TWI647090B - Method for attaching an optical film to an optical display unit - Google Patents

Abstract

Provided is a method which can be easily applied even when an optical film is bonded to a small-sized optical display panel, and is capable of performing high-efficiency bonding.

In the present method, a cell assembly mother plate and an optical film laminate roll are used, and the cell assembly mother plate is formed by a plurality of rectangular optical display units having terminal portions formed on one side thereof. The optical film laminate roll is optically disposed in a state in which the edge portions of the terminal portions are in the lateral direction and the optical display surface faces upward, at least in the longitudinal direction and arranged side by side in the substrate. a continuous strip-shaped optical film laminate in which a carrier film is bonded to each other via a pressure-sensitive adhesive layer is wound into a roll, and the optical film includes at least a master substrate provided in the unit assembly The optical display unit arranged in the vertical direction is a layer of a wide polarizing element corresponding to a width in the lateral direction other than the terminal portion in the arrangement state. The method comprises the steps of: feeding the unit assembly main body to the bonding position; and discharging the optical film laminate from the optical film laminate body and feeding it to the bonding position; and The optical film and the adhesive layer of the optical film laminate to be fed are vertically aligned with the optical display unit arranged in the longitudinal direction on the unit assembly mother board. a spacing corresponding to the longitudinal direction of the dimension to sequentially form the cut-in portion in the lateral direction and form a plurality of optical film sheets supported on the carrier film via the adhesive layer; and at the bonding position The optical film sheet is peeled off from the carrier film while the adhesive layer is left on the optical film side, and the peeled optical film sheet is sequentially attached to the moving direction. The stage on the area of the optical display surface of the optical display unit of the unit assembly main board which is arranged in the longitudinal direction except for the terminal portion.

Description

Method for attaching an optical film to an optical display unit

The present invention relates to a method of laminating an optical film sheet at an optical display unit such as an organic EL display unit or a liquid crystal display unit. In particular, the present invention relates to a method of sequentially attaching an optical film sheet to a plurality of optical display units having a rectangular shape in which a terminal portion having an electrical terminal for electrical connection is formed.

For example, according to International Publication No. WO 2009/128241 A1 (Patent Document 1), it is known that an optical film including a polarizing element which is formed into a continuous strip shape having a specific width is fed from the roll of the optical film. And cut into a specific length, and the cut sheet of the optical film is sequentially attached to the liquid crystal display unit sequentially sent to the bonding position, thereby forming a roll-to-panel (RTP) ) The method and method of bonding.

The well-known method is suitable for use in, for example, a liquid crystal display unit for a television or a liquid crystal display unit for a personal computer, which is generally large in size and has rigidity, and is cut off as compared with the prior art. Sheet-sized optical film sheets are attached one at a time The method on the display unit is considered to be advantageous in that it is possible to improve the efficiency of the manufacturing process, and has a tendency to be widely adopted. However, this method is inconvenient if it is to be applied to an optical film for an optical display panel of a smaller size such as a smart phone or a small tablet computer, and there is still practical use. There is room for improvement. Further, in the case where the organic EL display unit is generally thin and can have a flexible optical display unit, it is difficult to perform the optical film by the method described in Patent Document 1 due to the flexibility thereof. Fit, not practical. In particular, when the organic EL display unit is generally a small size for a smart phone or a small tablet computer, it is desirable to apply the method described in Patent Document 1 above to perform the bonding of the optical film sheets. It is not easy.

Korean Patent Application Publication No. 10-1174834 (Patent Document 2) is known as a method of industrially producing an organic EL display unit having a small screen size. According to the method described in Patent Document 2, a resin film is formed on a glass substrate, and the resin film is used as a substrate for forming a film-form display unit. Thereafter, on the substrate, a plurality of display units arranged in a plurality of columns in the vertical and horizontal directions are formed, and the entire surface is covered with an engineering film, and then the substrate on which the display unit is formed is formed from the glass substrate. Stripped. Thereafter, in a state in which the engineering film is bonded, each of the film-shaped display units is separated, and each of the film-shaped display units is formed on one of the electrical terminals for electrical connection. The terminal portion will be exposed to the point where the terminal portion corresponds to the project The film is peeled off, whereby each film-shaped display unit is formed.

Patent Document 2 discloses a method for manufacturing a thin film-shaped optical display unit having a rectangular terminal portion formed with an electrical terminal for electrical connection on one side, but The bonding of the optical film of the optical display unit, for example, the bonding of the optical film including the polarizing element, is not taught at all. However, in the case of a liquid crystal display unit, in order to perform image display, it is necessary to attach an optical film including a polarizing element to the unit, and in the case of an organic EL display unit, in order to suppress internal reflection, It is necessary to bond a circularly polarizing plate in which a retardation film is laminated on a polarizing element to a unit.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] International Publication WO2009/128241A1

[Patent Document 2] Korean Patent Application Publication No. 10-1174834

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2007-157501

[Patent Document 4] Japanese Patent Laid-Open Publication No. 2013-63892

[Patent Document 5] Japanese Patent Laid-Open Publication No. 2010-13250

[Patent Document 6] Japanese Patent Laid-Open Publication No. 2013-35158

[Patent Document 7] International Publication WO2009/104371A1

[Patent Document 8] Japanese Patent Application No. 2013-070787

[Patent Document 9] Japanese Patent Application No. 2013-070789

[Patent Document 10] Japanese Patent No. 5204200

[Patent Document 11] Japanese Patent No. 5448264

The present invention can be easily applied even when an optical film is attached to an optical display panel having a small size such as a smart phone or a small tablet, and can be highly affixed. The method of the matter is the subject that should be solved.

Another object of the present invention is to provide a method of easily bonding an optical film sheet by a roll-to-face (RTP) method even if the optical display unit is a flexible flexible sheet structure.

In one aspect of the invention, there is provided a method of laminating an optical film sheet for a rectangular display optical display unit having a terminal portion having an electrical terminal for electrical connection formed on one side, A unit assembly mother board and an optical film laminate roll are used, and the unit assembly mother board is configured to have a plurality of rectangular optical display units having terminal portions formed on one side thereof, and to have a terminal portion The optical film laminate roll is placed on the optical film in a state in which the side positions are in the lateral direction and the optical display surface is facing upward, at least in the longitudinal direction and arranged side by side in the substrate. a continuous strip-shaped optical film laminate in which a carrier film is bonded and wound into a roll In the optical film, the optical film includes at least a lateral width other than the terminal portion in an arrangement state of the optical display unit arranged in the vertical direction on the unit assembly mother board. Corresponding layers of wide polarizing elements.

The method includes a step of sequentially feeding a plurality of unit assembly mother sheets to a bonding position; and discharging the optical film laminate from the optical film laminate to be sent to the bonding position And the optical film and the adhesive layer of the optical film laminate which are sent out, and the optical display unit arranged in a longitudinal direction on the unit assembly mother board in a state of being arranged The lower longitudinal dimension corresponds to the interval in the longitudinal direction, and the notch is sequentially formed in the lateral direction, and a plurality of optical film sheets supported on the carrier film via the adhesive layer are formed; And at the bonding position, the optical film sheet is peeled off from the carrier film in a state where the adhesive layer remains on the optical film side, and the peeled optical film sheet is sequentially attached to the feeding film. The direction in which the optical display unit of each of the optical display units arranged in the longitudinal direction is arranged in the direction of the optical display surface other than the terminal portion.

Further, in this method, the optical film sheet is formed on the optical display unit located in front of the optical display unit arranged in the longitudinal direction on the unit assembly mother board when viewed from the longitudinal direction. Before the bonding, the lateral position and the azimuth angle of the unit assembly main body with respect to the feeding direction are adjusted, and the optical display unit is horizontally opposed to the optical film sheet sent to the bonding position. square The positional integration is performed on the orientation and the azimuth angle, and the front end of each optical film and the corresponding optical display unit on the unit assembly mother board are adjusted by adjusting the feeding of the unit assembly mother board. The front ends are aligned with each other.

In another aspect of the present invention, instead of forming a notch in the lateral direction in which the optical film sheet is formed, the optical film sheet is left in a state where the adhesive layer remains on the optical film side at the bonding position. The optical film is peeled off from the carrier film, and the peeled optical film is continuously bonded to a plurality of optical display units arranged in a longitudinal direction on the unit assembly mother board that moves in the feeding direction. The stage on the area of the optical display surface other than the terminal portion. Thereafter, the plurality of optical display units on the unit assembly mother board to which the optical film is continuously bonded are cut away into individual units and simultaneously attached at the longitudinal end of the optical display unit. The aforementioned optical film at the respective units is cut.

In any of the forms, it can be configured such that, in the unit assembly mother board, a plurality of the optical display units are arranged in a vertical direction, and are arranged in a plurality of parallel rows. The optical display unit included in the column is bonded to the optical film sheet. In this case, the bonding of the optical film sheets to the optical display units included in the respective columns arranged in parallel may be sequentially performed in a row.

Further, in a form in which an optical film sheet cut into a specific size in advance is bonded to an optical display unit, a plurality of optical display units on the unit assembly mother board can be configured as By The longitudinal direction of the plurality of optical display units is arranged side by side in a row arrangement on a plurality of rows, in the first column in the longitudinal direction of the right end or the left end when viewed from the feeding direction After the optical film sheets are bonded to the optical display unit at the leading end of the feeding direction, the unit assembly main body is moved in the lateral direction and the rear direction, and the longitudinal direction adjacent to the first row in the longitudinal direction is made. The front end of the optical display unit at the leading end of the second row in the feeding direction is aligned with the leading end of the optical film sheet sent to the bonding position, and the optical film sheet of the optical display unit is bonded. The same bonding is performed, and if the bonding of the optical film sheets by the optical display unit of the row at the front end of all the columns is completed, the unit assembly mother board is advanced in the feeding direction by In the same operation, the bonding of the optical film sheets of the optical display unit positioned in the second row of each column is performed in the same manner, and the same operation is performed in the same manner. The bonding of the optical film sheets of all the optical display units on the body mother board.

In any of the above aspects of the present invention, the base material can be made flexible, and in this case, the base material is preferably formed of a heat resistant resin material. Alternatively, the substrate may be a flexible ceramic sheet or a flexible glass sheet. By forming the substrate with a heat-resistant material, the substrate is not damaged by the high heat generated when the optical display unit is manufactured. Further, the display unit may be an organic EL display unit or a liquid crystal display unit.

Further, in any of the above aspects of the present invention, the optical film can be bonded to the polarizer by the polarizing element and The phase difference film on the piece is formed. In this case, the optical film is configured such that the retardation film is positioned on the side facing the adhesive layer, and the retardation film is bonded to the optical display surface of the optical display unit. Further, preferably, the absorption axis of the polarizing element and the slow phase axis of the retardation film are arranged to intersect each other at an angle within a range of 45° ± 5°. Furthermore, it is preferable that the absorption axis of the polarizing element is arranged parallel to the longitudinal direction of the optical film, and the retardation axis of the retardation film is arranged obliquely to the oblique direction with respect to the longitudinal direction of the optical film. In this case, the retardation film can be a reverse dispersion film which is smaller in phase difference with respect to the short-wavelength light than the phase difference of the long-wavelength light.

In another aspect of the present invention, there is provided a method of forming an optical display unit having a rectangular shape and a flexible flexible sheet having a terminal portion having an electrical terminal for electrical connection formed on one side. In the case of bonding an optical film sheet, a unit mother board and an optical film laminate roll are used, and the unit mother board is formed in a rectangular shape in which a terminal portion having an electrical terminal for electrical connection is formed on one side. The optical display unit having a flexible flexible sheet structure is disposed on the resin substrate in a state in which the side portion including the terminal portion is in the lateral direction and the optical display surface is facing upward, and the optical film layer is disposed on the resin substrate. The integrated film is obtained by winding a continuous strip-shaped optical film laminate in which a carrier film is bonded to an optical film via an adhesive layer, and the optical film is at least included An optical display unit arranged on the unit mother board is a layer of a wide polarizing element corresponding to a width in the lateral direction other than the terminal portion in the arranged state.

The method comprises the steps of sequentially feeding a plurality of unit mother boards to a bonding position; and discharging the optical film laminate from the optical film laminate to a stage where the optical film laminate is fed to the bonding position And the distance between the optical film and the adhesive layer of the optical film laminate to be fed, in the longitudinal direction corresponding to the longitudinal dimension of the optical display unit on the unit mother board in the arrangement state Forming a cut-out portion in the lateral direction and forming an optical film sheet supported on the carrier film via the adhesive layer; and sticking to the optical film side at the bonding position In the state of the agent layer, the optical film sheet is peeled off from the carrier film, and the peeled optical film sheet is bonded to the optical display unit on the unit mother board that moves in the feeding direction, except for the terminal portion. The stage of the optical display surface area. Further, before the optical film sheet is bonded to the optical display unit on the unit mother board, the lateral position and the azimuth angle of the unit mother board with respect to the feeding direction are adjusted, and the optical display unit is The position is integrated in the lateral direction and the azimuth angle with respect to the optical film sheet sent to the bonding position, and the front end of each optical film is adjusted by adjusting the feeding of the unit mother board. The front ends of the corresponding optical display units on the mother board of the unit are aligned with each other.

In still another aspect of the present invention, the bonding of the optical film to the display unit is performed instead of the vertical direction of the display unit, and the optical film is bonded in the lateral direction. In this aspect, the optical display unit is attached to the optical display unit having a rectangular shape in which a terminal portion having an electrical terminal for electrical connection is formed on one side. In the film sheet, a unit assembly mother board and an optical film laminate roll are used, and the unit assembly mother board is configured as a plurality of rectangular optical display units having terminal portions formed on one side thereof. The optical film laminate roll is optically disposed in a state in which the edge portions of the terminal portions are in the lateral direction and the optical display surface faces upward, at least in the longitudinal direction and arranged side by side in the substrate. a continuous strip-shaped optical film laminate in which a carrier film is bonded via an adhesive layer on a film is wound into a roll, and the optical film includes at least a unit assembly on the unit assembly Further, a layer of a wide polarizing element corresponding to a longitudinal dimension of the plurality of optical display units arranged in a longitudinal direction is arranged.

The method includes the step of sequentially feeding a plurality of unit assembly mother sheets to the bonding position; and discharging the optical film laminate from the optical film laminate to be sent to the bonding position And the optical film and the adhesive layer for the optical film laminate to be fed, in the longitudinal direction at intervals of the longitudinal direction corresponding to the lateral direction of the optical display unit except the terminal portion Forming a cut-out portion sequentially, and forming a stage of the optical film sheet supported on the carrier film via the adhesive layer between the two adjacent portions in the lateral direction; and bonding At the position, the optical film sheet is peeled off from the carrier film in a state where the adhesive layer remains on the optical film side, and the peeled optical film sheet is continuously bonded to the horizontal direction. a stage on the area of the optical display surface other than the terminal portion of the column of the optical display unit arranged in the longitudinal direction on the unit assembly mother board; and the unit assembly body to which the optical film sheet is to be attached On board Multiple optical display unit cut Divided into individual units, and at the same time in the longitudinal end of the optical display unit, the optical film to be bonded to each unit is cut off.

Further, in this method, in the same manner as the above-described method, the optical light is located in front of the optical display unit arranged in the longitudinal direction on the unit assembly mother board when viewed from the lateral direction. Before the display unit performs the bonding of the optical film sheets, the vertical position and the azimuth angle of the unit assembly main body are adjusted, and the optical display unit is formed with respect to the optical film sheet fed to the bonding position. The positional integration is performed in the longitudinal direction and the azimuth angle, and the front end of each optical film and the unit assembly body are adjusted by adjusting the feeding of the unit assembly mother board and the feeding of the optical film sheet. The front ends of the regions of the optical surfaces of the corresponding optical display units on the board are aligned with each other.

In another aspect of the present invention, after the plurality of optical films are bonded to the optical display unit, the longitudinal direction is cut. In this aspect, the step of sequentially feeding the plurality of unit assembly mother sheets to the bonding position is performed, and the optical film laminate is rolled from the optical film laminate and sent to the bonding. At the position of the position; and at the bonding position, the optical film sheet is peeled off from the carrier film in a state where the adhesive layer remains on the side of the optical film, and the peeled optical film is continuously attached And a stage on an area of the optical display surface other than the terminal portion of the plurality of optical display units arranged in the longitudinal direction on the unit assembly mother board that moves in the feeding direction; and Fitted to an optical display unit on a unit assembly mother board to which an optical film is attached The end portion of the transverse direction, the optical film is cut and formed into an optical film sheet; and the plurality of optical display units on the unit assembly mother board to which the optical film sheet is continuously bonded are individually cut away from each other The unit is simultaneously cut at the longitudinal end of the optical display unit at the stage where the optical film at the respective unit is cut. In this method, in particular, it is preferable that the terminal portion is positioned at the feeding end of the optical film in the lateral direction.

Further, in another aspect of the present invention, a plurality of optical film laminates are used. In this embodiment, a plurality of optical film laminate rolls are used, and the plurality of optical film laminate rolls are provided with a plurality of columns of optical display units constituting a plurality of optical display units. a wide-width optical film laminate roll having a plurality of direction sizes corresponding to each other, and a continuous strip shape in which a carrier film is bonded to an optical film including a layer of at least a polarizing element via an adhesive layer. The plurality of optical film laminates are wound into a roll.

The form includes a step of sequentially feeding a plurality of unit assembly mother sheets to a bonding position, and a plurality of optical film laminates are wound from the plurality of optical film laminates and sent to a sticker. a phase at a position; and an interval between the optical film and the adhesive layer of the plurality of optical film laminates to be fed, in a longitudinal direction corresponding to a lateral direction other than the terminal portion of the optical display unit A slit portion is sequentially formed in the longitudinal direction, and an optical film sheet supported on the carrier film via the adhesive layer is formed between the two adjacent portions that are adjacent to each other in the longitudinal direction. Stage; and at the bonding position, there is stickiness on the side of the optical film In the state of the coating layer, a plurality of optical film sheets are peeled off from the carrier film, and the plurality of peeled optical film sheets are continuously bonded to the unit assembly mother board which is moved in the lateral direction. a portion of a plurality of optical display units arranged in a longitudinal direction, a portion of the optical display surface other than the terminal portion, and a unit assembly mother board to which the optical film sheet is to be attached The plurality of optical display units are cut away from the respective units, and at the same time, at the longitudinal end of the optical display unit, the optical film to be bonded to each unit is cut off. In this method, preferably, the bonding positions of at least a part of the plurality of optical film laminate rolls are different in the lateral direction, and more preferably, the plurality of optical film layers adjacent in the longitudinal direction are adjacent. The bonding positions of the integrated rolls are in the horizontal direction and are different from each other.

Further, in still another aspect of the present invention, the optical film laminate roll having a wide width corresponding to the longitudinal direction of the partial row is used, and the film is sequentially attached in a partial row. Hehe. In this embodiment, an optical film laminate roll is used, which is a continuous strip-shaped optical film laminate roll in which a carrier film is bonded to an optical film via an adhesive layer. In the form of a roll, the optical film is provided with at least a wide polarized light corresponding to one of a plurality of partial rows of a plurality of optical display units constituting a plurality of optical display units. The layer of components.

This embodiment includes a step of sequentially feeding a plurality of unit assembly mother sheets to the bonding position, and ejecting the optical film laminate from the optical film laminate to be sent to the bonding position. Stage; and for The optical film and the adhesive layer of the optical film laminate which are fed out are formed with slits in the longitudinal direction at intervals in the longitudinal direction corresponding to the lateral direction of the optical display unit except the terminal portion. And forming a stage of the optical film sheet supported on the carrier film via the adhesive layer between the two adjacent portions in the longitudinal direction; and at the bonding position, in the optical In the state in which the adhesive layer is left on the film side, the optical film sheet is peeled off from the carrier film, and the peeled optical film sheet is bonded to the unit assembly on the mother board which is moved in the lateral direction. In the region of the optical display surface other than the terminal portion of the optical display unit in the longitudinal direction, and by changing the position in the longitudinal direction between the optical film sheet and the unit assembly main body, a stage in which the partial alignment is performed in a stepwise manner; and the plurality of optical display units on the unit assembly mother board to which the optical film sheets are attached are cut away into individual units, and simultaneously At the longitudinal end of the optical display unit, the optical film to be bonded to each unit is cut off.

In this aspect, the optical film and the unit assembly mother board can be relatively moved in the longitudinal direction by moving the unit assembly mother board, and the optical film sheet can be moved to make the optical The film sheet and the unit assembly mother board are relatively moved in the longitudinal direction.

According to the above aspect of the present invention using the cell assembly mother board, it is possible to provide light including the polarizing element to a plurality of optical display units arranged in a row in the longitudinal direction on the substrate. Since the film is bonded sequentially or continuously, even for a small-sized optical display unit, it is possible to apply a roll-to-panel (RTP) method for efficient bonding. Further, since the alignment between the unit and the optical film sheet is performed by adjustment of the unit assembly mother board, the position adjustment system becomes easier as compared with the case where the position of the unit is individually adjusted. And the adjustment accuracy is also improved.

Further, in an aspect of the invention in which an optical film sheet is bonded to an optical display unit having a flexible flexible sheet structure, the optical display unit is disposed on a hard resin substrate by using the substrate The position adjustment enables the alignment between the optical display unit and the optical film to be performed, and the alignment can be performed with high precision.

Further, in any of the optical display units, since the terminal portion of the optical display unit is in the horizontal direction with respect to the feeding direction and is sent to the bonding position, it is possible to avoid the optical display unit. The terminal partially conforms to the optical film. Therefore, it is not necessary to perform the work of peeling off the film at the place where the terminal portion is covered after bonding the optical film as described in FIG. 7 of Patent Document 2.

I‧‧‧ Position Adjustment Station

II‧‧‧Surface protection film stripping station

III‧‧‧First Surface Inspection Station

IV‧‧‧Polarized component laminate bonding station

V‧‧‧2nd surface inspection station

VI‧‧‧ cut off station

W‧‧‧ wide width in the horizontal direction

L‧‧‧length in the longitudinal direction

B‧‧‧unit assembly body board

1‧‧‧Optical display unit

1a‧‧‧ Short side

1b‧‧‧Longside

1c‧‧‧Terminal part

1d‧‧‧Display section

3‧‧‧ glass substrate

4‧‧‧Substrate

5‧‧‧Surface protection film

6‧‧‧Back protective film

7‧‧‧ Motherboard transfer station

8‧‧‧ Motherboard position adjustment plate

10‧‧‧Adhesive retention tray

10a‧‧‧Attraction hole

12‧‧‧Base position of the unit assembly body board

20‧‧‧Mechanism

21‧‧‧Optical film

21a‧‧‧Polarized elements

21c‧‧1/4 wavelength retardation film

21e‧‧‧ Carrier film

21f‧‧‧Optical film sheet

22‧‧‧Optical film roll

28‧‧‧cutting department

28a‧‧‧cutting department

29‧‧‧ cutting blade

38‧‧‧Finishing roller

39‧‧‧ Carrier film peeling mechanism

46‧‧‧vacuum suction station

47‧‧‧cutting template

47a‧‧‧cutting trench

47b‧‧‧Vacuum suction hole

48‧‧‧ cutting blade

49‧‧‧vacuum suction source

Fig. 1 is a schematic view showing the overall configuration of an optical film lamination system comprising one of the embodiments for carrying out the optical film bonding method according to the present invention.

[Fig. 2] is for enabling one of the embodiments of the present invention One example of an optical display unit used in the method is a plan view.

FIG. 3 is a perspective view schematically showing an example of a manufacturing process of an organic EL display unit.

Fig. 4 is a plan view showing an example of a unit assembly mother board used in the method of the present invention, wherein (a) is a plan view and (b) is a cross-sectional view.

[Fig. 5] is a display for the operation at the position adjustment station, and (a) and (b) are actions for moving the unit assembly mother board from the mother board transfer table to the mother board position adjustment plate. Show, (c) shows the action of adjusting the position of the motherboard.

Fig. 6 is a schematic view showing the operation at the transfer position of the mother board.

Fig. 7 is a plan view showing a reference position of a unit assembly mother board on a suction holding tray for bonding.

[Fig. 8] (a) and (b) are diagrams showing the transfer operation of the mother board from the mother board position adjustment dial to the bonding suction holding tray.

[Fig. 9] (a), (b), (c), and (d) are views showing various stages of the surface protective film peeling operation.

Fig. 10 is a perspective view showing a surface protective film peeling mechanism.

Fig. 11 is a schematic view showing an optical film attaching device.

Fig. 12 is a cross-sectional view showing a film laminate in which a carrier film is bonded to an optical film.

[Fig. 13] (a), (b), (c), (d), (e) are the bonding order of the optical film on the unit assembly mother board by one embodiment of the present invention. A sketch of the display.

Fig. 14 is a perspective view showing an example of a cutting device used at a cutting station.

Fig. 15 is a schematic view showing a conveying mechanism for conveying a display unit to be cut.

[Fig. 16] (a), (b), and (c) are schematic views showing a bonding procedure of an optical film on a unit assembly mother board according to another embodiment of the present invention.

FIG. 17 is a perspective view showing an example of bonding of an optical film in an embodiment in which the display unit is arranged in a vertical column.

Fig. 18 is a plan view showing an example of a unit mother board used for bonding an optical film to a display unit having a large flexible sheet structure.

Fig. 19 is a perspective view showing the bonding operation of the optical film performed on the unit mother board shown in Fig. 18.

Fig. 20 is a schematic view showing an optical film bonding apparatus according to another embodiment of the present invention.

[Fig. 21] (a), (b), and (c) are schematic views showing the bonding order of the optical films on the unit assembly mother board by the embodiment shown in Fig. 20.

Fig. 22 is a schematic view showing an optical film bonding apparatus according to another embodiment of the present invention.

[Fig. 23] (a), (b), (c), and (d) show the bonding order of the optical films on the unit assembly mother board caused by the embodiment shown in Fig. 22 Schematic diagram.

Fig. 24 is a schematic view showing an optical film bonding apparatus according to another embodiment of the present invention.

[Fig. 25] (a), (b), (c), (d), (e) are stickers for the optical film on the unit assembly mother board due to the embodiment shown in Fig. 24. A schematic diagram showing the sequence.

Fig. 26 is a schematic view showing an optical film bonding apparatus according to another embodiment of the present invention.

[Fig. 27] (a), (b), (c), (d), (e) are stickers for the optical film on the unit assembly mother board caused by the embodiment shown in Fig. 26. A schematic diagram showing the sequence.

Fig. 1 is a schematic view showing the overall configuration of an optical film lamination system comprising one of the embodiments for carrying out the optical film bonding method according to the present invention. The optical film bonding system according to the present embodiment is provided with a position adjustment station I, a surface protection film peeling station II, a first surface inspection station III, and a polarizing element laminate bonding station IV, and 2 Surface inspection station V, and cut-off station VI. The optical display unit 1 is sequentially sent to each station from the station I to the station VI by a guide member having a self-propelled function that travels along the guide rail as will be described later.

In Fig. 2, an example of an optical display unit 1 that can be used in the method of one of the embodiments of the present invention is shown. The optical display unit 1 has a rectangular shape having a short side 1a and a long side 1b, and is formed with a specific wide terminal portion 1c along one of the short sides 1a. At this terminal portion 1c, a plurality of electrical terminals 2 for electrically connecting are disposed. A region other than the terminal portion 2 of the optical display unit 1 serves as the display region 1d. The display region 1d has a width W in the lateral direction and a length L in the longitudinal direction. In order to carry out the method of the present invention, the optical display unit 1 is preferably an organic EL display unit, but it is a liquid crystal as long as it is formed in a terminal portion only at one side of a rectangular shape. The display unit can also be applied to the method of the present invention.

3 is a perspective view schematically showing an example of a manufacturing process of an organic EL display unit. In this process, first, a glass substrate 3 is prepared, and on the glass substrate 3, a heat resistant resin material is compared. The resin substrate 4 is preferably formed by coating a specific thickness and drying it. As the heat resistant resin material, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC), or the like can be used in addition to the polyimide resin. In addition, as the material of the substrate, a flexible ceramic sheet as described in JP-A-2007-157501 (Patent Document 3) can be used, or it can be used in JP-A-2013- Japanese Patent Publication No. 63892 (Patent Document 4), JP-A-2010-13250 (Patent Document 5), and JP-A-2013-35158 (Patent Document) The general flexible glass described in 6). When a flexible ceramic sheet or a flexible glass is used as a substrate, it is not necessary to use the glass substrate 3.

On the resin substrate 4, a plurality of organic EL display units 1 are formed in a state in which they are arranged in a matrix shape by a known manufacturing method. Thereafter, the surface protective film 5 is bonded so as to cover the organic EL display unit 1 formed on the resin substrate 4. Next, the glass substrate 3 is peeled off from the resin substrate 4 by a known method such as laser irradiation. A technique for peeling a glass substrate from a resin substrate by laser irradiation is described in, for example, International Publication No. WO2009/104371 (Patent Document 7). The back surface protective film 6 is bonded to the resin substrate 4 on which the glass substrate 3 has been peeled off. In the description of the present embodiment, the term "unit assembly mother board B" means a layer formed of the resin substrate 4 and the display unit 1 and the back surface protective film 6 formed thereon in addition to the surface protective film. Product structure.

4(a) is a plan view showing a unit assembly mother board B to which the surface protection film 5 is not attached, and FIG. 4(b) is a cross-sectional view taken along line bb of FIG. 4, but The unit assembly mother board B in the state in which the surface protection film 5 is bonded is shown. As shown in FIG. 4(a), at the unit assembly mother board B, a plurality of optical display units 1 are formed in a state in which the terminal portion 1a is oriented in the lateral direction to constitute a vertical direction and a horizontal direction. The row is configured as a row. The unit assembly mother board B is a rectangular shape having a short side B-1 and a long side B-2 as shown in FIG. 4(a). The reference mark m serving as a reference point of the mother board B is attached to the vicinity of both ends of the short side B-1 of the middle side by printing, engraving or other appropriate method. When the optical film is bonded, the unit assembly mother board B is fed in the direction indicated by the arrow A in FIG. 4(a), that is, in the longitudinal direction.

In Figs. 5 and 6, the configuration of the position adjustment station I is shown. Fig. 5 is a schematic view showing the state of the mother board position adjustment before the bonding at the position adjusting station I. The unit assembly mother board B shown in Fig. 4 (a) is placed on the mother board transfer table 7 in a state in which the surface protection film 5 is bonded thereto, and is oriented as indicated by an arrow A. The feeding direction is fed and reaches the lower position of the mother board position adjusting plate 8. The mother board position adjusting dial 8 is configured as a vacuum suction tray having a plurality of suction holes (not shown) on the lower surface and connected to a vacuum suction device (not shown), and is capable of being oriented. The composition of moving up and down. Further, the mother board position adjusting dial 8 is supported so as to be movable in the lateral direction and the vertical direction with respect to the feeding direction, and is capable of being able to perform the rotation position, that is, the azimuth direction. The composition of the position adjustment.

If the unit assembly mother board B placed on the mother board transfer table 7 reaches the position below the mother board position adjustment dial 8, the mother board position adjustment dial 8 is as shown in Fig. 5(a). Generally, the lower side is moved until the lower surface thereof contacts the surface protective film 5 of the unit assembly mother board B on the mother board transfer table 7, and the vacuum suction device is operated at this position to attract by vacuum. Force and adsorption unit assembly body B. In this state, the mother board position adjusting dial 8 is lifted upward from the mother board transfer table 7, and is sent to the mother board position detecting portion shown in FIG. 5(b). At the mother board position detecting portion, an optical reading device 9 for reading the reference mark m on the mother board B is disposed, and the device 9 reads the reference mark m on the mother board B and judges the mother board. The location of B.

Fig. 5(c) is a schematic diagram showing an exemplary display of the position AP of the unit assembly mother board B and the reference position RP of the mother board B. By reading the comparison between the position AP and the reference position RP, the displacement amounts d1 and d2 in the lateral direction and the displacement amounts d3 and d4 in the longitudinal direction at the positions of the left and right reference marks m are calculated and calculated. The amount of displacement is stored in a memory means (not shown). Next, the mother board position adjusting dial 8 is sent to the transfer position where the bonding suction holding tray 10 stands by.

Figure 6 is a schematic diagram showing the action at the reload position. At the transfer position, the mother board position adjustment dial 8 is based on the calculated displacement amounts d1, d2, d3, and d4 that are stored in the memory means so that the displacement amount becomes zero, and The position of the plate position adjustment dial 8 in the longitudinal and lateral directions and the rotational orientation are adjusted. The attraction holding tray 10 is a rectangular shape having a short side 10a and a long side 10b as shown in a plan view in Fig. 7, and is printed at the vicinity of both end portions of one of the short sides. Imprinting or other appropriate method, with a reference mark n that is useful to represent one of the reference points. At the transfer position, an optical reading device that reads the reference mark n of the bonding holding holding tray 10 and detects the position of the bonding suction holding tray 10 is disposed. Set 11.

As shown in Fig. 7, the suction holding tray 10 for bonding is formed with a plurality of suction holes 10a formed in a vertical and horizontal direction, and the suction holes 10a are held by the suction for bonding. The inner cavity of the disk 10 is connected to a vacuum suction device (not shown). The position shown by the broken line 12 in Fig. 7 is the reference position of the unit assembly mother board B on the bonding holding tray 10 for bonding. Similarly to the mother board position adjusting disk 8, the bonding holding holding disk 10 is supported by a positional adjustment in the lateral direction and the vertical direction and an azimuth adjustment in the rotation direction. Further, at the transfer position, the bonding holding tray 10 is placed by the optical reading device 11 so that the position of the reference mark n is read and associated with the unit assembly B of the unit assembly. Adjusting the content described is the same to adjust the position to the reference position. In this state, the unit assembly mother board B, which is adjusted to the reference position at the transfer position, is made above the dotted line 12 of the attraction holding holding tray 10 adjusted to the reference position. The state of the alignment.

In this state, the mother board position adjusting dial 8 of the unit assembly mother board B is moved downward until the lower surface of the unit assembly mother board B comes into contact with the upper surface of the bonding suction holding tray 10. Next, the vacuum suction device connected to the bonding suction holding tray 10 is operated, and the operation of the vacuum suction device connected to the mother board position adjusting disk 8 is stopped. As a result, the unit assembly mother board B is positioned at the reference position indicated by the broken line 12 on the bonding suction holding tray 10, and is vacuum-sucked and held by the bonding suction holding tray 10. The state on the top. In other words, the unit assembly mother board B is transferred from the mother board position adjustment dial 8 to the bonding suction holding tray 10. Thereafter, the mother board position adjusting dial 8 that releases the unit assembly mother board B is separated from the bonding suction holding tray 10 and moved upward, and the same operation is repeated.

The bonding holding tray 10 for holding the unit assembly mother board B at a specific position is then sent to the surface protective film peeling station II. Fig. 9 is a schematic view showing the configuration of a peeling device at the surface protective film peeling station II. The bonding holding tray 10 is also supported by the support mechanism 13 so as to be able to adjust the position and the rotational direction in the lateral direction and the longitudinal direction described above. The support mechanism 13 is capable of attracting the bonding. A lifting mechanism (not shown) is provided to hold the disk 10 up and down in the vertical direction. The support mechanism 13 is supported by a guide member 15 that travels along the guide rail 14, and the guide member 15 can be configured as a self-propelled device including a linear motor (not shown).

At the surface protective film peeling station II, the peeling adhesive tape driving device 16 is disposed above the guide rail 14. The peeling adhesive tape driving device 16 is provided with a tape feeding roller 16a, a tape winding roller 16b, and a pair of pressing rollers 16c, such that the peeling adhesive tape 16d is fed from the tape roller 16a. In the state in which the adhesive surface is directed downward, the lower side of the pair of pressing rollers 16c is passed to the winding roller 16b, and is disposed. The pair of pressing rollers 16c are at a specific height lower than the feeding roller 16a and the winding roller 16b. The degree is arranged in the direction in which the guide rails 14 extend, that is, in the feeding direction of the unit assembly mother board B, with a space therebetween. Although not shown, these pressing rolls 16 are preferably configured to be pressed downward by an elastic means such as a spring.

The unit assembly mother board B on the attraction holding holding tray 10 supported by the guiding member 15 and the support mechanism 13 is fed to the surface protective film at the position shown in Fig. 9(a). At the peeling position, and at the position shown in Fig. 9(b), the lifting mechanism is used to rise all the way to a certain height. This specific height is such a height that the upper surface of the surface protective film 5 of the unit assembly mother board B can be brought into contact with the adhesive tape 16d positioned between the pair of pressing rolls 16c with a specific contact pressure.

The unit assembly mother board B that has been raised to a certain height by the elevating mechanism is sent to a position below the peeling adhesive tape driving device 16 while maintaining the state. Here, the upper surface of the surface protective film 5 of the mother board B is brought into contact with the adhesive surface of the adhesive tape 16d positioned between the pair of pressing rolls 16c in a pressed state. The adhesive force of the adhesive tape 16d to the surface protective film 5 is larger than the adhesion of the surface protective film 5 to the optical display unit 1, so that the surface protective film 5 is attached to the adhesive tape 16d and is disposed. The optical display unit 1 on the resin substrate 4 is peeled off. The peeled surface protection film 5 is taken up together with the adhesive tape 16d by the take-up roll 16b. The mother board B after the surface protection film 5 is peeled off is at the position shown in the diagram (d) and is lowered by the lifting mechanism to the position of FIG. 9(a). The height at the time of delivery and sent to the next engineering office.

Fig. 10 is a perspective view showing an example of the specific configuration of the adhesive tape driving device 16 for peeling off, and the tape driving device 16 shown in a side view in Fig. 9 is arranged in parallel. In order not to complicate the drawing of the drawing, in FIG. 10, only the elements necessary for the marking are displayed, and the display unit or the like is omitted. The peeling of the surface protective film 5 is not limited to the form of the adhesive tape for peeling which is generally shown in FIG. 9 and FIG. 10, and may be, for example, a corner portion on the front side in the feeding direction of the surface protective film, for example. A part of the peeling is performed by the adhesive roller, and the peeling corner portion is gripped by a clamp or the like, for example, and pulled toward the oblique rear side to perform another peeling mechanism such as peeling.

The project after the surface protection film stripping project is a surface inspection project. The unit assembly mother board B on the bonding holding holding tray 10 fed from the surface protective film peeling station II is sent to the first surface inspection station by the guiding member 15 that travels along the guiding rail 14. III. At this time, the unit assembly mother board B is in a state in which the display unit 1 formed on the resin substrate 4 is exposed. For this display unit 1, an optical surface inspection is performed. As is exemplarily shown in FIG. 1, the first surface inspection station III is provided with a light source 17 that illuminates light for surface inspection, and a light-receiving unit that is received by the display unit 1 as a test object. Light receiving element 18. After the inspection, the unit assembly mother board B is sent to the bonding holding tray 10 for bonding, and is sent to the polarizing element laminate for performing the next process. Fit station IV.

In Fig. 11, one of the examples of the bonding station IV is shown. The bonding holding and holding disk 10 on which the unit assembly mother board B is placed is sent from the first surface inspection station III to the bonding station IV by the guiding member 15 that travels along the guiding rail 14 . At the bonding station IV, a mother board position detecting device 19 is provided, which optically reads the reference marks m, n of the mother board B sent to the bonding station IV. Take and generate the location information of the motherboard B. This location information is stored in the memory of the control device not shown in FIG. Next, the bonding holding holding tray 10 on which the collective mother board B is placed is moved to the bonding position, and is raised to a specific bonding height by the lifting mechanism of the support mechanism 13. The control device controls the operation of the support mechanism 13 and the guide mechanism 15 of the suction holding tray 10 for bonding.

At the bonding station IV, a bonding mechanism 20 is provided. The bonding mechanism 20 is provided with an optical film roll 22 in which a long optical film 21 is wound into a roll shape. The optical film 21 is fed from the optical film roll 22 at a constant speed by a pair of driving rollers 23. In the present embodiment, the optical film 21 is a strip-shaped polarizing film in which a protective film 21b such as a TAC film is bonded to both sides of the polarizing element 21a, and the adhesive layer 21d is interposed therebetween. The strip-shaped quarter-wavelength (λ) retardation film 21c bonded to the polarizing film is formed by lamination of the two. The carrier film 21e is bonded to the outside of the retardation film 21c via another adhesive layer 21d. Polarizing element 21a and The retardation film 21c is disposed such that the absorption axis of the polarizing element 21a and the retardation axis or the phase axis of the retardation film 21c intersect each other at an angle of 45°±5°. The optical film 21 is formed into a continuous continuous strip shape, but the width thereof is a size corresponding to the width W of the display unit disposed on the mother board B in the lateral direction.

In the case of the present embodiment, the absorption axis of the polarizing element 21a is parallel to the longitudinal direction of the polarizing element 21a, and the retardation axis of the retardation film 21c is configured to face the phase difference film. The direction in which the longitudinal direction of 21c is inclined at an angle of 45° ± 5°. In order to achieve this, it is necessary to stretch the film in the oblique direction in the manufacturing stage of the retardation film 21c. The extension of the oblique direction is described in detail in Japanese Patent Application No. 2013-070787 (Patent Document 8) and Japanese Patent Application No. 2013-070789 (Patent Document 9), and the documents cited therein can be used. A retardation film stretched by the method described in the above. In addition, as the retardation film 21c, a film having a reverse dispersion characteristic in which the phase difference is smaller depending on the wavelength on the shorter wavelength side can be used. A retardation film having a reverse dispersion property is described in Japanese Patent No. 5204200 (Patent Document 10), Japanese Patent No. 5448264 (Patent Document 11), and the like, and can be used in the method of the present embodiment. A retardation film of inverse dispersion characteristics as described in these patent applications.

Further, referring to Fig. 11, the optical film 21 which is fed from the optical film roll 22 by the pair of driving rollers 23 passes through the guide roller 24 and is capable of moving in the vertical direction by a dancer roll. 25. The guide roller 26 and the guide roller 27 are sent to the cut-in portion forming mechanism 28. The cut-in portion forming mechanism 28 is formed by the cutting blade 29 and a pair of driving rollers 30 for feeding. In the cutting portion forming mechanism 28, the driving roller 30 is stopped at the position where the cutting portion is formed, and the cutting blade 29 is operated in a state where the feeding of the optical film 21 is stopped, and the carrier film 21e remains. The cut-in portion 28a is formed only in the wide direction of the optical film 21. The interval between the cut portions 28a is a distance corresponding to the length L of each display unit 1 on the mother board B in the longitudinal direction. Therefore, the optical film is cut in the wide direction by the cut-in portion 28a, and is an optical film sheet 21f including the widthwise width W and the longitudinal direction L of the display unit. In this manner, a plurality of optical film sheets 21a are formed on the carrier film 21e, and the optical film sheets 21a are supported on the carrier film 21e and fed to the bonding position.

The floating roller 25 is elastically urged upward, and is a drive roller 23 that continuously drives the optical film 21 toward the feeding direction and stops the feeding of the optical film 21 at the time of cutting. After the cutting, only the adjustment roller that acts to adjust the film feed between the drive rollers 30 that drive one of the specific distances is performed. That is, during the stop period of the driving roller 30, the floating roller 25 is moved upward by absorbing the feed amount of the driving roller 23 by the pressing force, and when the driving roller 30 starts, Then, the tension is applied to the optical film 21 by the driving roller 30 to be moved downward in accordance with the pressing force.

a series of optical films formed by the cut-in portion 28a The sheet 21f is passed through the guide roller 31 and the guide roller 32 in a state of being supported by the carrier film 21e, and is passed through the guide roller 34 by the floating roller 33 which is constituted by the same configuration as the floating roller 25. , 35, 36, 37 are guided and sent to the fitting position.

At the bonding position, a bonding roller 38 and a carrier film peeling mechanism 39 are provided. The bonding roller 38 is movably disposed between the upper drawing position and the lower pressing position, and is supported by the front optical film sheet 21f in the continuous optical film sheet 21f supported on the carrier film 21e. When the front end is in a state of being integrated with the front end of the display unit 1 to be bonded, the front end is lowered from the upper position to the lower pressing position, and the optical film sheet 21f is pressed and attached to the mother board B. At the display unit 1 on the top, the bonding is performed.

The carrier film peeling mechanism 39 is provided with a peeling blade which folds the carrier film 21e at an acute angle at the bonding position, and peels the front optical film sheet 21f from the carrier film 21e. The way to come to work. Further, a carrier film take-up roll 40 for pulling the carrier film 21e which is folded at an acute angle is provided. The carrier film 21e peeled off from the optical film sheet 21f passes through the guide roller 41 and a pair of winding driving rollers 42, and is sent to the take-up roller 40, and is wound around the take-up roller. 40 on.

The operation of the driving roller 30 and the cutting blade 29 is controlled by the aforementioned control device not shown in Fig. 11. That is, the control device stores information about the size and position of the display unit 1 connected to the motherboard B. The control device is based on the vertical direction of the display unit 1. The information on the length L is controlled for the driving of the driving roller 30 and the operation of the cutting blade 29, and the cut portion 28a is formed on the optical film 21 at intervals in the longitudinal direction corresponding to the longitudinal direction length L of the display unit 1. . Further, at the upstream side of the bonding position, a film detecting device 43 that detects the front end of the optical film sheet 21f is provided, and information on the position of the front end of the optical film sheet 21f sent to the bonding position is supplied. Control device. The position information of the front end of the optical film sheet is stored in the control device, and the control device is based on the position information of the front end of the optical film sheet and the position information of the mother board B obtained from the suction holding tray 10 for bonding. The operation of the driving roller 30 and the winding driving roller 42 is controlled in such a manner as to correspond to the action of the suction holding tray 10 for bonding, and the front end of the optical film sheet 21f peeled off from the carrier film 21e. The adjustment is performed in such a manner as to be positionally integrated with the front end of the display unit 1 being bonded on the mother board B at the bonding position. If the position integration is achieved, the optical film sheet 21f and the mother board B are fed at a speed synchronized with each other. The bonding roller 38 is lowered to the lower pressing position, and the optical film sheet 21f is pressed and attached to the display surface of the display unit 1. In this manner, the bonding to the optical film sheet 21f of the display unit 1 is performed.

FIG. 13 is a schematic view showing an example in which the optical film sheet 21f is sequentially attached to the display unit 1 arranged in the vertical and horizontal rows on the mother board B. In this example, the bonding mechanism 20 is configured such that the position in the lateral direction of the feeding direction is fixed, and the holding plate 10 for holding the mother board B is held in a support mechanism. 13 is mounted in a manner of moving in the lateral direction. As shown in Fig. 13 (a), the position of the mother board B is initially controlled in such a manner that the display unit 1 at the front of the display unit row at the left end is positioned at the bonding position. In this state, as described above in connection with Fig. 11, the optical film sheet 21f is attached to the display portion 1d of the display unit 1 at the front of the left end row.

Then, by moving the bonding suction holding tray 10 in the lateral direction, the mother board B is displaced in the left lateral direction with respect to the feeding direction by a distance corresponding to the lateral direction of the display unit row. By this lateral displacement, as shown in Fig. 13 (b), the front display unit 1 of the second column from the left is positioned at the fitting position. Thereafter, the optical film sheet 21f is bonded to the display portion 1d of the display unit 1 by the same operation as described above. Thereafter, the mother board B is displaced in the left lateral direction by the same operation, and the optical film sheet 21f is bonded. In the case where the display unit 1 is a three-column example of the drawing, the bonding system of the optical film sheet 21f of the front display unit is completed. This state is shown in Figure 13(c).

Next, the bonding suction holding tray 10 is driven in the feeding direction to a distance corresponding to the interval between the display units 1 in the respective columns, and the second display unit 1 is counted from the front in the right end row. It is positioned at the bonding position, and similarly as shown in Fig. 13 (d), the optical film sheet 21f is attached to the display portion 1d of the unit 1. Thereafter, as shown in Fig. 13 (e), the mother board B is driven in the feeding direction, and the optical film sheet 21f is bonded by the same operation.

When the bonding of the optical film sheets 21f of all the display units 1 is completed, the mother board B is sent to the second surface inspection station V while being held by the bonding suction holding tray 10. . The second surface inspection station V has the same configuration as that of the first surface inspection station III, and includes a light source 44 for inspection and a light receiving element 45 for receiving reflected light. The mother board B subjected to the surface inspection at the second surface inspection station V is sent to the cutting station VI from the second surface inspection station V.

Fig. 14 is a perspective view showing an example of a cutting device used at the cutting station VI. The cutting device is provided inside with a vacuum suction stage 46 connected to the vacuum suction source 49, and a cutting template 47 that is detachably attached to the vacuum suction stage 46. The cutting groove 47a formed at intervals corresponding to the size of the display unit 1 and the arrangement interval of the display unit 1 on the mother board B is provided. Further, the cutting template 47 has a plurality of vacuum suction holes 47b similar to the suction holding tray 10 for bonding. Further, it is provided to cut the object placed on the cutting die plate 47 into a cutting blade 48 of a specific size in the vertical and horizontal directions by moving along the cutting grooves 47a. The cutting template 47 is prepared in a plurality of sizes suitable for the display unit 1, and can be used by selecting an appropriate template in accordance with the size of the displayed display unit and attaching it to the vacuum suction stage 45.

The mother board B transferred to the cutting station VI is transferred from the bonding suction holding tray 10 to the cutting template 47a on the vacuum suction stage 45. This reprint can be preceded by the connection to the position adjustment station I The transfer is carried out in the same manner as described above. The mother board B which is positioned and vacuum-held on the cutting template 47 is cut by the cutting blade 48 along the cutting groove 47a of the cutting die plate 47. The size corresponding to each display unit 1. In this manner, a display unit in which the optical film sheet 21f is bonded to the display unit 1d is obtained.

The cutting is not limited to being performed by a cutting edge 48 as generally shown in Fig. 14, for example, a laser cutting mechanism exemplarily shown at the cutting station VI of Fig. 1. 50 or a puncture mechanism 51 having a plurality of cutting edges is used for cutting. Each of the display units 1 that have been cut can be transported to the next construction site by, for example, the general vacuum suction type transport mechanism 52 shown in FIG.

In the above-described embodiment, the optical film which is laminated on the carrier film 21e is cut into a predetermined length by the cutting mechanism 28 to form the optical film sheet 21f, and then It is bonded to the display portion 1d of the display unit 1 on the mother board B. However, in another aspect of the present invention, the film is not cut in advance, and the optical film is in the form of a continuous strip film. The entire display unit of the column is covered and attached. In this embodiment, the cut-in portion forming mechanism 28 in the bonding mechanism 20 shown in Fig. 11 is not required. In Fig. 16, the cooperation shown in the present embodiment is shown. As shown in Fig. 16 (a), the mother board B is positioned such that the front end of the display unit 1 at the front end of the left end of the feeding direction is positioned at a specific position at the fitting position. As described above in connection with FIG. 13, the carrier film 21e is peeled off from the optical film 21, and the optical film is continuous. The ground is attached to the display unit 1 of the left end column. Next, the mother board B is moved in the left lateral direction and the rear direction, and as shown in FIG. 16(b), the display unit 1 before the second column is integrated in the bonding position, and is performed. The same fit. Similarly, the mother board B is moved toward the left lateral direction and the rear side, and as shown in FIG. 16(b), the display unit 1 in front of the right end row is integrated in the bonding position, and is performed. The same fit. The mother board B which has been bonded in this manner is cut by the cutting mechanism shown in Fig. 14, and the respective display units 1 are obtained. The optical film 21 which is continuously bonded by this cutting is cut into a size corresponding to the size of the display surface 1d of the display unit 1.

The method of the present invention can also be applied to the bonding of optical films performed on the display unit 1 disposed on the mother board B in a row. An example of this is shown in FIG. In this case, the display unit 1 is disposed on the mother board B such that the terminal portion 1c is laterally oriented with respect to the direction of the column. In the same manner as the operation described in connection with FIG. 11, the optical film sheet 21f cut in advance is sequentially attached to the display unit 1 from the front of the column. The display unit 1d performs the above thing and proceeds. Instead of the above operation, the entire display unit 1 of the column may be covered, and the optical film 21 may be attached to the display portion 1d thereof, and the remaining portion of the optical film 21 may be cut off in the subsequent cutting process.

18 and 19 are diagrams for applying the method of the present invention to a display unit constructed for a flexible sheet having a large size. Embodiments in the bonding of optical films are shown. When the display unit is tied to the organic EL unit, the unit itself can be made into a thin flexible sheet structure. In the case of such an optical display unit having a flexible sheet structure, it is difficult to bond the optical film by a conventional roll-to-panel (RTP) method due to its thin thickness and flexibility. According to this embodiment of the present invention, it is possible to perform bonding of an optical film of a display unit having a large-sized flexible sheet structure by the above method.

Referring to Fig. 18, the optical display unit 60 of the flexible sheet structure has a rectangular shape having a short side 60a and a long side 60b, and is provided with a terminal portion 60c disposed along the short side 60a, and has a longitudinal direction. A display portion 60d having a length L and a width W in the lateral direction. This display unit 60 is formed on a substrate 61 made of a heat resistant resin material such as polyimide. The manufacturing process is the same as that described with respect to FIG. 3, and the resin substrate 61 is formed into a film shape on a glass substrate, and an optical display unit 60 such as an organic EL display unit is formed thereon. The difference in the case of FIG. 3 is that in the present embodiment, one display unit is formed on the substrate 61. The optical display unit 60 is formed on the substrate 61 in the same manner as described in connection with FIG. 3, after which the surface protective film is attached to the display unit 60, and then the substrate 61 is bonded from the glass. The substrate is peeled off. Thereafter, a protective film is bonded to the back surface of the substrate 61 to form a unit mother board B. The unit mother board B is the same as the one described in connection with FIG. 5, FIG. 6, FIG. 7, FIG. 8, FIG. 9, FIG. The process is carried to the bonding station IV while being held on the attraction holding tray 10.

In the present embodiment, the same mechanism as the bonding mechanism 20 shown in Fig. 11 can be employed. In this case, the optical film 21 fed from the optical film roll 22 is provided with a wide width corresponding to the width W of the display unit 60 shown in FIG. In Fig. 19, the configuration of the bonding portion is schematically shown. The role at the bonding portion is the same as that described above with respect to FIG.

Further, in the embodiment described with reference to Fig. 16, the optical film is bonded to the display unit in the longitudinal direction. However, in still another embodiment of the present invention, the optical film is formed in the lateral direction. The bonding of the sheets. Fig. 20 is a schematic view showing the bonding of the embodiment. As shown in Fig. 20, in this form, the display unit is arranged in a matrix in such a manner that the terminal portion is positioned in the feeding direction 72. That is, in the present embodiment, the feeding direction 72 is the horizontal direction of the display unit, and the direction perpendicular to the feeding direction 72 is the vertical direction of the display unit. Further, in the present embodiment, the optical film sheet 21f is bonded to the entire row of the display cells 70 which are arranged side by side in the longitudinal direction, so that the width of the optical film 21 is wide. It corresponds to the vertical dimension of the column 70 of display units arranged side by side in the longitudinal direction. Here, the term "corresponding to the vertical dimension of the row 70 of the display cells" does not necessarily mean that the rigor is consistent with each other, and the vertical dimension of the row 70 of the display cells may be substantially uniform, for example, for example. , the system is based on the vertical size The width of the optical film can be wide. In the present embodiment, the optical film 21 is cut by the cut-in portion forming mechanism 28 so that the carrier film 21e remains, and the optical film sheet 21f is formed. The interval of the cutting corresponds to the width W of the display surface 1d of the display unit 1 in the lateral direction. Therefore, the optical film 21 is cut in the wide direction by the cut-in portion 28a, and is provided with the width W of the display surface 1d of the display unit 1 and the row 70 of the display unit 1 in total. The optical film sheet 21f having a length corresponding to the length in the longitudinal direction.

Fig. 21 is a schematic view showing an example of a bonding sequence which is related to the form shown in Fig. 20. The bonding holding substrate 10 for the bonding is moved, and as shown in Fig. 21 (a), the leading end of the display surface 1d of the display unit of the first column is positioned at the bonding position of the front end of the optical film sheet 21f. At the office. The carrier film 21e is peeled off from the optical film sheet 21f so that the adhesive layer 21d remains on the side of the optical film sheet 21f, and the optical film sheet 21f is continuously bonded in the lateral direction. The display surface 1d of the display unit 1 of the first column is on the display surface 1d. Next, the mother board B is moved forward, and as shown in FIG. 21(b), the display unit 1 of the second row is integrated in the bonding position, and the same bonding is performed. Similarly, the mother board B is moved forward, and as shown in FIG. 21(c), the display unit 1 of the third row is integrated in the bonding position, and the same bonding is performed. The mother board B which has been bonded in this manner is cut by the cutting mechanism shown in Fig. 14, and the respective display units 1 are obtained. An optical film sheet that is continuously bonded by this cutting 21f is cut to a size corresponding to the size of the display surface 1d of the display unit 1. In the present embodiment, since the mother board B is only moved forward, it is not necessary to move the mother board B forward and backward. Therefore, it is possible to display a plurality of display units arranged in a matrix on the mother board. Fit in a short time. Even if a bonding mechanism that bonds a plurality of optical films in the longitudinal direction is used, it is possible to bond all of the display units on the motherboard only by moving toward the front, but if it is used In most of the bonding mechanisms, the area occupied by the equipment is increased, and if one of the bonding mechanisms fails, the entire bonding apparatus is stopped, and therefore, the crops are not stable. Moreover, most of the bonding mechanisms increase the cost of manufacturing equipment. Further, in the embodiment shown in Fig. 21, the embodiment is the same as that shown in Fig. 11 except for the bonding method.

Further, in the embodiment shown in Fig. 20, before the bonding, the optical film 21 is cut in the width direction of the display surface 1d in a wide width to form the optical film sheet 21f. However, in the present invention, In still another embodiment, after the optical film 21 is continuously bonded to the display surface 1d of the display unit 1 in the lateral direction, the optical film 21 is cut again to form the optical film sheet 21f. Although the optical film 21 can be cut in correspondence with the rear end portion of the display unit 1 in the lateral direction, the optical film sheet 21f can be removed in the cutting process at the subsequent cutting station VI. The excess portion is cut off, so that the excess portion of the optical film 21 can be left and cut off near the end of the display surface 1d. If it is stored in the horizontal direction In the terminal portion 1c, the optical film 21 is cut off on the terminal portion 1c, and the terminal portion 1c is easily damaged. Therefore, it is preferable that the terminal portion 1c is positioned at the front end in the lateral direction. The way at the side is configured.

Further, in another embodiment of the present invention, the optical film sheet is bonded to the lateral direction of the display unit in the same manner as the embodiment shown in Fig. 20, but a plurality of optical films are used. In the case of the volume, it is different. In Fig. 22, a schematic view of the bonding by the embodiment is shown. In the present embodiment, the widths of the two optical film rolls 22-1 and 22-2 correspond to the two partial columns 70-1 and 70-2 of the display unit constituting the column 70 of the display unit, respectively. The vertical dimension of the two optical film rolls 22-1 and 22-2 corresponds to the longitudinal dimension of the row 70 of display cells. Also in the present embodiment, the optical films 21-1 and 21-2 are cut by the cut-in portion forming mechanism 28, and the carrier films 21e-1 and 21e-2 are left to be cut and optically formed. Film sheets 21f-1 and 21f-2. The interval of the cutting corresponds to the width W of the display surface 1d of the display unit 1 in the lateral direction. Therefore, the optical films 21-1 and 21-2 are cut so as to have a width W in the lateral direction with the display surface 1d of the display unit 1 and a partial row 70-1 (70-2) of the display unit 1. The optical film sheets 21f-1 and 21f-2 of the side corresponding to the longitudinal direction length. In the present embodiment, two optical film rolls of the same type are used. However, it is also possible to use three or more film rolls, and it is also possible to use a wide-width optical film roll. Moreover, similarly to the case of using one optical film roll, After the optical film is bonded to the display unit, the optical film is cut.

Fig. 23 is a schematic view showing an example of a bonding sequence which is related to the form shown in Fig. 22. The bonding is carried out by the same bonding method as that described in Fig. 20 . That is, the mother board B is moved toward the front (lateral direction) as shown in FIG. 23(a) so that the front end of the optical film sheet 28-1 and the display unit of the display unit of the first column are displayed. The positioning is performed in a manner consistent with the previous end of 1d, and the fitting to the display unit 1 belonging to the partial column 70-1 is performed. For the purpose of bonding, the carrier film 21e-1 is peeled off from the optical film sheet 21f-1 as described above in connection with Fig. 13, and the optical film sheet 21f-1 is continuously continuous in the lateral direction. It is bonded to the display surface 1d of the display unit 1 of the first column of the partial column 70-1. At this time, the bonding position of the optical film sheet 28-2 is at a position which is two rows ahead of the optical film sheet 28-1 in the lateral direction (feeding direction), and therefore The display unit 1 belonging to the partial column 70-2 is not bonded to the optical film sheet 21f-2. Next, the mother board B is moved forward, and as shown in FIG. 23(b), the display unit 1 of the partial column 70-1 of the second column is integrated into the optical film sheet 28-1. The state at the position, and the same fit. Further, the mother board B is moved forward, and as shown in FIG. 23(c), the display unit 1 of the third row is integrated in the bonding position. At this time, the front end of the optical film sheet 28-2 is positioned at the front end of the display surface 1d of the display unit in the first column of the partial row 70-2. Thus, the display unit of the partial column 70-1 of the third column and the display unit of the first column of the partial column 70-2 are simultaneously bonded. Further, the mother board B is moved forward, and as shown in FIG. 23(d), the display unit 1 of the partial column 70-1 of the fourth column is integrated with the optical film sheet 28-1. At the position, the display unit 1 of the partial column 70-2 of the second column is integrated in the bonding position of the optical film sheet 28-2, and the same bonding is performed. Thus, the mother board B to which the optical film sheets are bonded to all the display units is cut by the cutting mechanism shown in FIG. 14, and the respective display units 1 are obtained. Different from the above-described embodiments, the bonding mechanism may be arranged side by side at the same position in the lateral direction. In addition, although not shown in FIG. 22, in the periphery of the actual bonding position, there is a bonding mechanism including a peeling means and a supporting member for the bonding roller. Therefore, it is easy to ensure the arrangement space of the bonding mechanism by arranging the bonding positions of the optical films so as to be different from each other in the horizontal direction of each of the optical film rolls. . In terms of securing the arrangement space, since the adjacent bonding mechanism is particularly problematic, it is preferable that only the bonding position corresponding to the adjacent optical film roll is caused. The horizontal directions are different from each other. In the present embodiment, the bonding position of the optical film rolls 22-1 and 22-2 is different in the horizontal direction and the difference between the two rows is caused. However, the difference is not limited thereto. The fit position produces only a difference in the amount of one column.

In another aspect of the present invention, an optical film roll having a wide width corresponding to a partial row of the display unit is used, but The display unit can be arranged in a row by making the bonding position of the optical film sheet and the mother board relatively move in the longitudinal direction and sequentially bonding the optical film sheets for each of the columns. The optical film sheet is attached to the upper surface. That is, after the optical film sheet is attached to the partial row of the display unit, the display unit (motherboard) and the optical film sheet are relatively moved in the longitudinal direction as a distance corresponding to the partial column of the display unit. And the front end of the display surface of the display unit which constitutes a portion which is not bonded to the optical film sheet is integrated at the bonding position of the optical film sheet. Fig. 24 is a view showing an embodiment in which the relative movement between the optical film sheet 28f and the mother board B in the longitudinal direction is performed by moving the mother board B. In the embodiment shown in Fig. 24, the optical film roll 22 corresponds to the longitudinal dimension of the partial row 70-1 (70-2). Further, the optical film 21 is cut by the cut-in portion forming mechanism 28 so that the carrier film 21e remains, and the optical film sheet 21f is formed. The interval of the cutting corresponds to the width W of the display surface 1d of the display unit 1 in the lateral direction. Therefore, the optical film 21 is cut in the width direction by the cut-in portion 28a, and is provided with the width W and the partial row 70-1 (70-2) of the display unit 1 in the width direction. The optical film sheet 21f having the side corresponding to the direction length.

Fig. 25 is a schematic view showing an example of a bonding sequence which is related to the form shown in Fig. 24. As shown in FIG. 25(a), the mother substrate B is moved by moving the bonding holding substrate 10 for bonding, and the display unit of the first column arranged in a matrix on the mother board B is placed. The alignment is at the bonding position of the optical film sheet 21f. Connect As shown in Fig. 25(b), the portion of the first column of the display unit which is viewed from the feeding direction when viewed from the feeding direction is located at the bonding position of the optical film sheet 21f. That is, the front end of the display surface 1d of the display unit 1 belonging to the partial column 70-1 and the front end of the optical film sheet 28f are positionally integrated with each other. Thereafter, the optical film sheet 28f is continuously bonded in the lateral direction on the display surface 1d of the display unit 1 belonging to the partial row 70-1. After the bonding is performed, the mother board B is moved in the longitudinal direction (the left side in the feeding direction) by the amount of the dimension in the longitudinal direction of the partial row, and as shown in FIG. 25(c), The display unit of the partial row 70-2 on the right side when viewed from the feeding direction in the first row is placed at the bonding position of the optical film sheet. Since the mother board B moves in the lateral direction for bonding, the mother board B is not only moved in the longitudinal direction but also faces rearward (opposite to the bonding direction) and the display surface. The movement of the amount corresponding to the width W in the horizontal direction of 1d. Next, the optical film sheet 21f is attached to the display unit 1 belonging to the partial column 70-2. When the optical film sheet 28f is bonded to all the display units of the first column, the mother board B is moved in the longitudinal direction (the right side in the feeding direction) and the front side as shown in FIG. 25(d). The display unit 1 belonging to the partial column 70-1 of the second column is placed at the bonding position, and the display unit 1 belonging to the partial column 70-1 of the second column is bonded to the optical film. Similarly to the first column, the mother board B is moved, and as shown in Fig. 25(e), the optical film sheet 28f is bonded to the display unit of the partial column 70-2 belonging to the second column. Thus, the optical film sheet 28f is made for all the display units 1 as such. The bonded mother board B is cut by the cutting mechanism shown in Fig. 14, and the respective display units 1 are obtained, and this point is the same as the other forms.

Fig. 26 is a view showing an embodiment in which the above-described relative movement in the longitudinal direction is performed by moving the optical film sheet. In this embodiment, the bonding mechanism 20 is designed to be movable in the longitudinal direction, and the bonding mechanism 20 is moved in the longitudinal direction to position the bonding position of the optical film in the longitudinal direction. The position of the front end side of the display unit is the same as that described in FIGS. 24 and 25.

Fig. 27 is a schematic view showing an example of a bonding sequence which is related to the form shown in Fig. 26. As shown in FIG. 27(a), the mother board B is moved, and the front end of the display surface 1d of the display unit 1 of the first column of the display unit 1 arranged in a matrix on the mother board B is placed. The bonding position of the front end of the optical film sheet 28f is positionally integrated in the lateral direction. Next, as shown in FIG. 27(b), the optical film sheet 28f is moved in the longitudinal direction by the movement of the bonding mechanism 20, so that the front end of the optical film sheet is vertically aligned and integrated. Part of column 1 is listed at 70-1. That is, the display surface 1d of the display unit belonging to the partial column 70-1 and the front end of the optical film sheet 28f are positionally integrated with each other. Thereafter, the optical film sheet is continuously bonded in the lateral direction with respect to the partial row 70-1 at the left side in the feeding direction of the first column. After such bonding, the optical film sheet 21f is longitudinally moved by the movement of the bonding mechanism 20. (the right side of the feed direction) is the movement of the amount of the dimension in the longitudinal direction of the partial column, and as shown in Fig. 27(c), the fitting position is aligned to the right of the feeding direction belonging to the first column. Part of row 70-2 is at display unit 1. Since the mother board B moves in the lateral direction for bonding, the mother board B is oriented only toward the rear (the direction opposite to the bonding direction) and corresponds to the width W of the display surface 1d. The amount of movement. Next, the optical film sheet 28f is attached to the display unit 1 belonging to the partial column 70-2. When the optical film sheet 28f is bonded to all the display units in the first row, the bonding mechanism 20 is moved in the longitudinal direction (the left side in the feeding direction), and the mother board B is moved forward, as shown in FIG. As shown in (d), the partial row 70-1 of the second column is placed at the bonding position, and the display unit of the partial column 70-1 belonging to the second column is bonded to the optical film. Thereafter, the mother board B is moved in the same manner as in the first column, and as shown in Fig. 27(e), the optical film is bonded to the display unit 1 of the partial column 70-2 belonging to the second column. Sheet 28f. In the present embodiment, since the mother board B is not moved in the longitudinal direction, the size of the bonding station IV in the longitudinal direction can be reduced, so that space saving can be achieved.

In the bonding sequence shown in FIG. 25 and FIG. 27, the bonding of the respective columns is performed from the display unit 1 belonging to the partial column 70-1, but depending on the column, the phase can also be phased. The order of the differences is to fit. For example, by sticking to the display unit belonging to the partial column 70-2 for the second column, when moving from the first column to the second column on the column, it is not necessary to be in the longitudinal direction. Make the motherboard B or The optical film sheet moves. That is, when the positional integration between the optical display film and the display unit between the columns is performed, the position in the vertical direction can be integrated and omitted. Further, in the embodiment shown in FIG. 25 and FIG. 27, the alignment of the three display units 1 is performed twice for the display unit 1 composed of six display units. The optical film sheet 28f is bonded to the display unit 1 of one column, but the bonding of the two display units 1 can be performed three times. Further, it is also possible to perform bonding for one display unit six times, and when there is no remaining optical film remaining on the display surface 1d, it is not necessary to be at the cutting station VI. The optical film was cut. In addition, the number of display units in each column is the same as the plural, and is not limited to six.

Further, in the embodiment shown in Figs. 20 to 26, the configuration other than the bonding station IV is the same as that of the embodiment described with reference to Figs. 1 to 16 .

The present invention has been illustrated and described with respect to the specific embodiments of the present invention. However, the present invention is not limited to the illustrated embodiments, and the scope of the present invention is only in accordance with the claims of the claims. Defined by content.

Claims (34)

One method is a method of attaching an optical film sheet to a rectangular optical display unit in which a terminal portion having an electrical terminal for electrical connection is formed on one side, and is characterized in that a unit assembly body is used. The plate and the optical film laminate roll are formed by a plurality of rectangular optical display units in which terminal portions having electrical terminals for electrical connection are formed on one side. The optical film laminate roll is placed in a state in which the side positions of the terminal portions are in the lateral direction and the optical display surface faces upward, at least in the longitudinal direction and arranged in a row. a continuous film-shaped optical film laminate in which a carrier film is bonded to each other via an adhesive layer on an optical film, and the optical film is provided with at least a unit assembly a wide-polarized polarizing element of the optical display unit arranged in a longitudinal direction on the board in a lateral direction corresponding to the terminal portion in the arrangement state a method comprising: sequentially feeding a plurality of the unit assembly mother sheets to a bonding position; and feeding the optical film laminate from the optical film laminate to a stage a stage at the bonding position; and the optical film and the adhesive layer of the optical film laminate which are sent out are arranged in a longitudinal direction on the unit assembly mother board The longitudinal direction of the optical display unit in the arranged state The distance between the longitudinal direction corresponding to the dimension forms a cut-in portion in the lateral direction, and is formed between the cut-in portions adjacent to each other in the longitudinal direction by the adhesive layer. a stage of the optical film sheet on the carrier film; and the optical film sheet is peeled off from the carrier film in a state where the adhesive layer remains on the optical film side at the bonding position, and is The peeled optical film sheet is sequentially attached to the optical display unit of each of the optical unit units arranged in the longitudinal direction on the unit assembly mother board that moves in the longitudinal direction except for the terminal portion. The stage on the display surface is performed on the optical display unit located in front of the optical display unit arranged in the longitudinal direction on the unit assembly mother board when viewed from the longitudinal direction. Before the bonding of the optical film sheets, the adjustment of the lateral position and the azimuth angle of the unit assembly mother board with respect to the feeding direction is performed, the optical display sheet And the positional integration is performed in the lateral direction and the azimuth angle with respect to the optical film sheet which is sent to the bonding position, by the feeding of the unit assembly mother board and the optical film sheet The advancement is adjusted so that the front ends of the respective optical film sheets and the corresponding front ends of the corresponding optical display units on the unit assembly mother board are aligned with each other. One method is a method of attaching an optical film sheet to a rectangular optical display unit in which a terminal portion having an electrical terminal for electrical connection is formed on one side, and is characterized in that a unit assembly body is used. Plate and optical film laminate roll, The unit assembly mother board is configured by a plurality of rectangular optical display units in which terminal portions having electrical terminals for electrical connection are formed on one side, and the side where the terminal portion is provided is located The optical film laminate roll is placed on the optical film via the adhesive layer in a state in which the optical display surface faces upward and is arranged side by side in a row at least in the longitudinal direction. a continuous strip-shaped optical film laminate in which a carrier film is bonded is wound into a roll, and the optical film is provided with at least a longitudinal direction of the unit assembly main plate a row of the above-mentioned optical display unit having a wide width polarizing element corresponding to a width direction other than the aforementioned terminal portion in a state of being arranged, the method comprising: a plurality of the above-mentioned unit assembly mother board a step of sequentially feeding to the bonding position; and discharging the optical film laminate from the optical film laminate to a stage of the bonding position; and at the bonding position The optical film sheet is peeled off from the carrier film while the adhesive layer is left on the optical film side, and the peeled optical film sheet is continuously bonded to the feeding direction. And the phase of the optical display unit of the plurality of optical display units arranged in the longitudinal direction on the moving unit block, which is arranged in the longitudinal direction, on the area of the optical display surface other than the terminal portion; and the layer to be continuously attached The plurality of optical display units on the unit assembly mother board of the optical film are separated into individual units, and the same At the end of the optical display unit at the longitudinal end, the optical film is cut at the stage where the optical film is bonded to each unit, and is arranged for the aforementioned unit assembly on the mother board. The optical display unit located in front of the optical display unit in the longitudinal direction is positioned in the lateral direction of the unit assembly main body with respect to the feeding direction before the optical film unit is placed in front of the optical display unit. In the adjustment of the azimuth angle, the optical display unit is positionally integrated in the lateral direction and the azimuth angle with respect to the optical film sheet fed to the bonding position, by the unit assembly motherboard The feeding and the advancement of the optical film sheet are adjusted such that the front ends of the respective optical film sheets and the front ends of the corresponding optical display units on the unit assembly mother board are aligned with each other. The method according to claim 1 or 2, wherein the plurality of the optical display units are arranged in a plurality of parallel rows on the unit assembly mother board. In the arrangement, the optical film sheets are bonded to the optical display unit included in each column. The method of claim 3, wherein the bonding of the optical film sheets to the optical display units included in the respective columns arranged in parallel is performed once in a row. In order. The method according to claim 1, wherein the plurality of optical display units on the unit assembly motherboard are arranged in parallel in a longitudinal direction formed by a plurality of the optical display units Ground The optical film is arranged in a plurality of rows, and the optical film is formed on the optical display unit at the leading end in the feeding direction in the first row in the longitudinal direction of the right end or the left end when viewed from the feeding direction. After the sheet is bonded, the unit assembly main body is moved in the lateral direction and the rear direction, and the optical display unit at the leading end of the second column in the longitudinal direction adjacent to the first row in the longitudinal direction is placed. The front end is aligned with the front end of the optical film sheet which is sent to the bonding position, and the optical film sheet of the optical display unit is bonded, and the same bonding is performed in sequence, for all the columns. When the bonding of the optical film sheets by the optical display unit of the previous end is completed, the unit assembly mother board is advanced in the feeding direction, and the position is in the respective columns by the same operation. Bonding of the optical film sheets of the optical display unit of two rows, and performing the same operation in sequence, and performing all the optical display units on the motherboard of the unit assembly Bonding of optical film sheets. The method according to any one of claims 1 to 2, wherein the substrate is flexible. The method of claim 6, wherein the substrate is obtained from a polyimide resin, polyethylene terephthalate, polyethylene naphthalate, and polycarbonate. A heat resistant resin material selected from the group is formed. The method according to claim 6, wherein the substrate is a flexible ceramic sheet or a flexible glass sheet. The method of any one of the preceding claims, wherein the optical display unit is organic EL display unit. The method according to any one of the preceding claims, wherein the optical display unit is a liquid crystal display unit. The method according to any one of the first aspect, wherein the optical film is formed of a polarizing element and a retardation film bonded to the polarizing element. The optical film has a configuration in which the retardation film is positioned on a side facing the adhesive layer, and the retardation film is bonded to the optical display surface of the optical display unit. The method according to claim 11, wherein the absorption axis of the polarizing element and the slow phase axis of the retardation film cross each other at an angle within a range of 45° ± 5°. The method according to claim 12, wherein the absorption axis of the polarizing element is parallel to a longitudinal direction of the optical film, and a retardation axis of the retardation film is opposite to a longitudinal direction of the optical film. It is arranged obliquely toward the oblique direction. The method according to claim 11, wherein the retardation film is a reverse dispersion film having a phase difference from short-wavelength light that is smaller than a phase difference with respect to long-wavelength light. One method is a method of attaching an optical film sheet to an optical display unit having a rectangular flexible flexible sheet structure in which a terminal portion having an electrical terminal for electrical connection is formed on one side, and is characterized in that : A unit mother board and an optical film laminate roll are used, and the unit mother board is formed into a rectangular flexible flexible sheet in which a terminal portion having an electrical terminal for electrical connection is formed on one side. The optical display unit of the structure is arranged on the resin substrate in a state in which the side portion including the terminal portion is in the lateral direction and the optical display surface is facing upward, and the optical film laminate roll is optically a continuous strip-shaped optical film laminate in which a carrier film is bonded via a pressure-sensitive adhesive layer is wound into a roll, and the optical film includes at least one of the unit mother boards The above optical display unit has a layer of a wide polarizing element corresponding to a wide width in the lateral direction except for the terminal portion in the arranged state, and the method includes: sequentially sending the plurality of unit mother boards in sequence a stage to the bonding position; and a stage in which the optical film laminate is taken up from the optical film laminate and sent to the bonding position; and the optical film is sent out The optical film of the laminate and the adhesive layer are arranged in the lateral direction at intervals in the longitudinal direction corresponding to the longitudinal dimension of the optical display unit on the unit mother board in the arrangement state. Forming a cut-in portion to form an optical film sheet supported on the carrier film via an adhesive layer; and at the bonding position, in a state in which the adhesive layer remains on the optical film side And peeling off the optical film sheet from the carrier film, and adhering the peeled optical film sheet to the film in sequence Performing an optical film sheet on the optical display unit of the unit mother board on a stage of an optical display surface other than the terminal portion of the optical display unit on the unit mother board that is moved in the direction of movement Before the bonding, the lateral position and the azimuth angle of the unit mother board in the feeding direction are adjusted, and the optical display unit is formed with respect to the optical film sheet fed to the bonding position. The positional integration is performed in the lateral direction and the azimuth angle, and the front end of each optical film and the corresponding optical display unit on the unit mother board are adjusted by adjusting the feeding of the unit mother board. The front ends are aligned with each other. One method is a method of attaching an optical film sheet to a rectangular optical display unit in which a terminal portion having an electrical terminal for electrical connection is formed on one side, and is characterized in that a unit assembly body is used. The plate and the optical film laminate roll are formed by a plurality of rectangular optical display units in which terminal portions having electrical terminals for electrical connection are formed on one side. The optical film laminate roll is placed in a state in which the side positions of the terminal portions are in the lateral direction and the optical display surface faces upward, at least in the longitudinal direction and arranged in a row. a continuous film-shaped optical film laminate in which a carrier film is bonded to each other via an adhesive layer on an optical film, and the optical film is provided with at least a unit assembly a plurality of the plurality of optical display units arranged in a longitudinal direction on the board, the longitudinal dimension of which corresponds to a wide width a layer of a polarizing element, the method comprising: sequentially feeding a plurality of the unit assembly mother sheets to a bonding position; and feeding the optical film laminate from the optical film laminate And feeding to the bonding position; and the optical film and the adhesive layer of the optical film laminate to be fed, corresponding to the lateral direction of the optical display unit except the terminal portion In the longitudinal direction, the cut-in portions are sequentially formed in the longitudinal direction, and the cut-in portions which are adjacent to each other in the lateral direction are supported by the carrier film via the adhesive layer. a stage of the optical film sheet; and the optical film sheet is peeled off from the carrier film in a state where the adhesive layer remains on the optical film side at the bonding position, and is peeled off The optical film sheet is continuously bonded to the optical display unit arranged in the longitudinal direction on the unit assembly mother board that moves in the lateral direction, except for the aforementioned a stage on an area of the optical display surface other than the terminal portion; and a plurality of optical display units on the unit assembly mother board to which the optical film sheet is pasted, cut away from individual units, and simultaneously in the optical a stage in which the optical film is cut at the end portion in the longitudinal direction of the display unit and attached to each unit, and is arranged in the longitudinal direction with respect to the aforementioned direction on the unit assembly mother board. Column-shaped optical display unit is located for observation Before the optical display unit in front performs bonding of the optical film sheet, the position and the azimuth angle of the unit assembly main body in the longitudinal direction are adjusted, and the optical display unit is sent to the sticker. The optical film sheet at the position is integrated in the longitudinal direction and the azimuth angle, and the respective opticals are adjusted by feeding the unit assembly and feeding the optical film sheet. The front end of the film sheet of the film and the front end of the optical surface of the corresponding optical display unit on the unit assembly mother board are aligned with each other. One method is a method of attaching an optical film sheet to a rectangular optical display unit in which a terminal portion having an electrical terminal for electrical connection is formed on one side, and is characterized in that a unit assembly body is used. The plate and the optical film laminate roll are formed by a plurality of rectangular optical display units in which terminal portions having electrical terminals for electrical connection are formed on one side. The optical film laminate roll is placed in a state in which the side positions of the terminal portions are in the lateral direction and the optical display surface faces upward, at least in the longitudinal direction and arranged in a row. a continuous film-shaped optical film laminate in which a carrier film is bonded to an optical film via a pressure-sensitive adhesive layer, and the optical film is provided with at least a plurality of the aforementioned optical fibers a layer of a polarizing element having a width corresponding to a longitudinal dimension of the display unit, the method comprising: sequentially sending the plurality of the unit assembly mother boards to the bonding position in sequence It And a step of feeding the optical film laminate from the optical film laminate and feeding it to the bonding position; and leaving the adhesive on the optical film side at the bonding position In the state of the layer, the optical film is peeled off from the carrier film, and the peeled optical film is continuously bonded to the unit assembly on the mother board that moves in the feeding direction. a stage on a region of the optical display surface other than the terminal portion of the plurality of optical display units in the longitudinal direction; and the unit assembly mother board corresponding to the optical film to which the optical film is bonded The optical display unit of the optical display unit except for the lateral end portion of the terminal portion, the optical film is cut and the optical film sheet is formed; and the optical film sheet is continuously bonded to the optical film sheet. The plurality of optical display units on the unit assembly body are separated into individual units and simultaneously attached to the longitudinal end of the optical display unit At the stage of cutting the optical film at the unit, the optical light is located in front of the optical display unit arranged in the longitudinal direction on the unit assembly mother board from the lateral direction. Before the display unit performs bonding of the optical film sheet, the position and the azimuth angle of the unit assembly main body in the longitudinal direction are adjusted, and the optical display unit is sent to the bonding position. The optical film sheet is positionally integrated in the longitudinal direction and the azimuth angle, by using the unit assembly motherboard The feeding and the advancement of the optical film sheets are adjusted so that the leading ends of the sheets of the respective optical films and the front ends of the corresponding optical display units on the unit assembly mother board are aligned with each other. The method according to claim 17, wherein the terminal portion is positioned on a feed front end side of the optical film in the lateral direction. One method is a method of attaching an optical film sheet to a rectangular optical display unit in which a terminal portion having an electrical terminal for electrical connection is formed on one side, and is characterized in that a unit assembly body is used. a plate and a plurality of optical film laminate rolls, the unit assembly body plate being configured as a plurality of rectangular optical display units in which terminal portions having electrical terminals for electrical connection are formed on one side The plurality of optical thin film layers are stacked in a state in which the side portions having the terminal portions are disposed in the lateral direction and the optical display surface is facing upward, at least in the longitudinal direction, and arranged in a row on the substrate. The volume roll is an optical film laminate roll having a plurality of widths corresponding to a plurality of longitudinal rows of a plurality of optical display units constituting the plurality of optical display units. A continuous strip-shaped optical film laminate in which a carrier film is bonded to an optical film including at least a layer of a polarizing element via an adhesive layer Wound into a roll formed by the method, system comprising: a plurality of sequentially supplied to the master unit assembly at a bonding position of a stage of discharging the optical film laminate from the plurality of optical film laminates and feeding it to the bonding position; and the optical film for the plurality of optical film laminates to be fed And the adhesive layer, and the cut portions are sequentially formed in the longitudinal direction at intervals in the longitudinal direction corresponding to the lateral direction of the optical display unit except for the terminal portion, and are adjacent in the lateral direction. a step of forming an optical film sheet supported on the carrier film via an adhesive layer between the two cut portions; and retaining the adhesive on the optical film side at the bonding position In the state of the layer, the plurality of optical film sheets are peeled off from the carrier film, and the plurality of peeled optical film sheets are continuously bonded to the unit set moving in the lateral direction. a stage on an area of the optical display surface of the optical display unit arranged in a longitudinal direction of the plurality of optical display units other than the terminal portion; And a plurality of optical display units on the unit assembly mother board to which the optical film sheet is to be attached, cut away from individual units, and simultaneously fitted at the longitudinal end of the optical display unit At the stage of cutting the optical film at each unit, it is located in front of the optical display unit arranged in the longitudinal direction on the unit assembly mother board from the lateral direction. Before the optical display unit performs the bonding of the optical film sheet, the position and orientation of the longitudinal direction of the unit assembly mother board are performed first. In the adjustment of the angle, the optical display unit is positionally integrated in the longitudinal direction and the azimuth angle with respect to the optical film sheet fed to the bonding position, by the unit assembly body The feeding and the advancement of the optical film sheet are adjusted so that the front end of each of the optical film sheets and the front end of the optical surface of the corresponding optical display unit on the unit assembly mother board are aligned with each other. The method according to claim 19, wherein the bonding positions of the plurality of optical film laminates adjacent to each other in the longitudinal direction are different from each other in the lateral direction. One method is a method of attaching an optical film sheet to a rectangular optical display unit in which a terminal portion having an electrical terminal for electrical connection is formed on one side, and is characterized in that a unit assembly body is used. The plate and the optical film laminate roll are formed by a plurality of rectangular optical display units in which terminal portions having electrical terminals for electrical connection are formed on one side. The optical film laminate roll is provided in a state in which the side positions of the terminal portions are in the lateral direction and the optical display surface faces upward, at least in the longitudinal direction and arranged in a row. a continuous strip-shaped optical film laminate in which a carrier film is bonded to an optical film via an adhesive layer, and the optical film is provided with at least a plurality of the aforementioned a layer of a wide polarizing element having a longitudinal dimension corresponding to one of a plurality of partial columns of the optical display unit of the optical display unit, The method includes: sequentially feeding a plurality of the unit assembly mother sheets to a bonding position; and feeding the optical film laminate from the optical film laminate to a sheet and feeding the sheet And a phase of the position; and the optical film and the adhesive layer of the optical film laminate to be fed, in a longitudinal direction corresponding to a lateral direction of the optical display unit other than the terminal portion The slit portion is sequentially formed in the longitudinal direction, and the optical film sheet supported on the carrier film via the adhesive layer is formed between the two adjacent cut portions in the lateral direction. And at the bonding position, the optical film sheet is peeled off from the carrier film in a state where the adhesive layer remains on the optical film side, and the peeled optical film sheet is pasted. An area of an optical display surface other than the terminal portion of the optical display unit arranged in the longitudinal direction on the unit assembly mother board that moves in the lateral direction And the step of bonding the optical film sheets in a longitudinal direction by relatively moving the optical film sheet and the unit assembly mother board in the longitudinal direction; And a plurality of optical display units on the unit assembly mother board to which the optical film sheet is to be attached, which are separated into individual units, and if there is a remaining optical film, at the same time At the longitudinal end of the optical display unit, the optical film is cut at the stage where the optical film is cut at each unit, Before the optical film unit located in front of the optical display unit arranged in the longitudinal direction on the unit assembly mother board is viewed from the lateral direction, the optical film unit is placed in front to perform the bonding of the optical film sheet. First, the position of the longitudinal direction of the unit assembly main body and the azimuth angle are adjusted, and the optical display unit is in the longitudinal direction and the azimuth angle with respect to the optical film sheet fed to the bonding position. Position integration is performed, and the advancement of the unit assembly mother board and the advancement of the optical film sheet are adjusted to correspond to the front end of each optical film sheet and the unit assembly mother board. The front ends of the optical surface of the optical display unit are aligned with each other. The method according to claim 21, wherein the optical film sheet and the unit assembly mother board are relatively moved in the longitudinal direction by moving the unit assembly mother board. The method according to claim 21, wherein the optical film sheet and the unit assembly mother substrate are relatively moved in the longitudinal direction by moving the optical film. The method according to any one of claims 16 to 23, wherein a plurality of the optical display units formed in the longitudinal direction of the unit assembly mother board are plural The parallel arrangement of the sheets is performed by bonding the optical film sheets to the optical display units included in the respective columns. The method of claim 24, wherein the bonding of the optical film sheets to the optical display units included in the respective columns arranged in parallel is performed one at a time. In order. The method according to any one of claims 16 to 23, wherein the substrate is flexible. The method of claim 26, wherein the substrate is obtained from a polyimide resin, polyethylene terephthalate, polyethylene naphthalate, and polycarbonate. A heat resistant resin material selected from the group is formed. The method according to claim 26, wherein the substrate is a flexible ceramic sheet or a flexible glass sheet. The method according to any one of claims 16 to 23, wherein the optical display unit is an organic EL display unit. The method according to any one of claims 16 to 23, wherein the optical display unit is a liquid crystal display unit. The method according to any one of claims 16 to 23, wherein the optical film is formed of a polarizing element and a retardation film bonded to the polarizing element, wherein the optical film is In order to position the retardation film on the side facing the adhesive layer, the retardation film is bonded to the optical display surface of the optical display unit. The method according to claim 31, wherein the absorption axis of the polarizing element and the retardation axis of the retardation film cross each other at an angle within a range of 45° ± 5°. For example, the method described in claim 32, wherein The absorption axis of the polarizing element is parallel to the longitudinal direction of the optical film, and the retardation axis of the retardation film is disposed obliquely to the oblique direction with respect to the longitudinal direction of the optical film. The method according to claim 31, wherein the retardation film is a reverse dispersion film having a phase difference from short-wavelength light that is smaller than a phase difference with respect to long-wavelength light.