CN111506224A - Laminating film for full-lamination product and preparation method thereof - Google Patents

Laminating film for full-lamination product and preparation method thereof Download PDF

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Publication number
CN111506224A
CN111506224A CN202010510638.5A CN202010510638A CN111506224A CN 111506224 A CN111506224 A CN 111506224A CN 202010510638 A CN202010510638 A CN 202010510638A CN 111506224 A CN111506224 A CN 111506224A
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Prior art keywords
film body
full
film
laminating
mask
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CN202010510638.5A
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Chinese (zh)
Inventor
林金汉
陈玲
施瑕玉
林俊良
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Changzhou Hanwei Polymer Co ltd
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Changzhou Hanwei Polymer Co ltd
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Priority to CN202010510638.5A priority Critical patent/CN111506224A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention discloses a bonding film for a full-bonding product and a preparation method thereof. Through the partial curing treatment of the laminating film body, the laminating film body is not easy to flow during vacuum hot pressing, the thickness uniformity of the laminating film can be effectively controlled, and the appearance quality is improved.

Description

Laminating film for full-lamination product and preparation method thereof
Technical Field
The invention relates to the technical field of laminating films, in particular to a laminating film for a full-lamination product and a preparation method thereof.
Background
With the progress of the times, the application of the touch screen is more and more extensive, the attaching process of the touch screen is an important link of the production flow of the touch screen, and the attaching precision and the appearance directly influence the quality and the yield of products.
The traditional bonding process mainly comprises two types: one is Optical Clear Adhesive (OCA) bonding, and the other is water clear adhesive (OCR) bonding, but the existing bonding process has many defects, many bubbles, high cost, difficult control of large-size bonding, low yield, incapability of repairing and very high waste protection cost.
In order to solve the problem, a plurality of manufacturers develop UV curing type optical hot melt adhesives, and defects exist after vacuum hot pressing and before UV curing, so that the hot melt adhesives can be easily repaired. However, the film has flowability during vacuum hot pressing, and is easy to have the problem of uneven thickness, particularly in large-size lamination, the problem is amplified particularly obviously, and appearance problems such as Newton rings, rainbow lines, Mura and the like are easy to occur.
In addition, some current display modules adopt liquid optical cement or liquid glue to laminate in the manufacture process, need realize through the mask version in the laminating process after partial precuring, carry out the full cure again, have following defect at least: (1) due to the characteristics of the liquid glue, the glue can be cured and laminated at the same time in the production process, batch laminated films cannot be prepared independently for later use, and the production efficiency is low; (2) for products with different shapes, different shapes of mask plates are needed, so that the mask plates are inconvenient to replace, poor in universality and capable of increasing the production and manufacturing cost. (3) When the liquid glue is partially pre-cured, foreign matters are easily adhered when the liquid glue moves left and right in the processing process, so that rework is caused.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, the invention provides the adhesive film for the full-lamination product, which is not easy to flow during vacuum hot pressing, can effectively control the thickness uniformity of the adhesive film and improve the appearance quality.
The invention also provides a preparation method of the laminating film for the full-laminating product, which is convenient to operate, simple in steps and capable of realizing batch production.
A conformable film for a fully-conformable product according to an embodiment of the first aspect of the present invention comprises: the laminated film comprises a laminated film body, wherein the laminated film body is formed into a sheet-shaped solid-state transparent optical adhesive piece, and the curing degree of one part of the laminated film body is greater than that of the other part of the laminated film body.
According to the laminating film for the fully laminated product, the laminating film body is not easy to flow during vacuum hot pressing through partial curing treatment of the laminating film body, firstly, the laminating thickness can be effectively controlled through the adoption of a local pre-curing structure, and the uniformity of the large-size laminating thickness is ensured; secondly, the laminating film is prepared independently, so that production in the laminating process of products is not needed, and the processing efficiency is improved; thirdly, in the using process of the laminating film, the laminating film with proper size and shape can be cut according to the product of practical application, and the application range is wide; in addition, in the preparation process of the laminating film body, the curing auxiliary tool does not need to be replaced frequently, and the production and manufacturing cost is reduced.
According to one embodiment of the present invention, a curing rate of a portion of the adhesive film body is 50% to 75%.
According to an embodiment of the present invention, the curing rate of the other part of the adhesive film body is 0%.
According to one embodiment of the invention, the thickness of the adhesive film body is 100 μm to 1000 μm.
According to one embodiment of the present invention, a portion of the adhesive film body includes a plurality of pre-curing area units formed in a circular, square or triangular shape.
The preparation method of the laminating film for the full-lamination product according to the embodiment of the second aspect of the invention comprises the following steps: and S1, locally and partially pre-curing the untreated bonding film body through a mask.
According to one embodiment of the present invention, the partial curing rate is 50% to 75% when the untreated conformable film body is subjected to the partial pre-partial curing treatment.
According to one embodiment of the invention, the thickness of the laminated film body is 100-1000 μm.
According to one embodiment of the present invention, the mask is an opaque plate having a porous structure.
According to an embodiment of the present invention, step S1 includes: s11, arranging the mask above the laminating film body; and S12, enabling UV light to penetrate through the holes of the mask plate to partially cure the adhesive film body in the corresponding area.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of an assembly of a bonding film and a mask for a full-face bonded product according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a mask according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a reticle according to yet another embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a reticle according to yet another embodiment of the present invention;
fig. 5 is a flowchart of a method of manufacturing a conformable film for a full-scale laminate according to an embodiment of the present invention.
Reference numerals:
a full-lamination-product lamination film 100;
a laminating film body 10;
a mask 20; and a hole 21.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 3, a conformable film 100 for a full-scale conformable product according to an embodiment of the present invention includes a conformable film body 10.
Specifically, the attachment film body 10 is formed as a sheet-shaped solid transparent optical adhesive member, and the degree of curing of one portion of the attachment film body 10 is greater than the degree of curing of the other portion of the attachment film body 10.
In other words, the adhesive film body 10 is formed as a sheet-shaped member and made of a solid transparent optical adhesive, and is a solid film, so that the individual processing and production of the adhesive film 100 can be facilitated. Because the degree of solidification of the part of laminating film body 10 is greater than the degree of solidification of the other part of laminating film body 10, consequently when laminating film body 10 on the product and carrying out vacuum hot pressing, when being directed against jumbo size product very much, laminating film body 10's mobility is less, appearance problems such as newton ring, rainbow line, Mura can not appear in addition to can effectively control the bubble quantity in the laminating process, this laminating film 100 for the product of laminating entirely has thickness homogeneity good, thickness advantage such as the control of being convenient for.
Therefore, according to the bonding film 100 for the full-bonding product, provided by the embodiment of the invention, the bonding film body 10 is subjected to partial curing treatment, so that the bonding film body 10 is not easy to flow during vacuum hot pressing, firstly, the bonding thickness can be effectively controlled by adopting a local pre-curing structure, and the uniformity of the large-size bonding thickness is ensured; secondly, the bonding film 100 is prepared independently, so that production in a product bonding process is not needed, and the processing efficiency is improved; thirdly, in the using process of the laminating film 100, the laminating film 100 with proper size and shape can be cut according to the product of practical application, and the application range is wide; in addition, in the preparation process of the laminating film body 10, the curing auxiliary tool does not need to be replaced frequently, and the production and manufacturing cost is reduced.
Preferably, the curing rate of a part of the bonding film body 10 is 50% -75%, the bonding film body 10 adopting the curing rate in the range has certain structural strength, can ensure thickness uniformity, is not cured completely, keeps a part of uncured state, and can ensure adhesiveness in the subsequent bonding curing process, thereby ensuring the reliability of the product.
In some embodiments of the present invention, the curing rate of the other portion of the bonding film body 10 is 0%, that is, only a portion of the bonding film body 10 needs to be processed during the preparation process of the bonding film body 10, so that the processing efficiency can be improved.
According to an embodiment of the present invention, the thickness of the conformable film body 10 is 100 μm to 1000 μm, and the thickness can be selected according to the actual situation according to different application products.
In some embodiments of the present invention, a portion of the conformable film body 10 includes a plurality of pre-cured area units formed in a circular, square, or triangular shape. The pre-curing area unit is not limited to a circular, square, or triangular shape, and the size and shape thereof may be appropriately changed according to the size and shape of the actual product.
Therefore, according to the bonding film 100 for the full bonding product of the embodiment of the invention, the thickness uniformity can be improved, bubbles can be conveniently discharged in the bonding process, and the mass production is facilitated.
The preparation method provided by the embodiment of the invention comprises the following steps: s1, the untreated bonded film body 10 is partially pre-cured by the mask 20. That is, in the preparation process, the mask 20 is first placed on the transparent optical adhesive, and then the bonding film body 10 is partially pre-cured, wherein the curing method may be heating or ultraviolet.
According to one embodiment of the present invention, the partial curing rate is 50% to 75% when the untreated conformable film body 10 is subjected to the partial pre-partial curing treatment.
Optionally, the thickness of the conformable film body 10 is 100 μm to 1000 μm, and the thickness may be selected according to the actual situation according to different application products.
Further, the mask 20 is an opaque plate with a porous structure, and by using the opacity of the mask 20, the portion of the attachment film body 10 covered by the mask 20 can be prevented from being cured, and the portion that is not covered can achieve the curing effect.
In some embodiments of the invention, step S1 includes: s11, arranging the mask 20 above the bonding film body 10; s12, the UV light is transmitted through the holes 21 of the mask 20 to partially cure the bonding film body 10 in the corresponding region. That is, the ultraviolet light may be used to cooperate with the mask 20 to achieve the partial curing of the adhesive film body 10.
It should be noted that the shape, size and arrangement of the holes 21 on the mask 20 are not limited to the structures mentioned in the above embodiments, and the idea of extending the present invention is protected by the present invention.
The following describes a bonding film 100 for a full-scale bonded product and a method for manufacturing the same according to an embodiment of the present invention with reference to specific examples.
Example 1
The main body 10 of the adhesive film is made of transparent optical adhesive without optical delay, has a thickness of 300 μm, and is shielded by using a mask plate shown in FIG. 2The UV light is partially pre-cured at an energy of 3000mj/cm2The partial curing rate was 65%.
Example 2
The adhesive film body 10 is made of optical delay-free transparent optical adhesive with a thickness of 250 μm, is shielded by using a mask plate shown in FIG. 3, and is partially UV pre-partially cured by matching with UV light, wherein the energy of partial curing is 2500mj/cm2The partial curing rate was 65%.
Example 3
The adhesive film body 10 is made of transparent optical adhesive without optical delay, has a thickness of 200 μm, is shielded by using a mask plate shown in FIG. 4, and is partially cured by UV light, wherein the energy of partial curing is 2000mj/cm2The partial curing rate was 65%.
Comparative example 1
The same optically delay-free transparent optical glue as used in examples 1 to 3 was used for the body of the laminating film, which had a thickness of 250 μm and was not subjected to any pretreatment.
Comparative example 2
The body of the laminated film is coated on the substrate by adopting the water glue with the same size as that used in the embodiment 1 to the embodiment 3, the peripheral sides are pre-cured to form the retaining wall, and the middle area is still in a liquid state.
Comparative example 3
The adhesive film body is coated on the substrate by using the same size of the aqueous gel used in the embodiments 1 to 3, and the alignment is performed by moving left and right when the substrate is adhered after the pre-curing.
Product performance testing
Using the adhesive film bodies used in examples 1, 2, 3 and comparative example 1, 86 'size GG full-adhesion samples and 55' size liquid crystal display samples were produced, respectively. Measuring the thickness of 86' samples, taking 81 same position points of each sample, and analyzing and comparing the data after the measurement to compare the thickness mean square deviation; the appearance and lighting test of the 55 'liquid crystal display screen sample is carried out, whether the problems of Newton's rings, rainbow patterns and Mura exist or not is observed, and the test result is shown in the following table 1. Examples 1, 2, 3 and comparative examples 2, 3 were compared, and the appearance results are shown in table 2.
TABLE 1 test results
Figure BDA0002528104930000061
Table 2 appearance comparison results
Example 1 Example 2 Example 3 Comparative example 2 Comparative example 3
Appearance of the product Good defect free Good defect free Good defect free Bubbles, cavities Bubbles, cavities
Yield of 99.5％ 99.7％ 99.8％ <50％ <60％
As can be seen from table 1, the appearance problems of newton rings, rainbow patterns, and the like appear in the appearance of the attachment film body which is not pretreated in comparative example 1, and as can be seen from table 2, the yield of the product obtained after the liquid adhesive is coated and the mask is shielded in comparative example 2 is low, and the product obtained after the liquid adhesive is coated and the mask is shielded in comparative example 3 is not convenient for alignment, and appearance defects easily appear after alignment.
In summary, according to the adhesive film for a full-lamination product and the preparation method thereof of the embodiment of the invention, the solid transparent optical adhesive member is used as the adhesive film body, the mask 20 is placed above the adhesive film body 10, and the pre-curing treatment is performed in cooperation with the irradiation of the UV light, so that not only can the lamination thickness be effectively controlled and the uniformity of the large-size lamination thickness be ensured, but also the mass production of the adhesive film 100 can be realized.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A full laminating is laminating film for product which characterized in that includes:
the laminated film comprises a laminated film body, wherein the laminated film body is formed into a sheet-shaped solid-state transparent optical adhesive piece, and the curing degree of one part of the laminated film body is greater than that of the other part of the laminated film body.
2. The adhesive film for a full-lamination product according to claim 1, wherein a curing rate of a part of the adhesive film body is 50 to 75%.
3. The adhesive film for a full-lamination product according to claim 1, wherein the curing rate of the other part of the adhesive film body is 0%.
4. The adhesive film for a full-lamination product according to claim 1, wherein the thickness of the adhesive film body is 100 μm to 1000 μm.
5. The conformable film for a full-lamination product according to claim 1, wherein a part of the conformable film body comprises a plurality of pre-cured area units formed in a circular, square or triangular shape.
6. A method of making a conformable film for use in a conformable product according to any of claims 1-5, comprising the steps of:
and S1, locally and partially pre-curing the untreated bonding film body through a mask.
7. The method of claim 6, wherein the partial cure rate is 50% to 75% when the untreated conformable film body is partially pre-partially cured.
8. The method of claim 6, wherein the conformable film body has a thickness of 100 μm to 1000 μm.
9. The method of claim 6, wherein the mask is an opaque sheet having a porous structure.
10. The method according to claim 9, wherein step S1 includes:
s11, arranging the mask above the laminating film body;
and S12, enabling UV light to penetrate through the holes of the mask plate to partially cure the adhesive film body in the corresponding area.
CN202010510638.5A 2020-06-08 2020-06-08 Laminating film for full-lamination product and preparation method thereof Pending CN111506224A (en)

Priority Applications (1)

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CN202010510638.5A CN111506224A (en) 2020-06-08 2020-06-08 Laminating film for full-lamination product and preparation method thereof

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Application Number Priority Date Filing Date Title
CN202010510638.5A CN111506224A (en) 2020-06-08 2020-06-08 Laminating film for full-lamination product and preparation method thereof

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