JP2021024745A - Peeling device - Google Patents

Abstract

To provide a peeling device capable of peeling efficiently a protective sheet pasted on a panel for a display device.SOLUTION: A peeling device has a support part 200 for supporting a panel S for a display device on which a protective sheet having a rectangular shape is pasted, and a crimping tool 410 for peeling the protective sheet from a peeling starting end, by crimping an adhesive face of an adhesive tape TP in which a longer direction is a direction crossing a longer direction of the protective sheet, onto the peeling starting end which is one end in the longer direction of the protective sheet, and by separating it from the panel S for the display device.SELECTED DRAWING: Figure 2

Description

The present invention relates to a peeling device.

Display devices such as liquid crystal displays (LCDs) and organic EL displays (OLEDs) include a process of forming circuits and signal lines on a substrate, a process of bonding substrates to form a panel as a substrate constituting a display area, and the like. It is manufactured through a process of attaching a driver IC or the like for driving to a terminal outside the display area of the panel.

As a method of mounting a driver IC, a method using a flexible film-shaped electronic component equipped with a driver IC such as a COF (chip on film) has been conventionally performed. This is a method of crimping and connecting the terminals of electronic components to the terminals formed by being exposed in the horizontal direction parallel to the display surface from the periphery of the display area of the panel. Further, the printed circuit board is crimped to the above electronic components in a horizontal state to electrically connect the wiring for securing the connection with the outside to manufacture the display device.

Anisotropic conductivity is used to ensure the conductivity between the electrodes of each component by heat-bonding the terminals of the display device panel and the electronic component and the connection between the electronic component and the printed circuit board. A film (ACF: Anisotropic Conductive Film) is used. (See Patent Document 1)

Japanese Unexamined Patent Publication No. 07-253590

A protective sheet is attached to the panel as described above in order to prevent defects in the manufacturing process. For example, a protective sheet for preventing scratches is attached to the display area of the panel and the area for connecting electronic components. Further, separately from this, a protective sheet (reinforcing sheet) for reinforcing the panel may be attached between the display area and the area for connecting the electronic components. For example, the panel may be made of resin and the final form of the panel may be a bent shape between the display area and the edge of the panel. The portion where the panel is bent is thinly processed by a laser on the side opposite to the side where the electronic component of the panel is crimped in advance so that the panel can be easily bent. That is, there is a thinly processed portion between the area for connecting the electronic components and the display area.

If it is processed thinly in this way, the rigidity of the panel becomes weak at that portion and becomes unstable, which may hinder the crimping of electronic components. For this reason, a protective sheet is attached to the thinly processed portion to reinforce the panel, and after crimping the electronic component, the protective tape is peeled off, covered with resin, and then the panel is bent.

On the other hand, the protective sheet for the display area is provided so as to be detachable from the protective sheet for the area connecting the electronic components and the protective sheet for reinforcing the thinly processed portion. This is because it is necessary to continue to protect the display area when the electronic component is connected to the area to which the electronic component is connected or when the protective sheet of the thinner processed portion is peeled off. That is, three independent protective sheets may be attached to the panel for the display device.

As a result, even after the protective sheet in the area to connect the electronic component is peeled off and the electronic component is connected to the terminal, the protective sheet remains attached to the other area. Then, in the subsequent step, the protective sheet of the thinly processed portion is peeled off and covered with a resin to protect the conductive portion. However, the protective sheet for the area connecting electronic components and the protective sheet for reinforcing thinly processed parts are very narrow (about several mm), so even if they are manually peeled off, they are automatically peeled off. Even if it is peeled off, it is difficult to surely peel off only the target protective sheet, and there has been a demand for a device capable of efficiently peeling off.

The present invention has been proposed to solve the above-mentioned problems, and an object of the present invention is to provide a peeling device capable of efficiently peeling a protective sheet attached to a display device panel.

In order to achieve the above object, the peeling device of the present invention has a support portion that supports a display device panel to which a rectangular protective sheet is attached, and a direction in which the longitudinal direction intersects the longitudinal direction of the protective sheet. It has a crimping tool for peeling the protective sheet from the peeling start end by crimping the adhesive surface of the adhesive tape to the peeling start end which is one end in the longitudinal direction of the protective sheet and then separating from the display device panel. ..

The present invention can provide a peeling device capable of efficiently peeling a protective sheet attached to a display device panel.

It is a top view which shows the panel for a display device to which the protective sheet which is the object of peeling of embodiment is attached. It is a front view which shows the peeling apparatus of embodiment. It is a perspective view which shows the crimping part, the holding part and the hanging part. It is a perspective view which shows a crimping tool and a holding. It is a top view which shows the position of a crimping surface, an adhesive tape and a protective sheet. It is a top view which shows the drive mechanism of a holding part. It is a block diagram which shows the control device. It is a flowchart which shows the peeling procedure of embodiment. It is explanatory drawing which shows the peeling operation of the peeling start end of the protective sheet by a crimping tool. It is explanatory drawing which shows the peeling operation of the whole protection sheet by pressing. It is explanatory drawing which shows the peeling operation of the peeling start end of the protective sheet by a crimping tool. It is explanatory drawing which shows the operation of the hanging member. It is a flowchart which shows the procedure of the adhesive force recovery process.

An embodiment of the present invention (hereinafter referred to as the present embodiment) will be specifically described with reference to the drawings.

[Display device panel]
With reference to FIG. 1, a display device panel (hereinafter, simply referred to as a panel) S to be peeled off from the protective sheet PS will be described. The panel S is a member having a terminal T for connecting a display unit D having a display function and an electronic component F having a drive circuit. The terminals T are conductive members, and are arranged on one surface of the panel S in a direction along the sides forming the outer edge. Each terminal T extends in a direction orthogonal to the arrangement direction of the plurality of terminals T and is parallel to each other. For example, a flexible film-shaped electronic component F equipped with a driver IC such as a COF is connected to the terminal T of the panel S by heat crimping via an anisotropic conductive film (ACF).

The area in the plane direction including the display unit D of the panel S is referred to as a display area Ad. Of the regions in the plane direction including the terminal T of the panel S, the region to which the electronic component F is connected is referred to as a connection region Ac. The area in the plane direction between the display area Ad and the connection area Ac of the panel S is referred to as a space area Ai. The panel S has a rectangular shape, and the outer edge of the display area Ad is a rectangular area that approximates the outer edge of the panel S and occupies most of the area of the panel S. The connection area Ac is a rectangular area along one side of the outer edge of the panel S. The gap region Ai is a rectangular region along between the display region Ad and the connection region Ac. The back surface (the surface opposite to the surface on which the terminal T is formed) of the panel S in the gap region Ai is thinly processed so as to be easily bent. The connection area Ac and the space area Ai are narrower areas than the display area Ad.

A protective sheet PS is attached to the surface of the panel S. The protective sheet PS is made of resin, and is divided and provided so that it can be separated and peeled off from a plurality of regions. More specifically, the protective sheet PS attached to the entire surface of the panel S has a linear notch at the boundary between the display area Ad, the gap area Ai, and the connection area Ac, so that the protective sheet PSx, It is separably provided in PSy and PSz. The protective sheet PSx is a rectangular sheet attached to the display area Ad. The protective sheet PSy is a rectangular sheet attached to the connection area Ac. The protective sheet PSz is a rectangular sheet attached to the space area Ai. Since the connection area Ac and the gap area Ai are narrower than the display area Ad, the protective sheets PSy and PSz that protect them also have a narrower shape than the protective sheet PSx. That is, the protective sheets PSy and PSz have a strip-shaped or tape-shaped rectangular shape in which the length of the long side is twice or more the length of the short side.

In the present embodiment, the protective sheet PS to be peeled off will be described by the protective sheet PSz that reinforces the gap region Ai. In FIG. 1, the protective sheet PSy is shown in the connection region Ac, but in the pre-peeling step according to the present embodiment, the protective sheet PSy is peeled off and the electronic component F is connected to the terminal T. The protective sheet PSx that protects the display area Ad remains attached in order to protect the display unit D.

[Adhesive tape]
The adhesive tape TP used in the present embodiment is a member for peeling off the strip-shaped protective sheet PSz attached to the panel S. As shown in FIGS. 2, 3 and 4, the adhesive tape TP is made of resin and is a long strip-shaped member, and one surface has adhesiveness. The adhesive tape TP is sent out and wound up by the supply / discharge mechanism 300 described later (see FIG. 2).

[Overview]
Next, the outline of the peeling device 100 will be described. As shown in FIG. 2, the peeling device 100 includes a support portion 200, a supply / discharge mechanism 300, a crimping portion 400, a pressing portion 500, a hanging portion 600, an imaging unit 700, and a control device 800. The support portion 200 supports the panel S of the display device panel, which is a substrate. The supply / discharge mechanism 300 is a mechanism for supplying and discharging the adhesive tape TP to the crimping portion 400. The crimping portion 400 has a crimping tool 410. The crimping tool 410 crimps the adhesive surface of the adhesive tape TP to one end of the protective sheet PSz, and then separates from the panel S together with the adhesive tape TP to press the protective sheet PSz crimped to the adhesive surface of the adhesive tape TP. It peels off from one end (see FIG. 9). One end at which the protective sheet PSz starts peeling is designated as the peeling start end B, and the other end on the opposite side thereof is designated as the peeling end E.

The crimping tool 410 has a crimping surface 411 that presses the adhesive tape TP against the protective sheet PSz to crimp it (see FIG. 1). The crimping tool 410 crimps the crimping surface 411 at a position including the peeling start end B, that is, a position overlapping the peeling start end B.

The pressing portion 500 has a pressing 510 as shown in FIG. As shown in FIG. 9, the presser 510 supports the panel S against the peeling of the peeling start end B of the protective sheet PSz due to the rise of the adhesive tape TP crimped to the protective sheet PSz by the crimping tool 410 (FIG. 9). 2). Further, as shown in FIG. 9, the peeling start end B is peeled off, so that a space is created between the protective sheet PSz and the panel S. In this space, the presser 510 moves relative to the panel S in the direction toward the peeling end E of the protective sheet PSz, thereby peeling the entire protective sheet PSz from the panel S.

The hanging portion 600 has a hanging member 610 as shown in FIG. As shown in FIG. 3, the hanging member 610 is attached to the adhesive tape TP and is arranged below the protective sheet PSz that moves from the crimping tool 410 to the take-up reel 331.

The imaging unit 700 images the area where the protective sheet PSz of the panel S supported by the support unit 200 is attached before and after the peeling operation. The area to which the protective sheet PSz is attached is the above-mentioned gap area Ai, and it does not matter whether or not the protective sheet PSz is present at the time of imaging. The control device 800 controls each part of the peeling device 100.

The direction in which the crimping tool 410 moves to press the adhesive tape TP against the protective sheet PSz is the crimping direction, and the direction opposite to this is the initial peeling direction. The crimping direction and the initial peeling direction correspond to the directions along the Z direction in the drawing. In a plane parallel to the crimping surface 411, the direction in which the panel S is carried in at a position facing the crimping surface 411 is the carry-in direction, and the carry-out direction is the carry-out direction. The carry-in direction and the carry-out direction correspond to the directions along the X direction in the drawing. Further, in a plane parallel to the crimping surface 411, the direction in which the presser 510 is orthogonal to the carry-in direction and the carry-out direction and moves toward the peeling end E in order to peel the protective sheet PSz is set to the peeling operation direction and the peeling start end B. The direction of movement to return is the return direction. The peeling operation direction, the direction of relative movement for recovery is the crimping direction, and the direction corresponds to the direction along the Y direction in the drawing.

The peeling device 100 of the present embodiment is installed so that the crimping surface 411 is horizontal. Therefore, the crimping direction, the initial peeling direction, and the Z direction are vertical directions. In the following description, in the vertical direction, the installation surface side of the peeling device 100 is on the bottom and the opposite side is on the top. Further, the position in the Z direction may be referred to as height. However, the installation direction of the peeling device 100 is not limited to this. Further, as shown in FIG. 5, the position of the crimping surface 411 on the XY plane is defined as the crimping position AP. The crimping position AP is, for example, a position coordinate at which the crimping surface 411 in the coordinate system of the XY plane should hold the peeling start end B. However, this crimping position AP may be specified at one point, or may be specified at a plurality of points such as the four corners of a rectangle.

[Support]
As shown in FIG. 2, the support portion 200 includes a support column 211, a moving table 220, a drive mechanism 230, a stage 240, and a drive mechanism 250. The support column 211 is a member erected on a stand (not shown). The gantry is installed on the installation surface. The moving table 220 is a plate-like body parallel to the crimping surface 411, and is movably supported by the support column 221 in the crimping direction and the initial peeling direction. The drive mechanism 230 is a mechanism for moving the moving table 220 in the crimping direction and the initial peeling direction. As the drive mechanism 230, for example, a ball screw mechanism provided on the support column 221 and raised and lowered by a ball screw rotated by a drive source is used.

The stage 240 is a plate-like body having a mounting surface 241 that supports the back surface of the panel S. The mounting surface 241 is a surface parallel to the crimping surface 411. The mounting surface 241 is provided with a suction hole connected to a pneumatic circuit (not shown), and the panel S is sucked and held by a negative pressure. That is, the stage 240 has a vacuum chuck as a holding portion for holding the panel S. An electrostatic chuck or a mechanical chuck can also be used as the holding portion. The drive mechanism 250 is a mechanism for moving the stage 240 in two axial directions along the X direction and the Y direction. The drive mechanism 250 is composed of, for example, a two-axis mechanism in which linear guides for moving a slider by rotating a ball screw by a drive source such as a motor are provided in two stages in directions orthogonal to each other. By supporting the stage 240 on the moving table 220 via the drive mechanism 250, the panel S can be moved in the carry-in direction and the carry-out direction, and the protective sheet PSz can be positioned at the crimping position AP.

When the stage 240 presses the panel S and retracts it from the 510 after the adhesive tape TP is crimped by the crimping tool 410, the drive mechanism 230 operates in the initial peeling direction (lower side in the Z direction), and the drive mechanism 250. By combining the operations in the return direction (B side of the peeling start end in the Y direction), the movement moves diagonally downward.

[Supply / discharge mechanism]
As shown in FIG. 2, the supply / discharge mechanism 300 has a main body portion 310, a supply portion 320, and a discharge portion 330, and the adhesive tape TP is applied in the longitudinal direction of the rectangular protective sheet PSz attached to the panel S. It is a mechanism that supplies the crimping portion 400, which will be described later, in the direction of intersection. That is, the adhesive tape TP sent out from the supply unit 320 is supplied so as to be in contact with the crimping surface 411 of the crimping tool 410 in the direction orthogonal to the long side of the rectangular protective sheet PSz attached to the panel S. , Taken up by the discharge unit 330. The main body 310 is a plate having a substantially rectangular parallelepiped shape, and is erected on a pedestal (not shown) at a position adjacent to the support 200 via a drive mechanism 430 described later.

The supply unit 320 has a rotation shaft parallel to the Y direction, and has a supply reel 321 and a path roller 322 provided on the upper side of the main body unit 310. The supply reel 321 is a reel in which the adhesive tape TP is wound and the adhesive tape TP is sent out by rotation. The supply reel 321 is supported by a desired rotational resistance via a torque control device (not shown), and is provided so that the adhesive tape TP can be delivered by a predetermined length without slack according to the drive of the take-up reel 331 described later. Here, the desired rotational resistance via the torque control device is a rotational resistance that maintains the adhesive tape TP without slack against the adhesive force of the protective sheet PSz to the panel S in the initial peeling described later.

The path roller 322 guides the movement of the adhesive tape TP sent out from the supply reel 321 and changes the moving direction of the adhesive tape TP to send out the adhesive tape TP in the direction toward the crimping portion 400. The position of the shaft of the path roller 322 with respect to the main body 310 is fixed. An encoder is provided on the path roller 322, and the amount of adhesive tape TP delivered can be detected by counting the number of rotations.

The discharge unit 330 has a rotation shaft parallel to the Y direction, and has a take-up reel 331 and a path roller 332 provided below the supply unit 320. The take-up reel 331 is a reel that passes through the crimping portion 400 and winds up the adhesive tape TP to which the protective sheet PSz is crimped. The take-up reel 331 is provided so that the adhesive tape TP can be taken up by a predetermined length by rotating with a motor (not shown). As described above, the adhesive tape TP is sent out from the supply reel 321 by a predetermined length by this rotation. The path roller 332 guides the movement of the adhesive tape TP from the crimping portion 400, changes the moving direction, and sends it out to the take-up reel 331.

[Crimping part]
The crimping portion 400 includes a crimping tool 410, a guide portion 420, and a drive mechanism 430, as shown in FIGS. 2, 3 and 4. The crimping tool 410 is a substantially rectangular parallelepiped member arranged on the main body 310. The crimping tool 410 has a crimping surface 411. The crimping surface 411 is a rectangular flat surface that faces parallel to the stage 240 of the support portion 200. The long side of the pressure-bonded surface 411 is longer than the width of the adhesive tape TP, and the long side thereof is arranged along the Y direction. Further, as shown in FIG. 5, the length ws of the short side of the crimping surface 411 is preferably the short side of the protective sheet PSz, that is, the length of the width wt or less. This prevents the adhesive tape TP from coming into contact with the adjacent protective sheet PSx.

Further, as shown in FIGS. 1 and 5, the crimping surfaces 411 face each other so as to include the peeling start end B of the protective sheet PSz in a plan view. That is, instead of crimping so that the entire surface of the crimping surface 411 overlaps the protective sheet PSz, a part of the crimping surface 411 is crimped so as to protrude in the long side direction (Y direction) from the protective sheet PSz. At this time, the peeling start end B of the protective sheet PSz is positioned with respect to the crimping position AP, and the adhesive tape TP is crimped. Therefore, the crimping position AP in which the peeling start end B is positioned is set inside the crimping surface 411 in a plan view. Here, the center of the crimping surface 411 of the crimping tool 410 is set as the crimping position AP, and the adhesive tape TP has a width h of the adhesive tape TP of 15 mm in a state where the center of the width of the adhesive tape TP overlaps with the crimping position AP. In such a case, the peeling start end B of the protective sheet PSz is positioned and crimped with respect to the crimping position AP so that the width ht that adheres to the protective sheet PSz is about 10 mm and the width hs that does not adhere to the protective sheet PSz is about 5 mm.

As shown in FIG. 4, the guide portion 420 is continuously provided on the crimping tool 410 between the supply reel and the crimping tool 410, and regulates the displacement of the adhesive tape TP in the width direction. The guide portion 420 has a sliding surface 421 and a guide surface 422. The sliding surface 421 is a surface along the non-adhesive surface of the adhesive tape TP. The guide surface 422 is a pair of inner walls that are raised from the sliding surface 421 in the thickness direction of the adhesive tape TP and face each other with the adhesive tape TP interposed therebetween. By contacting both edges of the adhesive tape TP with the guide surface 422, the displacement of the adhesive tape TP in the width direction is restricted. As a result, the adhesive tape TP sent by the supply / discharge mechanism 300 can be stably run on the crimping surface 411. Further, since the guide portion 420 is a member common to the crimping tool 410, the number of members can be reduced, the configuration can be simplified, and the assembly man-hours can be reduced. Roundness is formed at the corner serving as the boundary between the guide surface 422 and the crimping surface 411 and the corner serving as the boundary between the side surface of the crimping tool 410 opposite to the guide surface 422 and the crimping surface 411. This prevents the adhesive tape TP from being damaged and makes the movement smooth.

As shown in FIG. 2, the drive mechanism 430 is a mechanism for moving the crimping tool 410 arranged in the main body 310 in the crimping direction and the initial peeling direction. The drive mechanism 430 is composed of, for example, a linear guide that rotates the ball screw by a drive source such as a motor and moves the main body 310 along the guide rail.

[Holding part]
As shown in FIG. 2, the pressing portion 500 has a pressing 510 and a drive mechanism 520. The presser 510 is a flat plate-shaped member parallel to the stage 240 of the support portion 200. In the present embodiment, the presser 510 moves only in the Y direction, does not move in the X and Z directions, and is fixed. As shown in FIG. 4, the presser 510 has a pressing portion 511, 512 and a peeling portion 513. The pressing portion 511 is a portion that presses the display area Ad of the panel S, and is hereinafter referred to as a first pressing portion. The pressing portion 512 is a portion that presses the connection region Ac of the panel S, and is hereinafter referred to as a second pressing portion. As shown in FIG. 10, the peeling portion 513 is a portion where the entire adhesive tape TP is peeled off while being in contact with the adhesive tape TP by moving the pressing 510 in the peeling operation direction.

As shown in FIG. 6, the first pressing portion 511 and the second pressing portion 512 overlap the panel S when the pressing portion 500 presses the panel S, but the peeling portion 513 does not overlap the panel S. The gap between the first pressing portion 511 and the second pressing portion 512 allows the crimping tool 410 including the crimping surface 411 and the adhesive tape TP to enter and exit (see FIG. 11).

The first pressing portion 511, the peeling portion 513, and the second pressing portion 512 of the pressing portion 510 of the present embodiment have a substantially U-shaped inner edge, that is, a rectangular shape with one side broken by being continuous. This continuous inner edge is called a concave notch 514. The side surface of the notch 514 is formed by a tapered surface 515 extending toward the support 200. As a result, when the adhesive tape TP enters the notch 514 together with the crimping tool 410, the area of the notch 514 in contact with the adhesive surface of the adhesive tape TP is reduced, so that the adhesive tape TP adheres to the side surface of the notch 514. It is unlikely that you will get caught by doing so. Further, by forming the first pressing portion 511, the peeling portion 513, and the second pressing portion 512 as one continuous member in this way, the configuration is as compared with the case where the pressing member and the peeling member are separately prepared. Simplification is possible. In order to prevent the panel S from floating, it is preferable that the display area Ad and the connection area Ac of the panel S are pressed by the first pressing portion 511 and the second pressing portion 512, but only one of them is available. You may. In this case, since the panel S floats from the outer edge side, only the pressing portion 512 may be used and only the outer edge side (connection area Ac side) of the panel S may be pressed.

Further, the surface of the presser 510 that does not come into contact with the panel S is subjected to a non-adhesive treatment to prevent the adhesive tape TP from sticking. For example, the surface of the presser 510 is coated with a non-adhesive coating made of resin. Of course, the entire surface of the presser 510 may be subjected to a non-adhesive treatment. Further, a protective tape is attached to the surface of the presser 510 in contact with the panel S to prevent the panel S and the protective sheet PSx from being damaged. For example, a tape mainly composed of polyimide is attached to the surface of the presser 510.

As shown in FIG. 6, the drive mechanism 520 inserts the peeling portion 513 between the protective sheet PSz whose one end has been peeled off and the panel S by moving the pressing 510 in the peeling operation direction, and from the panel S. The entire length of the protective sheet PSz, that is, the whole is peeled off (see FIG. 10). Further, the drive mechanism 520 moves the presser 510 in the return direction. The drive mechanism 520 uses, for example, a linear guide 522 that moves the arm 521 that supports the presser 510 along the guide rail by rotating the ball screw with a drive source such as a motor.

[Receiving part]
As shown in FIG. 2, the hanging portion 600 has a hanging member 610 and a drive mechanism 620. The hanging member 610 is a plate-shaped member arranged along the feeding direction of the adhesive tape TP. As shown in FIG. 3, the hanging member 610 has a plurality of inclined surfaces inclined upward from the horizontal plane adjacent to the holding portion 500, and further continuous horizontal planes. The hanging member 610 has a width longer than the total length of the protective sheet PSz, and is provided at a position along the path of the adhesive tape TP from the time of the pressing portion 500 to the position related to the outer shape of the take-up reel 331. There is. That is, the hanging member 610 has a shape that can receive the peeled protective sheet PSz until the adhesive tape TP is wound on the take-up reel 331. Since the main use of the hanging portion 600 is to prevent the peeled protective sheet PSz from adhering to the electronic component F, the protective sheet PSz that is peeled off and sent to the take-up reel 331 can adhere to the electronic component F. It suffices to have a length (the length in the feeding direction of the adhesive tape TP) that can cover at least a certain range. The drive mechanism 620 is a mechanism for moving the hanging member 610 in the vertical direction. For example, a cylinder is used as the drive mechanism 620. Therefore, when the panel S to which the electronic component F is connected is carried in, the hanging portion 610 can be retracted so that the hanging portion 610 does not come into contact with the electronic component F.

[Image pickup unit]
As shown in FIG. 2, the imaging unit 700 images the panel S supported by the support unit 200. The imaging unit 700 is supported by a support base (not shown) so that its position with the main body 310 is fixed. The imaging unit 700 images the gap region Ai before the protective sheet PSz is peeled off and the gap region Ai after the protective sheet PSz is peeled off. From this, it can be determined whether or not the peeling is normally performed. The imaging position by the imaging unit 700 is a common position positioned by the stage 240 before and after peeling.

The imaging unit 700 has a camera. The camera is a CCD camera having an optical member including a lens or the like, a CCD as an image sensor, and an image processing circuit that generates image data according to the amount of light received by the CCD. The camera takes an image by receiving the reflected light of the light from the light source. In the present embodiment, as the light source, for example, red illumination with a conspicuous boundary between the protective sheets PSx, PSy, and PSz is used.

[Control device]
As shown in FIG. 2, the control device 800 is a device that controls each part of the peeling device 100. The control device 800 can be configured by, for example, a dedicated electronic circuit, a computer operating with a predetermined program, or the like. That is, the control contents of the support unit 200, the supply / discharge mechanism 300, the crimping unit 400, the pressing unit 500, the hanging unit 600, and the imaging unit 700 are programmed and executed by a processing device such as a PLC or a CPU. To.

The configuration of such a control device 800 will be described with reference to FIG. 7, which is a block diagram. That is, the control device 800 includes a mechanism control unit 81, an image processing unit 82, a movement amount calculation unit 83, a movement instruction unit 84, a time determination unit 85, a winding instruction unit 86, a state determination unit 87, a storage unit 88, and input / output. It has a control unit 89. The mechanism control unit 81 includes a drive mechanism 230 of the support unit 200, a drive mechanism 250, a supply / discharge mechanism 300, a drive mechanism 430 of the crimping unit 400, a drive mechanism 520 of the pressing unit 500, a drive mechanism 620 of the hanging unit 600, and an imaging unit. Control 700.

The image processing unit 82 converts the image captured by the imaging unit 700 into an image suitable for display and position determination. The movement amount calculation unit 83 determines the position of the peeling start end B of the protective sheet PSz from the image processed by the image processing unit 82, and calculates the movement amount for moving to the crimping position AP. For example, the position coordinates of the line of the peeling start end B are determined based on the black and white binary image generated by the image processing unit 82.

This position coordinate is a position coordinate in the coordinate system of the XY plane in which the position coordinate of the crimping position AP is set. In this coordinate system, the position coordinates of the crimping position AP and the position coordinates of the imaging position of the imaging unit 700 are fixed, and the position coordinates in the image captured by the imaging unit 700 can be converted into the position coordinates of the coordinate system. Therefore, the movement amount calculation unit 83 can obtain the movement amount of XY from the position coordinates of the peeling start end B determined from the image to the position coordinates of the crimping position AP. The amount of deviation from the position coordinates of the previous crimping position AP may be obtained, and the corrected amount of movement may be obtained based on this amount of deviation.

The movement instruction unit 84 instructs the mechanism control unit 81 to drive the drive mechanism 250 of the support unit 200 according to the movement amount calculated by the movement amount calculation unit 83. As a result, even if the position of the panel S on the stage 240 varies, the peeling start end B can be accurately positioned at the crimping position AP.

The time determination unit 85 obtains the elapsed time from the time when the peeling device 100 stops the peeling operation based on the time acquired from the clock inside the control device 800, and whether or not the elapsed time exceeds the threshold value. Is determined. It should be noted that the determination as to whether or not the elapsed time exceeds the threshold value may be performed, for example, by whether or not the date has changed. The winding instruction unit 86 causes the supply / discharge mechanism 300 to perform an operation of winding and collecting the exposed portion of the adhesive surface of the adhesive tape TP when the elapsed time exceeds the threshold value. , Instruct the mechanism control unit 81. Regarding the amount of adhesive tape TP sent out by this winding, the portion of the path of the adhesive tape TP from the supply reel 321 to the crimping surface 411 where the adhesive surface is exposed and the elapsed time exceeds the threshold value is the crimping surface. The delivery amount is set in advance so as to deviate from 411. The delivery amount is detected by the encoder of the path roller 322. The delivery amount can be, for example, the length of the path length of the adhesive tape TP from the portion where the adhesive tape TP is separated from the supply reel 321 to the crimping surface 411 of the crimping tool 410.

The state determination unit 87 determines the state of the protective sheet PSz based on the image captured by the image pickup unit 700. That is, the state determination unit 87 determines the presence / absence of the protective sheet PSz, the difference from the normal shape, and the like based on the image processed by the image processing unit 82, and determines whether or not it is normal.

The storage unit 88 stores information necessary for controlling the present embodiment. For example, together with the above program, the above-mentioned image, the coordinate system and position coordinates for positioning the protective sheet PSz, the movement amount, the correction amount, and the time threshold value for the determination of the time determination unit 85. , The delivery amount of the adhesive tape TP and the like are stored in the storage unit 88. The input / output control unit 89 is an interface for controlling signal conversion and input / output with each unit to be controlled.

Further, an input device 91 and an output device 92 are connected to the control device 800. The input device 91 is an input means such as a switch, a touch panel, a keyboard, and a mouse for the operator to operate the peeling device 100 via the control device 800. The above threshold value and the like can be set by inputting a desired value from the input device 91.

The output device 92 is an output means such as a display, a lamp, a meter, a speaker, and a buzzer that makes information for confirming the state of the device recognizable by the operator. For example, the image captured by the imaging unit 700 is displayed on the display, and the operator can confirm the peeling of the protective sheet PSz. Further, when the time determination unit 85 determines that the elapsed time exceeds the threshold value, it is notified by voice from the display, the lamp, the speaker, and the buzzer that the adhesive strength of the adhesive tape TP has decreased. Will be done. That is, the output device 92 functions as a means for notifying the decrease in adhesive strength.

[motion]
The operation of the peeling device 100 will be described with reference to the flowchart of FIG. 8, the explanatory diagram of FIGS. 9 to 12, and the flowchart of FIG. 13 in addition to FIGS. 1 to 7. 9 and 10 are views of arrowhead M shown in FIG. 6, and FIGS. 11 and 12 are views of arrowhead N shown in FIG. In the following description, the position in the Z direction of the surface of the presser 510 facing the panel S is referred to as the reference position RP (see FIGS. 9 to 12).

(Adhesive tape set)
First, as shown in FIG. 2, the adhesive tape TP is set in the supply / discharge mechanism 300. That is, the wound adhesive tape TP is fitted into the supply reel 321. Then, the drawn adhesive tape TP is stretched so as to pass through the guide portion 420 of the crimping tool 410 via the path roller 322 and reach the take-up reel 331 from the position covering the crimping surface 411 via the path roller 332. Set up. Then, after the adhesive surface of the adhesive tape TP crimped to the protective sheet PSz is sent to the crimping surface 411 of the crimping tool 410 by the supply / discharge mechanism 300, the rotation of the supply reel 321 and the take-up reel 331 is stopped. Fix the movement of the adhesive tape TP.

(Imaging before peeling)
On the other hand, as shown in FIG. 1, in the panel S, the protective sheet PSx is peeled off from the connection region Ac in the previous step, and the electronic component F is connected. As shown in FIG. 2, this panel S is placed on the stage 240 and is attracted and held by negative pressure. Then, before the peeling operation of the protective sheet PSz, the imaging unit 700 images the gap region Ai of the panel S (step S101). The hanging member 610 is at an initial position at a height that does not come into contact with the electronic component F when the panel S to which the electronic component F is connected is carried in (see FIG. 11).

The movement amount calculation unit 83 determines the position coordinates of the peeling start end B from the captured image, and obtains the movement amount until the peeling start end B moves to the position facing the crimping surface 411 (step S102). The movement instruction unit 84 outputs a movement instruction according to the calculated movement amount to the mechanism control unit 81, so that the drive mechanism 250 of the support unit 200 moves the stage 240 in the mechanism control unit 81. As a result, as shown in FIGS. 9A and 11A, the peeling start end B of the protective sheet PSz is positioned at a position facing the crimping position AP of the crimping surface 411 (step S103).

The state determination unit 87 determines the state of the protective sheet PSz based on the image imaged by the image pickup unit 700 and processed by the image processing unit 82. If there is no protective sheet PSz, or if it is determined that the state of the protective sheet PSz is abnormal, the operator is notified by the display of the output device 92 or the like, and the panel S is ejected by the mechanism control unit 81. Let me. The notification to the operator may be a notification prompting the state determination of the protective sheet PSz by re-imaging.

(Initial peeling operation)
Next, as shown in FIGS. 9B and 11B, the main body 310 is lowered by the drive of the drive mechanism 430, and the crimping tool 410 provided in the main body 310 is also lowered and pressed. It enters the notch 514 of 510 and stops at a position where the adhesive surface of the adhesive tape TP covering the crimp surface 411 reaches the reference position RP (step S104). As a result, the surface of the presser 510 facing the panel S and the adhesive surface of the adhesive tape TP have the same height.

As shown in FIGS. 9C and 11C, the drive mechanism 230 raises the stage 240 of the support portion 200 toward the crimping portion 400, so that the panel S covers the pressing 510 and the crimping surface 411. It is pressed against the adhesive surface of the adhesive tape TP (step S105). As a result, the adhesive tape TP is pressure-bonded to the peeling start end B of the protective sheet PSz.

Then, as shown in FIGS. 9 (D) and 11 (D), the crimping tool 410 is raised by driving the drive mechanism 430, so that the peeling start end B of the protective sheet PSz crimped to the adhesive surface of the adhesive tape TP. Also rises, the peeling start end B of the protective sheet PSz is peeled from the panel S (initial peeling) (step S106). At this time, as shown in FIGS. 1 and 4, since the first pressing portion 511 and the second pressing portion 512 of the pressing 510 press the connection area Ac and the display area Ad, the panel S is prevented from rising. Will be done. In the present embodiment, as shown in FIGS. 9 (D) and 10, the protective sheet PSy is peeled off, so that a step with the protective sheet PSx is generated. If a problem occurs due to this step, a thick polyimide sheet or the like can be attached to the back surface of the second pressing portion 512 to eliminate the step.

(Overall peeling operation)
Next, as shown in FIG. 10A, the stage 240 of the support portion 200 moves diagonally downward, and the panel S is separated from the holding 510 (step S107). In this operation, when the panel S is pressed and separated from the 510 by moving only in the Z direction, the protective sheet PSz crimped to the adhesive tape TP is peeled from the adhesive tape TP due to the tension applied to the protective sheet PSz during peeling. This is to avoid the risk of spilling. That is, in order to hold down the panel S and separate it from the 510 without generating tension on the protective sheet PSz that is in the process of peeling, the Y direction and the Z direction are combined. Then, the pressing 510 is moved in the peeling operation direction by the drive mechanism 520 to peel the entire protective sheet PSz (step S108). Since the panel S is separated from the presser 510 by the movement of the stage 240, the presser 510 can be moved without contact with the panel S.

More specifically, as shown in FIG. 10B, the movement of the presser 510 causes the edge of the peeling portion 513 to come into contact with the protective sheet PSz. Then, as shown in FIG. 10C, the pressing 510 is continuously moved to advance the peeling. Then, as shown in FIG. 10 (D), the movement of the presser 510 is stopped when the peeling portion 513 of the presser 510 reaches the peeling end E. When the peeling portion 513 of the presser 510 reaches the peeling end E, the protective sheet PSz is peeled from the panel S over the entire length. At this time, the protective sheet PSz whose peeling start end B is adhered to the adhesive tape TP is in a state where the peeling end E is placed on the upper surface of the peeling portion 513. By the operation of the presser 510, the Z component of the tension of the protective sheet PSz applied to the portion where the protective sheet PSz and the adhesive tape TP are crimped can be reduced and peeled off. Therefore, the protective sheet PSz can be reliably peeled off from the panel S.

(Sending operation)
Next, as shown in FIG. 12A, the top-left member 610 descends from the initial position above the reference position RP (see FIG. 11) below the reference position RP (step S109). Then, as shown in FIG. 12B, by sending the adhesive tape TP by the supply / discharge mechanism 300, the peeling start end B adhered to the adhesive tape TP of the protective sheet PSz moves, and the peeling end E is peeled off at the same time. The protective sheet PSz moves above the hanging member 610 by sliding from the upper surface of the portion 513 to the upper surface of the second pressing portion 512 (see FIG. 10D) (step S110). In this way, as shown in FIG. 3, the adhesive tape TP is wound up on the take-up reel 331 and collected in a state where the peeling start end B, which is one end of the protective sheet PSz, is attached to the adhesive tape TP, and at the same time, the adhesive tape TP is adhered. The new adhesive surface of the tape TP comes to the area of the crimp surface 411. Then, the pressing 510 is moved in the return direction by the drive mechanism 520 and returns to the initial position. In the present embodiment, the protective sheet PSz is adhered to the adhesive tape TP in the direction orthogonal to each other and collected, but it does not have to be in the exact orthogonal direction.

(Image after peeling)
The drive mechanism 230 and the drive mechanism 250 of the support unit 200 move the stage 240 to the imaging position, and the imaging unit 700 images the gap region Ai of the panel S. When the state determination unit 87 determines that the protective sheet PSz remains or the like based on the captured image, it determines that it is not normal and notifies the operator to that effect by the display or the like of the output device 92.

The above operation is a procedure for peeling off the protective sheet PSz of one panel S. However, the panel S mounted on the stage 240 is replaced, and the protective sheet PSz of the panel S is sequentially peeled off by the above procedure. can do. In this way, the peeled protective sheet PSz is attached one after another with the end portion attached to the adhesive tape TP, and is wound up on the take-up reel 331 together with the adhesive tape TP and collected. To.

(Checking adhesive strength)
Next, an operation of checking the adhesive strength of the adhesive tape TP and eliminating the adhesive tape TP having a reduced adhesive strength will be described with reference to the flowchart of FIG. It is known that the adhesive strength of the adhesive tape TP may gradually decrease with the passage of time when continuously exposed to the air. Therefore, the time determination unit 85 measures the elapsed time from the stop of the operation to the start of the peeling operation to check the adhesive strength. That is, when the peeling operation is stopped and then the peeling operation is started next time, the time elapsed time from the time when the peeling operation is stopped is determined by the time determination unit 85 (step S201). When the determined time exceeds a predetermined threshold value (step S202), the supply / discharge mechanism 300 starts winding the adhesive tape TP according to the instruction of the winding instruction unit 86 (step S203). ..

When a predetermined amount of transmission is detected by the encoder (YES in step S204), delivery and winding are stopped (step S205). Here, the predetermined amount is, for example, the length of the path length of the adhesive tape TP from the portion where the adhesive tape TP is separated from the supply reel 321 to the crimping surface of the crimping tool. As a result, it is possible to avoid using the portion of the adhesive tape TP whose adhesive strength has decreased over time. For example, the portion of the adhesive tape TP that has been exposed for 24 hours after the adhesive surface is exposed can be prevented from being used.

[Action effect]
(1) The peeling device 100 of the present embodiment moves toward the support portion 210 that supports the panel S to which the rectangular protective sheet PSz is attached and the panel S, and the longitudinal direction is the longitudinal direction of the protective sheet PSz. A crimping tool 410 that peels off the protective sheet PSz from the peeling start end B by crimping the adhesive surface of the adhesive tape TP in the intersecting direction to the peeling start end B which is one end in the longitudinal direction of the protective sheet PSz and then separating from the panel S. And, a peeling device having.

With this configuration, the target protective sheet PSz can be efficiently peeled off by peeling from one end of the protective sheet PSz with the adhesive tape TP. For example, when peeling from a portion other than the end portion of the protective sheet PSz, since the adhesion at both ends continues, a stronger force is required and a peeling error is likely to occur. However, in the present embodiment, the peeling is performed from one end. , Subsequent peeling can be performed smoothly. Since only one end of the protective sheet PSz is attached to the adhesive tape TP and collected, the adhesive tape TP can be saved as compared with the case where the adhesive tape TP is attached and collected over the entire length of the protective sheet PSz.

(2) After crimping the crimping tool 410, the protective sheet PSz has a holding 510 that presses the panel S against the support portion 200 against the peeling of the peeling start end B of the protective sheet PSz due to the rise of the adhesive tape TP. Therefore, even if the panel S is supported by the support portion 200, it is prevented that the panel S is lifted or displaced following the peeling of the peeling start end B, and a peeling error is unlikely to occur. For example, even if a vacuum chuck is used as the holding portion, when the peeling start end B is peeled off, the panel S may be lifted or displaced due to the holding force of the holding portion. In the present embodiment, such a problem can be prevented by pressing the panel S by the pressing 510.

(3) The presser 510 keeps the space between the protective sheet PSz and the panel S created by peeling the peeling start end B in the direction toward the peeling end E on the side opposite to the peeling start end B of the protective sheet PSz. By moving relative to the panel S, the entire protective sheet PSz is peeled from the panel S. Therefore, the member that presses the panel S and the member that is peeled off can be shared, and the protective sheet PSz can be efficiently peeled off while simplifying the configuration.

(4) The hanging member 610 is arranged below the peeled protective sheet PSz that moves to a position separated from the crimping tool 410 according to the movement of the adhesive tape TP in the longitudinal direction. Therefore, it is possible to prevent the peeled protective sheet PSz from adhering to the panel S or other parts.

(5) A guide portion 420 that regulates the displacement of the adhesive tape TP in the lateral direction is provided in the vicinity of the crimping tool 410. Therefore, meandering of the adhesive tape TP and the like can be prevented, and the positional deviation with respect to the crimping position AP can be reduced.

(6) The panel S has an imaging unit 700 that captures the attachment position of the protective sheet PSz of the panel S supported by the support unit 200 before and after the peeling operation of the protective sheet PSz. As a result, it is possible to prevent the panel S from which the protective sheet PSz has already been peeled off from performing the peeling operation and the panel S from which the protective sheet PSz has not been peeled off from flowing to the next process.

(7) The subsequent adhesive tape TP is supplied to the crimping tool 410 by discharging the adhesive tape TP whose exposure time of the adhesive surface exceeds a predetermined threshold value from the crimping position AP by the crimping tool 410. It has a supply / discharge mechanism 300. Therefore, it is possible to prevent the use of the adhesive tape TP whose adhesive strength has been weakened and reduce the occurrence of peeling errors.

[Other Embodiments]
The present invention is not limited to the above embodiment, but also includes the following aspects.
(1) The panel S may be a substrate having a display area for a display device and a conductive portion such as a lead, and to which a protective sheet PS is attached. For example, a substrate having a display area that can be used now or in the future, such as a liquid crystal panel or an organic EL panel, may be used.

(2) The movement of the stage 240, the crimping tool 410, the presser 510, and the hanging member 610 may be relative movements. That is, the crimping of the protective sheet PSz to the adhesive tape TP by the crimping tool 410 to the peeling start end B is performed by moving both of the crimping tool 410 side and the stage 240 side. May be good. The pressing of the panel S by the pressing 510 may also be performed by moving the pressing 510 side, moving the stage 240 side, or moving both of them. The movement of the hanging member 610 with respect to the stage 240 may be performed by moving the stage 240 side, moving the hanging member 610 side, or moving both of them.

(3) Further, a suction device for sucking the adhesive tape TP may be provided on the crimping surface 411 of the crimping tool 410. That is, after the adhesive tape TP is delivered by the supply unit 320, the suction device is operated to suck the adhesive tape TP on the crimping surface 411 and crimp it. After that, the crimping tool 410 is raised to peel off the protective sheet PSz, and the suction of the suction device is released. According to such a configuration, when the protective sheet PSz is peeled off, the suction force by the suction device is also applied to raise the adhesive tape TP, so that the protective sheet PSz can be peeled off more strongly and the protective sheet PSz can be peeled off more reliably. Peeling is possible.

(4) In the present embodiment, the peeling of the protective sheet PSz has been described. However, when the protective sheet PSy is peeled off, the panel S so that the peeling start end of the protective sheet PSy faces the crimping position AP of the crimping surface 411. Similarly, if the protective sheet PSy is positioned, the protective sheet PSy can be peeled off.

Although the embodiment of the present invention and the modification of each part have been described above, the embodiment and the modification of each part are presented as an example, and the scope of the invention is not intended to be limited. These novel embodiments described above can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the invention described in the claims.

70 Imaging unit 81 Mechanism control unit 82 Image processing unit 83 Movement amount calculation unit 84 Movement instruction unit 85 Time determination unit 86 Winding instruction unit 87 State determination unit 88 Storage unit 89 Input / output control unit 91 Input device 92 Output device 100 Peeling device 200 Support 210 Support column 220 Moving table 230 Drive mechanism 240 Stage 241 Mounting surface 250 Drive mechanism 300 Supply / discharge mechanism 310 Main body 320 Supply section 321 Supply reel 322 Path roller 330 Discharge section 331 Winding reel 332 Path roller 400 Crimping section 410 Crimping tool 411 Crimping surface 420 Guide part 421 Sliding surface 422 Guide surface 430 Drive mechanism 500 Pressing part 510 Pressing part 511 First pressing part 512 Second pressing part 513 Peeling part 514 Notch 515 Tapered surface 520 Drive mechanism 521 Arm 522 Linear guide 600 Hanging unit 610 Hanging member 620 Drive mechanism 700 Imaging unit 800 Control device

Claims (7)

A support part that supports the display device panel to which a rectangular protective sheet is attached, and
After moving toward the display device panel and crimping the adhesive surface of the adhesive tape in a direction in which the longitudinal direction intersects the longitudinal direction of the protective sheet to the peeling start end which is one end in the longitudinal direction of the protective sheet, the said A crimping tool that peels the protective sheet from the peeling start end by moving away from the display panel,
A peeling device having. The peeling device according to claim 1, further comprising a presser that presses the display device panel against the support portion against peeling of the peeling start end by the crimping tool. The presser displays the space between the protective sheet and the display device panel created by peeling the peeling start end in a direction toward the peeling end on the side opposite to the peeling start end of the protective sheet. The peeling device according to claim 2, wherein the entire protective sheet is peeled from the display device panel by moving relative to the device panel. The invention according to any one of claims 1 to 3, wherein a hanging member is arranged below the protective sheet that moves away from the crimping tool according to the movement of the adhesive tape in the longitudinal direction. Peeling device. The peeling device according to any one of claims 1 to 4, further comprising a guide portion that regulates the displacement of the adhesive tape in the lateral direction in the vicinity of the crimping tool. Any of claims 1 to 5, further comprising an imaging unit that captures the attachment position of the protective sheet of the display device panel supported by the support unit before and after the peeling operation by the crimping tool. The peeling device according to. It has a supply / discharge mechanism for supplying the subsequent adhesive tape to the crimping tool by discharging the adhesive tape from the crimping position by the crimping tool when the time when the adhesive surface is exposed exceeds a predetermined threshold value. The peeling device according to any one of claims 1 to 6, characterized in that.

Images