CN110628338B - Adhesive film structure - Google Patents
Adhesive film structure Download PDFInfo
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- CN110628338B CN110628338B CN201910942906.8A CN201910942906A CN110628338B CN 110628338 B CN110628338 B CN 110628338B CN 201910942906 A CN201910942906 A CN 201910942906A CN 110628338 B CN110628338 B CN 110628338B
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- protective layer
- layer
- adhesive
- adhesive layer
- film structure
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/40—Adhesives in the form of films or foils characterised by release liners
- C09J7/403—Adhesives in the form of films or foils characterised by release liners characterised by the structure of the release feature
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
Abstract
The invention provides an Adhesive film structure, which solves the problems that the OCA (optical Clear Adhesive) is warped due to the phenomena of collision and the like in the transportation process, the warping generates deformation after extending to an Adhesive area, and the Adhesive area generates bubbles and the like due to the weak packaging structure of the existing OCA. The method comprises the following steps: a first protective layer; a second protective layer disposed at one side of the first protective layer; the adhesive layer is arranged between the first protective layer and the second protective layer, the area of the adhesive layer is smaller than that of the first protective layer, the area of the adhesive layer is smaller than that of the second protective layer, and the peripheries of the first protective layer and the second protective layer are in contact; and a part of the first protective layer, which is in contact with the second protective layer, is provided with a through hole, wherein the through hole penetrates through the first protective layer and the second protective layer.
Description
Technical Field
The invention relates to the technical field of laminating, in particular to an adhesive film structure.
Background
With the development of science and technology, flexible display devices are favored by more and more users. In the manufacturing process of the flexible display device, a cover plate and a screen body are generally attached together by using a flexible Clear Adhesive (OCA), and the thickness of the flexible OCA is thinner than that of a conventional OCA.
Disclosure of Invention
In view of this, the embodiment of the present invention provides an adhesive film structure, which solves the problems that the existing OCA packaging structure is weak, the OCA is warped due to collision and other phenomena during transportation, and the warpage extends to an adhesive area and then deforms, so that the adhesive area generates bubbles and other phenomena.
An embodiment of the present invention provides an adhesive film structure, including: a first protective layer; a second protective layer disposed on one side of a surface of the first protective layer; the adhesive layer is arranged between the first protective layer and the second protective layer, the area of the adhesive layer is smaller than that of the first protective layer, the area of the adhesive layer is smaller than that of the second protective layer, and the peripheries of the first protective layer and the second protective layer are in contact; and a part of the first protective layer, which is in contact with the second protective layer, is provided with a through hole, wherein the through hole penetrates through the first protective layer and the second protective layer.
In one embodiment, the perforations are arranged at a predetermined distance outside the corners of the adhesive layer.
In one embodiment, the perforations are arranged at a predetermined distance outside the edge of the adhesive layer.
In one embodiment, the adhesive layer is rectangular, and the portion of the first protective layer in contact with the second protective layer is provided with a plurality of perforations, wherein the perforations are respectively arranged outside the boundary of the adhesive layer according to a preset distance.
In one embodiment, the perforations are semi-annular in shape.
In one embodiment, the corners of the first protective layer are rounded; and the corner of the second protective layer is a fillet.
In one embodiment, the radius of the rounded corner is 90 degrees.
In one embodiment, the edges of the first protective layer and the second protective layer are flush.
In one embodiment, the first protective layer and the adhesive layer are attached; the second protective layer is attached to the adhesive layer.
In one embodiment, the adhesive layer is an OCA film.
According to the adhesive film structure provided by the embodiment of the invention, the adhesive layer is arranged between the first protective layer and the second protective layer, the peripheries of the first protective layer and the second protective layer are contacted, so that the adhesive layer is wrapped by the first protective layer and the second protective layer, and the part where the first protective layer is contacted with the second protective layer is provided with the through hole penetrating through the first protective layer and the second protective layer, the through hole can block the collision stress from extending to the position of the adhesive layer, so that the first protective layer and the second protective layer are prevented from warping due to the impact of an external force in the carrying process of the adhesive film structure, and further, bubbles are generated between the first protective layer and the adhesive layer or between the second protective layer and the adhesive layer, so that the adhesive film structure cannot be used and is wasted.
Drawings
Fig. 1 is a schematic structural diagram of an adhesive film structure according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an adhesive film structure according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of an adhesive film structure according to an embodiment of the present invention. Fig. 2 is a schematic structural diagram of an adhesive film structure according to another embodiment of the present invention.
As shown in fig. 1 and 2, the adhesive film structure includes a first protective layer 1, a second protective layer 2, and an adhesive layer 3. The second protective layer 2 is disposed on one side of the surface of the first protective layer 1, and the adhesive layer 3 is disposed between the first protective layer 1 and the second protective layer 2. The adhesive layer 3 may be an adhesive material for bonding the various film layers of the display device together. First protective layer 1 and second protective layer 2 set up respectively in the both sides on adhesive layer 3 surface, and first protective layer 1 and second protective layer 2 play the guard action to adhesive layer 3's both sides, can prevent that the dust from adhering on adhesive layer 3, also can prevent that adhesive layer 3 from damaging in the transportation. The area of the adhesive layer 3 can be smaller than that of the first protective layer 1, the area of the adhesive layer 3 can be smaller than that of the second protective layer 2, and the peripheries of the first protective layer 1 and the second protective layer 2 are in contact with each other, so that the adhesive layer 3 is wrapped between the first protective layer 1 and the second protective layer 2. Wherein, the contact part of the first protective layer 1 and the second protective layer 2 is provided with a perforation 4, and the perforation 4 penetrates through the first protective layer 1 and the second protective layer 2. The adhesive layer 3 is arranged between the first protective layer 1 and the second protective layer 2, the peripheries of the first protective layer 1 and the second protective layer 2 are contacted, so that the adhesive layer 3 is wrapped by the first protective layer 1 and the second protective layer 2, a perforation 4 penetrating through the first protective layer 1 and the second protective layer 2 is arranged at the contact part of the first protective layer 1 and the second protective layer 2, the perforation 4 can block the collision stress from extending to the position of the adhesive layer 3, and the first protective layer 1 and the second protective layer 2 are warped due to the impact of external force in the process of carrying the adhesive film structure, so that bubbles are generated between the first protective layer 1 and the adhesive layer 3 or between the second protective layer 2 and the adhesive layer 3, because the adhesive layer 3 can be used for bonding each film layer of the display device and plays a role of isolating water and oxygen, after bubbles are generated, oxygen and water enter the adhesive layer 3, thereby causing the adhesive film structure to be unusable and causing waste.
It is understood that the Adhesive layer 3 may be an acrylic double-sided tape, such as an OCA (Optically Clear Adhesive), and the like, the Adhesive layer 3 may also be other materials, and the specific material of the Adhesive layer 3 may be selected, and the specific material of the Adhesive layer 3 is not limited in the present invention.
It can also be understood that the adhesive film structure can be used for bonding a touch screen and a display panel, and can also be used for bonding other film layers, the specific use of the adhesive film structure can be selected, and the specific use of the adhesive film structure is not limited in the invention.
It is also understood that the number of the perforations 4 may be one or more, the number of the perforations 4 may be selected according to actual product requirements, and the specific number of the perforations 4 is not limited by the present invention.
In an embodiment of the invention, the perforations 4 are arranged at a predetermined distance outside the corners of the adhesive layer 3. The perforation 4 is arranged at the position where the first protection layer 1 and the second protection layer 2 are contacted, and the projection of the perforation 4 on the first protection layer has a preset distance from the projection of the adhesive layer 3 on the first protection layer 1. Because, the turning of glued membrane structure is in the easy emergence of the handling and collides with, lead to first protective layer 1 or the 2 warpages of second protective layer, set up perforation 4 in the corner of adhesive layer 3 according to the default distance, can disperse the position that collision stress extends to adhesive layer 3, prevent that the turning of glued membrane structure is in the in-process of handling, because the impact that receives external force takes place the warpage, and then make the corner between first protective layer 1 and the adhesive layer 3 or the corner between second protective layer 2 and the adhesive layer 3 produce the bubble, because adhesive layer 3 can be used to bond each rete of display device, and play isolated water oxygen's effect, after producing the bubble, oxygen and water get into adhesive layer 3, thereby lead to glued membrane structure unable the use, cause the waste.
It can be understood that the preset distance can be set according to actual product requirements, and the specific numerical value of the preset distance is not limited by the invention.
In an embodiment of the present invention, the through holes 4 are disposed at the outer side of the edge of the adhesive layer 3 according to a predetermined distance, the through holes 4 are disposed at the position where the first protective layer 1 and the second protective layer 2 contact each other, and the projection of the through holes 4 on the first protective layer is a predetermined distance from the projection of the adhesive layer 3 on the first protective layer 1. With perforation 4 according to the outside on the limit of preset distance setting at adhesive layer 3, can disperse collision stress and extend to adhesive layer 3's position, prevent the edge of glued membrane structure at the in-process of transport, because the impact that receives external force takes place the warpage, and then make between first protective layer 1 and adhesive layer 3 or between second protective layer 2 and adhesive layer 3 at the edge production bubble, because adhesive layer 3 can be used for bonding each rete of display device, and play isolated water oxygen's effect, after the production bubble, oxygen and water get into adhesive layer 3, thereby lead to the glued membrane structure unable use, cause the waste.
It can be understood that the preset distance can be set according to actual product requirements, and the specific numerical value of the preset distance is not limited by the invention.
In an embodiment of the present invention, the number of the through holes 4 may be multiple, the multiple through holes 4 may be distributed at a contact portion between the first protection layer 1 and the second protection layer 2 according to a preset manner, a projection of the multiple through holes 4 on the first protection layer 1 is distributed at a preset distance from a projection of the adhesive layer 3 on the first protection layer 1, and a projection of the multiple through holes 4 on the first protection layer 1 is distributed outside a boundary of a projection of the adhesive layer 3 on the first protection layer 1. The number and distribution of the perforations 4 can be set according to actual product requirements, and the number and distribution of the perforations 4 are not limited in the present invention.
In an embodiment of the present invention, the adhesive layer 3 may be rectangular, and a portion of the first protective layer 1, which is in contact with the second protective layer 2, is provided with four through holes 4, wherein the four through holes 4 are respectively disposed at outer sides of four corners of the adhesive layer 3 according to a predetermined distance, in other words, the four through holes 4 are respectively disposed at positions of the four corners of a projection of the adhesive layer 3 on the first protective layer 1 or the second protective layer 2, and a projection of the four through holes 4 on the first protective layer 1 is a predetermined distance from an outer side of the corner of the projection of the adhesive layer 3 on the first protective layer 1. All set up perforation 4 in the position of every angle of adhesive layer 3 projection on first protective layer 1 or second protective layer 2, and perforation 4 has the predetermined distance apart from the projection of adhesive layer 3 on first protective layer 1, can protect every corner of glued membrane structure, prevent because the collision in the in-process of transportation, make first protective layer 1 and second protective layer 2 take place the warpage, lead to first protective layer 1 and adhesive layer 3, the part of second protective layer 2 and adhesive layer 3 contact produces the bubble, because adhesive layer 3 can be used to bond each rete of display device, and play the effect of isolated water oxygen, after producing the bubble, oxygen and water get into adhesive layer 3, thereby lead to the glued membrane structure to be unable to use, cause the waste.
In an embodiment of the present invention, the through hole 4 may be semi-annular. The use of semi-annular perforations 4 allows to better alleviate and distribute the impact stresses,
it is understood that the circumference and width of the semi-circular shape of the perforation 4 can be set according to practical situations, and the invention does not limit the radian and width of the perforation 4.
In an embodiment of the present invention, the corner of the first passivation layer 1 may be a rounded corner, and the corner of the second passivation layer 2 may also be a rounded corner. The first passivation layer 1 may have a rectangular shape with four rounded corners, and the second passivation layer 2 may also have a rectangular shape with four rounded corners. The first protective layer 1 and the second protective layer 2 may be identical in size and shape, and the peripheral edge of the first protective layer 1 and the peripheral edge of the second protective layer 2 may be completely overlapped. Set the corner with first protective layer 1 and second protective layer 2 to the fillet, can alleviate and disperse collision stress, prevent the glued membrane structure at the in-process of transport, owing to receive the impact of external force, make first protective layer 1 and second protective layer 2 take place the warpage, and then make the part of contact between first protective layer 1 and the adhesive layer 3 or the part of contact between second protective layer 2 and the adhesive layer 3 produce the bubble, because adhesive layer 3 can be used to bond each rete of display device, and play the effect of isolated water oxygen, after the production bubble, oxygen and water get into adhesive layer 3, thereby lead to the glued membrane structure unable use, cause the waste.
It can be understood that the corner may be a rounded corner, wherein the radian of the rounded corner may be 90 degrees, and may also be other radians, and the radian of the rounded corner may be set according to the actual situation, and the specific radian of the rounded corner is not limited by the present invention.
It can also be understood that the size and shape of the first protection layer 1 and the second protection layer 2 may be completely the same, and the peripheral edge of the first protection layer 1 and the peripheral edge of the second protection layer 2 may be completely overlapped, so as to prevent the first protection layer 1 and the second protection layer 2 from warping and affecting the use of the adhesive film structure. The size and shape of the first protective layer 1 and the second protective layer 2 may be different, and the peripheral edge of the first protective layer 1 may also be larger than the peripheral edge of the second protective layer 2, or the peripheral edge of the first protective layer 1 may also be smaller than the peripheral edge of the second protective layer 2, so that the first protective layer 1 or the second protective layer 2 is conveniently torn off from the adhesive layer 3 during the attaching process. The size and shape of the first protective layer 1 and the second protective layer 2 may be set according to actual conditions, and whether the peripheral edge of the first protective layer 1 and the peripheral edge of the second protective layer 2 completely overlap or not may also be set according to actual conditions.
In one embodiment of the present invention, the first protective layer 1 is attached to the adhesive layer 3, and the second protective layer 2 is attached to the adhesive layer 3. Because adhesive layer 3 can have the adhesion, the adhesion of accessible adhesive layer 3 self is with the laminating of first protective layer 1 and second protective layer 2 in the both sides of adhesive layer 3, it is fixed with the laminating of adhesive layer with first protective layer 1, adhesive layer 3 and second protective layer 2, can prevent at the in-process of transport, the change of position appears between first protective layer 1, adhesive layer 3 and the 2 adhesive layers of second protective layer, lead to first protective layer 1 and second protective layer 2 can not play the guard action to adhesive layer 3, thereby influence the use of glued membrane structure.
It can be understood that the first protective layer 1 and the adhesive layer 3 can be fixed together by means of adhesive bonding or electrostatic adsorption, the second protective layer 2 and the adhesive layer 3 can be fixed together by means of adhesive bonding or electrostatic adsorption, and the fixing modes between the first protective layer 1 and the adhesive layer 3 and between the second protective layer 2 and the adhesive layer 3 can be set according to actual requirements, and the fixing modes between the first protective layer 1 and the adhesive layer 3 and between the second protective layer 2 and the adhesive layer 3 are not limited in the present invention.
It should be further understood that the first protection layer 1 and the second protection layer 2 may or may not be fixed to each other, whether the first protection layer 1 and the second protection layer 2 are fixed to each other may be selected according to actual product requirements, and whether the first protection layer 1 and the second protection layer 2 are fixed to each other is not limited in the present invention.
It can be further understood that the first protection layer 1 and the second protection layer 2 can be fixed together by means of adhesive bonding or electrostatic adsorption, and the fixing manner between the first protection layer 1 and the second protection layer 2 can be set according to actual requirements, and the fixing manner between the first protection layer 1 and the second protection layer 2 is not limited in the present invention.
In an embodiment of the present invention, the adhesive film structure includes a first protection layer 1, a second protection layer 2 and an adhesive layer 3. Wherein the adhesive layer 3 is arranged between the first protective layer 1 and the second protective layer 2, the areas of the first protective layer 1 and the second protective layer 2 are both larger than the area of the adhesive layer 3, and the peripheries of the first protective layer 1 and the second protective layer 2 are in contact. A through hole 4 is arranged at the position where the first protection layer 1 and the second protection layer 2 are contacted, the projection of the through hole 4 on the first protection layer 1 is arranged at the outer side of the corner of the projection of the adhesive layer 3 on the first protection layer 1, and the projection of the through hole 4 on the first protection layer 1 has a preset distance from the outer side of the corner of the projection of the adhesive layer 3 on the first protection layer 1. For example, when the adhesive film structure is used for attaching a display screen body and a cover plate, the first protective layer 1 can be torn off from the adhesive layer 3, one side with the adhesive layer 3 is attached to the display screen body, the attached display screen body, the adhesive layer 3 and the second protective layer 2 are conveyed to the position of the attached cover plate, the second protective layer 2 is torn off, the cover plate is attached to the adhesive layer 3, and then the structure of the cover plate-the adhesive layer 3-the display screen body is formed. Because the process of carrying the adhesive film structure and the display screen body, the adhesive layer 3 and the second protective layer 2 exists, the second protective layer 2 is easy to collide in the carrying process to cause the deformation of the second protective layer 2, and the air bubble phenomenon is easy to appear at the position of the adhesive layer 3, therefore, the adhesive layer 3 is arranged between the first protective layer 1 and the second protective layer 2, the peripheries of the first protective layer 1 and the second protective layer 2 are contacted, the first protective layer 1 and the second protective layer 2 wrap the adhesive layer 3, a perforation 4 penetrating through the first protective layer 1 and the second protective layer 2 is arranged at the contact part of the first protective layer 1 and the second protective layer 2, the perforation 4 can block the collision stress from extending to the position of the adhesive layer 3, and the adhesive film structure is prevented from warping due to the impact of external force in the carrying process, and then make the part of contact between first protective layer 1 and the adhesive layer 3 or the part of contact between second protective layer 2 and the adhesive layer 3 produce the bubble, because adhesive layer 3 can be used for bonding each rete of display device to play the effect of isolated water oxygen, after producing the bubble, oxygen and water get into adhesive layer 3, thereby lead to the glued membrane structure unable use, cause the waste.
It is understood that the first protection layer 1 may be torn off first, or the second protection layer 2 may be torn off first, and the tearing sequence of the first protection layer 1 and the second protection layer 2 may be selected, and the tearing sequence of the first protection layer 1 and the second protection layer 2 is not limited in the present invention.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and the like that are within the spirit and principle of the present invention are included in the present invention.
Claims (10)
1. An adhesive film structure, comprising:
a first protective layer;
a second protective layer disposed on one side of a surface of the first protective layer;
the adhesive layer is arranged between the first protective layer and the second protective layer, the area of the adhesive layer is smaller than that of the first protective layer, the area of the adhesive layer is smaller than that of the second protective layer, and the peripheries of the first protective layer and the second protective layer are in contact; and
the contact part of the first protective layer and the second protective layer is provided with a perforation, wherein the perforation penetrates through the first protective layer and the second protective layer.
2. The adhesive film structure according to claim 1, wherein the perforations are provided at predetermined distances outside corners of the adhesive layer.
3. Adhesive film structure according to claim 1, wherein the perforations are arranged at a predetermined distance outside the edge of the adhesive layer.
4. The adhesive film structure of claim 1, wherein the adhesive layer is rectangular, and a plurality of through holes are formed in a portion where the first protective layer and the second protective layer are in contact with each other, wherein the plurality of through holes are respectively formed outside a boundary of the adhesive layer at a predetermined distance.
5. The adhesive film structure of claim 1, wherein the perforations are semi-annular in shape.
6. The adhesive film structure of claim 1, wherein the corners of the first protective layer are rounded;
and the corner of the second protective layer is a fillet.
7. The adhesive film structure of claim 6, wherein the arc of the rounded corner is 90 degrees.
8. The adhesive film structure of claim 1, wherein edges of the first protective layer and the second protective layer are flush.
9. The adhesive film structure of claim 1, wherein the first protective layer is attached to the adhesive layer;
the second protective layer is attached to the adhesive layer.
10. The adhesive film structure of claim 1, wherein the adhesive layer is OCA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910942906.8A CN110628338B (en) | 2019-09-30 | 2019-09-30 | Adhesive film structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910942906.8A CN110628338B (en) | 2019-09-30 | 2019-09-30 | Adhesive film structure |
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| Publication Number | Publication Date |
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| CN110628338A CN110628338A (en) | 2019-12-31 |
| CN110628338B true CN110628338B (en) | 2022-03-01 |
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| CN201910942906.8A Active CN110628338B (en) | 2019-09-30 | 2019-09-30 | Adhesive film structure |
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| CN201593033U (en) * | 2009-06-30 | 2010-09-29 | 陈永巧 | PVC inkjet-printing silk-screen punching single-transparent paste |
| CN106772720A (en) * | 2016-12-06 | 2017-05-31 | 四川龙华光电薄膜股份有限公司 | Visual angle margining tablet and its manufacture method |
| CN207143169U (en) * | 2017-05-27 | 2018-03-27 | 蓝思科技（长沙）有限公司 | A kind of antiacid diaphragm group easily torn |
| CN107245304B (en) * | 2017-07-20 | 2023-05-05 | 东莞市纳利光学材料有限公司 | OCA optical adhesive film and manufacturing process thereof |
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