KR20160045727A - Apparatus and method for manufacturing optical member-bonded body - Google Patents

Abstract

The apparatus for manufacturing an optical member joined body includes a control device for determining a relative bonding position of the optical member to the optical display component based on inspection data in the optical axis direction of the optical display component, An alignment device for aligning the optical display component and the optical member, and a bonding device for bonding the optical member to the optical display component.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus and a method for manufacturing an optical member joined body,

The present invention relates to an apparatus and a method for manufacturing an optical member joined body.

The present application claims priority based on Japanese Patent Application No. 2013-170653 filed on August 20, 2013, the contents of which are incorporated herein by reference.

An optical member such as a polarizing plate or a retardation plate is bonded to an optical display component such as a liquid crystal panel. In order to obtain an image with high contrast, the optical member is bonded in an appropriately aligned state to the optical display component (see, for example, Patent Document 1).

Patent Document 1: Japanese Patent No. 4669070

The optical display component has a predetermined optical axis along the alignment treatment direction of the alignment film and the electrode structure (the slit shape of the electrode or the length direction of the electrode formed in the stripe shape, etc.) in the pixel. Although the direction of the optical axis of the optical display component has been determined in advance by design, there has been a case where a deviation occurs in the direction of the optical axis of the optical display component with respect to the optical axis of the optical member.

The present invention provides an apparatus and a method for manufacturing an optical member joined body capable of improving the accuracy in the optical axis direction of an optical display component bonded to an optical member.

The present invention employs the following means.

(1) That is, an apparatus for manufacturing a first optical member joined body of the present invention includes a control device for determining a relative bonding position of an optical member to the optical display component, based on inspection data in the optical axis direction of the optical display component An alignment device for aligning the optical display component and the optical member based on the determined relative bonding position, and a bonding apparatus for bonding the optical member to the optical display component.

(2) In the apparatus for manufacturing an optical member joined body described in the above (1), the control device may be configured to perform, based on both inspection data in the optical axis direction of the optical display component and inspection data in the optical axis direction of the optical component, The relative bonding position may be determined.

(3) An apparatus for manufacturing a second optical member joined body according to the present invention is characterized in that, based on inspection data in the optical axis direction of the optical display component, A joining device for joining the sheet piece to the optical display part, and a joining device for joining the sheet piece to the optical display part, wherein the joining device joins the sheet piece to the optical display part, And a cutting device for separating a surplus portion outside the portion corresponding to the bonding surface from the joined body of the sheet piece.

Quot; part corresponding to the joint surface " in the above-mentioned configuration means a part of the sheet piece which is equal to or larger than the size of the display area of the optical display part facing the sheet piece, the outer shape of the optical display part Area, and also an area in which functional parts such as an electric component attachment part in an optical display part are avoided. Likewise, " the size corresponding to the bonding surface " indicates a size equal to or larger than the size of the display area of the optical display component and the size of the outer appearance (outline viewed from the plane) of the optical display component.

(4) An apparatus for manufacturing an optical member joined body according to (3), further comprising an image pickup device for picking up an image including the optical display component in a plan view after joining the sheet piece to the optical display component, The cutting device may cut the sheet piece based on the image.

(5) In the apparatus for manufacturing an optical member joined body described in the above (3) or (4), the control device is characterized in that, in both of the inspection data in the optical axis direction of the optical display component and the inspection data in the optical axis direction The relative position of the sheet member relative to the optical display component may be determined.

(6) A method for manufacturing a third optical member joined body according to the present invention is a method for manufacturing a third optical member joined body, comprising: a relative bonding positioning step of determining a relative bonding position of an optical member to the optical display part, And an alignment step of aligning the optical display component and the optical member based on the determined relative bonding position and a bonding step of bonding the optical member to the optical display component.

(7) In the method of manufacturing an optical member joined body according to (6), in the relative bonding position determining step, both the inspection data in the optical axis direction of the optical display component and the inspection data in the optical axis direction of the optical member The relative bonding position of the optical member with respect to the optical display component may be determined.

(8) According to the fourth aspect of the present invention, there is provided a method of manufacturing a bonded body of a fourth optical member, comprising the steps of: forming, on the basis of inspection data in the optical axis direction of the optical display component, A joining step of joining the sheet piece to the optical display part; a joining step of joining the sheet piece to the optical display part; and a bonding step of joining the sheet piece to the optical display part, And a cutting step of separating an excess portion outside the optical display part and a portion corresponding to the joint surface from the joined body of the sheet piece.

Quot; part corresponding to the joint surface " in the above-mentioned configuration means a part of the sheet piece which is equal to or larger than the size of the display area of the optical display part facing the sheet piece, the outer shape of the optical display part Area, and also an area in which functional parts such as an electric component attachment part in an optical display part are avoided. Likewise, " the size corresponding to the bonding surface " indicates a size equal to or larger than the size of the display area of the optical display component and the size of the outer appearance (outline viewed from the plane) of the optical display component.

(9) The method for manufacturing an optical member joined body according to (8), further comprising an imaging step of picking up an image including the optical display part in a plan view after the sheet piece is bonded to the optical display part , And in the cutting step, the sheet piece may be cut based on the image.

(10) In the optical member joined body manufacturing method described in (8) or (9), in the relative joint positioning step, inspection data in the optical axis direction of the optical display component and inspection The relative position of the sheet member to the optical display component may be determined based on both of the data.

According to the present invention, it is possible to provide an apparatus and a method for manufacturing an optical member joined body capable of improving the accuracy in the optical axis direction of an optical display component bonded to an optical member.

1 is a schematic view showing an apparatus for manufacturing an optical member joined body according to a first embodiment of the present invention.
2 is a plan view of the liquid crystal panel.
3 is a sectional view taken along the line AA in Fig.
4 is a partial cross-sectional view of an optical member sheet bonded to a liquid crystal panel.
5 is a view showing the operation of the cutting apparatus.
6 is a schematic view showing an apparatus for manufacturing an optical member joined body according to a second embodiment of the present invention.
Fig. 7 is a diagram showing an example of a method of determining the joining position of the sheet pieces with respect to the liquid crystal panel.
8 is a cross-sectional view showing a laser cut end of a sheet member bonded to a liquid crystal panel.
Fig. 9 is a cross-sectional view showing a cut end portion of the sheet piece monolith with a laser. Fig.
10 is a plan view showing a process of detecting end edges of a joint surface.
11 is a schematic diagram of a detection device.
12 is a schematic diagram showing a modification of the detection device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments.

In all of the following drawings, the dimensions, ratios, etc. of the respective components are appropriately different in order to make the drawings easier to see. In the following description and drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.

In the following description, the XYZ orthogonal coordinate system is set as necessary, and the positional relationship of the respective members is described with reference to this XYZ orthogonal coordinate system. In the following embodiments, the direction in which the liquid crystal panel serving as an optical display component is moved in the X direction and the direction (the width direction of the liquid crystal panel) orthogonal to the X direction in the plane of the liquid crystal panel is the Y direction, the X direction and the Y direction Direction is a Z-direction.

(First Embodiment)

Hereinafter, a film bonding system 1 which is an apparatus for manufacturing an optical member joined body according to the first embodiment of the present invention will be described with reference to the drawings.

Fig. 1 is a view showing a schematic structure of a film bonding system 1 of the present embodiment.

The film bonding system 1 is to bond a film type optical member such as a polarizing film, an antireflection film, and / or a light diffusion film to a panel type optical display component such as a liquid crystal panel or an organic EL panel. In this embodiment, as an example, a structure in which a polarizing film (optical member) is bonded to both surfaces of a liquid crystal panel (optical display component) to manufacture a liquid crystal display device (optical member joined body) will be described.

As shown in Fig. 1, the film bonding system 1 of the present embodiment is provided as one step of a production line of a liquid crystal panel P. Fig. The respective parts of the film bonding system 1 are collectively controlled by the control device 40 as an electronic control device.

2 is a plan view of the liquid crystal panel P viewed from the thickness direction of the liquid crystal layer P3.

2, the liquid crystal panel P includes a first substrate P1 having a rectangular shape in plan view, a second substrate P1 having a relatively small rectangular shape disposed opposite to the first substrate P1, And a liquid crystal layer P3 sealed between the first substrate P1 and the second substrate P2. The liquid crystal panel P has a rectangular shape along the outer shape of the first substrate P1 in plan view and a region accommodated inside the outer periphery of the liquid crystal layer P3 in plan view is the display region P4 .

3 is a cross-sectional view taken along line A-A in Fig.

As shown in Fig. 3, a first optical member sheet F1 and a second optical member sheet F2 (see Fig. 1, hereinafter referred to as an optical member sheet FX The first optical member F11 and the second optical member F12 (hereinafter sometimes collectively referred to as the optical member F1X) are joined to each other. In this embodiment, a first optical member F11 and a second optical member F12 as polarizing films are bonded to both the backlight side and the display surface side of the liquid crystal panel P, respectively.

Fig. 4 is a partial cross-sectional view of the optical member sheet FX bonded to the liquid crystal panel P. Fig.

4, the optical member sheet FX has a film-like optical member main body F1a, an adhesive layer F2a formed on one surface (upper surface in Fig. 4) of the optical member main body F1a, A separator F3a detachably laminated on one surface of the optical member main body F1a through the adhesive layer F2a and a separator F3b laminated on the other surface of the optical member main body F1a And a surface protective film F4a. The optical member main body F1a functions as a polarizing film and is bonded over the entire region of the display region P4 of the liquid crystal panel P and its peripheral region. In addition, hatching of each layer in Fig. 4 is omitted in the drawing.

The optical member main body F1a is bonded to the liquid crystal panel P via the adhesive layer F2a while separating the separator F3a while leaving the adhesive layer F2a on one side thereof. Hereinafter, the portion excluding the separator F3a from the optical member sheet FX is referred to as a bonded sheet F5.

The separator F3a protects the adhesive layer F2a and the optical member main body F1a until separated from the adhesive layer F2a. The surface protective film F4a is bonded to the liquid crystal panel P together with the optical member main body F1a. The surface protection film F4a is disposed on the side opposite to the liquid crystal panel P with respect to the optical member main body F1a to protect the optical member main body F1a. The surface protective film F4a is separated from the optical member main body F1a at a predetermined timing. The optical member sheet FX may not include the surface protective film F4a or the surface protective film F4a may not be separated from the optical member main body F1a.

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

The optical member main body F1a may have a single-layer structure including one optical layer or a multi-layer structure in which a plurality of optical layers are laminated to each other. The optical layer may be a retardation film, a brightness enhancement film, or the like in addition to the polarizer F6. At least one of the first film (F7) and the second film (F8) may be subjected to a surface treatment for obtaining an effect such as anti-glare treatment including hard coat treatment for protecting the outermost surface of the liquid crystal display element and anti glare treatment . The optical member main body F1a may not include at least one of the first film F7 and the second film F8. For example, when the first film F7 is omitted, the separator F3a may be bonded to one surface of the optical member main body F1a through the adhesive layer F2a.

Next, the film bonding system 1 of the present embodiment will be described in detail.

1, the film joining system 1 of the present embodiment is provided with the liquid crystal panel P on the left side in the drawing from the upstream side (+ X direction side) of the liquid crystal panel P on the right side in the drawing, And a drive type roller conveyor 5 for conveying the liquid crystal panel P in a horizontal state on the downstream side (-X direction side) in the conveying direction.

The roller conveyor 5 is divided into an upstream conveyor 6 and a downstream conveyor 7 with a boundary of a reversing device 15 to be described later. In the upstream-side conveyor 6, the liquid crystal panel P is conveyed so that the short side of the display area P4 is along the conveying direction. On the other hand, in the downstream conveyor 7, the liquid crystal panel P is conveyed so that the long side of the display region P4 is along the conveying direction. (Optical member F1X) of a bonded sheet F5 cut out to a predetermined length from a band-shaped optical member sheet FX is bonded to the front and back surfaces of the liquid crystal panel P.

The upstream conveyor 6 is provided with an independent free roller conveyor 24 downstream of the first alignment device 11 to be described later. On the other hand, the downstream conveyor 7 is provided with an independent free roller conveyor 24 on the downstream side in the later-described second alignment device 20.

The film bonding system 1 of the present embodiment includes a first alignment device 11, a first dust collecting device 12, a first bonding device 13, a reversing device 15, a second alignment device 20, A second dust collecting device 16, a second joining device 17, and a control device 40.

The first alignment apparatus 11 sucks the liquid crystal panel P and conveys the liquid crystal panel P to the upstream conveyor 6 and performs alignment of the liquid crystal panel P. [ The first alignment device 11 has a panel holding portion 11a, an alignment camera 11b, and a rail R. [

The panel holding portion 11a holds the liquid crystal panel P which is brought into contact with the stopper S on the downstream side by the upstream conveyor 6 so as to be movable in the vertical direction and the horizontal direction, Alignment is performed. The panel holding portion 11a adsorbs and holds the upper surface of the liquid crystal panel P that has come into contact with the stopper S by vacuum suction. The panel holding portion 11a moves on the rail R in a state in which the liquid crystal panel P is attracted and held to carry the liquid crystal panel P. [ When the conveyance is completed, the panel holding portion 11a releases the suction holding and transfers the liquid crystal panel P to the free roller conveyor 24. [

The alignment camera 11b picks up an alignment mark or a front end shape of the liquid crystal panel P in a state in which the panel holding portion 11a holds the liquid crystal panel P which has come into contact with the stopper S. The image pickup data by the alignment camera 11b is transmitted to the control device 40. [

The imaging process by the alignment camera 11b is not limited to the alignment mark and the tip shape of the liquid crystal panel P but may be based on the outline of the liquid crystal panel P or the black matrix.

The control device 40 operates the first alignment device 11 based on the imaging data and inspection data in the direction of the optical axis of the liquid crystal panel P stored in advance.

Here, the " optical axis direction of the liquid crystal panel P " refers to the alignment treatment direction of the alignment film for controlling the alignment direction of the liquid crystal and the direction defined by the electrode structure in the pixel. The alignment treatment direction of the alignment layer refers to the alignment direction of the liquid crystal generated by the rubbing treatment or the photo alignment treatment. The direction defined by the electrode structure in the pixel means, for example, in the case of the IPS system or VA system, the direction of liquid crystal alignment in the direction of the liquid crystal (the direction of rotation of the liquid crystal molecules in the horizontal plane, ) Of the plurality of stripe electrodes. In this specification, an axis parallel to the orientation treatment direction of the alignment film and the direction defined by the electrode structure in the pixel is defined as the optical axis of the liquid crystal panel P. The liquid crystal panel in the " optical axis direction of the liquid crystal panel P " means a single liquid crystal panel before an optical member such as a polarizing film is bonded.

The optical axis direction of the liquid crystal panel P is measured by a high-speed retardation measurement apparatus (model: RE-100) manufactured by Otsuka Electronics Co., Ltd., a cell gap inspection apparatus (model: RETS) manufactured by Otsuka Electronics Co., Measurement is made using an optical axis measuring device such as a measuring device (model: KOBRA-WPR).

The size of the sample (liquid crystal panel (P)) measurable by the RE-100 is 10 mm x 10 mm to 100 mm x 100 mm. The sample size that can be measured by RETS is 20 mm × 20 mm, and it is applicable to large panels of 2000 mm × 2000 mm or more.

In the method of measuring the liquid crystal panel P in the optical axis direction, a polarizer is disposed on the upper side of the sample, an analyzer is disposed on the lower side of the sample, a single wavelength light flux is irradiated from the polarizer side, and the polarizer and the analyzer are held The phase difference and the orientation angle of the sample are obtained from the angle dependency of the transmitted light intensity when the sample is rotated once about the light axis.

An example of a method of measuring the optical axis direction of the liquid crystal panel P according to the system of the liquid crystal panel is shown below.

When the direction of the optical axis of the liquid crystal panel P is measured, in the case of normally black, liquid crystal driving is not required. On the other hand, in the case of normally white, although black display is performed by liquid crystal driving, the optical axis direction in black display can be calculated without performing liquid crystal driving. For example, in the case of the IPS system, the liquid crystal molecules are rotated by 90 degrees in a plane parallel to the substrate. In the case of the IPS system, since it is a horizontal alignment, the direction of the horizontal axis of the optical axis can be measured.

In the present embodiment, the measurement method of the optical axis direction in the case of the IPS system has been described, but the present invention is also applicable to other systems such as the VA system.

The optical axis direction of the liquid crystal panel P is measured based on the alignment mark, the tip shape, the outline and the black matrix of the liquid crystal panel P as a reference. The optical axis direction of the liquid crystal panel P is previously measured outside the line of the film joining system 1. In this case, for example, the timing for detecting the optical axis direction of the liquid crystal panel P may be a time for manufacturing the liquid crystal panel P, or may be a period until the liquid crystal panel P is brought into the line.

The optical axis measuring device may be introduced into the upstream side of the panel transportation from the first alignment device 11 to measure the optical axis direction of the liquid crystal panel P in advance in the line.

The control device 40 operates the first alignment device 11 on the basis of both the inspection data in the optical axis direction of the liquid crystal panel P and the inspection data in the optical axis direction of the optical member F1X.

For example, inspection data in the optical axis direction of the optical member F1X is obtained by the following method.

A plurality of inspection points are set in the width direction of the optical member sheet FX and the direction of the optical axis of the optical member sheet FX at each inspection point is detected. The timing for detecting the optical axis may be the time when the master roll R1 is manufactured or may be between the master roll FX and the optical member sheet FX until they are half-cut. The data in the optical axis direction of the optical member sheet FX is related to the position of the optical member sheet FX (position in the longitudinal direction and width direction of the optical member sheet FX) do.

The control device 40 acquires the data (inspection data of the in-plane distribution of the optical axis) of the optical axis of each inspection point from the storage device and obtains the optical member sheet FX (The region partitioned by the perforated line CL) as the optical axis direction of the optical member F1X. The control device 40 determines the bonding position (relative bonding position) of the optical member F1X and the liquid crystal panel P on the basis of the inspection data of the in-plane distribution of the optical axis in each part of the optical member sheet FX .

The first alignment device 11 aligns the liquid crystal panel P such that the optical axis direction of the liquid crystal panel P and the optical axis direction of the optical member F1X have a predetermined arrangement. For example, the predetermined arrangement may be such that the optical axis direction of the liquid crystal panel P is parallel to the optical axis direction of the optical member F1X, or the optical axis direction of the liquid crystal panel P and the optical axis direction of the optical member F1X So that the axial direction has a predetermined angle. The predetermined arrangement is appropriately set to a desired arrangement based on the requirements of the optical display device.

The first alignment device 11 is operated and controlled by the control device 40 to align the liquid crystal panel P with respect to the first joining device 13. [ Specifically, the panel holding portion 11a operates to align the liquid crystal panel P with respect to the free roller conveyor 24 as the conveying destination. At this time, the liquid crystal panel P is moved in the conveying direction with respect to the free roller conveyor 24, in the direction orthogonal to the conveying direction, and in the turning direction about the vertical axis of the liquid crystal panel P, And conveyed to the conveyor 24. The liquid crystal panel P conveyed on the rail R by the panel holding portion 11a is pressed and clamped together with the sheet piece (optical member F1X) in a state of being attracted to the adsorption pad 26, And is held in the roll 23.

The first dust collecting device 12 is disposed on the upstream side of the fitting press roll 23 as the joining position of the first joining device 13 in the conveying direction of the liquid crystal panel P. [ The first dust collector 12 performs static electricity removal and dust collection to remove dust around the liquid crystal panel P before being introduced to the bonding position, particularly dust on the lower surface side.

The first joining apparatus 13 is provided on the downstream side of the first alignment apparatus 11 in the panel conveying direction. The first joining apparatus 13 joins the sheet piece of the joining sheet F5 cut with a predetermined size (the first optical member F11) to the lower surface of the liquid crystal panel P introduced to the joining position .

The first joining apparatus 13 includes a conveying device 22 and a press-fitting roll 23.

The conveying device 22 conveys the optical member sheet FX along its longitudinal direction while releasing the optical member sheet FX from the disc roll R1 on which the optical member sheet FX is wound. The transport apparatus 22 carries the bonded sheet F5 using the separator F3a as a carrier. The conveying device 22 has a roll holding portion 22a, a plurality of guide rollers 22b, a cutting device 22c, a knife edge 22d and a winding portion 22e.

The roll holding portion 22a holds the disc roll R1 around which the band-shaped optical member sheet FX is wound and simultaneously unwinds the optical member sheet FX along its longitudinal direction.

The plurality of guide rollers 22b wind the optical member sheet FX to guide the optical member sheet FX unreeled from the disc roll R1 along a predetermined conveying path.

The cutting device 22c performs a half cut on the optical member sheet FX on the conveying path.

The knife edge 22d winds the half-cut optical member sheet FX at an acute angle and separates the bonded sheet F5 from the separator F3a and feeds the bonded sheet F5 to the bonded position.

The winding portion 22e holds the separator roll R2 wound around the separator F3a that has been made singly via the knife edge 22d.

The roll holding portion 22a located at the time of the transport apparatus 22 and the spool portion 22e located at the end of the transport apparatus 22 are driven in synchronism with each other, for example. Thus, while the roll holding portion 22a uncovers the optical member sheet FX in its carrying direction, the winding portion 22e winds the separator F3a through the knife edge 22d. Hereinafter, the upstream side of the optical member sheet FX (separator F3a) in the conveying device 22 in the conveying direction is referred to as the sheet conveying upstream side, and the conveying direction downstream side is referred to as the sheet conveying downstream side.

Each of the guide rollers 22b changes the traveling direction of the optical member sheet FX during transportation along the conveying path and at least a part of the plurality of guide rollers 22b moves the tension of the optical member sheet FX .

A dancer roller (not shown) may be disposed between the roll holding portion 22a and the cutting device 22c. The dancer roller absorbs the loosening amount of the optical member sheet FX conveyed from the roll holding portion 22a while the optical member sheet FX is cut by the cutting device 22c.

Fig. 5 is a diagram showing the operation of the cutting apparatus 22c of the present embodiment.

5, the cutting device 22c cuts the optical member sheet FX over the entire width in the width direction orthogonal to the length direction of the optical member sheet FX when the optical member sheet FX is released from the optical member sheet FX FX is cut in the thickness direction. The cutting device 22c of the present embodiment is provided so as to be capable of advancing and retracting from the opposite side of the separator F3a to the optical member seat FX toward the optical member seat FX.

The cutting device 22c is arranged so that the optical member sheet FX (the separator F3a) is not broken (the predetermined thickness remains in the separator F3a) due to the tension acting during conveyance of the optical member sheet FX, The advancing / retreating position of the cutting edge is adjusted, and a half cut is performed to the vicinity of the interface between the adhesive layer F2a and the separator F3a. Further, a laser device may be used instead of the cutting blade.

The optical member sheet F1 after the half cut is cut into the optical member main body F1a and the surface protective film F4a in the thickness direction so that the perforated lines L1 and L2 Is formed. The perforations L1 and L2 are formed so as to be arranged in plural in the longitudinal direction of the band-shaped optical member sheet FX. For example, in the case of the joining step of conveying the liquid crystal panels P of the same size, the plurality of perforated lines L1 and L2 are formed at regular intervals in the longitudinal direction of the optical member sheet FX. The optical member sheet FX is divided into a plurality of sections in the longitudinal direction by a plurality of perforations L1 and L2. The sections sandwiching the pair of perforated lines L1 and L2 adjacent to each other in the longitudinal direction in the optical member sheet FX become one sheet piece (optical member F1X) in the bonded sheet F5.

Returning to Fig. 1, the knife edge 22d is disposed below the upstream-side conveyor 6 and extends at least over its full width in the width direction of the optical member sheet FX. The knife edge 22d is wound around the separator F3a side of the optical member sheet FX after the half-cut so as to be in sliding contact therewith.

The knife edge 22d has a first surface disposed in a side lying position viewed from the width direction of the optical member sheet FX (width direction of the upstream conveyor 6) Has a second surface disposed at an acute angle with respect to the first surface when viewed from the width direction of the first substrate (FX), and a tip end where the first surface and the second surface intersect.

In the first joining apparatus 13, the knife edge 22d winds the first optical member sheet F1 at an acute angle at its tip end. The first optical member sheet F1 separates the sheet piece (optical member F1X) of the bonded sheet F5 from the separator F3a when the front end of the knife edge 22d is folded at an acute angle. The leading end portion of the knife edge 22d is arranged close to the upstream side of the press-fitting roll 23 in the panel conveying direction. The optical member F1X separated from the separator F3a by the knife edge 22d overlaps the lower surface of the liquid crystal panel P in a state of being adsorbed by the first alignment device 11 and is held on the fitting press roll 23, The pair of joining rollers 23a.

On the other hand, the separator F3a separated from the bonding sheet F5 by the knife edge 22d is directed to the winding portion 22e. The winding portion 22e winds and collects the separator F3a separated from the bonding sheet F5.

The press-fitting roll 23 is configured such that the optical member F1X separated from the first optical member sheet F1 by the conveying device 22 is joined to the lower surface of the liquid crystal panel P conveyed by the upstream conveyor 6 do.

The press-fitting roll 23 has a pair of joining rollers 23a and 23a (the joining rollers 23a are moved up and down) arranged in parallel with each other in the axial direction. A predetermined gap is formed between the pair of joining rollers 23a and 23a, and the inside of the gap serves as a joining position of the first joining apparatus 13. [

The liquid crystal panel P and the optical member F1X are superposed and introduced into the gap. These liquid crystal panels P and the optical member F1X are fed to the downstream side of the upstream conveyor 6 in the panel conveying direction while being fitted and pressed by the respective joining rollers 23a. The first optical member joined body PA1 is formed by bonding the first optical member F11 to the backlight side surface of the liquid crystal panel P by the fitting press roll 23. [

The first optical member F11 having a size corresponding to the display region P4 of the liquid crystal panel P is bonded to the backlight side of the liquid crystal panel P. [ A first optical member F11 having the same size as the outer shape of the liquid crystal panel P (the first substrate P1) is bonded to the backlight side of the liquid crystal panel P.

The optical axis direction of the liquid crystal panel P and the direction of the optical axis of the optical member F1X may be different from each other even if the first optical member F11 is obliquely bonded to the liquid crystal panel P In the optical axis direction may be within the permissible range. The first optical member F11 may be bonded to the display region P4 of the liquid crystal panel P slightly larger than the display region P4. For example, in a slightly larger size, it is allowed up to 500 占 퐉 outside the black matrix on each side of the liquid crystal panel P (first substrate P1).

The reversing device 15 reverses the first optical member joined body PA1 with the display surface side of the liquid crystal panel P as an upper surface so that the backlight side of the liquid crystal panel P is the upper surface, The first optical member joined body PA1 is aligned with the first optical member joined body 17.

The reversing device 15 has the same alignment function as the panel holding portion 11a of the first alignment device 11. [ The reversing device 15 is provided with the same alignment camera 15c as that of the alignment camera 11b of the first alignment device 11. [

The reversing device 15 determines the position in the component width direction and the position in the rotation direction of the first optical member joined body PA1 with respect to the second joining apparatus 17 based on the imaging data of the alignment camera 15c . In this state, the first optical member joined body PA1 is introduced to the joining position of the second joining apparatus 17.

Since the second alignment device 20 has the same configuration as the first alignment device 11, the same parts are denoted by the same reference numerals. The second alignment apparatus 20 sucks the first optical member joined body PA1 and conveys it to the downstream conveyor 7 and aligns (positions) the first optical member joined body PA1. The second alignment apparatus 20 has a panel holding section 11a, an alignment camera 11b, and a rail R. [

The panel holding portion 11a holds the first optical member joined body PA1 which is in contact with the downstream stopper S by the downstream conveyor 7 so as to be movable in the vertical direction and the horizontal direction, Alignment of the member assembly PA1 is performed. The panel holding portion 11a holds the upper surface of the first optical member joined body PA1 in contact with the stopper S by vacuum suction. The panel holding portion 11a moves on the rail R in a state in which the first optical member joined body PA1 is attracted and held to carry the first optical member joined body PA1. When the conveyance is completed, the panel holding portion 11a releases the suction holding and transfers the first optical member assembly PA1 to the free roller conveyor 24.

The alignment camera 11b is configured such that the first optical member joined body PA1 in contact with the stopper S is held in the state in which the panel holding portion 11a holds it and the alignment mark and the tip shape of the first optical member joined body PA1 And the like. The image pickup data by the alignment camera 11b is transmitted to the control device 40. [

The imaging process by the alignment camera 11b is not limited to the alignment mark and the tip shape of the liquid crystal panel P but may be based on the outline of the liquid crystal panel P or the black matrix.

The control device 40 operates the second alignment device 20 based on the imaging data and inspection data in the optical axis direction of the liquid crystal panel P previously stored. That is, the operation of the second alignment device 20 is performed on the basis of the inspection data in the optical axis direction of the liquid crystal panel P used in the operation of the first alignment device 11.

The control device 40 operates the second alignment device 20 on the basis of both inspection data in the optical axis direction of the liquid crystal panel P and inspection data in the optical axis direction of the optical member F1X.

The second alignment apparatus 20 is operated and controlled by the control device 40 to align the first optical member assembly PA1 with respect to the second joining apparatus 17. [ Specifically, the panel holding portion 11a operates to align the first optical member joined body PA1 with respect to the free roller conveyor 24 as the conveying destination. At this time, the first optical member assembly PA1 is displaced in the conveying direction with respect to the free roller conveyor 24, in the direction perpendicular to the conveying direction, and in the turning direction about the vertical axis of the first optical member joined body PA1 And is conveyed to the free roller conveyor 24 in a state in which it is added.

The second dust collector 16 is disposed on the upstream side of the first pressing member roll 23 in the conveying direction of the first optical member joined body PA1 as the joining position of the second joining apparatus 17. [ The second dust collector 16 performs static elimination and dust collection in order to remove dust around the first optical member assembly PA1 before introduction to the joint position, particularly dust on the lower surface side.

The second joining device 17 is provided on the downstream side of the second dust collecting device 16 in the panel conveying direction. The second joining apparatus 17 is a member for joining the sheet piece (second optical member F12) of the joining sheet F5 cut to a predetermined size to the lower surface of the first optical member joined body PA1 introduced into the joining position Bonding is performed. The second joining apparatus 17 is provided with the same conveying apparatus 22 and the fitting press roll 23 as the first joining apparatus 13.

The first optical member joined body PA1 and the second optical member F12 are provided in the gap between the pair of joining rollers 23a of the fitting press roll 23 (the joining position of the second joining apparatus 17) Overlapping.

The first optical member joined body PA1 and the second optical member F12 are fed to the downstream side of the downstream conveyor 7 in the panel conveying direction while being fitted and pressed by the respective joining rollers 23a. The surface of the display surface side of the liquid crystal panel P (the surface opposite to the surface of the first optical member joined body PA1 bonded with the first optical member F11) And the second optical member F12 is joined to the second optical member joined body PA2.

Here, a second optical member F12 having a size corresponding to the display region P4 of the liquid crystal panel P is bonded to the surface of the liquid crystal panel P on the display surface side. A second optical member F12 having the same size as the outer shape of the liquid crystal panel P (second substrate P2) is bonded to the surface of the liquid crystal panel P on the display surface side.

The optical axis direction of the liquid crystal panel P and the optical axis direction of the optical member F1X may be different from each other even if the second optical member F12 is obliquely bonded to the liquid crystal panel P (second substrate P2) In the optical axis direction may be within the permissible range. The second optical member F12 may be bonded to the display region P4 of the liquid crystal panel P slightly larger than the display region P4. For example, in a slightly larger size, it is allowed up to 500 占 퐉 outside of the black matrix on each side of the liquid crystal panel P (second substrate P2).

A bonding inspection apparatus (not shown) is provided on the downstream side of the second bonding apparatus 17 in the panel transportation direction. The bonding inspection apparatus determines whether or not the position of the optical member F1X is appropriate (whether or not the positional deviation is within the tolerance range) or the like by inspection (not shown) of a film-bonded workpiece (liquid crystal panel P) Inspection) is performed. The workpiece determined that the position of the optical member F1X relative to the liquid crystal panel P is not appropriate is discharged to the outside of the system by the unloading means not shown.

In the present embodiment, the control device 40 as an electronic control device for collectively controlling each part of the film bonding system 1 includes a computer system. The computer system includes an arithmetic processing unit such as a CPU and a storage unit such as a memory or a hard disk.

The control device 40 of the present embodiment includes an interface capable of performing communication with an external device of the computer system. The control device 40 may be connected to an input device capable of inputting an input signal. The above-mentioned input device includes an input device such as a keyboard and a mouse, or a communication device capable of inputting data from an external device of the computer system. The control device 40 may include a display device such as a liquid crystal display or the like which indicates the operation status of each part of the film bonding system 1 or may be connected to a display device.

An operating system (OS) for controlling the computer system is installed in the storage unit of the control device 40. [ The control unit 40 controls the respective parts of the film bonding system 1 in the calculation processing unit so that the processing for transferring the optical member sheet FX to the respective parts of the film bonding system 1 with good precision is carried out A program to be executed is recorded.

The arithmetic processing unit of the control device 40 can read various types of information including a program recorded in the storage unit. The control device 40 may include a logic circuit such as an ASIC for executing various processes required for control of the respective sections of the film bonding system 1. [

The storage section is a concept including a semiconductor memory such as a RAM (Random Access Memory) and a ROM (Read Only Memory), an external storage device such as a hard disk, a CD-ROM reading device, a disk type storage medium and the like. The storage unit is functionally equivalent to the first alignment device 11, the first dust collector 12, the first bonding device 13, the reversing device 15, the second alignment device 20, 16), a storage area for storing the program software in which the control procedure of the operation of the second joining device 17 is described, and various storage areas are set.

As described above, an apparatus for manufacturing an optical member joined body according to the present embodiment is an apparatus for manufacturing a second optical member joined body PA2 formed by joining optical members F11 and F12 to a liquid crystal panel P, A joining device for joining the optical members F11 and F12 to the panel P and a joining device for joining the optical members F11 and F12 to the liquid crystal panel P, (40) for determining the relative bonding positions of the liquid crystal panel (P) and the optical members (F11, F12) based on inspection data in the optical axis direction of the liquid crystal panel (P) Alignment of the liquid crystal panel P and the optical members F11 and F12 is performed on the basis of the relative bonding positions determined by the controller 40 before bonding the optical members F11 and F12 to the optical members F11 and F12, And alignment apparatuses 11 and 20 to be carried out. The controller 40 controls the optical axis direction of the liquid crystal panel P so that the inspection data in the direction of the optical axis of the liquid crystal panel P and the inspection data of the optical member F11 F12 of the liquid crystal panel P and the inspection data of the optical axis direction of each of the optical members F11, F12.

According to this configuration, the liquid crystal panel P and the optical member F1X are bonded after alignment based on inspection data in the direction of the optical axis of the liquid crystal panel P, The liquid crystal panel P can be aligned and bonded to the optical axis direction. Thus, the accuracy of the liquid crystal panel P in the optical axis direction with respect to the optical member F1X is increased, and the sharpness and contrast of the optical display device can be increased. It is also possible to manufacture an optical member joined body including a liquid crystal panel P having an arbitrary optical axis direction.

The optical axis direction of the optical member sheets F1 and F2 is changed according to the positions of the optical member sheets F1 and F2 by bonding the optical member sheets F1 and F2 to the liquid crystal panel P after alignment based on inspection data in the optical axis direction It is possible to align and bond the liquid crystal panel P in alignment with the optical axis direction. This increases the precision in the optical axis direction of the optical members F11 and F12 with respect to the liquid crystal panel P, thereby increasing the sharpness and contrast of the optical display device. It is also possible to manufacture an optical member joined body including an optical member F1X having an arbitrary optical axis direction.

Here, the manufacturing method of the optical member joined body in this embodiment is a manufacturing method of the optical member joined body, which comprises a joining step of joining the optical member F1X to the liquid crystal panel P and a joining step of joining the optical member F1X to the liquid crystal panel P A relative bonding position determining step of determining a relative bonding position of the liquid crystal panel P and the optical member F1X on the basis of inspection data in the optical axis direction of the liquid crystal panel P, And aligning the liquid crystal panel (P) and the optical member (F1X) based on the relative bonding position determined in the relative bonding positioning process, before bonding the optical member (F1X) to the optical member will be. In the relative bonding positioning step, before the optical member F1X is bonded to the liquid crystal panel P, inspection data in the direction of the optical axis of the liquid crystal panel P and the inspection data of the optical member F1X And the relative position of the liquid crystal panel P and the optical member F1X is determined based on both of the axial inspection data.

(Second Embodiment)

Hereinafter, the configuration of the film bonding system 2 according to the second embodiment of the present invention will be described. Fig. 6 is a diagram showing a schematic configuration of the film bonding system 2 of the present embodiment. In the present embodiment, constituent elements common to those of the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the first embodiment, the case where the width and length of the optical member F1X joined by the joining apparatuses 13 and 17 are equal to those in the display region P4 of the liquid crystal panel P has been described as an example. On the other hand, in the present embodiment, there is provided a cutting device for separating a surplus portion of a sheet after the sheet piece (having a larger width and longer length) than the display area P4 is bonded to the liquid crystal panel P, In this respect, this embodiment is very different from the first embodiment.

In the present embodiment, the first and second optical members F11 and F12 are separated from the first and second sheet pieces F1m and F2m (hereinafter sometimes collectively referred to as sheet pieces FXm) And a surplus portion outside the joint surface of the liquid crystal panel P to which the sheet piece FXm is bonded and the sheet piece FXm.

The film bonding system 2 of the present embodiment is provided with the first alignment device 11, the first dust collecting device 12, the first bonding device 13, the first detecting device 41, the first cutting device 31 The second detecting device 42, the second cutting device 32, and the control device 30 are connected to the first aligning device 15, the second aligning device 20, the second collecting device 16, the second joining device 17, Device 40 as shown in Fig.

In the present embodiment, the first joining apparatus 13 is a sheet joining apparatus in which a sheet piece of a bonded sheet F5 cut in a predetermined size (a first sheet piece F1m ).

In the present embodiment, the sections sandwiched between the pair of perforated lines L1 and L2 adjacent to each other in the longitudinal direction in the optical member sheet FX are formed such that one sheet piece FXm in the bonded sheet F5 (See FIG. 5). The sheet piece FXm is a sheet piece of the optical member sheet FX having a size larger than the display area P4 of the liquid crystal panel P. [

The first sheet piece F1m separated from the separator F3a by the knife edge 22d in the first joining apparatus 13 is separated from the liquid crystal panel P in a state of being attracted to the first alignment apparatus 11. [ And is introduced between the pair of joining rollers 23a of the press-fitting roll 23 while overlapping the lower surface of the joining roller 23. [ The first sheet piece F1m is a sheet piece of the first optical member sheet F1 having a size larger than the display area P4 of the liquid crystal panel P. [

In the fitting press roll 23, the liquid crystal panel P and the first sheet piece F1m are superposed and introduced into the gap. These liquid crystal panels P and the first sheet pieces F1m are fed to the downstream side of the upstream conveyor 6 in the panel conveying direction while being fitted and pressed by the respective joining rollers 23a. In the present embodiment, the first sheet piece F1m is joined to the backlight-side surface of the liquid crystal panel P by the fitting press roll 23, thereby forming the first sheet bonding body PS1.

The first detecting device 41 is provided on the downstream side of the first joining apparatus 13 in the panel conveying direction. The first detecting device 41 detects the edge of the junction between the liquid crystal panel P and the first sheet piece F1m (hereinafter sometimes referred to as the first joining face).

The first detecting device 41 detects the end edge ED of the first abutment surface SA1 in the four inspection areas CA provided on the conveyance path of the upstream conveyor 6 as shown in Fig. (The outer periphery of the bonding surface). Each inspection area CA is disposed at a position corresponding to the four corner portions of the first joint surface SA1 having a rectangular shape. The end edge ED is detected for each liquid crystal panel P conveyed on the line. The data of the end edge ED detected by the first detecting device 41 is stored in a storage unit (not shown).

Here, the " bonding surface between the liquid crystal panel P and the sheet piece FXm " refers to a surface facing the sheet piece FXm of the liquid crystal panel P, and the " outer circumference of the bonding surface " And the outer periphery of the substrate on the side where the sheet piece FXm is joined in the liquid crystal panel P. [

The arrangement position of the inspection area CA is not limited to this. For example, each inspection area CA may be disposed at a position corresponding to a part of each side of the first abutment surface SA1 (for example, the center of each side).

11 is a schematic diagram of the first detection device 41. Fig.

In Fig. 11, for convenience sake, the side of the first sheet of the first sheet of yarn piecing assembly PS1 on which the first sheet flakes F1m are joined is referred to as the upper side, and the structure of the first detecting device 41 is shown in the upside down.

11, the first detecting device 41 includes an illumination light source 44 for illuminating an end edge ED, and an illumination light source 44 for illuminating the end edge ED with respect to a normal direction of the first abutment surface SA1. 1 that picks up an image of the end edge ED from the side where the first sheet piece F1m of the first sheet of weft ply body PS1 is joined, 43).

The illumination light source 44 and the imaging device 43 are arranged at the four inspection regions CA (positions corresponding to the four corner portions of the first joint surface SA1) shown in Fig. 10, respectively.

The angle? Between the normal of the first abutment surface SA1 and the normal of the image pickup surface 43a of the image pickup device 43 (hereinafter referred to as the tilt angle? Of the image pickup device 43) It is preferable to set such that no discrepancy or burr or the like at the time of panel separation falls into the visual field of view of the panel. For example, when the end face of the second substrate P2 is outwardly shifted from the end face of the first substrate P1, the inclination angle [theta] 2 is set so that the end edge of the substrate P2 does not enter.

The inclination angle? Of the image pickup device 43 is a distance H between the first abutment surface SA1 and the center of the image pickup surface 43a of the image pickup device 43 H) "). For example, when the height H of the image pickup device 43 is not less than 50 mm and not more than 100 mm, the tilt angle? Of the image pickup device 43 is preferably set to an angle in a range of 5 ° to 20 ° . However, if the shift amount is known empirically, the height H of the image pickup device 43 and the tilt angle? Of the image pickup device 43 can be obtained based on the shift amount. In this embodiment, the height H of the image pickup device 43 is 78 mm and the inclination angle? Of the image pickup device 43 is set to 10 degrees.

The illumination light source 44 and the image pickup device 43 are fixedly arranged in the respective inspection areas CA.

The illumination light source 44 and the imaging device 43 may be arranged to be movable along the end edge ED of the first abutment surface SA1. In this case, only one illumination light source 44 and one imaging device 43 may be provided. The illumination light source 44 and the image pickup device 43 can be moved to a position where the end edge ED of the first abutment surface SA1 can be easily picked up.

The illumination light source 44 is arranged on the side opposite to the side where the first sheet piece F1m of the first optical member joined body PA1 is joined. The illumination light source 44 is disposed in an inclined posture outside the first abutment surface SA1 with respect to the normal direction of the first abutment surface SA1 with respect to the end edge ED. In this embodiment, the optical axis of the illumination light source 44 and the normal line of the imaging surface 43a of the imaging device 43 are parallel.

The illumination light source may be disposed on the side where the first sheet piece F1m of the first optical member joined body PA1 is joined.

The normal line of the image pickup surface 43a of the image pickup device 43 and the optical axis of the illumination light source 44 may be slightly obliquely crossed.

12, each of the image pickup device 43 and the illumination light source 44 may be disposed at a position overlapping the end edge ED along the normal direction of the first abutment surface SA1. The distance H1 between the first abutment surface SA1 and the center of the image pickup surface 43a of the image pickup device 43 (hereinafter referred to as the height H1 of the image pickup device 43) And the end edge ED of the end portion (edge) ED. For example, the height H1 of the image pickup device 43 is preferably set in a range of 50 mm to 150 mm.

The cut position of the first sheet piece F1m is adjusted based on the detection result of the end edge ED of the first contact surface SA1. The control device 40 (see Fig. 6) acquires the data of the end edge ED of the first joint surface SA1 stored in the storage section, and the first optical member F11 is located on the side of the liquid crystal panel P And the cut position of the first sheet piece F1m is determined such that it does not escape outward (outside the first abutting surface SA1). The first cutting device 31 cuts the first sheet piece F1m at the cut position determined by the controller 40. [

Returning to Fig. 6, the first cutting device 31 is provided on the downstream side of the first detecting device 41 in the panel transportation direction. The first cutting device 31 cuts the laser beam along the edge portion ED so that the portion of the first sheet member SA1 that is outwardly projected from the first optical member joined body PA1 to the outside of the first joining surface SA1, (The excess portion of the first sheet member F1m) is separated to form an optical member (first optical member F11) having a size corresponding to the first abutment surface SA1. Here, the first cutting device 31 corresponds to the cutting device described in the claims.

Here, the " size corresponding to the first bonding surface SA1 " is equal to or smaller than the size of the display region P4 of the liquid crystal panel P, the outer size of the liquid crystal panel P .

The excess portion of the first sheet piece F1m is separated from the first sheet piece bonding body PS1 by the first cutting device 31 so that the first optical member F11 is provided on the backlight side surface of the liquid crystal panel P, The first optical member joined body PA1 is formed. At this time, the first optical member joined body PA1 and the surplus portion of the first sheet member F1m, which is cut out in the form of a frame and cut off the portion corresponding to the first abutting surface SA1 (first optical member F11) Respectively. The excess portion separated from the first sheet piece F1m is peeled and recovered from the liquid crystal panel P by a peeling apparatus not shown.

Here, the " portion corresponding to the first contact surface SA1 " is a region which is equal to or larger than the size of the display region P4 and smaller than the size of the external shape of the liquid crystal panel P, . In this embodiment, in the three sides of the liquid crystal panel P having a rectangular shape in plan view except for the functional portion, the excess portion is laser cut along the outer periphery of the liquid crystal panel P, The surplus portion is laser-cut at a position appropriately entered from the outer periphery of the liquid crystal panel P toward the display region P4. For example, when the portion corresponding to the first junction surface SA1 is the junction surface of the TFT substrate, the display region P4 ) At a position offset by a predetermined amount.

In the present embodiment, the second joining apparatus 17 is a sheet joining apparatus in which a sheet piece (second sheet) F5 of a bonded sheet F5 cut to a predetermined size is formed on the lower surface of the first optical member joined body PA1, Piece F2m).

The first optical member joined body PA1 and the second sheet piece F2m are provided in the gap between the pair of joining rollers 23a of the press-fitting roll 23 (the joining position of the second joining device 17) Overlapping. The second sheet piece F2m is a sheet piece of the second optical member sheet F2 having a size larger than the display area P4 of the liquid crystal panel P. [

The first optical member joined body PA1 and the second sheet piece F2m are fed to the downstream side of the downstream conveyor 7 in the panel conveying direction while being fitted and pressed by the respective joining rollers 23a. The surface of the display surface side of the liquid crystal panel P (the surface opposite to the surface of the first optical member joined body PA1 bonded with the first optical member F11) And the second sheet piece joined body PS2 is formed by joining the second sheet piece F2m to the second sheet piece joined body PS2.

The second detecting device 42 is provided on the downstream side of the second joining device 17 in the panel conveying direction. The second detecting device 42 detects the edge of the junction of the liquid crystal panel P and the second sheet piece F2m (hereinafter sometimes referred to as the second bonding surface). The data of the end edge detected by the second detecting device 42 is stored in a storage unit (not shown).

The cut position of the second sheet piece F2m is adjusted based on the detection result of the end edge of the second joining face. The control device 40 (see Fig. 6) acquires the data of the end edge of the second joint surface stored in the storage section, and the second optical member F12 is located outside the liquid crystal panel P The cut position of the second sheet piece F2m is determined so as to be a size that does not escape to the outside. The second cutting device 32 cuts the second sheet piece F2m at the cut position determined by the control device 40. [

The second cutting device 32 is provided on the downstream side of the second detecting device 42 in the panel transportation direction. The second cutting device 32 cuts the laser beam along the end edge of the second joint surface to form a second sheet piece (hereinafter, referred to as " second sheet piece ") of the portion projecting outward from the second joint surface PA2, F2m (the excess portion of the second sheet member F2m) are separated to form an optical member (second optical member F12) having a size corresponding to the second joining face.

Here, the " size corresponding to the second bonding surface " means a size equal to or smaller than the size of the display region P4 of the liquid crystal panel P and the outer shape (outline viewed from the plane) of the liquid crystal panel P Point.

The excess portion of the second sheet piece F2m is separated from the second sheet bonding assembly PS2 by the second cutting device 32 so that the second optical member F12 is provided on the surface of the liquid crystal panel P on the display surface side, And the second optical member joined body PA2 (optical member joined body) in which the first optical member F11 is joined to the backlight side surface of the liquid crystal panel P is formed. At this time, the excess portion of the second sheet member F2m, which is cut out of the second optical member joined body PA2 and the portion corresponding to the second abutting surface (second optical member F12), is removed . The excess portion separated from the second sheet piece F2m is peeled and recovered from the liquid crystal panel P by a peeling apparatus not shown.

Here, the " portion corresponding to the second bonding surface " is a region which is equal to or larger than the size of the display region P4 and smaller than the size of the outer shape of the liquid crystal panel P, . In the present embodiment, surplus portions are laser cut along the outer periphery of the liquid crystal panel P at four sides in a rectangular liquid crystal panel P in plan view. For example, when the portion corresponding to the second bonding surface is the bonding surface of the CF substrate, there is no portion corresponding to the functional portion, so that the liquid crystal panel P is cut along the outer periphery of the liquid crystal panel P, do.

In the present embodiment, the first cutting device 31 is provided on the surface (the first abutting surface SA1) of the liquid crystal panel P and the first sheet piece F1m detected by the first detecting device 41, The first sheet piece F1m is cut along the outer periphery of the first sheet piece F1m. The second cutting device 32 is disposed along the outer periphery of the joining face (second joining face) of the liquid crystal panel P and the second sheet piece F2m detected by the second detecting device 42, The piece (F2m) is cut.

Here, the first cutting device 31 and the second cutting device 32 are CO ₂ laser cutters, for example. The first cutting device 31 and the second cutting device 32 cut the sheet piece FXm bonded to the liquid crystal panel P into an endless shape along the outer periphery of the display area P4.

The size of the surplus portion of the sheet piece FXm (the size of the portion projecting to the outside of the liquid crystal panel P) is appropriately set according to the size of the liquid crystal panel P. [ For example, when the sheet piece FXm is applied to a liquid crystal panel P having a small to large size of 5 to 10 inches, one side of the sheet piece FXm and the other side of the liquid crystal panel P ) Is set to a length ranging from 2 mm to 5 mm.

In this embodiment, the storage unit is functionally provided with a first alignment device 11, a first dust collector 12, a first bonding device 13, a first detection device 41, a first cutting device 31 Of the operation of the second cutting device 32, the second aligning device 20, the second dust collecting device 16, the second joining device 17, the second detecting device 42, A storage area for storing the program software in which the control sequence is described, and various other storage areas are set.

Hereinafter, an example of a method of determining the joining position (relative joining position) of the sheet piece FXm with respect to the liquid crystal panel P will be described with reference to Fig.

First, as shown in Fig. 7A, a plurality of inspection points CP are set in the width direction of the optical member sheet FX, and at each inspection point CP, Direction. The timing for detecting the optical axis may be the time when the master roll R1 is manufactured or may be between the master roll FX and the optical member sheet FX until they are half-cut. The data in the optical axis direction of the optical member sheet FX is related to the position of the optical member sheet FX (position in the longitudinal direction and width direction of the optical member sheet FX) do.

The control device 40 acquires the data of the optical axis of each inspection point CP (inspection data of the in-plane distribution of the optical axis) from the storage device and obtains the optical member sheet FX of the portion where the sheet piece FXm is cut, (The region delimited by the perforated line CL) is detected.

For example, as shown in Fig. 7 (b), the angle between the direction of the optical axis and the edge line EL of the optical member sheet FX is detected for each inspection point CP, (= (Θmax + θmin) / 2) of the maximum deviation angle θmax and the minimum deviation angle θmin when the large angle (maximum deviation angle) is θmax and the smallest angle (minimum deviation angle) As an average deviation angle. The direction of the average deviation angle? Mid with respect to the edge line EL of the optical member sheet FX is detected as the direction of the average optical axis of the optical member sheet FX. The shift angle is calculated, for example, by making the left turn direction positive and the right turn direction negative relative to the edge line EL of the optical member sheet FX.

The direction of the average optical axis of the optical member sheet FX detected by the above method is set to a predetermined angle with respect to the long side or the short side of the display region P4 of the liquid crystal panel P, The joining position (relative joining position) of the sheet member FXm is determined. For example, when the design of the optical member F1X is such that the direction of the optical axis of the optical member F1X is set at 90 degrees with respect to the long side or the short side of the display region P4, The sheet piece FXm is bonded to the liquid crystal panel P so that the direction is parallel to the long side or the short side of the display area P4.

The cutting devices 31 and 32 described above detect the outer periphery of the display area P4 of the liquid crystal panel P by detecting means such as a camera and display the sheet piece FXm bonded to the liquid crystal panel P And is cut endlessly along the outer periphery of the region P4. The outer periphery of the display area P4 is detected by picking up an edge of the liquid crystal panel P, an alignment mark formed on the liquid crystal panel P, or the outermost edge of the black matrix formed in the display area P4. A framing portion G (see Fig. 3) having a predetermined width for disposing a sealing agent for bonding the first and second substrates of the liquid crystal panel P is formed outside the display region P4, (Cut line: WCL) of the sheet piece FXm is performed by the cutting devices 31 and 32 within the width of the portion G. [ In the present embodiment, laser cutting is performed by the respective cutting devices 31 and 32 within the width of the framed portion G. [

As shown in Fig. 9, when the optical member sheet FZ made of resin is cut by laser, the cut end portion t may be swollen or wavy due to thermal deformation. Therefore, in the case where the optical member sheet FZ after laser cutting is bonded to an optical display component, bonding defects such as air entanglement and distortion are apt to occur in the optical member sheet FZ.

8, in this embodiment in which the sheet piece FXm is laser-cut after the sheet piece FXm cut out from the optical member sheet FX is bonded to the liquid crystal panel P, The cut end t of the liquid crystal panel P is backed up by the glass surface of the liquid crystal panel P. Therefore, no swelling or waviness of the cut end portion (t) of the sheet piece (FXm) does not occur, and no bonding failure occurs after bonding to the liquid crystal panel (P).

The swing width (tolerance) of the cutting line of the laser processing machine is smaller than that of the cutting edge. Therefore, in the present embodiment, the width of the framing G can be narrowed as compared with the case where the optical member sheet FX is cut using the cutting edge, so that the size and / or size of the liquid crystal panel P can be reduced The area P4 can be enlarged. This is effective for application to a high-performance mobile device, such as a smart phone or a tablet terminal of recent years, which requires enlargement of a display screen while limiting the size of a case.

In the case where the optical member sheet FX is joined to the liquid crystal panel P after being cut into sheet pieces that match the display area P4 of the liquid crystal panel P, It is difficult to narrow the width of the frame portion G of the liquid crystal panel P (it is difficult to enlarge the display area) because the dimensional tolerances of the liquid crystal panel P, the liquid crystal panel P, and the relative bonding positions thereof overlap.

On the other hand, the sheet member FXm of the optical member sheet FX larger than the display area P4 of the liquid crystal panel P is cut out from the optical member sheet FX, Only the swing tolerance of the cut line needs to be taken into consideration and the tolerance of the width of the frame portion G can be reduced (± 0.1 mm or less) when cutting is performed in accordance with the display region P4. Also in this respect, the width of the frame portion G of the liquid crystal panel P can be narrowed (the display region can be enlarged).

In addition, by cutting the sheet piece FXm with a laser instead of a blade, the force at the time of cutting is not inputted to the liquid crystal panel P, so that the edge of the substrate of the liquid crystal panel P is not cracked or scratched easily And the durability against the heat cycle and the like is improved. Similarly, since the liquid crystal panel P is not in contact with the liquid crystal panel P, the damage to the electric component attachment portion is also small.

As described above, an apparatus for manufacturing an optical member joined body according to the present embodiment is an apparatus for manufacturing a second optical member joined body PA2 obtained by bonding optical members F11 and F12 to a liquid crystal panel P,

A joining device for joining the sheet pieces F1m and F2m larger than the display area P4 to the liquid crystal panel P and a joining device for joining the sheet pieces F1m and F2m to the liquid crystal panel P. [ A controller 40 for determining the relative bonding positions of the liquid crystal panel P and the sheet pieces F1m and F2m on the basis of the inspection data in the optical axis direction of the liquid crystal panel P ) And the sheet piece (F1m, F2m) on the basis of the relative bonding position determined by the control device (40) before bonding the sheet pieces (F1m, F2m) to the liquid crystal panel And the sheet pieces F1m and F2m are bonded to the liquid crystal panel P after the alignment of the liquid crystal panel P and the sheet piece F1m, F1m and F2m and the surplus portion on the outer side are separated from each other so as to form a portion corresponding to the joint surface from the sheet pieces F1m and F2m Cut the optical member (F11, F12) of the respective group is to include a cutting device (31, 32). Further, after the sheet pieces F1m and F2m are respectively bonded to the liquid crystal panel P, the detection of the outer peripheral edges of the bonding surfaces of the liquid crystal panel P and the sheet pieces F1m and F2m And the cutting devices 31 and 32 include devices 41 and 42 for detecting the liquid crystal panel P and the sheet pieces F1m and F2m detected by the detecting devices 41 and 42, And cuts the sheet pieces F1m and F2m along the outer periphery of the face. The control device 40 controls the optical axis direction of the liquid crystal panel P in such a manner that the inspection data in the optical axis direction of the liquid crystal panel P and the inspection data of the sheet pieces F1m and F2m before bonding the sheet pieces F1m and F2m to the liquid crystal panel P, And F2m on the basis of both the inspection data in the optical axis direction of the liquid crystal panel P and the sheet pieces F1m and F2m.

According to this configuration, since the liquid crystal panel P and the sheet piece FXm are bonded after alignment based on inspection data in the direction of the optical axis of the liquid crystal panel P, The liquid crystal panel P can be aligned and bonded to the optical axis direction. As a result, the accuracy of the liquid crystal panel P in the optical axis direction with respect to the sheet piece FXm is increased, and the sharpness and contrast of the optical display device can be increased. It is also possible to manufacture an optical member joined body including a liquid crystal panel P having an arbitrary optical axis direction.

The optical axis direction of the optical member sheets F1 and F2 is changed according to the positions of the optical member sheets F1 and F2 by bonding the optical member sheets F1 and F2 to the liquid crystal panel P after alignment based on inspection data in the optical axis direction It is possible to align and bond the liquid crystal panel P in alignment with the optical axis direction. Accordingly, the accuracy of the sheet member FXm in the optical axis direction with respect to the liquid crystal panel P is increased, and the sharpness and contrast of the optical display device can be increased. It is also possible to manufacture an optical member joined body including an optical member F1X having an arbitrary optical axis direction.

The liquid crystal panel P and the sheet pieces F1m and F2m to which the sheet pieces F1m and F2m are bonded after the sheet pieces F1m and F2m larger than the display region P4 are bonded to the liquid crystal panel P, And by separating the surplus portion disposed outside the portion corresponding to the bonding surface from the sheet pieces F1m and F2m bonded to the liquid crystal panel P, The optical members F11 and F12 can be formed on the surface of the liquid crystal panel P. [ This allows the optical members F11 and F12 to be installed to the edge of the display region P4 with good accuracy and to narrow the framing portion G outside the display region P4 to enlarge the display region and miniaturize the device can do.

Even if the optical axis direction changes depending on the position of the sheet pieces F1m and F2m by joining the sheet pieces F1m and F2m larger than the display area P4 to the liquid crystal panel P, The liquid crystal panel P can be aligned and bonded. This can improve the accuracy of the optical members F11 and F12 in the optical axis direction with respect to the liquid crystal panel P, thereby improving the sharpness and contrast of the optical display device.

The cutting devices 31 and 32 do not apply force to the liquid crystal panel P as compared with the case where the sheet pieces F1m and F2m are cut into the blade by laser cutting the sheet pieces F1m and F2m , Cracks and irregularities are not easily generated, and stable durability of the liquid crystal panel (P) can be obtained. Furthermore, as compared with the case where the sheet pieces F1m and F2m before joining are laser-cut alone, it is possible to prevent the occurrence of defective joining.

Here, the manufacturing method of the optical member joined body in this embodiment is a manufacturing method of the second optical member joined body PA2 in which the optical members F11 and F12 are bonded to the liquid crystal panel P, (F1m, F2m) larger than the display area (P4) of the liquid crystal panel (P4) before bonding the sheet pieces (F1m, F2m) to the liquid crystal panel (P) P relative to each other on the basis of inspection data in the direction of the optical axis of the liquid crystal panel P and the sheet pieces F1m and F2m, Wherein alignment is performed between the liquid crystal panel P and the sheet pieces F1m and F2m based on the relative bonding positions determined in the relative bonding positioning process before bonding the sheet pieces F1m and F2m, (F1m, F2m) on the liquid crystal panel (P) A portion corresponding to the bonding surface of the liquid crystal panel P and the sheet pieces F1m and F2m and a surplus portion outside the liquid crystal panel P are separated from each other so as to be separated from the sheet pieces F1m and F2m to the bonding surface And cutting the optical members F11 and F12 of corresponding sizes, respectively. Further, after the sheet pieces F1m and F2m are respectively bonded to the liquid crystal panel P, the detection of the outer peripheral edges of the bonding surfaces of the liquid crystal panel P and the sheet pieces F1m and F2m (F1m, F2m) along the outer periphery of the joining face of the liquid crystal panel (P) and the sheet pieces (F1m, F2m) detected in the detecting process in the cutting process, Respectively. In the relative joint positioning step, inspection data in the direction of the optical axis of the liquid crystal panel P and inspection data in the optical axis direction of the sheet pieces F1m and F2m are formed before the sheet pieces F1m and F2m are bonded to the liquid crystal panel P, And F2m on the basis of both the inspection data in the optical axis direction of the liquid crystal panel P and the sheet pieces F1m and F2m.

In the film bonding system of the above embodiment, the outer circumferences of the plurality of liquid crystal panels P and the bonding surfaces are detected by using the detection device, and based on the detected outer circumferences, The cutting position of one sheet may be set. Accordingly, the optical member of a desired size can be separated regardless of the individual differences in the size of the liquid crystal panel P or the sheet member, so that quality fluctuations due to individual differences in size of the liquid crystal panel P or sheet member are eliminated, The frame area around the area can be reduced to enlarge the display area and to miniaturize the device.

In the above embodiment, as the configuration of the joining apparatuses 13 and 17, a configuration in which the joining process of the liquid crystal panel P and the optical member F1X (or the sheet member FXm) is performed by the fitting press roll 23 However, the present invention is not limited to this. For example, the joining apparatus is configured such that the optical member F1X (or sheet member FXm) peeled off from the separator is adhered to the joining portion such as the joining head or the joining drum once the transfer chain and the joining portion is aligned with the liquid crystal panel P And the optical member F1X (or the sheet piece FXm) adhered to the joining portion may be bonded to the liquid crystal panel P.

In the above embodiment, the roll-to-panel method in which the optical member sheet unwound from the roll is cut to a predetermined size and joined to the optical display component has been described. However, the present invention is not limited thereto. For example, the present invention is also applicable to a chip-to-panel method in which an optical member cut into a sheet-like shape is bonded to an optical display component.

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

1, 2: film bonding system (apparatus for manufacturing optical member joined body), 11: first alignment device, 12: first dust collector, 13: first bonding device, 15: A first cutting device (cutting device), a second cutting device (cutting device), a second cutting device (cutting device), a second aligning device (bonding device) F2 is a second optical member sheet, F11 is a first optical member sheet, F2 is a second optical member sheet, F2 is a first optical member sheet, F6: Polarizer, F7: First film, F8: Second optical member, F12: Second optical member, F1a: Optical member main body, F2a: Adhesive layer, F3a: Separator, F4a: Surface protective film, F5: P2: first sheet piece, F2m: second sheet piece, F1X: optical member, FX: optical member sheet, FXm: sheet piece, P: liquid crystal panel (optical display component) A second substrate, P3: a liquid crystal layer, P4: a display region, PA1: The conjugate material, PA2: a second optical member bonded, PS1: first sheet strip bonded, PS2: the second sheet strip bonded, SA1: the first bonding surface (bonding surface)

Claims (10)

A control device for determining a relative bonding position of the optical member with respect to the optical display component based on inspection data in the optical axis direction of the optical display component,
An alignment device for aligning the optical display component and the optical member based on the determined relative bonding position,
And a bonding apparatus for bonding the optical member to the optical display component. The method according to claim 1,
Wherein the control device determines the relative bonding position based on both inspection data in the optical axis direction of the optical display component and inspection data in the optical axis direction of the optical component. A control device for determining a relative bonding position of the sheet member larger than the display area of the optical display component with respect to the optical display component based on the inspection data in the optical axis direction of the optical display component,
An aligning device for aligning the optical display component and the sheet member based on the determined relative bonding position,
A joining device for joining the sheet piece to the optical display part;
And a cutting device for separating a surplus portion outside the optical display component and a portion corresponding to the bonding surface from the bonded body of the sheet biasing member. The method of claim 3,
And an image pickup device for picking up an image including the optical display component in a plan view after the sheet piece is bonded to the optical display component,
Wherein the cutting device cuts the sheet piece based on the image. The method according to claim 3 or 4,
Wherein the control device determines the relative joining position of the sheet piece to the optical display part based on both of the inspection data in the optical axis direction of the optical display part and the inspection data in the optical axis direction of the sheet piece, (2). A relative joining position determining step of determining a relative joining position of the optical member with respect to the optical display component based on the inspection data in the optical axis direction of the optical display component,
An alignment step of aligning the optical display component and the optical member based on the determined relative bonding position,
And a joining step of joining the optical member to the optical display component. The method according to claim 6,
The relative bonding position determining step may determine the relative bonding position of the optical member with respect to the optical display component based on both inspection data in the optical axis direction of the optical display component and inspection data in the optical axis direction of the optical component Wherein the optical member is a glass substrate. A relative joining position determining step of determining a relative joining position of the sheet member larger than the display area of the optical display component with respect to the optical display component based on the inspection data in the optical axis direction of the optical display component,
An alignment step of aligning the optical display component and the sheet member based on the determined relative bonding position,
A joining step of joining the sheet piece to the optical display part;
And a cutting step of separating a surplus portion outside the optical display part and a portion corresponding to the bonding surface from the bonded body of the sheet piece. 9. The method of claim 8,
And an image pickup step of picking up an image including the optical display part in a plan view after the sheet piece is bonded to the optical display part,
And the sheet piece is cut based on the image in the cutting step. 10. The method according to claim 8 or 9,
The relative bonding position determining step determines the relative bonding position of the sheet member to the optical display component based on both of the inspection data in the optical axis direction of the optical display component and the inspection data in the optical axis direction of the sheet component Of the optical member.

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