CN110989057A - Warp control device and method for controlling warp of optical film - Google Patents

Warp control device and method for controlling warp of optical film Download PDF

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Publication number
CN110989057A
CN110989057A CN201911167282.3A CN201911167282A CN110989057A CN 110989057 A CN110989057 A CN 110989057A CN 201911167282 A CN201911167282 A CN 201911167282A CN 110989057 A CN110989057 A CN 110989057A
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China
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roller
positioning roller
positioning
control device
optical film
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CN201911167282.3A
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CN110989057B (en
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陈汉彬
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Sumika Technology Co Ltd
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Sumika Technology Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)

Abstract

The present disclosure provides a warpage-controlling apparatus and a method of controlling warpage of an optical film. The warp control device includes: first stop gear, first movable roller and first positioning roller. The first movable roller is arranged on the first limiting mechanism, and the first positioning roller is arranged close to the first limiting mechanism. The first movable roller moves with the first positioning roller as an axis.

Description

Warp control device and method for controlling warp of optical film
Technical Field
An apparatus and method for conditioning an optical film, and more particularly, to an apparatus and method for controlling warpage of an optical film.
Background
Optical films are widely used for various articles in daily life, for example, an anti-glare material for lamps, a window heat-insulating material, a filter material for digital cameras, a flat panel display, and the like. The flat panel display is one of the most important industries in recent years, and the production value of the liquid crystal display accounts for most of the flat panel display industries.
The optical film applied to the liquid crystal display is in a wide variety of types, and as the liquid crystal display is frequently applied to various precision electronic products, such as mobile phones, wearable devices, computers, and the like, the industrial demand for the quality of the optical film is increasing.
Most of optical films applied to displays have a multi-layer structure, and are formed by bonding a plurality of film layers made of different materials. However, after the optical film having a multilayer structure is attached, stress is applied between the layers due to the difference in tension between the layers, which causes warpage of the optical film.
Disclosure of Invention
According to some embodiments of the present disclosure, there is provided a warpage control apparatus, including: first stop gear, first movable roller and first positioning roller. The first movable roller is arranged on the first limiting mechanism, the first positioning roller is arranged close to the first limiting mechanism, and a first distance is formed between the first movable roller and the first positioning roller; and the second positioning roller is separated from the first positioning roller by a second distance, and the first movable roller moves by taking the first positioning roller as an axis.
According to some embodiments of the present disclosure, there is provided a method of controlling warpage of an optical film, comprising: providing an optical film; the optical film is guided to a warp control device. The warp control device includes: the first limiting mechanism, a first movable roller arranged on the first limiting mechanism, a first positioning roller arranged on the downstream of the first movable roller, and a second positioning roller arranged on the downstream of the first positioning roller. The method for controlling warpage of an optical film also includes: and moving the first movable roller to a working position by taking the first positioning roller as an axis to contact the optical film, wherein the optical film is in contact with the first positioning roller and the second positioning roller, and a second wrap angle is formed on the first positioning roller, and the range of the second wrap angle is 0-220 degrees.
In order to make the features and advantages of the present disclosure comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 illustrates a schematic structural view of a warp control device according to some embodiments of the present disclosure;
FIG. 2 illustrates a schematic structural diagram of a warp control device in accordance with some embodiments of the present disclosure;
FIG. 3 illustrates a schematic structural diagram of a warp control device in accordance with some embodiments of the present disclosure;
FIG. 4 illustrates a schematic structural diagram of a warp control device in accordance with some embodiments of the present disclosure;
FIGS. 5A-5C are schematic diagrams illustrating a warp control device during operation according to some embodiments of the present disclosure.
[ notation ] to show
10. 20, 30, 40, 50 warpage control means;
100 an optical film;
100A, 100B surfaces;
102a first movable roller;
102b a second movable roller;
104a first positioning roller;
104b a second positioning roller;
200a first limiting mechanism;
200b a second limiting mechanism;
CT1、CT2a geometric center;
CL1、CL2connecting wires;
D1a first distance;
D2a second distance;
D3a third distance;
D4a fourth distance;
P1a first position;
P2a second position;
Pian idle position;
Pwa working position;
r1、r2、r3、r4a diameter;
θ1a first holding angle;
θ2a second holding angle;
θAan effective operating angle;
θiand (4) an included angle.
Detailed Description
The warpage-controlling device according to the embodiment of the present disclosure and the method for controlling warpage of an optical film using the same are described in detail below. It is to be understood that the following description provides many different embodiments, or examples, for implementing different aspects of embodiments of the disclosure. The specific components and arrangements are described below to provide a simple and clear description of certain embodiments of the disclosure. These are, of course, merely examples and are not intended to be limiting. Moreover, similar and/or corresponding reference numerals may be used to identify similar and/or corresponding elements in different embodiments to clearly describe the present disclosure. However, the use of such similar and/or corresponding reference numerals is merely for simplicity and clarity in describing some embodiments of the present disclosure and does not represent any correlation between the various embodiments and/or structures discussed.
It should be understood that the elements of the drawings or devices may take various forms well known to those skilled in the art to which the invention pertains. Relative terms, such as "lower" or "bottom" or "upper" or "top," may be used in addition embodiments to describe a relative relationship of one element to another element of the figures. It will be understood that if the device of the drawings is turned over and upside down, elements described as being on the "lower" side will be elements on the "upper" side. The embodiments of the present disclosure can be understood together with the accompanying drawings, which are incorporated in and constitute a part of this specification. It should be understood that the drawings of the present disclosure are not drawn to scale and that, in fact, the dimensions of the elements may be arbitrarily increased or reduced to clearly illustrate the features of the present disclosure.
Furthermore, the elements or devices of the drawings may exist in a variety of forms well known to those of ordinary skill in the art to which the invention pertains. Further, it should be understood that although the terms first, second, third, etc. may be used herein to describe various elements, components, or parts, these elements, components, or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present disclosure.
As used herein, the term "about," "substantially," "approximately" generally refers to within 20%, preferably within 10%, more preferably within 5%, or within 3%, or within 2%, or within 1%, or within 0.5% of a given value or range. The amounts given herein are approximate, that is, the meanings of "about", "substantially" and "approximately" may be implied without specifically stating "about", "substantially" and "approximately". Furthermore, the terms "in a range of a first value to a second value" and "in a range of a first value to a second value" mean that the range includes the first value, the second value, and other values therebetween.
In some embodiments of the present disclosure, terms such as "connected," "interconnected," and the like, with respect to bonding, connecting, and the like, may refer to two structures being in direct contact, or may also refer to two structures not being in direct contact, unless otherwise specified, with respect to the structure between which they are disposed. And the terms coupled and connected should also be construed to include both structures being movable or both structures being fixed.
Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
In order to improve or correct the warpage of the optical film, a possible method includes peeling off a surface film layer of the optical film that has generated warpage to release stress, and attaching again using a new replacable film. Alternatively, a warp-leveling roller may be used to apply stress to the surface of the optical film to relieve stress within the structure. However, replacing the optical film again results in a large amount of discarded optical films, which is costly, the applicable direction and angle range of the warp correction roller is limited, and when the arrangement relationship between the optical film and the roller is to be changed, the optical film must be cut and passed through again, but the requirement cannot be completely met.
The embodiment of the disclosure provides a warpage control device, which comprises a warpage adjusting roller capable of moving in various directions and angles, so that the warpage control device can instantly and simply adjust the stress applied to an optical film by the warpage adjusting roller according to the characteristics of different optical films, thereby improving the warpage of the optical film. In addition, according to some embodiments of the present disclosure, the warpage-controlling device may further include a rotatable positioning roller, so that the arrangement direction of the optical film on the roller may be simply switched, and the steps of cutting the optical film and re-passing the optical film may be omitted.
FIG. 1 illustrates a schematic diagram of a warp control device 10 according to some embodiments of the present disclosure. It should be understood that additional features may be added to the warp control device 10 described below, according to some embodiments. In addition, the X-axis and the Y-axis in the drawings are for convenience of explaining the operation of the warp control device 10.
In some embodiments, the warp control device 10 can be used to adjust the degree of warp of the optical film 100. The optical film 100 may be a single layer optical film or an optical film laminate. In some embodiments, the optical film 100 processed by the optical film processing apparatus 10 is in the form of a roll.
In some embodiments, the warpage-controlling device 10 can be disposed downstream of a bonding roller (not shown) for bonding a plurality of optical films. In some embodiments, the warp control device 10 may be disposed downstream of a drying oven (not shown). It should be understood that the warpage control apparatus 10 can be disposed at any stage of the optical film process that is prone to warpage or deformation according to actual requirements.
In addition, in some embodiments, the optical film 100 may be a single-layer or multi-layer film, which includes films that are beneficial for optical gain, alignment, compensation, turning, cross-polarization, diffusion, protection, anti-sticking, scratch-resistant, anti-glare, reflection inhibition, high refractive index, etc., for example, various surface-treated films such as a polarizing film, a release film, a wide-angle cornea, a brightness enhancement film, a reflection film, a protection film, an alignment liquid crystal film with characteristics of controlled viewing angle compensation or birefringence (birefringence), a hard coat film, an anti-reflection film, an anti-sticking film, a diffusion film, an anti-glare film, etc., or a combination thereof, but is not limited thereto.
In some embodiments, the optical film 100 may include two protective layers and a polarizing film sandwiched between the protective layers.
In some embodiments, the protective film may have a single-layer or multi-layer structure, and is a thermoplastic resin with excellent transparency, mechanical strength, thermal stability, moisture barrier property, and the like. The thermoplastic resin may include a cellulose resin (e.g., triacetate cellulose (TAC) or diacetate cellulose (DAC)), an acrylic resin (e.g., poly (methyl methacrylate), PMMA), a polyester resin (e.g., polyethylene terephthalate (PET) or polyethylene naphthalate), an olefin resin, a polycarbonate resin, a cyclic olefin resin, an oriented-stretched polypropylene (OPP), a Polyethylene (PE), a polypropylene (PP), a Cyclic Olefin Polymer (COP), a Cyclic Olefin Copolymer (COC), or a combination of the foregoing, in some embodiments, the material of the protective film may include a thermosetting resin such as a (meth) acrylic, urethane, acrylic urethane, epoxy, silicone, or uv-curable resin, the protective film may be further subjected to a surface treatment such as an anti-glare treatment, an anti-reflection treatment, a hard coat treatment, a charge prevention treatment, or an anti-stain treatment.
In some embodiments, the polarizing film may be formed of a polyvinyl alcohol (PVA) film adsorbing aligned dichroic pigments or of a liquid crystal material doped with absorption dye molecules. Polyvinyl alcohol can be formed by saponifying polyvinyl acetate. In some embodiments, the polyvinyl acetate may be a homopolymer of vinyl acetate or a copolymer of vinyl acetate and other monomers, and the like. The other monomer may be an unsaturated carboxylic acid, an olefin, an unsaturated sulfonic acid, a vinyl ether, or the like. In other embodiments, the polyvinyl alcohol may be a modified polyvinyl alcohol, such as aldehyde-modified polyvinyl formaldehyde, polyvinyl acetaldehyde, polyvinyl butyral, or the like.
Referring to fig. 1, the warpage control apparatus 10 may include a first limiting mechanism 200a, a first movable roller 102a and a first positioning roller 104 a. The first movable roller 102a is mounted on the first position-limiting mechanism 200a and can move on a path or track defined by the first position-limiting mechanism 200 a. In some embodiments, the first movable roller 102a may be moved to a specific position according to the property or process requirement of the optical film 100, so that the first movable roller 102a applies an appropriate tension on the optical film 100. Further, in some embodiments, the position of the first limiting mechanism 200a may overlap with the travel route of the optical film 100.
Further, the first positioning roller 104a may guide the traveling direction of the optical film 100. The first positioning roller 104a is disposed adjacent to the first limiting mechanism 200 a. In some embodiments, the first positioning roller 104a is disposed downstream of the first movable roller 10. In some embodiments, the first positioning roller 104a may be disposed inside the first position-limiting mechanism 200a when viewed from a side view of the optical film 100 (i.e., from a view perpendicular to the transport direction of the optical film 100, such as the X-Y plane shown in the figures). In addition, the first movable roller 102a can move on the first position-limiting mechanism 200a with the first positioning roller 104a as an axis (positioning shaft). In some embodiments, the geometric center CT of the first positioning roller 104a and the first position-limiting mechanism 200a1And (4) overlapping.
The first movable roller 102a and the first positioning roller 104a are separated by a first distance D1. In some embodiments, the first distance D1May range from about 30mm to about 500mm, from about 50mm to about 300mm, or from about 100mm to about 150 mm. It should be noted that if the first distance D is1Too large (e.g., greater than 500mm) or too small (e.g., less than 30mm), a burden on mechanical design or manufacturing costs may result.
Further, according to some embodiments, the first distance D1May be defined as the distance between the center of the first movable roller 102a and the center of the first positioning roller 104 a. According to further embodiments, the first distance D1May be defined as the minimum distance between the first movable roller 102a and the first positioning roller 104 a.
In some embodiments, the first spacing mechanism 200a may include a track, a turntable, a locating pin and hole, other suitable spacing mechanisms, or a combination of the foregoing. In some embodiments, the first movable roller 102a can be fixed to the first position-limiting mechanism 200a, and the first movable roller 102a can be moved by changing the position of the first position-limiting mechanism 200 a. For example, in some embodiments, the first movable roller 102a can be moved to a specific position by rotating the first limiting mechanism 200 a. In other embodiments, the position of the first position-limiting mechanism 200a is not changed, and the first movable roller 102a itself can move in the first position-limiting mechanism 200 a.
In some embodiments, the diameter r of the first movable roller 102a1May range from about 75mm to about 125mm, from about 80mm to about 110mm, or from about 90mm to about 110 mm. In some embodiments, the diameter r of the first positioning roller 104a2May range from about 75mm to about 125mm, from about 80mm to about 110mm, or from about 90mm to about 110 mm. Diameter r of the first movable roller 102a1May be matched with the diameter r of the first positioning roller 104a2The same or different.
In some embodiments, the material of the first movable roller 102a and the first positioning roller 104a may comprise stainless steel, titanium alloy, or a combination thereof. Examples of the stainless steel include, but are not limited to, SUS304L, SUS309S, SUS310S, SUS311, SUS314, SUS321, SUS345, SUS348, SUS403, SUS410, SUS405, SUS406, SUS410, SUS414, SUS430, SUS330F, SUS431, SUS440A to C, SUS442, SUS443, SUS446, SUS447JI, SUS630, SUS JIS35, SUS XM 27, SHOMAC30-2, SEA-CURE, HR-8N, SUS316, SUS 316L, SUS317 SUS317, SUS317L, SUS316J1, 316J2, CARPENTER 20, and MONIT.
In some embodiments, the wheel surface of the first movable roller 102a and/or the first positioning roller 104a may be mirror polished or coated with a coating, wherein the coating may comprise chrome metal or other non-metallic materials, such as ceramic, teflon, silicone, etc. The main reasons for the existence of the coating layer are to prevent the film surface from being scratched, to prevent electrostatic adsorption, to prevent abrasion of the roller, etc., and the choice of the material is not limited to the above, and it is preferable that the optical film surface is not scratched.
As shown in fig. 1, in some embodiments, the warp control device 10 further comprises a second positioning roller 104 b. The second positioning roller 104b may further guide the traveling direction of the optical film 100. In some embodiments, the second positioning roller 104b is disposed downstream of the positioning roller 104 a. In some embodiments, the second positioning roller 104b may partially overlap the first spacing mechanism 200 a.
The second positioning roller 104b is separated from the first positioning roller 104a by a second distance D2. In some embodiments, the second distance D2May range from about 30mm to about 500mm, from about 50mm to about 300mm, or from about 100mm to about 150 mm. It should be noted that if the second distance D is less than the first distance D2Too large (e.g., greater than 500mm) or too small (e.g., less than 30mm), a burden on mechanical design or manufacturing costs may result.
Further, according to some embodiments, the second distance D2May be defined as the distance between the center of the first positioning roller 104a and the center of the second positioning roller 104b, or the minimum distance between the center of the first positioning roller 104a and the second positioning roller 104 b.
In some embodiments, the first distance D between the first movable roller 102a and the first positioning roller 104a1May be substantially equal to a second distance D between the first positioning roller 104a and the second positioning roller 104b2. In some embodiments, the first distance D1At a second distance D2Has a proportional relationship with the first distance D1At a second distance D2The ratio of (A) to (B) is 0.5: 1-1: 1.5. For example, in some embodiments, the second positioning roller 104b may be away from the first position-limiting mechanism 200a and not overlap with the first position-limiting mechanism 200 a.
In some embodiments, the diameter r of the second positioning roller 104b3May range from about 75mm to about 125mm, from about 80mm to about 110mm, or from about 90mm to about 110 mm. Furthermore, the diameter r of the second positioning roller 104b3Can be matched with the diameter r of the first movable roller 102a1And/or the diameter r of the first positioning roller 104a2The same or different.
Moreover, the material of the second positioning roller 104b may be the same as or similar to the material of the first movable roller 102a and/or the first positioning roller 104b, and thus is not repeated here.
In addition, as shown in fig. 1, the optical film 100 may sequentially pass through the first movable roller 102a, the first positioning roller 104a and the second positioning roller 104 b. Specifically, the optical film 100 contacts the first movable roller 102a and the first positioning roller 104a, and the optical film 100 extending over the first movable roller 102a forms a first angle of wrap θ on the first movable roller 102a1. In some embodiments, the first angle of wrap θ1May range from about 0 degrees to about 220 degrees, from about 5 degrees to about 180 degrees, or from about 30 degrees to about 160 degrees.
According to some embodiments, the first angle of wrap θ1It means that an angle is formed between a tangent line of a contact point of the optical film 100 with the first movable roller 102a on an upstream side in a conveyance direction (an arrow direction indicated by the optical film 100 in the drawing) and a tangent line of a contact point of the optical film 100 with the first movable roller 102a on a downstream side in the conveyance direction in a state where the optical film 100 is in contact with the conveyance surface of the first movable roller 102a when viewed from a direction of a central axis of the first movable roller 102a (i.e., from a side view of the first movable roller 102a, such as an X-Y plane shown in the drawing).
Similarly, the optical film 100 contacts the first positioning roller 104a and the second positioning roller 104b, and the optical film 100 extending on the first positioning roller 104 can form a second angle θ on the first positioning roller 1042. In some embodiments, the second angle of inclination θ2May range from about 0 degrees to about 220 degrees, from about 5 degrees to about 180 degrees, or from about 30 degrees to about 160 degrees.
According to some embodiments, the second angle of inclination θ2Means that the optical film 100 is in its conveying direction (optical direction in the figure) in a state where the optical film 100 is in contact with the conveying surface of the first positioning roller 104a when viewed from the direction of the central axis of the first positioning roller 104a (i.e., from the side view of the first positioning roller 104a, e.g., the X-Y plane shown in the figure)The direction of the arrow indicated by the film 100) and the tangent line of the contact point of the upstream side of the optical film 100 with the first positioning roller 104a, and the tangent line of the contact point of the downstream side of the optical film 100 in the conveying direction thereof with the first positioning roller 104 a.
As shown in fig. 1, the first movable roller 102a can move to different positions, and the first angle of approach θ is different according to the position of the first movable roller 102a1And a second angle of wrap theta2There will be variations. For example, in some embodiments, the first movable roller 102a can move to the first position P1So that the first positioning roller 104a and the second positioning roller 104b are arranged to form a substantially straight line. Further, according to some embodiments, the effective operating angle θ of the first movable roller 102aAMay range from 0 degrees to 177 degrees.
In detail, in some embodiments, when the first movable roller 102a moves from the initial position beyond a range of 90 degrees, the first movable roller 102a, the first positioning roller 104a and the second positioning roller 104b may have a specific relationship therebetween, as described below. Further, the initial position may be a position where the first movable roller 102a is in contact with only the optical film 100, but no tension is applied to the optical film 100 (e.g., the first movable roller 102a is located on the + Y axis shown in the figure).
In view of the foregoing, as shown in fig. 1, the first movable roller 102a can move from the initial position to the second position P within a range of more than 90 degrees2Spaced a third distance D from the second positioning roller 104b3And a connecting line CL between the first movable roller 102a and the first positioning roller 104a1And a connecting line CL between the first positioning roller 104a and the second positioning roller 104b2Form an included angle thetai. In some embodiments, the third distance D3The angle thetaiAnd a second distance D between the first positioning roller 104a and the second positioning roller 104b2The following relationships are satisfied: thetai＝tan-1(D3/D2)。
In some embodiments, the third distance D3May range from about 5mm to about 30mm or from about 30mm to about 70 mm. In some embodiments, the included angle θiMay range from 3 degrees to 90 degrees. Furthermore, according to some embodiments, the connection line CL1Is a tangent line with the smallest distance between the first movable roller 102a and the first positioning roller 104a, and the connecting line CL2Is a tangent line having the smallest distance between the first positioning roller 104a and the second positioning roller 104 b.
Next, referring to fig. 2, fig. 2 is a schematic structural diagram of a warpage control apparatus 20 according to another embodiment of the present disclosure. It should be understood that the same or similar components or elements are denoted by the same or similar reference numerals, and the same or similar materials and functions are the same or similar to those described above, so that the detailed description thereof will be omitted.
The warp control device 20 shown in fig. 2 is substantially similar to the warp control device 10 shown in fig. 1, except that in this embodiment, the warp control device 20 can provide a tension to the optical film 100 opposite to the direction of the warp control device 10. The warp control device 20 may be configured the same as the warp control device 10, but may apply a tension to the optical film 100 in a reverse direction by changing the configuration direction of the optical film 100, i.e., changing the direction of the contact surface of the optical film 100 with the first movable roller 102a, the first positioning roller 104a and the second positioning roller 104 b.
Specifically, taking the coordinates shown in FIG. 2 as an example, the first movable roller 102a can be moved from the + Y-axis position to the-X-axis and the-Y-axis positions, and the first movable roller 102a can apply a counterclockwise force to the optical film 100 within the range from the + Y-axis to the-Y-axis. On the other hand, in the embodiment shown in FIG. 1, the first movable roller 102a is substantially movable from the + Y-axis position to the + X-axis and the-Y-axis positions, and the first movable roller 102a is substantially capable of applying a clockwise force to the optical film 100 within the range from the + Y-axis to the-Y-axis.
Referring to fig. 3 and 4, fig. 3 is a schematic structural diagram of a warpage control apparatus 30 according to another embodiment of the present disclosure, and fig. 4 is a schematic structural diagram of a warpage control apparatus 40 according to another embodiment of the present disclosure. The warp control device 30 shown in fig. 3 is substantially similar to the warp control device 10 shown in fig. 1, with the difference that the first stop mechanism 200a of the warp control device 30 has a rectangular shape, whereas the warp control device 10 shown in fig. 1 has a circular-shaped first stop mechanism 200 a. On the other hand, the warpage control apparatus 40 shown in fig. 4 is different from the warpage control apparatus 10 shown in fig. 1 in that the first stopper mechanism 200a of the warpage control apparatus 40 has a pentagonal shape.
In some embodiments, the shape of the first spacing mechanism 200a may include a shape having a circle, a semicircle, an ellipse, a rectangle, a pentagon, a hexagon, an irregular shape, other suitable shape, or a combination of the foregoing. It should be understood that, in different embodiments, the first limiting mechanism 200a with a suitable shape can be selected according to actual requirements.
In view of the foregoing, according to some embodiments of the present disclosure, the first movable roller 102a, the first positioning roller 104a and the second positioning roller 104b can be configured to apply different tensions to the optical film 100 at different angles to adjust or reduce the warpage of the optical film 100. The warpage-controlling apparatus 10 of the disclosed embodiment can further move the movable roller in a planar (two-dimensional) manner, increasing the adjustable warpage degree, compared to the movable roller that can only move linearly (one-dimensional) with a limited adjustment warpage angle.
Next, referring to fig. 5A, fig. 5A is a schematic structural diagram of a warpage control apparatus 50 according to another embodiment of the present disclosure. The warp control device 50 shown in fig. 5A is substantially similar to the warp control device 10 shown in fig. 1, and the difference is that the warp control device 50 may further include a second movable roller 102b and a second limiting mechanism 200 b. The second movable roller 102b can be mounted on the first position-limiting mechanism 200a and can move on a path or track defined by the first position-limiting mechanism 200 a. The second movable roller 102b can move on the first position-limiting mechanism with the first positioning roller 104a as the axis.
In some embodiments, the second movable roller 102b may be moved to a specific position according to the property or process requirement of the optical film 100, so that the second movable roller 102b applies an appropriate tension to the optical film 100. In some embodiments, the first movable roller 102a or the second movable roller 102b may be selected as a work roller to apply tension to the optical film 100 according to the process requirements.
In some embodiments, the second movable roller 102b is separated from the first positioning roller 104a by a fourth distance D4. In some embodiments, the fourth distance D4May range from about 30mm to about 500mm, from about 50mm to about 300mm, or from about 100mm to about 150 mm. According to some embodiments, the fourth distance D4May be defined as the distance between the center of the second movable roller 102b and the center of the first positioning roller 104a, or the minimum distance between the second movable roller 102b and the first positioning roller 104 a.
In some embodiments, the diameter r of the second movable roller 102b4May range from about 75mm to about 125mm, from about 80mm to about 110mm, or from about 90mm to about 110 mm. Diameter r of the second movable roller 102b4Can be matched with the diameter r of the first movable roller 102a1The same or different.
Moreover, the material of the second movable roller 102b may be the same as or similar to the material of the first movable roller 102a, and is not repeated here.
As mentioned above, the second position-limiting mechanism 200b may further include a second position-limiting mechanism 200b, and the first positioning roller 104a and the second positioning roller 104b may be fixed on the second position-limiting mechanism 200 b. In some embodiments, the first positioning roller 104a and the second positioning roller 104b may be disposed opposite to each other.
Further, in some embodiments, the position of the second limiting mechanism 200b may overlap with the travel route of the optical film 100. In detail, in some embodiments, the geometric center CT of the second limiting mechanism 200b2May overlap the travel path of optical film 100.
In some embodiments, the second limiting mechanism 200b may comprise a rail, a turntable, a locating pin, a locating hole, other suitable limiting mechanism, or a combination of the foregoing. In some embodiments, the second spacing mechanism 200b may partially overlap the first spacing mechanism 200 a. Furthermore, the second position-limiting mechanism 200b and the first position-limiting mechanism 200a may have the same or different shapes. In some embodiments, the first spacing mechanism 200a is larger in size than the second spacing mechanism 200 b. For example, in some embodiments where the first and second spacing mechanisms 200a, 200b are circular, the radius of the first spacing mechanism 200a is greater than the radius of the second spacing mechanism 200 b.
In view of the above, in some embodiments, the first positioning roller 104a and the second positioning roller 104b can be fixed on the second limiting mechanism 200b, and the second limiting mechanism 200b can be rotatable. In some embodiments, the positions of the first positioning roller 104a and the second positioning roller 104b can be changed by rotating the second limiting mechanism 200 b.
Referring to fig. 5A-5C, fig. 5A-5C are schematic structural views illustrating the warpage control apparatus 50 during operation according to some embodiments of the present disclosure. The method for controlling the warpage of the optical film 100 according to some embodiments of the present disclosure will be described with reference to the operation process of the warpage control apparatus 50. It should be understood that although the following description only describes the method for controlling the warpage of the optical film 100 by using the warpage control apparatus 50 as an example, one skilled in the art can also use other warpage control apparatuses to implement the method for controlling the warpage of the optical film 100.
Referring to fig. 5A, a method for controlling warpage of an optical film 100 includes the following steps: providing an optical film 100, guiding the optical film 100 into the warpage-controlling device 50, and moving the first movable roller 102a to the working position P with the first positioning roller 104a as the axiswTo stretch the optical film 100.
In the above steps, the first movable roller 102a is used as a work roller. In addition, the second movable roller 102b can be disposed at the idle position PiAs idle rollers. In some embodiments, the working position P may be set according to the property of the optical film 100 or the process requirementwAnd a rest position Pi. In addition, the optical film 100 may have two opposite surfaces 100A and 100B, in which the optical film 100 contacts the first movable roller 102a with the surface 100A, and further contacts the first positioning roller 104a and the second positioning roller 104B with the surface 100B and the surface 100A, respectively.
Next, referring to FIG. 5B, in some implementationsIn one embodiment, the method for controlling the warpage of the optical film 100 can further comprise the steps of: move the first movable roller 102a to the idle position PiAnd rotating the second limiting mechanism 200b to prevent the optical film 100 from contacting the first positioning roller 104a and the second positioning roller 104 b.
In detail, the first movable roller 102a can be moved to the idle position PiSo as not to contact with the optical film 100, and a rest position P of the first movable roller 102aiThe idle position P of the second movable roller 102biDifferent. According to some embodiments, any position on the first position-limiting mechanism 200a that is not in contact with the optical film 100 can be regarded as the idle position Pi。
In addition, the second limiting mechanism 200b can be rotated according to the arrow direction shown in fig. 5A, so that the optical film 100 passes through between the first movable roller 102a and the second movable roller 102b and between the first positioning roller 104a and the second positioning roller 104 b. In this step, the first movable roller 102a, the second movable roller 102b, the first positioning roller 104a and the second positioning roller 104b are not in contact with the optical film 100.
Next, referring to fig. 5C, in some embodiments, the method for controlling the warpage of the optical film 100 further comprises the following steps: the second limiting mechanism 200b is rotated continuously, so that the optical film 100 contacts the first positioning roller 104a and the second positioning roller 104b again.
In detail, the second limiting mechanism 200B may be rotated continuously in the same direction (for example, the direction of the arrow shown in fig. 5B) as the previous step until the optical film 100 contacts the first positioning roller 104a and the second positioning roller 104B with the other surface. Specifically, in this step, the optical film 100 contacts the first positioning roller 104a and the second positioning roller 104B with the surface 100B and the surface 100A, respectively.
Furthermore, in some embodiments, the method of controlling the warpage of the optical film 100 can further comprise the steps of: the second movable roller 102b is moved to the operating position Pw so as to be in contact with the optical film 100. In this step, the optical film 100 may contact the second movable roller 102b with the surface 100A.
In light of the foregoing, according to some embodiments, the method for controlling the warpage of the optical film 100 can simply convert the arrangement direction of the optical film 100 relative to the roller, and can change the tension direction applied to the optical film 100 by the roller.
In summary, according to some embodiments of the present disclosure, the warpage control apparatus includes a movable roller capable of moving in various directions and angles, so as to adjust the stress applied to the optical film by the warpage adjusting roller in real time and easily according to the characteristics of different optical films, thereby improving the warpage of the optical film. In addition, according to some embodiments of the present disclosure, the warpage-controlling device may further include a rotatable positioning roller, so that the arrangement direction of the optical film on the roller may be simply switched, and the steps of cutting the optical film and re-passing the optical film may be omitted, thereby simplifying the manufacturing process.
Although embodiments of the present disclosure and their advantages have been described above, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the disclosure by those skilled in the art. Moreover, the scope of the present disclosure is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. Accordingly, the scope of the present disclosure includes the processes, machines, manufacture, compositions of matter, means, methods, and steps described above. In addition, each claim constitutes a separate embodiment, and the scope of the present disclosure also includes combinations of the respective claims and embodiments. The scope of the present disclosure is to be determined by the claims appended hereto.

Claims (22)

1.一种翘曲控制装置，其特征在于，包括：1. A warpage control device, characterized in that, comprising: 一第一限位机构；1. the first limit mechanism; 一第一可动滚轮，安装于该第一限位机构上a first movable roller mounted on the first limiting mechanism 一第一定位滚轮，邻近该第一限位机构设置，该第一可动滚轮与该第一定位滚轮之间相隔一第一距离；以及a first positioning roller disposed adjacent to the first limiting mechanism, a first distance between the first movable roller and the first positioning roller; and 一第二定位滚轮，其中该第二定位滚轮与该第一定位滚轮之间相隔一第二距离，且其中该第一可动滚轮以该第一定位滚轮为轴心进行移动。A second positioning roller, wherein a second distance is separated between the second positioning roller and the first positioning roller, and wherein the first movable roller moves with the first positioning roller as an axis. 2.根据权利要求1所述的翘曲控制装置，其特征在于，其中该第一距离为该第一可动滚轮的中心与该第一定位滚轮的中心之间的距离或该第一可动滚轮与该第一定位滚轮之间的最小距离其中之一。2 . The warpage control device of claim 1 , wherein the first distance is the distance between the center of the first movable roller and the center of the first positioning roller or the first movable roller. 3 . One of the minimum distances between the roller and the first positioning roller. 3.根据权利要求1所述的翘曲控制装置，其特征在于，该第一距离的范围为30mm至500mm。3 . The warpage control device of claim 1 , wherein the first distance ranges from 30 mm to 500 mm. 4 . 4.根据权利要求1所述的翘曲控制装置，其特征在于，该第一限位机构包括一轨道、一转盘、一定位销、一定位孔或前述的组合。4 . The warpage control device of claim 1 , wherein the first limiting mechanism comprises a rail, a turntable, a positioning pin, a positioning hole, or a combination thereof. 5 . 5.根据权利要求1所述的翘曲控制装置，其特征在于，该第一限位机构具有圆形、半圆形、椭圆形、矩形、五边形、六边形、不规则形或前述的组合。5 . The warpage control device according to claim 1 , wherein the first limiting mechanism has a circular shape, a semicircular shape, an oval shape, a rectangular shape, a pentagon shape, a hexagon shape, an irregular shape or the foregoing. 6 . The combination. 6.根据权利要求1所述的翘曲控制装置，其特征在于，该第二距离为该第一定位滚轮的中心与该第二定位滚轮的中心之间的距离。6 . The warpage control device of claim 1 , wherein the second distance is the distance between the center of the first positioning roller and the center of the second positioning roller. 7 . 7.根据权利要求1所述的翘曲控制装置，其特征在于，该第一定位滚轮的中心与该第二定位滚轮之间的最小距离其中之一；或该第二距离的范围为30mm至500mm。7 . The warpage control device according to claim 1 , wherein one of the minimum distances between the center of the first positioning roller and the second positioning roller; or the range of the second distance is 30mm to 100mm. 8 . 500mm. 8.根据权利要求1所述的翘曲控制装置，其特征在于，该第一距离与该第二距离的比例为0.5:1～1:1.5之间。8 . The warpage control device of claim 1 , wherein the ratio of the first distance to the second distance is between 0.5:1 and 1:1.5. 9 . 9.根据权利要求1所述的翘曲控制装置，其特征在于，该第一可动滚轮的直径的范围为75mm至125mm，及/或该第一定位滚轮的直径的范围为75mm至125mm。9 . The warpage control device of claim 1 , wherein the diameter of the first movable roller ranges from 75 mm to 125 mm, and/or the diameter of the first positioning roller ranges from 75 mm to 125 mm. 10 . 10.根据权利要求1所述的翘曲控制装置，其特征在于，该第一可动滚轮能移动至一第一位置，使其与该第一定位滚轮以及该第二定位滚轮排列呈现一直线。10 . The warpage control device of claim 1 , wherein the first movable roller can move to a first position so that it is aligned with the first positioning roller and the second positioning roller. 11 . . 11.根据权利要求1所述的翘曲控制装置，其特征在于，该第一可动滚轮能移动至一第二位置，使其与该第二定位滚轮相隔一第三距离，且该第一可动滚轮与该第一定位滚轮以及该第一定位滚轮与该第二定位滚轮的分别的连线形成一夹角，其中该第三距离(标记为D3)、该夹角(标记为θi)与该第二距离(标记为D2)符合下列关系式：11 . The warpage control device according to claim 1 , wherein the first movable roller can move to a second position to be separated from the second positioning roller by a third distance, and the first movable roller can move to a second position. 12 . The movable roller and the first positioning roller and the respective connecting lines of the first positioning roller and the second positioning roller form an included angle, wherein the third distance (marked as D 3 ), the included angle (marked as θ) i ) corresponds to the second distance (labeled D 2 ) according to the following relation: θi＝tan-1(D3/D2)。θ i =tan −1 (D 3 /D 2 ). 12.根据权利要求11所述的翘曲控制装置，其特征在于，该夹角的范围为3度至90度；或该第三距离的范围为5mm至70mm。12 . The warpage control device of claim 11 , wherein the included angle ranges from 3 degrees to 90 degrees; or the third distance ranges from 5 mm to 70 mm. 13 . 13.根据权利要求1所述的翘曲控制装置，其特征在于，还包括一第二可动滚轮，安装于该第一限位机构上，该第二可动滚轮以该第一定位滚轮为轴心进行移动。13 . The warpage control device of claim 1 , further comprising a second movable roller mounted on the first limiting mechanism, wherein the second movable roller is the first positioning roller as the first positioning roller. 14 . The axis moves. 14.根据权利要求1所述的翘曲控制装置，其特征在于，还包括一第二限位机构，其中该第一定位滚轮与该第二定位滚轮固定于该第二限位机构上，且该第二限位机构为可转动的。14. The warpage control device of claim 1, further comprising a second limiting mechanism, wherein the first positioning roller and the second positioning roller are fixed on the second limiting mechanism, and The second limiting mechanism is rotatable. 15.一种控制光学膜的翘曲的方法，其特征在于，包括：15. A method of controlling warpage of an optical film, comprising: 提供一光学膜；providing an optical film; 将该光学膜导入一翘曲控制装置，该翘曲控制装置包括：The optical film was introduced into a warpage control device, the warpage control device comprising: 一第一限位机构；1. the first limit mechanism; 一第一可动滚轮，安装于该第一限位机构上；a first movable roller mounted on the first limiting mechanism; 一第一定位滚轮，设置于该第一可动滚轮的下游；以及a first positioning roller disposed downstream of the first movable roller; and 一第二定位滚轮，设置于该第一定位滚轮的下游；以及a second positioning roller disposed downstream of the first positioning roller; and 以该第一定位滚轮为轴心，移动该第一可动滚轮至一工作位置，以接触该光学膜，其中该光学膜与该第一定位滚轮及该第二定位滚轮接触，且于该第一定位滚轮上形成一第二抱角，其中该第二抱角的范围为0度至220度。Taking the first positioning roller as the axis, moving the first movable roller to a working position to contact the optical film, wherein the optical film is in contact with the first positioning roller and the second positioning roller, and is in contact with the first positioning roller and the second positioning roller. A second holding angle is formed on a positioning roller, wherein the range of the second holding angle is 0 degrees to 220 degrees. 16.根据权利要求15所述的控制光学膜的翘曲的方法，其特征在于，该光学膜与该第一可动滚轮及该第一定位滚轮接触，且于该第一可动滚轮上形成一第一抱角，其中该第一抱角的范围为0度至220度。16. The method of claim 15, wherein the optical film is in contact with the first movable roller and the first positioning roller, and is formed on the first movable roller a first embrace angle, wherein the range of the first embrace angle is 0 degrees to 220 degrees. 17.根据权利要求153所述的控制光学膜的翘曲的方法，其特征在于，该第一定位滚轮与该第一限位机构的一几何中心重叠。17 . The method of claim 153 , wherein the first positioning roller overlaps with a geometric center of the first limiting mechanism. 18 . 18.根据权利要求15所述的控制光学膜的翘曲的方法，其特征在于，该翘曲控制装置还包括一第二可动滚轮，安装于该第一限位机构上，其中，该第二可动滚轮以该第一定位滚轮为轴心进行移动。18. The method of claim 15, wherein the warp control device further comprises a second movable roller mounted on the first limiting mechanism, wherein the first The two movable rollers move with the first positioning roller as the axis. 19.根据权利要求18所述的控制光学膜的翘曲的方法，其特征在于，该翘曲控制装置还包括一第二限位机构，且该第一定位滚轮与该第二定位滚轮固定于该第二限位机构上。19. The method of claim 18, wherein the warpage control device further comprises a second limiting mechanism, and the first positioning roller and the second positioning roller are fixed on on the second limiting mechanism. 20.根据权利要求19所述的控制光学膜的翘曲的方法，其特征在于，还包括：将该第一可动滚轮移动至一闲置位置，以及转动该第二限位机构，使该光学膜不与该第一定位滚轮及该第二定位滚轮接触。20. The method of claim 19, further comprising: moving the first movable roller to an idle position, and rotating the second limiting mechanism to make the optical film The film is not in contact with the first positioning roller and the second positioning roller. 21.根据权利要求20所述的控制光学膜的翘曲的方法，其特征在于，还包括：继续转动该第二限位机构，使该光学膜再次与该第一定位滚轮及该第二定位滚轮接触。21 . The method of claim 20 , further comprising: continuing to rotate the second limiting mechanism to make the optical film align with the first positioning roller and the second positioning roller again. 22 . roller contact. 22.根据权利要求20所述的控制光学膜的翘曲的方法，其特征在于，还包括：将该第二可动滚轮移动至该工作位置，使其与该光学膜接触。22 . The method of claim 20 , further comprising: moving the second movable roller to the working position to contact the optical film. 23 .
CN201911167282.3A 2019-02-20 2019-11-25 Warp control device and method for controlling warp of optical film Expired - Fee Related CN110989057B (en)

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