled off from the carrier film 2 and sucked and conveyed toward the bonding position 200 by the rotating drum 70.

When the leading end 31 of the optical film sheet 3 sucked and fixed to the rotating drum 70 is sucked and conveyed to a predetermined downstream position 400 upstream of the bonding position 200, the holding means 51 is connected to both ends of the optical film laminate 1. The holding of the part 11 is released. On the other hand, since the optical film sheet 3 is adsorbed and conveyed by the rotary drum 70 to the bonding position 200 while being adsorbed and fixed, lateral displacement and fluttering of the optical film sheet 3 can be more reliably suppressed. become.

As shown in FIG. 1, the optical film laminate 1 used in the present manufacturing method is one in which an optical film sheet 3 including an adhesive layer 4 formed in at least a rectangular shape is arranged side by side on a carrier film 2, Alternatively, using the cutting device R3 shown in the manufacturing apparatus 10 of the present manufacturing method, the optical film 3 ′ laminated on the carrier film 2 through the adhesive layer 4 ′ is cut in the width direction at regular intervals in the longitudinal direction. Any of those in which the optical film sheet 3 including the pressure-sensitive adhesive layer 4 is formed by the step of inserting may be used.

It is a schematic diagram showing the manufacturing apparatus of this invention. It is an expansion schematic diagram of the holding | maintenance apparatus which reciprocates provided with the cross-sectional wedge type structure which has a top part in the peeling position of the manufacturing apparatus of this invention. It is an expansion schematic diagram of the holding | maintenance apparatus which reciprocates provided with the rotating drum which has an adsorption fixing part in the peeling position of the manufacturing apparatus of this invention. It is a schematic diagram showing operation | movement of the holding | maintenance apparatus which reciprocates of this invention. It is a schematic diagram of the holding means which comprises the holding | maintenance apparatus of this invention. FIG. 4 is a plan view, a side view, and a bottom view of each of the holding devices that reciprocate in the vicinity of the rear end 32 of the optical film sheet 3 with respect to the holding position for the optical film laminate of the present invention. FIG. 4 is a plan view, a side view, and a bottom view of each of the reciprocating holding devices whose holding positions with respect to the optical film laminate of the present invention are positions near the tip 31 of the optical film sheet 3 following the optical film sheet 3. It is one aspect | mode of the holding means of this invention. 1 represents a first operational flow in a manufacturing apparatus of the present invention having a reciprocating holding device with a cross-sectional wedge-shaped structure having a top. The second operation | movement flow in the manufacturing apparatus of this invention which has the holding | maintenance apparatus which reciprocates provided with the cross-sectional wedge-shaped structure which has a top part is represented. Steps (a) to (f) of the manufacturing method by the manufacturing apparatus of the present invention having a reciprocating holding device having a cross-sectional wedge-shaped structure having a top portion are shown. FIG. 3 shows a first operation flow in the manufacturing apparatus of the present invention having a holding device that reciprocates and includes a rotating drum having a suction fixing portion. The 2nd operation | movement flow in the manufacturing apparatus of this invention which has the holding | maintenance apparatus which reciprocates provided with the rotating drum which has an adsorption | suction fixation part is represented. Steps (a) to (f) of the manufacturing method by the manufacturing apparatus of the present invention having a holding device that reciprocates with a rotating drum having an adsorption fixing part are shown. It is explanatory drawing of the measuring method of the bonding precision of an Example and a comparative example. It is actual measurement data of an Example and a comparative example.

Hereinafter, a manufacturing apparatus and a manufacturing method for continuously manufacturing an optical display unit according to the present invention will be described with reference to the drawings. FIG. 1 shows an adhesive layer 4 from a carrier film 2 constituting a web-shaped optical film laminate 1 drawn out from R1 by driving means 82 and 83 by a peeling means 110 at a peeling position 100 of an RTP manufacturing apparatus 10. And the optical film sheet 3 is peeled one by one, and in the bonding position 200, the bonding means 210 bonds the optical film sheet 3 to the panel member 5 through the adhesive layer 4, and thereby the optical display unit 6 is continuously provided. It is a schematic diagram showing the manufacturing apparatus or manufacturing method which manufactures automatically. However, the apparatus shown here uses a cross-sectional wedge-shaped structure 60 having a top 61 as the peeling means 110.

FIG. 2 shows an embodiment in which a cross-sectional wedge-shaped structure 60 having a top 61 as the peeling means 110 is provided at the peeling position 100 of the manufacturing apparatus 10 shown in FIG. When the manufacturing apparatus 10 is used, the carrier film 2 is bent at the top 61 of the cross-sectional wedge-shaped structure 60 by bending the back surface 20 of the carrier film 2 at the peeling position 100 by the winding drive of R2 by the driving means 83 (FIG. 1). The optical film sheet 3 is peeled off together with the pressure-sensitive adhesive layer 4 from the carrier film 2. The peeled optical film sheet 3 is sent to the bonding position 200 and bonded to the panel member 5 via the pressure-sensitive adhesive layer 4 by the bonding means 210.

As will be described in detail later, the operation flow of the manufacturing apparatus 10 for bonding the optical film sheet 3 to the panel member 5 at the bonding position 200 using the wedge-shaped structure 60 having the top 61 as the peeling means 110 is illustrated in FIG. 8 and FIG.

FIG. 3 shows another embodiment in which a rotating drum 70 having a suction fixing portion 71 is provided as the peeling means 110 at the peeling position 100 of the manufacturing apparatus 10 shown in FIG. When this manufacturing apparatus 10 is used, at the peeling position 100, the suction fixing portion 71 of the rotary drum 70 suctions and fixes the back surface 30 of the tip 31 of the optical film sheet 3, and the driving means 83 drives the winding of the R2 carrier film 2 The rotary drum 70 is operated so as to interlock with (FIG. 1), whereby the optical film sheet 3 is peeled from the carrier film 2 together with the pressure-sensitive adhesive layer 4, and the peeled optical film sheet 3 is sent to the bonding position 200. . At the bonding position 200, the rotary drum 70 cooperates with the bonding means 210, and the optical film sheet 3 is bonded to the panel member 5 through the adhesive layer 4.

The operation flow of the manufacturing apparatus 10 that uses the rotating drum 70 having the suction fixing unit 71 as the peeling unit 110 and bonds the optical film sheet 3 to the panel member 5 at the bonding position 200 will be described in detail later. 11 and FIG.

The manufacturing apparatus 10 shown in FIG. 2 or FIG. 3 further has an upstream predetermined position 300 defined immediately before the peeling position 100 or between the guide roller 80 and the upstream guide roller 81 located at the peeling position 100. A holding device 50 that reciprocates between the side predetermined position 300 and the guide roller 80 is provided.

The distance L by which the holding device 50 provided in the manufacturing apparatus 10 reciprocates is equal to the distance L 0 in the feeding direction of the optical film sheet 3 or shorter than the length L 0 in the feeding direction of the optical film sheet 3. It is preferable that This is because, in the bonding position 200 of the manufacturing apparatus 10, the distance that the optical film laminate 1 is conveyed in one bonding operation is usually equal to the length L 0 in the feeding direction of the optical film sheet 3. This is because there is no more. Therefore, the distance L that the holding device 50 moves while holding the both end portions 11 of the optical film laminate 1 is the length L 0 in the feeding direction of the optical film sheet 3 or smaller than the length L 0 .

FIG. 8 is a first operation flow in the manufacturing apparatus 10 having the reciprocating holding device 50 provided with the cross-sectional wedge-shaped structure 60 having the top portion 61. It is also a step of the first operation flow by the manufacturing apparatus 10 in which the moving distance L of the holding device 50 becomes the length L 0 in the feeding direction of the optical film sheet 3. Hereinafter, Step 1 to Step 6 will be described in more detail.

Step 1 includes a step of detecting the front end 31 (or rear end 32) of the optical film sheet 3 with the sensor 90 (FIG. 1) and simultaneously detecting the position of the panel member 5 with another sensor 91 (FIG. 1). Step 1 further transports the panel member 5 to the bonding position 200 so as to match the position of the optical film sheet 3, adjusts the position of the optical film sheet 3 and the position of the panel member 5, and the bonding means 210 performs optical processing. In this stage, the leading end 31 of the film sheet 3 and the leading end 55 of the panel member 5 are gripped.

Step 2 is a stage in which the both end portions 11 of the optical film laminate 1 are held and fixed by the holding means 51 of the holding device 50 at the upstream predetermined position 300. As shown in FIG. 4 representing the operation of the reciprocating holding device, the holding position 501 of the optical film laminate 1 by the holding means 51 is adjacent to the rear end 32 of the optical film sheet 3 to be pasted or adjacent thereto. It is preferably one of the front ends 31 of the subsequent optical film sheet 3.

Incidentally, the timing at which the holding means 51 holds and fixes the optical film laminate 1 is preferably immediately after the bonding means 210 presses and fixes the tip 31 of the optical film sheet 3 to the tip of the panel member 5. This is because, when performed at such timing, the optical film sheet 3 on which the tip 31 is held and fixed is stretched upstream, so that the optical film sheet 3 is more reliably displaced in the lateral direction or fluttered. This is because it is suppressed.

What should be considered here is that the length of the optical film sheet 3 is short and the distance that the holding means 51 can move is not sufficient, or the holding means 51 is designed to be bonded to the film sheet 3 to be bonded. The position at which the holding position 501 (upstream predetermined position 300) of the optical film laminate 1 is determined when the rear end 32 cannot be held.
The upstream predetermined position 300 can be further determined on the upstream side to such an extent that the holding means 51 can move. However, the effect which suppresses the shift | offset | difference and the flutter of the horizontal direction of the optical film sheet 3 which precedes bonding becomes upstream, so that the upstream predetermined position 300 leaves | separates from the optical film sheet 3 which precedes bonding. Therefore, it is preferable to set the holding position 501 on the upstream side to the extent that the holding means 51 can move, and set the holding position 501 closer to the preceding optical film sheet 3 to be bonded.

Step 3 is a stage of starting an operation of bonding the peeled optical film sheet 3 to the panel member 5 via the adhesive layer 4 by the bonding means 210 at the bonding position 200. Step3 further moves while the carrier film 2 and the steps to be taken up by a distance corresponding to the length L 0 of the optical film sheet 3, at the same time, the holding means 51 holds the opposite ends 11 of the optical film laminate 1 A stage of performing.

Step 4 is a stage of releasing the state in which the holding means 51 holds the both end portions 11 of the optical film laminate 1. At this stage, the optical film laminate 1 held by the holding means 51 is released. This stage is during the bonding operation between the optical film sheet 3 and the panel member 5 or immediately before the completion of the bonding operation.

Step 5 is a stage where the bonding means 210 stops its operation and the bonding operation with the optical film sheet panel member 5 is completed. Step 5 further includes a step of stopping the winding of R2 by the driving means 83.

Step 6 is a preparatory stage in which the holding means 51 that has released the optical film laminate 1 is returned to a predetermined position on the upstream side, and the holding device 50 holds and fixes the adjacent optical film laminate 1 adjacent thereto.

FIG. 9 is a second operation flow in the manufacturing apparatus 10 having the reciprocating holding device 50 provided with the cross-sectional wedge-shaped structure 60 having the top portion 61. It is also Step 1 to Step 6 of the second operation flow by the manufacturing apparatus 10 in which the moving distance L of the holding device 50 is equal to or less than the length L 0 in the feeding direction of the optical film sheet 3. Hereinafter, Step 1 to Step 6 of the second operation flow will be described focusing on differences from the first operation flow shown in FIG.

Step 1 detects the front end 31 (or rear end 32) of the optical film sheet 3 with a sensor (FIG. 1), and simultaneously detects the position of the panel member 5 with another sensor 91 (FIG. 1). The panel member 5 is conveyed to the bonding position 200 so as to match the position of the optical film sheet 3, and the position of the optical film sheet 3 and the position of the panel member 5 are adjusted. Therefore, the bonding means 210 does not grip the optical film sheet 3 and the panel member 5 at the bonding position 200 as in the first operation flow of FIG.

Step 2 is a stage corresponding to Step 3 of the first operation flow in FIG. Although it is a stage which starts the operation | movement which bonds the optical film sheet 3 peeled from the carrier film 2 to the panel member 5 via the adhesive layer 4 in the bonding position 200, FIG. Is a step prior to the step 2 of the first operation flow. Specifically, the operation of the bonding unit 210 is started prior to the stage in which the holding unit 51 holds and fixes the optical film laminate 1. Step 2 further includes the step of winding the carrier film 2 by a distance corresponding to the length L 0 of the optical film sheet 3.

In Step 3, the holding means 51 is the optical film laminate 1 at the initial position 300 ′ where the holding means 51 of the holding device 50 is started in the middle of the bonding operation between the optical film sheet 3 and the panel member 5 started in Step 2. This is a stage of holding and fixing the both end portions 11 of. The initial position 300 ′ is a position corresponding to the upstream predetermined position 300. Step 3 further includes a stage in which the holding means 51 moves by a predetermined distance L in conjunction with the bonding operation between the optical film sheet 3 and the panel member 5.

The timing at which the holding means 51 holds and fixes the optical film laminate 1 is already in a state where the tip 31 of the optical film sheet 3 and the tip 55 of the panel member 5 are gripped by the bonding means 210. At Step 3 in this state, both end portions 11 of the optical film laminate 1 on the upstream side of the optical film sheet 3 are held and fixed by the holding means 51. Since the optical film laminate 1 following the optical film sheet 3 whose tip 31 is held by the bonding means 210 is held and fixed by the holding means 51, the optical film sheet 3 is stretched upstream, whereby the optical film sheet The lateral displacement and flutter of 3 are more reliably suppressed.

By the way, as FIG. 4 showing operation | movement of the holding | maintenance apparatus reciprocatingly shows, the holding | maintenance position 501 of the optical film laminated body 1 by the holding means 51 is the rear end 32 or adjacent of the optical film sheet 3 to precede. It is preferable that it is the front end 31 of the optical film sheet 3 to perform.

What should be considered here is that the length of the optical film sheet 3 is short and the distance that the holding means 51 can move is not sufficient, or the holding means 51 is designed to be bonded to the film sheet 3 to be bonded. The position at which the holding position 501 (upstream predetermined position 300) of the optical film laminate 1 is determined when the rear end 32 cannot be held. The upstream predetermined position can be further determined on the upstream side to such an extent that the holding unit 51 can move. However, the effect which suppresses the shift | offset | difference and the flutter of the horizontal direction of the preceding optical film sheet | seat as a target of bonding falls, so that an upstream predetermined position leaves | separates from the optical film sheet | seat of a preceding bonding target. Therefore, it is preferable to set the holding position 501 on the upstream side so that the holding unit 51 can move the distance, and set the holding position 501 closer to the preceding optical film sheet to be bonded.

Step 4 corresponds to Step 4 of the first operation flow in FIG. That is, the optical film laminate 1 is released after the optical film laminate 1 is moved by a predetermined distance L while being held by the holding means 51.

Step 5 is a stage where the bonding means 210 stops its operation and the bonding operation with the optical film sheet panel member 5 is completed. Step 5 further includes a step of stopping the winding of R2 by the driving means 83.

Step 6 is a step in which the holding means 51 that has released the optical film laminate 1 is returned to the initial position (upstream predetermined position 300). Step 6 further includes a preparation stage in which the holding device 50 holds and fixes the adjacent optical film laminate 1 adjacent thereto.

FIG. 11 is a first operation flow in the manufacturing apparatus 10 having the reciprocating holding device 50 including the rotary drum 70 having the suction fixing portion 71. It is also a step of the first operation flow by the manufacturing apparatus 10 in which the moving distance L of the holding device 50 becomes the length L 0 in the feeding direction of the optical film sheet 3. Hereinafter, Step 1 to Step 9 will be described in more detail.

Step 1 is a stage in which the front end 31 (or the rear end 32) of the optical film sheet 3 is detected by a sensor (not shown). However, unlike the case where the wedge-shaped cross-section structure 60 is used as the peeling means 110, at this stage, the position of the suction fixing portion 71 of the rotating drum 70 and the position of the tip 31 of the optical film sheet 3 are located at the tip position of the peeling position 100. Is a feature of the manufacturing apparatus 10.

Step 2 is a stage in which the back surface 30 of the tip 31 of the optical film sheet 3 is suction fixed to the suction fixing portion 71 of the rotary drum 70. At the same time or without delay, Step 3 holds and fixes both end portions 11 of the optical film laminate 1 including the optical film sheet adjacent to the preceding optical film sheet 3 to be bonded at a predetermined position on the upstream side by holding means. It is the stage to do.

Step 4 is a stage at which the rotary drum 70 starts sucking and conveying the optical film sheet 3. If it demonstrates in detail, the back surface 30 of the front-end | tip 31 of the optical film sheet 3 will already be adsorbed and fixed to the adsorption fixing part 71 of the rotating drum 70 in Step2. Step 4 is interlocked with the winding operation of R2 by the driving means 83 at the peeling position 100, and the carrier film 2 of the optical film laminate 1 is wound, while the rotary drum 70 is started from the position of the guide roller 80, Thereby, the optical film sheet 3 is peeled off from the carrier film 2 together with the adhesive layer 4 adsorbed and fixed to the adsorption fixing portion 71, and the optical film sheet 3 together with the exposed adhesive layer 4 is moved to a predetermined position on the downstream side by the rotary drum 70. In this stage, it is sucked and conveyed toward 400. The step of winding the carrier film 2 by the length L 0 of the optical film sheet 3 and simultaneously the step of moving the carrier film 2 by the distance L while holding both ends 11 of the optical film laminate 1 are included. .

Step 5 and Step 6 are preferably simultaneous. Step 5 is a stage in which the holding means 51 releases the holding state of the optical film laminate 1 when the downstream predetermined position 400 is reached, thereby releasing the optical film laminate 1. At the same time, Step 6 is a stage in which the suction conveyance of the optical film sheet 3 by the rotating drum 70 is stopped. Step 6 further includes a step of stopping the winding of the carrier film 2 onto R2 by the driving means 83.

Step 7 is a stage in which the holding means 51 that has released the optical film laminate 1 is returned to the predetermined position 300 on the upstream side. Step 7 further includes a preparatory stage in which the holding device 50 holds both ends 11 of the optical film laminate 1 adjacent to the preceding carrier film 3.

In Step 8, the position of the panel member 5 is detected by a sensor (not shown), while the rotary drum 70 is reactivated, the optical film sheet 3 is resumed by suction conveyance, and at the bonding position 200, the optical film sheet 3 This is a stage of adjusting the positions of the tip 31 and the tip 55 of the panel member 5.

Step 9 is a stage in which the optical film sheet 3 sucked and conveyed to the rotary drum 70 is bonded to the panel member 5 by the one bonding roller 201 of the bonding means 210 cooperating with the rotating drum 70 at the bonding position 200. is there.

FIG. 12 is a second operation flow in the manufacturing apparatus 10 having the reciprocating holding device 50 including the rotary drum 70 having the suction fixing portion 71. It is also a second operation flow by the manufacturing apparatus 10 in which the moving distance L of the holding device 50 is equal to or less than the length L 0 in the feeding direction of the optical film sheet 3. Hereinafter, Step 1 to Step 9 of the first operation flow will be described with a focus on differences from the first operation flow shown in FIG.

Step 1 and Step 2 are the same stage as in the case of the first operation flow.
Step 1 is a stage in which the front end 31 (or the rear end 32) of the optical film sheet 3 is detected by a sensor (not shown). At this stage, the position of the suction fixing portion 71 of the rotary drum 70 and the position of the front end 31 of the optical film sheet 3 reach the front end position of the peeling position 100 as in the case of the first operation flow. Step 2 is a stage in which the back surface 30 of the tip 31 of the optical film sheet 3 is suction fixed to the suction fixing portion 71 of the rotary drum 70.

Step 3 is a stage in which suction conveyance of the optical film sheet 3 is started by the rotary drum 70. More specifically, at this stage, the back surface 30 of the tip 31 of the optical film sheet 3 is already suction-fixed to the suction fixing portion 71 of the rotary drum 70 at Step 2.

Step 3 is interlocked with the winding operation of R2 by the driving means 83 at the peeling position 100, and the carrier film 2 of the optical film laminate 1 is wound, while the rotating drum 70 is started to rotate from the position of the guide roller 80. Thereby, the optical film sheet 3 is peeled from the carrier film 2 together with the adhesive layer 4 adsorbed and fixed to the adsorbing and fixing part 71, and the optical film sheet 3 together with the exposed adhesive layer 4 is predetermined on the downstream side by the rotary drum 70. This is a stage where it is conveyed to the position 400 by suction. Step 3 further includes a step of winding the carrier film 2 by the length L 0 of the optical film sheet 3.

In Step 4, the holding means 51 holds and fixes both end portions 11 of the optical film laminate 1 that is transporting the optical film sheet 3 including the adhesive layer 4 from which the rotary drum 70 is peeled off from the carrier film 2. It is the stage to do. At the same time, Step 4 includes a stage in which the holding means 51 moves by a distance L while holding the both end portions 11 of the optical film laminate 1.

Step 5 and Step 6 are preferably simultaneous, as in the first operation flow. Step 5 is a stage in which the holding means 51 releases the holding state of the optical film laminate 1 and releases the optical film laminate 1 when the downstream predetermined position 400 is reached. At the same time, Step 6 is a stage in which the suction conveyance of the optical film sheet 3 by the rotating drum 70 is stopped. Step 6 further includes a step of stopping winding of the carrier film 2 of R2 by the driving means 83.

Step 7 corresponds to Step 7 of the first operation flow in FIG. That is the stage in which the holding means 51 that has released the optical film laminate 1 is returned to the initial position 300 ′ (fixed position in Step 4). The initial position 300 'is a position corresponding to the upstream predetermined position 300 in FIG. Step 7 further includes a preparation stage in which the holding device 50 holds and fixes the adjacent optical film laminate 1 adjacent thereto.

Step 8 and Step 9 correspond to Step 8 and Step 9 of the first operation flow. In Step 8, the position of the panel member 5 is detected by a sensor (not shown), while the rotary drum 70 is restarted, and the suction conveyance of the optical film sheet 3 is resumed. This is a stage of adjusting the positions of the tip 31 and the tip 55 of the panel member 5. Step 9 is an optical film that is adsorbed and transported to the rotary drum 70 on the panel member 5 by the bonding means 210 ′ configured by the rotating drum 70 and the bonding roller 201 cooperating with the rotating drum 70 at the bonding position 200. In this stage, the sheet 3 is pasted.

The manufacturing method using the manufacturing apparatus 10 of the optical display unit 6 is typically shown in (a) to (f) representing the manufacturing process of FIGS. This is a manufacturing method using the manufacturing apparatus 10 in which the cross-sectional wedge-shaped structure 60 having the top portion 61 is provided as the peeling means 110 provided at the peeling position 100. Contrast this with the rotating drum 70 having the suction fixing portion 71 as the peeling means 110 provided at the peeling position 100 shown in (a) to (f) showing the manufacturing process of FIGS. 3 and 13. This is a manufacturing method using the deployed manufacturing apparatus 10.

In the manufacturing process (a) of the manufacturing method shown in FIG. 2 using the manufacturing apparatus 10 provided with the cross-sectional wedge-shaped structure 60 having the top 61 as the peeling means 110, the optical film laminate 1 is conveyed, and the optical film The sheet 3 and the panel member 5 are ready for bonding.

(B) of the manufacturing process is a process in which the bonding means 210 is operated to sandwich the tip 55 of the panel member 5 and the tip 31 of the optical film sheet 3 as shown in FIG.

(C) of the manufacturing process is a process in which the holding device 50 starts operating immediately after that and holds the width direction including both end portions 11 of the optical film laminate 1 at the upstream predetermined position 300.

(D) of the subsequent manufacturing process is a process in which the holding device 50 moves a certain distance L while holding the optical film laminate 1 in conjunction with the bonding operation of the panel member 5 and the optical film sheet 3. is there.

The holding device 50 may be either FIG. 6A or FIG. 6B. An example of the holding means 51 is shown in FIG. Incidentally, the top view of FIG. 6A or 6B shows a state in which both end portions 11 of the optical film laminate 1 are held by the holding portion 514 provided on the holding arm 510 and the holding portion 515 attached to the cylinder 516 shown in FIG. Is shown.

The holding device 50 further includes support columns 801 and 801 constituting L-shaped or T-shaped frame bodies that support the guide roller 80 wider than the width of the optical film laminate 1 and the upstream guide roller 81 from both sides, and the support columns 801 and 801. Left and right guide rails 802, 802 and holding means 51, 51 for holding the both end portions 11, 11 of the optical film laminate 1 on the guide rails 802, 802.

6A, the holding position 501 of the optical film laminate 1 held by the holding means 51 is a position in the vicinity of the rear end 32 of the optical film sheet 3 bonded to the panel member 5. In the holding device 50 shown in FIG. 6B, the holding position 501 of the optical film laminate 1 held by the holding means 51 is in the vicinity of the tip 31 of the optical film sheet 3 following the optical film sheet 3 bonded to the panel member 5. Position.

The holding device 50 preferably moves forward in synchronization with the conveyance of the optical film laminate 1 or moves in synchronization with the winding operation of the carrier film 2. The distance L by which the optical film laminate 1 is moved while being held by the holding device 50 is equal to the length L 0 in the feeding direction of the optical film sheet 3 depending on the size of the panel member 5 and the equipment design. and if the the length L 0 shorter than the length of the feeding direction is assumed.

The bonding operation of the manufacturing step (d) is performed by peeling the optical film sheet 3 together with the pressure-sensitive adhesive layer 4 from the carrier film 2 at the peeling position 100, while the optical film sheet 3 peels the pressure-sensitive adhesive layer 4 at the bonding position 200. To the panel member 5. This is characterized in that the bonding operation is continuous with the peeling operation.

(E) of the manufacturing process is a process of releasing the state in which the holding means 51 holds the both end portions 11 of the optical film laminate 1. In this step, the optical film laminate 1 held by the holding means 51 is released. This process is during the bonding operation between the optical film sheet 3 and the panel member 5 or immediately before the completion of the bonding operation.

(F) of the manufacturing process is a process in which the bonding means 210 stops operating and the bonding operation with the optical film sheet panel member 5 is completed. This step further includes the step of stopping the winding of R2 by the driving means 83, the holding means 51 that has released the optical film laminate 1 is returned to the predetermined upstream position 300, and the holding means 51 follows the optical film 3. A step of preparing to hold and fix the laminate 1 is included.

As another manufacturing method using the manufacturing apparatus 10 provided with the cross-sectional wedge-shaped structure 60 having the top portion 61 as the peeling means 110, (c) and (d) of the manufacturing process of the manufacturing method described above are shown in FIG. This is a substitute for (c ′) and (d ′) of the manufacturing process that has not been performed.

Specifically, in the manufacturing process (c ′), the bonding operation of the panel member 5 and the optical film sheet 3 is started. In the subsequent manufacturing process (d ′), the holding device 50 holds and fixes both end portions 11 of the optical film laminate 1 being conveyed. The holding device 50 further moves a certain distance L while holding the optical film laminate 1. The difference between the two is that the former starts the bonding operation between the panel member 5 and the optical film sheet 3 after the optical film laminate 1 is held and fixed by the holding device 50, while the latter is conveyed after the bonding operation is started. It exists in the point which hold | maintains and fixes the optical film laminated body 1 inside.

In any manufacturing method, the bonding means 210 is composed of a pair of bonding rollers 201 and 202 as shown in FIG. 2, and the optical film sheet 3 attaches the adhesive layer 4 at the bonding position 200. And the optical display unit 6 is continuously manufactured.

In the manufacturing process (a) of this manufacturing method shown in FIG. 3 using the manufacturing apparatus 10 provided with the rotating drum 70 having the suction fixing portion 71 as the peeling means 110, the optical film laminate 1 is transported. 13, the optical film sheet 3 is ready to be fixed to the suction fixing portion 71 of the rotary drum 70 on the back surface 30 of the front end 31 thereof. Therefore, (b) of the manufacturing process is a process in which the back surface 30 of the tip 31 of the optical film sheet 3 held by the guide roller 80 and the suction fixing portion 71 of the rotary drum 70 is suction fixed.

(C) of the manufacturing process is a process in which the holding means 51 holds and fixes both end portions 11 of the optical film laminate 1 following the optical film sheet 3 as shown in FIG. (D) of the manufacturing process is a process of starting suction conveyance of the rotating drum 70 at the same time or immediately after that.

At the same time, in the manufacturing process (d), the carrier film 2 of the optical film laminate 1 is further wound at the peeling position 100 by the winding operation of R2 by the driving means 83 interlocking with the suction conveyance of the optical film sheet 3. On the other hand, the rotation operation of the rotary drum 70 is started from the position of the guide roller 80, whereby the optical film sheet 3 is peeled from the carrier film 2 and the optical film sheet 3 is removed together with the adhesive layer 4 from which the rotary drum 70 is exposed. A step of sucking and transporting to a predetermined position 400 on the downstream side.

In the manufacturing process (e), as shown in FIG. 13, when the leading end 31 of the optical film sheet 3 reaches the downstream side predetermined position 400, the holding means releases the holding state of the optical film laminate 1, and This is a step of releasing the film laminate 1. At the same time, (e) of the manufacturing process further includes a step of stopping the suction conveyance of the optical film sheet 3 by the rotating drum 70 and a step of stopping the winding operation of the carrier film 2 to R2 by stopping the operation of the driving means 83. including.

As shown in FIG. 13, the manufacturing process (f) returns the holding means 51 that has released the optical film laminate 1 to the predetermined upstream position 300, and the holding means 51 prepares the next holding operation; The position of the panel member 5 is detected by a sensor (not shown), the rotary drum 70 is restarted, the suction conveyance of the optical film sheet 3 is resumed, and the front end 31 of the optical film sheet 3 and the panel at the bonding position 200 The panel member 5 includes a step of adjusting the position of the tip 5 of the member 5 and a bonding means 210 including a rotating drum 70 and a bonding roller 201 cooperating with the rotating drum 70 at the bonding position 200. And a step of bonding the optical film sheet 3 sucked and conveyed to the rotary drum 70.

FIG. 13 shows another manufacturing method using the manufacturing apparatus 10 provided with the rotating drum 70 having the suction fixing portion 71 as the peeling means 110. The manufacturing steps (c) and (d) of the manufacturing method described above are shown in FIG. This is a substitute for (c ′) and (d ′) of the manufacturing process that has not been performed.

Specifically, (c ′) of the manufacturing process includes the step of transporting the optical film laminate 1 that is transporting the optical drum sheet 3 including the pressure-sensitive adhesive layer 4 peeled from the carrier film 2 by suction. In this step, the holding means 51 holds and fixes the both end portions 11. In the subsequent manufacturing process (d ′), at the same time, the holding means 51 moves by a distance L while holding the both end portions 11 of the optical film laminate 1. In the manufacturing process (d ′), the leading end 31 of the optical film sheet 3 peeled off from the carrier film 2 is sucked and conveyed by the rotary drum 70 and reaches a predetermined position 400 on the downstream side. The difference between them is that the holding device 50 starts the rotation start of the rotary drum 70 after the optical film laminate 1 is held and fixed, while the latter is the case where the holding device 50 starts after the rotation start of the rotary drum 70 is started. It exists in the point which hold | maintains and fixes the optical film laminated body 1 in conveyance.

In any manufacturing method, the bonding means 210 is composed of a pair of bonding rollers 201 and a rotating drum 70 as shown in FIG. 3, and the optical film sheet 3 is adhered at the bonding position 200. The optical display unit 6 is continuously manufactured by being bonded to the panel member 5 through the agent layer 4.

Effect

FIG. 14 is an explanatory view of a method for measuring the bonding accuracy of Examples and Comparative Examples. A rectangle indicated by a broken line on the surface of the panel member 5 is a position where the optical film sheet 3 is to be attached, and a rectangle indicated by a solid line is an actual attachment position of the optical film sheet 3. The bonding accuracy required in the manufacturing apparatus and manufacturing method using the RTP method of the present invention is about 5 to 6 units per minute based on the size of the panel member 5 of about 1200 mm × 750 mm and the size of the optical film sheet of about 1000 mm × 700 mm. Assuming the accuracy of the optical display unit 6 manufactured in (1), it is close to a specific image.

FIG. 15 shows an example and a comparative example of an RTP facility using a cross-sectional wedge-shaped structure having a top 61 as a peeling means. FIG. 15 shows the degree of deviation between the planned application position (broken line) and the actual application position (solid line) of the optical film sheet 3 in Example 1 and Comparative Example 1. The optical film sheet 3 used in Example 1 and Comparative Example 1 is a polarizing film manufactured by Nitto Denko Corporation (model: SEG1423DU), and the panel member 5 is a SHARP liquid crystal TV (model: AQUAS LC-55W30). The panel member taken out from the above was used. For the displacement distance, the distance from the rear end portion of the panel member in the conveyance direction to the rear end portion of the optical film sheet 3 in the same conveyance direction was manually measured, and the deviation distance from the planned pasting position was calculated based on the measured distance.

In Example 1, both end portions 11 of the optical film laminate 1 are moved by a certain distance L while being held by the holding means 51 of the holding device 50 at the upstream predetermined position 300, and the tip 31 of the optical film sheet 3 is downstream. By using a mechanism that the holding means 51 releases when the side predetermined position 400 is reached, the shift distance between the panel member 5 and the optical film sheet 3 attachment planned position in the optical display unit to which the optical film sheet 3 is attached is determined. It is measured. Incidentally, the moving distance L of the holding device 50 is set to 100 mm.

Comparative Example 1 is based on the same manufacturing apparatus that does not use the holding step of the holding device 50 that moves the both end portions 11 of the optical film laminate 1 by a certain distance L in a state where the both ends 11 are held by the holding device 50.

It is clear from FIG. 15 that the displacement distance of the size of the optical film sheet of about 1000 mm × 700 mm falls within the range of 0 to 0.1 mm after 10 measurements in Example 1 using the present invention. A deviation exceeding 1 mm does not occur. On the other hand, in the comparative example 1 by the manufacturing apparatus which does not use the holding | maintenance process of the holding | maintenance apparatus 50, all are 0.1 mm or more by 10 measurements. Moreover, the measurement within 0.2 mm is only once. This is the result that the deviation distance is almost 0.2 mm or more and varies around 0.3 mm so that some measurements exceed 0.3 mm.

These data clearly show that the bonding accuracy realized in the manufacturing apparatus and manufacturing method using the RTP method of the present invention is a high bonding accuracy that cannot be achieved with the conventional technology.

In the manufacturing apparatus and the manufacturing method by the RTP method, the optical film sheet 3 formed on the carrier film 2 of the long web-shaped optical film laminate 1 drawn out from R1 is moved to the left and right because it is a long web. It is difficult to accurately align the panel member 5 with the panel member 5. Therefore, as shown in Patent Document 4, until now, the panel member 5 must be aligned with the optical film sheet 3, and the position of the optical film sheet 3 is detected with high accuracy, and the position of the panel member is detected. In addition, a technique for aligning with the position of the optical film sheet 3 with high accuracy has been developed. However, due to the recent increase in size and narrowing of the display frame, even when positioning at the beginning of the attachment is performed with high accuracy, high pasting accuracy is maintained until the end of pasting due to misalignment during the pasting and film fluttering. It is difficult.

The manufacturing apparatus and the manufacturing method by the RTP method incorporating the process of moving the both end portions 11 of the optical film laminate 1 of the present invention by a certain distance L in a state where the both ends 11 are held by the holding device 50 are not achieved by the conventional technology. Accurate pasting accuracy can be obtained, and it can fully meet the recent demand for narrow frame.

The present invention has been described with reference to the embodiments and the drawings that are limited to the above. However, the present invention is not limited to the embodiments, and the technology of the present invention can be obtained by persons having ordinary knowledge in the technical field belonging to the present invention. It goes without saying that various modifications and variations are possible within the scope of the idea and the scope of the claims described below.

R1: Feeding device R2: Winding device R3: Cutting device 1: Optical film laminate 2: Carrier film 20: Back surface of carrier film 3: Optical film sheet 30: Back surface of optical film sheet 31: Tip 32 of optical film sheet : Optical film sheet rear end 4: adhesive layer 5: panel member 55: panel member front end 6: optical display unit 10: manufacturing device 12: score line 50: holding device 51: holding means 60: cross-sectional wedge structure Body 61: Top part 70: Rotating drum 71: Adsorption fixing part 80: Guide roller 81: Upstream guide roller 82: Driving means 83: Driving means 90: Optical laminated body or optical film sheet tip position detection sensor 91: Panel position detection sensor 100: peeling position 110: peeling means 200: bonding position 210: bonding means 201: bonding roller 202: bonding roller 3 0: upstream position 400: downstream position 501: holding position 510: holding arm 511: a pair of gripping means 512: suction cup or suction means 513: a pair of nip roller 514: holding portion 515: retaining portion 516: Cylinder 516
801: support 802: guide rail

Claims (19)

  1. Web-like optics comprising a carrier film, an adhesive layer formed on one surface of the carrier film, and a plurality of optical film sheets continuously supported on the carrier film via the adhesive layer By conveying the film laminate, peeling off the optical film sheet together with the pressure-sensitive adhesive layer from the carrier film at the peeling position, and bonding the optical film sheet to the panel member at the bonding position, thereby providing an optical display. A manufacturing apparatus for continuously manufacturing units,
    The manufacturing apparatus includes a holding device that reciprocates between the peeling position and a predetermined position upstream of the peeling position.
    The holding device holds the width direction including both ends of the optical film laminate at the upstream predetermined position, moves the optical film laminate by a certain distance while being held by the holding device, In the peeling position, the optical film laminate is released when the tip of the optical film sheet peeled together with the pressure-sensitive adhesive layer from the carrier film reaches a predetermined position on the downstream side of the peeling position. Manufacturing equipment.
  2. The manufacturing apparatus according to claim 1, wherein the holding device moves in synchronization with conveyance of the optical film laminate.
  3. The holding device includes holding means, and the holding means includes a pair of gripping means for holding the end of the optical film laminate, a suction cup or suction means for sucking one of the ends of the optical film laminate, or The manufacturing apparatus according to claim 1, which is one of a pair of cylindrical sandwiching rollers that sandwich an end portion of the optical film laminate.
  4. The manufacturing apparatus is provided with a cross-sectional wedge-shaped structure having a top at the peeling position, and the cross-sectional wedge-shaped structure is configured to convey the optical film laminate while the back surface of the carrier film is at the top at the peeling position. The optical film sheet is peeled off from the carrier film together with the pressure-sensitive adhesive layer, and the leading end of the peeled optical film sheet reaches the predetermined position on the downstream side. The manufacturing apparatus according to any one of 1 to 3.
  5. The manufacturing apparatus according to claim 4, wherein the predetermined position on the downstream side is downstream from the bonding position.
  6. The manufacturing apparatus includes a rotating drum having an adsorption fixing portion at the peeling position, and the rotating drum conveys the optical film laminate while the back surface of the optical film sheet is placed on the rotating drum at the peeling position. Adsorption is fixed, the optical film sheet is peeled off from the carrier film together with the pressure-sensitive adhesive layer, wound around the rotating drum, and the front end of the optical film sheet is sucked and conveyed to the predetermined position on the downstream side together with the pressure-sensitive adhesive layer. The manufacturing apparatus according to claim 1, wherein the manufacturing apparatus is configured as described above.
  7. The optical film laminate is an optical film sheet in which an optical film sheet including an adhesive layer formed in a rectangular shape is attached to the carrier film, or an optical film laminated on the carrier film via an adhesive layer The manufacturing apparatus according to claim 1, wherein the optical film sheet including the pressure-sensitive adhesive layer is formed by cutting in the width direction at regular intervals in the longitudinal direction.
  8. The holding position of the holding device with respect to the optical film laminate is a position in the vicinity of a rear end of the optical film sheet immediately before being sent to the bonding position. Manufacturing equipment.
  9. The holding position of the holding device with respect to the optical film laminate is a position in the vicinity of the tip of the optical film sheet next to the optical film sheet immediately before being sent to the bonding position. 8. The manufacturing apparatus according to any one of 7 above.
  10. The holding device is interlocked with the conveyance of the optical film laminate, corrects the slackness of the tension on both sides of the optical film laminate, or the strength due to the slackness of the tension, and is peeled from the carrier film and placed at the predetermined position on the downstream side. The manufacturing apparatus according to any one of claims 1 to 9, wherein a lateral shift or fluttering of the optical film sheet including the pressure-sensitive adhesive layer to be fed is suppressed.

  11. In an apparatus for manufacturing an optical display unit, a carrier film, an adhesive layer formed on one surface of the carrier film, and a plurality of optically supported on the carrier film via the adhesive layer A web-like optical film laminate including a film sheet is conveyed, and at the peeling position, the optical film sheet is sequentially peeled from the carrier film together with the pressure-sensitive adhesive layer, and at the bonding position, the optical film sheet is a panel member. Is a manufacturing method for continuously manufacturing an optical display unit by bonding together,
    The manufacturing apparatus includes a holding device that reciprocates between the peeling position and a predetermined position upstream of the peeling position.
    A holding step in which the holding device holds the width direction including both ends of the optical film laminate when the optical film laminate reaches the predetermined position on the upstream side; and
    An outward movement step in which the optical film laminate is moved by a certain distance while being held by the holding device; and
    A peeling step of peeling the optical film sheet together with the pressure-sensitive adhesive layer from the carrier film at the peeling position;
    When the front end of the optical film sheet reaches a predetermined position on the downstream side of the peeling position, the holding device releases the optical film laminate and returns to the predetermined position on the upstream side.
    A bonding step of bonding the optical film sheet peeled to the panel member at the bonding position by the adhesive layer;
    The manufacturing method characterized by comprising.
  12. The manufacturing method according to claim 11, wherein the holding device moves in a forward direction in synchronization with conveyance of the optical film laminate.
  13. The manufacturing apparatus is provided with a cross-sectional wedge-shaped structure having a top portion at the peeling position, and in the peeling step, the back surface of the carrier film is placed on the back surface of the carrier film at the peeling position while conveying the optical film laminate. The manufacturing method according to claim 11, wherein the optical film sheet is peeled off from the carrier film together with the pressure-sensitive adhesive layer by being bent at the top of the body.
     
  14. The manufacturing method according to claim 13, wherein the predetermined position on the downstream side is on the downstream side of the bonding position.
  15. The manufacturing apparatus includes a rotating drum having an adsorption fixing portion at the peeling position, and the peeling step rotates the back surface of the optical film sheet at the peeling position while transporting the optical film laminate. The adhesive film is adsorbed and fixed on a drum, the optical film sheet is wound from the carrier film together with the pressure-sensitive adhesive layer onto the rotating drum, and the optical film sheet is peeled off from the carrier film together with the pressure-sensitive adhesive layer. The manufacturing method in any one of 11 or 12.
  16. The optical film laminate is an optical film sheet in which an optical film sheet including an adhesive layer formed in a rectangular shape is attached to the carrier film, or an optical film laminated on the carrier film via an adhesive layer The manufacturing method according to claim 11, wherein the optical film sheet including the pressure-sensitive adhesive layer is formed by cutting in the width direction at regular intervals in the longitudinal direction.
  17. The manufacturing method according to claim 11, wherein the holding position of the holding device with respect to the optical film laminate is a position in the vicinity of the rear end of the immediately preceding optical film sheet.
  18. The holding position of the holding device with respect to the optical film laminate is a position near the tip of the optical film sheet next to the optical film sheet immediately before being sent to the bonding position. The manufacturing method in any one of 16.
  19. The forward movement step is linked to the conveyance of the optical film laminate, corrects the slackness of tension on both sides of the optical film laminate, or the strength due to the slackness of the tension, and is peeled off from the carrier film to the predetermined position on the downstream side. The manufacturing method according to any one of claims 11 to 18, wherein the optical film sheet including the pressure-sensitive adhesive layer sent to the substrate is prevented from being displaced in the lateral direction or fluttering.
PCT/JP2017/036136 2016-10-18 2017-10-04 Manufacturing device and manufacturing method for optical display unit WO2018074235A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2016-204522 2016-10-18
JP2016204522 2016-10-18
JP2016205082A JP6379150B2 (en) 2016-10-18 2016-10-19 Manufacturing apparatus and manufacturing method of optical display unit
JP2016-205082 2016-10-19

Applications Claiming Priority (3)

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CN201780064094.0A CN109844623A (en) 2016-10-18 2017-10-04 The manufacturing device and manufacturing method of optical display unit
US16/341,397 US10562285B2 (en) 2016-10-18 2017-10-04 Manufacturing apparatus and manufacturing method of optical display unit
KR1020197011673A KR102045767B1 (en) 2016-10-18 2017-10-04 Manufacturing apparatus and manufacturing method of optical display unit

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005043384A (en) * 2002-07-04 2005-02-17 Fuji Photo Film Co Ltd Method and apparatus for sticking polarizing plate
JP2011257463A (en) * 2010-06-07 2011-12-22 Yodogawa Medec Co Ltd Polarizing plate sticking device and method for sticking polarizing plate using the same
WO2013163827A1 (en) * 2012-05-04 2013-11-07 深圳市华星光电技术有限公司 Polarizing-piece stripping machine and method thereof for stripping polarizing-piece
JP2014115615A (en) * 2012-11-19 2014-06-26 Nitto Denko Corp Method and device for manufacturing optical display device
JP2015045820A (en) * 2013-08-29 2015-03-12 住友化学株式会社 Film lamination apparatus, production system of optical display device, and production method of optical display device
US20150190995A1 (en) * 2014-01-08 2015-07-09 Lg Chem Ltd. System for laminating optical film and method for manufacturing display unit using the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005043384A (en) * 2002-07-04 2005-02-17 Fuji Photo Film Co Ltd Method and apparatus for sticking polarizing plate
JP2011257463A (en) * 2010-06-07 2011-12-22 Yodogawa Medec Co Ltd Polarizing plate sticking device and method for sticking polarizing plate using the same
WO2013163827A1 (en) * 2012-05-04 2013-11-07 深圳市华星光电技术有限公司 Polarizing-piece stripping machine and method thereof for stripping polarizing-piece
JP2014115615A (en) * 2012-11-19 2014-06-26 Nitto Denko Corp Method and device for manufacturing optical display device
JP2015045820A (en) * 2013-08-29 2015-03-12 住友化学株式会社 Film lamination apparatus, production system of optical display device, and production method of optical display device
US20150190995A1 (en) * 2014-01-08 2015-07-09 Lg Chem Ltd. System for laminating optical film and method for manufacturing display unit using the same

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