KR20170114429A - System for laminating an optical film and Method for manufacturing a display unit using the same - Google Patents

System for laminating an optical film and Method for manufacturing a display unit using the same Download PDF

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Publication number
KR20170114429A
KR20170114429A KR1020160041192A KR20160041192A KR20170114429A KR 20170114429 A KR20170114429 A KR 20170114429A KR 1020160041192 A KR1020160041192 A KR 1020160041192A KR 20160041192 A KR20160041192 A KR 20160041192A KR 20170114429 A KR20170114429 A KR 20170114429A
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South Korea
Prior art keywords
optical film
cutting
unit
attaching
display panel
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KR1020160041192A
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Korean (ko)
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KR102029695B1 (en
Inventor
이범석
박경혁
이석재
장응진
최항석
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주식회사 엘지화학
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • B29C47/0064—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0021—Combinations of extrusion moulding with other shaping operations combined with joining, lining or laminating
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/28—Interference filters
    • G02B5/285—Interference filters comprising deposited thin solid films
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • B29C2043/3405—Feeding the material to the mould or the compression means using carrying means
    • B29C2043/3422—Feeding the material to the mould or the compression means using carrying means rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/40—Moulds for making articles of definite length, i.e. discrete articles with means for cutting the article
    • B29C2043/406—Moulds for making articles of definite length, i.e. discrete articles with means for cutting the article laser cutting means

Abstract

The present invention relates to an optical film laminating system and a display unit manufacturing method using the same. An optical film laminating system according to an embodiment of the present invention includes a film transfer unit for transferring a raw material of an optical film in a first direction and a transfer unit for transferring the optical film raw material in a first direction, A panel transfer unit for transferring the display panel, and an optical film separating unit for separating the optical film from the optical film cut at the cutting unit and transferring the optical film onto an upper surface or a lower surface of the display panel, And an attaching unit for attaching the optical film to a lower surface of the optical film laminate, wherein the cutting unit includes an optical film laminating system for cutting long and short sides of the optical film area corresponding to a region of the optical film fabric to be adhered to the display panel .

Figure P1020160041192

Description

TECHNICAL FIELD [0001] The present invention relates to an optical film laminating system and a display unit manufacturing method using the optical film laminating system.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical film laminating system and a display unit manufacturing method using the optical film laminating system and more particularly to an optical film laminating system used in a process of attaching an optical film to both surfaces of a panel constituting a display device, To a method of manufacturing a display unit using the same.

The display unit is applied to a display device. The display unit is realized by attaching an optical film (f) such as a polarizing film to both sides of the panel (P). 1 is a schematic view showing an optical film laminating system 1 for manufacturing a conventional display unit. 2 is a process diagram showing a conventional process using the optical film laminating system 1 of FIG.

Referring to Figures 1 and 2, the display unit supplies the optical film fabric R with a roll. The optical film raw material R has an optical film f and a release paper D attached to the back surface of the optical film f. The optical film fabric R used in the process is used in the first full cut state corresponding to the size of the panel. The full-cut optical film material R is supplied by a transport roll or the like in the form of an original roll. The optical film fabric R being transported undergoes a half-cutting process. The half-cutting process is performed by the cutting unit 2. At this time, as shown in Fig. 5A, only the width direction W1 perpendicular to the longitudinal direction of the optical film R is cut. The half-cutting process is performed by cutting only the optical film (f) and cutting the release paper (D) as shown in Fig. 5 (b).

That is, the originally supplied optical film R is supplied in a state of being fully cut to fit on one side of the panel, and then undergoes a half-cutting process during the transfer of the optical film R for the lyning process. The half-cutting performs a process of cutting only the surface perpendicular to the optical film raw material R. [

After the cutting process, a laminating process is performed in which the release paper D is removed from the optical film R and the optical film f is laminated on one side of the panel P. Also, on the opposite side of the panel P, the optical film (f) is laminated through the same process to produce a display unit.

On the other hand, when the optical film (f) corresponds to a polarizing film during the manufacturing process of the display unit, the absorption axes of the polarizing films (f) attached to both surfaces of the panel (P) Therefore, when the polarizing film (f) is attached in the process of manufacturing the display unit, the polarizing film (f) is attached so that the absorption axis of the polarizing film (f) is vertical as shown in Figs.

However, in the manufacturing process of the display unit described above, the optical film raw material R is supplied in a state of being cut in a predetermined dimension in the width direction before the manufacturing process, and is cut The cutting is performed only in the width direction W1 which is a direction perpendicular to the longitudinal direction of the optical film R during the feeding of the optical film raw material R. [ That is, the cutting step cuts only one direction of the optical film raw fabric R.

However, the optical film (f) is easily varied in size depending on its temperature and humidity due to its characteristics, and the length of the optical film (f) in the transverse direction in the course of transporting the optical film (R) Further, when the length of the initial optical film web R in the width direction causes an error in initial feeding, there is a problem that the optical film web R can not be used. Further, since the demand for a narrow bezel display having a narrow width of display units has recently been demanded, it is required to improve the attachment precision between the panel (P) and the optical film (f), and when cutting the optical film (f) The precision of the process is required.

The present invention provides an optical film laminating system capable of precisely performing a cutting process of an optical film and a method of manufacturing a display unit using the same.

The present invention also provides an optical film laminating system capable of accurately attaching an optical film to a panel, and a display unit manufacturing method using the same.

The objects to be solved by the present invention are not limited thereto, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

The present invention provides an optical film laminating system for attaching an optical film to a display panel.

According to an embodiment of the present invention, the optical film laminating system includes a film transfer unit for transferring a raw material of the optical film in a first direction and an upper part of the film transfer unit, A panel transporting unit for transporting the display panel; and an optical film separating unit for transporting the optical film on the panel transporting unit by separating the optical film from the optical film cut at the cutting unit, And an attaching unit for attaching the optical film to an upper surface or a lower surface of the optical film, wherein the cutting unit cuts the long side and the short side of the optical film area corresponding to a region of the optical film original attached to the display panel.

According to an embodiment, the cutting unit may cut a long side and a short side of the optical film area corresponding to an area attached to the display panel of the optical film by receiving the laser light, The laser beam is received by the first cutting member and is spaced apart from the first cutting member by a predetermined distance along a second direction perpendicular to the first direction when viewed from above, And a second cutting member for cutting a long side and a short side of the optical film area corresponding to an area to be attached to the panel.

According to an embodiment, the cutting unit may include a fixed frame, the lengthwise direction of which is provided along the first direction, the movable frame being vertically coupled to the fixed frame and movable along the first direction, And a moving frame to which the second cutting members are coupled, respectively.

According to an embodiment, the first cutting member and the second cutting member may be provided so as to be movable along the second direction in the moving frame, respectively.

According to one embodiment, the optical film laminating system further includes an inspection unit for inspecting a cutting process in which the optical film is cut or an adhering process in which the optical film is adhered to the display panel, And a first judging member for judging whether or not the optical film is cut within a predetermined error range in the cutting process based on the first image pick-up member for picking up the optical film original cut at the first pick- And a second judging member for judging the size and the attaching position of the optical film based on the image picked up by the second image pick-up member and a second image pick-up member for picking up the optical film attached in the attaching step have.

According to one embodiment, the optical film laminating system further comprises a controller for controlling the cutting unit and the attaching unit based on the data judged by the inspection unit, wherein the controller controls the first judging member or the second judging member When the cutting process or the attaching process judged by the member is judged to be out of the predetermined error range or is abnormal in the size of the optical film or more than the attachment position of the optical film, The cutting unit and the attaching unit.

According to one embodiment, the cutting unit may further include an adsorption member located at a lower portion of the first cutting member and the second cutting member, and having an adsorption plate for adsorbing and supporting the optical film raw material being transported .

According to an embodiment, the first cutting member may include a beam splitter for reflecting a part of the laser beam transmitted to the light source member, a first reflection mirror for reflecting the laser beam supplied from the beam splitter, A first beam expander for changing the thickness of the laser beam supplied from the first beam expander, a first beam shaper for changing a characteristic of the laser beam transmitted from the first beam expander, and a second beam shaper for condensing the laser beam having passed through the first beam shaper Wherein the second cutting member includes a plurality of second reflecting mirrors that reflect the laser light transmitted to the light source member and a second beam that changes the thickness of the laser light supplied from the second reflecting mirror, A second beam shaper for changing the characteristics of the laser beam transmitted from the second beam expander, Having passed through the second beam shaper claim for condensing the laser beam may include the second lens unit.

According to one embodiment, the film transport unit comprises a feed roll for feeding the optical film fabric in the first direction, a transport roll for transporting the optical film fabric supplied in the supply roll in the first direction, And a recovery roll for recovering the release paper from the attachment unit.

According to one embodiment, the attaching unit may include a separating member separating the optical film from the release paper, and a laminating roll attaching the optical film separated through the separating member to the display panel.

The present invention provides a method of manufacturing a display unit by attaching a plurality of optical films to a display panel.

According to an embodiment of the present invention, there is provided a method of manufacturing an optical film, comprising the steps of: transporting a raw material of an optical film in a first direction; and transferring a long side and a short side of the optical film region, And an attaching step of attaching the optical film to the upper surface or the lower surface of the display panel by separating the release film and the optical film from the cut optical film.

According to one embodiment, the display unit manufacturing method may include an inspection step of inspecting the size of the optical film cut or the size and position of the optical film attached to the display panel, Further comprising a correcting step of correcting a cut position value of the optical film original of the step or correcting an attachment position of the optical film in the attaching step, wherein the inspecting step and the correcting step are performed by the cutting step and the attaching step Can be performed simultaneously.

According to one embodiment, the inspecting step may include capturing an area of the optical film original cut during the cutting step to obtain a first image, and based on the first image, Determining a size of the optical film based on the second image and an attachment position to be attached to the display panel by determining whether the optical film is cut within an error range and capturing the optical film to be attached during the attachment step to obtain a second image, can do.

According to an embodiment, in the case where the optical film cut in the cutting step is out of the predetermined error range or the size of the optical film is determined to be abnormal in the attaching step, the correction step calculates the error value And reflects it in real time in the cutting step. If the attachment position of the optical film is determined to be abnormal in the attaching step, the error value can be calculated and reflected in the attaching step in real time.

According to an embodiment of the present invention, the determination of the attachment position of the optical film may be made by determining the distance between the alignment mark attached to the display panel and the optical film, and determining that the deviation is out of a predetermined range.

According to an embodiment of the present invention, in the cutting process of the optical film, the lengthwise direction and the widthwise direction of the end of the optical film can be cut off before the attaching process, thereby increasing the efficiency of the optical film cutting process.

In addition, according to one embodiment of the present invention, it is possible to minimize the cutting error of the optical film and the attachment error of the panel by inspecting the cutting process and the attaching process of the optical film.

The effects of the present invention are not limited to the above-mentioned effects, and the effects not mentioned can be clearly understood by those skilled in the art from the present specification and attached drawings.

1 is a schematic view of an optical film laminating system for manufacturing a conventional display unit.
2 is a process diagram showing a conventional process using the optical film laminating system of FIG.
Figs. 3 and 4 are views showing directions in which absorption axes of a pair of polarizing films respectively attached to both surfaces of the panel are formed. Fig.
Figure 5 (a) is a view showing the orientation of the optical film fabric cut into the cutting unit of the optical film laminating system of Figure 1;
5 (b) is a cross-sectional view showing the optical film fabric to be half-cut.
6 is a view showing an optical film laminating system according to an embodiment of the present invention.
Figure 7 is a perspective view showing the cutting unit of Figure 6;
FIG. 8 is a perspective view showing the adsorption plate of FIG. 6; FIG.
9 and 10 are perspective views schematically showing the movement of the cutting unit.
11 is a view showing a configuration of the first cutting member.
12 is a view showing a configuration of a second cutting member.
13 is a schematic view showing a control process by the controller.
Fig. 14 is a view schematically showing an area of the optical film raw material cut by the cutting unit of Fig. 6; Fig.
15 is a process diagram illustrating a method of manufacturing a display unit according to an embodiment of the present invention.
16 is a view showing an example of a first image acquired through the inspection unit.
17 is a view showing an example of a second image acquired through the inspection unit.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments of the present invention can be modified in various forms, and the scope of the present invention should not be construed as being limited to the following embodiments. This embodiment is provided to more fully describe the present invention to those skilled in the art. Accordingly, the shape of the elements in the figures may be exaggerated in order to emphasize a clearer description. In addition, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, and the inventor should appropriately define the concept of the term to describe its invention in the best way possible. It should be construed as meaning and concept consistent with the technical idea of the present invention.

The present invention relates to an optical film laminating system (10) which is produced by attaching an optical film (f) to a display panel (P). As the optical film (f) according to the present invention, a polarizing film may be used.

6 is a view showing an optical film laminating system according to an embodiment of the present invention. 6, the optical film laminating system 10 includes a film transfer unit 100, a panel transfer unit 200, a cutting unit 300, an attachment unit 400, an inspection unit 500 and a controller 600. [ .

The film transfer unit 100 supplies the optical film material R. The film transfer unit 100 transfers the optical film R in the first direction 12. The film transfer unit 100 can recover the release paper D separated from the optical film f in the optical film raw material R. [

The first direction 12 is a direction in which the optical film R is fed and conveyed in a first direction 12 and the second direction 14 is a direction perpendicular to the first direction 12, One direction is referred to as a second direction 14 and the third direction 16 is referred to as a third direction 16 in a direction perpendicular to both the first direction 12 and the second direction 14. [

The film transfer unit 100 includes a supply roll 110, a transfer roll 130, and a recovery roll 150. The supply roll 110 has a roll shape. The supply roll 110 may have a roll of optical film fabric R wound thereon. The feed roll 110 is rotatably provided in one direction. For example, the supply roll 110 is rotatable in a clockwise or counterclockwise direction, and the supply position of the optical film fabric R is changed in accordance with the rotation direction. The supply roll 110 rotates in one direction to supply the optical film R in the first direction 12. [

The transport roll 130 supports the optical film R or release paper D and transports it in the first direction 12. The feed roll 130 has a roll shape. The feed roll 130 is rotatably provided in one direction. For example, a plurality of feed rolls 130 may be provided.

The recovery roll 150 recovers the separated release paper D among the optical film fabrics R from the attachment unit 400. The recovery roll 150 has a roll shape. The recovery roll 150 is rotatably provided in one direction. The recovery roll 150 winds the release paper D fed through the feed roll 130 in roll form.

The panel transfer unit 200 transfers the panel P while supporting it. The optical film (f) is attached to the panel (P) being conveyed in the panel transfer unit (200) by an attaching unit (400) which will be described later. The optical film (f) is attached to the upper surface or the lower surface of the panel (P). The panel transfer unit 200 may have a width corresponding to the width of the panel P. [ Alternatively, the panel transfer unit 200 may be provided larger than the width of the panel P. The panel transfer unit 200 can support and transfer the panel P using a plurality of conveying rollers. Alternatively, the panel transfer unit 200 may be provided as a conveyor belt. Alternatively, the panel transfer unit 200 may be provided with various transfer means as a means for transferring the panel P.

Figure 7 is a perspective view showing the cutting unit of Figure 6; Referring to FIGS. 6 and 7, the cutting unit 300 can cut the optical film R. FIG. The cutting unit 300 can cut along the first direction 12 or the second direction 14 of the optical film R using laser light. The cutting unit 300 can cut the long side W3 and the short side W2 of the region of the optical film R that is attached to the display panel P as shown in Fig. The cutting unit 300 includes a light source member 310, a reflective member 320, a first cutting member 330, a second cutting member 340, a fixing frame 350, a moving frame 360, And an adsorbing member 380.

The light source member 310 supplies light to the first cutting member 330 or the second cutting member 340. The light source member 310 is positioned on the upper side of the optical film R to be transported. As an example, the supplied light may be laser light. For example, the laser light of the light source member 310 may be a CO 2 laser. Alternatively, the laser light may be a CO laser. Optionally, the laser light may be a UV laser. The laser light can be used as long as it is a wavelength that absorbs light in the optical film (f).

The reflecting member 320 reflects the light supplied from the light source member 310 and supplies the reflected light to the first cutting member 330 or the second cutting member 340. The reflective member 320 is positioned adjacent to the light source member 310. The reflective member 320 may be positioned along the first direction 12 with the first cutting member 330 or the second cutting member 340. The reflective member 320 may be provided as a reflective mirror.

Although the reflective member 320 is provided in the embodiment of the present invention, the reflective member 320 may not be provided. The light from the light source member 310 can be supplied directly to the first cutting member 330 or the second cutting member 340 when the reflective member 320 is not provided.

The first cutting member 330 cuts the optical film R, which is being transported, using light. The first cutting member 330 can cut the long side and the short side of the optical film f corresponding to the region of the optical film R that is attached to the display panel P. [ 14, the first cutting member 330 cuts the long side W3 and the short side W of the optical film R while moving along the first direction 12 and the second direction 14 .

The first cutting member 330 may be installed on a moving frame 360, which will be described later. The first cutting member 330 is movable in the second direction 14 within the moving frame 360. For example, as shown in FIG. 9, the first cutting member 330 is provided movably in the second direction 14 along the guide holes 371 and 361 of the moving frame 360. The movement of the first cutting member 330 is movable between the standby position and the process position.

The waiting position is a position where the first cutting member 330 or the second cutting member 340 is positioned when the cutting process is not performed on the optical film R. The process position is defined as a position where the first cutting member 330 or the second cutting member 340 is positioned when the optical film R is cut. For example, the process position may be the position of the first cutting member 330 positioned on the short side of the optical film R when the short side of the optical film R is cut.

The first cutting member 330 is movable in the first direction 12 as the moving frame 360 moves in the first direction 12.

11 is a view showing a configuration of the first cutting member. 7 and 11, the first cutting member 330 includes a beam splitter 331, a first reflecting mirror 332, a first beam expander 333, a first beam shaper 334, A mirror 335, a first lens unit 336, and a first nozzle unit 337. [

The beam splitter 331 passes a part of the laser light cut by the light source member 310 and cuts the laser light into the second cutting member 340 and reflects a part of the remaining light to supply it to the first reflection mirror 332. For example, the beam splitter 331 may pass 50% of the light supplied from the light source member 310 and reflect 50% thereof. Alternatively, the ratio of the light passing through the beam splitter 331 and the light being reflected may be different.

The first reflection mirror 332 can reflect the light supplied from the beam splitter 331. The first reflecting mirror 332 can reflect most of the supplied light. In one embodiment, the first reflective mirror 332 may be provided as a reflector capable of reflecting from 99% to 99.9% of the supplied light. The light reflected by the first reflection mirror 332 is supplied to the first beam expander 333. The reflection angles of the first reflection mirror 332 and the beam splitter 331 can be provided equally. For example, the reflection angle may be 45 degrees.

The first beam expander 333 can change the size of the laser beam supplied from the light source member 310. The first beam expander 333 is positioned adjacent to the first reflection mirror 332. For example, the first beam expander 333 can change the laser beam supplied to the first reflecting mirror 332 into a large beam or a small beam. The first beam expander 333 may be a device composed of one or more lenses in consideration of the cutting quality and the focus position and size.

The first beam shaper 334 changes the characteristics of the laser beam supplied from the light source unit 400. The first beam shaper 334 is positioned adjacent to the first beam expander 333. The first beam shaper 334 can change the characteristics of the laser beam passing through the first beam expander 333 to facilitate cutting.

The reflection mirror 335 reflects the light passing through the first beam shaper 334 and supplies the reflected light to the first lens unit 336. The reflection mirror 335 reflects 100% of the light passing through the first beam shaper 334. The reflective mirror 335 is positioned adjacent to the first beam shaper 334.

The first lens unit 336 condenses the laser beam transmitted from the reflection mirror 335 in a predetermined area. The first lens unit 336 condenses the transmitted laser beam and irradiates the optical film raw R.

The first nozzle unit 337 irradiates the optical film R with the light that has passed through the first lens unit 336. The first nozzle unit 337 may be positioned below the first lens unit 336.

Although the first cutting member 330 has the first beam expander 333 and the first beam shaper 334 in the above-described example, the present invention is not limited thereto, and the first beam expander 333 and the first beam shaper 334 may be used. 333 and the first beam shaper 334 may not be provided.

The second cutting member 340 cuts the optical film R, which is being transported, using light. The second cutting member 340 can cut the long side and the short side of the optical film f corresponding to the region of the optical film R that is attached to the display panel P. [ Specifically, the second cutting member 340 can cut the long side W3 and the short side W2 of the optical film R, along the first direction 12 and the second direction 14 as shown in Fig. 14 .

The second cutting member 340 is spaced apart from the first cutting member 330 along the first direction 12 by a predetermined distance. The second cutting member 340 may be installed on the moving frame 360. The second cutting member 340 is movable in the second direction 14 within the moving frame 360 as the first cutting member 330 of FIG. 9 moves. The second cutting member 340 is provided so as to be movable in the second direction 14 along the guide hole 361 of the moving frame 360. The movement of the second cutting member 340 is movable between the standby position and the process position.

The second cutting member 340 is movable in the first direction 12 as the moving frame 360 moves in the first direction 12. [

12 is a view showing a configuration of a second cutting member. 7 and 12, the second cutting member 340 includes a second reflecting mirror 341, a second beam expander 342, a second beam shaper 343, a reflecting mirror 344, (345) and a second nozzle portion (346).

The second reflection mirror 341 can reflect the light supplied from the light source member 310. [ The second reflection mirror 341 can reflect most of the supplied light. In an embodiment, the second reflection mirror 341 may be provided as a reflector capable of reflecting 99% to 99.9% of the supplied light. A plurality of second reflection mirrors 341 may be provided. The light reflected by the second reflection mirror 341 is supplied to the second beam expander 342. The reflection angles of the plurality of second reflection mirrors 341 may be equally provided. For example, the reflection angle may be 45 degrees.

The second beam expander 342 may change the size of the laser beam supplied from the light source member 310. The second beam expander 342 is positioned adjacent to the second reflection mirror 341. For example, the second beam expander 342 can change the laser beam supplied to the second reflecting mirror 341 into a large beam or a small beam. The second beam expander 342 may be a device composed of two sets of lenses that match the focus position.

The second beam shaper 343 (Beam shaper) changes the characteristics of the supplied laser light. The second beam shaper 343 is positioned adjacent to the second beam expander 342. The second beam shaper 343 can change the characteristics of the laser beam passing through the second beam expander 342 to facilitate cutting.

The reflection mirror 344 reflects the light passing through the second beam shaper 343 and supplies the reflected light to the second lens unit 345. The reflecting mirror 344 reflects 100% of the light passing through the second beam shaper 343. The reflective mirror 344 is positioned adjacent to the second beam shaper 343.

The second lens unit 345 condenses the laser beam transmitted from the reflection mirror 344 in a predetermined area.

The second nozzle unit 346 irradiates the light that has passed through the second lens unit 345 to the optical film R. The second nozzle unit 346 may be positioned below the second lens unit 345.

Although the second cutting member 340 has the second beam expander 342 and the second beam shaper 343 in the above-described example, the present invention is not limited thereto, and the second beam expander 342 and the second beam shaper 343 may be used. 342 and the second beam shaper 343 may not be provided.

Referring to FIG. 7, the fixed frame 350 is provided so that the movable frame 360 can be moved in the first direction 12. The stationary frame 350 is positioned on top of the optical film R being transported. The fixed frame 350 is provided in the first direction 12 in its longitudinal direction. A guide hole 351 is formed in the stationary frame 350. The guide hole 351 is located on one side of the fixed frame 350. The guide hole 351 is formed in the first direction 12 in the longitudinal direction. The moving frame 360, which will be described later, is movable in the first direction 12 along the guide hole 351.

The movable frame 360 is vertically coupled to the fixed frame 350. The moving frame 360 is positioned above the optical film R being transported. The movable frame 360 is provided in the second direction 14 in its longitudinal direction. The first cutting member 330 and the second cutting member 340 are coupled to the moving frame 360. The movable frame 360 is movable in the first direction 12 along the guide hole 351 formed in the fixed frame 350 as shown in FIG.

A guide hole 361 is formed in the movable frame 360. The guide hole 361 is located on one side of the moving frame 360. The guide hole 361 is formed in the second direction 14 in the longitudinal direction. The first cutting member 330 or the second cutting member 340 is movable in the second direction 14 along the guide hole 361. [

The blocking member 370 cuts off the light irradiated from the first cutting member 330 or the second cutting member 340 while the cutting process is not performed. The blocking member 370 cuts off the light of the first cutting member 330 or the second cutting member 340 to prevent the light from being irradiated to the bottom at the standby position. The blocking member 370 is engaged with the moving frame 360. A plurality of blocking members 370 are provided. For example, one of the plurality of blocking members 370 is positioned below the standby position of the first cutting member 330. The other one of the plurality of blocking members 370 is located below the standby position of the second cutting member 340.

The blocking member 370 has a hole 371 formed in its upper surface. The hole 371 is located opposite to the first nozzle portion 337 or the second nozzle portion. Light emitted from the first cutting member 330 or the second cutting member 340 through the hole 371 passes through the upper surface of the blocking member 370. The passed light is introduced into the blocking member 370 and prevents the light from being irradiated to the lower portion of the blocking member 370 due to the configuration of a beam shutter (not shown).

FIG. 8 is a perspective view showing the adsorption plate of FIG. 6; FIG. 6 to 8, the adsorption member 380 supports the optical film raw material R being transported. The adsorption member 380 sucks and fixes the optical film raw material R when cutting the optical film raw material R in the first cutting member 330 or the second cutting member 340. [ The adsorption member 380 is located below the first cutting member 330 and the second cutting member 340. The adsorption member 380 includes an adsorption plate 381 and a pressure-reducing member 385.

The adsorption plate 381 is located below the optical film material R being transported. The adsorption plate 381 may be provided in a shape corresponding to the panel. As an example, the adsorption plate 381 may be provided in a rectangular shape when viewed from above. Alternatively, it may be provided as a circular plate. The shape of the adsorption plate 381 is not limited to the above example, and may be provided in various shapes depending on the shape of the panel.

An optical film fabric R is placed on the upper surface of the adsorption plate 381. A plurality of depressurization holes 383 are formed on the upper surface of the adsorption plate 381. The pressure reducing hole 383 is spaced a predetermined distance and is located on the upper surface of the adsorption plate 381.

The pressure-reducing member 385 provides a reduced pressure to the pressure-reducing hole 383 of the adsorption plate 381. On the upper surface of the adsorption plate 381, the optical film web R is supported on the adsorption plate 381 through the depressurization of the pressure-sensitive member 385. Although not shown in the drawing, the suction plate 381 may be formed with a groove to match the shape to be cut in order to improve cutting quality. The grooves formed in the adsorption plate 381 can be provided to prevent the cutting quality from deteriorating when the work is performed while the optical film R is adhered to the adsorption plate 381.

Referring to Fig. 6, the attaching unit 400 detaches the optical film f from the optical film R and attaches the panel P to the optical film f. The attachment unit 400 includes a separation member 410 and a laminating roll 430.

The separating member 410 separates the optical film f and the release paper D from the optical film R. The separating member 410 may be positioned under the panel P. [ The optical film f separated from the separating member 410 is supplied to the laminating roll 430 described later. The release paper D separated from the separation member 410 is conveyed to the recovery roll 150. [

The laminating roll 430 attaches the optical film f separated through the separating member 410 to the display panel P. [ A pair of laminating rolls 430 are provided. A pair of laminating rolls 430 are positioned at the top and bottom of the panel transfer unit 200, respectively. The laminating roll 430 is provided in a roll shape and is rotatably provided in one direction. The pair of laminating rolls 430 are provided in different directions of rotation. For example, the laminating roll 430 attaches the optical film (f) to the lower surface of the display panel (P).

The inspection unit 500 inspects a cutting process in which the optical film R is cut or an attaching process in which the optical film f is attached to the display panel P. [ The inspection unit 500 includes a first imaging member 510, a first determination member 530, a second imaging member 550 and a second determination member 570.

The first imaging member 510 images the optical film raw R to be cut. The first imaging member 510 is positioned on the upper side of the optical film R being transported. The first imaging member (510) is located adjacent to the cutting unit (300). A plurality of first imaging members 510 may be provided. For example, the first imaging member 510 may be provided as a camera. For example, the first imaging member 510 may be provided with a CCD (charge-coupled device) camera. Alternatively, it can be variously provided as an apparatus capable of photographing the optical film material R to be cut.

The first determining member 530 determines whether the optical film R is cut within a predetermined error range during the cutting process based on the image picked up by the first imaging member 510. [ For example, the first determining member 530 receives the first image I1 of the image captured by the first sensing member 510. [ 16 is an example of a first image I1 picked up by the first pick-up member 510. Fig.

The first determining member 530 examines the cutting process of the optical film fabric R based on the image of the first image I1. The first determining member 530 checks the length h1 in the width direction of the area of the optical film f to be cut. The first determining member 530 checks the lengths h2 and h3 of the remaining width excluding the length h1 in the width direction which is the short side length of the area of the optical film f to be cut. The first determining member 530 checks the length h4 in the longitudinal direction that is the long side length of the area of the optical film f to be cut. The first determining member 530 has the long side h4 and the short side h1) is measured and checked whether it is within a predetermined range.

The second image pickup member 550 picks up an optical film f to be attached. The second image sensing member 550 is positioned under the panel P being conveyed. The second imaging member 550 is positioned adjacent to the panel transfer unit 200. A plurality of second imaging members 550 may be provided. For example, the second imaging member 550 may be provided as a camera. For example, the second image sensing member 550 may be provided with a CCD (charge-coupled device) camera. Alternatively, it can be variously provided as an apparatus capable of photographing the optical film material R to be cut.

The second judgment member 570 judges the size and the attachment position of the optical film f during the attachment process based on the image picked up by the second image pickup member 550. For example, the second determining member 570 receives the second image I2 of the image captured by the second imaging member 550. [ 17 is an example of a second image I2 captured by the second imaging member 550. Fig. Referring to Fig. 17, the second determining member 570 inspects the attachment process of the optical film f based on the image of the second image I2.

The second determining member 570 measures the distance to the optical film f attached to the panel P based on the alignment marks AM marked. The distance h5 between the end of the alignment mark AM and the side of the optical film f is measured to determine whether the optical film f is attached at a predetermined position. An area where the alignment mark AM is not displayed measures the distance h7 between one side of the panel P and one side of the optical film f to measure the position of the attached optical film f. The second determining member 570 can measure the lengths of the longer side h9 and the shorter side h8 of the optical film f and determine whether the optical film f has been cut by a predetermined length in the optical film f cutting step.

13 is a schematic view showing a control process by the controller. Referring to FIG. 13, the controller 600 controls the cutting unit 300 and the attaching unit 400 based on the data determined by the inspection unit 500. The controller 600 receives the determination result of the cutting process or the attachment process determined by the first determination member 530 or the second determination member 570. [ The controller 600 calculates a correction value by measuring a cutting error when the cutting process is out of a predetermined error range, and controls the cutting unit 300 to reflect the cutting error to the cutting unit 300 at the next cutting. The controller 600 calculates a correction value by measuring a cutting error when the size of the optical film f is out of a predetermined error range in the attaching process and outputs the correction value to the cutting unit 300 so that the cutting unit 300 reflects the cutting error, .

The controller 600 measures the error value when it is judged that the position of attachment of the optical film f is equal to or higher than the attachment position of the optical film f and reflects the correction value to the attaching unit 400 at the next attaching step Thereby controlling the attaching unit 400.

In the optical film laminating system 10 described above, the optical film f is attached to the lower portion of the panel P. However, the present invention is not limited to this, and a plurality of optical film laminating systems 10 may be provided, (F) to the upper and lower portions of the optical film (P).

In the above example, the cutting unit 300 cuts the optical film f using laser light. However, the present invention is not limited to this, and the optical film f can be cut using a knife or the like .

Hereinafter, a method of manufacturing a display panel (P) unit will be described. The display unit is manufactured by attaching a plurality of optical films (f) to a display panel (P). 15 is a process diagram illustrating a method of manufacturing a display unit according to an embodiment of the present invention. 15, the display unit manufacturing method includes a transfer step S11, a cutting step S12, an attaching step S13, a checking step S14, and a correcting step S15.

The transferring step S11 is a step of transferring the optical film R in the first direction 12. The optical film fabric R is placed in the supply roll 110 in the form of a roll at the beginning of the process. The feed roll 110 then feeds the optical film web R in the first direction 12.

In the cutting step S12, the long side and the short side of the optical film (f) area corresponding to the area attached to the display panel (P) among the optical film raw yarn (R) being transported are cut using laser light. The cutting of the optical film fabric R is carried out through the cutting unit 300. The cutting of the short side of the optical film raw fabric R may be performed by moving one of the first cutting member 330 or the second cutting member 340 or simultaneously in the second direction 14, . The cutting process is performed by a half-cutting process. Here, the half-cutting means cutting only the optical film R, except for the release paper D, of the optical film R.

The cutting of the long side of the optical film raw fabric R may be performed by moving the optical film raw fabric R while moving in the first direction 12 simultaneously with either the first cutting member 330 or the second cutting member 340, .

The cutting in the cutting step S12 is not limited to the above example, and only the long side or the short side may be cut according to the process. Alternatively, when full cutting is required instead of half cutting, the long side or the short side of the optical film raw material R may be pull cut.

The attaching step S13 is performed after the cutting step S12. The attaching step S13 separates the release paper D and the optical film f from the cut optical film R. The attaching step (S13) attaches the separated optical film (f) to the upper or lower surface of the display panel (P). The attaching step S13 attaches the optical film f to the display panel P through the attaching unit 400 described above.

The inspection step S14 is a step of checking the size of the cut optical film f or the size and position of the optical film f attached to the display panel P. [ The inspection step S14 is performed at the same time when the cutting step S12 or the attaching step S13 is performed. The inspection step S14 picks up the optical film raw R to be cut during the cutting process in the cutting step S12.

For example, the inspection step S14 may perform the inspection based on the first image I1 picked up by the first pick-up member 510. [ The inspection step S14 is performed to determine the length h2 and the short side h1 of the optical film f cut in the first image I1 and the lengths h3 and h4 between the optical film f and the optical film R, ) Can be measured to check the cutting process. If the lengths of the long side h2 and the short side h1 of the optical film f are out of a predetermined range, it is judged that the cutting process is abnormal. Alternatively, the inspection step S14 can measure the length of the long side h9 and the short side h8 of the optical film f attached to the panel P in the adhering step to inspect the optical film f cutting process have. For example, the inspection step S14 may perform inspection based on the second image I2 captured by the second imaging member 550. [ The inspection step S14 measures the lengths of the long side h9 and the short side h8 of the optical film f attached to the panel P to check whether it is within a predetermined range. If the lengths of the long sides (h2, h9) and the short sides (h1, h8) of the optical film (f) are out of a preset range, it is judged that the cutting process is abnormal.

For example, the inspection step S14 checks the position of the optical film f attached to the panel P based on the second image I2. The position of the optical film f attached to the panel P is determined by measuring the distances h5 and h6 between the alignment mark AM and the optical film f displayed on the panel P, . When the distances h5 and h6 between the alignment mark AM and the optical film f deviate from the preset range, it is judged that the position is equal to or more than the attachment position of the optical film f.

The correction step S15 is performed when the optical film f cut in the cutting step S12 out of the inspection results of the inspection step S14 deviates from a predetermined error range or when the size of the optical film f in the attachment step S13 The error value is calculated and reflected in the cutting step S12 in real time. For example, if the result of the inspection in step S14 is determined to be abnormal, the process can be stopped. Thereafter, the cutting error value of the optical film f is calculated and reflected in the cutting unit 300.

The correction step S15 calculates the error value when the attachment position of the optical film f is determined to be abnormal in the attachment step S13 of the inspection result of the inspection step S14 and attaches it to the attachment step S13 in real time Reflect. For example, if the result of the inspection in step S14 is determined to be abnormal, the process can be stopped. Thereafter, the attachment error value of the optical film is calculated and reflected in the attachment unit 400. [ The correction step S15 is performed at the same time when the cutting step S12 and the attaching step S13 are performed.

According to the embodiment of the present invention, it is possible to simultaneously cut the long side and the short side of the optical film raw yarn R using laser light, thereby shortening the time for the cutting step, Precision can be improved. In addition, the cutting process can be inspected in real time to detect abnormalities of the cutting process, and the efficiency of the optical film (f) cutting process can be improved by correcting it in real time.

In addition, according to one embodiment of the present invention, it is possible to improve the precision in the adhering step by inspecting the attachment position and the size of the optical film (f) when the optical film (f) is attached to the panel (P) in real time. In addition, the size of the optical film (f) can be inspected by inspecting the attaching process in real time, and the size of the optical film (f) is checked twice in the cutting process and the attaching process, Can be inspected. In addition, when the attachment position of the optical film (f) is determined to be abnormal in the attaching step, it can be corrected in real time, and the efficiency of the process of attaching the optical film (f) can be improved. Further, the efficiency of the display unit manufacturing process can be improved.

The foregoing detailed description is illustrative of the present invention. In addition, the foregoing is intended to illustrate and explain the preferred embodiments of the present invention, and the present invention may be used in various other combinations, modifications, and environments. That is, it is possible to make changes or modifications within the scope of the concept of the invention disclosed in this specification, within the scope of the disclosure, and / or within the skill and knowledge of the art. The embodiments described herein are intended to illustrate the best mode for implementing the technical idea of the present invention and various modifications required for specific applications and uses of the present invention are also possible. Accordingly, the detailed description of the invention is not intended to limit the invention to the disclosed embodiments. It is also to be understood that the appended claims are intended to cover such other embodiments.

10: Optical film laminating system 100: Film transfer unit
110: Feed roll 130: Feed roll
150: recovery roll 200: panel transfer unit
300: cutting unit 310: light source member
320: reflective member 330: first cutting member
340: second cutting member 350: fixed frame
360: moving frame 370: blocking member
380: Suction member 400: Attachment unit
500: Inspection unit 600: Controller

Claims (15)

1. An optical film laminating system for attaching an optical film to a display panel,
A film transfer unit for supplying the optical film raw material and transferring the optical film raw material in a first direction;
A cutting unit located on the upper side of the film transfer unit and cutting a part of the optical film raw material being conveyed;
A panel transfer unit for transferring the display panel; And
And an attaching unit for attaching the optical film to an upper surface or a lower surface of the display panel while being transported on the panel transport unit by separating the optical film from the optical film cut at the cutting unit,
Wherein the cutting unit cuts a long side and a short side of the optical film area corresponding to a region of the optical film original to be adhered to the display panel. The method according to claim 1,
The cutting unit includes:
A light source member for supplying laser light;
A first cutting member for cutting a long side and a short side of the optical film area corresponding to a region of the optical film original to be adhered to the display panel by receiving the laser light; And
And a second cutting member which is located at a predetermined distance from the first cutting member in a second direction perpendicular to the first direction, And a second cutting member for cutting the long side and the short side of the optical film area. 3. The method of claim 2,
The cutting unit includes:
A fixed frame whose longitudinal direction is provided along the first direction;
Further comprising a movable frame coupled to the fixed frame and movable along the first direction, wherein the movable frame is coupled to the first cutting member and the second cutting member, respectively. The method of claim 3,
Wherein the first cutting member and the second cutting member are provided movably along the second direction in the moving frame. The method of claim 3,
The optical film laminating system comprises:
Further comprising an inspection unit for inspecting a cutting step in which the optical film is cut or an attaching process in which the optical film is attached to the display panel,
The inspection unit includes:
A first image pickup member for picking up an image of the optical film original cut in the cutting step;
A first determining member for determining whether the optical film is cut within a predetermined error range during the cutting process based on the image picked up by the first image pick-up member;
A second image pickup member for picking up the optical film to be attached in the attaching step; And
And a second determining member for determining a size and an attachment position of the optical film based on the image picked up by the second image pick-up member. 6. The method of claim 5,
Wherein the optical film laminating system further comprises a controller for controlling the cutting unit and the attachment unit based on the data determined by the inspection unit,
The controller determines that the cutting process or the attaching process determined by the first determining member or the second determining member is out of the predetermined error range or is abnormal in the size of the optical film or more than the attachment position of the optical film The control unit controls the cutting unit and the attachment unit to calculate and correct the error value. The method of claim 3,
Wherein the cutting unit further includes an adsorption member located at a lower portion of the first cutting member and the second cutting member and having an adsorption plate for adsorbing and supporting the optical film raw material being conveyed. 8. The method of claim 7,
Wherein the first cutting member comprises:
A beam splitter for reflecting a part of the laser beam transmitted to the light source member;
A first reflection mirror for reflecting the laser beam supplied from the beam splitter;
A first beam expander for changing the thickness of the laser beam supplied from the first reflection mirror;
A first beam shaper for changing a characteristic of the laser beam transmitted from the first beam expander; And
And a first lens unit condensing the laser beam having passed through the first beam shaper,
The second cutting member may be formed by cutting,
A plurality of second reflection mirrors for reflecting the laser light transmitted to the light source member;
A second beam expander for changing the thickness of the laser beam supplied from the second reflecting mirror;
A second beam shaper for changing a characteristic of the laser beam transmitted from the second beam expander; And
And a second lens unit for condensing the laser beam having passed through the second beam shaper. 8. The method of claim 7,
The film transfer unit includes:
A supply roll for supplying the optical film raw material in the first direction;
A transfer roll for transferring the optical film raw material supplied from the supply roll in the first direction; And
And a recovery roll for recovering the separated release paper from the attachment unit. 10. The method of claim 9,
Wherein the attachment unit comprises:
A separating member for separating the optical film from the release paper;
And a laminating roll for attaching the optical film separated through the separating member to the display panel. A method of manufacturing a display unit by attaching a plurality of optical films to a display panel,
A transporting step of transporting the optical film fabric in a first direction;
A cutting step of cutting a long side and a short side of the optical film area corresponding to an area attached to the display panel of the optical film being transported by using laser light; And
And attaching the optical film to an upper surface or a lower surface of the display panel by separating the release film and the optical film from the cut end of the optical film. 12. The method of claim 11,
The display unit manufacturing method includes:
An inspection step of inspecting the size of the optical film cut or the size and position of the optical film adhered to the display panel;
Further comprising a correcting step of correcting a cut position value of the optical film original in the cutting step based on the inspection result of the inspection step or correcting an attachment position of the optical film in the adhesion step,
Wherein the checking step and the correcting step are performed simultaneously when the cutting step and the attaching step are performed. 13. The method of claim 12,
Wherein the inspection step comprises the steps of capturing an area of the end of the optical film to be cut during the cutting step to obtain a first image and determining whether the optical film is cut within a predetermined error range during the cutting process based on the first image However,
Capturing the optical film to be attached during the attaching step to obtain a second image and determining a size of the optical film based on the second image and an attachment position to be attached to the display panel. 14. The method of claim 13,
Wherein the correcting step comprises:
When the optical film cut in the cutting step is out of the predetermined error range or when the size of the optical film is judged to be abnormal in the attaching step, the error value is calculated and reflected in the cutting step in real time,
Wherein when the attachment position of the optical film is determined to be abnormal in the attaching step, the error value is calculated and reflected in the attaching step in real time. 14. The method of claim 13,
Wherein the determination of the attachment position of the optical film is performed by measuring a distance between the alignment mark attached to the display panel and the optical film, and determining that the deviation is out of the predetermined range.
KR1020160041192A 2016-04-04 2016-04-04 System for laminating an optical film and Method for manufacturing a display unit using the same KR102029695B1 (en)

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EP0093385A2 (en) * 1982-05-06 1983-11-09 Peter Renz Apparatus for laminating sheets with plastic films
EP0263273A2 (en) * 1986-10-10 1988-04-13 International Business Machines Corporation Process of laminating
JPH0939123A (en) * 1995-03-23 1997-02-10 Marquip Inc Laminater for corrugated cardboard sheet
KR20090005537A (en) * 2007-07-09 2009-01-14 엘지전자 주식회사 Apparatus and method for laminating green-sheet, and method for manufacturing plasma display pannel using the method
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KR102135253B1 (en) 2019-11-22 2020-07-17 주식회사 한송네오텍 Partial tilt type protective film laminer for flat display glass

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