Laser trimming optical film

Abstract

The embodiment of the utility model belongs to the technical field of optical films, and relates to a laser trimming optical film, which comprises an optical film OCA (Optical Clear Adhesive) layer, the optical film OCA layer is provided with a through hole site, an isolation part corresponding to the through hole site is attached to the optical film OCA layer, and the isolation part is used for isolating the optical film OCA layer falling off after the through hole site is subjected to laser trimming. According to the application, the isolation part is arranged at the through hole position of the optical film OCA adhesive layer, and the isolation part can isolate the through hole position area of the optical film OCA adhesive layer, so that the situation that the part, located at the through hole position, of the optical film OCA adhesive layer is trimmed by laser, falls off and is adhered to the bedplate to pollute the bedplate can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of optical films, and more specifically to a laser trimming optical film. Background Art

[0002] Optical film refers to a film that is plated or coated on an optical element and uses the principle of light interference to change the optical properties of the carrier. It is a layer or layers of dielectric film or metal film or a combination of these two types of films. This film can meet specific optical needs and is widely used in multiple downstream fields such as electronic display, architecture, automobiles, and new energy. According to different functions, optical films can be divided into reflective films, polarizers, diffusion films, brightness enhancement films, and filters. Among them, the backlight module composed of color filters, polarizers, diffusion films, and brightness enhancement films are all important components of TFT-LCD;

[0003] Currently, there are more and more touch screens, and a mainstream structure has been formed. For some touch screens with through holes, laser trimming solutions are used when they cannot be aligned. That is, the through holes are corrected by laser modification. This will cause the film layer at the through hole position to fall onto the table of the laser trimming equipment after laser trimming, and the OCA glue on the film layer will stick to the table, causing the optical film OCA to contaminate the table. Utility Model Content

[0004] The technical problem to be solved by the embodiments of the present utility model is that the film layer at the through hole position will fall onto the table of the laser trimming equipment after laser trimming, and the OCA glue on the film layer will stick to the table, causing the optical film OCA to contaminate the table.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A laser trimmed optical film comprises: an optical film OCA adhesive layer, wherein the optical film OCA adhesive layer has a through hole position, and an isolation part corresponding to the through hole position is attached to the optical film OCA adhesive layer, and the isolation part is used to isolate the optical film OCA adhesive layer that falls off after laser trimming at the through hole position.

[0007] As an improved manner of the present invention, the isolation portion is an isolation film, and the isolation film is attached to the optical film OCA adhesive layer.

[0008] As an improved manner of the utility model, the side of the optical film OCA adhesive layer away from the isolation film is connected to the optical film substrate, and the side of the optical film substrate away from the optical film OCA adhesive layer is provided with a first protective portion.

[0009] As an improved manner of the utility model, the first protective portion is a front heavy release film layer, and the front heavy release film layer is attached to a side of the optical film substrate away from the optical film OCA adhesive layer.

[0010] As an improved manner of the utility model, the front heavy release film layer is used for protecting the optical film substrate, and the front heavy release film layer and the optical film substrate are detachably arranged.

[0011] As an improved manner of the utility model, an anti-foolproofing portion is provided at a corner of the front heavy release film layer, and the anti-foolproofing portion is an anti-foolproofing slope, and the anti-foolproofing slope is provided at a corner of the optical film substrate.

[0012] As an improved manner of the utility model, it further comprises a second protective portion, wherein the second protective portion is arranged on a side of the optical film OCA adhesive layer away from the optical film substrate.

[0013] As an improved manner of the present invention, the second protective portion is a back-side light release film layer, and the back-side light release film layer is connected between the optical film OCA adhesive layer and the side of the isolation film away from the optical film substrate.

[0014] As an improvement of the utility model, the back light release film layer is used to protect the optical film OCA adhesive layer and the isolation film away from the side of the optical film substrate, and the back light release film layer and the optical film OCA adhesive layer and the isolation film are detachably arranged.

[0015] As an improvement of the utility model, the second protective part includes a back light release film layer, a side of the back light release film layer close to the optical film OCA adhesive layer is fixedly connected to an intermediate light release film layer, a side of the intermediate light release film layer close to the optical film OCA adhesive layer is connected to the optical film OCA adhesive layer, and a side of the back light release film layer close to the isolation film is connected to the isolation film.

[0016] Compared with the prior art, the embodiments of the present invention mainly have the following beneficial effects:

[0017] In order to solve the problem in the prior art that the film layer at the through hole position will fall onto the table top of the laser trimming equipment after laser trimming, and the OCA glue on the film layer will stick to the table top and cause the optical film OCA to contaminate the table top, the present application provides an isolation part at the through hole position of the optical film OCA glue layer. The isolation part can isolate the through hole position area of ​​the optical film OCA glue layer, and can reduce the situation where the part of the optical film OCA glue layer at the through hole position falls off after laser trimming and sticks to the table top to contaminate the table top. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of the laser trimming optical film provided in this application;

[0019] Figure 2 A schematic diagram of the structure of the laser trimming optical film provided in this application;

[0020] Figure 3A schematic diagram of the structure of the isolation film of the laser trimmed optical film provided in this application;

[0021] Figure 4 A schematic diagram of the structure of the isolation film of the laser trimmed optical film provided in this application;

[0022] Figure 5 A schematic diagram of the structure of the middle light release film layer of the laser trimming optical film provided in this application;

[0023] Figure 6 This is a schematic structural diagram of the middle light release film layer of the laser trimming optical film provided in this application.

[0024] Indicated in the figure:

[0025] 1. Optical film OCA adhesive layer; 101. Optical film substrate; 102. Front heavy release film layer; 103. Back light release film layer; 104. Middle light release film layer; 2. Isolation film; 3. Anti-slope. DETAILED DESCRIPTION

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Reference to "embodiments" herein means that specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] As described in the background technology, there are more and more touch screens currently, and a mainstream structure has been formed. For some touch screens with through holes, laser trimming solutions are used when they cannot be aligned. That is, the through holes are corrected by laser modification. This will cause the film layer at the through hole position to fall onto the table of the laser trimming equipment after laser trimming, and the OCA glue on the film layer will stick to the table and cause the optical film OCA to contaminate the table.

[0028] In order to solve this technical problem, the utility model provides a laser trimming optical film, which is applied to the protection of touch screens.

[0029] Specifically, please refer to Figure 1-Figure 4 , laser trimming optical film specifically includes:

[0030] The optical film OCA adhesive layer 1 has a through hole, and an isolation portion corresponding to the through hole is attached to the optical film OCA adhesive layer 1, and the isolation portion is used to isolate the optical film OCA adhesive layer 1 that falls off after laser trimming at the through hole.

[0031] The laser trimmed optical film provided by the utility model provides an isolation portion at the through hole position of the optical film OCA adhesive layer 1. The isolation portion can isolate the through hole position area of ​​the optical film OCA adhesive layer 1, thereby reducing the situation in which the portion of the optical film OCA adhesive layer 1 at the through hole position falls off after being laser trimmed and sticks to the table top, contaminating the table top.

[0032] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] Embodiment 1 of the laser trimming optical film of the utility model

[0036] like Figure 1-Figure 4 As shown, the laser-trimmed optical film of the utility model includes: an optical film OCA adhesive layer 1, the optical film OCA adhesive layer 1 has a through hole position, and an isolation part corresponding to the through hole position is attached to the optical film OCA adhesive layer 1, the isolation part is used to isolate the optical film OCA adhesive layer 1 that falls off after laser trimming at the through hole position, which can reduce the situation where the part of the optical film OCA adhesive layer 1 located at the through hole position falls off after laser trimming and sticks to the table top and contaminates the table top.

[0037] Further, such as Figure 1-Figure 4 As shown, the isolation part is an isolation film 2, and the isolation film 2 is attached to the optical film OCA adhesive layer 1. The adhesion of the isolation film 2 surface is low. When the back light release film layer 103 is torn off, the isolation film 2 will not be separated from the optical film OCA adhesive layer 1 under the drive of tearing off the back light release film layer 103. When the back light release film layer 103 is torn off, the optical film OCA adhesive layer 1 that falls off after laser trimming at the through-hole position can be isolated by the isolation film 2, which can reduce the situation where the part of the optical film OCA adhesive layer 1 located at the through-hole position falls off after laser trimming and sticks to the table plate to pollute the table plate;

[0038] OCA optical adhesive is one of the raw materials for touch screens. It is used to bond transparent optical components (such as lenses, etc.). It is a special double-sided adhesive with no substrate and optical transparency. OCA optical adhesive is required to be colorless and transparent, with a light transmittance of more than 90%, good bonding strength, can be cured at room temperature or medium temperature, and has small curing shrinkage. In addition, the advantages of OCA optical adhesive also include high cleanliness, high light transmittance, low haze, high adhesion, no crystal points, no bubbles, water resistance, high temperature resistance, UV resistance, etc., and its thickness is uniform and flat, and its refractive index is close to that of glass, PC, and PMMA. Long-term use will not cause yellowing, aging, fogging, detachment from the adhered surface, and bubbles.

[0039] OCA optical adhesive is divided into two categories: resistive and capacitive, and can be divided into different types according to thickness. In terms of application, OCA optical adhesive is widely used in touch screen manufacturing, optical instruments, solar cells and other fields.

[0040] In short, OCA optical adhesive, as a high-performance optical bonding material, has broad application prospects in many fields. Selecting high-quality OCA optical adhesive and using it reasonably can effectively improve the quality and reliability of the product.

[0041] Embodiment 2 of the laser trimming optical film of the utility model

[0042] like Figure 1-Figure 2 As shown, the laser trimmed optical film of the utility model further has an optical film substrate 101 connected to a side of the optical film OCA adhesive layer 1 away from the isolation film 2, and a first protective portion is provided on a side of the optical film substrate 101 away from the optical film OCA adhesive layer 1, and the first protective portion can protect the side of the optical film substrate 101 away from the optical film OCA adhesive layer 1.

[0043] Optical film substrate 101 materials mainly include the following:

[0044] Optical glass: the main material for manufacturing optical devices such as lenses and optical windows, with good optical and mechanical properties, high transparency, high chemical and physical uniformity, and specific and precise optical constants; optical glass can be divided into different types according to different classification methods; for example, it can be divided into crown type and flint type according to Abbe number, different types of glass according to refractive index, high dispersion and low dispersion glass according to dispersion, and glass for manufacturing different optical instruments such as telescopes, microscopes, cameras, etc. according to use; in addition, there are special-purpose glass types such as colored optical glass, radiation-resistant optical glass, ultraviolet and infrared optical glass;

[0045] Polyester film (PET): A commonly used plastic substrate, polyester film has many excellent properties; first, it has good transparency and gloss, and can be widely used in food packaging and printing fields; second, PET film has excellent mechanical properties, and its toughness is the best among all thermoplastics, and its tensile strength and impact strength are much higher than ordinary films, so it can be used to make composite films, metallized films, stretch films, etc.; in addition, PET film also has good heat resistance, cold resistance, chemical resistance and oil resistance, so that it can maintain good performance in various environments.

[0046] Polycarbonate (PC): It is a thermoplastic plastic. Polycarbonate has high impact strength, which makes it not easy to break when it is impacted by external force. Polycarbonate can be made into transparent or translucent materials, which are widely used in the manufacture of glasses, windows, lampshades, etc. Polycarbonate has good processing properties and can be processed into various shapes by injection molding, extrusion, blow molding and other molding processes. Polycarbonate can be used at higher temperatures without deformation or discoloration. Polycarbonate has good electrical insulation properties and can be used to manufacture electrical parts. Polycarbonate has good stability to chemicals such as acids, alkalis, and oils and is not easily corroded. Polycarbonate can reach flame retardant grades, making it safe to use in occasions that require fire protection. Polycarbonate has good fatigue resistance under cyclic loading and is suitable for manufacturing parts that need to withstand repeated loads. Some polycarbonate materials have good biocompatibility and can be used in the fields of medicine and bioengineering.

[0047] Further, such as Figure 1-Figure 2 As shown, the first protection portion is a front heavy release film layer 102 , and the front heavy release film layer 102 is attached to a side of the optical film substrate 101 away from the optical film OCA adhesive layer 1 .

[0048] Further, such as Figure 1-Figure 2 As shown, the front heavy release film layer 102 is used to protect the optical film substrate 101, and the front heavy release film layer 102 and the optical film substrate 101 are detachably arranged, that is, pulling the front heavy release film layer 102 can separate the front heavy release film layer 102 from the optical film substrate 101, thereby preventing the front heavy release film layer 102 from affecting the later use of the optical film substrate 101.

[0049] Further, such as Figure 4 As shown, an anti-foolproofing portion is provided at a corner of the front heavy release film layer 102, and the anti-foolproofing portion is an anti-foolproofing slope 3. The anti-foolproofing slope 3 is opened at a corner of the optical film substrate 101. The setting of the anti-foolproofing slope 3 can facilitate identification by the staff when taking it, so as to reduce the risk of wrong pasting.

[0050] Further, such as Figure 1-Figure 2As shown, it also includes a second protective part, which is arranged on a side of the optical film OCA adhesive layer 1 away from the optical film substrate 101 , and the second protective part can protect the side of the optical film OCA adhesive layer 1 away from the optical film substrate 101 .

[0051] Embodiment 3 of the laser trimming optical film of the utility model

[0052] like Figure 1-Figure 2 As shown, the laser trimmed optical film of the utility model further has a second protective portion which is a back-release film layer 103. The back-release film layer 103 is connected between the optical film OCA adhesive layer 1 and the side of the isolation film 2 away from the optical film substrate 101. The back-release film layer 103 is torn off during use so that the optical film OCA adhesive layer 1 can be attached to the corresponding touch screen.

[0053] Further, such as Figure 1-Figure 2 As shown, the back light release film layer 103 is used to protect the optical film OCA adhesive layer 1 and the isolation film 2 away from the optical film substrate 101, and the back light release film layer 103 and the optical film OCA adhesive layer 1 and the isolation film 2 are detachably arranged.

[0054] Embodiment 4 of the laser trimming optical film of the utility model

[0055] like Figure 5-Figure 6 As shown, the laser trimmed optical film of the utility model further comprises a second protective portion including a back light release film layer 103, a side of the back light release film layer 103 close to the optical film OCA adhesive layer 1 is fixedly connected with an intermediate light release film layer 104, a side of the intermediate light release film layer 104 close to the optical film OCA adhesive layer 1 is connected to the optical film OCA adhesive layer 1, and a side of the back light release film layer 103 close to the isolation film 2 is connected to the isolation film 2, and the provision of the intermediate light release film layer 104 can supplement the height difference between the isolation film 2 and the optical film OCA adhesive layer 1, so that the back light release film layer 103 is smoother after being attached, so as to reduce the situation where dust enters due to a gap left between the back light release film layer 103 and the optical film substrate 101.

[0056] When in use, first tear off the front heavy release film layer 102, and then attach the optical film substrate 101 to the touch screen. If there is an error in the through-hole alignment, use a laser trimming device to cut and trim the portion of the optical film substrate 101 corresponding to the isolation film 2. After cutting and trimming, tear off the remaining isolation film 2, and then attach the optical film substrate 101 as a whole to the touch screen. The cut optical film substrate 101 can reduce the contamination of the table under the protection of the isolation film 2 on it.

[0057] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A laser trimmed optical film, characterized in that: include: An optical film OCA adhesive layer (1), the optical film OCA adhesive layer (1) having a through hole position, and an isolation portion corresponding to the through hole position is attached to the optical film OCA adhesive layer (1), the isolation portion being used to isolate the optical film OCA adhesive layer (1) that falls off after laser trimming of the through hole position.

2. The laser-trimmed optical film according to claim 1, characterized in that: The isolation portion is an isolation film (2), and the isolation film (2) is attached to the optical film OCA adhesive layer (1).

3. The laser-trimmed optical film according to claim 2, characterized in that: The side of the optical film OCA adhesive layer (1) away from the isolation film (2) is connected to the optical film substrate (101), and the side of the optical film substrate (101) away from the optical film OCA adhesive layer (1) is provided with a first protective portion.

4. The laser-trimmed optical film according to claim 3, characterized in that: The first protective part is a front heavy release film layer (102), and the front heavy release film layer (102) is attached to a side of the optical film substrate (101) away from the optical film OCA adhesive layer (1).

5. The laser-trimmed optical film according to claim 4, characterized in that: The front heavy release film layer (102) is used to protect the optical film substrate (101), and the front heavy release film layer (102) and the optical film substrate (101) are detachably arranged.

6. The laser-trimmed optical film according to claim 5, characterized in that: An anti-fool-proof portion is provided at a corner of the front heavy release film layer (102), the anti-fool-proof portion is an anti-fool-proof slope (3), and the anti-fool-proof slope (3) is provided at a corner of the optical film substrate (101).

7. The laser-trimmed optical film according to claim 6, characterized in that: It also comprises a second protective portion, wherein the second protective portion is arranged on a side of the optical film OCA adhesive layer (1) away from the optical film substrate (101).

8. The laser-trimmed optical film according to claim 7, characterized in that: The second protective part is a back-side light release film layer (103), and the back-side light release film layer (103) is connected between the optical film OCA adhesive layer (1) and a side of the isolation film (2) away from the optical film substrate (101).

9. The laser-trimmed optical film according to claim 8, characterized in that: The back-side light release film layer (103) is used to protect the side of the optical film OCA adhesive layer (1) and the isolation film (2) away from the optical film substrate (101), and the back-side light release film layer (103) and the optical film OCA adhesive layer (1) and the isolation film (2) are detachably arranged.

10. The laser-trimmed optical film according to claim 7, characterized in that: The second protective part comprises a back-side light-release film layer (103), a side of the back-side light-release film layer (103) close to the optical film OCA adhesive layer (1) is fixedly connected to an intermediate light-release film layer (104), a side of the intermediate light-release film layer (104) close to the optical film OCA adhesive layer (1) is connected to the optical film OCA adhesive layer (1), and a side of the back-side light-release film layer (103) close to the isolation film (2) is connected to the isolation film (2).

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