CN104898309B - Film attaching system and film attaching method - Google Patents
Film attaching system and film attaching method Download PDFInfo
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- CN104898309B CN104898309B CN201410371361.7A CN201410371361A CN104898309B CN 104898309 B CN104898309 B CN 104898309B CN 201410371361 A CN201410371361 A CN 201410371361A CN 104898309 B CN104898309 B CN 104898309B
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- Prior art keywords
- polarizing film
- film
- panel
- attaching
- unit
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/0046—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by constructional aspects of the apparatus
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
the invention relates to a film attaching system and a film attaching method, the film attaching system of the invention comprises: a first polarizing film attachment system and a second polarizing film attachment system; the first polarizing film attachment system includes: a panel transfer part for transferring the panel to the first polarizing film attaching area, a film supply part for supplying the first polarizing film unit, a cutter for fully cutting the first polarizing film unit transferred by the film transfer part, a first adsorption cylinder, and a release paper removing part; the first polarizing film unit completely cut by the cutter rotates by a preset angle by taking a vertical axis as a center before reaching the first film attaching area; in the first polarizing film attaching region, the first adsorption cylinder rotates, and the panel moves, so that the first polarizing film in contact with the surface of the first adsorption cylinder is attached to the first surface of the panel.
Description
RELATED APPLICATIONS
This application claims priority to korean patent application No. 10-2014-0026239 filed on 5/3/2014 in korean patent office, the entire contents of which are incorporated herein by reference.
Technical Field
The invention relates to a film attaching system and a film attaching method.
Background
the present invention relates to a system and a method for attaching polarizing films to both surfaces of a panel in a process of manufacturing a display panel such as a Liquid Crystal Display (LCD) module, in which the polarizing films are attached to the upper and lower surfaces of the panel so that the upper and lower surfaces of the panel have optical anisotropy (optical anisotropy) in a process of manufacturing the display panel such as the LCD module.
The conventional polarizing film attachment method includes a sheet-to-panel (sheet-to-panel) method and a roll-to-panel (roll-to-panel) method.
The sheet-to-panel attachment method is a method of supplying and attaching polarizing film sheets cut to different panel sizes, and the roll-to-panel attachment method is a method of attaching a film supplied in a state of a distribution roll to a panel.
According to Korean patent laid-open No. 10-0975501, as a method for attaching a polarizing film to a panel, a roll-to-panel method and a panel-convolute method were used.
in detail, according to the conventional art, two film rolls having the same direction of optical anisotropy are used, a polarizing film is attached to one surface of a panel so that the optical anisotropy is perpendicular to each other, and then the panel is turned by 90 degrees so that the polarizing film is attached to the other surface. In order to attach the polarizing film to the panel, a method is applied in which the panel and the polarizing film are passed between a pair of rollers, and the polarizing film is attached to the panel by a pressing force of the rollers.
this prior art film attachment method has the following disadvantages.
first, the front end of the film is not aligned with the panel accurately, and thus there is a disadvantage in that the film is not aligned with the panel accurately.
Second, in the structure in which the film is attached to the panel while removing the release paper and the film is applied to the panel by pressing the film with a roller, there are disadvantages in that the precision of film attachment is lowered and the possibility of air bubbles being generated between the film and the panel during the attachment process is high.
Third, since there is no process of inverting the upper and lower surfaces of the panel after the film is attached to one side surface of the panel, it is necessary to provide a device including a film transfer device and a cutting device, which is required to attach the film to the other side surface of the panel, on the upper portion of the panel. As a result, there is difficulty in the construction of the film application system.
disclosure of Invention
the present invention has been made to solve the above-described problems.
A film attaching system according to an embodiment of the present invention for achieving the above-described object is a film attaching system for attaching polarizing films having optical anisotropy to both surfaces of a panel, the film attaching system including: a first polarizing film attaching system for attaching a first polarizing film to a first surface of the panel, and a second polarizing film attaching system for attaching a second polarizing film to a second surface of the panel; the first polarizing film attaching system includes: a panel transfer part for transferring the panel to the first polarizing film attaching region, a film supply part for supplying the first polarizing film unit, the first polarizing film unit includes the first polarizing film, a protective film attached to one surface of the first polarizing film, a release paper attached to the other surface of the first polarizing film, a film transfer part, a cutter for transferring the first polarizing film, a first suction cylinder for fully cutting (fusing) the first polarizing film unit transferred by the film transfer part, a first polarizing film unit which is rotated in a state that the first polarizing film unit in a sheet shape completely cut by the cutter is adsorbed by an outer peripheral surface thereof to guide the first polarizing film unit to the first polarizing film adhering region, and a release paper removing part, a release paper for peeling the first polarizing film unit adsorbed by the first adsorption cylinder; the first polarizing film unit cut by the cutter rotates by a predetermined angle around a vertical axis before reaching the first film attaching region; in the first polarizing film attaching region, the first adsorption cylinder rotates, and the panel moves, so that the first polarizing film contacting the surface of the first adsorption cylinder is attached to the first surface of the panel.
the film attaching system and the film attaching method according to the embodiments of the present invention having the above-described structure have the following effects.
First, since the panel passes between the adsorption cylinder and the attachment roller and the film is attached in a state where the polarization film in a state where the release paper is removed is adsorbed by the adsorption cylinder, there is an advantage in that alignment (alignment) accuracy between the film and the panel is improved and a possibility of generation of bubbles between the film and the panel is remarkably reduced.
Second, after the film is attached to one side surface of the panel, the film is attached to the other side surface of the panel in such a manner that the panel is turned upside down, so that a device for attaching the film to one side surface and the other side surface of the panel can be provided to the lower side of the panel, thereby having an advantage that the construction of the film attaching system is easy.
Drawings
FIG. 1 is a cross-sectional view of a polarizing film unit used in a film attaching system according to an embodiment of the present invention.
fig. 2 is a cross-sectional view of a panel to which a polarizing film is attached by means of a film attaching system of an embodiment of the present invention.
FIG. 3 is a flow chart schematically illustrating a film attaching method of the film attaching system according to the embodiment of the present invention.
Fig. 4 is a flowchart illustrating an upper polarization film attaching process performed in the film attaching system according to the embodiment of the present invention.
fig. 5 is a diagram schematically showing a process for attaching the upper polarizing film.
Fig. 6 and 7 are process diagrams illustrating a film turning method according to another embodiment of the present invention.
Fig. 8 is a flowchart illustrating a lower polarization film attaching process performed in the film attaching system according to the embodiment of the present invention.
Fig. 9 is a diagram schematically showing a process for attaching the lower polarizing film.
Detailed Description
Hereinafter, a film sticking system and a film sticking method according to embodiments of the present invention will be described in detail with reference to the drawings.
fig. 1 is a sectional view of a polarizing film unit used in a film attachment system according to an embodiment of the present invention, and fig. 2 is a sectional view of a panel to which a polarizing film is attached by the film attachment system according to the embodiment of the present invention.
referring to fig. 1 and 2, a polarizing film unit (polarizing film unit) according to an embodiment of the present invention includes an upper polarizing film unit (upper polarizing film unit)20 and a lower polarizing film unit (lower polarizing film unit)40 as an optical film having optical anisotropy. The upper polarizing film unit 20 and the lower polarizing film unit 40 may be defined as a first polarizing film unit and a second polarizing film unit, respectively.
In detail, the upper polarizing film unit 20 and the lower polarizing film unit 40 are provided in a roll form, and both the film units form an absorption axis in a longitudinal direction of the film. That is, the upper polarizing film unit 20 and the lower polarizing film unit 40 have the same optical anisotropy. The upper polarizing film unit 20 is attached to the upper surface of the panel 10, and the lower polarizing film unit 40 is attached to the lower surface of the panel 10.
In order to achieve the polarization effect, the absorption axis of the upper polarizing film unit 20 and the absorption axis of the lower polarizing film unit 40 are attached to the upper surface and the lower surface of the panel 10 in a crossed state, respectively.
for this, the panel 10 has a rectangular shape, the upper polarizing film unit 20 has a width equal to a short side of the panel 10 and a length equal to a long side of the panel 10. On the contrary, the lower polarization film unit 40 has a width equal to a long side of the panel and a length equal to a short side of the panel 10. Then, one of the upper polarizing film unit 20 and the lower polarizing film unit 40 is rotated by about 90 degrees and then attached to the panel 10. Hereinafter, a mode in which the upper polarizing film unit 20 is convoluted and attached to the panel 10 will be described as an example. However, it should be noted that the idea of the present invention is also included in the present invention to make the lower polarizing film unit 40 swirl and adhere to the panel 10.
The above-described polarizing film unit 20, 40 may include: polarizing films 11, 12; a protective film (protection film)13 attached to the upper surfaces of the polarizing films 11 and 12; and release paper (release film)14 bonded to the lower surfaces of the polarizing films 11 and 12. The release paper 14 is removed before the polarizing films 11 and 12 are attached to the panel 10, so that the surfaces of the polarizing films 11 and 12 contacting the release paper 14 are attached to the upper surface or the lower surface of the panel 10. Also, the protective film 13 may be removed in a certain step after the process of attaching the polarizing films 11 and 12 to the panel 10. The polarizing films 11 and 12 include an upper polarizing film 11 and a lower polarizing film 12. The upper and lower polarizing films 11 and 12 may be defined as a first polarizing film and a second polarizing film.
As shown in fig. 2, the upper polarizing film 11 is attached to the upper surface of the panel 10, and the lower polarizing film 12 is attached to the lower surface of the panel 10. The protective films bonded to the polarizing films 11 and 12 are removed.
the panel may include a display panel (a glass panel in which a liquid crystal cell is sealed) provided in a liquid crystal display device.
Hereinafter, the process of attaching the polarizing films 11 and 12 to the panel 10 will be described in detail with reference to the drawings.
FIG. 3 is a flow chart schematically illustrating a film attaching method of the film attaching system according to the embodiment of the present invention.
Referring to fig. 3, the panel 10 is transferred to the film attaching area in order to attach the polarizing film (step S10). Before that, the polarizing film units 20 and 40 are transferred to the film attaching area in a state where the release paper is removed.
In this state, the polarizing film 11 is attached to the lower surface of the panel 10 (step S20), and the panel 10 is rotated 180 degrees around the horizontal axis to reverse the upper and lower surfaces (step S30).
Then, in a state where the upper and lower surfaces of the panel 10 are reversed, the lower polarizing film 12 is attached to the lower surface of the panel 10, and the film attaching process is terminated.
Hereinafter, the surface of the panel 10 to which the upper polarizing film 11 is attached is defined as a first film, and the surface of the panel 10 to which the lower polarizing film 12 is attached is defined as a second surface.
fig. 4 is a flowchart illustrating an upper polarization film attaching process performed in the film attaching system according to the embodiment of the present invention, and fig. 5 is a diagram schematically illustrating an upper polarization film attaching process diagram.
Referring to fig. 4, in order to attach the polarizing film 11 to the panel 10, the upper polarizing film unit 20 is supplied in a roll sheet (step S21), and the supplied upper polarizing film unit 20 is cut in full to match the size of the panel 10 (step S22). The full cutting means that the protective film 13, the upper polarizing film 11, and the release paper 14 of the upper polarizing film unit 20 are completely cut. Therefore, the upper polarizing film unit 20 supplied in the roll sheet shape as described above is cut into a sheet shape to match the size of the panel 10.
on the other hand, the cut sheet-shaped upper polarizing film element 20 is rotated by 90 degrees by a rotator (to be described later) (step S23).
the release paper 14 of the rotated upper polarizing film unit 20 is peeled (step S24), and the protective film 13 and the upper polarizing film 11 are partially sucked by a suction cylinder (to be described later).
The upper polarizing film 11 is attached to the first surface of the panel 10 (step S25).
The upper polarizing film attaching system of the present invention will be described in more detail with reference to fig. 5. The upper polarizing film unit 20 provided in a state of being wound around the film roll 21 is unwound and transferred to the film cutting area by the film transfer portion 22. Accordingly, a portion of the upper polarizing film unit 20 wound around the film roll 21 may be defined as a film supplying portion.
The film transfer unit 22 is a unit including a plurality of rollers and various structures including a tension adjusting device, and transfers the film to the film cutting area while maintaining tension (tension) tightly. The structure of the film transfer unit 22 may be the same as that suggested in the above-described conventional art, and thus, a detailed description thereof will be omitted.
In detail, the width of the upper polarizing film unit 20 may be formed to be equal to the length of the short side portion of the panel 10. The upper polarizing film unit 20 transferred by the film transfer unit 22 determines whether it is defective or not while passing through the defect detection device 24. The upper polarizing film unit 20 of the failure detection device 24 is guided to the bed 23 and is completely cut by the cutter 25. The cutter 25 cuts the upper polarizing film unit 20 at an interval equal to the length of the long side of the panel 10.
When the defective portion is detected by the defect detection device 24, the defective sheet portion can be removed by cutting the defective portion at a position spaced apart from the defective portion by a predetermined distance in the front-rear direction. The cutting interval of the upper polarizing film unit 20 cut by the cutter 25 to remove the defective portion may be set to be smaller than the length of the long side of the panel 10 or larger than the length of the long side of the panel 10 according to the size of the defective portion.
On the other hand, the upper polarizing film unit 20 cut by the cutter 25 is rotated by 90 degrees about the vertical axis by the film rotator 26 and guided to the adsorption bed 27. In other words, the film turning means 26 turns the short side portion of the upper polarizing film unit 20 in the transfer direction so that the long side portion is directed in the transfer direction.
the upper polarization film unit 20 turned 90 degrees in a state of being adsorbed by the film turning means 26 is transferred to the adsorption bed 27 by the film turning means 26, and is separated from the film turning means 26 by releasing the adsorption force of the film turning means 26 in a state of being placed on the adsorption bed 27. Then, the long side portion of the upper polarizing film unit 20 is transferred toward the adsorption cylinder (adsorption drum)28 in a state of being directed toward the transfer direction by the adsorption bed 27. The adsorption bed 27 may include a conveyor belt.
The suction cylinder 28 has a vacuum suction hole (not shown) formed in its outer peripheral surface for sucking vacuum, or an adhesive sheet having a predetermined level of adhesive force is fixed to the outer peripheral surface of the suction cylinder 28. The adsorption cylinder 28 is in contact with the front end of the upper polarizing film unit 20. Thereafter, the adsorption cylinder 28 is rotated counterclockwise in the drawing, and the method of adsorbing or bonding the polarizing film unit 20 to the outer circumferential surface of the adsorption cylinder 28 is changed.
hereinafter, although the case where the suction cylinder 28 is provided by the vacuum suction method will be described, the operation is the same in the case of the method of bonding sheets.
in the case where the adsorption cylinder 28 is provided as an adhesive sheet, the adhesive force of the adhesive sheet needs to be adjusted. That is, when the upper polarizing film unit 20 is attached to the panel 10, the adhesive force of the adhesive sheet may be sufficient to separate the protective film 13 from the adhesive sheet.
the adsorption cylinder 28 rotates the upper polarization film unit 20 to adsorb the upper polarization film unit 20, so that the upper polarization film unit 20 is positioned on the bottom surface of the panel 10. The suction cylinder 28 is rotated to release the suction force, and the upper polarizing film 11 is attached to the panel 10.
in detail, the upper surface of the upper polarizing film unit 20 transferred through the adsorption bed 27, that is, the portion of the protective film 13 is in close contact with the outer circumferential surface of the adsorption cylinder 28. The suction cylinder 28 gradually sucks the protective film 13 in close contact therewith. Therefore, the upper polarizing film unit 20 is gradually adsorbed by the surface of the adsorption cylinder 28 from the front end portion to the rear end portion thereof. The upper polarizing film unit 20 is rotated in a state of being adsorbed by the adsorption cylinder 28.
also, the release paper 14 of the upper polarizing film unit 20 should be removed before being absorbed by the panel 10. A release paper removing part 29 is disposed at a front side of the adsorption cylinder 28 so that the release paper 14 is separated when the upper polarization film unit 20 is rotated integrally with the adsorption cylinder 28.
in detail, the release paper removing unit 29 includes: an adhesive tape (attaching tape)292 for attaching the release paper 14; a release paper recovery roller; and a release roller (releaseroller)293 for selectively contacting the adhesive tape 292 with the release paper 14 of the upper polarizer unit 20 adsorbed by the adsorption cylinder 28. The above release paper recovery roller may include: an unwinding roller (291) for winding the tape 292 around an outer circumferential surface of the release paper collecting roller and rotating the tape 292 in a direction in which the tape 292 is unwound; and a winding roller 294 for winding the adhesive tape 292 unwound from the unwinding roller 291.
The separation roller 293 is disposed between the unwinding roller 291 and the winding roller 294, and an outer circumferential surface of the separation roller 293 is in close contact with a back surface of the tape 292. The separation roller 293 is brought into close contact with the suction cylinder 28, and the tape 292 is brought into contact with the upper polarizing film unit 20. The adhesive tape 292 has an adhesive force greater than that of the release paper 14 which is kept attached to the upper polarizing film 21.
while the upper polarizing film unit 20 is rotated integrally with the adsorption cylinder 28 in a state of being adsorbed by the adsorption cylinder 28, the release paper 14 portion of the upper polarizing film unit 20 is adhered to the adhesive tape 292 by the release paper removing unit 29 and is collected by the winding roller 294. The protective film 13 and the upper polarizing film 11 are partially rotated and moved to the film attaching area where the panel 10 is transferred.
On the other hand, a panel transfer unit 30 is provided above the adsorption cylinder 28, and the panel transfer unit 30 transfers the panel 10 to be a polarization film attachment target to an upper polarization film attachment region. The panel 10 is transferred to the panel transfer unit 30 by the panel supply unit 31.
in detail, the panel transfer unit 30 may include: an inlet-side transfer unit 32 for transferring the panel 10 to an inlet side of the upper polarizing film attachment region; an outlet-side transfer unit 33 for transferring the panel 10 separated from the upper polarizing film attachment region to a next step, i.e., a lower polarizing film attachment step; and a panel supply unit 31 for sucking the panel 10 and positioning the panel 10 at the inlet-side transfer part 32.
the inlet-side transfer portion 32 and the outlet-side transfer portion 33 may include a transfer device including a conveyor or a plurality of rollers. An application roller 36 is provided in the film application region, and the application roller 36 may be disposed at a position spaced apart from the upper surface of the suction cylinder 28 by a distance equal to the thickness of the panel 10. The sticking roller 36 can move up and down.
The panel 10 guided by the inlet-side feed unit 32 is attached to the polarizing film 11 adsorbed by the adsorption cylinder 28 while passing through a space between the adhesion roller 36 and the adsorption cylinder 28. The panel 10 is placed on the panel transfer unit 30 and moved with its long side portion facing the moving direction.
more specifically, the panel 10 includes a first surface 101 to which the upper polarizing film 11 is attached and a second surface 102 to which the lower polarizing film 12 is attached, and the surface to which the films are attached is drawn toward the film attaching area in a state of facing the adsorption cylinder 28. That is, in the upper polarizing film attachment region, the first surface 101 moves toward the adsorption cylinder 28.
The surface of the upper polarizing film 11 separated by the release paper 14 and exposed to the outside faces the first surface 101 of the panel 10. The suction drum 28 rotates at the same linear velocity as the moving velocity of the panel 10, and the upper polarizing film 11 is adhered to the first surface 101 of the panel 10 by the pressure of the adhering roller 36.
As the upper polarizing film 11 is attached to the panel 10, the adsorption state of the adsorption cylinder 28 is gradually released, so that the upper polarizing film 11 attached to the panel 10 is partially separated from the adsorption cylinder 28.
In this way, in a state where the upper polarizing film 11 is attached to the adsorption cylinder 28, the adsorption cylinder 28 rotates along the surface of the panel 10, and the upper polarizing film 11 is gradually attached to the surface of the panel 10, thereby minimizing the generation of bubbles between the films and the panel.
As in the prior art, the film is provided in a state of forming a predetermined angle from the panel to the upper or lower side when viewed from the side, and in the case of the structure of rotating and attaching the film to the panel by an additional pressing roller, there is a disadvantage that a possibility of generating bubbles between the film and the panel is high in the film attaching process.
Furthermore, the film is irregularly stretched by the pressure of the pressure roller, the film becomes thin, and the film is attached to the panel in an overlapping manner, so that a phenomenon can occur in which the alignment degree (alignment) is lowered, or the rear end portion of the film becomes longer than the rear end portion of the panel as the film is stretched, and the film is exposed from the panel.
However, according to the present invention, the film is gradually brought into contact with the panel in a state of being sucked by the suction cylinder, thereby having an advantage that the above problems occurring in the related art do not occur.
The panel to which the upper polarizing film 11 is attached while passing through the attaching roller 36 and the adsorption cylinder 28 is moved to the next step by the outlet-side transfer part 33. The long side portion of the panel 10 moves in the transfer direction, so that the upper polarizing film 11 and the panel 10 are accurately aligned.
the panel 10 transferred along the outlet-side transfer portion 33 is inverted by 180 degrees by an inverting device (inverting device) 50. That is, the upper polarizing film 11 is rotated 180 degrees around the horizontal axis so that the first surface 101 faces upward and the second surface 102, which is the opposite surface, faces downward. The panel 10 is transferred to the lower polarization film attachment region in a vertically inverted state. As an example of the inverting device 50, although not specifically shown, a robot arm structure that rotates the panel 10 so as to grip the upper and lower surfaces of the panel 10, a robot arm structure that rotates the panel 10 so as to grip the side surface of the front end portion or the side surface of the rear end portion of the panel 10, or the like may be used.
On the other hand, a defect is found by the defect detecting device 24, and the upper polarizing film unit 20 including the defective portion is cut into a predetermined size by the cutter 25. Then, the defective film portion is rotated so as to be sucked by the suction cylinder 28, and then, from the moment when the release paper 14 portion is stuck to the tape 292, the suction force of the suction cylinder 28 is gradually removed, thereby releasing the suction state. In other words, the defective film portion is collected by the wind roller 294 without moving to the film sticking region while releasing the suction state of the suction cylinder 28 portion equal to the region in close contact with the separation roller 293. According to this structure, since the defective film removing function is performed together with the release paper removing part 29, there is an advantage that it is not necessary to additionally provide a removing means for removing the defective film portion as disclosed in the prior art (fig. 5 of korean patent No. 10-0975501).
On the other hand, in the case where the adsorption cylinder 28 is of the adhesive sheet type, the defective thin film can be removed by adding a structure in which the thin film turning means 26 is moved in the horizontal direction.
fig. 6 and 7 are process diagrams illustrating a film turning method according to another embodiment of the present invention.
Hereinafter, the same reference numerals are used for the same components as those described in fig. 5, and the description thereof will be omitted.
referring to fig. 6 and 7, the upper polarization film unit 20, which is completely cut by the cutter 25 at a length equal to the length of the long side portion of the panel 10, is sucked by the suction cylinder 28. At this time, the suction tube 28 is rotated while being moved in a direction perpendicular to the direction in which the upper polarizing film unit 20 is unwound, so that the cut upper polarizing film unit 20 is sucked by the suction tube 28. Hereinafter, a direction perpendicular to the direction in which the upper polarizing film unit 20 is unwound is defined as a first direction, and a direction in which the upper polarizing film unit 20 is unwound is defined as a second direction. Accordingly, the suction cylinder 28 is moved in the first direction while rotating, and the cut upper polarization film unit 20 is sucked to the outer circumferential surface of the suction cylinder 28.
Under such a condition, the length of the adsorption cylinder 28 illustrated in fig. 5 to 7 is the same as or greater than the length of the long side portion of the cut upper polarization film unit 20, and the circumference of the adsorption cylinder 28 is at least the same as or greater than the length of the short side portion of the cut upper polarization film unit 20.
On the other hand, in a state where the cut upper polarization film unit 20 is adsorbed by the adsorption cylinder 28, the upper polarization film unit 20 is rotated by 90 degrees around the vertical axis Y by the adsorption cylinder 28. Then, the suction cylinder 28 is moved toward the release paper removing unit 29 while being rotated 90 degrees about the vertical axis Y, and a release paper separating process is performed. The subsequent process is the same as that described in fig. 5, and thus omitted.
As described above, the present embodiment is characterized in that the film is directly rotated by the suction cylinder 28 without using an additional film rotating device, and the film is guided to the film sticking region in a state of being rotated by 90 degrees.
Fig. 8 is a flowchart illustrating a lower polarization film attachment process performed in the film attachment system according to the embodiment of the present invention, and fig. 9 is a diagram schematically illustrating a lower polarization film attachment process diagram.
Referring to fig. 8, in order to attach the lower polarizing film 12 to the second surface 102 of the panel 10, the roll-sheet-shaped lower polarizing film unit 40 is first supplied (step S41). In this case, the width of the lower polarizing film unit 40 may be formed to be equal to the length of the long side portion of the panel 10.
in detail, the supplied lower polarizing film unit 40 is half-cut (half-cut) at an interval equal to the length of the short side portion of the panel 10 (step S42). The half-cut means that the protective film 13 excluding the release paper 14 and the lower polarizing film 12 are half-cut by a cutter. At this time, a part of the release paper 14 may be cut, but not completely cut.
Then, a part of the half-cut lower polarizing film unit 40, that is, the protective film 13 and the lower polarizing film 12 is sucked by a suction cylinder (to be described later), and the release paper 14 is partially peeled from the lower polarizing film 12 and is collected by being wound around a release paper collecting roll (to be described later) (step S43). Finally, the surface of the lower polarizer film 12 separated and exposed by the release paper 14 is attached to the second surface 102 of the panel 10, thereby ending the lower polarizer film attaching process.
As described in more detail below with reference to fig. 9, a lower polarizing film attaching system according to an embodiment of the present invention includes: a film roll 210 for winding the lower polarizing film unit 40; a film transfer unit 220 for transferring the lower polarizing film unit 40 to a cutting area; a defect detection device 240 for detecting a defect in the lower polarization film unit 40; a cutter 250 for half-cutting the lower polarization film unit 40; an adsorption cylinder 280 for adsorbing the half-cut lower polarization film unit 40; a release paper recovery roller 394 for recovering the uncut release paper 14; and a separation roller 393 selectively brought into close contact with the adsorption cylinder 280 such that the half-cut lower polarization film unit 40 is selectively adsorbed by the adsorption cylinder 280.
Further, the lower polarizing film attaching system includes: a panel transfer unit 30 for guiding the panel 10 with its upper and lower surfaces reversed to the lower polarization film attaching area in a state where the upper polarization film 11 is attached; and a panel supply unit 310 for transferring the panel 10 to the panel transfer unit 30.
The panel transfer system of the lower polarizing film attaching system is almost similar to the upper polarizing film attaching system. That is, the panel transfer unit 30 of the lower polarizing film attachment system includes an attachment roller 360, and the attachment roller 360 presses the panel 10 from the upper side of the adsorption cylinder 280 to attach the lower polarizing film 12 to the second surface 102 of the panel 10.
In detail, the film roll 210, the film transfer part 220, the defect detecting device 240, the cutter 250, the suction cylinder 280, the release roll 393, the release paper recovery roll 394, the panel transfer part 30, the panel supply unit 310, and the attachment roll 360 are the same as those of the film roll, the film transfer part, the defect detecting device, the cutter, the suction cylinder, the release roll, the release paper recovery roll, the panel transfer part, the panel supply unit, and the attachment roll constituting the upper polarization film attachment system in terms of functions, and thus, a repetitive description thereof will be omitted. The release roller 393 and the release paper recovery roller 394 may be defined as a release paper removing unit.
The panel transfer unit 30 further includes: an inlet-side transfer unit 34 for transferring the panel 10 with its upper and lower surfaces reversed to the inlet side of the lower polarizing film attachment region in a state where the upper polarizing film 11 is attached; and an outlet-side transfer unit 35 for transferring the panel 10 separated from the lower polarization film attachment region. The inlet-side transfer portion 34 and the outlet-side transfer portion 35 may include a transfer device including a conveyor or a plurality of rollers.
The inlet-side transfer unit 34 of the lower polarizing film bonding system may be configured to extend from the outlet-side transfer unit 33 of the upper polarizing film bonding system. That is, in the structure in which the panel 10, which is inverted up and down, is placed on the inlet-side transfer part 34 and transferred to the film sticking area, the panel supply unit 310 may not be additionally provided.
More specifically, the panel 10 may be transferred to the inlet side of the lower polarizing film attachment region through a vertical inversion process such that the first surface 101 to which the upper polarizing film 11 is attached faces upward and the second surface 102 faces downward, i.e., faces the adsorption cylinder 280.
The width of the lower polarizing film unit 40 is formed to be equal to the length of the long side portion of the panel 10, and the cutter 250 half-cuts the lower polarizing film unit 40 at an interval equal to the length of the short side portion of the panel 10. The half cut and the full cut may be set by adjusting the cutting depth of the cutter. That is, the half cut and the full cut are determined according to the lowering depth of the cutter. The half-cut may be made to have the same depth or different cut depths at the center and edge portions in the width direction over the entire width of the lower polarizing film unit 40.
on the other hand, the lower polarization film unit 40 half-cut by the cutter 250 at an interval equal to the length of the short side portion of the panel 10 moves toward the adsorption cylinder 280. At this time, the cut lower polarizing film unit 40 is not transferred by an additional transfer device, but transferred by winding the uncut release paper 14 around the release paper recovery roller 394.
Specifically, the release roller 393 is brought into close contact with the suction cylinder 280, so that the surface of the protective film 13 of the lower polarizing film unit 40 is sucked by the suction cylinder 28, and the release paper 14 moves toward the release paper collecting roller 394. That is, the protective film 13 and the lower polarizing film 12 are rotated so as to be transferred to the suction cylinder 280, and only the release paper 14 is peeled from the lower polarizing film 12 and wound around the release paper collecting roll 394. The surface of the lower polarizing film 12, which is peeled and exposed by the release paper 14, is attached to the second surface 102 of the panel 10. In other words, the lower polarizing film 12 and the panel 10 are attached to each other while passing between the attaching roller 360 and the suction cylinder 280. The panel 10 to which the lower polarizing film 12 is attached is transferred to the next place in a state of being placed on the outlet-side transfer portion 35. In the panel 10, only the upper and lower surfaces are reversed while passing through the upper and lower polarizing film attaching systems, and the long and short side portions do not turn. That is, the long side portion is transferred while being maintained in the transfer direction, and the transfer method of the panel 10 is different from the conventional method described above.
on the other hand, when a defect is found by the defect detection device 240, the defective portion is half-cut into a predetermined size by the cutter 250. The half-cut defective portion is transferred to the separation roller 393 side. At this time, the separation roller 393 operates differently from the lower polarizing film unit 40 that is a good product when it is transferred. That is, when the non-defective lower polarizing film unit 40 is transferred, the peeling roller 393 moves toward the suction cylinder 280 to adhere the half-cut lower polarizing film unit 40 to the suction cylinder 280, but when the defective portion is transferred, the peeling roller 393 maintains a state of being spaced apart from the suction cylinder 280. In this way, the defective portion is not sucked by the suction cylinder 280, but wound around the release paper collecting roller 394 along the release paper 14. Therefore, an additional device for recovering the defective film is not required.
In the above embodiment, the width of the upper polarizing film unit 20 is provided to be equal to the length of the short side portion of the panel 10, and the width of the lower polarizing film unit 40 is provided to be equal to the length of the long side portion of the panel 10. That is, the width of the upper polarizing film unit 20 may be provided to be equal to the length of the short side portion of the panel 10, and the width of the lower polarizing film unit 40 may be provided to be equal to the length of the short side portion of the panel 10.
Further, although the above-described example in which the upper polarizing film is rotated by 90 degrees has been described, the upper polarizing film is not limited to 90 degrees and may be provided so as to be rotated by a predetermined angle according to the arrangement structure of the attaching system.
Claims (17)
1. a film attaching system for attaching polarizing films having optical anisotropy to both sides of a panel, said film attaching system being characterized in that,
The method comprises the following steps:
A first polarizing film attaching system for attaching a first polarizing film to a first surface of the panel, and a second polarizing film attaching system for attaching a second polarizing film to a second surface of the panel;
The first polarizing film attaching system includes:
A panel transfer unit for transferring the panel to the first polarizing film attaching region,
A film supply part for supplying a first polarizing film unit including the first polarizing film, a protective film attached to one surface of the first polarizing film, and a release paper attached to the other surface of the first polarizing film,
A film transfer part for transferring the first polarizing film,
A cutter for cutting the first polarizing film unit transferred by the film transfer part,
A first suction cylinder which rotates in a state that the first polarizing film unit in a sheet shape completely cut by the cutter is sucked by an outer peripheral surface thereof to guide the first polarizing film unit to the first polarizing film sticking region, and
A release paper removing unit for removing the release paper of the first polarizing film unit adsorbed by the first adsorption cylinder;
The first polarizing film unit cut by the cutter rotates by a predetermined angle around a vertical axis before reaching the first film attaching region;
The first polarizing film unit cut by the cutter is absorbed by the first absorption cylinder;
The first adsorption cylinder guides the first polarizing film unit to the first polarizing film attachment region after rotating a predetermined angle around a vertical axis in a state of adsorbing the first polarizing film unit;
In the first polarizing film attachment region, the first suction cylinder rotates about a rotation axis, and the panel moves in a direction passing through an upper surface of the first suction cylinder, so that the first polarizing film in contact with a surface of the first suction cylinder is attached to a first surface of the panel.
2. the film application system according to claim 1, wherein the release paper removing unit includes:
an adhesive tape;
an unwinding roller for unwinding the adhesive tape;
a winding roller for winding the adhesive tape; and
And a separation roller for pressing the adhesive tape so that the adhesive surface of the adhesive tape is in close contact with the first suction cylinder.
3. The film application system of claim 1,
The first film adhering area is provided with a first adhering cylinder, and the first adhering cylinder is provided with a first film adhering area;
when the panel passes between the sticking roller and the first suction cylinder, the first polarizing film sucked by the first suction cylinder is stuck to the first surface of the panel by the pressure of the sticking roller.
4. the film attachment system of claim 1, wherein said second polarizing film attachment system comprises:
A panel transfer unit for transferring the panel with the first polarizing film to a second polarizing film attaching area;
a film supply unit for supplying a second polarizing film unit including the second polarizing film, a protective film attached to one surface of the second polarizing film, and release paper attached to the other surface of the second polarizing film;
A film transfer unit for transferring the second polarizing film unit;
A half-cutting cutter for cutting the protective film and the second polarizing film of the second polarizing film unit transferred by the film transfer part, and not cutting the release paper or cutting only a part of the release paper;
A second suction cylinder which rotates in a state where the protective film and the polarizing film of the second polarizing film unit, which is half-cut by the half-cutting cutter, are sucked on the outer peripheral surface; and
and a release paper removing part for removing the release paper of the second polarizing film unit from the second polarizing film.
5. The film attachment system of claim 4, wherein the release paper removing portion of the second polarizing film attachment system comprises:
A release paper recovery roller for recovering the release paper of the second polarizing film unit in a winding manner; and
And a separation roller for selectively closely contacting the second polarizing film unit with the second adsorption cylinder.
6. the film sticking system according to claim 4, wherein the protective film of the second polarizing film unit is positioned in a direction of being in close contact with an outer peripheral surface of the second suction cylinder.
7. The film application system according to claim 1 or 4, wherein the first suction cylinder or the second suction cylinder is vacuum-sucked or fixed with an adhesive sheet on an outer peripheral surface.
8. The film attachment system according to claim 1, wherein the protective film of the first polarizing film unit is positioned in a direction of being in close contact with the outer peripheral surface of the first suction cylinder.
9. The film attachment system according to claim 1, further comprising a reversing device that reverses the panel to which the first polarizing film is attached by 180 degrees about a horizontal axis.
10. the film application system of claim 1, wherein the first suction drum has a rotation angle of 90 degrees or less.
11. A film attaching method for a film attaching system for attaching polarizing films having optical anisotropy to both surfaces of a panel, the film attaching method comprising:
a step of supplying and transferring a first polarizing film unit including a first polarizing film, a protective film attached to one surface of the first polarizing film, and release paper attached to the other surface of the first polarizing film;
transferring the panel to the first polarizing film attaching region;
A step of cutting the protective film of the first polarizing film unit to the release paper completely by a cutter;
A step of rotating the completely cut first polarization film unit by a predetermined angle around a vertical axis;
Peeling off the release paper of the convoluted first polarizing film unit; and
Moving the first polarizing film exposed by peeling the release paper to the first polarizing film attaching region and attaching the first polarizing film to the first surface of the panel,
The completely cut first polarizing film is sucked by a first suction cylinder, and then is guided to the first polarizing film sticking region while being rotated at an angle of 90 degrees or less by the first suction cylinder and being rotated integrally with the first suction cylinder.
12. The film attachment method according to claim 11, wherein the release paper is peeled by a release paper removing unit when the first polarizing film unit is rotated in a state of being adsorbed by the first adsorption cylinder and guided to the first polarizing film attachment region.
13. The film attaching method as set forth in claim 12, wherein when the first polarizing film is attached to the first surface of the panel, the suction state of the first suction cylinder is released, so that the first polarizing film is separated from the first suction cylinder.
14. the film attaching method as claimed in claim 13, wherein the panel to which the first polarizing film is attached while passing through the first film attaching region is inverted by 180 degrees by a panel inverting means.
15. The film attaching method according to claim 14,
further comprising:
A step of supplying the panel reversed by 180 degrees to the second polarization film attaching region,
A step of supplying and transferring a second polarizing film unit including a second polarizing film, a protective film attached to one surface of the second polarizing film, and a release paper attached to the other surface of the second polarizing film,
A step of half-cutting the part of the second polarizing film unit up to the protective film and the second polarizing film by a cutter,
a step of making the half-cut second polarization film unit adsorbed by the second adsorption cylinder and peeling the release paper,
A step of guiding the second polarizing film separated from the release paper by the rotation of the second adsorption cylinder to the second polarizing film attaching area, and
attaching the second polarizing film to a second surface of the panel when the panel passes through the second polarizing film attaching region;
The second surface is opposite to the first surface.
16. The film attaching method according to claim 15,
The first polarizing film and the second polarizing film have the same optical anisotropy;
a width of the first polarizing film unit has a size equal to one of a length of a long side portion or a length of a short side portion of the panel;
the width of the second polarizing film unit has a size equal to the other length of the long side portion or the short side portion of the panel.
17. A film attaching method for a film attaching system for attaching polarizing films having optical anisotropy to both sides of a panel, the film attaching method being characterized in that,
The method comprises the following steps:
a first polarizing film attaching step of attaching a polarizing film,
A panel inversion step, and
A second polarizing film attaching step;
the attaching step of the first polarizing film includes:
A step of supplying and transferring a first polarizing film unit having a width equal to a short side of the panel, wound in a roll form, and including a first polarizing film, a protective film attached to one surface of the first polarizing film, and a release paper attached to the other surface of the first polarizing film,
a step of transferring the panel to a first polarizing film attaching area and transferring the panel with a long side portion facing the attaching area,
A step of cutting the protective film of the first polarizing film unit to the release paper with a length equal to the long side of the panel by a cutter,
A step of transferring the sheet-like first polarizing film unit cut by the cutter to the outer peripheral surface of the first adsorption cylinder,
A step of guiding the first polarizing film unit to the first polarizing film attachment region after the first suction tube to which the first polarizing film unit is transferred is rotated at a rotation angle around a vertical axis,
a step of peeling off the release paper of the transferred first polarizing film unit, and
rotating the first suction drum to adhere the first polarizing film exposed by peeling the release paper to the first surface of the panel;
The panel inversion step includes:
A step of inverting the panel to which the first polarizing film unit is attached while the panel is being transferred to a second polarizing film attachment region with a long side portion facing the second polarizing film attachment region;
The attaching step of the second polarizing film includes:
A step of supplying and transferring a second polarizing film unit having a width equal to the long side of the panel, wound in a roll shape, and including a second polarizing film, a protective film attached to one surface of the second polarizing film, and a release paper attached to the other surface of the second polarizing film,
A half-cutting step of cutting the protective film and the second polarizing film of the second polarizing film unit by a length equal to the short side of the panel using a cutter without cutting the release paper or cutting only a part of the release paper,
A step of transferring one side of the half-cut protective film and the second polarizing film of the second polarizing film unit to a second adsorption cylinder and peeling off release paper, and
And attaching the second polarizing film to a second surface of the panel when the panel passes through the second polarizing film attaching region.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2014-0026239 | 2014-03-05 | ||
| KR1020140026239A KR102284463B1 (en) | 2014-03-05 | 2014-03-05 | System for attaching film and Method for attaching film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104898309A CN104898309A (en) | 2015-09-09 |
| CN104898309B true CN104898309B (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410371361.7A Expired - Fee Related CN104898309B (en) | 2014-03-05 | 2014-07-30 | Film attaching system and film attaching method |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR102284463B1 (en) |
| CN (1) | CN104898309B (en) |
| TW (1) | TWI597170B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101685328B1 (en) * | 2016-05-31 | 2016-12-09 | 주식회사 엘지화학 | The manufacturing method of optical film and optical film |
| KR102549326B1 (en) | 2016-06-09 | 2023-06-30 | 삼성전자주식회사 | Apparatus of lamination |
| JP6654113B2 (en) * | 2016-07-22 | 2020-02-26 | 日東電工株式会社 | Optical display panel manufacturing method and optical display panel manufacturing system |
| KR102042053B1 (en) | 2016-08-25 | 2019-11-07 | 주식회사 엘지화학 | The system for manufacturing display unit |
| CN109323163B (en) * | 2018-06-27 | 2021-03-30 | 深圳市烨光璇电子科技有限公司 | Method for manufacturing backlight module |
| CN110928000B (en) * | 2019-12-20 | 2022-08-30 | 深圳市八零联合装备有限公司 | Cloth sticking device and patch sticking equipment |
| KR102174485B1 (en) * | 2020-05-29 | 2020-11-04 | 주식회사 제이케이랩스 | Method for pressing adhesive film for display panel and apparatus using the same |
| KR102322626B1 (en) * | 2021-04-15 | 2021-11-05 | 신광호 | Swelling tape supply apparatus for battery of electric vehicle |
| CN115256963A (en) * | 2022-07-26 | 2022-11-01 | 无锡闻泰信息技术有限公司 | Film attaching method and electronic device |
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| CN201637971U (en) * | 2010-01-05 | 2010-11-17 | 李浩玄 | Polarizer sticking device |
| CN101923238A (en) * | 2009-06-12 | 2010-12-22 | 华映视讯（吴江）有限公司 | Method for manufacturing liquid crystal display device |
| CN102405438A (en) * | 2010-02-17 | 2012-04-04 | 住友化学株式会社 | Polarization film lamination apparatus, and LCD device production system equipped with same |
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| DE3208234C2 (en) * | 1982-03-06 | 1984-02-16 | Krones Ag Hermann Kronseder Maschinenfabrik, 8402 Neutraubling | Device for placing hose sections made of plastic film or the like. on vessels |
| KR20020019672A (en) * | 2000-09-06 | 2002-03-13 | 김순택 | Touch panel device having the means for perceiving the extant of the activation force |
| JP4755452B2 (en) * | 2005-06-30 | 2011-08-24 | 麒麟麦酒株式会社 | Adhesive coating apparatus, label sticking apparatus using the same, and adhesive film thickness measuring method |
| JP2010208103A (en) * | 2009-03-09 | 2010-09-24 | Hitachi High-Technologies Corp | Optical film sticking device |
| JP5511730B2 (en) * | 2010-09-03 | 2014-06-04 | 日東電工株式会社 | Continuous manufacturing method and apparatus for optical panel assembly |
| JP4863332B2 (en) * | 2011-08-06 | 2012-01-25 | 住友化学株式会社 | Polarizing film laminating apparatus and liquid crystal display manufacturing system |
| KR101835511B1 (en) * | 2012-03-06 | 2018-03-07 | 엘지디스플레이 주식회사 | Apparatus for attaching optical plate |
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2014
- 2014-03-05 KR KR1020140026239A patent/KR102284463B1/en active IP Right Grant
- 2014-07-16 TW TW103124423A patent/TWI597170B/en not_active IP Right Cessation
- 2014-07-30 CN CN201410371361.7A patent/CN104898309B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101923238A (en) * | 2009-06-12 | 2010-12-22 | 华映视讯（吴江）有限公司 | Method for manufacturing liquid crystal display device |
| CN201637971U (en) * | 2010-01-05 | 2010-11-17 | 李浩玄 | Polarizer sticking device |
| CN102405438A (en) * | 2010-02-17 | 2012-04-04 | 住友化学株式会社 | Polarization film lamination apparatus, and LCD device production system equipped with same |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI597170B (en) | 2017-09-01 |
| CN104898309A (en) | 2015-09-09 |
| TW201534477A (en) | 2015-09-16 |
| KR102284463B1 (en) | 2021-08-02 |
| KR20150104473A (en) | 2015-09-15 |
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