KR20180024346A - Manufacturing method and apparatus of optical panel - Google Patents

Abstract

The present invention discloses a manufacturing apparatus of an optical panel. The disclosed manufacturing apparatus of an optical panel comprises: a film separation portion for separating an optical film from a release film and a laminate of the optical film; a film measuring portion for measuring a first location where is a location with respect to a first direction of a front end portion of the optical film separated in the film separation portion, and a second location where is a location with respect to a second direction different from the first direction; and a control portion for controlling the location of a panel attached with the optical film based on the location of the front end portion of the optical film measured in the film measuring portion.

Description

TECHNICAL FIELD [0001] The present invention relates to an optical panel manufacturing apparatus and an optical panel manufacturing apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical panel manufacturing apparatus and a manufacturing method thereof, and more particularly, to an optical panel manufacturing apparatus and a manufacturing method capable of bonding an optical film and a panel at precise positions.

In general, a liquid crystal display panel, which is a type of optical panel, corresponds to a display portion of a liquid crystal display, and is manufactured by joining an optical film having a polarizing film and a rectangular panel.

Such a manufacturing method of a liquid crystal display panel includes a sheet to panel (STP) method in which a sheet of optical film is joined to a panel, a roll to panel (RTP) method in which an optical film wound on a roll is fed out, ) Method.

In the RTP system, an optical film bonded to a release film by a pressure-sensitive adhesive is continuously fed from a roll, an optical film is separated from a release film, and then an optical film is bonded to the panel using a bonding roller or the like.

Particularly, in the case of the RTP system, since the film fed from the roll is continuously fed and bonded to the panel, the liquid crystal display panel can be continuously manufactured, and productivity of the liquid crystal display panel can be improved.

However, it is difficult to control the position, moving speed, and the like of the optical film, and it is difficult to accurately bond the optical film and the panel due to the deformation of the film due to tensile force and residual stress acting on the optical film. Therefore, there is a need for improvement.

The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2012-0023577 (published on Mar. 13, 2012, entitled " Method and apparatus for sequentially attaching an optical film having a polarizing film to a rectangular panel) have.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide an optical panel manufacturing method capable of precisely measuring the position or shape of an optical film, And a manufacturing method thereof.

An optical panel manufacturing apparatus according to the present invention comprises: a film separator for separating the optical film from a laminate of a release film and an optical film; A film measuring unit for measuring a first position, which is a position with respect to a first direction of the optical film front end separated by the film separating unit, and a second position, which is a position with respect to a second direction different from the first direction; And a controller for adjusting a position of the panel to be bonded to the optical film based on the position of the optical film front end measured by the film measuring unit.

In the present invention, the film measuring section may include: an image capturing section for capturing an image of the optical film front end portion and measuring the first position of the optical film front end portion; And a distance measuring unit measuring a distance to the optical film and measuring the second position.

In the present invention, the distance measuring unit may be movable in a direction parallel to the first direction.

In the present invention, the distance measuring unit may include: a measurement guide unit extending in a direction parallel to the first direction; And a distance measurement sensor part movably coupled to the measurement guide part.

In the present invention, the film measuring unit may measure the first position and the second position by rotating the distance measuring sensor.

In the present invention, the film measuring unit is characterized in that a plurality of film measuring units are arranged in the width direction of the optical film.

In the present invention, the film measuring section measures the first position and the second position by picking up a side end portion of the optical film.

In the present invention, the first direction is a longitudinal direction of the optical film in a state in which no curl is generated in the optical film separated from the film separating portion.

In the present invention, the second direction is a direction perpendicular to the first direction.

A method of manufacturing an optical panel according to the present invention includes: a film separating step of separating the optical film from a laminate of a release film and an optical film; A film measuring step of measuring a first position, which is a position with respect to a first direction of the optical film front end separated in the film separating step, and a second position, which is a position with respect to a second direction different from the first direction; And a controller for calculating a position of a tip of the optical film when no warpage is generated in the optical film based on a position of the tip of the optical film measured in the film measuring step, And a panel position adjusting step of adjusting the panel position.

In the present invention, the film measuring step may include: a first position measuring step of picking up an image of the optical film front end portion and measuring the first position of the optical film front end portion; And a second position measuring step of measuring a distance to the optical film and measuring the second position.

In the present invention, the first direction is a longitudinal direction of the optical film in a state in which no curl is generated in the optical film, and the second direction is a direction perpendicular to the first direction .

The apparatus and method for manufacturing an optical panel according to the present invention measure the curl of an optical film and adjust the bonding position of the panel, so that the optical film and the panel can be bonded accurately.

1 is a conceptual diagram schematically showing an optical panel manufacturing apparatus according to an embodiment of the present invention.
FIG. 2 is a view showing the diagram 'A'.
FIG. 3 is a perspective view showing a state 'A'.
4 is a front view showing a film measuring unit according to a second embodiment of the present invention.
5 is a perspective view showing a film measuring unit according to a second embodiment of the present invention.
6 is a front view showing a film measuring unit according to a third embodiment of the present invention.
7 is a perspective view showing a film measuring unit according to a third embodiment of the present invention.
8 is a graph showing a measurement error according to a position of an optical film front end in an optical panel manufacturing apparatus according to an embodiment of the present invention.
9 is a graph showing the shape of an optical film and the length of an optical film in an optical panel manufacturing apparatus according to an embodiment of the present invention.
10 is a flowchart illustrating an optical panel manufacturing method according to an embodiment of the present invention.

Hereinafter, an embodiment of an optical panel manufacturing apparatus and a manufacturing method according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is a conceptual diagram schematically showing an optical panel manufacturing apparatus according to an embodiment of the present invention. 1, an optical panel manufacturing apparatus 1 according to an embodiment of the present invention includes a conveying unit 100, a cutting unit 200, a film separating unit 300, a film measuring unit 400, The optical film 11 is separated from the laminated body 10 of the optical film 11 and the release film 13 including the optical film 500 and the control unit 600 and the front end portion 11a The position of attachment of the optical film 11 to the panel 20 is prevented from being changed by adjusting the attachment position of the panel 20 based on the position of the optical film 11 and the panel 20.

Hereinafter, the optical panel manufacturing apparatus 1 will be described as an example of manufacturing an optical panel 30 such as a liquid crystal display panel. However, in the technical idea of bonding a second member such as a film to a first plate- Of course, be manufactured.

The optical film 11 constituting the optical panel 30 is formed by a polarizer and a polarizer protective film on one side or both sides of the polarizer without adhesive or adhesive. The polarizer usually has an absorption axis in the stretching direction.

The main body of the optical film 11 may include, for example, a retardation film such as? / 4,? / 2, a time compensation film, a brightness enhancement film, a surface protective film, . ≪ / RTI >

The polarizer is obtained, for example, by dyeing, crosslinking, stretching and drying a polyvinyl alcohol-based film. The respective processes of dyeing, crosslinking, and stretching of the polyvinyl alcohol-based film are not required to be performed individually, and may be performed simultaneously, and the order of each process may be arbitrary.

As the polyvinyl alcohol film, a polyvinyl alcohol film subjected to swelling treatment may also be used. In general, a polyvinyl alcohol film is dipped in a solution containing iodine or a dichroic dye to stain iodine or a dichroic dye and adsorbed thereto, and a solution containing boric acid or borax at a stretching magnification of 3 to 7 times After uniaxial stretching, it is washed and dried.

The pressure-sensitive adhesive is not particularly limited, and examples thereof include acrylic pressure-sensitive adhesives, silicone pressure-sensitive adhesives, and urethane pressure-sensitive adhesives. The layer thickness of the pressure-sensitive adhesive is preferably in the range of, for example, 10 탆 to 50 탆.

The release film 13 may be a plastic film, for example, a polyethylene terephthalate film, a polyolefin film, or the like. Further, the release film 13 may be coated with an appropriate releasing agent such as silicone, long-chain alkyl, fluorine-based or molybdenum sulfide, if necessary.

A panel 20 exemplified by a liquid crystal cell is formed by sealing a liquid crystal layer between a pair of substrates arranged opposite to each other. The panel 20 can use any type of liquid crystal cell, and in particular, a liquid crystal cell of a vertical alignment (VA) mode or an in-plane switching (IPS) mode can be used to realize high contrast.

The optical panel 30 is formed by joining the optical film 11 to one side or both sides of the panel 20, and a driving circuit is built in if necessary.

The transfer unit 100 transfers the layered product 10 of the release film 13 and the optical film 11. In the present embodiment, the laminate 10 is fed out in the state of being wound around the laminate roll 40 and is fed to the conveying section 100, and after the release film 13 is removed, Lt; / RTI >

The laminate 10 in this embodiment is formed by bonding the optical film 11 and the release film 13 and is wound on the laminate roll 40 to enable continuous supply of the optical film 11, Thereby preventing the adhesive applied to the adhesive layer 11 from being lost. In this embodiment, the feeding unit 100 includes a feeding unit 110, a guide unit 130, and a tension control unit 150.

The feeding part 110 rotates in contact with the laminate 10 to move the laminate 10. A plurality of guide portions 130 are provided and contact the laminate 10 to change the moving direction of the laminate 10. [

The tension control unit 150 is disposed between the feeding unit 110 and the guide unit 130 and is reciprocally movable in a state of being in contact with the laminate 10 to adjust the tension acting on the laminate 10. [ In this embodiment, the tension controller 150 is illustrated as a dancer roll, but is not limited thereto.

In the present embodiment, the optical film 11 is exemplified as a polarizing film having an absorption axis formed in the width direction or the longitudinal direction, and is bonded to the panel 20 exemplified by a liquid crystal cell. In the present embodiment, a pair of optical films 11 are provided, and the absorption axes are cross-nicely attached to the panel perpendicularly to both sides of the panel 20.

The cutting portion 200 cuts the optical film 11 combined with the release film 13. The cutting unit 200 includes the cutting unit 210 and the suction unit 230 so that the release film 13 is sucked and fixed by the suction unit 230, The laminated body 10 is half-cut by cutting the laminated body 11 in the width direction.

That is, by cutting only the optical film 11 except for the release film 13 in the laminate 10, the optical film 11 can be cut to a length corresponding to the panel 20, And at the same time, the cut optical film 11 is moved together with the release film 13 so that the optical film 11 can be continuously supplied.

As the cutting means 210, a cutter, a laser, or the like can be applied, and other methods can be applied as long as the optical film 11 can be cut in the width direction.

The film separator 300 separates the release film 13 from the laminate 10. In the present embodiment, the film separator 300 separates the optical film 11 from the release film 13 by folding the laminate 10 with the release film 13 inside.

As the film separator 300, a wedge-shaped member, a roller, or the like can be applied. The release film 13 separated by the film separating section 300 is wound around the release film winding roll 50.

FIG. 2 is a view showing a state 'A', and FIG. 3 is a perspective view showing a state 'A'.

2 and 3, the film measuring unit 400 measures the position of the front end 11a of the optical film 11 separated from the film separating unit 300 in the first direction (the direction of the reference X-axis in FIG. 2) 1 position x and a second position y that is a position with respect to a second direction different from the first direction (X axis direction) (the Y axis direction in FIG. 2), and measures the measured position value x , y) to the control unit 600.

Since the film measuring units 400, 400a, 400b and 400c measure the position of the front end 11a of the optical film 11 in a plurality of directions in this embodiment, the distance of the front end 11a of the optical film 11 is 2 Dimensional coordinate value or three-dimensional spatial coordinate value of the optical film 11 and the distance separating the distal end portion 11a of the optical film 11 from the film separation portion 300 and the distance separating the optical film 11 from the film separation portion 300, So that the curled degree can be measured.

The film measuring unit 400a includes the imaging unit 410a and the distance measuring unit 430a so that the first position x and the second position y of the distal end 11a of the optical film 11, And transmits the measurement result to the control unit 600.

In the present embodiment, the first direction (X-axis direction) means the longitudinal direction of the optical film 11 in a state where no curl is generated in the optical film 11 separated by the film separator 300 , The first position x is a distance that the optical film 11 is moved in a direction parallel to the first direction (X-axis direction) or the first direction (X-axis direction) with reference to the film separator 300, .

That is, assuming that the axis parallel to the first direction (X axis direction) is the X axis, the first direction (X axis direction) means the X axis direction, and the first position (x) corresponds to the X axis coordinate value.

The second direction (Y-axis direction) means a direction perpendicular to the first direction (X-axis direction). The end portion 11a of the optical film 11 is bent in the first direction (X-axis direction) due to the residual stress generated when the optical film 11 is bent by its own weight or separated from the release film 13 in the second direction The degree of warping in the second direction (Y-axis direction), that is, the absolute value of the second position y becomes larger as the degree of curling of the optical film 11 increases .

In the present embodiment, the second direction (Y-axis direction) corresponds to the Y-axis direction perpendicular to the X-axis direction, and the second position (y) corresponds to the Y- Axis coordinate value (y) of the Y-axis coordinate system 11a.

The imaging section 410a measures the first position x of the distal end portion 11a of the optical film 11 in such a manner as to take an image of the distal end portion 11a of the optical film 11. The image sensing unit 410a captures an image of the front end portion 11a of the optical film 11 in a direction perpendicular to the first direction (X-axis direction), a plane image substantially perpendicular to the Y-axis direction, (X) of the front end portion 11a of the optical film 11 by, for example, determining whether the optical film 11 is in the region of the optical film 11 due to the difference in chroma, brightness, ).

A variety of methods can be applied within a technical idea capable of measuring the first position x of the optical film 11 or the like in which the imaging unit 410a measures the area of the front end 11a of the optical film 11, It goes without saying that the present invention is not limited to the above-described embodiments.

The distance measuring unit 430a measures the second position y in such a manner that the distance to the optical film 11 is measured. In the first embodiment, the distance measuring unit 430a irradiates light such as a laser to the side of the optical film 11, receives reflected light or the like, analyzes the wavelength of the reflected light, and the time taken for the reflected light to reach The distance from the distance measuring unit 430a to the optical film 11 can be measured and the distance from the distance measuring unit 430a to the X axis and the distance from the distance measuring unit 430a to the optical film 11 To the second position (y).

The distance measuring unit 430a measures the distance to the distal end 11a of the optical film 11 while moving in a direction parallel to the first direction (X-axis direction). The distance measuring unit 430a measures the Y axis coordinate which is the distance to the optical film 11 while moving in the X axis direction so that the curl of the optical film 11 can be measured.

The optical film 11 is formed on the basis of the distance to the optical film 11 or the distance to the optical film 11 immediately before the time point when the distance to the optical film 11 can not be measured The Y-axis value of the tip 11a of the tip portion 11a can be measured. In this embodiment, the distance measuring unit 430a includes a measurement guide unit 431a and a distance measuring sensor unit 433a.

The measurement guide portion 431a extends in the X axis direction parallel to the first direction (X axis direction), and the distance measurement sensor portion 433a is movably coupled to the measurement guide portion 431a.

Accordingly, since the distance measuring sensor 433a measures the distance to the optical film 11 while moving along the first direction (X-axis direction), the optical film 11 11) and the nearest point to the optical film 11 (when the distal end portion 11a of the optical film 11 is bent toward the distance measurement sensor portion 433a by its own weight or the like) (The distal end 11a of the optical film 11 is bent toward the opposite side of the distance measurement sensor portion 433a by residual stress or the like) of the distance from the optical film 11 to the optical film 11 Can be measured at a distance to the first end 11a.

FIG. 4 is a front view showing a film measuring unit according to a second embodiment of the present invention, and FIG. 5 is a perspective view showing a film measuring unit according to a second embodiment of the present invention.

4 and 5, in the second embodiment, the film measuring unit 400b includes a distance measuring sensor 410b and a sensor rotating unit 430b, and the sensor rotating unit 430b rotates the distance measuring sensor 410b The first position (x) and the second position (y) of the front end portion 11a of the optical film 11 are measured.

When the distance measuring sensor 410b is rotated, the distance to the optical film 11 measured by the distance measuring sensor 410b and the rotational angle of the distance measuring sensor 410b are calculated based on the rotational coordinates And can be converted into coordinate values of the first position (x) and the second position (y) of the front end portion 11a of the optical film 11 by a simple coordinate transformation.

According to the second embodiment, the position of the distal end portion 11a of the optical film 11, the shape of the optical film 11, and the like are measured through one distance measurement sensor 410b without applying the imaging portion 410a So that the structure of the device can be simplified.

FIG. 6 is a front view showing a film measuring unit according to a third embodiment of the present invention, and FIG. 5 is a perspective view showing a film measuring unit according to a third embodiment of the present invention.

6 and 7, in the third embodiment, the film measuring unit 400c picks up the side surface of the optical film 11 separated from the film separating unit 300 and detects the first position (x) and the second position y) is measured.

The film measuring unit 400c captures the side end image of the optical film 11 on the side of the optical film 11 and transmits the image to the control unit 600 so that the position of the film measuring unit 400c, The first position x and the second position x of the distal end portion 11a of the optical film 11 are determined based on the coordinates and the like of the front end portion 11a of the optical film 11 in the image of the front end portion 11a of the film 11, y) can be measured.

The film measuring unit 400c in the third embodiment can be positioned apart from both sides of the optical film 11 and can capture an image of the left front end 11a and the right front end 11a of the optical film 11 To the control unit 600 so as to reduce the measurement error of the front end portion 11a of the optical film 11 and to estimate the meandering angle and the like of the optical film 11. [

The control unit 600 adjusts the position of the panel 20 to be bonded to the optical film 11 based on the position of the front end 11a of the optical film 11 measured by the film measuring units 400, 400a, 400b, do.

8, when the optical film 11 is stretched in the first direction (X-axis direction) based on the position of the front end portion 11a of the optical film 11, The corrected first position (x + DELTA x) for the first position (x), i.e., the distance (l) separated from the film separator 300 by the optical film 11, So that the optical film 11 and the panel 20 can be accurately bonded.

8, a graph of the measurement error DELTA x with respect to the second position y can be obtained by various experiments, measurements, etc., when the distance separated by the film separator 300 is 30 mm, 600 calculates the corrected first position (x + [Delta] x) by calculating the measurement error [Delta] x inversely when the second position (y) is input and adding the measurement error [Delta] x to the first position can do.

When the optical film 11 is measured by the film measuring units 400, 400a, 400b, and 400c, the controller 600 determines the lengths of the film measuring units 400, 400a, 400b, and 400c (X +? X) on the XY coordinate plane, for example.

The calculation of the corrected first position (x +? X) from the data preliminarily inputted based on the position of the front end portion 11a of the optical film 11 is performed in the film separating section 300 at the tip 11a of the optical film 11, 400a, 400b, and 400c are measured while the film measuring unit 400, 400a, 400b, and 400c is measured. However, when the film measuring units 400, 400a, 400b, and 400c measure the deflection, 1 position (x + DELTA x) can be measured.

The joining roller unit 500 joins the optical film 11 separated from the release film 13 to the panel 20. [ The joining roller unit 500 includes the lower joining roll 510 and the upper joining roll 530 and is provided between the lower joining roll 510 and the upper joining roll 530 and between the panel 20 and the optical film The optical film 11 and the panel 20 are pressed and bonded by moving at least one of the lower bonding roll 510 and the upper bonding roll 530 in a state in which the optical film 11 and the upper bonding roll 530 are interposed.

The optical film 11 is bonded to the panel 20 by being pressed in contact with the panel 20 by the bonding roller unit 500 since the adhesive film is applied to the release film 13 and the adhesive surface.

At least one of the lower bonding roll 510 and the upper bonding roll 530 functions as a driving roller so that the panel 20 and the optical film 11 bonded together are bonded between the lower bonding roll 510 and the upper bonding roll 530 So that the panel 20 and the optical film 11 are bonded to each other.

In this embodiment, the lower bonding roll 510 is illustrated as a suction roll that sucks the outside air through holes formed in the outer circumferential surface, and adsorbs the optical film 11.

7 is a flowchart illustrating an optical panel manufacturing method according to an embodiment of the present invention. Referring to FIG. 7, an optical panel manufacturing method (S1) according to an embodiment of the present invention and effects will be described as follows.

The optical film manufacturing method (S1) according to the present embodiment includes the steps of separating a separated optical film (S100) including a film separating step (S100), a film measuring step (S200), a panel positioning step (S300) 11 is measured and the position of the panel 20 is adjusted based on the position of the measured optical film 11 and then the optical film 11 and the panel 20 are bonded.

In the film separating step (S100), the optical film (11) is separated from the release film (13) and the laminate (10) of the optical film (11). That is, when the laminate 10 is damaged from the laminate roll 40 on which the laminate 10 of the release film 13 and the optical film 11 is wound, the laminate 10 is conveyed by the conveyor 100 The optical film 11 is half-cut by the cutting portion 200 in the middle.

In the film measurement step S200, a first position x, which is a position with respect to the first direction (X-axis direction) of the front end portion 11a of the optical film 11 separated in the film separation step S100, (Y-axis direction), which is different from the first direction (X-axis direction). In this embodiment, the film measurement step S200 includes a first position measurement step S210 and a second position measurement step S230.

In the first position measurement step S210, an image of the distal end portion 11a of the optical film 11 is sensed and a first position x of the distal end portion 11a of the optical film 11 is measured. The first position x of the tip 11a corresponds to the position of the tip 11a in the first direction (X-axis direction) in the state where the optical film 11 is bent, that is, the X-axis coordinate value x.

In the second position measuring step (S230), the distance to the optical film (11) is measured and the second position (y) is measured. The second position y of the tip end 11a corresponds to the position of the tip end 11a in the second direction (Y-axis direction) in the state where the optical film 11 is bent, that is, the Y-axis coordinate value y.

In the panel position adjustment step S300, the controller 600 determines whether the optical film 11 is to be separated from the film separator 300 based on the position of the front end 11a of the optical film 11 measured in the film measuring step S200 The separated length (l) is measured and the position of the panel 20 to be bonded to the optical film 11 is adjusted based on the measured length.

The adjustment of the position of the panel 20 is implemented in such a manner that the control unit 600 controls the panel moving unit 60 to adjust the position where the panel 20 is joined and not only the positional adjustment of the panel 20 in the longitudinal direction , The widthwise movement of the panel 20, or the rotational movement of the panel 20.

When the position of the panel 20 is adjusted, the joining roller unit 500 is driven to press the optical film 11 and the panel 20 to join the optical film 11 and the panel 20 together.

Thus, the optical panel manufacturing apparatus 1 and the manufacturing method S1 according to the present embodiment can accurately measure the length of the optical film 11 in consideration of the curl of the optical film 11, ) And the panel 20 can be adjusted, so that the optical film 11 and the panel 20 can be bonded accurately.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Therefore, the technical scope of the present invention should be defined by the following claims.

1: Optical panel manufacturing apparatus 10: Laminate
11: Optical film 11a:
13: release film 20: panel
30: optical panel 40: laminated roll
50: Release film winding roll 60:
100; [0040]
130: guide part 150: tension control part
200: cutting portion 210: cutting means
230: absorption means 300: film separator
400, 400a, 400b, 400c: film measuring unit 410a:
430a: Distance measuring section 431a: Measurement guide section
433a; Distance measuring sensor 410b: distance measuring sensor
430b: sensor rotation part 500: joining roller part
510: Lower side bonding roll 530: Upside side bonding roll
600:

Claims (12)

A film separator for separating the optical film from the laminate of the release film and the optical film;
A film measuring unit for measuring a first position, which is a position with respect to a first direction of the optical film front end separated by the film separating unit, and a second position, which is a position with respect to a second direction different from the first direction; And
A controller for adjusting a position of the panel to be bonded to the optical film based on a position of the optical film front end measured by the film measuring unit;
And the optical panel manufacturing apparatus.
The apparatus according to claim 1,
An imaging section for imaging an image of the optical film front end portion and measuring the first position of the optical film front end portion; And
A distance measurement unit measuring a distance to the optical film and measuring the second position;
And the optical panel manufacturing apparatus.
The apparatus according to claim 2,
Wherein the optical panel is movable in a direction parallel to the first direction.
The apparatus according to claim 3,
A measurement guide part extending in a direction parallel to the first direction; And
A distance measuring sensor unit movably coupled to the measurement guide unit;
And the optical panel manufacturing apparatus.
The apparatus according to claim 1,
And the distance measurement sensor is rotated to measure the first position and the second position.
The optical panel manufacturing apparatus according to any one of claims 1 to 5, wherein a plurality of film measuring sections are arranged in the width direction of the optical film.
The apparatus according to claim 1,
And measures the first position and the second position by picking up a side end portion of the optical film.
6. The method according to any one of claims 1 to 5,
Wherein the optical film is a longitudinal direction of the optical film in a state in which no crul is generated in the optical film separated by the film separating portion.
9. The method of claim 8,
And a direction perpendicular to the first direction.
A film separating step of separating the optical film from a laminate of a release film and an optical film;
A film measuring step of measuring a first position, which is a position with respect to a first direction of the optical film front end separated in the film separating step, and a second position, which is a position with respect to a second direction different from the first direction; And
The controller calculates the position of the front end of the optical film when the optical film is not warped based on the position of the optical film front end measured in the film measuring step, Adjusting the panel position;
Wherein the optical panel comprises a transparent substrate.
11. The method of claim 10,
A first position measuring step of picking up an image of the optical film front end portion and measuring the first position of the optical film front end portion; And
A second position measuring step of measuring a distance to the optical film and measuring the second position;
Wherein the optical panel comprises a transparent substrate.
The method according to claim 10 or 11,
Wherein the first direction is a longitudinal direction of the optical film in a state in which no curl is generated in the optical film, and the second direction is a direction perpendicular to the first direction .

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