CN113678185B - Protective film for display and alignment method thereof - Google Patents
Protective film for display and alignment method thereof Download PDFInfo
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- CN113678185B CN113678185B CN202080028863.3A CN202080028863A CN113678185B CN 113678185 B CN113678185 B CN 113678185B CN 202080028863 A CN202080028863 A CN 202080028863A CN 113678185 B CN113678185 B CN 113678185B
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- film layer
- display
- release film
- protective film
- alignment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- General Physics & Mathematics (AREA)
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The protective film for a display is formed by laminating a base film layer (10), an adhesive layer (30) formed on the surface of the base film layer (10), and a release film layer (20) bonded to the adhesive layer (30). Protrusions (125, 126) are formed by bending or bending a part of the protective film (100) (protrusion forming step). The alignment of the protective film (100) with respect to the display (1) is performed by bringing the protrusions (125, 126) into contact with the side surfaces (1A, 1B) of the display (1) (alignment step).
Description
Technical Field
The present invention relates to a protective film for a display, which is formed by laminating a base film layer, a first adhesive layer formed on the surface of the base film layer, and a release film layer bonded to the first adhesive layer, and a method for aligning the protective film.
Background
A protective film is sometimes attached to a display of various devices such as a mobile phone, a game machine, and a tablet terminal so as to protect at least a display area. Among such protective films, there are also protective films that have not only a display region of a display but also other functions such as an antireflection function.
The protective film is formed by laminating another film layer via an adhesive layer on a base film layer that covers and protects a display region of a display. Specifically, a release film layer is laminated on one surface of a base film layer via an adhesive layer, and after the release film layer is released from the adhesive layer, the adhesive layer can be attached to a display region of a display. On the other surface of the base film layer, film layers corresponding to various functions are laminated as needed.
In a general protective film, the entire adhesive layer is covered with a single release film layer, and the release film layer is peeled off to expose the entire adhesive layer and then attached to the display area of the display. In this case, it is generally difficult for the user to attach the protective film to the display area at a time while positioning the protective film with respect to the display area.
Accordingly, a structure has been proposed that enables easy and accurate alignment of the protective film (for example, refer to patent document 1 below).
Prior art literature
Patent literature
Patent document 1: japanese patent application laid-open No. 2015-203090
Disclosure of Invention
Problems to be solved by the invention
In the structure described in patent document 1, the protective film can be easily and accurately aligned, but the attachment member needs to be fixed to a part of the release film layer, so that the manufacturing cost is relatively high. Therefore, a structure capable of positioning the protective film with a simpler structure is desired.
The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a protective film for a display and a method of aligning the same, which can perform alignment with a simpler structure.
Means for solving the problems
(1) The alignment method of the protective film for a display according to the present invention is an alignment method of a protective film for a display, and includes a protrusion forming step and an alignment step. The protective film for a display is formed by laminating a base film layer, a first adhesive layer formed on the surface of the base film layer, and a release film layer bonded to the first adhesive layer. In the protrusion forming step, a part of the display protection film is bent or curved to form an alignment protrusion. In the alignment step, the alignment protrusion is brought into contact with a side surface of the display to perform alignment of the display protection film with respect to the display.
According to this configuration, the alignment protrusion can be formed simply by bending or bending only a part of the display protection film. By bringing the alignment protrusion into contact with the side surface of the display, alignment can be performed with a simpler structure.
(2) In the aligning step, an edge of the aligning protrusion may be brought into contact with a side surface of the display.
According to such a configuration, since the edge of the alignment protrusion contacts the side surface of the display when the alignment protrusion is aligned, the alignment protrusion formed by bending or bending a part of the display protection film is hard to recover when the alignment protrusion contacts the side surface of the display. Thus, alignment can be performed more stably.
(3) In the protrusion forming step, the annular alignment protrusion may be formed by inserting a tip portion of the folded or bent portion of the display protection film into a slit formed in the display protection film.
According to this structure, the edge of the alignment protrusion formed in the annular shape contacts the side surface of the display when the alignment is performed. By forming the alignment protrusion in a ring shape, the strength of the alignment protrusion increases, and alignment can be performed more stably. In particular, the alignment protrusion can be formed by a simple operation of inserting the tip portion of a part of the folded or bent protective film for a display into a slit formed in the protective film for a display.
(4) The protective film for a display may include a second adhesive layer formed on a surface of the release film layer on a side opposite to the first adhesive layer side. In this case, in the protrusion forming step, the annular alignment protrusion may be formed by attaching the tip portion of the folded or bent portion of the protective film for display to the second adhesive layer.
According to this structure, the edge of the alignment protrusion formed in the annular shape contacts the side surface of the display when the alignment is performed. By forming the alignment protrusion in a ring shape, the strength of the alignment protrusion increases, and alignment can be performed more stably. In particular, the alignment protrusion can be formed by a simple operation of attaching the tip portion of the folded or bent portion of the protective film for a display to the second adhesive layer.
(5) In the aligning step, the surface of the aligning protrusion may be brought into face-to-face contact with the side surface of the display.
According to such a configuration, when aligning, the surface of the alignment protrusion is in face-to-face contact with the side surface of the display, so that the contact area of the alignment protrusion with respect to the side surface of the display is large. Thus, the alignment can be performed with higher accuracy.
(6) The protective film for a display may include a second adhesive layer formed on a surface of the release film layer on a side opposite to the first adhesive layer side. In this case, in the alignment step, the second adhesive layer in the alignment protrusion may be adhered to a side surface of the display.
According to such a configuration, the second adhesive layer in the alignment protrusion adheres to the side surface of the display when aligned, and therefore, the position of the display protection film with respect to the display after alignment is less likely to shift. Thus, the alignment can be performed with higher accuracy.
(7) The protective film for a display according to the present invention is formed by laminating a base film layer, a first adhesive layer formed on the surface of the base film layer, and a release film layer bonded to the first adhesive layer. The display protection film is formed with a notch for forming an alignment protrusion by bending or bending a part of the display protection film.
According to this configuration, the alignment protrusion can be formed simply by bending or bending a part of the display protection film from the notch. By bringing the alignment protrusion into contact with the side surface of the display, alignment can be performed with a simpler structure.
Effects of the invention
According to the present invention, the alignment protrusion can be simply formed, and the alignment protrusion can be brought into contact with the side surface of the display, thereby enabling alignment with a simpler structure.
Drawings
Fig. 1 is a bottom view showing a structural example of a protective film according to a first embodiment of the present invention.
Fig. 2 is a side view of the protective film of fig. 1.
Fig. 3 is a bottom view showing a state in which a part of the release film layer in the protective film of fig. 1 is folded.
Fig. 4 is a side view of the protective film in the state of fig. 3.
Fig. 5 is a partial side view of a protective film for explaining a first modification of the above embodiment.
Fig. 6 is a partial bottom view of a protective film for explaining a second modification of the above embodiment.
Fig. 7 is a partial side view of the protective film of fig. 6.
Fig. 8 is a partial bottom view of a protective film for explaining a second modification of the above embodiment.
Fig. 9 is a partial side view of the protective film of fig. 8.
Fig. 10 is a partial side view of the protective film of fig. 8.
Fig. 11 is a bottom view showing a configuration example of a protective film according to a second embodiment of the present invention.
Fig. 12 is a bottom view showing a state in which a part of the release film layer in the protective film of fig. 11 is folded.
Fig. 13 is a bottom view showing a configuration example of a protective film according to a third embodiment of the present invention.
Fig. 14 is a bottom view showing a state in which a part of the release film layer in the protective film of fig. 13 is folded.
Fig. 15 is a side view of the protective film in the state of fig. 14 viewed in the longitudinal direction.
Fig. 16 is a side view of the protective film in the state of fig. 14 viewed in the short side direction.
Detailed Description
Hereinafter, an embodiment of a protective film for a display (hereinafter, simply referred to as "protective film") according to an embodiment of the present invention will be described in detail. In addition, for ease of explanation, each layer of the protective film illustrated in the following embodiment is represented by a thickness larger than the actual thickness.
1. First embodiment
Fig. 1 is a bottom view showing a structural example of a protective film 100 according to a first embodiment of the present invention. Fig. 2 is a side view of the protective film 100 shown in fig. 1. The protective film 100 according to the present embodiment is attached to a display of various devices such as a mobile phone, a game machine, and a tablet terminal, and protects at least a display area of the display.
The protective film 100 is formed by laminating a base film layer 10 and a release film layer 20 via an adhesive layer 30. That is, the adhesive layer 30 is formed on one surface of the base film layer 10, and the release film layer 20 is provided on the adhesive layer 30. An arbitrary film layer corresponding to various functions such as an antireflection function may be laminated on the other surface of the base film layer 10. The base film layer 10 itself may have such various functions.
The base film layer 10, the release film layer 20, and the adhesive layer 30 are transparent. Therefore, in the bottom view of the protective film 100 shown in fig. 1, the base film layer 10 and the adhesive layer 30 located on the upper surface side can be visually recognized from the bottom surface side through the release film layer 20. However, at least one of the base film layer 10 and the adhesive layer 30 may be translucent. In addition, the release film layer 20 may be translucent or opaque.
The substrate film layer 10 has a shape capable of covering a display area of the display. More specifically, the substrate film layer 10 has the same shape as or larger than the display area of the display. In this example, the base film layer 10 is formed in a rectangular shape, but may be formed in other rectangular shapes such as a square shape according to the shape of the display area of the display, or may be formed in other various shapes such as a circular shape and an elliptical shape without being limited to the rectangular shape.
The adhesive layer 30 is formed on the entire surface of the base film layer 10. The release film layer 20 has a larger shape than the base film layer 10, and is laminated in a state of protruding to a position outside the peripheral edge of the base film layer 10. The release film layer 20 is releasably attached to the adhesive layer 30. Thus, the release film layer 20 is peeled off to expose the adhesive layer 30, and the adhesive layer 30 is attached to the display region of the display, whereby the display region can be covered and protected with the base film layer 10.
In the present embodiment, a notch 121 is formed in one short side of the release film layer 20. The slit 121 is formed in an L shape so as to extend from the short side in the long side direction D1 of the release film layer 20 and then extend in the short side direction D2. Thereby, a part of the release film layer 20 separated at the notch 121 can be bent or curved. On the short side of the release film layer 20, perforations 122 extending in the longitudinal direction D1 of the release film layer 20 are formed. The eyelet 122 extends in a straight line, the terminal end of which is located at the terminal end of the slit 121.
In the present embodiment, the slit 123 is also formed in each long side of the release film layer 20. Each slit 123 is formed in an L-shape so as to extend from each long side along the short side direction D2 of the release film layer 20 and then extend along the long side direction D1. Thereby, a part of the release film layer 20 separated at each slit 123 can be bent or curved. On each long side of the release film layer 20, an aperture 124 extending along the short side direction D2 of the release film layer 20 is formed. The eyelet 124 extends in a straight line with its terminal end at the terminal end of the slit 123.
When a portion of the release film layer 20 separated at the slits 121, 123 is bent or curved, the portion can be bent or curved along the perforations 122, 124. That is, the perforations 122 and 124 function as guides when bending or bending a portion of the release film layer 20. However, the guide portion is not limited to the perforation, and may be, for example, a recess, a simple mark, or the like, as long as it is a portion of the release film layer 20 that is easily bent or curved.
The release film layer 20 is divided into a first release film layer 21 and a second release film layer 22 by a cutting line 20A extending in the short-side direction D2. The first release film layer 21 and the second release film layer 22 are juxtaposed in the longitudinal direction D1. Thereby, the first release film layer 21 and the second release film layer 22 can be independently peeled from the adhesive layer 30. Each of the cuts 121 and 123 may be formed only in one of the first release film layer 21 and the second release film layer 22, or may be formed in both of the first release film layer 21 and the second release film layer 22.
Fig. 3 is a bottom view showing a state in which a part of the release film layer 20 in the protective film 100 of fig. 1 is bent. Fig. 4 is a side view of the protective film 100 in the state of fig. 3.
When a part of the release film layer 20 separated at the cuts 121 and 123 is bent from the state shown in fig. 1 and 2, projections 125 and 126 protruding from the remaining part of the release film layer 20 are formed as shown in fig. 3 and 4 (projection forming step). The protrusions 125 and 126 constitute alignment protrusions for aligning the protective film 100 with respect to the display 1.
The distance L1 between the pair of protrusions 126 formed on the long sides of the release film layer 20 is substantially the same as the width of the display 1 (the distance between the pair of opposed side surfaces 1A). The term "substantially the same" is a concept including not only the case where the distance L1 is the same as the width of the display 1 but also the case where the distance L1 is larger than the width of the display 1 by a few amounts (e.g., several mm or less).
Accordingly, as shown in fig. 3 and 4, the pair of protrusions 126 formed on the long sides of the release film layer 20 are brought into contact with the pair of side surfaces 1A of the display 1, whereby the protective film 100 can be aligned in the short side direction D2 with respect to the display 1 (alignment step). The position of the base film layer 10 in the short-side direction D2 with respect to the release film layer 20 corresponds to the position of the display region of the display 1 when the alignment is performed by the pair of protrusions 126.
When the protective film 100 is aligned with respect to the display 1, the side surfaces 1B of the display 1 other than the pair of side surfaces 1A are brought into contact with the protrusions 125 formed on the short sides of the release film layer 20. The position of the base film layer 10 in the longitudinal direction D1 with respect to the release film layer 20 corresponds to the position of the display region of the display 1 when the alignment is performed by the protrusions 125.
In this way, the alignment of the protective film 100 with respect to the display 1 is performed by bringing the protrusions 125 and 126 into contact with the side surfaces 1A and 1B of the display 1. At this time, the edges of the protrusions 125 and 126 are in contact with the side surfaces 1A and 1B of the display 1. That is, the extending direction of the protrusions 125 and 126 intersects (e.g., is orthogonal to) the side surfaces 1A and 1B with which the protrusions 125 and 126 are in contact.
In the present embodiment, the protrusions 125 and 126 can be formed simply by bending or bending only a part of the protective film 100 (the release film layer 20). By bringing the protrusions 125 and 126 into contact with the respective side surfaces 1A and 1B of the display 1, alignment can be performed with a simpler structure. In particular, since the edges of the protrusions 125 and 126 are in contact with the side surfaces 1A and 1B of the display 1 when aligned, the protrusions 125 and 126 formed by bending or bending a part of the protective film 100 are hard to recover when in contact with the side surfaces 1A and 1B of the display 1. Thus, alignment can be performed more stably.
After the alignment is performed in this way, a part of the adhesive layer 30 is exposed by peeling the second release film layer 22. In addition, when the aligned state is maintained, a part of the exposed adhesive layer 30 is attached to the display region of the display 1. Thereafter, the first release film layer 21 is peeled off to expose the remaining portion of the adhesive layer 30, and the portion is attached to the display area of the display 1.
2. Modification examples
2-1. First modification example
Fig. 5 is a partial side view of the protective film 100 for explaining the first modification of the above embodiment. In this example, the edge 126A on the display 1 side of each projection 126 is not parallel to the side surface 1A of the display 1, but is inclined with respect to the side surface 1A of the display 1, which is different from the above-described embodiment. Hereinafter, the protrusion 126 will be described, but the same configuration may be adopted for the protrusion 125.
The edge 126A of each projection 126 is inclined so as to gradually move away from the side surface 1A of the display 1 toward the front end of each projection 126. That is, each protrusion 126 is formed in a trapezoid tapered toward the front end. The distance between the protrusions 126 (the distance between the edges 126A) opposing each other is larger than the width of the display 1 at the front end (lower end) of each protrusion 126 and smaller than the width of the display 1 at the base (upper end) of each protrusion 126.
Accordingly, as shown in fig. 5, when the protective film 100 is aligned in the short side direction D2 with respect to the display 1 (alignment step) by bringing the pair of protrusions 126 formed on the long sides of the release film layer 20 into contact with the pair of side surfaces 1A of the display 1, the region of the release film layer 20 facing the base film layer 10 is separated from the display region of the display 1. In this way, the region of the release film layer 20 facing the base film layer 10 may be separated from the display region of the display 1 or may be in contact with the display region as in the above embodiment.
In the state shown in fig. 5, a force is applied from the edge 126A of each protrusion 126 toward the center side of the display 1 to the pair of side surfaces 1A of the display 1 in contact with the edge 126A. As a result, the position of the protective film 100 is easily stabilized with respect to the display 1, and thus alignment can be performed more stably.
The height (length from the base to the front) of each projection 126 is greater than the thickness of the display 1. Thus, when the protective film 100 in a state in which the protrusions 126 are protruded is positioned with respect to the display 1 mounted on the counter, the tip of each protrusion 126 contacts the counter, and the protective film 100 stands on the counter with each protrusion 126 as a leg.
In the case of such a configuration, when the protective film 100 is aligned with respect to the display 1, the region of the release film layer 20 facing the base film layer 10 can be aligned with respect to the display region of the display 1 without touching the region.
Further, a guide portion such as a grommet extending in the horizontal direction (left-right direction in fig. 5) may be formed at the tip end portion of each projection 126. In this case, the height of each protrusion 126 can be adjusted by cutting or bending the tip portion of each protrusion 126 along the guide portion. As a result, as shown in fig. 5, the tip of each projection 126 can be brought into contact with the mesa with high accuracy, and the protective film 100 can be stably erected on the mesa. A plurality of guide portions extending parallel to each other may be formed in each of the projections 126 so that such height adjustment can be performed in multiple stages. Alternatively, instead of forming the guide portion described above in each projection 126, the user may cut or bend the tip portion of each projection 126 at an arbitrary position to adjust the height.
In the above embodiment, the tip ends of the protrusions 125 and 126 formed by bending or bending a part of the release film layer 20 are formed as free ends, respectively. However, the front end portions of the protrusions 125 and 126 may be fixed ends, not limited to this configuration.
2-2 second modification example
Fig. 6 is a partial bottom view of the protective film 100 for explaining the second modification of the above embodiment. In addition, fig. 7 is a partial side view of the protective film 100 of fig. 6. In this example, a first slit 127A extending in the longitudinal direction D1 of the release film layer 20 is formed at the tip portion 127 of a part of the release film layer 20 separated at the slit 121. In addition, a second slit 127B extending in the longitudinal direction D1 of the release film layer 20 is formed at a position distant from the slit 121 at a short side of the slit 121 formed in the release film layer 20. The first slit 127A and the second slit 127B extend in opposite directions from each other, and the positions of the respective terminals substantially coincide in the longitudinal direction D1 of the release film layer 20.
When a portion of the release film layer 20 separated at the notch 121 is bent or curved, as shown in fig. 7, the front end 127 of the portion of the release film layer 20 is inserted into the second slit 127B. Thus, the distal end portion 127 is a fixed end, and an annular projection 128 is formed. The annular protrusion 128 can be formed by bending or bending a part of the release film layer 20 into an arbitrary shape such as an arc shape or a rectangular shape.
At this time, by inserting the first slit 127A formed in the distal end portion 127 from the second slit 127B, the terminals of the respective slits 127A, 127B are brought into contact with each other. Accordingly, since the tip portion 127 is locked to the second slit 127B, the tip portion 127 is less likely to be separated from the second slit 127B, and the shape of the projection 128 can be stably maintained in the annular shape.
When the protective film 100 is aligned with respect to the display 1, the edge of the projection 128 formed in a ring shape contacts the side surface 1B of the display 1. By forming the protrusion 128 in a ring shape, the strength of the protrusion 128 increases, and alignment can be performed more stably. In particular, the protrusion 128 can be formed by a simple operation of inserting the tip portion 127 of a part of the protective film 100 (the release film layer 20) after bending or bending into the second slit 127B formed in the protective film 100.
The above-described configuration can be adopted not only at the short sides of the release film layer 20 but also at the periphery of the notch 123 formed at each long side of the release film layer 20. The release film layer 20 may or may not have a guide portion such as the perforation 122.
2-3 third modification example
Fig. 8 is a partial bottom view of the protective film 100 for explaining the third modification of the above embodiment. Fig. 9 and 10 are partial side views of the protective film 100 of fig. 8. In this example, as shown in fig. 9, the protective film 100 further includes an adhesive layer 40 and a release film layer 50. Specifically, the protective film 100 is formed by sequentially stacking the base film layer 10, the adhesive layer 30, the release film layer 20, the adhesive layer 40, and the release film layer 50. For example, the adhesive layer 30 is formed of a silicon adhesive, and the adhesive layer 40 is formed of an acrylic adhesive, but is not limited thereto. By making the specification different between the release film layer 20 and the release film layer 50, the release film layer 50 is more easily peeled from the adhesive layer 40 than the release film layer 20. The release film layer 20 is divided into the first release film layer 21 and the second release film layer 22, and the release layer 40 is divided into two regions similarly, but the release film layer 50 may not be divided.
When the base film layer 10 is attached to the display region of the display 1, first, the adhesive layer 40 is exposed by peeling the peeling film layer 50 from the adhesive layer 40. Then, the adhesive layer 40 is bonded to the display region of the display 1 after the protective film 100 is aligned with respect to the display 1. After that, the release film layer 20 is peeled from the adhesive layer 30 together with the adhesive layer 40 while maintaining the aligned state, and the exposed adhesive layer 30 is attached to the display region of the display 1. In this way, by peeling the adhesive layer 40 from the display area after temporarily attaching the adhesive layer 40 to the display area, foreign matter such as dust adhering to the display area can be removed.
In this example, the slit 121 is formed so as to penetrate the release film layer 20, the adhesive layer 40, and the release film layer 50. After the release film layer 50 is peeled from the adhesive layer 40, a portion of the release film layer 20 separated at the notch 121 is bent or curved together with the adhesive layer 40. Thereby, as shown in fig. 10, the tip 127 of the part of the release film layer 20 is attached to the adhesive layer 40. As a result, the distal end portion 127 becomes a fixed end, and an annular projection 129 is formed. The annular protrusion 129 can be formed by bending or bending a part of the release film layer 20 into an arbitrary shape such as an arc shape or a rectangular shape.
When the protective film 100 is aligned with respect to the display 1, the edge of the projection 129 formed in a ring shape contacts the side surface 1B of the display 1. By forming the projection 129 in a ring shape, the strength of the projection 129 is increased, and the alignment can be further stably performed. In particular, the protrusion 129 can be formed by a simple operation of attaching the tip 127 of a part of the protective film 100 (release film layer 20) after bending or bending to the adhesive layer 40.
The above-described configuration can be adopted not only at the short sides of the release film layer 20 but also at the periphery of the notch 123 formed at each long side of the release film layer 20. The release film layer 20 may or may not have a guide portion such as the perforation 122.
The first embodiment shown in fig. 1 to 4, the first modification shown in fig. 5, and the second modification shown in fig. 6 and 7 can be applied to a dust-proof protective film 100 having a laminated structure such as the third modification. When the cuts 121 and 123 are formed in both the first release film layer 21 and the second release film layer 22, it is preferable that the directions in which the protrusions are formed by bending or bending the portions of the release film layer 20 separated at the cuts 121 (from left to right in fig. 1) are the same, and the directions in which the protrusions are formed by bending or bending the portions of the release film layer 20 separated at the cuts 123 (from below in fig. 1) are the same. In this case, when the undivided release film layer 50 is peeled from the adhesive layer 40 at one time, each of the projections formed in advance hardly constitutes a peeling resistance, and the release film layer 50 is easily peeled. In this regard, the same applies to the following second embodiment.
3. Second embodiment
Fig. 11 is a bottom view showing a structural example of a protective film 200 according to a second embodiment of the present invention. Fig. 12 is a bottom view showing a state in which a part of the release film layer 20 in the protective film 200 of fig. 11 is bent. In the present embodiment, the protrusions 225 and 226 are formed by bending or bending a part of the release film layer 20 separated at the cuts 221 and 223, which is the same as the first embodiment, but the positions of the cuts 221 and 223 are different from the first embodiment. Since the configuration other than the configuration of the periphery of the cutouts 221, 223 is the same as that of the first embodiment, the same reference numerals are given to the same configurations as those of the first embodiment in the drawings, and detailed description thereof is omitted.
The slit 221 formed on one short side of the release film layer 20 is not formed to extend from the short side, but is formed on the inner side (the central side of the release film layer 20) of the short side. The slit 221 is formed in a U-shape so as to extend in one direction along the short side direction D2 of the release film layer 20, then extend in the long side direction D1, and then extend in the opposite direction along the short side direction D2. Thereby, a part of the release film layer 20 separated at the notch 221 can be bent or curved. In the release film layer 20, an aperture 222 extending along the longitudinal direction D1 of the release film layer 20 is formed so as to connect both ends of the U-shaped slit 221.
The slit 223 formed on each long side of the release film layer 20 is not formed to extend from each long side, but is formed at a position further inward than each long side (the central side of the release film layer 20). Each slit 223 is formed in a U-shape so as to extend in one direction along the long side direction D1 of the release film layer 20, then extend in the short side direction D2, and then extend in the opposite direction along the long side direction D1. Thereby, a part of the release film layer 20 separated at each slit 223 can be bent or curved. In the release film layer 20, perforations 224 extending along the short side direction D2 of the release film layer 20 are formed so as to connect both ends of each of the U-shaped cuts 221.
When a portion of the release film layer 20 separated at the slits 221, 223 is bent or curved, the portion can be bent or curved along the perforations 222, 224. That is, the perforations 222 and 224 function as guides when bending or bending a portion of the release film layer 20. However, the guide portion is not limited to the perforation, and may be, for example, a recess, a simple mark, or the like, as long as it is a portion of the release film layer 20 that is easily bent or curved.
In the case where a part of the release film layer 20 separated at the cuts 221, 223 is bent from the state shown in fig. 11, as shown in fig. 12, protrusions 225, 226 protruding with respect to the remaining part of the release film layer 20 are formed (protrusion forming step). The protrusions 225 and 226 constitute alignment protrusions for aligning the protective film 200 with respect to the display 1.
The distance L2 between the pair of protrusions 226 formed on the long sides of the release film layer 20 is substantially the same as the width of the display 1 (the distance between the pair of opposed side surfaces 1A). The term "substantially the same" is a concept including not only the case where the distance L2 is the same as the width of the display 1 but also the case where the distance L2 is larger than the width of the display 1 by a few amounts (e.g., several mm or less).
Accordingly, as shown in fig. 12, the pair of protrusions 226 formed on the long sides of the release film layer 20 are brought into contact with the pair of side surfaces 1A of the display 1, whereby the protective film 200 can be aligned in the short side direction D2 with respect to the display 1 (alignment step). The position of the base film layer 10 in the short-side direction D2 with respect to the release film layer 20 corresponds to the position of the display region of the display 1 when the alignment is performed by the pair of protrusions 226.
When the protective film 200 is aligned with respect to the display 1, the side surfaces 1B of the display 1 other than the pair of side surfaces 1A are brought into contact with the protrusions 225 formed on the short sides of the release film layer 20. The position of the base film layer 10 in the longitudinal direction D1 with respect to the release film layer 20 corresponds to the position of the display region of the display 1 when the alignment is performed by the protrusions 225.
In this way, the alignment of the protective film 200 with respect to the display 1 is performed by bringing the protrusions 225 and 226 into contact with the side surfaces 1A and 1B of the display 1. At this time, the edges of the protrusions 225 and 226 are in contact with the side surfaces 1A and 1B of the display 1. That is, the extending direction of the protrusions 225 and 226 intersects (e.g., is orthogonal to) the side surfaces 1A and 1B with which the protrusions 225 and 226 are in contact.
4. Third embodiment
Fig. 13 is a bottom view showing a structural example of a protective film 300 according to a third embodiment of the present invention. Fig. 14 is a bottom view showing a state in which a part of the release film layer 20 in the protective film 300 of fig. 13 is bent. Fig. 15 is a side view of the protective film 300 in the state of fig. 14 viewed along the longitudinal direction D1. Fig. 16 is a side view of the protective film 300 in the state of fig. 14 viewed along the short-side direction D2. In this embodiment, the shape and position of incisions 321 and 323 are different from those of the first embodiment. Since the configuration other than the configuration around the cuts 321, 323 is the same as that of the first embodiment, the same reference numerals are given to the same configurations as those of the first embodiment in the drawings, and detailed description thereof is omitted.
Like the third modification shown in fig. 9, the protective film 100 according to the present embodiment is configured by stacking a base film layer 10, an adhesive layer (first adhesive layer) 30, a release film layer (first release film layer) 20, an adhesive layer (second adhesive layer) 40, and a release film layer (second release film layer) 50 in this order. Cuts 321 and 323 are formed so as to penetrate release film layer 20, adhesive layer 40, and release film layer 50. After the release film layer 50 is peeled from the adhesive layer 40, a part of the release film layer 20 separated at the cuts 321, 323 is bent or curved together with the adhesive layer 40.
The two cuts 321 formed on one short side of the release film layer 20 are formed at intervals in the short side direction D2 so as to extend straight from the short side along the long side direction D1 of the release film layer 20. Thereby, a part of the release film layer 20 between the two cuts 321 can be bent or curved. In the release film layer 20, perforations 322 extending along the short side direction D2 of the release film layer 20 are formed so as to connect the ends of the two cuts 321 to each other.
The slits 323 formed on the long sides of the release film layer 20 are formed at intervals in the long side direction D1 so as to extend in a straight line from the long sides along the short side direction D2 of the release film layer 20. Thereby, a part of the release film layer 20 between the two slits 323 in each long side can be bent or curved. In the release film layer 20, perforations 324 extending along the longitudinal direction D1 of the release film layer 20 are formed so as to connect the terminal ends of the two slits 323 in each longitudinal side to each other.
When a portion of the release film layer 20 separated at the cuts 321, 323 is bent or curved, the portion can be bent or curved along the perforations 322, 324. That is, the perforations 322, 324 function as guides when bending or bending a portion of the release film layer 20. However, the guide portion is not limited to the perforation, and may be, for example, a recess, a simple mark, or the like, as long as it is a portion of the release film layer 20 that is easily bent or curved.
When a part of the release film layer 20 separated at the cuts 321, 323 is bent from the state shown in fig. 13, projections 325, 326 projecting with respect to the remaining part of the release film layer 20 are formed as shown in fig. 14 (projection forming step). A portion of the release film layer 20 between two cuts 321 formed at the short side of the release film layer 20 is folded with the adhesive layer 40 as the inner side (the center side of the release film layer 20), thereby forming a protrusion 325. The protrusion 325 constitutes a positioning protrusion for positioning the protective film 300 with respect to the display 1. On the other hand, a part of the release film layer 20 between two cutouts 323 formed in each long side of the release film layer 20 is folded with the adhesive layer 40 as an outer side (a side opposite to the center side of the release film layer 20), thereby forming each protrusion 326. These protrusions 326 serve to hold the protective film 300 by touching with a finger by the user when the protective film 300 is aligned.
As shown in fig. 14 to 16, when the protective film 300 is aligned with respect to the display 1, the side surface 1B of the display 1 is in face-to-face contact with the surface of the protrusion 325 formed on the short side of the release film layer 20. At this time, the adhesive layer 40 in the protrusion 325 contacts and adheres to the side 1B of the display 1. The position of the base film layer 10 in the longitudinal direction D1 with respect to the release film layer 20 corresponds to the position of the display region of the display 1 when the alignment is performed by the protrusions 325.
In the present embodiment, when aligned, since the surface of the protrusion 325 is in face-to-face contact with the side surface 1B of the display 1, the contact area of the protrusion 325 with respect to the side surface 1B of the display 1 is large. Thus, the alignment can be performed with higher accuracy. In particular, when aligned, since the second adhesive layer 40 in the protrusion 325 adheres to the side surface 1B of the display 1, the position of the protective film 300 with respect to the display 1 is difficult to shift after alignment. Thus, the alignment can be performed with further high accuracy.
5. Other modifications
The alignment protrusion may be formed only on one of the long side and the short side of the release film layer 20. The alignment protrusion may be formed on another layer of the protective film 100, not limited to the release film layer 20.
Description of the reference numerals
1 display
1A side
1B side
10 substrate film layer
20. 50 release film layer
30. 40 adhesive layer
100. 200, 300 protective film
121. 123, 221, 223, 321, 323 incision
122. 124, 222, 224, 322, 324 eyelets
125. 126, 128, 129, 225, 226, 325, 326 protrusions
127 front end part
Claims (7)
1. A method for aligning a protective film for a display, comprising laminating a rectangular base film layer, a first adhesive layer formed on the surface of the base film layer, and a release film laminated on the first adhesive layer, wherein,
the alignment method of the protective film for the display comprises the following steps:
a protrusion forming step of forming a positioning protrusion by bending or bending a portion of the release film layer, which has a rectangular shape larger than the base film layer in an original state and is laminated in a state of protruding to a position outside the peripheral edge of the base film layer, the portion being separated along a slit formed in a short side or a long side of the rectangular shape; and
and a positioning step of positioning the display protection film with respect to the display by bringing the positioning protrusion into contact with a side surface of the display.
2. The alignment method of a protective film for a display according to claim 1, wherein in the alignment step, an edge of the alignment protrusion is brought into contact with a side surface of the display.
3. The alignment method of a protective film for a display according to claim 2, wherein in the protrusion forming step, an annular alignment protrusion is formed by inserting a tip end portion of a part of the peeled film layer after bending or bending into a slit formed in the peeled film layer.
4. The method for aligning a protective film for a display according to claim 2, wherein,
the protective film for a display includes a second adhesive layer formed on a surface of the release film layer on a side opposite to the first adhesive layer side,
in the protrusion forming step, a tip portion of the bent or curved portion of the release film layer is attached to the second adhesive layer, thereby forming an annular alignment protrusion.
5. The alignment method of a protective film for a display according to claim 1, wherein in the alignment step, a surface of the alignment protrusion is brought into face-to-face contact with a side surface of the display.
6. The method for aligning a protective film for a display according to claim 5, wherein,
the protective film for a display includes a second adhesive layer formed on a surface of the release film layer on a side opposite to the first adhesive layer side,
in the aligning step, the second adhesive layer in the aligning protrusion is adhered to a side surface of the display.
7. A protective film for a display, comprising a rectangular base film layer, a first adhesive layer formed on the surface of the base film layer, and a release film layer bonded to the first adhesive layer, wherein,
the release film layer has a rectangular shape larger than the base film layer in an original state, and is laminated in a state of protruding to a position outside the peripheral edge of the base film layer,
a notch for forming a protrusion for alignment by bending or bending a portion of the release film layer separated along the notch is formed in the release film layer within a short side or a long side of a rectangular shape.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-105126 | 2019-06-05 | ||
| JP2019105126A JP7280120B2 (en) | 2019-06-05 | 2019-06-05 | Protective film for display and alignment method thereof |
| PCT/JP2020/017192 WO2020246160A1 (en) | 2019-06-05 | 2020-04-21 | Protective film for display and method for aligning position of same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113678185A CN113678185A (en) | 2021-11-19 |
| CN113678185B true CN113678185B (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080028863.3A Active CN113678185B (en) | 2019-06-05 | 2020-04-21 | Protective film for display and alignment method thereof |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7280120B2 (en) |
| CN (1) | CN113678185B (en) |
| WO (1) | WO2020246160A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114408378B (en) * | 2022-01-25 | 2023-04-07 | 昆山联滔电子有限公司 | Membrane module and assembly method |
Citations (2)
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| CN105373189A (en) * | 2014-08-11 | 2016-03-02 | 巴法络股份有限公司 | Protective film composite and pasting method thereof |
| CN108189523A (en) * | 2018-02-07 | 2018-06-22 | 汇精（厦门）电子科技有限公司 | The production method and its production equipment of a kind of safeguard film for cellular phone |
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|---|---|---|---|---|
| JP2014002246A (en) * | 2012-06-18 | 2014-01-09 | Sanko Soken Kk | Protective film affixing tool, film laminate and protective film affixing set |
| US20140041799A1 (en) * | 2012-08-08 | 2014-02-13 | Joseph Nam | Apparatus and Method for Laying a Protective Film Cover on the Screen of a Mobile Electronic Device |
| CN203381811U (en) * | 2013-07-04 | 2014-01-08 | 梁肇飞 | Electronic tablet equipment laminating device |
| DE202014000383U1 (en) * | 2014-01-15 | 2014-02-07 | E.V.I. Gmbh | Protective device for displays and device for applying a protective film to a display |
| JP6338873B2 (en) * | 2014-02-04 | 2018-06-06 | Hoya株式会社 | Protective cover set |
| JP5733446B1 (en) * | 2014-03-26 | 2015-06-10 | 株式会社バッファロー | Method for applying protective film, positioning system for protective film, protective film composite, and method for manufacturing the same |
| JP2015203089A (en) * | 2014-04-16 | 2015-11-16 | 株式会社Ｉｄクリエイト | protective film for display |
| JP6310338B2 (en) * | 2014-06-23 | 2018-04-11 | 株式会社日立システムズ | Protective film with protective material, protective material, and adhesion method of protective film |
| KR20160012637A (en) * | 2014-07-25 | 2016-02-03 | 김경애 | Display protection film and attaching device of display protection film for portable electronic equipment |
| CN206048982U (en) * | 2016-08-16 | 2017-03-29 | 深圳秋田微电子有限公司 | Bending type is torn off part and the membrane material of part is torn off using the bending type |
| CN107825765A (en) * | 2017-09-27 | 2018-03-23 | 邓志军 | A kind of Mobile phone film and mobile phone positioning method for adhering film |
| CN209599845U (en) * | 2018-12-03 | 2019-11-08 | 东莞市荣博光电科技有限公司 | Sticking film for mobile phone with location structure |
| CN109735254A (en) * | 2018-12-28 | 2019-05-10 | 深圳市康成泰实业有限公司 | Pad pasting and method for adhering film |
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2019
- 2019-06-05 JP JP2019105126A patent/JP7280120B2/en active Active
-
2020
- 2020-04-21 CN CN202080028863.3A patent/CN113678185B/en active Active
- 2020-04-21 WO PCT/JP2020/017192 patent/WO2020246160A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105373189A (en) * | 2014-08-11 | 2016-03-02 | 巴法络股份有限公司 | Protective film composite and pasting method thereof |
| CN108189523A (en) * | 2018-02-07 | 2018-06-22 | 汇精（厦门）电子科技有限公司 | The production method and its production equipment of a kind of safeguard film for cellular phone |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020246160A1 (en) | 2020-12-10 |
| CN113678185A (en) | 2021-11-19 |
| JP7280120B2 (en) | 2023-05-23 |
| JP2020197671A (en) | 2020-12-10 |
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