Tractor and polaroid tearing device

Abstract

The utility model provides a tractor for tearing a polaroid and a polaroid tearing device, the tractor comprises a first flexible film layer, a second flexible film layer and a first adhesive layer, and the first flexible film layer is provided with a first surface and a second surface which are opposite to each other; the second flexible film layer is provided with a third surface and a fourth surface which are opposite, and the third surface is adjacent to the second surface; the first adhesive layer is located between the second surface of the first flexible film layer and the third surface of the second flexible film layer, and the first adhesive layer is used for fixing the first flexible film layer and the second flexible film layer; in the length direction of the tractor, the first flexible film layer has a first length, the second flexible film layer has a second length, the first adhesive layer has a third length, the first length is smaller than the second length, and the third length is smaller than the first length.

Description

Technical Field

[0001] The utility model relates to the display field, in particular to a tractor and a polarizer tearing device for assisting in tearing off a polarizer in a display panel manufacturing process. Background Art

[0002] With the development of science and technology, display panels are widely used in electronic products commonly used in life, such as car displays, laptops or mobile phones. Display panels usually include two substrates (one of which may also be a cover plate) and a display layer located between the two substrates. In order to further enhance the display effect, a polarizer may be attached to the side of the substrate away from the display layer. If the polarizer attachment quality is unqualified during the production process (for example, there are bubbles or dust after the polarizer is attached, or there are defects in the polarizer itself), rework is required. Specifically, the unqualified polarizer needs to be torn off and a new polarizer needs to be attached again.

[0003] At present, when tearing off a polarizer, an operator is usually required to first use a blade to separate one corner of the polarizer from the display panel, and then use, for example, masking tape to stick to the raised corner, so that the tape plays a traction role during the tearing process of the polarizer, and then use the polarizer tearing equipment to separate the polarizer to be torn off from the display panel as a whole. Since a piece of tape is required for each tearing off of a polarizer (in order to ensure the traction effect, the length of the tape is, for example, 50 cm), and the tape cannot be reused after tearing off, resulting in a waste of materials in the production process. At the same time, during the tearing process, the operator needs to manually tear off a piece of tape and stick it on the polarizer to be torn off, which is prone to problems such as glue residue and glue transfer, affecting the production yield.

[0004] Therefore, how to reduce material waste during polarizer tearing and improve production yield is an urgent problem to be solved. Utility Model Content

[0005] The utility model provides a tractor and a polarizing film tearing device to solve the above technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model proposes a puller for tearing off a polarizer, the puller comprising a first flexible film layer, a second flexible film layer and a first adhesive layer, the first flexible film layer having a first surface and a second surface opposite to each other; the second flexible film layer having a third surface and a fourth surface opposite to each other, the third surface being adjacent to the second surface; the first adhesive layer being located between the second surface of the first flexible film layer and the third surface of the second flexible film layer, the first adhesive layer being used to fix the first flexible film layer and the second flexible film layer; wherein, in the length direction of the puller, the first flexible film layer has a first length, the second flexible film layer has a second length, the first adhesive layer has a third length, the first length is smaller than the second length, and the third length is smaller than the first length.

[0007] As an optional technical solution, in the length direction of the traction device, the first flexible membrane layer has a first side and a second side that are opposite to each other, the second flexible membrane layer has a third side and a fourth side that are opposite to each other, the first side is adjacent to the third side, the second side is adjacent to the fourth side, the first side is flush with the third side, and the second side is not flush with the fourth side but has a first distance therebetween.

[0008] As an optional technical solution, one end of the first adhesive layer is adjacent to the first side edge of the first flexible film layer and the third side edge of the second flexible film layer, and the other end of the first adhesive layer is at a second distance from the fourth side edge, which is much greater than the first distance.

[0009] As an optional technical solution, in the width direction of the tractor, the first flexible film layer has a first width, the second flexible film layer has a second width, the first adhesive layer has a third width, the first width is equal to the second width, and the third width is less than or equal to the first width and the second width.

[0010] As an optional technical solution, the first adhesive layer includes a plurality of sub-adhesive layers extending along the length direction of the tractor, the plurality of sub-adhesive layers are arranged continuously along the width direction of the tractor, or the plurality of sub-adhesive layers are arranged at intervals along the width direction of the tractor.

[0011] In addition, the utility model also proposes a polarizer tearing device for tearing off the polarizer attached to the display panel. The polarizer tearing device includes a tractor, a carrier and a rolling assembly as described above. The carrier has a first sub-carrier and a second sub-carrier arranged at intervals; the rolling assembly is adjacent to the first sub-carrier and is located between the first sub-carrier and the second sub-carrier. The rolling assembly is rotatable relative to the first sub-carrier, and a first gap is provided between the rolling assembly and the first sub-carrier.

[0012] As an optional technical solution, the tractor has a first end and a second end relative to each other, the first flexible film layer and the second flexible film layer at the first end are fixed to each other via the first adhesive layer, and the first adhesive layer is not provided at the second end to separate the first flexible film layer and the second flexible film layer; when in use, the first flexible film layer and the second flexible film layer at the second end of the tractor clamp a torn corner of the polarizer.

[0013] As an optional technical solution, when the display panel is placed on the first sub-carrier, the polarizer faces the first sub-carrier, and the first end of the tractor is inserted into the first gap to be tightly clamped between the rolling assembly and the first sub-carrier. When the rolling assembly rotates, a force is applied to the tractor so that the tractor drives the polarizer to move and separate from the display panel.

[0014] As an optional technical solution, the first sub-carrier includes a carrying platform, which is used to carry the display panel with a polarizer attached, and the carrying platform forms a continuous carrying plane. Alternatively, the first sub-carrier includes a plurality of carrying rods, which are used to carry the display panel with a polarizer attached, and the plurality of carrying rods form a discontinuous carrying plane. The plurality of carrying rods are evenly arranged and rotatable relative to the first sub-carrier.

[0015] As an optional technical solution, the second sub-carrier includes a plurality of bearing rods, which are used to bear the display panel with the polarizer removed, and the plurality of bearing rods form a discontinuous bearing plane, and the plurality of bearing rods are evenly arranged and rotatable relative to the first sub-carrier.

[0016] The utility model provides a tractor and a polarizer tearing device for tearing off a polarizer. The tractor comprises a first flexible film layer and a second flexible film layer. At least parts of the first flexible film layer and the second flexible film layer are bonded together, and the first flexible film layer and the second flexible film layer in the remaining area are separable. When the polarizer on the display panel needs to be torn off, the operator lifts an angle of the polarizer from the display panel, separates the first flexible film layer from the second flexible film layer of the tractor to clamp the tilted angle of the polarizer, and drives the tractor by the polarizer tearing device to separate the polarizer from the display panel. After the tearing is completed, the tractor can be separated from the polarizer to wait for the next tearing operation. By repeatedly using the tractor, the material waste in the polarizer tearing process can be reduced, the pulling effect can be guaranteed, and the production yield rate is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0018] Figure 1 It is a structural schematic diagram of the tractor of the utility model;

[0019] Figure 2 It is an exploded schematic diagram of the tractor of the utility model;

[0020] Figure 3 It is a side view of the polarizer tearing device of the utility model;

[0021] Figure 4 It is a top view of the polarizer tearing device of the utility model. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the utility model, the utility model is further described below in conjunction with preferred embodiments and drawings. Similar components in the drawings are represented by the same reference numerals. Those skilled in the art should understand that the content described below is illustrative rather than restrictive, and should not be used to limit the scope of protection of the utility model.

[0023] Please refer to Figure 1 and Figure 2 , Figure 1 The figure shows a schematic diagram of the structure of the tractor of the utility model. Figure 2 The figure shows an exploded schematic diagram of the tractor of the utility model. Figure 1 and Figure 2 As shown, the utility model provides a puller 100 for tearing off a polarizer, which includes a first flexible film layer 10, a second flexible film layer 20 and a first adhesive layer 30, the first flexible film layer 10 has a first surface 11 and a second surface 12 opposite to each other, the second flexible film layer 20 has a third surface 21 and a fourth surface 22 opposite to each other, the third surface 21 is adjacent to the second surface 12, the first adhesive layer 30 is located between the second surface 12 of the first flexible film layer 10 and the third surface 21 of the second flexible film layer 20, the first adhesive layer 30 is used to fix the first flexible film layer 10 and the second flexible film layer 20, wherein, in the length direction of the puller 100, the first flexible film layer 10 has a first length L1, the second flexible film layer 20 has a second length L2, the first adhesive layer 30 has a third length L3, the first length L1 is smaller than the second length L2, and the third length L3 is smaller than the first length L1.

[0024] In one embodiment, in the length direction of the tractor 100, the first flexible film layer 10 has a first side 13 and a second side 14 opposite to each other, and the second flexible film layer 20 has a third side 23 and a fourth side 24 opposite to each other. The first side 13 is adjacent to and corresponds to the third side 23, and the second side 14 is adjacent to and corresponds to the fourth side 24. In the thickness direction of the tractor 100, the projection of the first side 13 is flush with the projection of the third side 23, that is, in the length direction of the tractor 100, the first side 13 is flush with the third side 23. Further, in the length direction of the tractor 100, one end of the first adhesive layer 30 is adjacent to the first side 13 of the first flexible film layer 10 and the third side 23 of the second flexible film layer 20, or even flush with each other. At the same time, in the length direction of the tractor 100, there may be a first distance between the second side 14 and the fourth side 24. There is a second distance between the other end of the first adhesive layer 30 and the fourth side 24, and the second distance is much greater than the first distance. That is to say, in the length direction of the tractor 100, there is a length difference between the first flexible film layer 10 and the second flexible film layer 20 of the tractor 100, and the first adhesive layer 30 is only located in a partial area between the first flexible film layer 10 and the second flexible film layer 20. The first adhesive layer 30 is not provided in the area where there is a length difference between the first flexible film layer 10 and the second flexible film layer 20 (the area adjacent to the second side 14 and the fourth side 24). Preferably, the second flexible film layer 20 is, for example, 30 cm, and the first flexible film layer 10 is, for example, 29.6 cm, that is, the difference between the second length L2 and the first length L1 is 0.4 cm. When the first side 13 is flush with the third side 23, the aforementioned first distance is 0.4 cm. The first adhesive layer 30 (third length L3) is, for example, 23 cm. When one end of the first adhesive layer 30 is flush with the third side 23, the second distance is equal to 7 cm, that is, about 77% of the first flexible film layer 10 and the second flexible film layer 20 are in a completely attached state, and the remaining 23% of the area is in a separable state.

[0025] The tractor 100 of the utility model is used to clamp the polarizer (the separated corner) when the operator separates a corner of the polarizer to be torn off from the display panel. Due to the length difference between the first flexible film layer 10 and the second flexible film layer 20 and the absence of the first adhesive layer 30 adjacent to the second side edge 14 / the fourth side edge 24, the operator can more conveniently separate the first flexible film layer 10 and the second flexible film layer 20 at this location, and clamp the first flexible film layer 10 and the second flexible film layer 20 at this location. On the side where the two opposite surfaces of the separated corner of the polarizer are located, the first flexible film layer 10 and the second flexible film layer 20 of the tractor 100 are used to clamp the corner of the polarizer, and the polarizer is stably clamped by static friction and the adhesion with the glue layer on the polarizer. Moreover, since nearly one-quarter of the tractor 100 clamps the polarizer (that is, the clamping area of ​​the two is large enough), the stability between the tractor 100 and the polarizer can be improved, thereby avoiding the separation of the tractor 100 and the polarizer during the tearing process.

[0026] In one embodiment, in the width direction of the tractor 100, the first flexible film layer 10 has a first width W1, the second flexible film layer 20 has a second width W2, and the first adhesive layer 30 has a third width W3, the first width W1 is equal to the second width W2, and the third width W3 is less than or equal to the first width W1 and the second width W2. In practical applications, the first width W1 and the second width W2 are, for example, 4 cm to improve the strength of the tractor 100. The first adhesive layer 30 includes a plurality of sub-adhesive layers (not shown) extending along the length direction of the tractor 100, and the plurality of sub-adhesive layers are continuously arranged along the width direction of the tractor 100, or the plurality of sub-adhesive layers are arranged at intervals along the width direction of the tractor 100. For example, the first adhesive layer 30 includes two sub-adhesive layers, the width of the sub-adhesive layer 31 is 1 cm, and the two sub-adhesive layers are continuously arranged along the width direction of the tractor 100 to form the first adhesive layer 30, and the third width W3 of the first adhesive layer 30 is 2 cm. Alternatively, the first adhesive layer 30 includes two sub-adhesive layers, the width of the sub-adhesive layer is 1 cm, and the two sub-adhesive layers are arranged at intervals along the width direction of the tractor 100, that is, there is a certain spacing between the two sub-adhesive layers (for example, 1 cm), so that the third width W3 of the entire first adhesive layer 30 formed by the two spaced sub-adhesive layers is 3 cm, so that the first flexible film layer 10 and the second flexible film layer 20 can be better bonded to avoid the first flexible film layer 10 and the second flexible film layer 20 being separated due to a large external force during the use of the tractor 100.

[0027] It should be noted that Figure 1 and Figure 2In the figure, the first flexible film layer 10, the second flexible film layer 20 and the first adhesive layer 30 are depicted in an exaggerated manner. In actual applications, the first flexible film layer 10 and the second flexible film layer 20 can use waste grid dust covers in the display panel manufacturing process, which improves the reuse rate of waste items and reduces material waste in the display panel production process. In line with the trend of circular economy, the first adhesive layer 30 can use textured adhesive. In the process of making the tractor 100, after the first flexible film layer 10 and the second flexible film layer 20 are fixed by the first adhesive layer 30, the preliminarily completed tractor 100 is heated and softened. The heating temperature is, for example, 60°C, so that the first flexible film layer 10, the second flexible film layer 20 and the first adhesive layer 30 can be fully integrated, thereby improving the stability and toughness of the tractor 100 and avoiding the tractor 100 from breaking or separating from the polarizer when the tractor 100 is used to tear off the polarizer.

[0028] Please refer to Figure 3 and Figure 4 , Figure 3 The figure shows a side view of the polarizer tearing device of the utility model. Figure 4 The figure shows a top view of the polarizer tearing device of the utility model. Figure 3 and Figure 4 As shown, the utility model also provides a polarizer tearing device 200 for tearing off the polarizer 400 attached to the display panel 300. The polarizer tearing device 200 includes the tractor 100, the platform 40 and the rolling assembly 50 as described above. The platform 40 has a first sub-platform 41 and a second sub-platform 42 arranged at intervals. The rolling assembly 50 is adjacent to the first sub-platform 41 and is located between the first sub-platform 41 and the second sub-platform 42. The rolling assembly 50 is rotatable relative to the first sub-platform 41, and a first gap 60 is provided between the rolling assembly 50 and the first sub-platform 41.

[0029] In one embodiment, the tractor 100 has a first end and a second end opposite to each other, the first end is adjacent to the first side 13 and the third side 23, and the second end is adjacent to the second side 14 and the fourth side 24. The first flexible film layer 10 and the second flexible film layer 20 at the first end are fixed to each other via the first adhesive layer 30, and the first adhesive layer 30 is not provided at the second end so that the first flexible film layer 10 and the second flexible film layer 20 are separated. When in use, the first flexible film layer 10 and the second flexible film layer 20 at the second end of the tractor 100 clamp the polarizer 400 (a torn corner), and the second surface 12 of the first flexible film layer 10 adjacent to the second side 14 and the third surface 21 of the second flexible film layer 20 adjacent to the fourth side 24 are tightly attached to the polarizer 400. When the display panel 300 is placed on the first sub-stage 41, the polarizer 400 faces the first sub-stage 41, and the first flexible film layer 10 and the second flexible film layer 20 at the first end of the tractor 100 are inserted into the first gap 60, so that the rolling assembly 50 and the first sub-stage 41 are tightly clamped on both sides thereof. At this time, the static friction force of the rolling assembly 50 on the tractor 100 when rotating can be used to drive the polarizer 400 to be continuously separated from the display panel 300.

[0030] It should be noted that Figure 3 and Figure 4 In the figure, the first gap 60 is drawn in an exaggerated manner. In actual applications, since the thickness of the polarizer 400 and the tractor 100 are relatively small, in order to ensure that the rolling assembly 50 can effectively generate static friction with the tractor 100 (and other areas of the polarizer 400 that are in contact with the rolling assembly 50 during the tearing process) when rotating, the first gap 60 also needs to be set smaller to be tightly clamped with the first sub-carrier 41 to ensure that the rolling assembly 50 can drive the polarizer 400 and the tractor 100 to move downward when rotating counterclockwise, thereby separating the polarizer 400 from the display panel 300.

[0031] In one embodiment, the first sub-stage 41 includes a carrying platform 411 for carrying the display panel 300 attached with the polarizer 400, and the carrying platform 411 forms a continuous carrying plane. The second sub-stage 42 includes a plurality of carrying rods 421 ( Figure 3 and Figure 4 Five carrying rods 421 are shown in the figure, but this is not limited to the actual application. The number of carrying rods 421 can be set according to the actual size of the display panel 300), which is used to carry the display panel 300 with the polarizer 400 torn off. The multiple carrying rods 421 form a discontinuous carrying plane, and the multiple carrying rods 421 are evenly arranged and rotatable relative to the first sub-carrier 41.

[0032] In actual applications, the structure of the first sub-stage 41 may also be the same as the structure of the second sub-stage 42, that is, the first sub-stage 41 also includes multiple supporting rods for supporting the display panel 300 attached with the polarizer 400, and the multiple supporting rods form a discontinuous supporting plane, and the multiple supporting rods are evenly arranged and rotatable relative to the supporting plane. The structure of the first sub-stage 41 can be selected according to the actual application situation, but is not limited to this.

[0033] In actual application, the operator first uses a blade to separate a corner of the polarizer 400 from the display panel 300, and then separates the first flexible film layer 10 and the second flexible film layer 20 in the area where the tractor 100 is not provided with the first adhesive layer 30, and then clamps the raised corner of the polarizer 400 with the separated first flexible film layer 10 and the second flexible film layer 20, that is, the second surface 12 of the first flexible film layer 10 and the third surface 21 of the second flexible film layer 20 contact the polarizer 400. Since the polarizer 400 is attached to the display panel 300 through the adhesive layer, it itself has viscosity, so that the tractor 100 can be attached to the raised corner of the polarizer 400. At this time, the operator can also press the tractor 100 to increase the adsorption force between the tractor 100 and the polarizer 400, and then place the display panel 300 downward on the first sub-stage 41. At this time, the polarizer 400 faces the first sub-stage 41, and the tractor 100 is pressed. The end of the tractor 100 away from the polarizer 400 is inserted into the first gap 60, and the rolling assembly 50 is controlled to rotate counterclockwise to apply a downward force to the tractor 100, so that the polarizer 400 is gradually separated from the display panel 300. In this process, the display panel 300 is driven to gradually move to the second sub-stage 42. When the display panel 300 is completely placed on the second sub-stage 42, the polarizer 400 is completely separated from the display panel 300, that is, what is on the second sub-stage 42 is the display panel 300 after the polarizer 400 is torn off. Since the polarizer 400 and the display panel 300 are attached together by the glue layer, part of the glue layer may remain on the display panel 300. At this time, the second sub-stage 42 is a structure of multiple bearing rods 421. The residual glue layer on the display panel 300 will not be transferred too much to the bearing rods 421, which can avoid subsequent problems such as glue residue and glue transfer, thereby improving the production yield of the display panel 300.

[0034] In summary, the utility model provides a tractor and a polarizer tearing device for tearing off a polarizer, the tractor comprises a first flexible film layer and a second flexible film layer, at least parts of the first flexible film layer and the second flexible film layer are bonded together, and the first flexible film layer and the second flexible film layer in the remaining area are separable. When it is necessary to tear off the polarizer on the display panel, the operator lifts a corner of the polarizer from the display panel, and separates the first flexible film layer and the second flexible film layer of the tractor to clamp the lifted corner of the polarizer, and uses the polarizer tearing device to drive the tractor to separate the polarizer from the display panel. After the tearing is completed, the tractor can be separated from the polarizer to wait for the next tearing operation. By reusing the tractor, the material waste in the polarizer tearing process can be reduced, the pulling effect can be guaranteed, and the production yield is improved.

[0035] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A tractor for tearing off a polarizer, characterized in that: The tractor includes: A first flexible film layer having a first surface and a second surface opposite to each other; A second flexible film layer has a third surface and a fourth surface opposite to each other, wherein the third surface is adjacent to the second surface; as well as A first adhesive layer is located between the second surface of the first flexible film layer and the third surface of the second flexible film layer, and the first adhesive layer is used to fix the first flexible film layer and the second flexible film layer; Wherein, in the length direction of the tractor, the first flexible film layer has a first length, the second flexible film layer has a second length, the first adhesive layer has a third length, the first length is smaller than the second length, and the third length is smaller than the first length.

2. The tractor according to claim 1, characterized in that: In the length direction of the tractor, the first flexible membrane layer has a first side and a second side relative to each other, the second flexible membrane layer has a third side and a fourth side relative to each other, the first side is adjacent to the third side, the second side is adjacent to the fourth side, the first side is flush with the third side, and the second side is not flush with the fourth side but has a first distance therebetween.

3. The tractor according to claim 2, characterized in that: One end of the first adhesive layer is adjacent to the first side edge corresponding to the first flexible film layer and the third side edge of the second flexible film layer, and the other end of the first adhesive layer opposite to the fourth side edge has a second distance which is much greater than the first distance.

4. The tractor according to claim 3, characterized in that: In the width direction of the tractor, the first flexible film layer has a first width, the second flexible film layer has a second width, the first adhesive layer has a third width, the first width is equal to the second width, and the third width is less than or equal to the first width and the second width.

5. The tractor according to claim 4, characterized in that: The first adhesive layer includes a plurality of sub-adhesive layers extending along the length direction of the tractor. The plurality of sub-adhesive layers are arranged continuously along the width direction of the tractor, or the plurality of sub-adhesive layers are arranged at intervals along the width direction of the tractor.

6. A polarizer tearing device for tearing off a polarizer attached to a display panel, characterized in that: The polarizer tearing device comprises: The tractor according to any one of claims 1 to 5; A carrier having a first sub-carrier and a second sub-carrier arranged at intervals; and The rolling component is adjacent to the first sub-carrier and is located between the first sub-carrier and the second sub-carrier. The rolling component is rotatable relative to the first sub-carrier, and a first gap is defined between the rolling component and the first sub-carrier.

7. The polarizer tearing device according to claim 6, characterized in that: The tractor has a first end and a second end opposite to each other. The first flexible film layer and the second flexible film layer at the first end are fixed to each other via the first adhesive layer, and the first adhesive layer is not provided at the second end so that the first flexible film layer and the second flexible film layer are separated. When in use, the first flexible film layer and the second flexible film layer at the second end of the tractor clamp a torn corner of the polarizer.

8. The polarizer tearing device according to claim 7, characterized in that: When the display panel is placed on the first sub-carrier, the polarizer faces the first sub-carrier, and the first end of the tractor is inserted into the first gap to be tightly clamped between the rolling assembly and the first sub-carrier. When the rolling assembly rotates, a force is applied to the tractor so that the tractor drives the polarizer to move and separate from the display panel.

9. The polarizer tearing device according to claim 6, characterized in that: The first sub-carrier includes a carrying platform, which is used to carry a display panel with a polarizer attached, and the carrying platform forms a continuous carrying plane. Alternatively, the first sub-carrier includes a plurality of carrying rods, which are used to carry a display panel with a polarizer attached, and the plurality of carrying rods form a discontinuous carrying plane. The plurality of carrying rods are evenly arranged and rotatable relative to the first sub-carrier.

10. The polarizer tearing device according to claim 6, characterized in that: The second sub-carrier comprises a plurality of bearing rods, which are used to bear the display panel with the polarizer removed, and the plurality of bearing rods form a discontinuous bearing plane. The plurality of bearing rods are evenly arranged and rotatable relative to the first sub-carrier.

Images