CN220335108U - OCA sticky tape for screen - Google Patents

Abstract

An OCA adhesive tape for a screen relates to the technical field of OCA optical cement. It includes from top to bottom in proper order: the optical film comprises a protective film layer, a heat conduction layer, an optical adhesive layer, a release film layer and a brightening layer arranged between the protective film layer and the optical adhesive layer. An anti-glare layer is further arranged between the protective film layer and the optical adhesive layer. And a stretching resistant layer is arranged below the release film layer. By adopting the technical scheme, the OCA adhesive tape has high light transmittance and good heat dissipation performance.

Description

OCA sticky tape for screen

Technical Field

The utility model relates to the technical field of OCA optical cement, in particular to an OCA adhesive tape for a screen.

Background

Optical adhesives are special adhesives used to bond transparent optical elements such as lenses. The adhesive is required to be colorless and transparent, has light transmittance of more than 90%, good cementing strength, can be cured at room temperature or medium temperature, and has the characteristics of small curing shrinkage and the like.

The optical adhesive is used as one of important components of the electronic touch screen, and the optical performance of the optical adhesive is particularly important for electronic products. At present, when the touch screen mobile phone and the touch screen flat plate are used (particularly when being charged), a large amount of heat can be generated, but the traditional OCA adhesive tape has no good heat conduction function, so that the heat dissipation effect of the mobile phone or the flat plate is insufficient, the faults caused by overheating of the mobile phone are easily caused, and meanwhile, the performance of the optical adhesive is also influenced by overheating. Therefore, an OCA tape with good optical performance and good heat dissipation effect is urgently needed.

Disclosure of Invention

Aiming at the defects and shortcomings of the prior art, the utility model provides an OCA adhesive tape for a screen, which has the advantages of good light transmittance and good heat dissipation.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an OCA tape for a screen, comprising, in order from top to bottom: a protective film layer, a heat conducting layer, an optical adhesive layer and a release film layer,

and a brightness enhancing layer disposed between the protective film layer and the optical adhesive layer.

The utility model further provides that an anti-glare layer is arranged between the protective film layer and the optical adhesive layer.

The utility model further provides that a stretching resistant layer is arranged below the release film layer.

The utility model further provides that the optical adhesive layer is a polyurethane acrylic resin sheet or an acrylic resin sheet.

The utility model further provides that the thickness of the optical adhesive layer is 12.5-75.0 micrometers.

The utility model further provides a transparent double-sided silica gel heat conduction gasket silica-based adhesive tape.

The utility model further provides that the thickness of the heat conducting layer is 25.0-100.0 micrometers.

The utility model further provides that the brightening layer is a brightening PET film.

The utility model further provides that the anti-glare layer is a polarizing film or an AG plate.

The utility model further provides that the stretch-resistant layer is a polyethylene sheet or a polypropylene sheet.

After the technical scheme is adopted, the utility model has the beneficial effects that:

1. according to the utility model, the heat conduction layer is arranged between the optical adhesive layer and the protective film layer, so that the heat dissipation performance of the OCA adhesive tape is greatly improved, and the situation that the electronic equipment is overheated is avoided.

2. In the utility model, a light increasing layer is arranged between the optical adhesive layer and the protective film layer so as to reduce light loss and ensure high light transmittance of the OCA adhesive tape.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a schematic structural view of the present utility model.

Reference numerals illustrate: 1. a protective film layer; 2. a heat conducting layer; 3. an anti-glare layer; 4. a brightness enhancing layer; 5. an optical adhesive layer; 6. a release film layer; 7. a stretch resistant layer.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explanation of the present utility model and is not to be construed as limiting the present utility model, and those skilled in the art can make modifications to the present embodiment which do not contribute to the utility model as required after reading the present specification, but are protected by the patent laws within the scope of the appended claims.

The embodiment relates to an OCA tape for a screen, as shown in fig. 1, comprising, in order from top to bottom: the protective film layer 1, the heat conduction layer 2, the optical adhesive layer 5 and the release film layer 6.

The protective film layer 1 is arranged on the uppermost layer of the OCA adhesive tape to protect the screen.

As a preferred embodiment, the protective film layer 1 is a PET protective film. The thickness of the protective film layer 1 is set between 25 and 100 micrometers.

The heat conduction layer 2 sets up between protection rete 1 and optics glue film 5, can be with on the protection rete 1 on the top layer of heat conduction layer 2 to promote the heat-conducting capacity of OCA sticky tape, OCA sticky tape can be good dispel the heat to electronic equipment when using, avoids equipment overheat to break down, causes even dangerous.

In this embodiment, the heat conducting layer 2 is a transparent double-sided silica gel heat conducting pad silicon-based adhesive tape, so that the heat conducting layer 2 has good heat conducting performance and good light transmittance. Of course, in other implementations, the heat conductive layer 2 may be made of other materials with excellent heat conductive properties and optical properties.

As a preferred solution, the thickness of the heat conducting layer 2 is set to 50 micrometers, however, in other embodiments, the thickness of the heat conducting layer 2 may be set to 25 micrometers, 30 micrometers, 35 micrometers, 40 micrometers, 45 micrometers, 55 micrometers, 60 micrometers, 65 micrometers, 70 micrometers, 75 micrometers, 80 micrometers, 85 micrometers, 90 micrometers, 95 micrometers, 100 micrometers, or the like.

The brightness enhancement layer 4 is further arranged between the protective film layer 1 and the optical adhesive layer 5, the film structure of the brightness enhancement layer 4 can concentrate light scattered by a light source to the front, and recycling of unutilized light outside a visual angle is realized through reflection of the light, so that light loss is reduced, and the optical performance of the OCA adhesive tape is improved. In this embodiment, as shown in fig. 1, the brightness enhancing layer 4 is disposed between the heat conductive layer 2 and the optical adhesive layer 5. In other implementations, the brightness enhancing layer 4 may also be disposed between the protective film layers 1 of the heat conducting layer 2, and the heat conducting layer 2 and the brightness enhancing layer 4 may also have corresponding effects.

As a preferred embodiment, the brightness enhancing layer 4 is a brightness enhancing PET film.

As a preferred embodiment, the thickness of the brightness enhancing layer 4 is set to 40 micrometers, although in other embodiments, the thickness of the brightness enhancing layer 4 may be set to 23 micrometers, 25 micrometers, 27 micrometers, 29 micrometers, 31 micrometers, 33 micrometers, 35 micrometers, 37 micrometers, 39 micrometers, 42 micrometers, 44 micrometers, 46 micrometers, 48 micrometers, 50 micrometers, etc.

In this embodiment, as shown in fig. 1, an anti-glare layer 3 is further disposed between the heat conducting layer 2 and the brightness enhancing layer 4, where the anti-glare layer 3 can reduce reflected light and scattered light of the screen, so as to improve the visual angle and definition of the display, and make the image clearer and more saturated in color, so as to improve the display efficiency. The anti-glare layer 3 is arranged above the brightness enhancement layer 4, so that the possible glare effect brought by the brightness enhancement layer 4 can be effectively avoided. Of course, in other embodiments, the antiglare layer 3 may be disposed at other positions between the protective film layer 1 and the optical adhesive layer 5, and the antiglare layer 3 still can exert such an effect.

As a preferable embodiment, the antiglare layer 3 is a polarizing film. Of course, in other implementations, other materials that achieve this effect, such as AG plates, may be used for the antiglare layer 3.

As a preferable embodiment, the thickness of the antiglare layer 3 is set to 60 micrometers, but of course, in other embodiments, the thickness of the antiglare layer 3 may be set to 50 micrometers, 55 micrometers, 65 micrometers, 70 micrometers, or the like.

The optical cement layer 5 is a part of the OCA adhesive tape used for adhering to a screen, and has good optical performance and strong cementing property. In the present embodiment, the optical adhesive layer 5 is a urethane acrylate resin sheet. Of course, in other embodiments. The optical adhesive layer 5 may be made of other materials such as an acrylic resin sheet.

As a preferred embodiment, the thickness of the optical adhesive layer 5 is set to 100 micrometers, however, in other embodiments, the thickness of the optical adhesive layer 5 may be set to 25 micrometers, 35 micrometers, 45 micrometers, 55 micrometers, 65 micrometers, 75 micrometers, 85 micrometers, 110 micrometers, 120 micrometers, 130 micrometers, 140 micrometers, 150 micrometers, 160 micrometers, 170 micrometers, 180 micrometers, 190 micrometers, 200 micrometers, or the like.

The release film layer 6 is disposed at the lower part of the optical adhesive layer 5 to protect the performance of the optical adhesive layer 5 when the OCA tape is not in use. As a preferable scheme, the release film layer 6 is a silicone oil release film layer, and the thickness of the release film layer 6 is set to be 12.5 micrometers-75 micrometers.

In this embodiment, a stretch-proofing layer 7 is further disposed below the release film layer 6, where the stretch-proofing layer 7 can play a role in fixing and protecting the OCA tape before use, so as to prevent the OCA tape from being deformed or damaged due to the influence of external force before use.

As a preferred embodiment, the stretch-resistant layer 7 is a polyethylene sheet or a polypropylene sheet, and the thickness of the stretch-resistant layer 7 is set to 15 to 50 μm.

The above description is only for the purpose of illustrating the technical solution of the present utility model and not for the purpose of limiting the same, and other modifications and equivalents thereof by those skilled in the art should be included in the scope of the claims of the present utility model without departing from the spirit and scope of the technical solution of the present utility model.

Claims (10)

1. An OCA tape for a screen, characterized by comprising, in order from top to bottom: the optical film comprises a protective film layer (1), a heat conducting layer (2), an optical adhesive layer (5), a release film layer (6) and a brightening layer (4) arranged between the protective film layer (1) and the optical adhesive layer (5).

2. OCA tape for a screen according to claim 1, characterized in that an anti-glare layer (3) is further provided between the protective film layer (1) and the optical adhesive layer (5).

3. OCA tape for screen according to claim 1, characterized in that a stretch-resistant layer (7) is also provided under the release film layer (6).

4. The OCA tape for a screen according to claim 1, wherein the optical adhesive layer (5) is a urethane acrylate type resin sheet or an acrylic type resin sheet.

5. OCA tape for screen according to claim 1, characterized in that the thickness of the optical glue layer (5) is 12.5-75.0 microns.

6. The OCA tape for a screen according to claim 1, wherein the heat conductive layer (2) is a transparent double-sided silicone heat conductive gasket silicone-based tape.

7. OCA tape for screen according to claim 1, characterized in that the thickness of the heat conducting layer (2) is 25.0-100.0 micrometers.

8. OCA tape for screen according to claim 1, characterized in that the brightness enhancing layer (4) is a brightness enhancing PET film.

9. The OCA tape for a screen according to claim 2, wherein the antiglare layer (3) is a polarizing film or an AG plate.

10. An OCA tape for a screen according to claim 3, characterized in that the stretch-resistant layer (7) is a polyethylene sheet or a polypropylene sheet.