KR20170041216A - Bonding device, system for producing optical display device, bonding method, and method for producing optical display device - Google Patents

Abstract

The joining apparatus 1 of the present invention is characterized in that the separator sheet F3a wound on the separator roll R2 is released in a predetermined period immediately after the holding operation of the sheet piece F11 is started to separate the sheet F3a from the separator sheet F3a, A releasing operation for loosening the separator sheet F3a is performed so as not to peel the sheet F11.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bonding apparatus, a production system of an optical display device, a bonding method, and a production method of an optical display device. BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a joining apparatus, a production system of an optical display device, a joining method, and a production method of the optical display device.

This application claims priority based on Japanese Patent Application No. 2014-160753 filed on August 6, 2014, the contents of which are incorporated herein by reference.

Conventionally, in a production system of an optical display device such as a liquid crystal display, a bonding head having a curved retention surface has been used.

That is, when a sheet piece such as a polarizing plate is fed in a state in which it is stuck on a base paper (hereinafter referred to as "separator sheet") having a release layer formed on its surface, the bonding head has a curved holding surface And is rotated to follow the surface of the sheet member. By this process, the sheet piece can be peeled off from the separator sheet and can be stuck to the holding surface.

Then, the joining head rotates while keeping the sheet piece on the holding surface, and then the curved holding surface is moved along the surface of the optical display component such as the liquid crystal panel. By this series of steps, the sheet piece held on the curved holding surface can be bonded to the optical display part (see, for example, Patent Document 1).

Patent Document 1: Japanese Patent No. 4482757

Incidentally, in a production system using a bonding head having a curved shape holding surface, a portion of the sheet piece initially attached to the bonding head is not brought into close contact with the bonding head. In view of this, bubbles and wrinkles are generated at the time of joining the sheet pieces to the optical display part, and the accuracy of the above-described joining is lowered, resulting in defective joining such as separation of the sheet pieces from the joining head.

On the other hand, in order to solve this problem, when the adhesive force of the bonding head is made strong, there arises a problem that only the thin film layer adhered to the bonding head is peeled off when the sheet piece is constituted by a multilayer thin film. Further, there is also a problem that after the sheet pieces are bonded, the optical display parts are lifted and damaged by the adhesive force of the bonding head.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a joining apparatus, a joining method, a production system of an optical display device, and a production method of an optical display device which can suppress junction failure.

A joining apparatus according to a first aspect of the present invention is a joining apparatus for joining a sheet piece to an optical display component, comprising: a take-up portion for taking out an optical member sheet from a disk roll together with a separator sheet; A sheet stage for supporting the separator sheet to which the sheet piece is pasted, a bonding stage for holding the optical display component, and a curved holding member for holding the sheet piece, A holding operation of holding the sheet piece on the holding surface by rolling while contacting the holding surface with the sheet piece supported by the sheet stage from the side of the separator sheet by the sheet stage, The sheet piece is brought into contact with the optical display component held on the bonding stage A separating operation of separating the separator sheet from the separator roll by a predetermined amount after the separating operation of the sheet member is started; The separator sheet is wound around the separator roll to release the separator sheet so that the separator sheet is loosened so that the sheet sheet is not peeled off from the separator sheet.

In the joining apparatus according to the first aspect of the present invention, the winding mechanism may include: a winding section that holds the separator roll and is capable of performing the winding operation and the winding operation; It may be constituted by a nip roll portion capable of performing a releasing operation.

In the joining apparatus according to the first aspect of the present invention, the winding mechanism may be constituted by a winding portion holding the separator roll and capable of performing the winding operation and the releasing operation.

The joining apparatus according to the first aspect of the present invention may have a pressing member that presses the separator sheet from which the sheet member has been peeled from above in the holding operation.

A joining apparatus according to a first aspect of the present invention includes a detecting unit that detects a relative position of the sheet member held by the joining member to the joining member; And a control device for controlling the relative position of the optical display component held on the bonding stage with respect to the bonding member.

The joining apparatus according to the first aspect of the present invention has a detecting means for detecting a defect mark displayed on the optical member sheet, and the joining member holds a portion where the defect mark of the optical member sheet is detected on the holding surface And may be returned to the disposal position.

A production system of an optical display device according to a first aspect of the present invention comprises a bonding apparatus for bonding an optical member to an optical display component and joining the sheet member as the optical member to the optical display component, The apparatus is a bonding apparatus according to the first aspect of the present invention.

A production system of an optical display device according to a second aspect of the present invention is a production system of an optical display device comprising a joining device for joining a sheet piece larger than the optical member to the optical display component, A detecting device for detecting a cut line of the sheet piece based on the data and a cutting device for cutting the sheet piece from the sheet piece by cutting the sheet piece joined to the optical display part along the cut line And the joining apparatus is the joining apparatus according to the first aspect of the present invention.

A joining method according to a first aspect of the present invention is a joining method for joining a sheet piece to an optical display component, comprising: a winding step of winding an optical member sheet together with a separator sheet from a disk roll; While the retaining surface of the joining member is brought into contact with the sheet piece supported from the side of the separator sheet by the sheet stage so as to roll the joining member, And holding the sheet piece held on the holding surface against the optical display component held on the bonding stage while rotating the joining member so that the sheet piece is held in contact with the optical display component And a separating step of separating the separator sheet, which has passed through the sheet stage, And a separating step of separating the separator sheet from the separator sheet by loosening the separator sheet wound on the separator roll in a predetermined period immediately after the holding operation of the sheet piece is started and loosening the separator sheet Process.

A production method of an optical display device according to a first aspect of the present invention comprises a bonding step of bonding an optical member to an optical display part and bonding the sheet piece as the optical member to the optical display part, The process is carried out using the joining method according to the first aspect of the present invention.

A production method of an optical display device according to a second aspect of the present invention is a production method of an optical display device including a joining step of joining a sheet piece larger than the optical member to the optical display part, A detecting step of detecting a cut line of the sheet piece based on the data and a cutting step of cutting the sheet piece from the sheet piece by cutting the sheet piece joined to the optical display part along the cut line And the joining step is carried out using the joining method according to the first aspect of the present invention.

According to the present invention, it is possible to provide a bonding apparatus, a bonding method, a production system of an optical display device, and a production method of an optical display device that can suppress bonding failure.

1 is a side schematic view of a bonding apparatus according to a first embodiment of the present invention;
Fig. 2A is an explanatory view of the operation of the bonding apparatus according to the first embodiment of the present invention; Fig.
Fig. 2B is an explanatory view of the operation of the bonding apparatus according to the first embodiment of the present invention; Fig.
FIG. 2C is an explanatory view of the operation of the bonding apparatus according to the first embodiment of the present invention; FIG.
Fig. 2D is an explanatory view of the operation of the bonding apparatus according to the first embodiment of the present invention. Fig.
3 is a sectional schematic view of a polarizing film.
4 is a side schematic view of a bonding apparatus according to a second embodiment of the present invention.
5 is a side schematic view of a bonding apparatus according to a third embodiment of the present invention.
Fig. 6A is an explanatory view of the operation of the bonding apparatus according to the third embodiment of the present invention; Fig.
Fig. 6B is an explanatory view of the operation of the bonding apparatus according to the third embodiment of the present invention; Fig.
Fig. 6C is an explanatory view of the operation of the bonding apparatus according to the third embodiment of the present invention; Fig.
FIG. 6D is an explanatory view of the operation of the bonding apparatus according to the third embodiment of the present invention; FIG.
7 is a side schematic view of a bonding apparatus according to a fourth embodiment of the present invention.
8 is a view for explaining the detection of a relative position with respect to the joining head of the sheet piece;
FIG. 9A is a view for explaining correction of a relative position of a bonding stage with respect to a sheet piece; FIG.
9B is a view for explaining correction of the relative position of the bonding stage with respect to the sheet piece;
10 is a schematic diagram of an optical display device production system according to a fifth embodiment of the present invention.
11 is an explanatory diagram of a sheet cutting process according to a sixth embodiment of the present invention.
Fig. 12A is an explanatory diagram of a joining position determining method of a sheet piece according to a sixth embodiment of the present invention; Fig.
12B is an explanatory diagram of a joining position determining method of a sheet piece according to a sixth embodiment of the present invention.
13 is a schematic view of an optical display device production system according to a sixth embodiment of the present invention.

[First Embodiment]

Hereinafter, a bonding apparatus according to a first embodiment of the present invention will be described with reference to Figs. 1 to 3. Fig.

1 is a side schematic view of a bonding apparatus 1 of the present embodiment. The joining apparatus 1 of the present embodiment joins a sheet piece F11 obtained by half cutting an elongated optical member sheet F1 to one surface of an optical display component P. [

As the optical display component P, for example, a panel-type optical display component such as a liquid crystal panel or an organic EL panel can be used. As the optical member sheet F1, 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. 3 is used as the optical member sheet F1.

The optical member sheet F1 shown in Fig. 3 has a film-like optical member main body F1a, an adhesive layer F2a formed on one surface (upper surface in Fig. 3) of the optical member main body F1a, A separator sheet F3a detachably laminated on one surface of the optical member main body F1a via the surface protective film F2a and a surface protective film F3b laminated on the other surface of the optical member main body F1a (F4a).

The optical member main body F1a functions as, for example, a polarizing plate and is bonded over the entire region of the display region of the optical display component P and its peripheral region. The optical member main body F1a is bonded to the optical display component P via the adhesive layer F2a while the separator sheet F3a is separated while leaving the adhesive layer F2a on one side thereof. Hereinafter, the portion excluding the separator sheet F3a from the optical member sheet F1 is referred to as a bonded sheet F5. The sheet piece F11 is a sheet piece of a bonded sheet F5 obtained by cutting the elongated bonded sheet F5 to a predetermined size.

The separator sheet F3a protects the adhesive layer F2a and the optical member main body F1a until separated from the adhesive layer F2a. The surface protection film F4a protects the optical display part P together with the optical member main body F1a. The optical member sheet F1 may be configured not to include the surface protection film F4a and the surface protection film F4a may be separated from the optical member main body F1a.

The optical member main body F1a includes a sheet polarizer F6 and a first film F7 bonded to one side of the polarizer F6 with an adhesive or the like and an adhesive or the like on the other side of the polarizer F6 And a second film F8 bonded to the second film F8. The first film F7 and the second film F8 are, for example, protective films for protecting the polarizer F6.

1, the bonding apparatus 1 of the present embodiment includes, for example, a sheet conveying apparatus 10, a head apparatus 19, a bonding stage 14, and a control apparatus 50 .

The sheet conveying apparatus 10 includes a winding portion 11, a cut portion 12, a sheet stage 13, a winding portion 17, and a nip roll portion 18, for example. The sheet conveying apparatus 10 has a plurality of guide rollers G1 and G2 that wind and wrap the optical member sheet F1 along a predetermined conveying path.

The winding unit 11 holds the disc roll R1 surrounded by the elongated optical member sheet F1 and holds the optical member sheet F1 in a state that the optical member sheet F1 is separated from the disc roll R1 together with the separator sheet F3a And is wound in the longitudinal direction. The optical member sheet F1 has a width equal to the length of the first side (for example, the short side) of the display area of the optical display component P in the horizontal direction (the sheet width direction) perpendicular to the conveying direction .

Hereinafter, the direction in which the optical member sheet F1 (separator sheet F3a) is withdrawn from the unwinding portion 11 and conveyed is referred to as a sheet conveying direction. The upstream side in the sheet conveying direction is referred to as the upstream side of the sheet conveying direction and the downstream side in the sheet conveying direction is referred to as the sheet conveying downstream side.

The cut portion 12 cuts the optical member sheet F1 wound from the original roll R1 in the thickness direction while leaving the separator sheet F3a remaining to form the sheet piece F11 Quot; half-cut "). The cut portion 12 has a length equal to the length of the second side (e.g., the long side) of the display region of the optical display component P in the longitudinal direction orthogonal to the sheet width direction, for example, The optical member sheet F1 is half-cut over the entire width in the sheet width direction.

In the optical member sheet F1 after the half cut, a cut line extending over the entire width in the sheet width direction of the optical member sheet F1 is formed. The optical member sheet F1 is divided into sections each having a length corresponding to the length of the second side of the display region in the longitudinal direction by the cut-off line. These sections become one sheet piece F11 in the bonded sheet F5, respectively.

The sheet stage 13 supports the lower surface (the surface on the side of the separator sheet F3a shown in Fig. 3) of the optical member sheet F1 wound from the disc roll R1. The sheet stage 13 is formed so as to span both a cut position where the optical member sheet F1 is half cut by the cut portion 12 and a peel position where the sheet member F11 is peeled from the separator sheet . After the sheet piece F11 is formed by the half cut, the sheet stage 13 supports the separator sheet F3a to which the sheet piece F11 is pasted.

The winding section 17 holds the separator roll R2 and separates the sheet piece F11 from the separator sheet F3a by the joining head 15 after the sheet piece F11 is peeled off, (F3a) is wound around the separator roll (R2). The winding section 17 rotates in synchronization with the nip roll section 18 described later, thereby winding and unwinding the separator sheet F3a.

The nip roll section 18 includes a first nip roll 18a and a second nip roll 18b which are arranged in parallel to each other in the direction of the axis of rotation. The first nip roll 18a and the second nip roll 18b rotate in synchronism with each other to rotate the separator sheet F3a from the sheet conveying upstream side to the sheet conveying downstream side (the winding direction of the take- From the sheet conveying downstream side toward the sheet conveying upstream side (the winding direction from the winding section 17). The nip roll section 18 is capable of releasing the separator sheet F3a wound on the separator roll R2 so as to loosen the separator sheet F3a so as to prevent the sheet piece F11 from peeling off from the separator sheet F3a Do.

Therefore, the winding section 17 and the nip roll section 18 perform the winding operation for winding the separator sheet F3a passing through the sheet stage 13 onto the separator roll R2, and the winding operation for winding the separator sheet F3a wound on the separator roll R2 Thereby constituting a winding mechanism capable of releasing the separator sheet F3a.

The head device 19 includes, for example, a bonding head 15 and a head driving device 16.

The joining head (joining member) 15 has a holding surface 15a capable of holding the sheet piece F11. The holding surface 15a is a curved surface curved toward the sheet piece F11 parallel to the sheet width direction of the optical member sheet F1. That is, the holding surface 15a is curved along the advancing direction of the optical member sheet F1. The holding surface 15a is, for example, a tacky surface of a pressure-sensitive adhesive sheet made of a sticky silicone rubber or the like. The holding surface 15a has a weaker adhesive force than, for example, the bonding surface of the sheet piece F11, and it is possible to repeatedly bond and peel the surface protective film F4a of the sheet piece F11.

The head driving device 16 can turn the joining head 15 on the optical member sheet F1 and the optical display component P. [ In other words, the head driving device 16 can horizontally move the joining head 15 while rotating the rotary shaft 15b about the axis. Further, the head driving device 16 can elevate the joining head 15 in the vertical direction.

The control device 50 includes a computer system. The computer system includes an arithmetic processing unit such as a CPU and a storage unit such as a memory or a hard disk. The control device 50 includes an interface capable of performing communication with an external device of the computer system and controls the operation of various devices constituting the bonding device 1 and various devices outside the bonding device 1 in a general manner do.

The bonding head 15 can move up and down and horizontally move between the sheet conveying apparatus 10 and the bonding stage 14 by controlling the head driving apparatus 16 by the control device 50. [ By controlling the head driving device 16 by the control device 50, the joining head 15 is supported by the sheet stage 13 on the sheet piece F11 supported from the separator sheet F3a side, And a holding operation for holding the sheet piece F11 on the holding surface 15a and a holding operation for holding the sheet piece F11 held on the holding surface 15a on the joining stage 14 It is possible to carry out a joining operation of rolling on the optical display component P held in contact with the optical display component P and joining to the optical display component P.

The bonding stage 14 holds the optical display component P by, for example, adsorbing the lower surface of the optical display component P (the surface opposite to the surface to which the sheet piece F11 is bonded).

Hereinafter, the bonding operation of the bonding sheet F5 to the bonding head 15 will be described with reference to Figs. 2A to 2D.

First, the joining head 15 moves horizontally to a position vertically above the peeling position of the sheet sheet (hereinafter, this position is referred to as a "waiting position"). In the standby position, the joining head 15 rotates around the rotary shaft 15b so that the end of the holding surface 15a downstream of the sheet conveyance is located at the most vertically downward position. In this state, the bonding head 15 waits at the standby position while the half cut is performed.

The winding section 11, the winding section 17 and the nip roll section 18 are arranged such that the end F11e on the sheet conveyance downstream side of the bonding sheet F5 is in contact with the holding surface 15a at the downstream side of the sheet conveyance downstream end, the drive is once stopped.

Next, the control device 50 carries out a half cut of the bonded sheet F5 by the cut portion 12. Thus, as shown in Fig. 2A, a portion of the downstream side of the sheet conveyance of the bonded sheet F5 having a length equivalent to the length of the second side (e.g., the long side) of the display region of the optical display component P , And is cut out as a sheet piece F11.

After the sheet piece F11 is formed by the half cut, the bonding head 15 is lowered by a predetermined amount by the head driving device 16 as shown in Fig. 2A. The end F11e on the downstream side of the sheet conveyance of the bonding sheet F5 contacts the end 15e on the downstream side of the sheet conveyance of the holding surface 15a and is affixed to the holding surface 15a.

Thereafter, as shown in Fig. 2B, the head driving device 16 moves the joining head 15 in the direction in which the sheet piece F11 attached to the holding surface 15a is wound (counterclockwise in Fig. 2B) And moves the joining head 15 in the sheet conveying upstream side (left side in the drawing) in synchronism with this rotation. As a result, the entire sheet member F11 is adhered to the holding surface 15a.

The end portion F11e of the sheet piece F11 is engaged with the holding surface 15a of the joint head 15 when the sheet piece F11 is adhered to the joint head 15, The separator sheet F3a is rotationally driven in a direction to loosen the separator sheet F3a in synchronism with the above-described rotation and movement of the bonding head 15 so as to continuously take a state of being in close contact with the separator sheet 15a. As a result, the separator sheet F3a is fed to the upstream side of the sheet conveying direction (left side in Fig. 2B) and becomes loose. The end F11e of the sheet piece F11 is continuously adhered to the holding surface 15a so that the end F11e of the sheet piece F11 is surely adhered to the holding surface 15a.

The joining head 15 continues to rotate and move in order to adhere the sheet piece F11.

As a result, the separator sheet F3a having passed through the sheet stage 13 has a bent portion F3a1 curved toward the sheet conveying upstream side as shown in Fig. 2B.

As shown in Fig. 2C, the winding section 17 (see Fig. 1) and the nip roll section 18 are rotated (rotated to the right in Fig. 2C) in a direction in which the separator sheet F3a is wound . Thus, a force is exerted on the interface between the sheet piece F11 and the separator sheet F3a to peel off the both. Thus, the separator sheet F3a can be peeled off from the sheet piece F11. Between this time, the bent portion F3a1 gradually becomes smaller and finally disappears. The timing for switching the rotation direction of the winding section 17 and the nip roll section 18 from the reverse direction to the forward direction is such that the adhesion of the sheet piece F11 to the holding surface 15a is 5% to 70% Preferably, the timing is completed to 10% to 50%.

In this manner, the surface protective film F4a of the sheet piece F11 (see Fig. 3: the surface opposite to the bonding surface) is sequentially adhered to the holding surface 15a. At this time, the adhesive layer F2a (the bonding surface with the optical display component P) of the bonding sheet F5 is downward.

After the entire sheet member F11 is adhered to the holding surface 15a, the head driving device 16 moves the bonding head 15 upward by a predetermined amount as shown in Fig. 2D. With the movement of the bonding head 15, the bonding sheet F5 moves upward together with the bonding head 15. At this time, the bonding sheet F5 is completely separated from the separator sheet F3a and is in a state of being bonded to the holding surface 15a. The bonding head 15 to which the bonding sheet F5 is adhered to the holding surface 15a is moved onto the bonding stage 14 and the bonding sheet F5 bonded to the holding surface 15a is transferred to the optical display part P ).

As described above, in the bonding apparatus 1 according to the present embodiment, the separator sheet F3a wound around the separator roll R2 is released in a predetermined period immediately after the holding operation of the sheet piece F11 is started , A releasing operation for loosening the separator sheet F3a is performed so that the sheet piece F11 is not peeled off from the separator sheet F3a.

According to this configuration, during the holding operation of the sheet piece F11, the end F11e pasted to the end portion 15e of the bonding head 15 at the beginning among the sheet pieces F11 is brought into contact with the bonding head 15 Continue to close. As a result, bubbles and wrinkles are generated at the time of joining the sheet piece F11 to the optical display part P, the accuracy of joining is reduced, and the sheet piece F11 is dropped from the joining head 15 It is possible to suppress the bonding failure.

Further, since it is not necessary to increase the adhesive strength of the bonding head 15 in order to suppress the bonding failure, only the thin film layer adhered to the bonding head 15 is peeled off when the sheet piece F11 is constituted by a multilayer thin film It is possible to avoid the problem that the optical display component P is lifted and damaged by the adhesive force of the bonding head 15 after the sheet member is bonded.

[Second Embodiment]

Hereinafter, a bonding apparatus according to a second embodiment of the present invention will be described with reference to FIG.

4 is a side schematic view of the bonding apparatus 2 of the present embodiment. Hereinafter, components common to those of the first embodiment will be denoted by the same reference numerals, and detailed description thereof will be omitted.

In the first embodiment, the nip roll portion 18 is rotated in the direction to feed the separator sheet F3a toward the sheet conveying upstream side in synchronism with the rotation of the take-up portion 17, whereby the above-described releasing operation has been realized. On the other hand, in the present embodiment, the joining apparatus 2 does not have a nip-down portion, and the releasing operation is performed only by the rotation of the winding unit 17. [ Therefore, in the present embodiment, the winding section 17 performs the winding operation in which the separator sheet F3a passing through the sheet stage 13 is wound on the separator roll R2 and the winding operation in which the separator sheet F3a wound on the separator roll R2 is wound, Thereby constituting a winding mechanism capable of releasing the sheet F3a. In this respect, this embodiment is very different from the first embodiment.

The winding section 17 is a section where the separator sheet F3a passing through the sheet stage 13 is separated from the separator roll F2a after the sheet piece F11 is peeled off from the separator sheet F3a by the joining head 15 Up winding operation.

The winding unit 17 is configured to release the separator sheet F3a wound on the separator roll R2 in a predetermined period immediately after the holding operation of the sheet piece F11 is started to separate the separator sheet F3a from the separator sheet F3a, The separator sheet F3a is loosened so as not to peel off the separator sheet F11. The timing for switching the rotation direction of the take-up part 17 from the reverse direction to the forward direction is set such that the adhesion of the sheet piece F11 to the holding surface 15a is 5% to 70%, preferably 10% The timing is completed up to 50%.

The bonding operation of the bonding sheet F5 to the bonding head 15 is the same as that of the first embodiment except that the winding operation is performed only by the winding section 17. [

As described above, also in the bonding apparatus 2 according to the present embodiment, during the holding operation of the sheet piece F11, the end portion 15e of the bonding head 15 at the beginning of the sheet piece F11 The end portion F11e pasted to the bonding head 15 is closely contacted. As a result, bubbles and wrinkles are generated at the time of joining the sheet piece F11 to the optical display part P, the accuracy of joining is reduced, and the sheet piece F11 is dropped from the joining head 15 It is possible to suppress the bonding failure.

Further, since it is not necessary to increase the adhesive strength of the bonding head 15 in order to suppress the bonding failure, only the thin film layer adhered to the bonding head 15 is peeled off when the sheet piece F11 is constituted by a multilayer thin film It is possible to avoid the problem that the optical display component P is lifted and damaged by the adhesive force of the bonding head 15 after the sheet member is bonded.

[Third embodiment]

Hereinafter, a bonding apparatus 3 according to a third embodiment of the present invention will be described with reference to Figs. 5, 6A to 6D, 8, 9A, and 9B. 5 is a side schematic view of the bonding apparatus 3. Fig.

5, the joining apparatus 3 is configured such that the optical member sheet F1 is stretched while the optical member sheet F1 is being pulled out from the roll roll R1 around which the optical member sheet F1 is wound, The sheet conveying device 31 holds the sheet piece F11 of the bonded sheet F5 cut from the optical member sheet F1 and holds the sheet piece F11 And a bonding portion 40 to be bonded to the upper surface of the optical display part P.

The sheet conveying apparatus 31 conveys the bonded sheet F5 using the separator sheet F3a (see Fig. 3) as a carrier, and the sheet roll R1 is wound around the optical member sheet F1 in a strip- And a cutting device 31b for applying a half cut to the optical member sheet F1 pulled out from the main roll R1 is provided on the optical member sheet F1, . The sheet conveying apparatus 31 further includes a knife edge (pressing member) 31c for pressing the separator sheet F3a from above when joining the joining sheet F5 from the half-cut optical member sheet F1, And a sheet stage 33 for supporting the lower surface of the optical member sheet F1 together with the winding portion 31d for holding the separator roll R2 for winding the separator sheet F3a.

The sheet conveying apparatus 31 has a nip roll section 18. The nip roll section 18 includes a first nip roll 18a and a second nip roll 18b which are arranged in parallel to each other in the direction of the axis of rotation. The first nip roll 18a and the second nip roll 18b rotate in synchronism with each other so that the separator sheet F3a is moved from the sheet conveying upstream side to the sheet conveying downstream side and from the sheet conveying downstream side to the sheet conveying upstream side . The nip roll section 18 unwinds the separator sheet F3a wrapped around the separator roll R2 in a predetermined period immediately after the holding operation of the sheet piece F11 is started to separate the sheet piece F11 from the separator sheet F3a, It is possible to perform a releasing operation for loosening the separator sheet F3a so as not to peel off the separator sheet F3a.

The sheet conveying apparatus 31 has a plurality of guide rollers GR1, GR2 and GR3 which are wound around the optical member sheet F1 along a predetermined conveyance path and a press roller GR4. 12B) of the optical display component P (see Fig. 12B) in the horizontal direction (the sheet width direction) orthogonal to the conveying direction of the optical member sheet F1 P4) corresponding to the length of the short side.

The winding portion 31a positioned at the time of the sheet conveyance device 31 and the winding portion 31d positioned at the end point of the sheet conveyance device 31 are driven in synchronization with each other, The winding portion 31d winds the separator sheet F3a through the knife edge 31c while the winding portion 31a guides the optical member sheet F1 in its carrying direction.

The cutting device 31b has a length equal to the length of the display region P4 (corresponding to the long side length of the display region P4 in this embodiment) in the longitudinal direction orthogonal to the sheet width direction of the optical member sheet F1 The half-cut is performed over the full width along the seat width direction.

The cutting device 31b is arranged so that the optical member sheet F1 (the separator sheet F3a) is not broken (the predetermined thickness remains in the separator sheet F3a) by the tension acting during the conveyance of the optical member sheet F1 ), And the half-cut is performed up to the vicinity of the interface between the adhesive layer F2a and the separator sheet F3a by adjusting the forward and backward positions of the cutting edge. A laser device may be used instead of the above-described cutting blade.

The optical member main body F1a and the surface protective film F4a are cut in the thickness direction of the optical member sheet F1 after the half cut to form a cut line extending over the entire width of the optical member sheet F1 in the sheet width direction do. The optical member sheet F1 is divided into sections each having a length corresponding to the long side length of the display region P4 in the longitudinal direction by the cut-off line. These sections become one sheet piece F11 in the bonded sheet F5, respectively.

The knife edge (pressing member) 31c is located above the optical member sheet F1 that is substantially horizontally transported from the left to right in FIG. 5 and extends over the entire width of the optical member sheet F1 in the sheet width direction . The knife edge 31c is capable of advancing and retreating along the conveying direction of the optical member sheet F1 and presses the separator sheet F3a separated from the optical member sheet F1 after half cut.

The joining portion 40 includes a joining stage 41 for holding the optical display component P at the time of joining, a joining drum 32, and a driving device (not shown) for driving the joining drum 32 42). The drive device 42 is electrically connected to the control device 25 so that the drive of the drive device 42 can be controlled by the control device 25. [

The bonding stage 41 is for holding the optical display part P to which the sheet piece F11 is bonded. The bonding stage 41 holds the optical display component P by, for example, suction.

The joining drum (joining member) 32 has a cylindrical holding surface 32a parallel to the sheet width direction. The holding surface 32a has a weaker adhesive force than, for example, the bonding surface (adhesive layer F2a) of the bonding sheet F5, and it is possible to repeatedly bond and peel the surface protective film F4a of the bonding sheet F5 .

Figs. 6A to 6D are views for explaining the attaching operation of the bonding sheet F5 to the bonding drum 32. Fig.

The winding portion 31a and the winding portion 31d (see Fig. 5) are driven at the timing when the end portion 31e of the bonding sheet F5 on the downstream side of the sheet conveyance reaches below the standby position of the bonding drum 32 . 6A, when the end portion 31e of the bonding sheet F5 on the downstream side of the sheet conveyance reaches the lower side of the bonding drum 32, the driving device 42 moves the bonding drum 32 in a predetermined amount Descend. The end face 31e of the bonding sheet F5 is attached to the holding face 32a of the bonding drum 32 so that the holding face 32a contacts the bonding sheet F5.

In the present embodiment, a first detection camera 34 for detecting the leading end of the sheet member on the downstream side of the sheet conveyance is provided below the leading end of the knife edge 31c.

The first detection camera 34 picks up the end portion 31e of the bonding sheet F5 through the through hole 33a formed in the seat stage 33. [ The detection information of the first detection camera 34 is sent to the control device 25. [ The control device 25 temporarily stops the sheet conveying device 31 at a point of time when the first detection camera 34 detects the end portion 31e.

The controller 25 detects the downstream end 31e of the bonding sheet F5 and stops the sheet conveying apparatus 31 once the first detecting camera 34 stops the bonding of the joint 31B by the cutting device 31b The sheet F5 is cut. That is, between the detection position (the optical axis extending position of the first detection camera 34) by the first detection camera 34 and the cut position (the cutting edge advance / retreat position of the cutting device 31b) by the cutting device 31b The distance along the sheet conveyance path corresponds to the length of the sheet piece F11 of the joint sheet F5.

The cutting device 31b is movable along the sheet conveying path and moves along the sheet conveying path between the detecting position by the first detecting camera 34 and the cutting position by the cutting device 31b The distance changes. The movement of the cutting device 31b is controlled by the control device 25. After the cutting of the bonding sheet F5 by the cutting device 31b, , The deviation is corrected by the movement of the cutting device 31b when the cutting end deviates from the predetermined reference position. It is also possible to correspond to the cut of the bonded sheet F5 having a different length by the movement of the cutting device 31b.

The first detection camera 34 also detects a defect mark displayed on the joint sheet F5. The defect mark is marked by ink jet or the like from the surface protective film (F4a) side to a defect spot found in the first optical member sheet (F1) at the time of producing the original roll (R1). The first detection camera 34 is a detection means for detecting a defect mark displayed on the optical member sheet F1.

The defect of the above-mentioned optical member sheet F1 is a defect in the optical member sheet F1, for example, in the presence of foreign matter composed of at least one of solid, liquid and gas in the optical member sheet F1, A portion where irregularities or scratches are present in the optical member sheet F1, a portion that becomes a bright spot due to distortion or material deviation of the optical member sheet F1, and the like.

As described above, when a defect mark is detected on the joint sheet F5, the information on which the defect mark is detected is sent from the first detection camera 34 to the control device 25. [ After the bonding sheet F5 is bonded to the bonding drum 32, the control device 25 controls the driving of the driving device 42. [ The driving device 42 moves the joining drum 32 to a disposal position not shown where the joining stage 41 is avoided and moves the joining drum 32 to a position close to the joining drum 32 The sheet F5 is superimposed. That is, the joining drum (joining member) 32 holds the portion where the defect mark of the optical member sheet F1 is detected on the holding face 32a and returns it to the discard position. As a result, bonding of the bonding sheet F5 having the defect mark to the optical display component P can be avoided.

After the cutting of the bonding sheet F5, the driving device 42 rotates in the direction (counterclockwise direction) in which the bonding sheet F5 attached to the holding face 32a is wound as shown in Fig. 6B , The joining drum 32 is moved along the upstream side of the conveyance (leftward in Fig. 6B). Thus, by rotating the joining drum 32 while feeding the joining sheet F5, the entire sheet member of the joining sheet F5 is bonded to the holding surface 32a.

The nip roll portion 18 and the take-up portion 31d (refer to Fig. 5) are provided so as not to break the separator sheet F3a when the bonding sheet F5 is bonded to the bonding drum 32, The separator sheet F3a is rotated in the direction to unwind the separator sheet F3a. The separator sheet F3a is sent out to the upstream side of the conveying, thereby becoming loose. The joining drum 32 continues the above-described rotation and movement in order to wind the joining sheet F5 attached to the holding surface 32a. As a result, the bonding sheet F5 is loosened in the vicinity of the portion (the end portion 31e) attached to the bonding drum 32 (the holding surface 32a), and the separator sheet F3a is pressed against the sheet stage 33 And the bent portion F3a1 is curved upward.

Therefore, the nip roll section 18 and the winding section 31d perform the winding operation for winding the separator sheet F3a passed through the sheet stage 33 onto the separator roll R2 and the winding operation for winding the separator sheet F3a wound on the separator roll R2 Thereby constituting a winding mechanism capable of releasing the separator sheet F3a.

In order to prevent lifting of the separator sheet F3a, the knife edge 31c is brought close to the side of the joining drum 32 from the standby position in synchronization with the timing at which the separator sheet F3a is unwound, Likewise, the leading end is brought into contact with the separator sheet F3a.

The nip roll section 18 and the winding section 31d are rotationally driven in the winding direction of the separator sheet F3a at the timing when the leading end of the knife edge 31c contacts the separator sheet F3a. At this time, the joining drum 32 continues to rotate and move in order to wind the joining sheet F5 attached to the holding surface 32a.

Thus, the bonded sheet F5 is wound along the circumferential direction of the holding face 32a of the bonding drum 32. [ The joining apparatus 3 winds the separator sheet F3a by the winding unit 31d while winding the joining sheet F5 by the joining drum 32. [ At this time, the separator sheet F3a is pressed upward by the knife edge 31c.

As a result, a force is exerted on the interface between the bonding sheet F5 and the separator sheet F3a to peel off the separator sheet F3a from the bonding sheet F5. The bent portion F3a1 gradually becomes smaller and finally disappears. In this manner, the surface protecting film F4a (see FIG. 3: the surface opposite to the bonding surface) of the sheet piece of the bonding sheet F5 is sequentially bonded to the holding surface 32a of the bonding drum 32. [ At this time, the adhesive layer F2a (the bonding surface with the optical display component P) of the bonding sheet F5 is downward.

The driving device 42 is configured to adhere the bonding sheet F5 to the holding face 32a up to the section where the cut line is formed by rotationally driving the bonding drum 32 by a predetermined amount, The drum 32 is moved upward by a predetermined amount. At this time, the sheet conveying apparatus 31 stops the feeding operation of the separator sheet F3a. Further, the knife edge 31c returns to the standby position.

With the movement of the bonding drum 32, the bonded sheet F5 bonded to the holding face 32a moves upward together with the bonding drum 32. [ At this time, the bonded sheet F5 is completely separated from the separator sheet F3a, and is in a state of being bonded to the holding face 32a. The joining drum 32 to which the joining sheet F5 is adhered to the holding surface 32a is moved on the joining stage 41 and the joining sheet F5 bonded to the joining drum 32 To the optical display part (P).

In this embodiment, when the joining drum 32 to which the joining sheet F5 is bonded is moved from above the sheet stage 33 to the joining stage 41, the joining sheet F5 adhered and held on the retaining surface 32a (Sheet piece F11) are respectively picked up by the second detection camera 35 (see Fig. 8) as an image pickup device. The detection information of each second detection camera 35 is sent to the control device 25. [

The control device 25 confirms the arrangement position of the bonding sheet F5 with respect to the bonding drum 32 based on the imaging data of each second detection camera 35, for example. The control device 25 controls the joining stage 41 in the direction orthogonal to the rotation axis of the joining drum 32 and in the direction perpendicular to the rotation axis of the joining drum 32 by a drive device (not shown), based on the image pickup data of each second detection camera 35. [ Or in a direction parallel to the rotational axis of the drum 32, or rotate the bonding stage 41 in a horizontal plane by a rotating device (not shown). Alignment is performed to adjust the relative bonding positions of the optical display part P held on the bonding stage 41 and the bonding sheet F5 held on the bonding drum 32. [ Therefore, the second detection camera 35 is a detection unit that detects the relative position of the sheet piece F11 held by the bonding drum (bonding member) 32 with respect to the bonding drum (bonding member) 32. [

In the present embodiment, the bonding apparatus 3 is provided with a pair of third detection cameras 36 for performing horizontal alignment of the optical display component P above the bonding stage 41, (See Figs. 9A and 9B).

Fig. 8 is a view for explaining the adjustment of the bonding position by the bonding apparatus 3. Fig. 8 is an explanatory view of the arrangement position of the bonding sheet F5 bonded to the bonding drum 32 and the left end view is a diagram showing the arrangement of the optical display parts P held on the bonding stage 41 And the illustration at the lower end is an explanatory diagram of the adjustment amount of the bonding stage 41. Fig. In Fig. 8, for convenience, one second detection camera 35 among the four second detection cameras 35 is shown.

The edge portion of the joint sheet F5 (sheet piece F11) adhered and held on the holding surface 32a is picked up by the second detection camera 35 as shown on the right end of Fig.

In the following description, it is assumed that the distance between the detection position (the optical axis extending position of the two second detection cameras 35) by the two second detection cameras 35 disposed along the rotation direction of the splicing drum 32, The distance along the circumferential direction of the camera 32 is referred to as an inter-camera distance Lc. The camera-to-camera distance Lc is approximately the same as the length of the sheet member of the above-described junction sheet F5.

The position of the edge of the joint sheet F5 is moved from the start point Ep1 to the end point Ep2 when the joint sheet F5 is moved by the inter-camera distance Lc as the joint drum 32 rotates. The detection information (position information of the viewpoint Ep1 and the end point Ep2) of the second detection camera 35 is sent to the control device 25. [ 8, the control device 25 calculates the distance between the camera distance Lc and the time point Ep1 and the end point Ep2 in the direction parallel to the rotation axis of the bonding drum 32 (Tan? = Le / Lc) on the basis of the difference? Le (hereinafter referred to as a viewpoint / endpoint deviation Le).

The edge portion of the optical display component P held by the bonding stage 41 is picked up by the third detection camera 36 (see Figs. 9A and 9B) as shown in the left end of Fig. For example, marks Pm (for example, three marks Pm1, Pm2, and Pm3 in the present embodiment) are provided on the respective corner portions of the optical display part P, respectively. The detection information (position information of the first mark Pm1, the second mark Pm2, and the third mark Pm3) of the third detection camera 36 is sent to the control device 25. [ The control device 25 drives and controls the bonding stage 41 on the basis of the detection information of the third detection camera 36 to align the optical display component P held by the bonding stage 41. [ The control device 25 drives and controls the rotating device (not shown) based on the correction angle? To rotate the bonding stage 41 in the horizontal plane by an angle?. Thereby, alignment of the optical display part P with respect to the joining drum 32 is performed.

Figs. 9A and 9B are views for explaining the joining step of the joining sheet F5 to the optical display part P by the joining drum 32. Fig. As shown in Fig. 9A, the control device 25 moves the bonding drum 32 to a predetermined position above the bonding stage 41. As shown in Fig. The controller 25 controls the position of the end portion of the bonding sheet F5 bonded to the holding face 32a and the position of the end portion of the optical display component P held on the bonding stage 41 in a planar manner Alignment of the drum 32 and the bonding stage 41 is performed.

The controller 25 moves the joining drum 32 down so that the front end of the bonded sheet F5 bonded to the holding surface 32a is pressed against the end of the optical display component P from above .

The bonding drum 32 is lowered so that the bonded sheet F5 is pressed against the optical display component P. [ At this time, the bonding drum 32 pushes the bonding sheet F5 held on the holding surface 32a against the optical display component P and rotates to rotate the entire bonding sheet F5 to the optical display part P, .

The control device 25 relatively moves the bonding stage 41 in the direction orthogonal to the rotation axis of the bonding drum 32 in accordance with the rotation of the bonding drum 32 at the time of bonding. In this embodiment, the joining drum 32 is rotated in the leftward direction, and the joining stage 41 is moved in the rightward direction of the paper of Fig. 9B. The joining drum 32 may be moved in the leftward direction of FIG. 9B while rotating the joining drum 32 without moving the joining stage 41.

For example, the rotational drive of the splicing drum 32 and the movement of the optical display component P by the splicing stage 41 are performed in synchronization. As a result, friction between the bonding sheet F5 and the optical display component P can be suppressed. Therefore, it is possible to bond the bonding sheet F5 to the optical display component P while suppressing the displacement.

The bonding drum 32 has a weaker adhesive force than the bonding surface (adhesive layer F2a) of the bonding sheet F5 and the surface protective film F4a (see Fig. 3) of the bonding sheet F5 is repeatedly bonded The bonded sheet F5 on which the side of the adhesive layer F2a (see FIG. 3) is pressed against the optical display component P is peeled off from the holding surface 32a to be peeled off from the optical display component P side Respectively. In the present embodiment, the bonding sheet F5 is bonded to the optical display part P along the short side direction of the display area P4 by the bonding device 3. [

8, 9A and 9B are repeated, the bonding process of the bonding sheet F5 to the optical display part P is repeated.

As described above, the bonding stage 41 of the bonding apparatus 3 is arranged so that the relative position of the optical display component P to the bonding drum 32 and the relative position of the optical display part P to the bonding drum 32 Controlled by the control device 25 based on the detection information of each of the detection cameras 34 to 36 that detect the relative position with respect to the joining drum 32. [ Thus, the relative position of the bonding stage 41 with respect to the bonding drum 32 is corrected. As a result, alignment of the optical display part P with respect to the bonding drum 32 is performed. It is also possible to use a sensor in place of the detection camera.

As described above, in the bonding apparatus 3 of the present embodiment, during the holding operation of the sheet piece F11, the end portion 31e pasted to the bonding drum 32 at the beginning of the sheet piece F11, Is brought into close contact with the joining drum (32). As a result, bubbles and wrinkles are generated at the time of joining to the optical display part P, the accuracy of joining is reduced, and it is possible to suppress the defective joining such as separation of the sheet piece F11 from the joining drum 32 . Further, since it is not necessary to increase the adhesive force of the bonding drum 32 to suppress the bonding failure, only the thin film layer which is adhered to the bonding drum 32 is peeled off when the sheet piece F11 is composed of a multilayer thin film It is possible to avoid the problem that the optical display part P is lifted and damaged by the adhesive force of the joining drum 32 after the joining of the sheet piece.

In addition, in the bonding apparatus 3 according to the present embodiment, the alignment of the optical display component P held on the bonding stage 41 is performed based on the detection information of the third detection camera 36, Alignment of the optical display part P with respect to the bonding drum 32 is performed by rotating the bonding stage 41 in the horizontal plane by an angle a on the basis of the correction angle alpha. Accordingly, it is possible to improve the joining accuracy between the sheet member F11 and the optical display component P. [ In the bonding apparatus 3 according to the present embodiment, since the second detection camera 35 is disposed at a position corresponding to the four corner portions of the sheet piece F11, And the bonding position of the bonding drum 32 to the holding surface 32a can be confirmed with good accuracy. Accordingly, it is possible to improve the joining accuracy between the sheet member F11 and the optical display component P. [

The joining apparatus 3 according to the present embodiment has a first detection camera 34 as a detection means for detecting a defect mark displayed on the optical member sheet F1 and is provided with a joining drum (joining member) 32, The portion where the defect mark of the optical member sheet F1 is detected is held on the holding surface 32a and is transported to the discard position. Therefore, the yield of the optical display device is improved.

[Fourth Embodiment]

Hereinafter, a bonding apparatus 4 according to a fourth embodiment of the present invention will be described with reference to FIG. 7 is a side schematic view of the bonding apparatus 4. Fig. Hereinafter, components common to those of the third embodiment will be denoted by the same reference numerals, and detailed description thereof will be omitted.

In the third embodiment, the nip roll portion 18 rotates in the direction to feed the separator sheet F3a (see Fig. 3) toward the sheet conveying upstream side in synchronization with the rotation of the take-up portion 31d, . On the other hand, in the present embodiment, the bonding apparatus 4 does not have the nip roll portion, and the releasing operation is performed only by the rotation of the winding portion 31d. In this respect, this embodiment is very different from the third embodiment.

The winding portion 31d is formed by winding the separator sheet F3a passing the sheet conveying device 31 along the separator roll R2 after the sheet piece F11 is peeled off from the separator sheet F3a by the joining drum 32, The winding operation is performed.

The winding section 31d unwinds the separator sheet F3a wrapped around the separator roll R2 in a predetermined period immediately after the holding operation of the sheet piece F11 is started to separate the separator sheet F3a from the separator sheet F3a, The separator sheet F3a is loosened so as not to peel off the separator sheet F11.

The bonding operation of the bonding sheet F5 to the bonding drum 32 is the same as that of the third embodiment except that the unwinding operation is performed only by the winding section 17. [

As described above, also in the joining apparatus 4 of the present embodiment, during the holding operation of the sheet piece F11, the end portion 31e pasted to the joining drum 32 at the beginning of the sheet piece F11, Is brought into close contact with the joining drum (32). As a result, bubbles and wrinkles are generated at the time of joining to the optical display part P, the accuracy of joining is reduced, and it is possible to suppress the defective joining such as separation of the sheet piece F11 from the joining drum 32 . Further, since it is not necessary to increase the adhesive force of the bonding drum 32 to suppress the bonding failure, only the thin film layer which is adhered to the bonding drum 32 is peeled off when the sheet piece F11 is composed of a multilayer thin film It is possible to avoid the problem that the optical display part P is lifted and damaged by the adhesive force of the joining drum 32 after the joining of the sheet piece.

In addition, also in the bonding apparatus 4 according to the present embodiment, the alignment of the optical display component P held on the bonding stage 41 is performed based on the detection information of the third detection camera 36, Alignment of the optical display part P with respect to the bonding drum 32 is performed by rotating the bonding stage 41 in the horizontal plane by an angle a on the basis of the correction angle alpha. Accordingly, it is possible to improve the joining accuracy between the sheet member F11 and the optical display component P. [ Also in the bonding apparatus 4 according to the present embodiment, since the second detection camera 35 is disposed at a position corresponding to the four corners of the sheet piece F11, The bonding position of the bonding drum 32 to the holding surface 32a can be confirmed with good accuracy. Accordingly, it is possible to improve the joining accuracy between the sheet member F11 and the optical display component P. [

The bonding apparatus 4 according to the present embodiment also has a first detection camera 34 as a detection means for detecting a defect mark displayed on the optical member sheet F1 and has a bonding drum (bonding member) 32, The portion where the defect mark of the optical member sheet F1 is detected is held on the holding surface 32a and is transported to the discard position. Therefore, the yield of the optical display device is improved.

[Fifth Embodiment]

Hereinafter, an optical display device production system according to a fifth embodiment of the present invention will be described with reference to Fig. 10 is a schematic view of an optical display device production system according to this embodiment.

The production system 1000 of the present embodiment includes a cleaning apparatus 1001, a first bonding apparatus 1002, a second bonding apparatus 1003, a peeling apparatus 1004, a third bonding apparatus 1005, And an inspection apparatus 1006.

The cleaning apparatus 1001 cleans the optical display component P carried in from a loader (not shown) to remove foreign matter adhering to the optical display component P. [ The cleaning device 1001 is a device for cleaning the optical display part P such that the cleaning device 1001 is capable of cleaning the first surface (e.g., the surface on which the image displayed on the display area is viewed) and the second surface (e.g., And then the liquid is removed from the first surface and the second surface of the optical display component P, as shown in FIG. The cleaning apparatus 1001 may be, for example, a dry type in which static elimination and dust collection on the front and back surfaces of the optical display component P are performed. The optical display component P is, for example, a liquid crystal panel.

The first joining apparatus 1002 joins the first sheet piece to the first surface of the optical display part P. The first bonding apparatus is, for example, the bonding apparatus of the first embodiment. The first sheet piece is, for example, a sheet-like polarizer cut to a size corresponding to the external dimensions of the optical display component (P). Here, the above-described " size corresponding to the external dimensions of the optical display part (P) " means a size that does not generate a surplus part which is a problem in actual use when the sheet piece is bonded to the optical display part do. The first sheet member has the same configuration as the sheet member shown in Fig. For example, a display area for displaying an image is formed in the central part of the optical display part P, and an electrical part (not shown) having a plurality of terminals to which a semiconductor chip, a flexible printed wiring, An attaching portion is formed. In this case, the first sheet member is an area equal to or smaller than the size of the display area of the optical display part P and the outer shape (outline shape viewed from the plane) of the optical display part P, A sheet piece having the size of the area in which the functional parts such as the attachment part of the electric component in the display part P is avoided is used.

The second joining apparatus 1003 joins the second sheet piece to the second surface of the optical display component P. [ The second sheet piece is, for example, a sheet-like polarizer cut into a size corresponding to the external dimensions of the optical display part (P). The transmission axis of the first sheet member and the transmission axis of the second sheet member are perpendicular to each other.

On the line between the first joining apparatus 1002 and the second joining apparatus 1003, for example, an inverting apparatus (not shown) for inverting the front and back of the optical display component is provided.

The peeling apparatus 1004 peels the surface protective film F4a from the second sheet piece bonded to the second surface of the optical display component P. [

The third joining apparatus 1005 joins the third sheet piece to the surface of the second sheet piece on which the surface protective film F4a has been peeled off by the peeling apparatus 1004. The third sheet piece is, for example, a leaf-shaped brightness enhancement film cut to a size corresponding to the external dimensions of the optical display part (P). The brightness enhancement film is a reflection type polarizing plate that reflects linearly polarized light orthogonal to the transmission axis. The transmission axis of the second sheet member and the transmission axis of the third sheet member are perpendicular to each other.

The inspection apparatus 1006 inspects the optical display part P such as whether or not the positions of the first sheet piece, the second sheet piece and the third sheet piece are proper (the positional deviation is within the tolerance range). The optical display component P judged to be inappropriate is discharged by a discharging means (not shown).

The optical display component P to which the first to third sheet pieces are bonded is shipped as an optical display device after complicated processing such as defect inspection (inspection of a foreign object) and mounting of electric parts is performed, if necessary.

In the above optical display device production system, the bonding apparatuses according to the first to fourth embodiments are used as the first bonding apparatus 1002 and the second bonding apparatus 1003. Thus, it is possible to provide an optical display device in which the defective junction is suppressed.

[Sixth Embodiment]

Hereinafter, an optical display device production system according to a sixth embodiment of the present invention will be described with reference to Figs. 11, 12A, and 12B.

This embodiment differs from the fifth embodiment in that the sheet piece F11 joined to the optical display part P by the joining head is a sheet piece slightly larger than the optical member of the target size, , The sheet piece F11 is bonded to the optical display part P and then the excess portion of the sheet piece F11 is cut by the cutting device. Therefore, the following description will focus on the cutting process of the sheet piece F11. Components common to those of the first to fifth embodiments are denoted by the same reference numerals, and a detailed description thereof will be omitted.

11A and 11B are diagrams for explaining the cutting process of the sheet piece F11 in the optical display device production system of the present embodiment.

The sheet piece F11 is slightly larger than, for example, the size corresponding to the external dimensions of the optical display part P. Here, the above-described "size corresponding to the external dimensions of the optical display part (P)" means a size that does not generate a surplus part which is a problem in actual use when the optical display part (P) is bonded. Since the sheet piece F11 is larger than the size corresponding to the external dimension of the optical display component P, the excess portion which is a problem in practical use is cut by the cutting device 184. [ For example, a display area for displaying an image is formed in the central part of the optical display part P, and an electrical part (not shown) having a plurality of terminals to which a semiconductor chip, a flexible printed wiring, An attaching portion is formed. In this case, for example, the area is equal to or larger than the size of the display area of the optical display part P and the size of the outer shape (outline shape viewed from the plane) of the optical display part P, The optical member FO of the size of the area in which the functional part such as the electric component attaching part of the sheet member F11 is removed is cut out from the sheet piece F11.

The joining device for joining the sheet piece F11 to the optical display part P is the same as the joining device 1 described in the first embodiment, for example. In this embodiment, a detecting device 189 and a cutting device 184 are provided on the conveying line on the downstream side of the joining apparatus.

The detection device 189 includes an image pickup device 183 for picking up an optical display part P to which the sheet piece F11 is bonded. The detecting device 189 detects the cut line WCL of the sheet piece F11 (the position at which the sheet piece F11 should be cut) based on the image pickup data of the image pickup device 183.

The image pickup device 183 picks up the optical display component P over the sheet piece F11 from the information of the optical display component P loaded on the cutting stage 185, for example. The image pickup device 183 picks up an image of four corners of a substrate (for example, a color filter substrate) of the optical display component P to which the sheet piece F11 is bonded. The detection device 189 detects the position of the outer peripheral edge of the substrate by, for example, image processing the image pickup data, and detects the position of the outer peripheral edge as the cut line WCL of the sheet piece F11.

The 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 to cut the sheet piece F11 along the cut line WCL based on the information on the cut line WCL sent from the detecting device 189. [ Thus, the first region FB opposed to the display region of the sheet piece F11 and the second region FS outside the first region FB are separated and the desired size The optical member FO of the size set based on the specifications is cut out from the sheet piece F11.

The cut line WCL of the sheet piece F11 is detected for each optical display part P conveyed on the conveying line. Therefore, even if there is a variation in the size of each optical display part P, the optical member FO having a size corresponding to the external dimension of the optical display part P can be reliably cut from the sheet piece F11.

In this specification, after the sheet piece F11 larger than the optical member FO of the target size is bonded to the optical display part P, the sheet piece F11 is formed on the basis of the image pickup data of the optical display part P F11) is referred to as a " window cut method ". In the present embodiment, the optical member FO of a desired size is bonded to a desired position of the optical display component P by employing the window cutting method. By adopting the window cutting method, the following effects can be obtained.

(1) In the case of joining the sheet piece to the optical display part P, the dimensional variation of each of the optical display part P and the optical member FO and the dimensional variation of the optical member FO with respect to the optical display part P The optical member FO, which is slightly larger than the originally necessary size, is bonded to the optical display component P in consideration of the bonding variation (positional deviation) and the like. However, in this method, an extra area (frame area) not contributing to display is formed in the peripheral portion of the display area of the optical display part P, which hinders miniaturization of the device. In the case of adopting the window cutting method, since the optical display part P after the sheet piece F11 is bonded is picked up and the sheet piece F11 is cut based on the picked-up image data, It is possible to securely arrange the optical member FO having the size of the optical member FO.

(2) The direction of the optical axis of the sheet piece F11 may deviate from the originally designed direction due to manufacturing errors. In this case, the direction of the optical axis of the sheet member F11 (optical member sheet F1) is measured in advance, and the relative bonding position of the sheet member F11 and the optical display member P is However, if the size of the sheet member F11 is matched with the size of the objective optical member FO, such adjustment can not be performed. In the window cutting method, this adjustment is possible because the sheet piece F11 larger than the optical member FO is joined to the optical display part P and then the excess portion of the sheet piece F11 is cut off.

For example, the joining position (relative position) of the sheet piece F11 to the optical display part P can be determined as follows.

12A, a plurality of inspection points CP are set in the width direction of the optical member sheet F1, and the direction of the optical axis of the optical member sheet F1 at each inspection point CP is detected do. The timing for detecting the optical axis may be a manufacturing time of the original roll R1 (see FIG. 1), or may be a period from the original roll R1 to the time when the optical member sheet F1 is pulled out to half cut. The data in the optical axis direction of the optical member sheet F1 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 F1.

The control device 190 acquires the data of the optical axis of each inspection point CP (inspection data of the in-plane distribution of the optical axis) from the above-mentioned storage device and obtains the optical member sheet F1 of the portion where the sheet piece F11 is cut- (The region partitioned by the cut-off line CL) of the optical axis.

For example, as shown in Fig. 12B, when the angle (deviation angle) between the direction of the optical axis and the edge line EL of the sheet piece F11 is θ and the smallest angle (minimum deviation angle) is θmin, (= (? Max +? Min) / 2) of the maximum deviation angle? Max and the minimum deviation angle? Min as the average deviation angle. The direction of the average deviation angle? Mid with respect to the edge line EL of the sheet piece F11 is detected as the direction of the average optical axis of the sheet piece F11. The deviation angle is calculated, for example, with respect to the edge line EL of the sheet piece F11, with the left-turn direction being positive and the right-turn direction being negative.

The average optical axis of the optical member sheet F1 detected by the above method is applied to the optical display component P so as to form a desired angle with respect to one side of the display region P4 of the optical display component P. [ And the joining position (relative joining position) of the sheet member F11 is determined. For example, when the optical axis direction of the optical member is set at 90 degrees with respect to one side of the display region P4 according to the design specification, the average optical axis direction of the optical member sheet F1 becomes the display region The sheet piece F11 is bonded to the optical display component P so as to form 90 DEG with respect to one side of the optical display component P4.

Thereafter, the cut line WCL of the sheet piece F11 is detected by the detecting device 189 shown in Fig. 11A, and the sheet piece F11 is cut by the cutting device 184, (WCL). Thereby, the optical member FO with precisely controlled the direction of the optical axis is disposed at a desired size and a desired position. Therefore, it is possible to provide an optical display device DP having a narrow frame with excellent display quality.

13 is a schematic view of a production system 2000 of an optical display device according to the present embodiment. The production system 2000 is a production system employing a window cutting method. The production system 2000 is a joining apparatus for joining a sheet piece larger than the optical member to the optical display component P, and is provided with, for example, the joining apparatus 1 described in the first embodiment.

The production system 2000 according to the present embodiment includes a cleaning apparatus 2001, a first bonding apparatus 2002, a first cutting apparatus 2003, a second bonding apparatus 2004, a second cutting apparatus 2005, a peeling apparatus 2006, a third bonding apparatus 2007, a third cutting apparatus 2008, and a testing apparatus 2009. [

The cleaning device 2001, the first bonding device 2002, the second bonding device 2004, the peeling device 2006, the third bonding device 2007 and the inspection device 2009 are the same as the cleaning device 2001 of the sixth embodiment, The first bonding apparatus 1002, the second bonding apparatus 1003, the peeling apparatus 1004, the third bonding apparatus 1005, and the inspection apparatus 1006, respectively.

However, in the first joining apparatus 2002, the second joining apparatus 2004 and the third joining apparatus 2007, a sheet piece slightly larger than the objective optical member is bonded to the optical display component P.

The first cutting device 2003 and the second cutting device 2005 and the third cutting device 2008 have the same configuration as the cutting device 184 and the detecting device 189. [ That is, in the first cutting device 2003, the second cutting device 2005, and the third cutting device 2008, the optical display component P (in which the sheet pieces F11 are joined) ) Is picked up by the image pickup device, and a surplus portion of the sheet is cut based on the picked-up image data. Thus, it is possible to provide a narrow-frame optical display device having excellent display quality.

While the preferred embodiments of the present invention have been described with reference to the accompanying drawings, it is needless to say that the present invention is not limited to these examples. Various shapes, combinations, and the like of the respective constituent members shown in the above-described examples are merely examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

According to the bonding apparatus, the production system of the optical display device, the bonding method, and the production method of the optical display device according to the present invention, it is possible to provide a bonding apparatus, a bonding method, Can be provided.

1, 2, 3 and 4: joining device, 11: winding part, 12: cut part, 13: seat stage, 14: joining stage, 15: joining head, 15a: retaining surface, 16: head driving device, 17: A first nip roll 18b a second nip roll 19 a head device 50 a control device F1 optical member sheet F11 sheet member F1a optical member main body F2a adhesive layer , F3: separator sheet, F4a: surface protective film, F5: bonding sheet, F6: polarizer, F7: first protective film, F8: second protective film, P: optical display part, R1: , 1000, 2000: optical display device production system

Claims (11)

A joining apparatus for joining a sheet piece to an optical display component,
A winding unit for winding the optical element sheet together with the separator sheet from the master roll,
A cut portion for forming the sheet piece by cutting the optical member sheet while remaining the separator sheet;
A sheet stage for supporting the separator sheet to which the sheet piece is attached,
A bonding stage for holding the optical display component;
Wherein the holding member is provided with a curved holding surface for holding the sheet piece so that the sheet piece is rotated while contacting the holding surface with the sheet piece supported from the separator sheet side by the sheet stage, A joining member capable of joining to the optical display component by rolling while contacting the sheet piece held on the holding surface with the optical display component held on the joining stage;
A winding operation for winding the separator sheet that has passed through the sheet stage to a separator roll and a separating operation for separating the separator sheet from the separator sheet by releasing the separator sheet wound on the separator roll in a predetermined period immediately after the holding operation of the sheet is started And a separating mechanism for separating the separator sheet,
And a connecting device for connecting the connecting device. The apparatus according to claim 1,
A winding unit for holding the separator roll and capable of performing the winding operation and the releasing operation;
And a nip roll portion capable of performing the winding operation and the unwinding operation in synchronization with the winding portion
And wherein the connecting portion is formed of a metal. The apparatus according to claim 1,
And a winding portion for holding the separator roll and capable of performing the winding operation and the releasing operation. The joining apparatus according to any one of claims 1 to 3, further comprising a pressing member for pressing the separator sheet from which the sheet strip is peeled from above, during the holding operation. 5. The sheet feeding apparatus according to any one of claims 1 to 4, further comprising: a detecting section for detecting a relative position of the sheet member held by the joining member to the joining member;
And control means for controlling the relative position of the optical display component held on the bonding stage with respect to the bonding member holding the sheet piece on the basis of the detection result of the detection portion
And a connecting device for connecting the connecting device. The optical sheet according to any one of claims 1 to 5, further comprising detection means for detecting a defect mark displayed on the optical member sheet,
Wherein the joining member holds the portion where the defect mark of the optical member sheet is detected on the holding surface and conveys it to the waste position. An optical display device production system comprising an optical member and an optical member joined to each other,
And a joining device for joining the sheet piece as the optical member to the optical display component,
The joining apparatus is the joining apparatus according to any one of claims 1 to 6. A production system of an optical display device. An optical display device production system comprising an optical member and an optical member joined to each other,
A joining device for joining a larger sheet piece to the optical display part than the optical member,
A detection device for picking up the optical display part to which the sheet piece is bonded and for detecting a cut line of the sheet piece based on the picked-up image data;
And a cutting device for cutting the optical member from the sheet piece by cutting the sheet piece bonded to the optical display part along the cut line
Wherein the joining apparatus is the joining apparatus according to any one of claims 1 to 6. A joining method for joining a sheet piece to an optical display part,
An extracting step of separating the optical member sheet from the original roll together with the separator sheet,
A cutting step of forming the sheet piece by cutting the optical member sheet while remaining the separator sheet;
A holding step of holding the sheet piece on the holding surface by rolling the joining member while bringing the holding surface of the joining member into contact with the sheet piece supported from the side of the separator sheet by the sheet stage,
A joining step of joining the sheet piece to the optical display part by rolling the joining member while bringing the sheet piece held on the holding surface into contact with the optical display part held on the joining stage,
A winding step of winding the separator sheet that has passed through the sheet stage onto a separator roll,
A releasing step of loosening the separator sheet so that the separator sheet is loosened from the separator sheet by releasing the separator sheet wound on the separator roll in a predetermined period immediately after the sheet piece holding operation is started,
≪ / RTI > 1. A production method of an optical display device comprising an optical member and an optical member,
And a joining step of joining the sheet member as the optical member to the optical display component,
The joining step is carried out using the joining method according to claim 9. 1. A production method of an optical display device comprising an optical member and an optical member,
A bonding step of bonding a sheet piece larger than the optical member to the optical display part;
A detecting step of picking up the optical display part to which the sheet piece is bonded and detecting a cut line of the sheet piece based on the picked-up image data;
And cutting the sheet piece joined to the optical display part along the cut line to cut the optical member from the sheet piece
Wherein the joining step is performed using the joining method according to claim 9.

Images