TWI668175B - Conveying device for conveying long optical film with slit and continuous manufacturing system of optical display panel - Google Patents

Abstract

[Offer] When the optical film formed with a slit is transported by a transport device with a roller, when the transport is stopped, warpage of the optical film is prevented from the slit that is placed on the roller. The invention is a conveying device for conveying a long optical film with a slit, which has: a conveying direction changing roller, which sets the optical film to the inside and erects the optical film within a predetermined angle range; Arranged at a predetermined interval, sandwiching the optical film, and having a surface that changes the curved surface of the roller along the conveying direction; a mask drive unit that moves the mask toward the conveying direction changing roller side; and a mask drive control unit, In the transport of the optical film, a predetermined interval is set to wait for the mask, and when the transport of the optical film has stopped, the mask is moved to the side of the transport direction change roller, so that the mask and the optical film are erected on the transport Part of the direction change roller abuts.

Description

Conveying device for conveying long optical film with slit and continuous manufacturing system of optical display panel

Field of invention

The invention relates to a conveying device for conveying a long optical film with a slit, and a continuous manufacturing system of an optical display panel.

Background of the invention

It is known that, for example, in a multilayer film with a multilayer structure, the laminated film is cut without cutting the outermost layer of the separator, that is, a so-called half-cut method. In this half-cut, if the cut (cut) is placed on the roller (cover) toward the outside, "warping" (or peeling or cutting of the end of the cut) of the laminated film will occur from the cut The floating tip of the seam). When the transport line of the laminated film has stopped, if the slit of the laminated film is located at the position of the covering roller, the "warpage" will be significantly generated.

Patent Document 1 discloses a peeling prevention device that can prevent “warpage” that occurs when the transport direction is changed by 90 ° or more in particular during the transport of the optical film.

Prior technical literature Patent Literature

Patent Document 1: Japanese Patent Laid-Open No. 2009-186996

Summary of the invention

In the case of the peeling prevention device shown in FIG. 7 of Patent Document 1, because there is a gap between the pressing member and the optical film, there is a possibility that the optical film will warp and come into contact with the pressing member when the film transport has been stopped. Assuming that the optical film warps and starts to be transported again in a state of being in contact with the pressing member, the optical film will be in a state of being in contact with the pressing member, causing subsequent optical members to also warp. In addition, the warped optical film is clogged in the gap, and the optical film cannot be transported.

In the case of the peeling prevention device shown in FIG. 8 of Patent Document 1, although the optical film is transported while being sandwiched by a plurality of small-diameter rollers, if the slit stops at the gap between the small-diameter rollers, Then there is also the doubt that the front end of the film is warped. Assuming that the conveyance starts directly in the state where the optical film is warped, the warpage will be further progressed due to contact with the small-diameter roller.

In the case of the peeling prevention device shown in FIG. 9 of Patent Document 1, although the optical film is sandwiched over the entire surface by the ring-shaped sheet, warpage as shown in FIGS. 7 and 8 does not occur, but Complicates the device. In addition, even when the film transport line has not been stopped, the ring sheet is always in contact with the optical film on the entire surface, and there is a possibility that the optical film will be rubbed by the ring sheet.

In the case of the peeling prevention device shown in FIG. 10 of Patent Document 1, it is possible to penetrate the non-physical contact by blowing air The optical film is sandwiched over the entire surface, so there is no problem of warpage as shown in FIGS. 7 and 8 or friction as shown in FIG. 9, but the device is still complicated. In addition, there is a possibility that the air flow in the manufacturing apparatus is disturbed by the blowing of air and the foreign matter is stirred.

Therefore, an object of the present invention is to provide a conveying device that can prevent a slit formed in a state of being erected on a roller when the optical film formed with slits is conveyed by a conveying device with rollers when the conveyance is stopped Warpage of optical film.

In addition, another object is to provide a continuous manufacturing system for an optical display panel, which can continuously produce an optical display panel without warping from the slit of the optical film when the transportation is stopped.

In order to solve the above-mentioned problems, as a result of repeated detailed studies, the following invention has been completed.

The present invention is a conveying device that conveys a long optical film having a slit (S) in a direction orthogonal to the longitudinal direction, that is, in the width direction. The long optical film has at least an optical functional film and a transmission The release film laminated with the adhesive layer and the optical functional film, and a slit is formed in the optical film excluding the release film, and the conveying device includes a conveying direction changing roller to turn the release film toward the inside and in a prescribed manner The long optical film is erected within the angle range; the mask is arranged with a predetermined interval (D1) relative to the conveying direction changing roller, and the long optical film is sandwiched between (and will not be Its contact), and has a surface (inside curved surface) that changes the curved surface of the roller along the conveying direction; a mask drive unit that moves the mask toward the conveying direction changing roller side; and a mask drive control unit During the transport of the optical film, the predetermined interval (D1) is set and the mask is standby (standby position P1), and when the transport of the long optical film has been stopped, the mask is changed in the transport direction The (side abutment position P2) of the roller side is moved, and the (the inner curved surface of) the mask (the inner curved surface) is brought into contact with the portion (roller contact portion) where the long optical film is placed on the conveying direction changing roller.

The "prescribed angle range" is the range of the angle θ (refer to FIG. 3) formed by the upstream optical film and the downstream optical film with the conveying direction changing roller as the center, and can be greater than 0 ° and less than 180 °. θ is 0 °, which means that the upstream optical film and the downstream optical film are in a straight line, and θ is 180 °, which means that the upstream optical film transport direction and the downstream optical film transport direction are parallel to each other and become opposite directions. . Depending on the arrangement of the guide rollers, the angle θ may exceed 180 °. The angle θ corresponds to the change range of the conveying direction.

The "predetermined interval (D1)" is a length that is at least greater than the thickness of the long optical film, and is defined as the distance from the outer surface of the roller (P3) in the conveying direction to the inner curved surface (P1) of the mask. The "predetermined interval (D1)" can be exemplified as 1.1 times or more and 100 times or less the thickness of the long optical film. In FIG. 2A, when a predetermined interval D1 and a length D2 are provided, the thickness of the optical film may be the same as or above (D1-D2), and the length D2 is from the standby position P1 The length to the contact position P2. When the optical film is pressed against the roller by the mask, it is preferable to set the contact position P2 to such an extent that the optical film does not deform or the adhesive layer oozes out.

When the transport of the long optical film has stopped, the mask drive control unit of the above invention determines that the long optical film is erected on the portion (roller contact portion) of the transport direction changing roller having the slit, The mask drive unit may be controlled so that the mask moves toward the conveying direction changing roller.

The aforementioned transport direction changing roller of the above invention may be a guide roller that has been fixed with respect to the transport device, in addition to rotating around an axis orthogonal to the transport direction. The guide roller may be provided in the fixed part.

In the above invention, the conveying direction changing roller may be a dancer roller that can move in the vertical direction or the horizontal direction relative to the conveying device. The present invention may have a drive unit that moves the tension roller.

The above invention is constituted as a unit having one or more conveying direction changing rollers (tension rollers and / or guide rollers), the mask and the mask driving unit, and the unit may also constitute a path length The changing section, the path length changing section changes the path length of the long optical film transport path. The path length changing unit may also be called an accumulation device.

According to the above invention, when the conveyance is stopped, the mask is moved to the conveying direction changing roller side, and the inner curved surface of the mask is brought into contact with the portion (the roller contact portion) where the optical film is erected on the conveying direction changing roller It can properly prevent the optical film from warping from the slit.

A continuous manufacturing system of an optical display panel of another invention includes: a continuous manufacturing device that bonds a first optical film having at least an optically functional film to the first surface of an optical unit and / or a second optical film having at least an optically functional film The film is attached to the second surface of the optical unit to manufacture an optical display panel; and the aforementioned conveying device.

In the above invention, the manufacturing apparatus may be configured to attach a single-piece first optical film to the first surface of the optical unit to be transported, or to apply a single-piece first optical film The film is attached to the first surface of the optical unit, and the monolithic first optical film is a first release film leaving a long strip while pulling the first long optical film from the first optical film roll And cutting the film obtained by cutting the first long optical film, and / or, the monolithic second optical film with the optical axis of the first optical film and the optical axis of the second optical film becomes prescribed The angle is arranged by attaching to the second surface of the optical unit to be transported, or a single-piece second optical film with the optical axis of the first optical film and the light of the second optical film The axis will be arranged at a predetermined angle and attached to the second surface of the optical unit. The monolithic second optical film is drawn out from the second optical film roll while pulling the second long optical film Leaving the second The film obtained after releasing the film and cutting the aforementioned second long optical film.

According to the above invention, the optical display panel can be continuously produced without warping from the slit of the optical film when the transportation is stopped.

In the present invention, the "optical film roll" is a long release film and a long optical film (adhesive layer, optical functional film, and surface protective film) stacked in this order to form a roll shape.

"Roll to panel method" is a release film and a long optical film drawn from a roll of optical film, leaving the release film and cut (half-cut) and adhere in the width direction Agent layer, optical functional film and surface protective film, and strip the long release film from the monolithic optical film obtained after cutting, and then stick the monolithic optical film to the optical unit through the exposed adhesive layer The way.

On the other hand, as a method of bonding optical films different from the roll-to-panel method, there is a "sheet to panel method". The “sheet-to-panel method” is a method in which a single-layer optical film previously prepared in a single-sheet state is bonded to an optical unit by peeling off a single-layer release film or a long release film to expose an adhesive layer the way.

"Optical film roll with slit" is a single-layer optical film (adhesive layer, optical functional film and surface protective film) stacked on the long release film in the longitudinal direction to form a roll shape Reel.

5‧‧‧LCD unit

5a‧‧‧First side, first substrate

5b‧‧‧Second side, second substrate

10‧‧‧The first elongated optical film laminate

11‧‧‧The first long polarizing film

12‧‧‧The first strip release film

20‧‧‧Second long optical film laminate

21‧‧‧Second long polarizing film

22‧‧‧Second long release film

30‧‧‧ First Cutoff Department

30a‧‧‧First Adsorption Department

31, 37, 231, 237‧‧‧ guide roller

32‧‧‧First guide roller

33‧‧‧First tension roller

34‧‧‧Second guide roller

35‧‧‧Second tension roller

36‧‧‧third guide roller

40‧‧‧ First Road Length Change Department

41‧‧‧ First mask

41a‧‧‧Inner surface

42‧‧‧The second mask

43‧‧‧The third mask

45‧‧‧ First mask drive unit

46‧‧‧The second mask drive unit

47‧‧‧ Third mask drive unit

48‧‧‧Mask drive control unit

50‧‧‧The first divestiture department

61‧‧‧The first reeling department

80‧‧‧ First Attachment Department

81‧‧‧The first attached roller

82‧‧‧ First drive roller

100‧‧‧Continuous manufacturing equipment

110‧‧‧The first release film conveying device

111‧‧‧The first monolithic polarizing film

120‧‧‧Panel conveying device

210‧‧‧Second release film conveying device

211‧‧‧Second monolithic polarizing film

230‧‧‧Second Cut-off Department

230a‧‧‧Second adsorption section

232‧‧‧The fourth guide roller

233‧‧‧Tension roller

234‧‧‧ fifth guide roller

235‧‧‧Tension roller

236‧‧‧Sixth guide roller

240‧‧‧Second Road Length Change Department

241‧‧‧ Fourth Mask

242‧‧‧The fifth mask

243‧‧‧Sixth mask

250‧‧‧Second divestiture

261‧‧‧The second take-up department

280‧‧‧Second Attachment Department

281‧‧‧Second posted roller

282‧‧‧Second drive roller

321‧‧‧The first roller contact part

341‧‧‧The second roller contact part

361‧‧‧Contact part of the third roller

D1‧‧‧ specified interval

D2‧‧‧Length

P1‧‧‧ Standby position

P2‧‧‧ abutment position

P3‧‧‧Outer surface

R1‧‧‧The first optical film reel

R2‧‧‧Second optical film reel

S, S1, S2

x‧‧‧ Route

Y‧‧‧LCD display panel

θ‧‧‧angle

FIG. 1A is a schematic diagram showing an example of a continuous manufacturing system of an optical display panel.

FIG. 1B is a schematic diagram showing an example of a continuous manufacturing system of an optical display panel.

FIG. 2A is a schematic view of a mask located in a standby position.

2B is a schematic view of the mask moved to the contact position.

FIG. 3 is a diagram for explaining the angle θ.

Forms for carrying out the invention

Hereinafter, referring to FIGS. 1A, 1B, 2A, and 2B, the continuous manufacturing system of the optical display panel will be described more specifically, but the present invention is not limited to the aspect of the present embodiment.

The optical display panel will be described as a liquid crystal display panel, the optical unit as a liquid crystal cell, and the optical film as a polarizing film.

The continuous manufacturing system of the liquid crystal display panel has the continuous manufacturing apparatus 100. The continuous manufacturing apparatus 100 attaches the first monolithic polarizing film 111 to the first surface 5a of the liquid crystal cell 5, and the first monolithic polarizing film 111 is pulled out from the first optical film roll R1 by a first length The strip-shaped thin film 12 and the first long polarizing film 11 are thin films obtained by cutting the first long polarizing film 11. In addition, the continuous manufacturing apparatus 100 attaches the second monolithic polarizing film 211 such that the absorption axis of the first monolithic polarizing film 111 and the absorption axis of the second monolithic polarizing film 211 are orthogonal to each other. The second surface 5b of the liquid crystal cell 5 is used to manufacture a liquid crystal display panel Y. The second monolithic polarizing film 211 pulls out the second strip-shaped release film 22 and the second length from the second optical film roll R2. The strip polarizing film 21 is a thin film obtained by cutting the second strip polarizing film 21.

In the continuous manufacturing system of the liquid crystal display panel, the continuous manufacturing apparatus 100 is arranged at a position where the liquid crystal cell 5 and the liquid crystal display panel Y are transported Series of panel transport devices 120. The route of the panel conveying device 120 is x and is drawn as a straight line, but it is not limited to a straight line.

(Optical film reel)

As an optical film reel formed by winding a long polarizing film, for example: (1) a long polarizing film having a release film and a long polarizing film formed on the release film, which is a continuous web (web) The long optical film laminate in the form is wound into a roll-shaped roll. In this case, the continuous manufacturing system of the liquid crystal display panel has a cutting device in order to form a monolithic polarizing film (sheet) from the long polarizing film, and the cutting device leaves a release film and is in contact with the release film. The long polarizing film (including the adhesive layer) is cut (half-cut) at predetermined intervals in the direction orthogonal to the feed direction (a slit is formed).

Further, examples of the optical film roll include, for example, (2) a long optical film laminate having a release film and a monolithic polarizing film (including an adhesive layer) wound into a roll-shaped roll ( The so-called polarizing film roll with slits), the polarizing film is located on the release film and is adjacent to each other across the slit in a direction orthogonal to the feed direction of the release film.

The first optical film roll R1 shown in FIG. 1A is a roll of a first elongated optical film laminate 10 having a first elongated release film 12 and a first elongated polarizing film (including the adhesive layer) 11 When wound into a roll, the first long polarizing film 11 is formed on the first long release film 12 through an adhesive layer, and has an absorption axis parallel to the feed direction (longitudinal direction).

The second optical film roll R2 shown in FIG. 1B is composed of a second elongated release film 22 and a second elongated polarizing film (including its adhesive layer) 21 The second elongated optical film laminate 20 is rolled into a roll-shaped reel. The second elongated polarizing film 21 is formed on the second elongated release film 22 through the adhesive layer and has a feed direction ( Long side direction) parallel absorption axis.

The first and second long polarizing films 11 and 21 are, for example, a polarizer (with a thickness of about 5 to 80 μm) and one or both sides of the polarizer with or without an adhesive The polarizer protective film (generally, the thickness is about 1 ~ 500μm) is formed.

Examples of the other films constituting the first and second elongated polarizing films 11 and 21 include, for example, a retardation film (generally, a thickness of 10 to 200 μm), a viewing angle compensation film, a brightness enhancement film, and a surface protection film. The thickness of the first and second long polarizing films 11 and 21 may be, for example, in the range of 10 μm to 500 μm.

The adhesive constituting the adhesive layer of the first and second long polarizing films 11 and 21 is not particularly limited, and examples thereof include acrylic adhesives, polysiloxane adhesives, and urethane adhesives. The thickness of the adhesive layer is preferably in the range of 10-50 μm, for example. For the first and second release films 12, 22, for example, conventionally known films such as plastic films (for example, polyethylene terephthalate-based films, polyolefin-based films, etc.) can be used. In addition, conventionally suitable films such as films coated with an appropriate release agent such as polysiloxane-based, long-chain alkyl-based, fluorine-based, or molybdenum sulfide may be used as required.

(LCD panel)

The liquid crystal display panel Y is a panel in which at least a polarizing film is formed on one side or both sides of the liquid crystal cell 5, and a driving circuit can be installed according to requirements. The liquid crystal cell 5 can use, for example, a vertical alignment (VA) type, in-plane switching (IPS) Any type of liquid crystal cell. The liquid crystal cell 5 is a structure in which a liquid crystal layer is sealed between a pair of substrates (first substrate 5a, second substrate 5b) arranged opposite to each other.

(Continuous manufacturing equipment)

The continuous manufacturing apparatus 100 includes a first release film conveying device 110, a first attaching portion 80, a second release film conveying device 210, and a second attaching portion 280.

As shown in FIG. 1A, the first release film conveying device 110 pulls the first long release film 12 and the first long polarizing film 11 (first long optical film layered) from the first optical film roll R1. Body 10), while being transported toward the first attaching portion 80.

In this embodiment, the first release film transport device 110 includes a first cutting unit 30, a first path length changing unit 40, a first peeling unit 50, and a first winding unit 61.

The first cutting portion 30 fixes the first elongated optical film laminate 10 from the side of the first elongated release film 12 by the first suction portion 30a, and leaves the first elongated release film 12 while keeping the width The first long polarizing film (including the adhesive layer) 11 is cut in the direction, and a first monolithic polarizing film 111 is formed on the first long release film 12.

Examples of the first cutting section 30 include a cutter, a laser device, and the like. The first suction part 30a may be, for example, an adsorption plate that has a plurality of holes connected to a vacuum pump and that can suck air from the holes by negative pressure.

The first path length changing unit 40 includes a plurality of conveying direction changing rollers, first, second, and third masks 41, 42, 43, and first, The second and third mask drive units 45, 46, and 47 are configured.

The plurality of conveying direction changing rollers include: guide rollers (31, 37), the first elongated release film 12 is directed outward and the first elongated polarizing film 11 (the first elongated optical film laminate 10) is installed; 1. The second tension rollers 33, 35 can move up and down; and the first, second, and third guide rollers 32, 34, 36 direct the first long release film 12 toward the inside and set up the first long polarized light Film 11 (first elongated optical film laminate 10).

The first, second, and third masks 41, 42, 43, and the first, second, and third masks are arranged in a manner corresponding to the first, second, and third guide rollers 32, 34, and 36 Drive unit 45, 46, 47. The actions of the first, second, and third masks 41, 42, 43 will be described later.

The first peeling portion 50 will fold the first long release film 12 toward the inside with its front end portion, and peel off the first monolithic polarizing film 111 from the first long release film 12. The peeled first monolithic polarizing film 111 is supplied to the first attaching portion 80.

In the present embodiment, as the first peeling portion 50, a sharp blade edge portion is used at the front end portion, but it is not limited thereto.

The first winding part 61 winds the first long release film 12 after the first monolithic polarizing film 111 is peeled off. The first winding section 61 may be composed of an automatic rotating roller.

The first attaching portion 80 attaches the first strip that has been peeled off by the first peeling portion 50 from the side (first surface 5a) of the liquid crystal cell 5 transported by the panel transport device 120 through the adhesive layer The first monolithic polarizing film 111 after the release film 12.

In the present embodiment, the first attaching portion 80 is composed of the first attaching roller 81 and the first driving roller 82.

As shown in FIG. 1B, for various devices for attaching the second monolithic polarizing film 211 to the other surface (second surface 5 b) of the liquid crystal cell 5, the various components and devices described above can be used.

The second release film transport device 210 pulls the second long release film 22 and the second long polarizing film 21 (second long optical film laminate 20) from the second optical film roll R2 while The second attachment part 280 is transported.

In this embodiment, the second release film transport device 210 includes a second cutting unit 230, a second path length changing unit 240, a second peeling unit 250, and a second winding unit 261.

The second release film conveying device 210 can be constituted by the same device as the first release film conveying device 110, and the second attachment part 280 can be constituted by the same device as the first attachment part 80.

For example, the second cutting portion 230 and the second suction portion 230a can be configured by the same device as the first cutting portion 30 and the first suction portion 30a. The second path length changing unit 240 can be configured by the same device as the first path length changing unit 40. The second winding unit 261 can be configured by the same device as the first winding unit 61. The second attachment roller 281 and the second drive roller 282 can be constituted by the same mechanism as the first attachment roller 81 and the first drive roller 82.

The panel conveying device 120 is a series of conveying devices that convey the liquid crystal cell 5 and the liquid crystal display panel Y to which the second monolithic polarizing films 111 and 211 are attached on both sides of the liquid crystal cell 5. The panel conveying device 120 is configured by, for example, a conveying roller, a suction cup, and the like.

In this embodiment, the panel conveying device 120 includes: a rotation mechanism that horizontally rotates the liquid crystal cell 5 to which the first monolithic polarizing film 111 is attached by 90 °; and an inversion mechanism to attach the first monolithic shape The liquid crystal cell 5 of the polarizing film 111 is turned upside down.

(Mask action)

FIG. 2A shows a state where the first, second, and third masks 41, 42, and 43 are waiting at the standby position P1.

The first mask 41 is arranged above the first guide roller 32 at a predetermined interval D1, the second mask is arranged above the second guide roller 34 at a predetermined interval D1, and the third mask 43 is predetermined The interval D1 is arranged above the third guide roller 36.

The first mask 41 has the same length as the length of the roller in the longitudinal direction of the first guide roller 32, which is a conveying direction changing roller, and has an inner curved surface 41a along the curved surface of the roller. In FIG. 2A (viewed from the side), both ends of the mask on the extension of the inner curved surface 41a have a shape curved toward the outside of the mask. The first mask 41 is configured in such a manner that it is connected to the first mask driving part 45, and the first mask 41 can be driven to the first position at the standby position P1 by the driving operation of the first mask driving part 45 The contact position P2 on the guide roller 32 side moves back and forth. By moving to the abutment position P2, the first mask 41 will press the first monolithic polarizing film 111 against the first guide roller 32 side, so that the warpage from the slit S can be properly prevented.

The second mask 42 and the third mask 43 also have the same configuration as the first mask 41. The second mask 42 is configured in such a manner that it is connected to the second mask driving part 46 and is driven by the second mask driving part 46 In this way, the second cover 42 can move back and forth from the standby position P1 to the contact position P2 on the second guide roller 34 side. At the contact position P2, the second mask 42 presses the first monolithic polarizing film 111 against the second guide roller 34 side.

The third mask 43 is configured in such a manner that it is connected to the third mask drive unit 47 and is driven by the third mask drive unit 47 to allow the third mask 43 to reach the third guide at the standby position P1 The contact position P2 on the side of the roller 36 moves back and forth. At the contact position P2, the third mask 43 presses the first monolithic polarizing film 111 against the third guide roller 36 side.

The first, second, and third mask drive units 45, 46, and 47 may include, for example, linear actuators such as air cylinders, hydraulic cylinders, and electric cylinders, but are not limited thereto.

The mask drive control unit 48 determines that the first long optical film laminate 10 is erected on the first, second, and third guide rollers 32 when the transport of the first long optical film laminate 10 has stopped. The first, second, and third roller contact portions 321, 341, and 361 of the 34, 36 (conveying direction changing roller) have slits, which control the first, second, and third mask drive parts 45, 46, and 47 To move the first, second, and third masks 41, 42, 43 toward the first, second, and third guide rollers 32, 34, and 36.

The mask drive control unit 48 may also determine whether the slit S is located in the first, second, and third roller contact portions 321, 341, and 361 based on the position data of the slit S acquired in advance.

The position data of the slit S can be obtained from the cutting position data when the first long polarizing film 11 is cut in the width direction, or it can be formed After the slit S, it can be obtained from the image data that can specify the slit position photographed by the imaging unit, or can also be obtained from the detection data of the slit position detected by the optical sensor.

Furthermore, if the first elongated polarizing film with slits is wound into a roll-shaped optical film reel without the first cutting portion, it is possible to store the slit position data from the memory Media (local PC or server memory, radio frequency identification tag (RFID Tag: Radio Frequency Identification Tag), etc.) or code data (QR code (registered trademark), barcode, etc.) are obtained.

The mask drive control unit 48 may also analyze at least the images of the first, second, and third roller contact portions 321, 341, and 361 captured by the imaging unit when the transport of the first long optical film laminate 10 has stopped. In the image data, if the slit S is located at the first, second, and third roller contact portions 321, 341, and 361, the mask is moved.

As a case where the conveyance of the first long optical film laminate 10 is stopped, for example, the conveyance is stopped by an operator's operation, and the first monolithic polarizing film 111 is adhered by the first attaching portion 80 The conveyance at the time of processing attached to the liquid crystal unit 5 is stopped, and the conveyance at the end of the work is stopped.

The mask drive control unit 48 may receive a stop signal for film transport from a system control unit (not shown) and perform control to move the mask from the standby position P1 to the contact position P2 based on the stop signal.

When the interval between the slits is constant, in the attaching process performed by the first attaching portion 80, the length of the first monolithic polarizing film 111 in the conveying direction is all the same, so the slits can be known in advance Is S located The first, second, and third roller contact portions 321, 341, and 361. In this case, it is only necessary to move the mask to the minimum necessary. As shown in FIG. 2B, because the slits S1, S2 are located in the first and third roller contact portions 321, 361, only the first and third shields 41, 43 are moved to the contact position P2.

In consideration of the defects existing in the first long polarizing film 10, the position of the slit is changed, that is, the so-called skip cut method, there will be a gap between the slits that becomes narrower, resulting in a cut The case where the slit is located at the contact portion of each roller and the slit is not located at the contact portion of each roller. Even in this case, since the mask drive control unit 48 can determine whether the slit is located at the roller contact portion from the cutting position data (the slit position data) at the time when the film transport is stopped, the mask can be correctly controlled mobile.

The mask drive control unit 48 moves the moved mask to the standby position P1 before the first long optical film laminate 10 is transported (or started) again.

Examples of the case where the transport of the first long optical film laminate 10 is restarted include, for example, restarting the transport by the operation of the operator, and performing the first monolithic polarizing film by the first attaching section 80 111. The conveyance at the time of the process of attaching to the liquid crystal cell 5 restarts, etc.

The mask drive control unit 48 can be configured to receive a restart signal for film transport from a system control unit (not shown), return the mask from the abutment position P2 to the standby position P1, and restart the film transport thereafter.

It may be so configured that the control unit starts to convey the film again after receiving the signal indicating that all the masks are at the standby position P2. Or, it can be configured such that after the mask movement starts and after a predetermined time, the movement starts again. Send film.

The second path length changing unit 240 is provided with a plurality of conveying direction changing rollers, fourth, fifth, and sixth masks 241, 242, 243, and fourth, fifth, and sixth mask driving units (not shown) And constitute.

The plurality of conveying direction changing rollers include: guide rollers (231, 237) that direct the second strip-shaped release film 22 toward the outside and set up a second strip-shaped polarizing film 21 (second strip-shaped optical film laminate 20); 3. The fourth tension rollers 233, 235 can move up and down; and the fourth, fifth, and sixth guide rollers 232, 234, and 236 direct the second strip release film 22 toward the inside and set up the second strip polarized light Film 21 (second elongated optical film laminate 20).

The fourth, fifth, and sixth masks 241, 242, and 243 and the fourth, fifth, and sixth masks are arranged in a manner corresponding to the fourth, fifth, and sixth guide rollers 232, 234, and 236 Drive unit (not shown). The operations of the fourth, fifth, and sixth masks 241, 242, and 243 are the same as those of the first, second, and third masks 41, 42, and 43 described above.

(Other embodiments of masking action)

The present invention is not limited to the above-described embodiment, and the mask drive control unit 48 may perform control to move all the masks when the film transport is stopped. In this case, it may be determined whether or not the slit S is located in the first, second, and third roller contact portions 321, 341, and 361.

In addition, in the above-mentioned embodiment, although it is a structure which moves the mask with respect to the fixed guide roller of the path length changing part, it is not limited to this, and it may be a vertical movement with respect to vertical or The tension roller moves horizontally to configure the mask, and the mask follows the movement of the tension roller The composition of line movement.

Moreover, it is not limited to the structure which moves a mask with respect to the guide roller of a path length change part, It may be a structure which moves a mask with respect to the other guide roller fixed to the conveying apparatus.

(Other embodiments)

In addition, in the embodiment, although it has a first and second tension rollers 33, 35 and first, second, and third guide rollers 32, 34, and 36 that can move up and down, The structure of the first, second, and third masks 41, 42, 43 corresponding to the second and third guide rollers 32, 34, and 36 that can move up and down is not limited to this, for example, the tension roller may be One or more than two, and the guide roller can also be one or more than two. In addition, the configuration is not limited to three guide rollers to two tension rollers. For example, two guide rollers to one tension roller and four guide rollers to three tension rollers may be used. In addition, the same number of masks as the number of guide rollers are provided. The guide rollers are directed toward the inside of the first long stripped film and the first long polarized film (first long optical film laminate) is erected. Guide the rollers.

(Continuous manufacturing method of liquid crystal display panel)

The continuous manufacturing method of a liquid crystal display panel includes a manufacturing step of attaching a first optical film having at least an optical functional film (such as a polarizing film) to the first surface of an optical unit, and having at least an optical functional film (such as a polarizing film) The second optical film is attached to the second surface of the optical unit to manufacture a liquid crystal display panel.

The manufacturing steps include: moving the mask, moving the long optical film During delivery, set a predetermined interval and make the mask stand by, and when the transport of the long optical film has stopped, move the mask to the side of the transport direction change roller, so that the mask and the long optical film are erected on the transport Part of the direction change roller abuts.

(Other embodiments)

In this embodiment, the first monolithic polarizing film 111 is attached from the lower side of the liquid crystal cell 5, and then the liquid crystal cell 5 to which the first monolithic polarizing film 111 is attached is inverted (forward and reverse inversion is possible. Rotate 90 ° as needed), and then attach the second monolithic polarizing film 211 from the lower side of the liquid crystal cell 5. However, the first monolithic polarizing film may be attached from the upper side of the liquid crystal cell 5, and then the liquid crystal cell 5 may be inverted, and the second monolithic polarizing film may be attached from the upper side of the liquid crystal cell 5, or the liquid crystal may also be attached from the liquid crystal. The first monolithic polarizing film is attached to the upper side of the cell, and the second monolithic polarizing film is attached from the lower side of the liquid crystal cell without inverting the liquid crystal cell, or from the lower side of the liquid crystal cell The first monolithic polarizing film is attached, and the second monolithic polarizing film is attached from the upper side of the liquid crystal cell without inverting the liquid crystal cell. In addition, the first monolithic polarizing film and the second monolithic polarizing film may be simultaneously attached from the upper side and the lower side of the liquid crystal cell.

Furthermore, in this embodiment, although the configuration in which the optical film is attached to both sides of the optical unit in the so-called "roll-to-panel system" is exemplified, it is not limited to this, and "sheet-to-panel" "Method" The optical film is attached to both sides of the optical unit, or one side of the optical unit can be "roll-to-panel mode", and the other side is "sheet-to-panel mode".

In addition, in this embodiment, although an optical film roll is used, the configuration of the roll-shaped optical film is not limited to this, and a so-called "slit optical film roll" may be used.

Furthermore, in this embodiment, the long polarizing film pulled out from the optical film roll is cut at predetermined intervals, but the present invention is not particularly limited to this configuration. For example, the long polarizing film pulled out from the optical film reel may be inspected for defects, and based on the inspection result, the defect may be cut to avoid defects (so-called jump cut). In addition, it is also possible to read the defect information attached to the long polarizing film or the mark attached to the defect position, and cut off in a manner that avoids the defect based on the defect information or mark.

In this embodiment, although the long polarizing film has an absorption axis parallel to the longitudinal direction, the direction of the absorption axis of the long polarizing film is not limited to this. For example, the first long polarizing film may have an absorption axis parallel to its short side direction (width direction), and the second long polarizing film may have an absorption axis parallel to its long side direction. In this case, the rotation mechanism for horizontally rotating the liquid crystal cell to which the first monolithic polarizing film is attached by 90 ° can be appropriately omitted.

In this embodiment, although the liquid crystal cell is exemplified as the optical cell, it is not limited to this, and the optical cell may be an organic EL cell.

The organic EL unit has a structure in which an electroluminescent layer is sandwiched between a pair of electrodes. The organic EL unit may use, for example, a top emission method, a bottom emission method, or a double-sided emission method. Any type of organic EL unit such as emission) method. The organic EL display panel is a panel with a polarizing film attached to one side or both sides of the organic EL unit, and a driver circuit can be installed according to needs.

Claims (5)

A conveying device is a conveying device that conveys a long optical film with a slit in the direction orthogonal to the long side direction, that is, in the width direction, the long optical film has at least an optical functional film, and an adhesive layer and the optical The functional film is laminated with a release film, and the optical film excluding the release film is formed with a slit, and the conveying device includes:
The conveying direction changing roller turns the release film toward the inside and erects the long optical film within a predetermined angle range;
The mask is arranged at a predetermined interval with respect to the conveying direction changing roller, sandwiching the long optical film, and has a curved surface along the conveying direction changing roller;
A mask drive unit that moves the mask toward the transport direction change roller side; and a mask drive control unit that sets the predetermined interval during the transport of the long optical film and makes the mask stand by, and When the transport of the optical film has stopped, the mask is moved to the side of the transport direction changing roller, and the mask is brought into contact with the portion of the long optical film that is placed on the transport direction changing roller. The conveying device according to claim 1, wherein the mask drive control section controls the mask drive section to control the mask drive section when the long optical film is laid on the conveying direction changing roller at the slit The cover moves toward the aforementioned transport direction changing roller side. The conveying device according to claim 1, wherein the conveying direction changing roller is a guide roller or a tension roller, and the guide roller is rotated relative to an axis orthogonal to the conveying direction except for The conveying device receives a fixed roller, and the tension roller is a roller that can move vertically with respect to the conveying device. A continuous manufacturing system for optical display panels, including:
The manufacturing device bonds the first optical film having at least the optical functional film to the first surface of the optical unit, and bonds the second optical film having at least the optical functional film to the second surface of the optical unit to manufacture the optical display Panel; and the conveying device according to any one of the foregoing request items 1 to 3. The continuous manufacturing system of the optical display panel according to claim 4, wherein the manufacturing device is to attach the first optical film in the form of a single sheet to the first surface of the optical unit to be transported, or to form a single sheet The first optical film is attached to the first surface of the optical unit. The monolithic first optical film is the first long optical film while pulling out the first long optical film from the first optical film roll while leaving the long first The film obtained after releasing the film and cutting the first long optical film,
And / or,
The second optical film in a single sheet is attached to the second optical unit to be transported in such a manner that the optical axis of the first optical film and the optical axis of the second optical film become a predetermined angle. Surface, or a single piece of second optical film is attached to the second of the optical unit in such a manner that the optical axis of the first optical film and the optical axis of the second optical film become a predetermined angle In the surface, the single-piece second optical film is a second long optical film pulled out from the second optical film roll while leaving a long second release film and cutting the second long optical film After the film obtained.