TWI647111B - Peeling device and peeling method - Google Patents

Abstract

The peeling device of the present invention includes: a platform member on which the laminated body can be placed; and a peeling member that can hold one end of the polarizing plate peeled from the laminated body and further peel the polarizing plate in sequence by rotation; In addition, the peeling device is structured so that at least one of the laminated body and the peeling member faces two ends of a boundary portion between the polarizing plate that has been peeled from the laminated body and the polarizing plate that has not been peeled off. Rotate in the direction of the tension difference.

Description

Peeling device and method Field of invention

The present invention relates to a peeling device and a peeling method for peeling a polarizing plate from a laminated body.

Background of the invention

Conventionally, a panel suitable for an image display portion of an image display device is known, such as a liquid crystal display panel or an organic EL display panel. For these panels, a laminated body having a substrate formed of a hard glass plate or the like and a polarizing plate (polarizing film) attached to one side of the substrate or both sides of the front and back via an adhesive is used.

Such a liquid crystal display panel or the like is manufactured by attaching a polarizing plate on a substrate, and is inspected after manufacturing. During this inspection, it may be found that the following polarizing plate is damaged or damaged, or air, foreign matter, or the like is mixed between the polarizing plate and the substrate. In this case, the polarizing plate is peeled off from the liquid crystal display panel and the like, and the obtained substrate is reused for the manufacture of other liquid crystal display panels and the like. This kind of peeling of the polarizing plate is generally called "heavy industry".

Therefore, some proposals have been made to peel off the polarizing plate from such a laminated body. Used peeling device. For example, there is a proposed peeling device, which holds the laminated body belonging to the electro-optic panel in a vertically vibrating manner, and places it on the platform in a state capable of vibrating in the horizontal direction, and peels the laminated body from the substrate. One end of the polarizing plate is wound around, for example, a take-up roller, and while the platform is moved in the peeling direction, the peeled polarizing plate is wound by the take-up roller to peel the polarizing plate. According to the peeling device, while pressing the pressing roller to press the liquid crystal display panel against one side of the polarizing plate, the peeling polarizing plate is bent along the peripheral surface of the pressing roller, and the rotating winding roller is used to bend the polarizing plate. The polarizing plates are sequentially wound. With this winding, the polarizing plate can be further peeled off by a pressing roller, and the peeled polarizing plate can be sequentially rolled up.

According to this, the peeling device provided with the pressing roller described above is provided, and the winding force of the winding member is converted into a force for peeling off the polarizing plate via the pressing roller. In addition, since the polarizing plate is peeled while applying vibration, peeling tends to be easy.

[Advanced technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2009-29561

Summary of invention

However, as is generally known, a polarizing plate attached to a substrate in a liquid crystal display panel is not intended to be peeled off originally. That is, compared with the case where a film is adhered to another member on the premise that it can be peeled off, the polarizing plate is adhered to the substrate with a much stronger adhesive force than that described above.

Therefore, when the polarizing plate is peeled by using the peeling device, the polarizing plate is peeled against the strong adhesive force, and thus the polarizing plate may be broken at at least one end of the peeled portion of the polarizing plate due to the strong adhesive force. If the polarizing plate is broken, it is necessary to separate the remaining polarizing plate separately, so it is difficult to peel off the entire polarizing plate for this purpose.

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a peeling device and a peeling method that can peel a polarizing plate from a substrate while suppressing cracking of the polarizing plate.

The present inventors made intensive investigations into the reasons why the polarizing plate was broken in the peeling device of the reference 1. It was found that when the polarizing plate was peeled from the laminated body by the peeling device, the polarizing plate that had been peeled from the laminated body and Tensile differences occur between the two ends of the stripped polarizer's boundary portion (start of peeling), and the end with the higher tension tends to crack the polarizer. Based on this finding, we further studied and found that by rotating at least one of the laminated body and the peeling device in a direction to eliminate the tension difference described above, cracking of the polarizing plate can be suppressed, and the present invention was completed.

That is, the peeling device of the present invention is a device for peeling the polarizing plate from a laminated body having a substrate and a polarizing plate adhered to the substrate, and includes a platform member capable of placing the laminated body; and The peeling member holds one end of the polarizing plate that is being peeled from the laminated body, and further peels the polarizing plate in order. The peeling device is configured to enable the laminated body and the peeling structure. At least one of the components is rotated in a direction that eliminates a tension difference between the two ends of the boundary portion of the polarizing plate that has been peeled from the laminated body and the polarizing plate that has not been peeled.

Furthermore, in the above-mentioned constituent peeling device, it is preferable that at least one of the laminated body and the peeling member matches the tension difference between the two ends of the boundary portion and rotates in a direction to eliminate the tension difference, so that the tension difference is made. Converted into a rotational force of at least one of the foregoing.

Furthermore, in the peeling device having the above configuration, it is preferable that the laminated body and the peeling member be configured to rotate the laminated body on a virtual plane parallel to the laminated body in a direction to eliminate the tension difference.

Furthermore, in the peeling device having the above configuration, it is preferable that the laminated body can be fixed to the platform member, so that the laminated body can rotate with the platform member in a direction to eliminate the tension difference.

Furthermore, it is preferable that the peeling device having the above-mentioned configuration further includes a plate-shaped peeling auxiliary member, which can be used for hanging the polarizing plate being peeled, and guiding the polarizing plate to the peeling member; and the peeling auxiliary member; It has a bottom surface portion disposed along one surface of the laminated body on the side of the polarizing plate, and a front end portion that guides the polarizing plate in the peeling direction to the peeling member in a curved manner.

Moreover, in the peeling device of the said structure, It is preferable that the peeling auxiliary member further has an inclined portion that is inclined from the front end portion toward the base end side and away from the bottom surface portion.

Furthermore, in the peeling device of the above configuration, the peeling member is preferably a winding member, which can be used to hang one end of the polarizing plate that is being peeled from the laminated body, and then rotate the polarizing plate one by one by using rotation. Peeler and coiler on one side.

Furthermore, the peeling method of the present invention includes the following steps: a mounting step of mounting a laminated body having a substrate and a polarizing plate attached to the substrate on a platform member; and a holding step of peeling the polarized light One end portion of the plate and holding the one end portion by a peeling member; and a peeling step of removing at least one of the laminated body and the peeling member toward removing the polarizing plate that has been peeled from the laminated body, and removing the polarizing plate that has not been peeled off; The direction of the tension difference between the two ends of the boundary portion of the polarizing plate is rotated, and the polarizing plate is further peeled in sequence by the peeling member, so as to peel the polarizing plate from the laminated body.

Furthermore, in the peeling method of the above configuration, the peeling step is preferably performed in such a manner that at least one of the laminated body and the peeling member rotates in a direction that eliminates the tension difference in accordance with a tension difference between the two ends of the boundary portion. The tension difference is converted into a rotational force of at least one of the foregoing.

Moreover, in the peeling method of the said structure, the said peeling process is suitable for the said laminated body and the said peeling member, and the said laminated body is made to eliminate the said on a virtual plane parallel to the said laminated body. Rotate in the direction of the tension difference.

In addition, the peeling method of the above configuration is preferably as follows: the placing step is to fix the laminated body to the platform member; the peeling step is to the laminated body and the peeling member, so that the laminated body is directed to eliminate the tension difference; When rotating in the direction of, the laminated body is rotated together with the platform member.

Furthermore, in the peeling method with the above configuration, the peeling step preferably uses a peeling auxiliary member including a bottom surface portion and a front end portion, and the polarizing plate being peeled is guided to the peeling member along the front end portion in a curved manner while using The peeling member further peels the polarizing plate in order to peel the polarizing plate from the laminated body; the bottom surface portion is arranged along the laminated body on one side of the polarizing plate side, and the front end portion is provided for peeling. The aforementioned polarizing plate is curved along a curved surface.

Furthermore, in the peeling method with the above configuration, the peeling assisting member preferably further includes an inclined portion which is inclined from the front end portion toward the base end side and away from the bottom surface portion; The guided polarizing plate further guides the peeling member along the inclined portion.

Moreover, in the peeling method of the said structure, it is suitable to use a winding member as the said peeling member; and in the said holding | maintenance step, peeling off one end part of the said polarizing plate and winding it In the aforementioned winding member, in the aforementioned peeling step, the polarizing plate is further peeled and wound in order while the aforementioned polarizing plate is peeled off by the winding member, thereby peeling the polarizing plate from the laminated body.

1‧‧‧ peeling device

3‧‧‧ platform components

5‧‧‧ peeling member

5‧‧‧ take-up component

5a‧‧‧ support

5b‧‧‧holding department

7‧‧‧ Stripping auxiliary components

7a‧‧‧bottom face

7b‧‧‧ front end

7ba‧‧‧curved surface (front edge)

7c‧‧‧inclined

9‧‧‧ the first supporting member

11‧‧‧ 2nd support member

17‧‧‧Drive

30‧‧‧Laminated body

31‧‧‧ substrate

31a‧‧‧ one side

33‧‧‧Polarizer

33a‧‧‧on one side of the polarizer

33b‧‧‧One end

35‧‧‧Adhesive layer

40‧‧‧Supporting member

41‧‧‧polarizing element

43‧‧‧ Adhesive layer

43‧‧‧Rotating member

45‧‧‧ protective film

A‧‧‧parallel imaginary plane

F (F1, F2) ‧‧‧Tension

R‧‧‧rotation shaft

S‧‧‧ border section

T‧‧‧ parallel plane

X‧‧‧ peeling direction

Fig. 1 is a schematic side view showing a peeling device according to a first embodiment of the present invention.

FIG. 2 is a schematic plan view showing a peeling device according to this embodiment.

FIG. 3 is a schematic plan view showing a platform member provided in the peeling device of this embodiment in a rotatable state.

FIG. 4 is a schematic plan view showing an example of a state where tension is applied to the polarizing plate.

FIG. 5 is a schematic plan view showing an example of a state where the tension applied to the polarizing plate is eliminated.

FIG. 6 is a schematic plan view showing another example of a state where tension is applied to the polarizing plate.

FIG. 7 is a schematic plan view showing another example of a state where the tension applied to the polarizing plate is eliminated.

FIG. 8 is a schematic side view showing a state where one end of the peeled polarizing plate is wound around a winding member.

FIG. 9 is a schematic side view showing a state in which the polarizing plate is further peeled by the rotation of the winding member and the peeled polarizing plate is sequentially wound.

FIG. 10 is a schematic side view showing a state where all the polarizing plates are peeled off by the rotation of the winding member.

FIG. 11 shows the application of the peeling device and the peeling method of this embodiment. An example of the layer structure of a laminated body is a schematic side view.

12 is a schematic side view showing an example of a layer structure of a polarizing plate in the laminated body shown in FIG. 11.

Fig. 13 is a schematic side view showing a peeling apparatus according to a second embodiment of the present invention.

FIG. 14 is a schematic side view showing a peeling auxiliary member provided in the peeling device of the embodiment.

FIG. 15 is a schematic side view showing a state where the polarizing plate is peeled from the laminated body when the curvature radius of the front end portion of the peeling auxiliary member is large.

FIG. 16 is a schematic side view showing a state where the polarizing plate is peeled from the laminated body when the radius of curvature of the front end portion of the peeling auxiliary member is small.

Fig. 17 is a schematic side view showing a peeling apparatus according to another embodiment of the present invention.

Fig. 18 is a schematic side view showing a peeling device according to another embodiment of the present invention.

FIG. 19 is a schematic plan view showing a peeling device according to this embodiment.

FIG. 20 is a schematic side view showing a state where the polarizing plate is further peeled by the peeling member.

Forms used to implement the invention

First, a peeling device and a peeling method according to a first embodiment of the present invention will be described.

The peeling device 1 according to this embodiment includes a platform member 3 and a peeling member 5. The platform member 3 can be provided with a substrate 31 and a substrate. The laminated body 30 of the polarizing plate 33 on one side 31a (refer to FIG. 11) of the plate 31; the peeling member 5 holds one end portion 33b of the polarizing plate 33 being peeled from the laminated body, and further peels the polarizing plate 33 and peeled in order. In addition, the peeling device 1 is configured in a state where at least one of the laminated body 30 and the peeling member 5 can be rotated in a direction to eliminate the difference in tension F (F1, F2) (refer to FIGS. 4 to 7). F1, F2) are the tension F (F1, F2) between the two ends of the polarizing plate 33 that has been peeled from the laminated body 30 and the boundary portion (part that becomes the peeling start point) S of the polarizing plate 33 that has not been peeled.

Specifically, the peeling device 1 is configured to fix the laminated body 30 on the platform member 3 and in the laminated body 30 and the peeling member 5 so that the laminated body 30 and the platform member 3 can be on a parallel imaginary plane A together. , Rotate in a direction to eliminate the difference in tension F.

More specifically, the peeling device 1 is provided with a take-up member 5 as the peeling member 5, which is peeled from the laminated body 30 and is wound around one end 33b of the polarizing plate 33 bent by the peeling assisting member 7, and then The polarizing plate 33 is peeled by the rotation and is sequentially wound while being rotated.

The peeling device 1 further includes a support member 40 that rotatably supports the platform member 3 and a peeling assisting member 7.

Furthermore, the peeling device 1 further includes a device disposed between the take-up member 5 and the peeling auxiliary member 7, and pressing the laminated body 30 toward the platform member 3, and supported by being held together with the platform member 3. First support member 9. The peeling device 1 further includes a second support member 11. The second supporting member 11 is disposed opposite to the winding member 5 with the peeling auxiliary member 7 interposed therebetween (on the left side of the peeling auxiliary member 7 in FIG. 1), and the peeling polarizing plate 33 is exposed. The substrate 31 is pressed toward the platform member 3, and is held and supported together with the platform member 3.

In addition, the peeling device 1 separates the winding member 5, the peeling auxiliary member 7, the first supporting member 9, and the second supporting member 11 from the platform member 3, and is fixed to the peeling by a fixing member (not shown). Device 1 inside.

The stage member 3 is a member in which the laminated body 30 is placed until the polarizing plate 33 is completely peeled off from the laminated body 30. In this embodiment, the platform member 3 is a member capable of fixing the laminated body 30 on the platform member 3. The platform member 3 is, for example, a plate-shaped member having a through hole through which air can pass, and is configured to attach the laminated body 30 to the platform member 3 by sucking air through the through hole (air suck) ), The laminated body 30 is fixed to the platform member 3. Moreover, the aspect in which the laminated body 30 is fixed to the platform member 3 is not specifically limited. In addition, in the present invention, the platform member 3 is not limited to this embodiment in particular, as long as the laminated body 30 can be placed.

Furthermore, in the present embodiment, the laminated body 30 is configured to allow the laminated body 30 and the platform member 3 to rotate freely on a virtual plane A parallel to the laminated body 30 around the rotation axis R as a center. More specifically, the platform member 3 capable of fixing the laminated body 30 is configured to be able to rotate freely around the rotation axis R as a center. That is, as described below, the platform member 3 is configured to be relatively freely rotatable with respect to the support member 40 that supports the platform member 3 around the rotation axis R as a center.

The supporting member 40 supports the platform member 3 rotatably. The support member 40 includes a main body portion 41 constituting a main body, and a main body portion 41 disposed on the upper surface of the main body portion 41 and rotatably supported by the main body portion 41. 的 转 件 43。 The rotating member 43. In addition, by fixing the platform member 3 to the upper surface of the rotating member 43, the platform member 3 can rotate freely relative to the supporting member 40.

The support member 40 is moved in the peeling direction X, and the platform member 3 and the laminated body 30 are moved in accordance with the movement of the support member 40.

The winding member 5 as the peeling member 5 is capable of being wound around one end portion 33b of the peeled polarizing plate 33, and in this state, is rotated around a rotation axis in the longitudinal direction of the winding member 5 as a center. , The polarizer 33 is further peeled and sequentially wound.

Such a take-up member 5 is a roller or the like that can be rotated by being driven by a driving device 17 such as a motor.

In the present embodiment, the take-up member 5 is fixedly disposed in the peeling device 1 by the above-mentioned fixing member (constructed to rotate so as to eliminate the tension difference).

In addition, one end portion 33b of the peeled polarizing plate 33 is fixed to the winding member 5 by an adhesive tape (not shown) or the like.

The polarizing plate 33 shown in FIG. 2 is in a state of being peeled together with the adhesive layer 35 (see FIG. 11).

The first support member 9 is disposed between the take-up member 5 and the peeling assisting member 7, presses the laminated body 30 toward the platform member 3, and is held and supported together with the platform member 3. With the first supporting member 9, when the polarizing plate 33 is peeled off by the winding of the winding member 5, the laminated body 30 (and the exposed substrate 31) is prevented from floating from the platform member 3, so the polarizing plate 33 is suppressed. More easily peeled.

Such a first support member 9 is, for example, a rubber roller.

The second supporting member 11 is disposed on the opposite side of the take-up member 5 with the peeling auxiliary member 7 interposed therebetween, and presses the substrate 31 from which the polarizing plate 33 has been peeled and exposed toward the platform member 3, together with the platform member 3. Hold and support. With the second support member 11, when the polarizing plate 33 is peeled off by the winding of the winding member 5, the exposed substrate 31 (even the laminated body 30 together) is prevented from floating from the platform member 3. Thereby, the polarizing plate 33 is more easily peeled.

Such a second supporting member 11 may be, for example, a rubber roller.

The winding member 5, the peeling assisting member 7, the first supporting member 9, and the second supporting member 11 are fixed to a predetermined position in the peeling direction X (the longitudinal direction of the platform member 3) and the platform using the fixing member. The member 3 (upper surface) is at a predetermined position (height) in the vertical direction.

In this embodiment, the winding member 5, the peeling auxiliary member 7, the first support member 9, and the second support member 11 are fixed at predetermined positions in the peeling device 1. Therefore, the platform member 3 is made relative to the Relative movement is performed in the peeling direction X.

The peeling auxiliary member 7 is a person who can hang the peeled polarizing plate 33 and guide the polarizing plate 33 to the take-up member 5. By guiding the polarizing plate 33 accordingly, the peeling member 5 assists the peeling of the polarizing plate 33. In this embodiment, the peeling assisting member 7 is formed in a roll shape.

The material for forming the peeling auxiliary member 7 can be, for example, stainless steel, carbon tool steel, high-speed tool steel, chrome steel, chrome molybdenum steel, manganese steel, and other materials such as alloy materials and ceramic materials. The peeling assisting member 7 may be hollow or solid.

According to the peeling device 1 of this embodiment, peeling is performed from the substrate 31 In the case of the polarizing plate 33, when the tension F between the two ends of the boundary portion S breaks evenly, that is, when the tension F1 (or F2) at one end is higher than the tension F2 (or F1) at the other end, the platform member can be made 3 or the take-up member 5 is rotated in a direction to eliminate the difference in tension F described above. This can prevent the polarizing plate 33 from being broken due to the difference in the tension F.

Therefore, the polarizing plate 33 can be peeled from the substrate 31 while preventing the polarizing plate 33 from being broken.

In addition, the peeling device 1 of this embodiment is structured so that at least one of the platform member 3 and the winding member 5 cooperates with the tension F difference between the two ends of the boundary portion S to rotate in a direction to eliminate the tension F difference. , Converting the difference in tension F into a rotational force of at least one of the platform member 3 and the take-up member 5.

According to this configuration, when the tension F equilibrium between the two ends of the boundary part S collapses, that is, when the tension F1 (or F2) at one end is higher than the tension F2 (or F1) at the other end, the platform can be made The member 3 or the take-up member 5 cooperates with the tension F difference to rotate in a direction that eliminates the tension F difference, and converts the tension F difference into a rotational force. This will eliminate this difference.

Specifically, for example, as shown in FIG. 4, when the tension F1 at one end is higher than the tension F2 at the other end, at the boundary portion S, the above-mentioned end with a higher tension is applied to the laminated body 30 toward the tension from that end. The small pushing force of the other end (the force toward the upper side in FIG. 4) causes the one end to easily break. However, by converting this force into the rotation force of the platform member 3 (clockwise rotation force in FIG. 5) as shown in FIG. 5, the force occurring at the one end toward the other end can be relaxed, and thus the Eliminate the tension difference between the two ends. Also, for example, as opposed to that shown in FIG. 4, as shown in FIG. 6, when the tension F2 at the other end is relatively In the case where the tension F1 is higher than the one end, at the boundary portion S, a force (the force toward the lower side in FIG. 6) is pressed from the other end with the higher tension to push the laminated body 30 toward the end with the lower tension. ), Causing the other end to break easily. However, as shown in FIG. 7, this force is converted into a rotational force of the platform member 3 (a rotational force rotated counterclockwise as shown in FIG. 7), so that a force occurring at the other end toward the one end can be relaxed, thereby facilitating The tension difference between the two ends can be eliminated.

Accordingly, by rotating the platform member 3 together with the laminated body 30 described above, the difference in tension F between the two ends can be eliminated, and the polarizing plate 33 can be more reliably prevented from being damaged due to the difference in tension.

In addition, in this embodiment, since the platform member 3 rotates freely, if a tension F difference occurs between the two ends of the boundary portion S, the tension difference is immediately converted into a rotational force of the platform member 3.

Moreover, in the peeling device 1 of this embodiment, the laminated body 30 is fixed to the platform member 3, and the laminated body 30 and the platform member 3 are rotated in the direction which eliminates the said tension F difference.

According to this configuration, by fixing the laminated body 30 to the platform member 3 and rotating the laminated body 30 together with the platform member 3 in a direction to eliminate the difference in tension F, the laminated body 30 and the platform member 3 can be suppressed. The friction causes the laminated body 30 to stably rotate. This can more reliably suppress the occurrence of cracks in the polarizing plate 33.

Furthermore, in the peeling device 1 of the present embodiment, the peeling member 5 is a take-up member 5 that is wound around one end 33b of the polarizing plate 33 that can be peeled from the laminated body 30, and the aforementioned polarizing plate is rotated by rotation 33 is taken up while further stripping in order.

According to this configuration, since the peeling member 5 is the winding member 5, the polarizing plate 33 that has been peeled off can be wound up in this order, which is very efficient. For example, when the polarizing plate 33 is grasped and peeled off, tension is temporarily applied to the part held until the end of the peeling, but when the winding member 5 is used for peeling off, the tensioned part of the polarizing plate 33 is wound up as it is wound up. The sequential change is that, because the peeling member 5 is the take-up member 5, cracking of the polarizing plate 33 near the peeling member 5 can be suppressed more than when the polarizing plate 33 is peeled by grasping the peeling member 5.

Next, a peeling method using the peeling device 1 according to this embodiment will be described.

The peeling method of this embodiment includes the following steps: a mounting step, placing a laminated body 30 having a substrate 31 and a polarizing plate 33 attached to the substrate 31 on the platform member 3; and a holding step, peeling One end 33b of the polarizing plate 33 is held by the peeling member 5; and the peeling step is such that at least one of the laminated body 30 and the peeling member 5 is removed from the laminated body 30 The peeled polarizing plate 33 is rotated in the direction of the difference in tension F between the two ends of the boundary portion S of the polarizing plate 33 that has not yet been peeled, and the polarizing plate 33 is further peeled in sequence by the peeling member 5.

Specifically, the peeling member 5 uses the winding member 5 described above.

In the aforementioned placing step, the laminated body 30 is fixed on the platform member 3.

In the aforementioned holding step, one end portion 33b of the polarizing plate 33 is peeled off and The winding is held on the take-up member 5.

In this holding step, peeling off one end portion 33 b of the polarizing plate 33 from the laminated body 30 is performed as follows. That is, a peeling knife (not shown) provided with a blade portion at the front end is grasped by an operator's finger, and the polarizing light is peeled off by inserting the peeling knife between the substrate 31 and the polarizing plate 33 of the laminated body 30. Part of the plate 33. More specifically, the above-mentioned peeling blade is inserted between the adhesive layer 35 of the laminated body 30 and the substrate 31, and the adhesive layer 35 is peeled together with one end portion 33b of the polarizing plate 33 (see FIG. 1, FIG. 8, and FIG. 11).

In addition, one end 33b of the peeled polarizing plate 33 is wound around the winding member 5 in the following manner. That is, one end 33b of the peeled polarizing plate 33 is wound around the peripheral surface of the take-up member 5, and is fixed to the peripheral surface with an adhesive tape (not shown) or the like.

In the foregoing peeling step, the above-mentioned peeling auxiliary member 7 is used to bend the polarizing plate 33 being peeled and guide the winding member 5, while using the winding member 5, while peeling the polarizing plate 33 in order, the peeled Polarizing plate 33.

Furthermore, when this winding is performed, at least one of the laminated body 30 and the winding member 5 is rotated in such a manner that the tension F difference between the two ends of the boundary portion S is rotated in a direction to eliminate the tension F difference. The tension F difference is converted into a rotational force of at least one of the platform member 3 and the winding member 5.

More specifically, in the stripping step, the platform member 3 capable of freely rotating on the imaginary plane A (refer to FIG. 1) matches the difference in tension F between the two ends of the boundary portion S, and faces upward on the imaginary plane A. The rotation in the direction in which the difference in tension F is eliminated is performed while the winding of the polarizing plate 33 is performed.

Furthermore, the laminated body 30 is pressed against the platform member 3 by the first support member 9, and is supported by being held together with the platform member 3. In addition, the substrate 31 on which the polarizing plate 33 is peeled and exposed is pressed against the platform member 3 by the second support member 11, and is supported by being held together with the platform member 3.

In addition, here, the peeling auxiliary member 7 is arrange | positioned at the inclination angle (theta) 1 with respect to the absorption-axis direction Y (refer the dotted arrow of FIG. 2) of the polarizing plate 33 in the laminated body 30. As shown in FIG. The closer the peeling auxiliary member 7 is parallel to the absorption axis direction Y (the angle θ1 = 0 °) and the closer it is vertical (the angle θ1 = 90 °), the more likely the polarizing plate 33 is broken during peeling. Therefore, considering this viewpoint, the angle θ1 is preferably 40 to 50 °. In addition, the absorption axis direction Y of the polarizing plate 33 shown in FIG. 2 is parallel to the longitudinal direction of the laminated body 30, and the peeling auxiliary member 7 is arranged at an angle θ1 = 45 °.

In addition, from the state shown in FIG. 8, if the polarizing plate 33 is further peeled by the winding member 5 and sequentially wound, the polarizing plate 33 is peeled off as shown in FIG. 9 and FIG. 10. The platform member 3 and The support members 40 are sequentially moved toward the opposite side (refer to the blank arrow) of the laminated body 30 in the peeling direction X together. That is, the platform member 3, the support member 40, and the laminated body 30 are relatively moved in the peeling direction X with respect to the winding member 5, the first support member 9, and the second support member 11. At this time, as shown in FIGS. 4 to 7 described above, the platform member 3 is rotated in such a manner as to eliminate the difference in tension F between the two ends of the boundary portion S. Then, as shown in FIG. 10, when all the polarizing plates 33 are peeled off and the substrate 31 is completely exposed, the stage member 3, the supporting member 40, and the laminated body 30 stop moving.

According to the peeling method of this embodiment, the substrate is peeled from the substrate 31. In the case of the light plate 33, when the tension F equilibrium between the two ends of the boundary portion S collapses, that is, when the tension F1 (or F2) at one end is higher than the tension F2 (or F1) at the other end, the laminated body 30 and At least one of the winding members 5 (here, the laminated body 30) as the peeling member 5 is rotated in a direction to eliminate the difference in the tension F described above. This can prevent the polarizing plate 33 from being broken due to the difference in tension F.

Therefore, the polarizing plate 33 can be peeled from the substrate 31 while preventing the polarizing plate 33 from being broken.

In addition, the peeling method of this embodiment is such that at least one of the laminated body 30 and the peeling member 5 cooperates with the tension F difference between the two ends of the boundary portion S to rotate in a direction to eliminate the tension F difference. The tension F difference is converted into a rotational force of at least one of the platform member 3 and the take-up member 5.

According to this configuration, when the tension F equilibrium between the two ends of the boundary portion S collapses, that is, when the tension F1 (or F2) at one end is higher than the tension F2 (or F1) at the other end, the laminated body 30 and the peeling member can be made. Any one of 5 converts the tension F difference into a rotational force in a manner that the tension F difference is rotated in a direction to eliminate the tension F difference. This can eliminate the tension F difference.

More specifically, as described above, for example, as shown in FIG. 4, when the tension F1 at one end is higher than the tension F2 at the other end, at the boundary portion S, the laminated body 30 is applied from the one end where the tension is greater. Pushing the aforementioned force toward the other end with the smaller tension causes the one end to easily break, but converting the force to the rotational force of the platform member 3 as shown in FIG. 5 can eliminate the tension difference between the two ends. As described above, for example, in contrast to FIG. 4, as shown in FIG. 6, when the tension at the other end F2 is higher than the tension F1 at the one end, at the boundary portion S, the other end where the tension is greater is applied from The other end will The above-mentioned force that the laminated body 30 pushes toward the above-mentioned one end with less tension causes the one-end to be easily broken. However, as shown in FIG. 7, the force is converted into the rotational force of the platform member 3 to eliminate the tension difference between the two ends. .

According to this, by converting to the above-mentioned rotational force, the difference in tension F between the two ends can be eliminated, so that the polarizing plate can be more reliably prevented from being damaged due to the difference in tension F.

In addition, in this embodiment, since the laminated body 30 rotates freely together with the platform member 3, if a tension F difference occurs between the two ends of the boundary portion S, the tension difference is immediately converted into a rotational force.

Furthermore, in the peeling method of this embodiment, the laminated body 30 is fixed to the platform member 3 in the mounting step; in the peeling step, when the laminated body 30 and the peeling member 5 are removed, the laminated body 30 is removed. When the direction of the tension F difference is rotated, the laminated body 30 is rotated together with the platform member 3.

According to this configuration, the laminated body 30 is fixed to the platform member 3 and is rotated with the platform member 3 in a direction to eliminate the difference in tension F, thereby suppressing the friction between the laminated body 30 and the platform member 3, Therefore, the laminated body 30 can be stably rotated. This makes it possible to more reliably suppress cracks in the polarizing plate 33.

Furthermore, in the peeling method with the above-mentioned configuration, the peeling member 5 uses the winding member 5; in the holding step, one end 33b of the polarizing plate 33 is peeled off and wound around the winding member 5; in the peeling step, By taking the winding member 5 a step further The polarizing plate 33 is sequentially peeled off while being taken up, and then the polarizing plate 33 is peeled from the laminated body 30.

According to this configuration, by peeling the polarizing plate 33 by the winding member 5, the polarizing plate 33 being peeled off can be sequentially rolled up, which is very efficient. For example, when the polarizing plate 33 is grasped instead of being peeled off and wound up, tension is applied until the peeling is completed, but when peeling is performed using the winding member 5, the tensioned portion of the polarizing plate 33 is wound up with the winding up. In order to change it, the winding member 5 is peeled while being rolled up, so that the polarizing plate 33 near the peeling member 5 can be prevented from cracking more than when the polarizing plate 33 is peeled off.

As shown in FIG. 11, the multilayer body 30 to which the peeling device 1 and the peeling method of the polarizing plate of this embodiment are provided includes a substrate 31, an adhesive layer 35 formed on one surface 31 a of the substrate 31, and A polarizing plate 33 laminated on the adhesive layer 35.

The substrate 31 is, for example, a liquid crystal display panel, an organic EL display panel, or the like.

Further, as shown in FIG. 12, in this embodiment, the polarizing plate 33 is specifically provided with a polarizing element 41, an adhesive layer 43 formed on both sides of the polarizing element 41, and each of the adhesive layers. 43 上层 的 保护 膜 45。 45 on the laminated protective film.

In addition, according to this embodiment, a case in which the polarizing plate 33 is provided with a protective film 45 laminated on both sides of the polarizing element 41 is exemplified, but other polarizing plates 33 may be used in the present invention to be laminated on one surface of the polarizing element 41 The state of the protective film 45.

The thickness of the polarizing plate 33 is not particularly limited. However, for example, the smaller the thickness of the polarizing plate 33 is, the lower the strength is, the more likely it is to break. On the other hand, the larger the thickness is, the more the strength is more difficult to be broken. Therefore, considering this viewpoint, for example, the thickness of the polarizing plate 33 is 200 μm or less, preferably 90 μm or less, and more preferably 50 μm or less. Accordingly, when the thickness is 200 μm or less, the peeling device 1 and the peeling method according to this embodiment are preferably applicable. The reason is that even if the thickness is small, the equilibrium collapse of the tension applied to the polarizing plate 33 can be suppressed, and it is difficult to cause the polarizing plate 33 to crack when peeled.

The material of the polarizing plate 33 is not particularly limited. However, as described later, it is preferable that the polarizing plate 33 (particularly, the material of the protective film 45 is easily broken) can be applied to the peeling device 1 and the peeling method of this embodiment.

The polarizing element 41 can be formed by dyeing and stretching a polyvinyl alcohol-based film, for example.

The thickness of the polarizing element 41 is about 2 to 30 μm.

A material for forming the adhesive layer 43 is, for example, a conventionally known adhesive.

The protective film 45 can be made of, for example, cellulose resins such as cellulose triacetate; polyester resins, polyether resins, poly resins, polycarbonate resins, polyamide resins, polyimide resins, polyolefin resins, (Meth) acrylic resin, cyclic polyolefin resin Olefin resin), polyarylate resin, polystyrene resin, polyvinyl alcohol resin, and a mixture of these films.

Among these, a protective film made of a (meth) acrylic resin has low strength and is easy to break, so this protective film is preferably applicable to this embodiment. Peeling device 1 and peeling method.

The (meth) acryl group means at least one of a methacryl group and a propenyl group.

The Tg (glass transition temperature) of this (meth) acrylic resin is preferably 115 ° C or higher, more preferably 120 ° C or higher, particularly preferably 125 ° C or higher, and most preferably 130 ° C or higher. When the Tg is 115 ° C or higher, the polarizing plate 33 can be excellent in durability. The upper limit of the Tg of the (meth) acrylic resin is not particularly limited, but it is preferably 170 ° C or lower from the viewpoint of moldability and the like. A film formed from a (meth) acrylic resin can obtain a film having in-plane retardation (Re) and a thickness direction retardation (Rth) of almost zero.

Examples of the (meth) acrylic resin system include poly (meth) acrylates such as polymethyl methacrylate; methyl methacrylate- (meth) acrylic acid copolymerization, and methyl methacrylate- (meth) acrylic acid Ester copolymer, methyl methacrylate-acrylate- (meth) acrylic copolymer, methyl (meth) acrylate-styrene copolymer (MS resin, etc.), polymers with alicyclic hydrocarbon groups (e.g., formazan Methyl acrylate-cyclohexyl methacrylate copolymer, methyl methacrylate- (meth) acrylic acid Alkyl ester copolymer, etc.). Preferred examples are poly (meth) acrylate C1-6 alkyl esters such as poly (meth) acrylate. More preferred is, for example, a methyl methacrylate resin containing methyl methacrylate as a main component (50 to 100% by weight, preferably 70 to 100% by weight).

Specific examples of the (meth) acrylic resin include, for example, Acrypet VH and Acrypet VRL20A manufactured by Mitsubishi Electric Corporation; (meth) acrylic resin having a ring structure in the molecule described in Japanese Patent Laid-Open No. 2004-70296 ; High Tg (meth) acrylic resin obtained by intramolecular crosslinking and intramolecular cyclization.

As the (meth) acrylic resin, a (meth) acrylic resin having a lactone ring structure can also be used. The reason is due to high heat resistance, high transparency, and high mechanical strength due to biaxial stretching.

Examples of the (meth) acrylic resin having a lactone ring structure include Japanese Patent Laid-Open No. 2000-230016, Japanese Patent Laid-Open No. 2001-151814, Japanese Patent Laid-Open No. 2002-120326, and Japanese Patent Laid-Open No. A (meth) acrylic resin having a lactone ring structure described in Japanese Unexamined Patent Publication No. 2002-254544 and Japanese Patent Laid-Open No. 2005-146084.

The (meth) acrylic resin having a lactone ring structure preferably has a ring pseudo structure represented by the following general formula (Chem. 1).

In the formula, R ¹ , R ² and R ³ each independently represent a hydrogen atom or an organic residue having 1 to 20 carbon atoms. The organic residue may contain an oxygen atom.

In the (meth) acrylic resin structure having a lactone ring structure, the content ratio of the lactone ring structure represented by the general formula (Chem. 1) is preferably from 5 to 90% by weight, more preferably from 10 to 70% by weight, and particularly preferably 10 to 60% by weight, most preferably 10 to 50% by weight. If the (meth) acrylic resin structure with a lactone ring structure contains less than 5% by weight of the lactone ring structure represented by the general formula (Chem. 1), heat resistance, solvent resistance, and surface hardness may be suspected. Inadequate possibilities. If the lactone ring structure (a In the base) acrylic resin structure, if the content of the lactone ring structure represented by the general formula (Chem. 1) is more than 90% by weight, the molding processability may be insufficient.

(Meth) acrylic resin with lactone ring structure, the weight average molecular weight (also known as "weight average molecular weight") is preferably 1,000 to 2,000,000, more preferably 5,000 to 1,000,000, especially 10,000 to 500,000, and the best 50,000. ~ 500000. If the weight-average molecular weight exceeds the above range, the molding processability may be insufficient.

The (meth) acrylic resin having a lactone ring structure preferably has a Tg of 115 ° C or higher, more preferably 120 ° C or higher, particularly preferably 125 ° C or higher, and most preferably 130 ° C or higher. Since the Tg is 115 ° C or higher, the polarizing plate 33 containing the Tg is excellent in durability. The upper limit of the Tg of the (meth) acrylic resin having a lactone ring structure is not particularly limited, but it is preferably 170 ° C. or lower from the viewpoint of moldability and the like.

The (meth) acrylic resin with a lactone ring structure is a molded product obtained by injection molding. The higher the total light transmittance measured according to the method of ASTM-D-1003, the better, more preferably 85% or more. More than 88%, and more than 90% of the special line. The total light transmittance is a transparency index. If the total light transmittance is less than 85%, the transparency may decrease.

The thickness of the protective film 45 as described above is usually about 20 to 60 μm.

In this embodiment, the adhesion force of the polarizing plate 33 to the substrate 31 is usually 5 to 15N. If it is the adhesion force, the polarizing plate 33 can be firmly adhered to the substrate 31. Moreover, even when the polarizing plate 33 firmly adhered in this manner is peeled off, deformation (bending) of the peeling assisting member 7 can be suppressed. Therefore, the peeling device 1 and the peeling method of the present embodiment are suitable for having a bonding force within the above range. 的 层 体 30。 The laminated body 30.

This adhesion force is a value measured using an autograph (a precision universal testing machine, manufactured by Shimadzu Corporation).

As described above, the peeling device 1 of this embodiment is used to peel the polarizing plate 33 from the laminated body 30 having the substrate 31 and the polarizing plate 33 attached to the substrate 31, and includes the platform member 3, The laminated body 30 can be placed there; and the peeling member 5 holds one end 33b of the polarizing plate 33 being peeled from the laminated body 30, and further peels the polarizing plate 33 in sequence; the peeling device 1 It is structured so that at least one of the laminated body 30 and the peeling member 5 can face the boundary portion S2 between the polarizing plate 33 that has been peeled from the laminated body 30 and the polarizing plate 33 that has not been peeled. Rotate in the direction of the difference in tension F between the ends.

According to this configuration, when the polarizing plate 33 is peeled from the substrate 31, when the tension F between the two ends of the boundary portion S is evenly broken, that is, the tension F1 (or F2) at one end is higher than the tension F2 at the other end ( Or F1), at least one of the laminated body 30 and the peeling member 5 may be rotated in a direction to eliminate the difference in the tension F. This can prevent the polarizing plate 33 from being broken due to the difference in the tension F.

Therefore, the polarizing plate 33 can be peeled from the substrate 31 while preventing the polarizing plate 33 from being broken.

Furthermore, in the peeling device 1 configured as described above, it is preferable that at least one of the laminated body 30 and the peeling member 5 cooperates with the tension F difference between the two ends of the boundary portion S so as to eliminate the tension F The method of rotating in the difference direction converts the difference in tension F into a rotation force in at least one of the foregoing.

According to this configuration, when the tension F equilibrium between the two ends of the aforementioned boundary portion S collapses, that is, when the tension F1 (or F2) at one end is higher than the tension F2 (or F1) at the other end, At least one of the laminated body 30 and the peeling member 5 is rotated in the above-mentioned elimination direction in accordance with the tension F difference, and the tension F difference is converted into a rotational force. This can eliminate the difference in tension F and prevent the polarizing plate 30 from being damaged due to the difference in tension F.

Furthermore, in the peeling device 1 configured as described above, it is preferable to construct the laminated body 30 and the peeling member 5 so that the laminated body 30 is on an imaginary plane A parallel to the laminated body 30 so as to eliminate the tension F difference. Direction of rotation.

According to this configuration, by rotating the laminated body 30 on a virtual plane A parallel to the laminated body 30 in a direction to eliminate the difference in the tension F, it is possible to make the peeling member 5 rotate as described above. Cracking of the polarizing plate 33 is easily and surely suppressed.

Furthermore, in the peeling device 1 having the above configuration, it is preferable that the laminated body 30 can be fixed to the platform member 3, and the laminated body 33 and the platform member 3 are rotated together in a direction to eliminate the tension F difference.

According to this configuration, by fixing the laminated body 30 to the platform member 3 and rotating the laminated body 30 together with the platform member 3 in a direction to eliminate the difference in tension F, the laminated body 30 and the platform member 3 can be suppressed. Due to the friction between them, the laminated body 30 can be stably rotated. This allows more reliable suppression The polarizing plate 33 is broken.

Furthermore, in the peeling device 1 configured as described above, the peeling member 5 is preferably a winding member 5 that can be wound around one end portion 33b of the polarizing plate 33 being peeled from the laminated body 30, and then rotated to The polarizing plate 33 is further peeled in order and is wound up.

According to this configuration, since the peeling member 5 is the winding member 5, the peeled polarizing plate 33 can be wound up in sequence, which is very efficient. For example, when the polarizing plate 33 is grasped and peeled off, tension is temporarily applied to the part until the end of the peeling, but when peeling is performed using the take-up member 5, the tensioned part of the polarizing plate 33 is taken along with the winding. The sequential change is that, since the peeling member 5 is the winding member 5, cracking of the polarizing plate 33 near the peeling member 5 can be more suppressed than when the polarizing plate 33 is peeled by grasping the peeling member 5.

In addition, the peeling method according to this embodiment includes the following steps: a mounting step, which is to place a laminated body 30 having a substrate 31 and a polarizing plate 33 adhered to the substrate 31 on the platform member 3; A step of peeling off one end portion 33b of the polarizing plate 33 and holding the one end portion 33b by the peeling member 5; and a peeling step of causing at least one of the laminated body 30 and the peeling member 5 to be removed from The polarizing plate 33 peeled from the laminated body 30 is rotated in the direction of the difference in tension F between the two ends of the boundary portion S of the polarizing plate 33 that has not been peeled, and the peeling member 5 is used to further The polarizing plate 33 is sequentially peeled, so that the polarizing plate 33 is peeled from the laminated body 30.

According to this configuration, when the polarizing plate 33 is peeled from the substrate 31, when the tension F between the two ends of the boundary portion S is uniformly collapsed, that is, when the tension F1 (or F2) at one end is higher than the tension F2 at the other end In the case of (or F1), at least one of the laminated body 30 and the peeling member 5 can be rotated in a direction to eliminate the difference in the tension F. This can prevent the polarizing plate 33 from being broken due to the difference in the tension F.

Therefore, the polarizing plate 33 can be peeled from the substrate 31 while preventing the polarizing plate 33 from being broken.

Furthermore, in the peeling method with the above-mentioned configuration, the peeling step may be such that at least one of the laminated body 30 and the peeling member 5 cooperates with the tension F difference between the two ends of the boundary portion S toward the direction of eliminating the tension F difference. The rotation method converts the tension F difference into a rotation force of at least one of the foregoing.

According to this configuration, when the tension F equilibrium between the two ends of the above-mentioned boundary part S collapses, that is, when the tension F1 (or F2) at one end is higher than the tension F2 (or F1) at the other end, it is possible to make At least one of the laminated body 30 and the peeling member 5 converts the tension F difference into a rotational force in accordance with the manner in which the tension F difference is rotated in the elimination direction. This can eliminate the difference in tension F between the two ends, and prevent the polarizing plate 33 from being damaged due to the difference in tension F.

Furthermore, in the peeling method having the above-mentioned configuration, the peeling step is preferably performed in the laminated body 30 and the peeling member 5 so that the laminated body 30 faces the direction of eliminating the tension difference on an imaginary plane A parallel to the laminated body 30. Spin.

According to this configuration, by rotating the laminated body 30 on the imaginary plane A parallel to the laminated body 30 in a direction to eliminate the difference in tension F, it is possible to make the peeling member 5 rotate more than when the peeling member 5 is rotated as described above. Cracking of the polarizing plate 33 is easily and surely suppressed.

In addition, the above-mentioned peeling method is preferably as follows: the mounting step is to fix the laminated body 30 to the platform member 3; the peeling step is to the laminated body 30 and the peeling member 5 to make the laminated body 30 When rotating in a direction to eliminate the difference in tension F, the laminated body 30 is rotated together with the platform member 3.

According to this configuration, by fixing the laminated body 30 to the platform member 3 and rotating it with the platform member 3 in a direction that eliminates the tension difference described above, the friction between the laminated body 30 and the platform member 3 can be suppressed. Therefore, the laminated body 30 can be stably rotated. This can more reliably suppress the occurrence of cracks in the polarizing plate 33.

Furthermore, in the peeling method of the above configuration, it is preferable to use the winding member 5 as the peeling member 5; and in the holding step, one end portion 33b of the polarizing plate 30 is peeled off and wound around the coiling member 5; In the peeling step, the polarizing plate 33 is peeled further and sequentially wound by the winding member 5, and the polarizing plate 33 is peeled from the laminated body 30.

According to this configuration, by peeling the polarizing plate 33 by the winding member 5 described above, the peeled polarizing plate 33 can be sequentially wound up, which is very effective. rate. For example, when the polarizing plate 33 is grasped instead of being peeled off and wound up, tension is applied until the end of the peeling. However, when the winding member 5 is used for peeling off, the tensioned portion of the polarizing plate 33 is rolled up. In order to change, the peeling of the polarizing plate 33 near the peeling member 5 can be more suppressed by the peeling of the polarizing plate 33 by the take-up of the take-up member 5.

As described above, according to this embodiment, it is possible to provide a peeling device 1 and a peeling method capable of peeling the polarizing plate 33 from the substrate 31 while preventing the polarizing plate 33 from being cracked.

Next, a peeling device and a peeling method according to a second embodiment of the present invention will be described.

First, the peeling apparatus 1 of this embodiment is demonstrated.

The peeling device 1 of this embodiment is the same as the first embodiment except that the peeling auxiliary member 7 is provided with a component different from the first embodiment (see FIGS. 13 to 16), so it is the same as the first embodiment. The components common to the first embodiment are given the common element symbols, and the description will not be repeated.

As shown in FIGS. 14 and 15, the peeling assisting member 7 provided in the peeling device 1 of this embodiment has a long plate shape, and has a bottom surface portion 7 a and a front end portion 7 b. In the present embodiment, the peeling assisting member 7 further includes an inclined portion 7c which is inclined from the front end portion 7b toward the base end side (downstream side in the peeling direction X, right side in FIG. 14) and away from the bottom surface portion 7a.

The peeling auxiliary member 7 is formed to have a length (maximum length) L from the front end side toward the base end side direction (peeling direction X), and is larger than the height (maximum height) H from the bottom surface (the surface of the bottom surface portion 7a).

The ratio (H: L) of the length H to the length L is preferably 1: 3 to 1: 5.

Furthermore, the height H is preferably 15 to 20 mm, and the length L is preferably 50 to 75 mm.

The bottom surface portion 7 a is arranged along one surface 33 a of the laminated body 30 on the side of the polarizing plate 33. Specifically, the bottom surface portion 7 a is disposed at a position where the polarizing plate 33 is peeled off using the peeling assisting member 7 and the laminated body 30 is in contact with each other to suppress the floating of the laminated body 30. The arrangement of the bottom surface portion 7a is not limited in particular on the premise that the bottom surface portion 7a contacts the laminated body 30 and can suppress the floating of the laminated body 30 during the above-mentioned peeling. For example, the bottom surface portion 7a may be arranged so as to be in contact with the surface 33a on the side of the polarizing plate 33 before the peeling using the peeling auxiliary member 7 is started, or may be arranged in a non-contact state near the surface 33a. .

The front end portion 7 b is located in the peeling direction X (direction from the front end side of the peeling assisting member 7 toward the base end side), and is located on the upstream side (the left side in FIG. 13) from the winding member 5. With this arrangement, the peeled polarizing plate 33 is bent along the curved surface (front end edge) 7ba of the tip portion 7b, and is guided to the proximal end side (downstream side in the peeling direction X) of the peeling assisting member 7. That is, the peeled polarizing plate 33 is guided to the winding member 5.

The curvature radius r of the front end edge 7ba of the front end portion 7b is not particularly limited, and can be appropriately set.

Here, as described above, since the adhesion force of the polarizing plate 33 to the substrate 31 is extremely high, it is difficult for the peeled polarizing plate 33 to track the leading end portion 7b (the leading edge 7ba) near the boundary portion S. As shown in FIG. 15, the larger the radius of curvature r of the front end portion 7 b is, the more the space between the polarizing plate 33 and the front end portion 7 b is peeled off. The larger the gap, the greater the tendency. That is, the boundary portion S is easily located away from the contact portion M (upstream side, left side in FIG. 15) between the front end portion 7 b and the laminated body 30.

On the other hand, as shown in FIG. 16, as the curvature radius r of the front end portion 7 b is smaller, the gap between the peeled polarizing plate 33 and the front end portion 7 b tends to be smaller. That is, the boundary portion S is easily located near the contact portion M (downstream side, right side in FIG. 16) between the contact portion M between the front end portion 7 b and the laminated body 30.

In addition, the larger the gap between the peeled polarizing plate 33 and the front end portion 7 b, the peeling force of the polarizing plate 33 converted through the front end portion 7 b is in the longitudinal direction of the peeling auxiliary member 7 (the vertical direction of the peeling direction X) Easier to change. The substrate 31 is easily broken.

Furthermore, according to technical common sense, if the curvature radius r is too small, the tip portion 7b becomes excessively sharp, and the polarizing plate 33 is easily cut.

Therefore, for example, considering the above point of view, the curvature radius of the front end edge 7ba of the front end portion 7b can be appropriately set, and the curvature radius r is preferably 2.5 to 17.5 mm.

When the curvature radius r of the front end portion 7b is 17.5 mm or less, the boundary portion S of the polarizing plate 33 can be brought closer to the contact portion M of the laminated body 30 and the bottom surface portion 7a. Thereby, the force which peels off the polarizing plate 33 transmitted through the front-end | tip part 7b does not change easily in the extending direction (vertical direction of the peeling direction X) of the front-end | tip part 7b, and the polarizing plate 33 is hardly cracked. In addition, the occurrence of breakage of the substrate 31 can be further suppressed.

In addition, when the curvature radius r of the front end portion 7b is 2.5 mm or more, the front edge 7ba can be prevented from becoming excessively sharp, and the polarizing plate 33 can be prevented from being easily cut.

Therefore, the polarizing plate 33 can be more easily peeled from the substrate 31.

The inclined portion 7c guides the polarizing plate 33 guided through the front end portion 7b to the base end side (downstream side in the peeling direction X) of the peeling assisting member 7.

Since the peeling auxiliary member 7 has the inclined portion 7c, the polarizing plate 33 to be peeled can be guided by the inclined portion 7c after being guided by the front end portion 7b. That is, by the path of the polarizing plate (peeled polarizing plate) 33 of the front end portion 7b, the inclined portion 7c can be maintained at a predetermined angle θ2. This can suppress the variation in the angle θ2 of the peeled polarizing plate 33, and thus can suppress the variation in the tension applied to the distal end portion 7b due to the angle θ2.

According to this, it is possible to more suppress the collapse of the balance of the tension applied to the peeling assisting member 7, so that the polarizing plate 33 can be peeled from the substrate 31 more easily.

The angle θ2 of the inclined portion 7c to the parallel plane T of the laminated body 30 is preferably 10 to 30 °.

Accordingly, when the angle θ2 of the inclined portion 7c is 10 to 30 °, the peeling auxiliary member 7 can be pressed against the laminated body 30 by the peeled polarizing plate 33, and the polarizing plate 33 can be guided toward the base end side.

Therefore, the peeling auxiliary member 7 can be made more stable, and the polarizing plate 33 can be peeled from the substrate 31 more easily.

The material for forming the peeling auxiliary member 7 is the same as that of the first embodiment, and may be, for example, stainless steel, carbon tool steel, high-speed tool steel, chrome steel, chrome molybdenum steel, manganese steel, and other alloy materials. And ceramic materials. The peeling assisting member 7 may be hollow or solid.

The front end edge 7ba of the front end portion 7b is preferably a mold release treatment in order to smooth the surface of the polarizing plate 33 to be peeled off. This demolding treatment can be performed, for example, by applying a surface treatment such as saturated polyester coating or BICOAT treatment to the front end portion 7ba, or by attaching a conductive tape to the front end portion 7ba, whereby the front end portion 7ba can be easily smoothed.

Next, a method using the peeling device 1323 of this embodiment will be described.

The peeling method of this embodiment is the same as the peeling method of the first embodiment, except that the peeling device 1 provided with the peeling assisting member 7 is used. Therefore, the aspects common to the first embodiment are not repeated. Instructions.

In the peeling method of this embodiment, in the peeling step of the peeling method of the first embodiment, instead of the peeling assisting member 7 used in the first embodiment, a different peeling assisting member 7 is used to peel off the polarizing plate 33. Specifically, in the aforementioned peeling step, a plate-shaped peeling auxiliary member 7 having a bottom surface portion 7a and a front end portion 7b is used, and the polarizing plate 33 being peeled is bent along the front end portion 7b of the front end portion 7b and guided as the peeling member 5 The winding member 5 is used together with the winding member 5 to peel the polarizing plate 33 further and sequentially winding it, so as to peel the polarizing plate 33 from the laminated body 30. The bottom surface 7a is along the laminated body 30. The polarizing plate 33 is arranged on one surface 33a on the polarizing plate 33 side, and the front end portion 7b guides the polarizing plate 33 being peeled in a curved manner to the peeling member 5 in a curved manner.

In addition, the peeling assisting member 7 further includes an inclined portion 7a, which faces away from the bottom end portion 7a toward the base end side from the front end portion 7b. By tilting in such a manner, the polarizing plate 33 guided along the leading edge 7ba can be guided further along the inclined portion 7c to the winding member 5.

As described above, the peeling device 1 according to the present embodiment further includes a plate-shaped peeling auxiliary member 7 that can be used to hang the polarizing plate 33 that is being peeled and guide the polarizing plate 33 to the peeling member 5; and The peeling auxiliary member 7 has a bottom surface portion 7a arranged along one surface 33a of the laminated body 30 on the side of the polarizing plate 33, and a front end portion 7b that bends the polarizing plate 33 in a peeling manner. The aforementioned peeling member 5 is guided.

Furthermore, in the peeling method of this embodiment, the peeling step uses a plate-shaped peeling auxiliary member 7 having a bottom surface portion 7a and a front end portion 7b, and the peeled polarizing plate 33 is bent along the front end portion 7ba to guide the peeling. At the same time, the polarizing plate 33 is further peeled in sequence by the peeling member 5 at the same time, so that the polarizing plate 33 is peeled from the laminated body 30; and the bottom surface portion 7a is along the laminated body 30 near the polarizing plate 33 side One surface 30a is disposed, and the front end edge 7ba of the front end portion 7b is formed in a curved shape, so that the peeled polarizing plate 33 can be bent along the front end edge 7ba.

According to the peeling device and the peeling method of this embodiment, the polarizing plate 33 can be peeled off from the substrate 30 by using the peeling auxiliary member 7 described above, and the polarizing plate 33 can be peeled off through the front end portion 7b and the bottom surface portion 7a. The polarizing plate 33 is curved along the front end edge 7ba of the front end portion 7b and can be guided to the base end side. Thereby, cracks in the polarizing plate 33 can be more reliably suppressed, and the peeled The polarizing plate 33 is guided to the proximal end side.

In addition, since the peeling assisting member 7 has a bottom surface portion 7a, the tension applied to the front end portion 7b during the peeling is dispersed in the remaining portion (the base end side portion). Therefore, the peeling assisting member 7 can be suppressed compared to the roll-shaped peeling assisting member 7. The tension causes the peeling assisting member 7 to bend. With this, it is possible to prevent the balance of the tension applied to the peeling assisting member 7 from collapsing. Therefore, it is possible to prevent the polarizing plate 33 from being broken due to the balance collapse.

Furthermore, since the peeling assisting member 7 is not easily bent as described above, it is excellent in durability.

In addition, since the peeling assisting member 7 is excellent in durability, the radius of curvature of the front end portion 7b can be made smaller than that of the roll-shaped peeling assisting member 7. Thereby, the balance of the tension applied to the peeling auxiliary member 7 can be suppressed from being broken, and the substrate 31 can be prevented from being broken.

Therefore, it is possible to peel the polarizing plate 33 from the substrate 31 while more reliably suppressing the occurrence of cracks in the polarizing plate 33.

Furthermore, in the peeling device 1 and the peeling method of this embodiment, it is preferable that the peeling auxiliary member 7 further includes an inclined portion 7c which is inclined from the front end portion 7b toward the base end side and away from the bottom surface portion 7a.

According to this configuration, since the peeling auxiliary member 7 has the above-mentioned inclined portion 7c, the polarizing plate 33 being peeled can be guided to the proximal end side by the inclined portion 7c after being guided by the front end portion 7b. That is, the path of the polarizing plate 33 that is being peeled off through the front end portion 7b can be maintained at a predetermined angle θ2 by the inclined portion 7c. This can suppress the angle θ2 of the polarizing plate being peeled off. Therefore, it is possible to suppress a change in the tension applied to the tip portion 7b due to the change.

Therefore, it is possible to more suppress the collapse of the balance of the tension applied to the peeling assisting member 7, and it is possible to more surely suppress the occurrence of cracking of the polarizing plate 33.

The peeling device 1 and the peeling method according to the first and second embodiments of the present invention are as described above, but the present invention is not limited to the above embodiments, and appropriate design changes can be made within the scope of the present invention.

For example, in each of the above embodiments, the platform member 3 and the support member 40 are moved in the peeling direction X. However, instead of moving these members, the winding member 5, the peeling auxiliary member 7, and the first The support member 9 and the second support member 11 move. Further, a configuration in which both the platform member 3 and the supporting member 40, and the winding member 5, the peeling assisting member 7, the first supporting member 9, and the second supporting member 11 can be moved may be adopted. In addition, a means for making such a movement is a well-known movement mechanism.

In addition, a structure in which the platform member 3 cannot be rotated without the support member 40 and a structure in which the laminated body 30 is not fixed to the platform member 30 and can be slid on the platform member 3 may also be adopted. According to this configuration, the laminated body 30 can be relatively rotated relative to the platform member 3 and the winding member 5 in a direction that eliminates the difference in tension F between the two ends of the boundary portion S.

In addition, each of the above embodiments illustrates a case where the laminated body 30 having the substrate 31, the adhesive layer 35, and the polarizing plate 33 is peeled off. However, the laminated body to which the present invention is applicable can also use the substrate 31, the adhesive layer 35, and the polarizing plate. In addition to 33, the polarizing plate 33 is further provided with a state in which other films are further laminated.

In addition, the above-mentioned second embodiment exemplifies the use of a peeling assist structure. The piece 7 has a state in which the polarizing plate 33 is peeled from the laminated body 30. However, as shown in FIG. 17, the present invention can also adopt a configuration in which the polarizing plate 33 is peeled without using a peeling auxiliary member 7. In the present invention, when the polarizing plate 33 is peeled from the laminated body 30 by using the peeling assisting member 7, the peeling assisting member 7 is not particularly limited to the above-mentioned embodiment, and appropriate design changes can be made.

In addition, in each of the above-mentioned embodiments, a configuration is adopted in which the platform member 3 can be rotated freely, but in addition to the present invention, a configuration in which the platform member 3 is driven to rotate can also be adopted. This configuration can take, for example, a configuration in which the peeling device 1 includes a driving member (not shown), a measuring member (not shown), and a control member. This drive member drives and rotates the platform member 3. This measuring means measures the tension F between the two ends of the boundary portion S, and outputs the measurement result in the form of electronic data. The control member receives electronic data output from the measuring member, calculates a rotation direction and a rotation angle that can eliminate the tension F difference from the tension F difference between the two ends, and calculates based on just rotating in the calculated rotation direction. The rotation angle method uses a drive member (not shown) to rotate the platform member 3. The peeling method using the peeling device 1 is based on the measurement result of the measurement member, while the platform member 3 is fitted with the tension F difference, and the tension F difference is converted into a rotational force of the platform member 3 while rotating, The polarizing plate 33 is peeled from the laminated body 30.

According to such a peeling device 1 and a peeling method, since the peeling direction can be adjusted more precisely in accordance with the measurement result of the tension F, the difference in tension F between the two ends of the boundary portion S can be eliminated more appropriately. For example, when the platform member 3 is set to be rotatable as described above, if one end of the boundary portion S is not applied, a greater tension is applied to the platform member 3 than the gravity generated by its own weight. F, there is a possibility that the platform member 3 cannot be rotated. However, by using the structure in which the control member is rotated, the platform member 3 can be rotated in cooperation with the above-mentioned tension F smaller than gravity.

In addition, each of the embodiments described above exemplifies a state in which the laminated body 30 is rotated, but the present invention may also adopt a state in which the winding member 5 is rotated, and both the laminated body 30 and the winding member 5 may be adopted. Both are rotated. This structure is a structure which supports the take-up member 5 by the support member (not shown) which can be rotated to the said direction which removes a tension | tensile_strength, for example.

In addition, in each of the above embodiments, the peeling member 5 is in the form of adopting the winding member 5. However, in the present invention, the peeling member 5 is not particularly limited to the winding member. For example, the peeling member 5 may replace the winding member 5 described above and adopt a structure as shown in FIGS. 18 to 20. The peeling member 5 has a configuration in which the polarizing plate 33 is further peeled by sandwiching and holding one end portion 33 b of the peeling polarizing plate 33 and moving in the peeling direction X. Specifically, in the peeling device 1 provided with this peeling member 5, the peeling member 5 is provided with the support part 5a which can be moved to the peeling direction X of the polarizing plate 33, and when it is supported by this support part 5a, it can clamp A holding portion 5b that holds one end portion 33b of the peeling polarizing plate 33 is provided with a driving member such as a servo motor or a linear motor that moves the supporting portion 5a in the peeling direction X. One end of the polarizing plate 33 is held by the holding portion 5b. The part 33b is held, and the support part 5a is moved by the drive member in this state, and the polarizing plate 33 is peeled (refer FIG. 20).

Claims (14)

A peeling device for peeling the polarizing plate from a laminated body having a substrate and a polarizing plate attached to the substrate, comprising: a platform member capable of placing and fixing the laminated body; and The peeling member is one that holds one end of the polarizing plate that is being peeled from the laminated body, and further peels the polarizing plate in order; the peeling device is configured to enable the platform on which the laminated body is fixed. At least one of the member and the peeling member is located on an imaginary plane parallel to the laminated body toward the two ends of the boundary portion between the polarizing plate that has been peeled from the laminated body and the polarizing plate that has not been peeled off. Rotate in the direction of the tension difference. If the peeling device of claim 1 is such that at least one of the platform member and the peeling member to which the laminated body has been fixed, fits between the two ends of the boundary portion on an imaginary plane parallel to the laminated body. The tension difference is rotated in a direction that eliminates the tension difference, so that the tension difference is converted into a rotational force of the at least one of the foregoing. If the peeling device of claim 1 is configured, the platform member to which the laminated body has been fixed and the peeling member can be configured such that the platform member to which the laminated body is fixed can be parallel to the laminated body. The imaginary plane is rotated in a direction to eliminate the aforementioned tension difference. The peeling device according to claim 1, is configured to fix the laminated body on the platform member, so that the laminated body can rotate with the platform member in a direction to eliminate the tension difference. For example, the peeling device of claim 1 further includes a plate-shaped peeling auxiliary member, which can be used for winding the polarizing plate being peeled and guiding the polarizing plate to the peeling member; and the peeling auxiliary member It has a bottom surface portion disposed along one surface of the laminated body on the side of the polarizing plate, and a front end portion that guides the polarizing plate in the peeling direction to the peeling member in a curved manner. The peeling device according to claim 5, wherein the peeling assisting member further includes an inclined portion which is inclined from the front end portion toward the base end side and away from the bottom surface portion. For example, the peeling device of claim 1, wherein the peeling member is a take-up member, which can be wound around one end of the polarizing plate that is being peeled from the laminated body, and then one side of the polarizing plate is further peeled one by one by rotation and Retractors on the side. A peeling method includes the following steps: a mounting step of mounting and fixing a laminated body having a substrate and a polarizing plate adhering to the substrate on the platform member; and a holding step of peeling the foregoing And a peeling step in which at least one of the platform member and the peeling member to which the laminated body is fixed is placed on an imaginary plane parallel to the laminated body, and one end of the polarizing plate is held by the peeling member. Rotating in a direction that eliminates the tension difference between the two ends of the polarizing plate that has been peeled from the laminated body and the boundary portion of the polarizing plate that has not been peeled, and further strips the polarizing plate in order by using the peeling member, The polarizing plate is peeled from the laminated body. The stripping method according to claim 8, wherein the stripping step is such that at least one of the platform member and the stripping member to which the laminated body has been fixed, cooperates with the foregoing on an imaginary plane parallel to the laminated body. The tension difference between the two ends of the boundary portion is rotated in a direction that eliminates the tension difference, so that the tension difference is converted into a rotation force of at least one of the foregoing. For example, the stripping method according to item 8, wherein the stripping step is performed on the platform member to which the laminate is fixed, and the peeling member, so that the platform member on which the laminate is fixed is parallel to the laminate. The imaginary plane is rotated in a direction to eliminate the aforementioned tension difference. The stripping method according to claim 8, wherein the placing step is to fix the laminated body on the platform member; the stripping step is to fix the laminated member to the platform member and the peeling member to which the laminated body is fixed, When the platform member having the laminated body is rotated in a direction that eliminates the tension difference, the laminated body is rotated together with the platform member. According to the peeling method of claim 8, wherein the peeling step uses a peeling auxiliary member including a bottomed surface portion and a front end portion, the polarizing plate being peeled is guided to the peeling member along the front end portion in a curved manner while using the aforementioned The peeling member further strips the polarizing plate in order to peel the polarizing plate from the laminated body; the bottom surface portion is arranged along the laminated body on one side of the polarizing plate side, and the front end portion is provided for being peeling. The aforementioned polarizing plate is curved along a curved surface. The peeling method according to claim 12, wherein the peeling auxiliary member further includes an inclined portion which is tilted from the front end portion toward the base end side and away from the bottom surface portion; the polarized light guided by the front end portion is guided along the direction. The plate guides the peeling member further along the inclined portion. If the peeling method of claim 8 uses a winding member as the aforementioned peeling member; and, in the aforementioned holding step, one end of the polarizing plate is peeled off and wound around the aforementioned rolling member; in the aforementioned peeling step, using The winding member peels the polarizing plate further and sequentially while peeling the polarizing plate, thereby peeling the polarizing plate from the laminated body.