TWI752871B - Attachment device - Google Patents

Abstract

An attaching device is suitable for attaching a polarizing plate to a panel to define a first direction, a second direction and a third direction which are perpendicular to each other. The attachment device includes a machine base, a feeding unit, and a working unit. The feeding unit includes a first conveying member for conveying the polarizing plate along the first direction, and a second conveying member for conveying the panel along the second direction. The operation unit includes a stage that can move along the third direction, two control elements installed on both sides of the stage, a lamination plate completely attached to the polarizer and connected to the control elements, and A rolling piece for making the polarizer adhere to the panel by rolling along the second direction. With the arrangement of the laminating plate, the flatness of attaching the polarizing plate can be improved, so as to reduce the probability of poor attaching.

Description

Attachment device

The present invention relates to a production equipment, in particular to a sticking device for sticking a polarizing plate.

Referring to FIG. 1, an existing bias sticking device 91 is described, which is suitable for sticking a film 92 on a glass substrate 93, and a side surface of the film 92 is covered with a peelable release film 921, A left-right direction T and an up-down direction H perpendicular to the left-right direction T are defined. The biasing device 91 includes a conveying member 911 that can move along the left-right direction T and the up-down direction H and is suitable for conveying the film 92 , and a carrier suitable for placing the glass substrate 93 and located below the conveying member 911 . A stage 912, a plurality of first suction cups 913 disposed on the conveying member 911 and suitable for fixing the film 92, a second suction cup 914 disposed on the carrier 912 and suitable for fixing the glass substrate 93, a The bonding wheel 915 that moves along the left-right direction T and is suitable for tearing off the release film 921, and the two can move toward the film 92 along the up-down direction H, and can roll the film 92 along the left-right direction T. Roller 916.

Referring to FIG. 2 in conjunction with FIG. 1 , the use of the biasing device 91 will be described. First, The glass substrate 93 is placed on the stage 912 , and the glass substrate 93 is fixed by the suction force of the second suction cups 914 , and the diaphragm 92 is fixed on the glass substrate 92 by the suction force of the first suction cups 913 On the conveying member 911 , the conveying member 911 will move to the top of the stage 912 along the left-right direction T, and align the film 92 with the glass substrate 93 . During the attaching operation, the bonding wheel 915 is first bonded to the release film 921 of the film 92 , and moves along the left-right direction T to tear the release film 921 away from the film 92 .

Then the conveying member 911 will move toward the stage 912 along the up-down direction H, and the rollers 916 will move along the up-down direction H to the center of the film 92, one of the rollers 916 will first move from the The center of the diaphragm 92 moves along the left-right direction T, so that a part of the diaphragm 92 is attached to the glass substrate 93 first, and the other roller 916 is rolled along the left-right direction T to the other side, In order to attach another part of the film 92 to the glass substrate 93, the attaching operation is completed.

However, the first suction cups 913 of the biasing device 91 fix the diaphragm 92 in a manner of spaced distribution at multiple points. Therefore, when the diaphragm 92 itself is flexible, the diaphragm 92 may Some positions cannot be reliably supported, and the diaphragm 92 is likely to be warped and uneven, resulting in a problem of poor adhesion. In addition, in the method of attaching one part of the film 92 first, and then the other part of the film 92, there will be creases due to one of the rollers 916 pressing against the film 92 first, so that there will be sticking. In the case of initial bubbles, it is easy to produce defective products, resulting in poor production yield.

Therefore, the purpose of the present invention is to provide an attaching device that improves the flatness of attaching and reduces the generation of attaching bubbles.

Therefore, the attaching device of the present invention is suitable for attaching a polarizing plate to a panel. The polarizing plate includes a protective film covering the surface, defining a first direction, a second direction, and a perpendicular direction to each other. third direction. The attachment device includes a machine base, a feeding unit installed on the machine base, and an operation unit installed on the machine base.

The feeding unit includes a first conveying member suitable for conveying the polarizing plate along the first direction, and a second conveying member installed on the opposite side of the first conveying member and suitable for conveying the panel along the second direction Conveyor.

The operation unit includes a carrier which is located below the second conveying member and can move along the third direction, two control members which are respectively arranged at both ends of the carrier along the second direction at intervals, and a carrier suitable for complete A lamination plate attached to a side of the polarizing plate opposite to the protective film and both ends are respectively connected to the control elements, and a lamination plate installed between the stage and the lamination plate, and from one end of the lamination plate along the lamination plate Rolling in the second direction to make the polarizing plate adhere to the rolling member of the panel.

The effect of the present invention lies in the design that the polarizing plate can be completely fitted through the laminating plate, and the rolling element starts rolling at one end of the laminating plate without directly contacting the polarizing plate. , which can effectively improve the flatness of the polarizing plate during lamination, and reduce the creases caused by the polarizing plate being pushed against, so as to avoid the generation of sticking bubbles.

1: base

2: feeding unit

21: The first carrier

22: Second carrier

3: Working unit

31: Carrier

32: Controls

321: Adjustment axis

322: Pneumatic cylinder

33: Plywood

331: Grassroots

332: Adhesive layer

34: Rolled parts

35: Tear off

36: Alignment

4: polarizer

41: Protective film

5: Panel

D1: first direction

D2: Second direction

D3: third direction

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: FIG. 1 is a schematic diagram illustrating an existing partial sticking device; FIG. 2 is a schematic diagram illustrating the partial sticking device. Attachment method; FIG. 3 is a perspective view illustrating an embodiment of the attachment device of the present invention; FIG. 4 is a perspective view illustrating the connection relationship between the second control member and a laminating plate of the embodiment; FIG. 5 is a schematic diagram illustrating The relative relationship between a second conveying member, a stage and a polarizing plate in this embodiment; and FIG. 6 is a schematic view from a different perspective from that in FIG.

Referring to FIG. 3 , it is an embodiment of the attaching device of the present invention, which is suitable for attaching a polarizing plate 4 to a panel 5 . The polarizing plate 4 includes a protective film 41 covering the surface. This embodiment includes a stand 1 , a feeding unit 2 mounted on the stand 1 and suitable for transporting the polarizer 4 and the panel 5 , and a working unit 3 mounted on the stand 1 . In actual implementation, the polarizing plates are attached to the upper and lower sides of the panel 5 respectively. 4. However, in this embodiment, one side is attached as an example for description, and the other side is attached in the same manner, so it will not be repeated. In addition, this embodiment can also be applied to sticking a wide viewing angle film, an optical compensation film, an optical brightness enhancement film, a PE protective film, etc., which is not limited thereto.

A first direction D1, a second direction D2, and a third direction D3 that are perpendicular to each other are defined. Specifically, the machine base 1 is a platform extending along the first direction D1 and the second direction D2 , and is used for carrying the feeding unit 2 and the working unit 3 . The feeding unit 2 includes a first conveying member 21 suitable for conveying the polarizer 4 along the first direction D1, and a first conveying member 21 installed on the opposite side of the first conveying member 21 and suitable for conveying the polarizing plate 4 along the second direction D2 The second carrier 22 of the panel 5 is conveyed. Specifically, the first conveying member 21 and the second conveying member 22 use a vacuum negative pressure mechanism to fix the polarizing plate 4 and the panel 5 respectively. The electrostatic adsorption method can also be used, as long as the process of conveying It will not fall off easily.

The operation unit 3 includes a carrier 31 which is located below the second conveying member 22 and can move along the third direction D3, and two control units are respectively arranged along the second direction D2 at both ends of the carrier 31 at intervals. 32, a laminating plate 33 which is suitable for being completely attached to the polarizer 4 opposite to the protective film 41 and whose two ends are respectively connected to the control elements 32, a laminating plate 33 installed on the carrier 31 and the laminating plate 33 The rolling member 34 between the two, a tearing member 35 arranged at an interval from the second conveying member along the first direction D1, and a tearing member 35 located under the second conveying member 22 and movable along the second direction D2 Alignment piece 36 .

Referring to FIG. 4 in conjunction with FIG. 3 , the adhering board 33 is rectangular and has a The stages 31 are spaced apart and both ends are respectively mounted on the base layer 331 of the control elements 32 , and an adhesive layer 332 covering the base layer 331 away from the stage 31 and suitable for adsorbing the polarizer 4 . Each of the control elements 32 has an adjusting shaft 321 connected to one end of the base layer 331 and driven to adjust the tension of the base layer 331 , and two are respectively installed at both ends of the adjusting shaft 321 and can selectively apply a load For the pneumatic cylinders 322 of the adjustment shaft 321, in actual use, each of the control elements 32 can also use two electric motors to replace the pneumatic cylinders 322, as long as the operator can control the tension to adjust the tension. One end of each of the control elements 32 and the base layer 331 is fixed by means of screw locking, mainly to avoid the occurrence of one end of the base layer 331 when the adjusting shaft 321 is driven to adjust the tension of the base layer 331 The condition of disengaging the corresponding control member 32 .

In actual implementation, the base layer 331 is a plate made of stainless steel, and can also be made of metal aluminum, acrylic, ethyl phthalate, polypropylene, and polyethylene. limited. The adhesive layer 332 is a low-viscosity coating, which is mainly made of silicone material after molding and curing. It can also be selected to use PVC glue, OCA glue, AB mixed glue, rubber, etc. The material is not limited to this. In addition, it should be noted that the size of the area of the adhesive layer 332 can be adjusted according to the size of the selected polarizer 4 , and the polarizer 4 must be completely adhered to the adhesive layer 332 . It should be noted that the area of the adhesive layer 332 is usually smaller than the area of the base layer 331 because the adjustment shaft 321 is used to adjust the tension by winding and supporting the two ends of the base layer 331 respectively. reserved for such calls The size of the area required for the entire shaft 321 to wrap around both ends of the base layer 331 will prevent the adjustment shafts 321 from wrapping around the two ends of the adhesive layer 332 .

Referring to FIG. 6 , the rolling element 34 is a roller that rotates on its own axis, and can be driven by a driving mechanism to move between a starting position and an ending position along the second direction D2 . In the starting position, the rolling element 34 is located at one end of the adhering board 33 and presses against the adhering board 33, and in the ending position, the rolling element 34 is located at the other end of the adhering board 33, so that the The polarizing plate 4 is attached to the panel 5 . The driving mechanism is not the focus of the present invention, so it will not be described in detail here. It should be noted that, because the bonding plate 33 only relies on the force provided by the control members 32 to maintain the tension, and there is no other mechanism that can be rested, therefore, the rolling displacement speed of the rolling member 34 is the same as that of the pressing member 34. The force of the lamination plate 33 needs to match the tension value set by the control elements 32 to avoid the situation that the lamination plate 33 cannot be kept flat due to the displacement speed of the rolling element 34 being too fast or the force being too strong.

Referring to FIG. 3 again, the tear-off member 35 is a tear-off jig, and can move along the second direction D2 to tear off the protective film 41 of the polarizer 4, or it can be a self-adhesive roller, as long as it can be removed The protective film 41 can be torn off from the polarizing plate 4 . Specifically, the alignment member 36 is a CCD visual image alignment system, which mainly uses a CCD lens to capture the alignment mark of the polarizer 4 to obtain the actual position, and then compare with the standard position to obtain the actual position. Whether the polarizing plate 4 is offset on the laminating plate 33, so as to improve lamination precision.

Referring to FIGS. 5 and 6 , and in conjunction with FIG. 4 , when using this embodiment, the operator first fixes the two ends of the base layer 331 of the laminating board 33 on the control members 32 respectively, and sets the desired tension value respectively. Input the pneumatic cylinders 322, and the pneumatic cylinders 322 will drive the adjustment shafts 321 to wind the lamination plate 33, so that the base layer 331 and the adhesive layer 332 are in a taut state through tension, and the lamination plate 33 is completed. installation job. It should be added that the adhesive layer 332 of the laminating plate 33 can be completely attached to the polarizing plate 4 , and the flatness of the laminating plate 33 can be adjusted by cooperating with the control elements 32 , thereby reducing the warping of the polarizing plate 4 , and there is a problem of poor adhesion.

Next, the first conveying member 21 will convey the polarizing plate 4 along the first direction D1. During the process of conveying the polarizing plate 4 to the laminating plate 33, a process of cleaning the surface of the polarizing plate 4 will be carried out to avoid In the process of attaching, foreign objects may fall onto the polarizing plate 4 , thereby reducing the occurrence of defects in sticking foreign objects. When the polarizing plate 4 is placed on the adhesive layer 332 of the laminating plate 33 , the rolling element 34 is located under the base layer 331 of the laminating plate 33 and along the second direction from the starting position of one end of the base plate 331 D2 moves to the end position, so that the polarizing plate 4 is fixed on the adhesive layer 332 .

Next, as shown in FIG. 3 and FIG. 5 , the alignment member 36 moves above the polarizer 4 along the second direction D2 , and uses a lens to grab the alignment mark to confirm that the polarizer 4 is not in the position After the deviation, the tearing member 35 moves along the second direction D2 from the other side of the first direction D1 to tear off the protective film 41 of the polarizing plate 4, and the second conveying The member 22 moves the panel 5 to a fitting position along the second direction D2. It should be added that the adhesive force of the adhesive layer 332 to adhere to one surface of the polarizer 4 needs to be greater than the force of the tear-off member 35 to peel off the protective film 41 of the polarizer 4 to avoid tearing off the protective film During the process of 41, the polarizing plate 4 is taken away from the original fixed position. Finally, as shown in FIG. 6 , the stage 31 will move along the third direction D3 to move the polarizer 4 to the bonding position. The rolling member 34 rolls against the bonding plate 33 from the starting position along the second direction D2. When the rolling member 34 moves to the end position, the polarizing plate 4 is attached to the panel 5. And complete the bonding operation.

The bonding plate 33 is used for the attaching operation of the polarizing plate 4, in addition to providing the effect of adsorbing the polarizing plate 4 on the entire surface, the rolling member 34 is separated from the polarizing plate 4 by the base layer 331, When the rolling member 34 rolls the laminating plate 33 and attaches the polarizing plate 4 to the panel 5, it will not touch the polarizing plate 4 and provide a certain buffer protection, so that the polarizing plate 4 is not easy to There are creases, and the occurrence of bad air bubbles can be reduced.

To sum up, in this embodiment of the attaching device of the present invention, the polarizing plate 4 can be completely attached to the entire surface by the adhesive layer 332 of the attaching plate 33 , and the rolling member 34 is a part of the attaching plate 33 that presses against the attaching plate 33 . The base layer 331 is attached from one end of the base layer 331 . During the attachment operation, the polarizer 4 is attached to the panel 5 without directly contacting the polarizer 4 . , which can effectively improve the flatness of the polarizing plate 4 during lamination, and reduce the folds caused by the polarizing plate 4 being pressed against, thereby reducing the occurrence of defective air bubbles, which can effectively improve the lamination yield. Therefore, it is indeed possible to achieve the clear purpose.

However, the above are only examples of the present invention, and should not limit the scope of the present invention. All simple equivalent changes and modifications made according to the scope of the application for patent of the present invention and the contents of the patent specification are still within the scope of the present invention. within the scope of the invention patent.

1: base

2: feeding unit

21: The first carrier

22: Second carrier

3: Working unit

31: Carrier

32: Controls

33: Plywood

34: Rolled parts

35: Tear off

36: Alignment

4: polarizer

41: Protective film

5: Panel

D1: first direction

D2: Second direction

D3: third direction

Claims (5)

An attaching device suitable for attaching a polarizing plate to a surface, the polarizing plate comprising a protective film covering the surface, defining a first direction, a second direction, and a third direction that are perpendicular to each other , the attachment device includes: a base; a feeding unit, which is installed on the base, and includes a first conveying member suitable for conveying the polarizer along the first direction, and a feeding unit installed on the first The opposite side of the conveying element and suitable for conveying the panel along the second direction; and a working unit, mounted on the machine base, and comprising a The stage that moves in the third direction, two control elements that are spaced apart at both ends of the stage along the second direction, one is suitable for being completely attached to a surface of the polarizer opposite to the protective film, and the two ends are respectively A lamination plate connected to the control elements, and a roller installed between the carrier and the lamination plate, and rolled from one end of the lamination plate along the second direction to make the polarizer adhere to the panel Press parts. The attaching device according to claim 1, wherein the laminating board has a base layer spaced from the carrier and having two ends respectively mounted on the control members, and a base layer covering the base layer away from the carrier One side, and is suitable for adsorbing the adhesive layer of the polarizing plate. The attachment device as claimed in claim 2, wherein each of the control elements has an adjustment shaft connected to one end of the base layer and driven to adjust the tension of the base layer, and two are respectively installed at both ends of the adjustment shaft , and optionally A pneumatic cylinder that applies a load to the adjustment shaft. The attachment device according to claim 1, wherein the operation unit further comprises a spaced apart from the second conveying member along the first direction, and is suitable for moving along the second direction to tear off the polarizing plate The tear-off part of the protective film. The attaching device according to claim 1, wherein the operation unit further comprises a device located under the second conveying member and capable of moving along the second direction, and suitable for detecting the alignment of the alignment marks of the polarizing plate pieces.

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