WO2015199152A1 - 貼合装置、貼合方法、光学表示デバイスの生産システムおよび光学表示デバイスの生産方法 - Google Patents

貼合装置、貼合方法、光学表示デバイスの生産システムおよび光学表示デバイスの生産方法 Download PDF

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Publication number
WO2015199152A1
WO2015199152A1 PCT/JP2015/068252 JP2015068252W WO2015199152A1 WO 2015199152 A1 WO2015199152 A1 WO 2015199152A1 JP 2015068252 W JP2015068252 W JP 2015068252W WO 2015199152 A1 WO2015199152 A1 WO 2015199152A1
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WO
WIPO (PCT)
Prior art keywords
bonding
sheet
optical display
sheet piece
display component
Prior art date
Application number
PCT/JP2015/068252
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
達也 土岡
大充 田中
Original Assignee
住友化学株式会社
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
Application filed by 住友化学株式会社 filed Critical 住友化学株式会社
Priority to CN201580034691.XA priority Critical patent/CN106471560B/zh
Priority to KR1020177000343A priority patent/KR102209637B1/ko
Publication of WO2015199152A1 publication Critical patent/WO2015199152A1/ja

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/18—Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements

Definitions

  • the present invention relates to a bonding apparatus, a bonding method, an optical display device production system, and an optical display device production method.
  • Patent Document 1 As an apparatus for bonding a sheet material to an object to be pasted, an apparatus described in Patent Document 1 is known.
  • the apparatus of Patent Document 1 cuts a long sheet material into a predetermined size and holds it on a head. Then, the head is moved to the stage on which the object to be pasted is placed, the head and the object to be pasted are positioned, and then the head is pressed onto the object to be pasted to transfer the sheet material to the object to be pasted.
  • the shape of the head is an arc shape so that bubbles are not generated when the sheet material is transferred to the object to be pasted.
  • the sheet material is held in the head by rotating the head while conveying the sheet, the sheet material is wrinkled when the sheet material is held in the head due to the influence of meandering when the sheet material is conveyed. Likely to happen. Accordingly, when the sheet material is transferred to the object to be pasted, bubbles are easily generated between the sheet material and the object to be pasted.
  • the objective of this invention is providing the bonding apparatus which can suppress generation
  • the bonding apparatus which concerns on 1 aspect of this invention is a bonding apparatus which bonds a sheet piece to an optical display component, Comprising: The unwinding part which unwinds an optical member sheet with a separator sheet from an original fabric roll, The said optical member A cut part that forms the sheet piece by cutting the sheet while leaving the separator sheet, a sheet stage that supports the sheet piece from the separator sheet side, and a bonding on which the optical display component is placed The sheet piece is peeled from the separator sheet by rolling along the curvature of the holding surface while pressing the curved holding surface against the sheet piece and the sheet piece stationary on the sheet stage. Bonding to hold the sheet piece held on the holding surface to the optical display component placed on the bonding stage Tsu including soil and, the.
  • the bonding apparatus which concerns on 1 aspect of this invention WHEREIN: After the said sheet piece peeled from the said separator sheet with the said bonding head, the winding part which winds up the said separator sheet used alone is included, The said winding part The first period immediately after the laminating head presses the holding surface against the sheet piece and starts rolling is rotated in the direction of unwinding the separator sheet, and after the first period has elapsed. In the second period until the rolling is completed, the separator sheet can be rotated in the winding direction.
  • a patch board is provided on the said bonding stage so that it may adjoin with the said optical display component, and the said holding surface is the upper surface of the said patch board. After being pressed, the sheet piece held on the holding surface can be bonded to the optical display component by continuously rolling the upper surface of the contact plate and the upper surface of the optical display component.
  • An optical display device production system is an optical display device production system in which an optical member is bonded to an optical display component, the sheet being the optical member on the optical display component
  • the bonding apparatus which includes the bonding apparatus which bonds a piece is the bonding apparatus which concerns on 1 aspect of this invention mentioned above.
  • An optical display device production system is an optical display device production system in which an optical member is bonded to an optical display component, and the optical display component is larger than the optical member.
  • a bonding apparatus for bonding a sheet piece, an image of the optical display component to which the sheet piece is bonded, a detection device for detecting a cut line of the sheet piece based on the imaging data, and the optical display A cutting device that cuts out the optical member from the sheet piece by cutting the sheet piece bonded to a part along the cut line, and the bonding device is an aspect of the present invention described above. It is the bonding apparatus which concerns on.
  • the pasting method concerning one mode of the present invention is a pasting method which pastes a sheet piece on an optical display component, and unwinds an optical member sheet with a separator sheet from an original fabric roll, and the optical member A cutting step for forming the sheet piece by cutting the sheet while leaving the separator sheet, a supporting step for supporting the sheet piece from the separator sheet side by a sheet stage, and a stage for bonding the optical display component And rolling the laminating head along the curve of the holding surface while pressing the curved holding surface of the laminating head against the sheet piece stationary on the sheet stage.
  • the sheet piece was peeled from the separator sheet and held on the holding surface, and held on the holding surface.
  • the serial sheet piece including a bonding step of bonding the placed on said optical display component on the bonding stage.
  • a winding step of winding the separator sheet alone by a winding unit In the winding step, during the first period immediately after the laminating head presses the holding surface against the sheet piece and starts rolling, the winding unit is rotated in a direction to unwind the separator sheet. After the first period has elapsed, the winding unit can be rotated in the direction of winding the separator sheet during the second period until the rolling is completed.
  • a patch plate is provided on the bonding stage so as to be adjacent to the optical display component, and in the bonding step, the holding surface of the bonding head is provided. After being pressed against the top surface of the backing plate, the bonding head continuously rolls on the top surface of the backing plate and the top surface of the optical display component, so that the sheet piece held on the holding surface is the optical It can be bonded to a display component.
  • the optical display device production method is an optical display device production method in which an optical member is bonded to an optical display component, and the optical display component is a sheet that is the optical member.
  • a bonding step of bonding pieces is performed, and the bonding step is performed using the bonding method according to one embodiment of the present invention described above.
  • the optical display device production method is an optical display device production method in which an optical member is bonded to an optical display component, and is larger than the optical member in the optical display component.
  • a cutting step of cutting the optical member from the sheet piece by cutting the sheet piece bonded to a part along the cut line, and the bonding step is an aspect of the present invention described above. It is performed using the pasting method concerning.
  • the “optical member” is based on the specifications of the optical display device.
  • An optical member having a set size means, for example, a size corresponding to the external dimension of the optical display component. Specifically, when the size is bonded to the optical display component, It means a size that does not cause a surplus part that causes a problem in use.
  • a display area for displaying an image is provided at the center of the optical display component, and an electrical component including a plurality of terminals to which a semiconductor chip, a flexible printed wiring, or the like is connected at the end of the optical display component A mounting portion is provided.
  • the “optical member” for example, an area that is not less than the size of the display area of the optical display component and not more than the size of the outer shape (contour shape in plan view) of the optical display component, In this case, an optical member having a size that avoids a functional part such as an electrical component mounting part is used.
  • the “sheet piece larger than the optical member” is a target size (a size set based on the specifications of the optical display device).
  • a sheet piece slightly larger than the optical member.
  • a portion larger than the optical member in the sheet piece is a cutting target as an excessive portion.
  • the bonding apparatus which can suppress generation
  • Drawing 1 is a schematic diagram of pasting device 100 of this embodiment.
  • the bonding apparatus 100 of this embodiment bonds the sheet piece F1X obtained by half-cutting the elongate optical member sheet
  • optical display component P for example, a panel-shaped optical display component such as a liquid crystal panel or an organic EL panel can be used.
  • optical member sheet FX for example, a polarizing film, a retardation film, a brightness enhancement film, or the like can be used. In the present embodiment, for example, the polarizing film shown in FIG. 4 is used as the optical member sheet FX.
  • the optical member sheet FX in FIG. 4 includes a film-shaped optical member main body F1a, an adhesive layer F2a provided on one surface (upper surface in FIG. 4) of the optical member main body F1a, and the optical member main body via the adhesive layer F2a.
  • the optical member main body F1a functions as a polarizing plate, for example, and is bonded over the display area of the optical display component P or the display area and its peripheral area.
  • the optical member body F1a is bonded to the optical display component P via the adhesive layer F2a in a state where the separator sheet F3a is separated while leaving the adhesive layer F2a on one surface thereof.
  • seat FX is called the bonding sheet
  • Sheet piece F1X is a sheet piece of bonding sheet F5 obtained by cutting long bonding sheet F5 into a predetermined size.
  • the separator sheet F3a protects the adhesive layer F2a and the optical member body F1a before being separated from the adhesive layer F2a.
  • the surface protective film F4a is bonded to the optical display component P together with the optical member body F1a.
  • the surface protective film F4a is disposed on the side opposite to the optical display component P with respect to the optical member body F1a to protect the optical member body F1a.
  • the optical member sheet FX may not include the surface protective film F4a, or the surface protective film F4a may be separated from the optical member main body F1a.
  • the optical member body F1a is bonded to the sheet-like polarizer F6, the first film F7 bonded to one surface of the polarizer F6 with an adhesive or the like, and the other surface of the polarizer F6 with an adhesive or the like. And a second film F8.
  • the first film F7 and the second film F8 are, for example, protective films that protect the polarizer F6.
  • the optical member body F1a may have a single-layer structure composed of a single optical layer, or may have a stacked structure in which a plurality of optical layers are stacked on each other.
  • the optical layer may be a retardation film, a brightness enhancement film, or the like.
  • At least one of the first film F7 and the second film F8 may be subjected to a surface treatment that provides an effect such as a hard coat treatment for protecting the outermost surface of the liquid crystal display element or an antiglare treatment including an antiglare treatment.
  • the optical member body F1a may not include at least one of the first film F7 and the second film F8.
  • the separator sheet F3a may be bonded to one surface of the polarizer F6 via the adhesive layer F2a.
  • the bonding apparatus 100 of this embodiment contains the sheet
  • the sheet conveying device 110 includes, for example, an unwinding unit 111, a winding unit 112, a nip roll unit 113, a sheet stage 114, and a cutting unit 115.
  • the unwinding unit 111 holds the original fabric roll RX around which the long optical member sheet FX is wound, and feeds the optical member sheet FX in the longitudinal direction thereof.
  • the optical member sheet FX has a width equivalent to the length of the first side (for example, the short side) of the display area of the optical display component P, for example, in the horizontal direction (sheet width direction) orthogonal to the conveyance direction. .
  • the sheet conveying direction the direction in which the optical member sheet FX (separator sheet F3a) is unwound from the unwinding unit 111 and conveyed
  • the upstream side in the sheet conveying direction is referred to as the sheet conveying upstream side
  • the downstream side in the sheet conveying direction Is referred to as the sheet conveyance downstream side.
  • the cut unit 115 cuts (half-cuts) the optical member sheet FX unwound from the raw roll RX in the thickness direction while leaving the separator sheet F3a.
  • the cut portion 115 is, for example, in the length direction in which the optical member sheet FX is orthogonal to the sheet width direction, and has a length equivalent to the length of the second side (for example, the long side) of the display area of the optical display component P. Each time the sheet is fed, a part in the thickness direction of the optical member sheet FX is cut across the entire width in the sheet width direction.
  • the cut part 115 adjusts the advancing / retreating position of the cutting blade so that the separator sheet F3a is not broken by the tension acting during the conveyance of the optical member sheet FX (so that a predetermined thickness remains on the separator sheet F3a), and the adhesive layer Half-cut to the vicinity of the interface between F2a and separator sheet F3a.
  • a laser cutting device can be used as the cutting unit 115 instead of the cutting blade.
  • the optical member sheet FX after the half cut has a cut line extending over the entire width in the sheet width direction of the optical member sheet FX by cutting the optical member main body F1a, the adhesive layer F2a and the surface protection film F4a in the thickness direction. Is formed.
  • the optical member sheet F is divided into sections having a length corresponding to the length of the second side of the display region in the longitudinal direction by a cutting line. Each of these sections becomes one sheet piece F1X in the bonding sheet F5.
  • the cutting angle of the optical member sheet FX with respect to the sheet conveyance direction is controlled by the control device 190.
  • imaging devices that capture the image of the edge of the optical member sheet FX are arranged at a plurality of locations in the sheet conveyance direction, and the control device 190 has a plurality of locations based on the images of the edges at the plurality of locations captured by these imaging devices. Detect edge positions. Then, based on the detected relative positional relationship between the plurality of edges, the control device 190 calculates an inclination angle of the edge with respect to the sheet conveyance direction at the cut position of the optical member sheet FX. And the cut part 115 cut
  • the sheet stage 114 supports the lower surface (the surface on the separator sheet F3a side shown in FIG. 4) of the optical member sheet FX unwound from the raw roll RX.
  • the sheet stage 114 is provided so as to extend over both a cutting position where the optical member sheet FX is half-cut by the cutting unit 115 and a peeling position where the sheet piece F1X is peeled from the separator sheet F3a.
  • the nip roll unit 113 includes a first nip roll 113a and a second nip roll 113b that are arranged in parallel with each other in the rotation axis direction.
  • the first nip roll 113a and the second nip roll 113b rotate in synchronization with each other, whereby the separator sheet F3a is transported from the upstream side of the sheet transport to the downstream side of the sheet transport (in the direction of winding around the winding unit 112), and the downstream side of the sheet transport To the upstream side of the sheet conveyance (in the unwinding direction from the winding unit 112).
  • the winding part 112 winds up the separator sheet F3a which became independent after the sheet piece F1X was peeled from the separator sheet F3a by the bonding head 120.
  • the winding unit 112 winds and unwinds the separator sheet F3a by rotating in synchronization with the first nip roll 113a and the second nip roll 113b.
  • the head unit 150 includes, for example, a bonding head 120, a head driving device 130, and a head lifting device 140.
  • the bonding head 120 includes, for example, a head main body 121 and an adhesive sheet 122.
  • the head main body 121 has a curved surface curved along the traveling direction of the optical member sheet FX so that the upper surface is a flat surface and the lower surface is convex downward.
  • An adhesive sheet 122 is fixed to the lower surface of the head main body 121.
  • an adhesive silicone rubber is used as the adhesive sheet 122.
  • the surface of the pressure-sensitive adhesive sheet 122 is a curved holding surface 122a for attaching and holding the sheet piece F1X.
  • the holding surface 122a has, for example, a weaker bonding force than the bonding surface (adhesive layer F2a) of the sheet piece F1X, and the surface protective film F4a of the sheet piece F1X can be repeatedly bonded and peeled off.
  • the laminating head 120 rolls the sheet piece F1X from the separator sheet F3a by rolling along the curve of the holding surface 122a while pressing the curved holding surface 122a against the sheet piece F1X supported on the sheet stage 114. It peels and it hold
  • the bonding head 120 rolls along the curvature of the holding surface 122a while pressing the sheet piece F1X held on the holding surface 122a against the optical display component P placed on the bonding stage 171. Is bonded to the optical display component P.
  • the head driving device 130 includes, for example, a base plate 135, a rotation driving unit 136, and a rod unit 137.
  • the bonding head 120 is connected to the rotation support shaft 136a of the rotation drive unit 136 via a rod part 137 connected to the center of the upper surface of the head main body 121.
  • the rotation support shaft 136a is fixed to the base plate 135.
  • the bonding head 120 is suspended from the lower surface of the base plate 135 via the rod portion 137 and the rotation support shaft 136a so as to be freely rotatable.
  • the holding surface 122a is, for example, an arcuate curved surface with the rotation support shaft 136a as the center.
  • the bonding head 120 is rotated by the rotation drive unit 136 around the rotation support shaft 136a within a predetermined angle range. Thereby, sticking of the sheet piece F1X from the separator sheet F3a to the holding surface 122a and bonding (transfer) of the sheet piece F1X from the holding surface 122a to the optical display component P are performed.
  • the head lifting device 140 includes a lifting drive unit 141 and a rod unit 142.
  • a first end portion of the rod portion 142 is fixed to the upper surface of the base plate 135, and a second end portion of the rod portion 142 is connected to the elevating drive portion 141.
  • the elevating drive unit 141 includes, for example, a servo motor, and the rod unit 142 moves in the vertical direction by the driving force of the servo motor. Thereby, the bonding head 120 moves in the vertical direction.
  • the head moving device 160 includes a guide rail 161 and a slider 162. An upper end portion of the lifting drive unit 141 is fixed to the slider 162. As a result, the head unit 150 is suspended vertically from the slider 162.
  • the guide rail 161 is provided so as to straddle between the sheet conveying apparatus 110 and the bonding stage 171.
  • the slider 162 reciprocates along the guide rail 161. Thereby, the bonding head 120 moves between the peeling position which peels the sheet piece F1X from the separator sheet F3a, and the bonding position which bonds the sheet piece F1X to the optical display component P.
  • the head driving device 130, the head lifting device 140, and the head moving device 160 constitute a head driving mechanism that rotationally drives, moves up and down, and moves horizontally.
  • the bonding head 120 is driven by the head driving device 130 and the head moving device 160 to rotate and move horizontally, so that the optical display placed on the sheet piece F1X supported by the sheet stage 114 and on the bonding stage 171. Roll on part P. Thereby, sticking of the sheet piece F1X from the separator sheet F3a to the holding surface 122a and bonding (transfer) of the sheet piece F1X from the holding surface 122a to the optical display component P are performed.
  • the bonding head 120 is horizontally moved in the first movement direction (for example, right direction) by the head movement device 160 while being rotated in the first rotation direction (for example, clockwise direction) by the head driving device 130.
  • the holding surface 122a can roll in a first direction from the first end (for example, the left end) toward the second end (for example, the right end).
  • the bonding head 120 is rotated in the second rotation direction (for example, counterclockwise direction) by the head driving device 130 and horizontally in the second movement direction (for example, left direction) by the head movement device 160. By moving, it can roll in a second direction from the second end (for example, the right end) of the holding surface 122a toward the first end (for example, the left end).
  • the stage unit 170 includes a bonding stage 171, a stage driving device 172, and a contact plate 173.
  • the bonding stage 171 has a placement surface 171a on which the optical display component P is placed.
  • the bonding stage 171 holds the optical display component P on the mounting surface 171a by sucking the lower surface of the optical display component P (the surface opposite to the surface to be bonded to the sheet piece F1X).
  • the contact plate 173 is a plate-shaped or bar-shaped member disposed along one side of the optical display component P.
  • the contact plate 173 is fixed on the placement surface 171a.
  • the height of the contact plate 173 substantially matches the height of the optical display component P.
  • the contact plate 173 is arranged on the upstream side in the rolling direction AFD from the position where the optical display component P is placed.
  • the optical display component P is disposed adjacent to the contact plate 173.
  • the optical display component P is fixed on the mounting surface 171a in a state where the end portion is in contact with the side surface of the contact plate 173. Thereby, a plane in which the upper surface of the optical display component P and the upper surface of the contact plate 173 are continuous is formed.
  • the backing plate 173 can be fixedly disposed at at least two places (first position and second position) on the bonding stage 171.
  • the first position is a position on the bonding stage 171 corresponding to the case where the rolling direction AFD is the first direction (for example, the position on the left side of the optical display component P), and the second position is It is a position on the bonding stage 171 corresponding to the case where the rolling direction AFD is set to the second direction (for example, the position on the right side of the optical display component P).
  • the bonding head 120 After the holding surface 122 a located on the upstream side of the bonding direction ADF from the sheet F ⁇ b> 1 ⁇ / b> X is pressed against the upper surface of the backing plate 173, the bonding head 120 is placed on the upper surface of the backing plate 173 and the optical display component P The sheet piece F1X held on the holding surface 122a is bonded to one surface of the optical display component P by continuously rolling the upper surface of the optical display component P. Before the sheet piece F1X and the optical display component P are brought into contact with each other, the laminating head 120 is allowed to run outside the optical display component P so that the bonding conditions such as the load and the speed are made uniform throughout the sheet piece F1X. Can do.
  • the stage driving device 172 moves the bonding stage 171 in a direction orthogonal to the rolling direction AFD of the bonding head 120 and the rolling direction AFD of the bonding head 120. Moreover, the stage drive device 172 rotates the bonding stage 171 in a horizontal plane. The stage drive device 172 adjusts the relative bonding position between the optical display component P held by the bonding stage 171 and the sheet piece F1X held by the bonding head 120 by driving the bonding stage 171. . Thereby, alignment with the optical display component P and the sheet piece F1X is performed.
  • the control device 190 includes a computer system.
  • the computer system includes an arithmetic processing unit such as a CPU and a storage unit such as a memory and a hard disk.
  • the control device 190 includes an interface capable of executing communication with an external device of the computer system, and comprehensively controls operations of various devices constituting the bonding device 100 and various devices outside the bonding device 100.
  • the bonding head 120 is disposed above the sheet stage 114 while being inclined with respect to the sheet stage 114.
  • the conveyance of the sheet piece F1X is stopped, and the sheet piece F1X is stopped on the sheet stage 114.
  • the sheet stage 114 supports the sheet piece F1X from the separator sheet F3a side.
  • the bonding head 120 and the sheet piece F1X on the sheet stage 114 are positioned.
  • the bonding head 120 is inclined so that the upstream side in the rolling direction is positioned below the downstream side in the rolling direction.
  • the end on the downstream side of the sheet conveyance is inclined so as to be positioned below the end on the upstream side of the sheet conveyance.
  • the bonding head 120 will fall to the height which contacts the sheet piece F1X by the head lifting / lowering device 140. Thereby, the edge part of the sheet conveyance downstream of the bonding head 120 is pressed on the edge part of the sheet piece F1X of the sheet conveyance downstream.
  • the rotation driving unit 136 and the head moving device 160 are driven in synchronization to move the bonding head 120 from the sheet conveying downstream side toward the sheet conveying upstream side. Roll (rotate and move horizontally). Accordingly, the sheet piece F1X is gradually attached to the holding surface 122a from the sheet conveying downstream side to the sheet conveying upstream side.
  • the winding unit 112 and the nip roll unit 113 are driven to drive the rotation driving unit 136 and the head moving device 160.
  • the separator sheet F3a rotates in the unwinding direction (reverse direction). Thereby, the separator sheet F3a is loosened on the upstream side of the nip roll portion 113, and the sheet piece F1X and the separator sheet F3a on the downstream side of the sheet conveyance from the portion on which the load is applied by the bonding head 120 follow the curvature of the holding surface 122a. And float above the sheet stage 114.
  • the separator sheet F3a Since the separator sheet F3a is in a slack state, a force for peeling the sheet piece F1X from the holding surface 122a is unlikely to occur at the end of the sheet piece F1X on the downstream side of the sheet conveyance. Therefore, the adhesive force between the sheet piece F1X and the holding surface 122a is increased, and the sheet piece F1X is reliably attached to the holding surface 122a. Moreover, by loosening the separator sheet F3a, when the sheet piece F1X is peeled from the separator sheet F3a, momentary large peeling force is suppressed from being applied to the separator sheet F3a. Therefore, the separator sheet F3a is suppressed from breaking.
  • the winding unit 112 and the nip roll unit 113 wind up the separator sheet F3a during the second period until the rolling of the bonding head 120 ends. Rotate in the direction (forward direction). Thereby, the slack of the separator sheet F3a is eliminated, and the separation of the sheet piece F1X from the separator sheet F3a is promoted.
  • the timing at which the rotation direction of the winding unit 112 and the nip roll unit 113 is switched from the reverse direction to the forward direction is, for example, 5% to 70%, preferably 10% to 50% when the sheet piece F1X is attached to the holding surface 122a. It is assumed that the timing is completed.
  • the bonding head 120 While the separator sheet F3a is being unwound and wound by the winding unit 112 and the nip roll unit 113, the bonding head 120 always continues to roll in the same direction by the rotation driving unit 136 and the head moving device 160. The bonding head 120 rolls along the curve of the holding surface 122a while pressing the holding surface 122a against the sheet piece F1X, thereby peeling the sheet piece F1X from the separator sheet F3a and holding it on the holding surface 122a.
  • the surface protection film F4a of the sheet piece F1X is sequentially bonded to the holding surface 122a of the bonding head 120.
  • the sheet piece F1X adhered to the holding surface 122a is peeled from the separator sheet F3a, and the adhesive layer F2a (bonding surface with the optical display component P) is exposed.
  • the bonding head 120 holding the sheet piece F1X is transferred by the head moving device 160 to the bonding stage 171 on which the optical display component P is placed.
  • FIGS. 2A to 2C show the process of holding the non-defective sheet piece F1X having no defects in the sheet surface by the bonding head 120, but the defective sheet piece F1X having defects in the sheet surface is bonded to the bonding head.
  • the same processing is performed when the data is held at 120.
  • the bonding head 120 holding the defective sheet piece F ⁇ b> 1 ⁇ / b> X is transferred by the head driving device 160 to an unillustrated discarding position (discard position) arranged at a position different from the bonding stage 171. Then, the defective sheet piece F1X is overlaid on a waste material sheet or the like provided at the disposal position.
  • the defect of the sheet piece F1X is, for example, a portion where a foreign substance consisting of at least one of solid, liquid, or gas is present inside the sheet piece F1X, a portion where unevenness or scratches are present on the surface of the sheet piece F1X, a sheet This is a portion that becomes a bright spot due to distortion of the piece F1X, material bias, or the like.
  • the bonding head 120 holding the sheet piece F1X is raised to a height that does not interfere with the sheet conveying device 110 by the head lifting device 140 with the adhesive layer F2a facing downward. Then, the bonding head 120 is transferred by the head moving device 160 to a position above the bonding stage 171 on which the optical display component P is placed.
  • the bonding head 120 moves from a position above the sheet stage 114 to a position above the bonding stage 171, for example, two corners of the sheet piece F1X held on the holding surface 122a are first imaged. Imaged by device 181.
  • the image of the sheet piece F1X captured by the first imaging device 181 is subjected to image analysis by a first image processing device (not shown), and the positions of the two corners of the sheet piece F1X are detected.
  • Information regarding the position of the corner of the sheet piece F1X detected by the first image processing device is sent to the control device 190.
  • the control device 190 confirms the arrangement position of the sheet piece F1X with respect to the bonding head 120 based on the information detected by the first image processing device.
  • the first imaging device 181 images two corners on the rear end side of the sheet piece F1X, but the number and position of the sheet pieces F1X imaged by the first imaging device 181 are not limited thereto.
  • the number of sheet pieces F1X imaged by the first imaging device 181 can be freely selected in one to four ranges.
  • the positions of the corners to be set can also be set freely.
  • the optical display component P held on the bonding stage 171 is imaged by, for example, the second imaging device 182.
  • the second imaging device 182 images using an alignment mark or a black matrix provided on the optical display component P as an alignment reference.
  • the image of the optical display component P imaged by the second imaging device 182 is image-analyzed by a second image processing device (not shown), and the position of the alignment reference is detected.
  • Information regarding the position of the alignment reference of the optical display component P detected by the second image processing device is sent to the control device 190.
  • the control device 190 confirms the arrangement position of the optical display component P with respect to the bonding stage 171 based on the information detected by the second image processing device.
  • the control device 190 controls the stage driving device 172 based on the arrangement position of the sheet piece F1X with respect to the bonding head 120 and the arrangement position of the optical display component P with respect to the bonding stage 171.
  • the control device 190 uses the stage driving device 172 to horizontally move the bonding stage 171 in the horizontal plane or to rotationally drive the bonding stage 171 in the horizontal plane. Thereby, the relative bonding position of the optical display component P hold
  • the bonding head 120 when the relative bonding position between the optical display component P and the sheet piece F1X is adjusted, the bonding head 120 is lowered to a height at which the optical display component P comes into contact with the head lifting device 140.
  • the bonding head 120 is inclined so that the end on the upstream side in the rolling direction is positioned below the end on the downstream side in the rolling direction.
  • the end of the bonding head 120 located on the upstream side in the rolling direction from the sheet piece F1X is the upper surface of the contact plate 173 located on the upstream side in the rolling direction of the optical display component P. Pressed against.
  • the rotation driving unit 136 and the head moving device 160 are driven in synchronization, so that the bonding head 120 is directed from the upper surface of the contact plate 173 toward the upper surface of the optical display component P. Roll. As the bonding head 120 rolls, the sheet piece F1X held on the holding surface 122a is gradually attached to the upper surface of the optical display component P.
  • the bonding head 120 has, for example, a weaker adhesive force than the bonding surface of the sheet piece F1X (adhesive layer F2a shown in FIG. 4), and the surface protective film F4a of the sheet piece F1X can be repeatedly bonded and peeled off. Has been. Therefore, the sheet piece F1X whose pressure-sensitive adhesive layer F2a side is pressed by the optical display component P is peeled from the holding surface 122a and bonded to the upper surface of the optical display component P. Thus, the bonding process of the sheet piece F1X to the optical display component P is completed.
  • 3A, 3B, and 3C show the process of transferring a non-defective sheet piece F1X having no defects in the sheet surface from the bonding head 120 to the optical display component P.
  • a similar process is performed when the non-defective sheet piece F1X is bonded to a waste material sheet or the like provided at the disposal position.
  • the curved holding surface 122a of the bonding head 120 is pressed along the curve of the holding surface 122a against the sheet piece F1X stationary on the sheet stage 114.
  • the sheet piece F1X is peeled from the separator sheet F3a and held on the holding surface 122a. Therefore, it is suppressed that wrinkles generate
  • FIG. 5 is a schematic view of an optical display device production system 1000 according to the first embodiment of the present invention.
  • the optical display device is configured by bonding an optical member to the optical display component P.
  • the size of the optical member is set based on the specifications of the optical display device.
  • the production system 1000 includes the above-described bonding device 100 as a bonding device that bonds a sheet piece that is the optical member to the optical display component P.
  • the production system 1000 of the present embodiment includes a cleaning device 1001, a first bonding device 1002, a second bonding device 1003, a peeling device 1004, a third bonding device 1005, and an inspection device 1006. .
  • the 1st bonding apparatus 1002, the 2nd bonding apparatus 1003, and the 3rd bonding apparatus 1005 have the structure of the bonding apparatus 100 mentioned above.
  • the cleaning device 1001, the first bonding device 1002, the second bonding device 1003, the peeling device 1004, the third bonding device 1005, and the inspection device 1006 are a series of conveyance lines that convey the optical display component P. Placed in.
  • the cleaning apparatus 1001 cleans the optical display component P carried in from a loader (not shown), and removes foreign matters attached to the optical display component P.
  • the cleaning apparatus 1001 is, for example, a first surface (for example, a surface on the side where the image displayed in the display area is viewed) and a second surface (for example, the side where the image displayed in the display area is viewed).
  • the surface of the optical display component P can be brushed and washed with water on the opposite surface), and then the first surface and the second surface of the optical display component P can be drained.
  • the cleaning device 1001 may be a dry type that performs static electricity removal and dust collection on the front and back surfaces of the optical display component P.
  • the optical display component P is, for example, a liquid crystal panel.
  • the first bonding device 1002 bonds the first sheet piece to the first surface of the optical display component P. Similarly to the bonding apparatus 100 described above, the first bonding apparatus 1002 rolls the bonding head along the curve of the holding surface while pressing the curved holding surface of the bonding head against the stationary first sheet piece. By moving, the first sheet piece is separated from the separator sheet and held on the holding surface. For this reason, when the first sheet piece is bonded to the optical display component P, the generation of bubbles between the first sheet piece and the optical display component P is suppressed.
  • the first sheet piece is, for example, a sheet-like polarizing plate cut to a size corresponding to the outer dimension of the optical display component P.
  • size corresponding to the external dimension of the optical display component P means a size that does not cause a surplus part that causes a problem in actual use when bonded to the optical display component P.
  • the first sheet piece has the same configuration as the sheet piece F1X shown in FIG.
  • a display area for displaying an image is provided in the center of the optical display component P, and a plurality of terminals to which a semiconductor chip, a flexible printed wiring, and the like are connected are provided at the end of the optical display component P.
  • An electrical component mounting portion is provided.
  • the first sheet piece is, for example, an area that is not less than the size of the display area of the optical display component P and not more than the size of the outer shape (contour shape in plan view) of the optical display component P and is optical A sheet piece having a size of a region that avoids a functional part such as an electric component mounting portion in the display component P is used.
  • the second bonding apparatus 1003 bonds the second sheet piece to the second surface of the optical display component P. Similarly to the bonding apparatus 100 described above, the second bonding apparatus 1003 pushes the bonding head along the curve of the holding surface while pressing the curved holding surface of the bonding head against the stationary second sheet piece. By rolling, the second sheet piece is separated from the separator sheet and held on the holding surface. For this reason, when the second sheet piece is bonded to the optical display component P, the generation of bubbles between the second sheet piece and the optical display component P is suppressed.
  • the second sheet piece is, for example, a sheet-like polarizing plate cut to a size corresponding to the outer dimension of the optical display component P.
  • the second sheet piece has the same configuration as the sheet piece F1X shown in FIG.
  • the transmission axis of the second sheet piece bonded to the second surface of the optical display component P and the transmission axis of the first sheet piece bonded to the first surface of the optical display component P are orthogonal to each other.
  • the inversion apparatus (illustration omitted) which reverses the front and back of the optical display component P is provided, for example.
  • the optical display component P in which the first sheet piece is bonded to the first surface is supplied to the second bonding apparatus 1002 with the front and back sides reversed.
  • the peeling apparatus 1004 peels the surface protection film from the second sheet piece bonded to the second surface of the optical display component P.
  • the 3rd bonding apparatus 1005 bonds a 3rd sheet piece to the surface of the 2nd sheet piece from which the surface protection film was peeled by the peeling apparatus 1004.
  • the third bonding apparatus 1005 rotates the bonding head along the curvature of the holding surface while pressing the curved holding surface of the bonding head against the stationary third sheet piece. By moving, the third sheet piece is separated from the separator sheet and held on the holding surface. For this reason, when the third sheet piece is bonded to the optical display component P, the generation of bubbles between the third sheet piece and the optical display component P is suppressed.
  • the third sheet piece is, for example, a sheet-like brightness enhancement film cut to a size corresponding to the outer dimension of the optical display component P.
  • the brightness enhancement film is a reflective polarizing plate that reflects linearly polarized light orthogonal to the transmission axis.
  • the third sheet piece has the same configuration as the sheet piece F1X shown in FIG.
  • the transmission axis of the second sheet piece bonded to the second surface of the optical display component P and the transmission axis of the third sheet piece bonded to the second sheet piece are parallel to each other.
  • the inspection device 1006 inspects the optical display component P to determine whether or not the positions of the first sheet piece, the second sheet piece, and the third sheet piece are appropriate (the positional deviation is within the tolerance range). .
  • the optical display component determined to have an inappropriate position of the first sheet piece, the second sheet piece, or the third sheet piece with respect to the optical display component P is discharged out of the system by a not-shown dispensing means.
  • the optical display component with the first sheet piece, second sheet piece, and third sheet piece attached is subjected to incidental measures such as defect inspection (foreign matter inspection, etc.) and mounting of electrical components as necessary. Are shipped as an optical display device DP.
  • a bonding apparatus having the same configuration as the bonding apparatus 100 described above is used as the first bonding apparatus 1002, the second bonding apparatus 1003, and the third bonding apparatus 1005. Yes. Therefore, it is possible to provide an optical display device DP in which the generation of bubbles is suppressed.
  • FIG. 6 is a diagram showing a cutting process of the sheet piece FXm in the production system of the present embodiment.
  • the difference from the first embodiment is that the sheet piece FXm bonded to the optical display component P by the bonding head is set based on the target size (specification of the optical display device).
  • the size of the sheet piece FXm is bonded to the optical display component P, and then the excess portion of the sheet piece FXm is cut by the cutting device 184. Therefore, in the following description, it demonstrates centering around the cutting process of the sheet piece FXm.
  • the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
  • the cross-sectional structure of the sheet piece FXm is the same as the sheet piece F1X shown in FIG.
  • the sheet piece FXm is obtained by cutting the long optical member sheet FX shown in FIG. 1 into a predetermined size.
  • the sheet piece FXm is slightly larger than the size corresponding to the outer dimension of the optical display component P (the size of the first region FB).
  • size corresponding to the external dimension of the optical display component P means a size that does not cause a surplus part that causes a problem in actual use when bonded to the optical display component P. Since the sheet piece FXm is larger than the size corresponding to the external dimension of the optical display component P, the surplus portion (second region FS) that causes a problem in actual use is cut by the cutting device 184.
  • the laminating apparatus for laminating the sheet piece FXm to the optical display component P is the same as the laminating apparatus 100 described in the first embodiment.
  • the detection apparatus 189 and the cutting device 184 are provided on the conveyance line on the downstream side of the bonding apparatus.
  • the detection device 189 includes an imaging device 183 that images the optical display component P on which the sheet piece FXm is bonded.
  • the detection device 189 detects the cut line WCL of the sheet piece FXm (position where the sheet piece FXm should be cut) based on the imaging data of the imaging device 183.
  • the imaging device 183 images the optical display component P through the sheet piece FXm from above the optical display component P placed on the cutting stage 185, for example.
  • the imaging device 183 captures images of four corners of a substrate (for example, a color filter substrate) of the optical display component P to which the sheet piece FXm is bonded.
  • the detection device 189 performs image processing on the imaging data to detect the position of the outer peripheral edge of the substrate, and detects the position of the outer peripheral edge as the cut line WCL of the sheet piece FXm.
  • Information on the cut line WCL detected by the detection device 189 is sent to the control device 190.
  • the control device 190 controls the cutting device 184 based on the information on the cut line WCL sent from the detection device 189, and cuts the sheet piece FXm along the cut line WCL.
  • the first area FB facing the display area of the sheet piece FXm is separated from the second area FS outside the first area FB, and the optical member FO having a target size is cut out from the sheet piece FXm. .
  • the cut line WCL of the sheet piece FXm is detected for each optical display component P conveyed on the conveyance line. Therefore, even if there is a size variation for each optical display component P, the optical member FO having a size corresponding to the outer dimension of the optical display component P can be reliably cut out from the sheet piece FXm.
  • the optical member FO having a desired size is bonded to a desired position of the optical display component P by adopting a window cut method.
  • the direction of the optical axis of the sheet piece FXm may deviate from the originally designed direction due to manufacturing errors.
  • the direction of the optical axis of the sheet piece FXm (optical member sheet FX) is measured in advance, and the relative bonding position between the sheet piece FXm and the optical display component P can be adjusted based on the measurement result.
  • the size of the sheet piece FXm matches the size of the target optical member FO, such adjustment cannot be performed.
  • the window cut method the sheet piece FXm larger than the optical member FO is bonded to the optical display component P, and then the excess portion of the sheet piece FXm is cut, and thus such adjustment is possible.
  • the bonding position (relative bonding position) of the sheet piece FXm with respect to the optical display component P can be determined as follows.
  • a plurality of inspection points CP are set in the width direction of the optical member sheet FX, and the direction of the optical axis of the optical member sheet FX is detected at each inspection point CP.
  • the timing for detecting the optical axis may be at the time of manufacturing the original fabric roll RX (see FIG. 1), or may be until the optical member sheet FX is unwound from the original fabric roll RX and half-cut.
  • Data in the optical axis direction of the optical member sheet FX is stored in a storage device (not shown) in association with the position in the longitudinal direction and the position in the width direction of the optical member sheet FX.
  • the control device 190 acquires the optical axis data (inspection data of the in-plane distribution of the optical axis) of each inspection point CP from the storage device, and the optical member sheet FX (cut line CL) of the portion from which the sheet piece FXm is cut out.
  • the direction of the average optical axis of the area defined by (1) is detected.
  • the shift angle is calculated, for example, with the counterclockwise direction being positive with respect to the edge line EL of the sheet piece FXm and the clockwise direction being negative.
  • seat FX detected by said method may make a desired angle with respect to one side of the display area P4 of the optical display component P.
  • the bonding position (relative bonding position) of the piece FXm is determined. For example, when the direction of the optical axis of the optical member is set to 90 ° with respect to one side of the display region P4 according to the design specifications, the average optical axis direction of the optical member sheet FX is the display region.
  • the sheet piece FXm is bonded to the optical display component P so as to form 90 ° with respect to one side of P4.
  • the detection device 189 shown in FIG. 6A detects the cut line WCL of the sheet piece FXm
  • the cutting device 184 shown in FIG. 6B detects the sheet piece FXm as the cut line WCL. Is cut along.
  • the optical member FO whose direction of the optical axis is precisely controlled is arranged at a desired size and a desired position. Therefore, it is possible to provide a narrow frame optical display device DP having excellent display quality.
  • FIG. 8 is a schematic diagram of an optical display device production system 2000 according to the second embodiment of the present invention.
  • the production system 2000 is a production system that employs a window cut method.
  • the production system 2000 includes the bonding apparatus 100 described in the first embodiment as a bonding apparatus that bonds a sheet piece larger than the optical member to the optical display component P.
  • the production system 2000 of the present embodiment includes a cleaning device 2001, a first bonding device 2002, a first cutting device 2003, a second bonding device 2004, a second cutting device 2005, a peeling device 2006, and a first device.
  • a three-bonding device 2007, a third cutting device 2008, and an inspection device 2009 are included.
  • the cutting device 2008 and the inspection device 2009 are arranged on a series of transport lines that transport the optical display component P.
  • the cleaning apparatus 2001, the first bonding apparatus 2002, the second bonding apparatus 2004, the peeling apparatus 2006, the third bonding apparatus 2007, and the inspection apparatus 2009 are the cleaning apparatus 1001 and the first bonding apparatus of the first embodiment.
  • inspection apparatus 1006 have the respectively same structure.
  • the 2nd bonding apparatus 2004, and the 3rd bonding apparatus 2007, a slightly larger sheet piece than the optical member of the objective magnitude
  • the first cutting device 2003, the second cutting device 2005, and the third cutting device 2008 have the same configuration as the cutting device 184 and the detection device 189 described above. That is, in the first cutting device 2003, the second cutting device 2005, and the third cutting device 2008, the imaging device picks up an image of the optical display component P on which the sheet piece FXm larger than the optical member having the target size is bonded. Then, a window cut method is employed in which an excess portion of the sheet piece is cut based on the imaging data. Therefore, it is possible to provide a narrow frame optical display device DP having excellent display quality.
  • the present invention is not limited to such examples.
  • Various shapes, combinations, and the like of the constituent members shown in the above-described examples are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.
  • the bonding head 120 may have a curved holding surface other than an arc, or may have a cylindrical holding surface.
  • the bonding apparatus capable of suppressing the generation of bubbles when the sheet piece is transferred, A bonding method, an optical display device production system, and an optical display device production method can be provided.

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PCT/JP2015/068252 2014-06-27 2015-06-24 貼合装置、貼合方法、光学表示デバイスの生産システムおよび光学表示デバイスの生産方法 WO2015199152A1 (ja)

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