CN112389123A - Optical film and electronic device case - Google Patents

Abstract

The invention relates to the technical field of optical films, in particular to an optical film and an electronic equipment shell. The optical film comprises a body, wherein a first texture structure and a second texture structure are arranged on a first surface of the body; the first texture feature and the second texture feature are configured to engage to form a third texture. The first texture structure and the second texture structure in the optical film are arranged in an occlusion mode to form a third texture, so that not only can a light and shadow effect be seen, but also the third texture can be seen when the optical film is viewed; meanwhile, only the first texture structure and the second texture structure are arranged on the first surface of the body, and compared with the case that the first texture structure and the second texture structure are respectively arranged on the upper surface and the lower surface of the body, the technical scheme provided by the invention simplifies the manufacturing process difficulty and reduces the thickness of the body, thereby reducing the production cost and ensuring that the optical film is easier to cut off during hot stamping.

Description

Optical film and electronic device case

Technical Field

The invention relates to the technical field of optical films, in particular to an optical film and an electronic equipment shell.

Background

At present, the consumer electronics industry develops faster and faster, and various manufacturers continuously seek technical innovation and functional innovation to meet the development trends of environmental protection, energy conservation and differentiation. The design of consumer electronics products has not been limited to functional perfection, and many designers have focused on the design of the appearance of consumer electronics products. Taking a mobile phone as an example, the mobile phone cover plate not only plays a role in protecting parts inside the mobile phone, but also plays a role in beautifying and decorating the mobile phone, and the design of the mobile phone cover plate with excellent decoration effect can not only increase the value of the mobile phone, but also improve the use experience of users, and increase the selection range of the users for the appearance of the mobile phone, so that the mobile phone is popular with more users.

However, the current decoration design of the mobile phone cover plate focuses on the replacement of materials (such as glass, metal, plastic) or the replacement of a single color of a color layer, which results in a single vision and an insufficient vivid picture, thereby causing a poor decoration effect.

Therefore, there is a need for an optical film and an electronic device housing to solve the above problems.

Disclosure of Invention

The invention provides an optical film and an electronic device shell, and aims to solve at least one technical problem.

The invention provides an optical film, which comprises a body, wherein a first texture structure and a second texture structure are arranged on a first surface of the body;

the first texture feature and the second texture feature are configured to engage to form a third texture.

Preferably, there is a difference in at least one of type, length, width, height, angle, density, arc, inclination and period of the first texture and the second texture.

Preferably, the engaging portions of the first texture and the second texture are arranged at intervals or continuously.

Preferably, the engaging portions of the first and second texturing have a raised structure.

Preferably, the protruding structures and the first texture structures and the protruding structures and the second texture structures are arranged at intervals or continuously.

Preferably, the cross-sectional shapes of the first texture feature and the second texture feature include one or more of a triangle, an arch, a rectangle, an inverted trapezoid, and an irregular polygon.

Preferably, the first texture structure comprises at least one of a linear cylindrical mirror, a curved cylindrical mirror, a prism, a micro-lens, a fresnel lens, a CD pattern, a small stub, a wire-drawing pattern, and a moth-eye structure, which are arranged in a convex and/or concave manner.

Preferably, the second texture structure comprises at least one of a linear cylindrical mirror, a curved cylindrical mirror, a prism, a micro-lens, a fresnel lens, a CD pattern, a small stub, a wire-drawing pattern, and a moth-eye structure, which are arranged in a convex and/or concave manner.

Preferably, the body is at least one of a glass layer, a PET layer, a PMMA layer, a PC layer, a thermosetting or photo-curing polymer layer, a sapphire glass layer.

An electronic device shell comprises a base layer and an optical film arranged on the base layer, wherein the optical film is the optical film.

Preferably, the optical film further comprises a reflective layer disposed on the first texture structure and the second texture structure, a colored layer disposed on the reflective layer, and an adhesive layer disposed on the second surface of the body;

the second surface is opposite to the first surface, and the optical film is bonded on the base layer through the adhesive layer.

Has the advantages that:

the first texture structure and the second texture structure in the optical film are arranged in an occlusion mode to form a third texture, so that not only can a light and shadow effect be seen, but also the third texture can be seen when the optical film is viewed; meanwhile, only the first texture structure and the second texture structure are arranged on the first surface of the body, and compared with the case that the first texture structure and the second texture structure are respectively arranged on the upper surface and the lower surface of the body, the technical scheme provided by the invention simplifies the manufacturing process difficulty and reduces the thickness of the body, thereby reducing the production cost and ensuring that the optical film is easier to cut off during hot stamping.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

FIG. 1 is a top view of an optical film according to one embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of an optical film according to an embodiment of the present disclosure;

FIG. 3 is a top view of an optical film according to a second embodiment of the present disclosure;

FIG. 4 is a schematic cross-sectional view of an optical film according to a second embodiment of the present disclosure;

FIG. 5 is a schematic cross-sectional view of another optical film provided in accordance with a second embodiment of the present invention;

FIG. 6 is a top view of an optical film according to a third embodiment of the present disclosure;

FIG. 7 is a schematic cross-sectional view of an optical film according to a third embodiment of the present disclosure;

FIG. 8 is a schematic cross-sectional view of another optical film provided in accordance with a third embodiment of the present invention;

fig. 9 is a schematic cross-sectional view of an electronic device housing according to the present invention.

Reference numerals:

10-a body;

21-a first micro-nano structure;

22-a second micro-nano structure;

23-raised structures;

30-a tie layer;

40-a base layer;

50-a reflective layer;

60-coloring layer.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, unless explicitly stated or limited otherwise, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it should be understood that the terms "upper" and "lower" as used in the description of the embodiments of the present invention are used in the angle shown in the drawings, and should not be construed as limiting the embodiments of the present invention. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

As shown in fig. 1 to fig. 8, which are schematic structural diagrams (including a top view and a cross-sectional diagram) of the optical film provided by the present invention, respectively.

The optical film comprises a body 10, wherein a first texture structure and a second texture structure are arranged on a first surface of the body 10; the first texture feature and the second texture feature are configured to engage to form a third texture feature. The third texture is not a true texture where there is a mechanical structure (e.g., by forming protrusions and/or depressions in a material), but is primarily an optical effect created by the interference of the first texture with the second texture by the snap-fit arrangement, and is therefore said to be an optical effect texture. The first texture structure and the second texture structure in the optical film provided by the invention are arranged in an occlusion manner to form a third texture, so that not only can a light and shadow effect be seen, but also the third texture can be seen when the optical film is viewed.

Specifically, the hardness of the first texture structure or the second texture structure is not less than 2H, and since the surface on which the first texture structure and the second texture structure are located needs to be used as a user surface, it is ensured that the hardness of the material forming the first texture structure or the second texture structure is not less than 2H. The laminated structure of the body 10 is made of a material having a certain hardness toward the user surface, so as to ensure that the user surface is not damaged due to the hardness problem.

It can be understood that the first surface of the body 10 refers to a surface on the same side of the body 10, and thus, only one of the surfaces of the body 10 is provided with the first texture structure and the second texture structure, compared with the case that the upper surface and the lower surface of the body 10 are respectively provided with the first texture structure and the second texture structure, the technical scheme provided by the invention simplifies the manufacturing process difficulty and reduces the thickness of the body 10, thereby reducing the production cost and ensuring that the optical film is easier to cut off during hot stamping.

Further, the first texture structure comprises a first protruding and/or recessed micro-nano structure 21 (the first recessed micro-nano structure 21 is not shown in the figure), the second texture structure comprises a second protruding and/or recessed micro-nano structure 22 (the second recessed micro-nano structure 22 is not shown in the figure), and the first micro-nano structure 21 and the second micro-nano structure 22 are arranged in an occlusion manner. That is, the bite set is embodied as: all the first micro-nano structures 21 in the first texture structure and all the second micro-nano structures 22 in the second texture structure have an occlusion effect, and the occlusion effect is that the first micro-nano structures 21 and the second micro-nano structures 22 are occluded. That is to say, at least when the first micro-nano structure 21 and the second micro-nano structure 22 are engaged, the first texture structure and the second texture structure interfere to form a third texture with a light and shadow effect.

Further, in order to make the formed third texture more obvious, the first micro-nano structure 21 and the second micro-nano structure 22 need to be different. The above differences refer to: the first micro-nano structure 21 and the second micro-nano structure 22 have a difference in at least one of type, length, width, height, angle, density, radian, inclination, and period.

For example, the first micro-nano structure 21 and the second micro-nano structure 22 only have a difference in an angle formed therebetween, and the third texture may generate visual effects with different visual senses according to the magnitude of angular deflection, wherein the presence of at least one angle (e.g., 45 °) in the deflected angle enables the light and shadow effect of the third texture to be clearest.

The first texture structure and the second texture structure are respectively made of one or more polymers, and the polymers can be light-transmitting materials or light-proof materials, namely materials with light transmittance and materials without light transmittance. Meanwhile, the first micro-nano structure 21 and the second micro-nano structure 22 may be colored or colorless, that is, whether the material forming the first micro-nano structure 21 and the second micro-nano structure 22 is colorless or colored is mainly used, and both the first micro-nano structure 21 and the second micro-nano structure 22 can form a third texture with a light and shadow effect.

The polymer can be a single polymer or a mixed polymer formed by mixing a plurality of non-reactive single polymers. The polymer may have a light transmission of greater than 70%, or the polymer is a transparent color or visually appears transparent. The polymer may be a resin material such as PET (polyethylene terephthalate), PVC (polyvinyl chloride), PC (Polycarbonate), or PMMA (polymethyl methacrylate), or a photo-curable adhesive or a thermosetting adhesive such as uv (ultravioletrays), oca (optically curable clear adhesive).

The first texture structure comprises at least one of a line cylindrical mirror, a curved cylindrical mirror, a prism, a micro lens, a Fresnel lens, a CD (compact disc) pattern, a small short line, a wire drawing pattern and a moth eye structure which are arranged in a protruding and/or recessed mode; similarly, the second texture structure also includes at least one of a linear cylindrical mirror, a curved cylindrical mirror, a prism, a micro-lens, a fresnel lens, a CD pattern, a small stub, a wire-drawing pattern, and a moth-eye structure, which are arranged in a convex and/or concave manner. That is, the first micro-nano structure 21 and the second micro-nano structure 22 may be at least one of a linear cylindrical mirror, a curved cylindrical mirror, a micro lens, a fresnel lens, a CD pattern, a small stub, a moth-eye structure, and a wire drawing pattern, respectively.

Further, the body 10 is one or a combination of two or more of a glass layer, a PET layer, a PMMA layer, a PC layer, a thermosetting or photo-curing polymer layer, and a sapphire glass layer, and the body 10 herein does not have to be a single layer structure, and may be a stack of multiple layers. In particular implementations, the body 10 may be a material structure, such as a glass layer; it may be a laminated structure of a plurality of materials, for example, a glass layer + an adhesive material layer + a PET layer + a photo-curing or thermosetting polymer layer, or an organic glass layer + an adhesive layer + a PET layer + a photo-curing or thermosetting polymer layer, or a glass layer + a photo-curing or thermosetting polymer layer, or the like.

The first texture and the second texture may be directly formed on the upper surface of the body 10 or constitute a unitary structure with the body 10. In the manufacturing process, after the body 10 is manufactured, the first texture and the second texture are simultaneously manufactured on the upper surface of the body 10. It is noted that when the polymer constituting the first texture and the second texture is different from the polymer constituting the body 10, there is an interface (not shown) between the first texture and the second texture and the body 10, respectively.

Referring to fig. 1 and 2, in a first embodiment, the first texture structure and the second texture structure are arranged in an engaged manner (i.e., the first micro-nano structure 21 and the second micro-nano structure 22 are arranged in an engaged manner), and the two structures are arranged in an engaged manner to form a structure with an overall arc-shaped cross section.

Referring to fig. 3 to 5, in the second embodiment, the first texture structure and the second texture structure are engaged with each other and form a structure having two arch-shaped sections. At this time, the engaging portions of the first texture and the second texture are spaced apart (see fig. 5) or continuous (see fig. 4).

Referring to fig. 6 to 8, in a third embodiment, the engaging portion of the first texture structure and the second texture structure has a protruding structure 23, the first texture structure and the second texture structure form a structure with three arc-shaped cross sections after engaging, and the protruding structure 23 and the first micro-nano structure 21 and the protruding structure 23 and the second micro-nano structure 22 are arranged at intervals (see fig. 8) or continuously (see fig. 7).

Specifically, the cross-sectional shapes of the first texture features and the second texture features include one or more of a triangle, a rectangle, an inverted trapezoid, and an irregular polygon in addition to the arch.

Referring to fig. 9, the present invention further provides an electronic device housing, which includes a base layer 40 and an optical film bonded to the base layer 40, where the optical film is the above-mentioned optical film.

The electronic equipment comprises a 3C product and can also be a white appliance. For example, the electronic device is a mobile phone, an ipad, a notebook, a smart watch, an ipod, a camera, a video camera, or a smart bracelet, and the electronic device cover plate is a front cover and/or a rear cover of the mobile phone, or a front cover and/or a rear cover of a tablet computer. The electronic equipment has very good gradually-changed decorative three-dimensional effect, stable pictures and texts and lower cost.

The optical film provided by the invention can also be used in industries such as anti-counterfeiting and packaging, and when the optical film is used in industries such as anti-counterfeiting and packaging, the optical film can be in a transmission type or a reflection type, and the reflection type effect film can be provided with a reflection layer 50 on one side of a first surface (namely a first texture structure and a second texture structure), so that an observation surface can be arranged on one side of a second surface, and a blank in the optical film can be provided with marks such as holographic patterns, pictures and texts, and the like, so as to enhance the diversification of the optical film.

Preferably, when the optical film is a reflective optical film, the optical film further includes a reflective layer 50 disposed on the first and second textures, a colored layer 60 disposed on the reflective layer 50, and an adhesive layer 30 disposed on the second surface of the body, and the optical film is bonded to the base layer 40 by the adhesive layer 30. Wherein, the base layer 40 can be a glass sheet, a plastic sheet or a metal sheet; the colored layer 30 may be a primer layer formed of ink; the adhesive layer 30 may be formed of OCA or other transparent jelly-like substance.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. An optical film is characterized by comprising a body, wherein a first texture structure and a second texture structure are arranged on a first surface of the body;

the first texture feature and the second texture feature are configured to engage to form a third texture.

2. An optical film as recited in claim 1, wherein the first texture feature and the second texture feature differ in at least one of type, length, width, height, angle, density, curvature, slope, and period.

3. An optical film as recited in claim 1, wherein the engaging portions of the first and second texturing are spaced apart or continuous.

4. An optical film as recited in claim 1, wherein the engaging portions of the first and second texturing have raised structures.

5. An optical film as recited in claim 4, wherein the raised structures are spaced apart or continuous with the first texture and the raised structures are spaced apart or continuous with the second texture.

6. An optical film as recited in claim 1, wherein the cross-sectional shapes of the first and second textures comprise one or more of a triangle, an arch, a rectangle, an inverted trapezoid, and an irregular polygon.

7. An optical film as recited in claim 1, wherein the first texture features include at least one of raised and/or recessed line-and-cylinder mirrors, curved-and-cylinder mirrors, prisms, microlenses, fresnel lenses, CD features, small stubs, filamentation, and moth-eye features.

8. An optical film as recited in claim 1, wherein the second texture features include at least one of raised and/or recessed linear lenticular, curved lenticular, prism, microlens, fresnel lens, CD pattern, small stub, wire-drawing, and moth-eye features.

9. An optical film as recited in any one of claims 1-8, wherein the body is at least one of a glass layer, a PET layer, a PMMA layer, a PC layer, a thermally or photo cured polymer layer, and a sapphire glass layer.

10. An electronic device housing comprising a base layer and an optical film disposed on the base layer, wherein the optical film is the optical film according to any one of claims 1 to 9.

11. The electronic device case of claim 10, wherein the optical film further comprises a reflective layer disposed on the first and second textures, a colored layer disposed on the reflective layer, and an adhesive layer disposed on the second surface of the body;

the second surface is opposite to the first surface, and the optical film is bonded on the base layer through the adhesive layer.

Images