KR100880554B1 - Apparatus For Attaching Polarizer To LCD Panel - Google Patents

Abstract

Disclosed is a polarizer attachment device. The polarizing plate attachment device of the present invention, at least one film peeling unit having a pressure member that is pressure-sensitive to at least one corner region of the protective film to peel off the protective film from the polarizing plate, the corner region; An up / down actuator coupled to the film peeling unit and driving up / down the film peeling unit with respect to the protective film; And a diagonal movement actuator coupled to the film peeling unit and moving the film peeling unit in an oblique direction with respect to the front edge of the protective film for peeling off the protective film. According to the present invention, by allowing the protective film to be peeled off in a simple and effective manner through a simple structure, the maintenance time and work time of the apparatus can be shortened, and the probability of occurrence of process errors can be lowered. It can prevent damage.

Description

Apparatus For Attaching Polarizer To LCD Panel}

1 (a) and (b) is a view schematically showing the principle that the protective film is peeled through the polarizing plate attachment device according to the first embodiment of the present invention, respectively.

2 is a block diagram of a polarizing plate attachment apparatus according to a first embodiment of the present invention.

3 is a partially enlarged perspective view of the film peeling unit region shown in FIG. 2.

4 is a schematic plan view of FIG. 3.

5 and 6 are diagrams showing the operation of FIG. 2 step by step, respectively.

7 is a perspective view of a film peeling unit of a polarizing plate attachment apparatus according to a second embodiment of the present invention.

8 is a perspective view of a film peeling unit of a polarizing plate attachment apparatus according to a third embodiment of the present invention.

9 is a schematic configuration diagram of a polarizer attachment apparatus according to a fourth embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

1: polarizing plate 2: protective film

110a, 110b: film peeling unit 120: up / down actuator

130: oblique movement actuator 140: device body

150: linear movement actuator 160: clamping unit

164: detecting unit 166: peeling unit rotating unit

170: unit driving unit

The present invention relates to an apparatus for attaching a polarizing plate, and more particularly, by allowing the protective film to be peeled off in a simple and effective manner through a simple structure, it is possible to reduce the maintenance time and the working time of the device, as well as the process error. It is related with the polarizing plate attachment apparatus which can lower the occurrence probability of and can prevent that a polarizing plate is damaged.

Recently, the flat panel display (FPD) has begun to emerge as the electronic display industry is rapidly developing among the semiconductor industry.

A flat panel display (FPD) is an image display device that is thinner and lighter than a cathode ray tube (CRT), which has been mainly used as a display for a TV or a computer monitor, and includes a liquid crystal display (LCD, liquid). crystal displays), plasma display panels (PDPs), organic light emitting diodes (OLEDs), and the like.

One of such flat display (FPD) thin film transistor (TFT-LCD) liquid crystal displays (TFT-LCDs) injects a liquid crystal, which is an intermediate material between a solid and a liquid, between two thin upper and lower glass substrates. It is a device using a kind of optical switch phenomenon that displays the number or the image by generating the contrast by changing the arrangement of the liquid crystal molecules by the electrode voltage difference of the substrate.

Liquid crystal display (LCD) is replacing the existing cathode ray tube (CRT) at a high speed due to the excellent performance of thin, light weight, low power consumption. Therefore, it is widely used in electronic products such as electronic clocks, electronic calculators, TVs, notebook PCs, speed displays and driving systems of automobiles and aircrafts.

Such liquid crystal display (LCD) is largely released as a product through a TFT process, a cell process, and a module process.

The TFT process is very similar to the semiconductor manufacturing process, in which thin film transistors are arranged on a glass substrate by repeating deposition, photolithography, and etching.

The Cell process forms an alignment layer on the TFT bottom plate manufactured by the TFT process and the top plate which is a color filter so that the liquid crystals can be aligned well. The top and bottom plates are formed by corals and seal printing. It is a process of bonding.

The module process attaches a polarizing plate to the completed LCD panel, mounts an integrated circuit (Drive-IC), assembles it with a PCB (Printed Circuit Board), and then back-lights the unit. Point out a series of steps to assemble the tool.

The polarizing plate used in the module process serves to selectively transmit only light that is strongly attached to both sides of the LCD panel and vibrates in a specific direction among the light transmitted through the liquid crystal.

On the other hand, it is difficult to scratch or foreign matter on the surface of the polarizing plate in the process of transferring the polarizing plate to the LCD panel assembly plant. Therefore, after the polarizer is manufactured, a separate protective film is attached to the polarizer. Of course, when the polarizing plate attaching process proceeds substantially, the protective film is peeled off.

Initially, the worker has peeled off the protective film attached to the polarizing plate by hand, but due to the limitations of the manual work, the production efficiency is bound to be lowered, and in recent years, the so-called polarizer attachment device has been used.

The polarizing plate attaching device is a device that allows a series of processes for attaching the polarizing plate to the LCD panel after the peeling process of the protective film.

The polarizing plate attachment device, which has also been filed by the present applicant, is provided in the upper region of the polarizing plate support die with a polarizing plate support die for supporting the polarizing plate with a protective film on one surface thereof, and with the polarizing plate therebetween in the direction of the plate surface of the polarizing plate support die. It is provided with a movable device body and a plurality of film peeling units which have a roller adhered to the protective film and is coupled to the device body and peels the protective film from the polarizing plate in association with the movement of the device body. In addition, although not yet disclosed, the conventional polarizer attachment device filed by the present applicant further includes a pressing plate and a sensor between the plurality of rollers.

In the case of the pressing plate, the shear is placed slightly behind the front end of the roller. When the roller contacts the protective film, the pressing film is pressed together between the rollers so that the protective film adheres well to the roller, and the sensor is provided on the pressing plate. When it is dried by this roller, the protective film is dried to sense whether primary peeling has occurred.

Looking at the operation briefly, if the first peeling proceeds by adhering the protective film in a state in which the rollers are arranged in one side of the protective film and then the first peeling of the protective film by the sensor, a plurality of The clamping unit provided between the rollers to clamp the protective film and the device body is moved to the rear to move the clamping unit to the secondary peeling of the protective film.

By the way, in the case of such a conventional polarizing plate attachment device, when the protective film is to be peeled off from the polarizing plate applied to a large LCD panel, a substantially large number of rollers (for example, six on one side of the polarizing plate for 46-inch LCD panel, 12 rollers on both sides have been studied), which requires a lot of maintenance time and a lot of working time.

In addition, when an error occurs in any one of the plurality of rollers, a process error occurs that requires the peeling operation to be performed again from the beginning. In particular, if the same peeling operation is performed again on one polarizer, the possibility of particle generation may increase due to frequent movement of the device or interference with surrounding structures, and thus another polarizer may be damaged. Can cause problems.

Therefore, a method for reducing the number of pressurizing members that are pressure-adhered to the protective film, such as a roller or roller, may be required. However, in the case of simply reducing the number of pressurizing members, peeling of the protective film does not proceed well. Because it can cause more, research on this is needed.

An object of the present invention, by allowing the protective film to be peeled off in a simple and effective manner through a simple structure, not only can reduce the maintenance time and work time of the device, but also lower the probability of occurrence of process error, and also the polarizing plate It is to provide a polarizing plate attachment device that can prevent this damage.

The object, according to the present invention, has a pressure member that is pressure-adhesive pressure on at least one corner region of the protective film to peel off the protective film from the polarizing plate, at least one film peeling unit disposed in the corner region; An up / down actuator coupled to the film peeling unit and driving up / down of the film peeling unit with respect to the protective film; And a diagonal movement actuator coupled to the film peeling unit and moving the film peeling unit in an oblique direction with respect to the front edge of the protective film for peeling off the protective film. Is achieved.

Here, the at least one film peeling unit may be a pair of film peeling units disposed in the diagonal direction at both sides of the front edge of the protective film.

An apparatus body for supporting the pair of film peeling units; And a linear movement actuator for moving the apparatus main body in a linear direction for secondary peeling of the protective film that is primarily peeled by the oblique movement actuator.

The apparatus may further include a peeling unit rotating unit which is coupled to the apparatus body and rotates the pair of film peeling units by a predetermined angle to adjust the peeling angle of the pair of film peeling units with respect to the protective film.

The peeling angle may have a range of 5 degrees to 80 degrees based on the linear direction of the linear actuator.

The pressing member may be a pressing roller, the film peeling unit, the unit body; And a pair of roller support portions extending from one surface of the unit body and spaced apart from each other to rotatably support the pressure roller.

The pressing member may be a pressing roller, the film peeling unit, at least one winding roller spaced apart from the pressing roller; And a pressure-sensitive adhesive tape wound around the pressure roller and the at least one winding roller and coated with a pressure-sensitive adhesive material having a predetermined viscosity so as to be repeatedly used at least several times on an outer surface thereof. It may be wound in a closed loop (Closed Loop) to the pressure roller and the take-up roller in a sharp angle around the pressure roller.

Located on one side of the pair of film peeling unit, respectively, and may further include a clamping unit for clamping each of the corner areas of the protective film peeled off by the pressing member.

The clamping unit may include an actuator for clamping; And a gripper coupled to the clamping actuator so as to be rotatable and retracted to clamp an edge region of the protective film adhered to the pressing member.

The clamping unit may be provided on an outer side of the pair of film peeling units to clamp the edge region of the protective film on the outer side of the protective film.

It may further include a sensing unit coupled to the clamping unit for detecting whether the protective film is clamped.

The sensing unit may include a mirror coupled to the gripper; And an optical sensor coupled to the clamping actuator and detecting whether the protective film is clamped by reflecting light reflected through the mirror.

The apparatus may further include a unit driving unit connected to at least one of the pair of film peeling units to access and space the pair of film peeling units from each other.

The unit driving unit, an edge alignment unit driving unit for approaching and spaced apart from the other movable one of the pair of the film peeling unit, and the pair of film peeling unit approaching and opposing each other It may be any one selected from the unit driving unit for the central alignment method spaced apart.

The unit driving unit may be an edge alignment unit driving unit, the edge alignment unit driving unit, a drive motor; A ball screw shaft coupled to a rotation shaft of the drive motor and rotatable in a forward and reverse direction; And a shaft moving piece coupled to the ball screw shaft and movable in the longitudinal direction of the ball screw shaft, and connected to the other film peeling unit that is movable in at least one region.

On the other hand, the above object, according to the present invention, a pair of Y-axis gantry disposed in parallel with each other in both outer regions of the protective film to be peeled from the polarizing plate; An X-axis gantry coupled to the pair of Y-axis gantry to traverse the pair of Y-axis gantry and movable along a longitudinal direction of the pair of Y-axis gantry; A film peeling unit having a pressing member that is pressure-adhered in any one corner region of the protective film, the film peeling unit being movably coupled along the length direction of the X-axis gantry in the X-axis gantry; And the pair of Y-axis gantry, the X-axis gantry and the film peeling unit to move the film peeling unit in an oblique direction with respect to the front edge of the protective film so that the protective film is peeled off from the polarizing plate. It is also achieved by a polarizing plate attachment device comprising a control unit for controlling the movement of.

Herein, the control unit controls the movement of the X-axis gantry and the film peeling unit while the pair of Y-axis gantry, the X-axis gantry, and the film peeling unit are disposed at the origin of the peeling operation. The peeling unit is pressure-adhered to one corner region of the protective film, and then one of the pair of Y-axis gantry and the X-axis gantry is moved relative to the other one so that the protective film is in accordance with the diagonal direction. The primary peeling and the secondary peeling along the linear direction can be controlled to proceed continuously.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the accompanying drawings. Like reference numerals in the drawings denote like elements.

1 (a) and (b) is a view schematically showing the principle that the protective film is peeled through the polarizing plate attachment device according to the first embodiment of the present invention, respectively. With reference to this drawing, the process of peeling the protective film 2 from the polarizing plate 1 is demonstrated generally.

In the polarizing plate attaching device of the present embodiment, first, as shown in FIG. 1A, a part of both corner regions of the protective film 2 is adhered and peeled off. Then, a part of the protective film 2 is peeled from the polarizing plate 1 while pulling both corner regions of the partially peeled protective film 2 in the S1 and S2 directions (hereinafter, oblique directions). Then, the protective film 2 is finally pulled off the polarizing plate 1 by pulling the protective film 2 in the S3 direction (hereinafter, referred to as a straight line direction) shown in FIG.

As such, the edges of the protective film 2 are adhered to each other to be first peeled off in the diagonal direction, and then the second peeled off in the linear direction to allow the protective film 2 to be completely peeled off from the polarizing plate 1.

In this case, when the protective film 2 is peeled off, it is not necessary to increase the number of film peeling units 110a and 110b (see FIGS. 2 to 6) as in the prior art. That is, according to the present embodiment, the protective film 2 can be sufficiently and effectively peeled off only by the two film peeling units 110a and 110b and their simple structures. Therefore, the maintenance time and working time of the apparatus can be shortened, the probability of occurrence of a process error can be lowered, and the polarizing plate 1 can be prevented from being damaged. Hereinafter, the polarizer attachment device of the present embodiment will be described in detail with reference to FIGS. 2 to 6.

2 is a configuration diagram of a polarizing plate attaching device according to a first embodiment of the present invention, FIG. 3 is a partially enlarged perspective view of the film peeling unit region shown in FIG. 2, and FIG. 4 is a schematic plan view of FIG. 3. 5 and 6 are diagrams showing the operation of FIG. 2 step by step, respectively.

As shown in these drawings, the polarizing plate attaching device according to the present embodiment includes two first and second film peeling units 110a and 110b disposed in diagonal directions at both corners of the front end portion of the protective film 2. And an up / down actuator 120 coupled to the first and second film peeling units 110a and 110b, respectively, to drive the film peeling unit up / down with respect to the protective film 2, and The oblique movement actuator 130 which is coupled to the first and second film peeling units 110a and 110b and moves the film peeling unit in a diagonal direction for peeling off the protective film 2, and the first and second film peeling units. The device body 140 in a linear direction for secondary peeling on the device body 140 integrally supporting the 110a and 110b and the protective film 2 peeled off primarily by the oblique moving actuator 130. The linear movement actuator 150 which moves is provided.

For reference, in the following description, for the sake of convenience of description, reference numerals may be distinguished only for the first and second film peeling units 110a and 110b, and the same as the first and second film peeling units 110a and 110b, respectively. The same reference numerals are used for all the components provided.

The first and second film peeling units 110a and 110b serve to peel off portions of both edge regions of the protective film 2 substantially as shown in FIG. 1A. Of course, this requires the help of the up / down actuator 120 and the oblique movement actuator 130, which will be described later.

Mainly referring to Figure 3, the first and second film peeling unit (110a, 110b), the pressure roller 112 as a pressure member that is pressure-adhesive to the unit body 111 and both corner regions of the protective film (2) And a pair of roller support portions 113 extending from one surface of the unit body 111 and spaced apart from each other to rotatably support the pressure roller 112.

Of course, a tool in the form of a knife (knife) for pressure may be applied to the pressure member instead of the pressure roller 112, but in this embodiment, the pressure roller 112 that is rotatable between the pair of roller support portions 113 is the pressure member. Is applied. As such, when one pressure roller 112 is used, an adhesive tape (not shown) is coated on the outer surface of the pressure roller 112 to which an adhesive material having a predetermined viscosity is applied so as to be repeatedly used at least several times or several tens of times. At this time, the adhesive tape is wound at least twice on the outer surface of the pressure roller 112. In some cases, the adhesive tape may be wound once on the outer surface of the pressure roller 112, but in the case of one winding, since the adhesive tape is likely to be separated from the pressure roller 112, the adhesive tape is wound at least twice. It may be advantageous to.

In order for the maintenance of the apparatus to be more convenient, the first and second film peeling units 110a and 110b may be easily detached from the apparatus main body 140. To this end, locking the first and second film peeling units 110a and 110b and the device body 140 to lock and unlock the first and second film peeling units 110a and 110b with respect to the device body 140. Means 114 are further provided.

The locking means 114 is provided with protrusions P (see FIGS. 7 and 8) provided to protrude into the unit body 111 of the first and second film peeling units 110a and 110b, and toward the protrusions P. As shown in FIG. It includes a rocker (114a) is provided in the device body 140 to be movable to be locked and unlocked to the projection. Accordingly, the first and second film peeling units 110a and 110b are disposed on the apparatus body 140 in the state of opening and closing the rocker 114a, and the rocker 114a is pushed downward to catch the protrusion P. By doing so, the first and second film peeling units 110a and 110b may be easily and simply coupled to the apparatus body 140.

Usually, the first and second film peeling units 110a and 110b are disposed on the protective film 2 when the protective film 2 is peeled off. Therefore, the pressure rollers 112 of the first and second film peeling units 110a and 110b may be peeled off by adhering portions of both edge regions of the protective film 2 as shown in FIG. To do so, it is necessary to approach (fall) and space (rise) the first and second film peeling units 110a and 110b with respect to the protective film 2, and the up / down actuator 120 plays this role. . As the up / down actuator 120, a pneumatic cylinder, a hydraulic cylinder, a pneumatic cylinder, or the like may be applied. Thus, when the first and second film peeling units 110a and 110b are lowered by the up / down actuator 120, the pressure roller 112 is adhered to the surface of both corner regions of the protective film 2, and then the first And when the second film peeling unit (110a, 110b) is raised is to be able to peel off a part of both corners of the protective film 2, as shown in Figure 1 (a) along the pressure roller 112.

The diagonal movement actuator 130 pulls both edge regions of the protective film 2 peeled off by adhering to the pressure rollers 112 of the first and second film peeling units 110a and 110b in the diagonal direction, and thus the first and second 2 The protective film 2 is first peeled together with the film peeling units 110a and 110b. The oblique movement actuator 130 may be applied to a pneumatic cylinder, a hydraulic cylinder, a pneumatic cylinder, or the like as the up / down actuator 120, or may be applied as a linear motor.

The first peeling is performed by pulling the two corner regions of the protective film 2, which are adhered to the pressure rollers 112 of the first and second film peeling units 110a and 110b and peeled by the diagonal movement actuator 130, in a diagonal direction. Proceeds. However, if the protective film 2 is separated from the pressure roller 112 in this process, a process error is caused. However, when the pressure roller 112 is to adhere the protective film (2) by the excessive adhesive force, in addition to the protective film (2) may also occur a closed end comes with the polarizing plate (1).

Thus, in this embodiment, the pressure rollers 112 of the first and second film peeling units 110a and 110b allow a part of both edge regions of the protective film 2 to be removed as shown in FIG. After sticking and peeling off, the peeled part is clamped separately. That is, after clamping the peeled portion, the first peeling of the protective film 2 by the oblique movement actuator 130 is allowed to proceed. To this end, the clamping unit 160 is further provided.

The clamping unit 160 is coupled to the apparatus main body 140 so as to be disposed outside the first and second film peeling units 110a and 110b, and both corner regions of the protective film 2 peeled off by the pressure roller 112. It serves to clamp (see (a) of FIG. 1).

The clamping unit 160 is coupled to the clamping actuator 161 and the clamping actuator 161 and the gripper 162 for clamping both corner regions of the protective film 2 adhered to the pressure roller 112. , Gripper). At this time, the gripper 162 clamps the protective film 2 by rotating in one direction on the side of the pressure roller 112 and then moving backward. Accordingly, the gripper 162 is preferably coupled to one end of the clamping actuator 161 so as to rotate and retract.

When looking at the position of the clamping unit 160, the clamping unit 160 may be provided on any one side of the first and second film peeling unit (110a, 110b). That is, the clamping unit 160 may be provided at any position as long as the sides of the first and second film peeling units 110a and 110b are provided. However, when the clamping unit 160 is provided inside the first and second film peeling units 110a and 110b, the first and second film peeling units 110a and 110b are operated by the operation of the unit driving unit 170 to be described later. ) May cause mutual interference when they are approached. Thus, as shown, the clamping unit 160 may be advantageously provided to the outside of the first and second film peeling units (110a, 110b) to clamp the protective film (2) from the outer direction to the inner direction.

On the other hand, the primary peeling operation of the protective film 1 by the oblique movement actuator 130 is carried out after a portion of both edges of the protective film 2 is clamped by the clamping unit 160. Therefore, a means for detecting whether the protective film 2 is clamped is required, which is in charge of the detection unit 164. In other words, the sensing unit 164 is coupled to the clamping unit 160 serves to detect whether the protective film 2 is clamped.

The sensing unit 164 may be sufficiently implemented in the form of a simple sensor. However, in this embodiment, in order to more effectively detect whether the protective film 2 is clamped, the mirror 164a coupled to the gripper 162 and the clamping actuator 161 are coupled to each other through the mirror 164a. The sensing unit 164 is implemented as an optical sensor 164b that detects whether the protective film 2 is clamped by reflecting the irradiated light.

As described above, a part of both edges of the protective film 2 is clamped by the clamping unit 160, and after the sensing unit 164 detects this, as shown in FIG. 5, the oblique movement actuator 130 is operated. Thus, the primary peeling on the protective film 2 proceeds while pulling both edge regions of the protective film 2 in an oblique direction. At this time, the first and second film peeling units 110a and 110b disposed at both corner regions of the protective film 2 are diagonally disposed at an angle of about 45 degrees, and then the oblique movement actuator 130 is first and second to one another. 2 When the film peeling units 110a and 110b are pulled in the diagonal direction at an angle of 45 degrees, the primary peeling effect of the protective film 2 is excellent. Of course, it is not necessary to set the angle of 45 degrees, but the experimental results have been reported to be excellent in the primary peeling effect of the protective film 2 when pulled at an angle of approximately 45 degrees.

Therefore, the polarizing plate attachment device is further provided with a peeling unit pivot 166 for adjusting the peeling angles of the first and second film peeling units 110a and 110b with respect to the protective film 2. As shown in FIG. 2, the peeling unit pivot 166 is coupled to the apparatus main body 140 to rotate the first and second film peeling units 110a and 110b at a desired angle. In this case, the peeling angle may have a range of 5 degrees to 80 degrees based on the linear direction of the linear movement actuator 150. That is, by the peeling unit rotating unit 166, the first and second film peeling units 110a and 110b can be rotated within a range of about 5 degrees to 80 degrees. As the peeling unit rotating unit 166, a motor to which a speed reducer is added may be applied.

The device body 140 is a part supporting most of the above-described components, including the first and second film peeling units 110a and 110b. Only a part is schematically shown in the drawings. In addition, the linear actuator 150 serves to move the device body 140 in a linear direction for the secondary peeling of the protective film 2 first peeled off by the oblique movable actuator 130. That is, the linear movement actuator 150 serves to completely separate the protective film 2 from the polarizing plate 1 by pulling the protective film 2 in which the primary peeling is completed in the linear direction as shown in FIG. do.

On the other hand, as will be described repeatedly, the polarizing plate attachment device of the present embodiment is provided with two first and second film peeling units (110a, 110b), the first and second film peeling units (110a, 110b) is a protective film (2) are disposed in both corner areas. Therefore, when adjusting the distance between the first and second film peeling unit (110a, 110b), the protective film of the size from the polarizing plate (not shown) to be attached to the LCD panel (substrate) of various sizes (size) Can be peeled off. For this purpose, the unit driving unit 170 is provided.

The unit driving unit 170 is coupled to at least one of the first and second film peeling units 110a and 110b to access and space the first and second film peeling units 110a and 110b from each other. The unit driving unit 170, the first and second film peeling unit (110a, 110b) and the edge alignment unit driving unit 170 for approaching and separating the other movable to any one fixed, and the first, And the second film peeling unit (110a, 110b) can be divided into a central alignment unit driving unit (not shown) to approach and away from each other toward each other, any unit driving unit may be applied. In the present embodiment, the former unit for driving the edge alignment method 170 is applied.

Edge alignment unit driving unit 170 is coupled to the drive motor 171, the rotation axis of the drive motor 171 is coupled to the ball screw shaft 172 and the ball screw shaft 172 that can rotate in the forward and reverse directions A shaft moving piece 173 is movable along the longitudinal direction of the ball screw shaft 172 and coupled to the second film peeling unit 110b that is movable in at least one region.

Accordingly, when the driving motor 171 operates to rotate the ball screw shaft 172 in the forward and reverse directions, the shaft moving piece 173 coupled to the ball screw shaft 172 is along the longitudinal direction of the ball screw shaft 172. Move. While moving the second film peeling unit 110b, the second film peeling unit 110b may be approached and spaced apart from the first film peeling unit 110a. Therefore, due to the operation there is an advantage that can be peeled off the protective film (not shown) of the size from the polarizing plate (not shown) of various sizes (size). In particular, as shown in the present embodiment, when the unit driving unit 170 is provided, the protective film 2 can be peeled off while using the minimum number of press rollers 112 to efficiently correspond to all sizes of the substrate. It becomes possible.

The operation of the polarizing plate attachment device having such a configuration will be described.

First, the distance between the first and second film peeling units 110a and 110b is adjusted to match the size of the protective film 2 to be peeled off. That is, the first and second film peeling units 110a and 110b may be approached and spaced apart from the fixed first film peeling unit 110a through the operation of the unit driving unit 170. To control the distance between them. When the adjustment is completed, the first and second film peeling units (110a, 110b) are diagonally disposed in one side edge area of the protective film (2).

When the preparation is completed and the peeling operation for the protective film 2 is started, the up / down actuator 120 is operated by the control signal. When the first and second film peeling units 110a and 110b are lowered by the down operation of the up / down actuator 120, the pressure roller 112 adheres to the surface of both corner regions of the protective film 2. When the first and second film peeling units 110a and 110b are raised by the up / down actuator 120 again, the protective film is formed along the pressure roller 112 as shown in FIG. Part of both corner regions of (2) is peeled off.

Next, the clamping unit 160 is operated. That is, by the clamping actuator 161, the gripper 162 is rotated in one direction on the side of the pressure roller 112, and then retracted back to clamp some regions peeled off from both corner regions of the protective film 2, Subsequently, the sensing unit 164 detects whether the protective film 2 is clamped. If it is detected that the protective film 2 is not clamped, the above-described operation is performed again.

A part of both edges of the protective film 2 is clamped by the clamping unit 160, and after the sensing unit 164 detects this, as shown in FIG. 5, the oblique movement actuator 130 is operated and protected. Primary peeling with respect to the protective film 2 advances, pulling the edge area | region of the film 2 diagonally. In this case, as described above, the oblique movement actuator 130 pulls both edge regions of the protective film 2 in the diagonal direction at an angle of about 45 degrees, thereby increasing the primary peeling effect of the protective film 2.

After the first peeling of the protective film 2 is completed, the linear actuator 150 is operated. That is, the protective film 2 can be completely peeled off from the polarizing plate 1 by pulling the protective film 2 in which the primary peeling is completed by the linear movement actuator 150 in the linear direction as shown in FIG. Will be.

As described above, according to the present embodiment, the protective film can be peeled off in a simple and effective manner through a simple structure, thereby reducing the maintenance time and work time of the apparatus and lowering the probability of occurrence of a process error. In addition, the polarizing plate 1 can be prevented from being damaged.

Meanwhile, in the above-described embodiment, both the first and second film peeling units 110a and 110b have only one pressing roller 112. However, the film peeling units 210 and 310 may be employed in the same structure as the second and third embodiments below. This is explained in detail.

7 is a perspective view of a film peeling unit of a polarizing plate attachment apparatus according to a second embodiment of the present invention.

Referring to this figure, the film peeling unit 210 according to the second embodiment of the present invention, the unit body 231 and a pair of rollers which are extended from one surface of the unit body 231 and spaced apart from each other Pressing roller 232 as a pressing member for pressing the supporting portion 233 and the adhesive tape 236 for peeling the protective film 2 from the polarizing plate 1 to the protective film 2, and the pressing roller 232. And a first winding roller 234 and a second winding roller 235 which are spaced apart from each other.

The pressure roller 232 is disposed forward with respect to the first winding roller 234 and the second winding roller 235, and the front end portion 233a of the roller supporting portion 233 between the pair of roller supporting portions 233. Rotatably coupled to. At this time, the diameter of the pressure roller 232 is smaller than the diameter of each of the two winding rollers (234,235).

The first winding roller 234 and the second winding roller 235 are rotatably coupled to the roller supporting portion 233 between the pair of roller supporting portions 233. At this time, the first winding roller 234 is disposed above the pressing roller 232, the second winding roller 235 is disposed below the first winding roller 234. That is, the press roller 232, the 1st winding roller 234, and the 2nd winding roller 235 are arrange | positioned with each other in triangular sphere.

The adhesive tape 236 is wound to form a closed loop on the pressure roller 232, the first winding roller 234, and the second winding roller 235, which are also arranged with mutual triangles as described above. At this time, since the pressure roller 232 is disposed forward with respect to the two winding rollers 234 and 235, the adhesive tape 236 is in an acute angle around the pressure roller 232. Here, the term "acute angle" refers to an angle that is mathematically smaller than a right angle, and in this embodiment, the adhesive tape 236 is in the range of 5 degrees to 45 degrees around the pressure roller 232. It is preferable to be wound up to have an acute angle.

In the film peeling unit 210 according to the present embodiment, the pressure roller 232 and the two winding rollers 234 and 235 are arranged in a triangular sphere, so that the diameter of the pressure roller 232 in contact with the protective film 2 is conventional. While reducing than the film peeling unit (not shown), it is possible to increase the length of the adhesive tape 236 to be wound.

As a result, the reduction of the diameter of the pressure roller 232 in contact with the protective film 2 may be caused by lifting of the polarizing plate 1 in the initial peeling process of the protective film 2 attached to the polarizing plate 1. 2) the process error (Error) is not normally peeled off, and the increase in the length of the adhesive tape 236 wound up increases the life of the film peeling unit 210 to tact due to the replacement operation of the film peeling unit 210 Decreases the Tact Time.

On the other hand, when the diameter of the pressure roller 232 is designed to be very small, since the diameter of the bearing for supporting the rotation of the pressure roller 232 must also be used, it is difficult to manufacture and install.

In order to solve this difficulty, the film peeling unit 210 according to the present embodiment implements the pressure roller 232 as a plurality of resin bearings (232a).

That is, the pressing roller 232 according to the present embodiment, as shown, the support shaft 232b coupled to the front end 233a of the roller support 233 between the pair of roller support 233, It is provided along the direction of the support shaft 232b and has a plurality of resin bearings 232a rotatably coupled to the support shaft 232b. Ball type bearings are applied to the resin bearings 232a, but other types of bearings may be applied. By implementing the pressure roller 32 as a plurality of very small resin bearings 232a as described above, the diameter of the pressure roller 232 can be designed to be smaller, and as a result, the pressure roller 32 generated in the initial peeling process of the protective film 2 can be formed. Process errors can be further reduced.

In addition, the film peeling unit 210 according to the present embodiment, the pressure roller 232 in the front and the two winding in the rear so that the adhesive tape 236 is wound in an acute angle around the pressure roller 232. By disposing the rollers 234 and 235, the initial peeling angle can be minimized.

8 is a perspective view of a film peeling unit of a polarizing plate attachment apparatus according to a third embodiment of the present invention.

Referring to this figure, the film peeling unit 310 according to the third embodiment of the present invention is a pressing member 338 is provided with an edge (338a, edge) at the tip instead of the pressing roller 232 shown in FIG. ).

The adhesive tape 336 is wound in a closed loop on the pressing member 338, the first winding roller 334, and the second winding roller 335 in an acute angle around the pressing member 338. do.

The pressing member 338 is disposed forward with respect to the two winding rollers 334 and 335, and is coupled to the roller supporting portion 333 between the pair of roller supporting portions 333. The lower surface of the pressing member 338 is horizontal with respect to the polarizing plate 1, and the upper surface of the pressing member 338 becomes inclined as the height becomes lower toward the tip relative to the center portion.

At the tip (front end) of the pressing member 338, an edge 338a is provided to press the adhesive tape 336 to stick to the protective film 2 when the protective film 2 is peeled from the polarizing plate 1. Edge 338 is a sharp portion such as a knife (knife), the portion in contact with the protective film 2 is smaller than the pressure roller 332 of the above-described embodiment.

The film peeling unit 310 according to the present exemplary embodiment may include a pressing member 338 having a very small portion in contact with the protective film 2, thereby reducing a process error due to the lifting phenomenon of the polarizing plate 1.

9 is a schematic configuration diagram of a polarizer attachment apparatus according to a fourth embodiment of the present invention.

As shown in this figure, the polarizing plate attachment device according to the fourth embodiment of the present invention, a pair of Y-axis gantry arranged in parallel with each other in both outer regions of the protective film 2 to be peeled from the polarizing plate 1 401 and an X-axis gantry coupled to the pair of Y-axis gantry 401 to cross the pair of Y-axis gantry 401 and movable along the longitudinal direction of the pair of Y-axis gantry 401. 402 and a pressing member (not shown) which is pressure-adhered to any corner region of the protective film 2, and are movably coupled along the longitudinal direction of the X-axis gantry 402 in the X-axis gantry 402. The film peeling unit 410 and the pair of Y-axis gantry 401, X-axis gantry 402 and the film peeling unit 410 are moved so that the protective film 2 can be peeled off from the polarizing plate 1. Control unit (not shown) for controlling.

Referring to FIG. 9, although the film peeling unit 410 is schematically illustrated in a substantially rectangular box shape, the film peeling unit 410 illustrated in FIG. 9 is the film peeling unit 110 to the above-described embodiments. 310 may be any one selected from. In addition, the up / down actuators 120 (refer to FIG. 2) described in the first embodiment are also considered to operate in conjunction with the film peeling unit 410 of FIG. 9.

The operation of the polarizer attachment device of FIG. 9 having such a configuration will be briefly described as follows. Peeling of the protective film 2 may be made in about four steps, as shown in FIG.

First, when the peeling operation is started, in a state where a pair of Y-axis gantry 401, X-axis gantry 402 and film peeling unit 410 is arranged at the origin of the peeling operation which is the initial position (step 1), The control unit moves the X-axis gantry 402 with respect to the pair of Y-axis gantry 401, and then moves the film peeling unit 410 on the X-axis gantry 402 to the film peeling unit 410 is a protective film ( It should be placed in any corner area of 2). Thereafter, although not shown in detail, any one corner area of the protective film 2 is pressed against the pressure roller of the film peeling unit 410 by the operation of the up / down actuator 120 (see FIG. 2) described in the first embodiment. A part of is adhered (step 2).

When a part of one corner region of the protective film 2 is adhered to the pressure roller of the film peeling unit 410, the control unit moves the X-axis gantry 402 to approximately the center region of the pair of Y-axis gantry 401. (Step 3). When the three-stage operation is performed, the protective film 2 is first peeled in the diagonal direction with respect to the polarizing plate 1.

Next, when the primary peeling is completed, the control unit completely moves the X-axis gantry 402 with respect to the pair of Y-axis gantry 401, or fixes the X-axis gantry 402 and vice versa. By moving the gantry 401 to secondary peeling of the protective film 2 with respect to the polarizing plate 1 in a linear direction (step 4), the peeling operation of the protective film 2 can be finished.

When the peeling operation of the protective film 2 is carried out in a simple and effective manner through such a simple structure, the maintenance time and work time of the device can be shortened, and the probability of occurrence of a process error can be lowered. It is enough to achieve the effect which can prevent (1) from being damaged.

In particular, in the present embodiment, there is an advantage that the protective film 2 can be effectively peeled off with only one film peeling unit 410.

In the above embodiments, a description of the structure supporting the polarizing plate is omitted, but the structure supporting the polarizing plate may be a flat plate or a cylindrical drum.

In the above embodiments, the configuration and the operation thereof for peeling the protective film mainly from the polarizing plate to be attached to the LCD panel have been described, but the scope of the present invention is not limited thereto. That is, in order to control the performance of the backlight unit or to transmit and polarize light under optimum conditions, among liquid crystal display (LCD), plasma display panel (PDP), and organic light emitting diodes (OLED). Various types of optical films (or sheets) that can be applied to at least one flat panel display selected, such as EMI films, prism films, protective films, diffuser films, reflective films, DBEF, PVA, TAC, release films, compensation films When the protective film is attached to the antireflection film or the like to protect the film, the present invention may be sufficiently applied.

As described above, the present invention is not limited to the described embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention, which will be apparent to those skilled in the art. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

As described above, according to the present invention, the protective film can be peeled off in a simple and effective manner through a simple structure, thereby reducing the maintenance time and working time of the apparatus and reducing the probability of occurrence of process errors. It can lower and also can prevent a polarizing plate from being damaged.

Claims (17)

A pair of film peeling units having a pressing member that is pressure-adhered to both sides of the front edge of the protective film so as to peel the protective film from the polarizing plate, and disposed in an oblique direction at both sides of the edge; An up / down actuator coupled to the film peeling unit and driving up / down of the film peeling unit with respect to the protective film; And And a diagonal movement actuator coupled to the film peeling unit to move the film peeling unit in the diagonal direction with respect to the front edge of the protective film for peeling of the protective film. delete The method of claim 1, An apparatus body for supporting the pair of film peeling units; And And a linear movement actuator for moving the apparatus main body in a linear direction for the secondary peeling of the protective film primarily peeled by the oblique movement actuator. The method of claim 3, It is coupled to the device body, characterized in that it further comprises a peeling unit rotating unit for rotating the pair of film peeling unit a predetermined angle for adjusting the peeling angle of the pair of film peeling unit with respect to the protective film. Polarizer Attachment Device. The method of claim 4, wherein And said peeling angle has a range of 5 degrees to 80 degrees with respect to the linear direction of said linear movement actuator. The method of claim 1, The pressing member is a pressing roller, The film peeling unit, Unit body; And And a pair of roller support portions extending from one surface of the unit body and spaced apart from each other to rotatably support the pressure roller. The method of claim 1, The pressing member is a pressing roller, The film peeling unit, At least one winding roller spaced apart from the pressure roller; And Further comprising a pressure-sensitive adhesive tape wound around the pressure roller and the at least one winding roller and coated with an adhesive material having a predetermined viscosity to be used repeatedly at least several times on an outer surface thereof. The adhesive tape is a polarizing plate attachment device, characterized in that wound in a state that forms an acute angle around the pressing roller in a closed loop (Closed Loop) to the pressing roller and the take-up roller. The method of claim 1, And a clamping unit positioned on one side of the pair of film peeling units, respectively, for clamping corner regions of the protective film peeled off by the pressing member. The method of claim 8, The clamping unit, Actuator for clamping; And And a gripper (Gripper) coupled to the clamping actuator so as to be rotatable and retracted to clamp an edge region of the protective film adhered to the pressing member. The method of claim 8, The clamping unit is a polarizing plate attachment device, characterized in that provided on the outside of the pair of film peeling unit to clamp the edge area of the protective film on the outside of the protective film. The method of claim 9, And a detecting unit coupled to the clamping unit to detect whether the protective film is clamped. The method of claim 11, The detection unit, A mirror coupled to the gripper; And And an optical sensor coupled to the clamping actuator and configured to detect whether the protective film is clamped by reflecting light reflected through the mirror. The method of claim 1, And a unit driving unit connected to at least one of the pair of film peeling units to access and space the pair of film peeling units from each other. The method of claim 13, The unit driving unit, an edge alignment unit driving unit for approaching and spaced apart from the other movable one of the pair of the film peeling unit, and the pair of film peeling unit approaching and opposing each other Polarizing plate attachment device, characterized in that any one selected from the unit driving unit for central alignment. The method of claim 14, The unit driver is a unit driver for the edge alignment method, The unit driving unit for the edge alignment method, Drive motor; A ball screw shaft coupled to a rotation shaft of the drive motor and rotatable in a forward and reverse direction; And And a shaft moving piece coupled to the ball screw shaft and movable along the length direction of the ball screw shaft, the shaft moving piece being connected to the other film peeling unit that is movable in at least one region. A pair of Y-axis gantry disposed side by side in both outer regions of the protective film to be peeled off from the polarizing plate; An X-axis gantry coupled to the pair of Y-axis gantry to traverse the pair of Y-axis gantry and movable along a length direction of the pair of Y-axis gantry; A film peeling unit having a pressing member that is pressure-adhered in any one corner region of the protective film, the film peeling unit being movably coupled along the length direction of the X-axis gantry in the X-axis gantry; And The pair of Y-axis gantry, the X-axis gantry and the film peeling unit of the film peeling unit to move the film peeling unit in an oblique direction with respect to the front edge of the protective film so that the protective film is peeled off from the polarizing plate A control unit for controlling movement; The control unit, In the state where the pair of Y-axis gantry, the X-axis gantry and the film peeling unit are disposed at the origin of the peeling operation, the film peeling unit is the protective film by controlling the movement of the X-axis gantry and the film peeling unit. The adhesive film is pressed to any corner of the edge, and then one of the pair of Y-axis gantry and the X-axis gantry is moved relative to the other so that the protective film has a first peeling in a diagonal direction and a linear direction. Polarizer attachment device characterized in that the secondary peeling according to the control to proceed continuously. delete

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