CN216960537U

CN216960537U - Electronic equipment cover plate with multilayer textures

Info

Publication number: CN216960537U
Application number: CN202123125180.0U
Authority: CN
Inventors: 洪莘; 高育龙; 游伟
Original assignee: Shine Optoelectronics Kunshan Co Ltd
Current assignee: Shine Optoelectronics Kunshan Co Ltd
Priority date: 2021-11-25
Filing date: 2021-12-14
Publication date: 2022-07-12
Anticipated expiration: 2031-12-14
Also published as: CN217455194U; CN114311885A; CN216960413U; CN216960428U; CN216960538U

Abstract

The utility model discloses an electronic equipment cover plate with multilayer textures, which comprises: the glass fiber layer, the first substrate, the first optical structure layer, the second substrate, the second optical structure layer and the protective layer; the glass fiber layer comprises a first surface and a second surface which is arranged oppositely; the protective layer is arranged on one side, away from the glass fiber layer, of the second base material, the hardness of one side, away from the second base material, of the protective layer is not less than 2H, a micro-nano structure is arranged on one side, away from the second base material, of the protective layer, and at least two optical structure layers are arranged between the glass fiber layer and the protective layer; the glass fiber is used as a carrier, traditional glass or composite boards are replaced, the first optical structure layer, the second optical structure layer and the multi-layer textures of the micro-nano structure are arranged on the surface of the glass fiber layer, the hardness of the protection layer of the user surface is not less than 2H, and on the premise that the original aesthetic feeling of the electronic equipment cover plate is guaranteed, the cost of the electronic equipment cover plate is greatly reduced.

Description

Electronic equipment cover plate with multilayer textures

Technical Field

The utility model relates to the technical field of electronic shells, in particular to an electronic equipment cover plate with multiple layers of textures.

Background

As the technology industry has been developed, electronic devices such as mobile phones or tablet computers have been increasingly used in daily life. The use of these products is becoming more common and is moving towards convenient, versatile and aesthetically pleasing designs. When consumers shop for these products, the aesthetic appearance of the design has become an important purchasing factor besides the functions of software and hardware.

However, as the material price of the cover plate of the conventional electronic device, such as a mobile phone, is increased and the quality of other hardware devices of the mobile phone is increased, a new structure of the cover plate of the electronic device is needed to be provided to solve the problems in the prior art in order to reduce the cost and weight of the cover plate of the electronic device and to meet the communication requirement of 5G signals.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide an electronic device cover with multi-layer textures to solve the above technical problems.

The utility model adopts a technical scheme that:

an electronic device cover plate having a multi-layer texture, comprising:

the glass fiber layer comprises a first surface and a second surface which is arranged oppositely;

the first base material is positioned on one side of the first surface of the glass fiber layer;

the first optical structure layer is arranged on one side, facing the glass fiber layer, of the first base material, and the first optical structure layer is arranged on one side, far away from the first base material, of the first optical structure layer; the first dielectric film is arranged on the surface of the first optical structure; the ink layer is arranged on the surface of the first dielectric film; the bonding layer is arranged on the first surface of the glass fiber layer, and the glass fiber layer is connected with the ink layer through the bonding layer;

the second base material is positioned on one side of the first base material, which is far away from the glass fiber layer;

the second optical structure layer is arranged on one side, facing the first substrate, of the second substrate, and a second optical structure is arranged on one side, far away from the second substrate, of the second optical structure layer; the second dielectric film is arranged on the surface of the second optical structure;

the protective layer is arranged on one side, away from the glass fiber layer, of the second base material, the hardness of one side, away from the second base material, of the protective layer is not less than 2H, and a micro-nano structure is arranged on one side, away from the second base material, of the protective layer.

In one embodiment, the wear resistance times of the steel wool on the surface of the protective layer under the action of 1KG external force is not less than 520 times.

In one embodiment, the second dielectric film is light-transmitting and can transmit a part of light through the second dielectric film.

In one embodiment, the height difference of at least two micro-nano structures in the vertical direction of the electronic equipment cover plate is not more than 2 μm.

In one embodiment, the first dielectric film and/or the second dielectric film has a color, or has a reflective property, or both a color and a reflective property.

In one embodiment, the first optical structure and/or the second optical structure is one or a combination of micro-lenses, small short lines, cylindrical lenses, triangular pyramids, rectangular pyramids, fresnel lenses, continuous relief structures, CD patterns and wire drawing patterns.

In one embodiment, the second dielectric film is connected to the first substrate through an adhesive layer.

In one embodiment, the first substrate and/or the second substrate is one or a combination of PET, PC, PMMA and PE.

In one embodiment, the second dielectric film has a thickness of no greater than 30 microns.

In one embodiment, the electronic device cover plate visually has a color gradient; alternatively, the electronic device cover plate visually has a dynamic light pillar.

The utility model has the beneficial effects that: according to the electronic equipment cover plate with the multilayer textures, glass fibers are used as a carrier, the traditional glass or composite board is replaced, the first optical structure layer and the second optical structure layer which are aesthetic and the multilayer textures of the micro-nano structure are arranged on the surface of the glass fiber layer, the hardness of a protection layer of a user surface is not less than 2H, and the cost of the electronic equipment cover plate is greatly reduced on the premise that the aesthetic feeling of the original electronic equipment cover plate is guaranteed.

Drawings

FIG. 1 is a schematic plan view of a cover plate of an electronic device according to the present invention;

FIG. 2 is a schematic cross-sectional view of a cover plate of an electronic device according to the present invention;

FIG. 3 is a schematic cross-sectional view of a cover plate of an electronic device according to the present invention;

FIG. 4 is a schematic cross-sectional view of a cover plate of an electronic device according to the present invention;

FIG. 5 is a schematic cross-sectional view of a cover plate of an electronic device according to another embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of an electronic device cover plate with multi-layered textures according to the present invention;

FIG. 7 is a schematic cross-sectional view of an electronic device cover plate with multi-layered textures according to the present invention;

FIG. 8 is a schematic cross-sectional view of an electronic device cover plate with multi-layered textures according to the present invention;

FIG. 9 is a schematic cross-sectional view of an electronic device cover plate with multi-layered textures according to the present invention;

FIG. 10 is a schematic cross-sectional view of an electronic device cover plate with multi-layered textures according to the present invention;

FIG. 11 is a schematic cross-sectional view of an electronic device cover plate with multi-layered textures according to the present invention;

FIG. 12 is a schematic cross-sectional view of an electronic device cover plate with multi-layer textures of the present invention;

FIG. 13 is a schematic cross-sectional view of an electronic device cover plate with multi-layered textures according to the present invention;

FIG. 14 is a schematic cross-sectional view of an electronic device cover plate with multi-layer textures of the present invention;

fig. 15 is another cross-sectional view of an electronic device cover plate with multi-layered textures according to the present invention.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described below. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

An electronic device cover, comprising:

the glass fiber layer comprises a first surface and a second surface which is arranged oppositely; the glass fiber layer is used as a supporting structure of the electronic equipment cover plate, so that the electronic equipment cover plate is light in weight, low in cost and good in mechanical property; the glass fiber layer can be of a transparent structure or a non-transparent structure, or the glass fiber layer also has a certain color.

The optical spacing layer is positioned on the first surface of the glass fiber layer, and at least visually presents one color; or the optical spacing layer has a reflection function on light rays, and the reflectivity is not less than 30%; the optical spacing layer is connected with the glass fiber layer through a bonding layer and is positioned on one surface, facing a user, of the glass fiber layer, and the bonding layer can be formed by a thermosetting bonding material or a photo-curing material, such as a UV (ultraviolet) adhesive and other materials; the optical spacing layer may be a single-layer structure or a composite-layer structure, and the optical spacing layer visually presents a color, that is, the visual sensation of a person is colored, or the optical spacing layer has the performance of reflecting light, and may be that the optical spacing layer has a reflection function, or one layer of the optical spacing layer has a reflection function.

The protective layer is arranged on one side, away from the glass fiber layer, of the optical spacing layer, and the hardness of one side, away from the optical spacing layer, of the protective layer is not less than 2H; the outermost layer of the electronic equipment cover plate is provided with the protective layer, namely the user surface, so that the protective layer has a protective effect on the optical spacing layer, and the protective layer is required to have certain hardness requirement, so that a user can experience comfortablely when using the electronic equipment cover plate. In one embodiment, a micro-nano structure is arranged on one side, away from the optical spacing layer, of the protection layer, the height difference of the micro-nano structure in the direction perpendicular to the plane of the protection layer is not larger than 2 micrometers, namely the micro-nano structure is arranged on the surface facing the user surface, the micro-nano structure with fluctuant height is formed on the surface of the protection layer, the micro-nano structure can be formed on the surface of the protection layer in a stamping mode, the wear-resisting times of steel wool acting on 1 kilogram of external force of the protection layer are not less than 520 times, namely the protection layer is not scratched.

In one embodiment, the optical spacer layer comprises at least two layers; the optical structure can form different visual effects by designing and arranging the optical structure, and the optical structure can be a micro lens, a small short line, a cylindrical mirror, a triangular pyramid, a rectangular pyramid, a Fresnel lens, a continuous relief structure, a CD (compact disc) pattern, a wire drawing pattern and other structures; the optical structures may be spaced apart from each other, or the optical structures may be connected to each other, that is, closely arranged, and whether or not there is a space between the optical structures may be determined by the visual optics to be designed.

In one embodiment, in the above embodiment, a structural surface of the optical structure faces the glass fiber layer, a dielectric film is disposed on a surface of the optical structure, and a shielding layer is disposed on a side of the dielectric film away from the optical structure; the dielectric film can have a color, can have a reflection performance, or has both a color and a reflection function, the dielectric film can be formed on the surface of the optical structure in a film coating mode, the dielectric film structure can be dozens of nanometers to hundreds of nanometers thick, the dielectric film can be formed in coating, ink-jet printing, screen printing and other modes, the shielding layer can be ink or other color materials, the shielding layer is mainly used for shielding outside light, the dielectric film has a certain transmittance when the dielectric film is thinner, so that the shielding layer mainly shields the structure of the glass fiber layer or shields the structure of the glass fiber layer and the internal structure of electronic equipment, and the shielding layer can be formed in coating, screen printing, spraying, ink-jet printing and other modes.

In one embodiment, the optical spacer layer comprises at least two optical structure layers, wherein one optical structure layer is provided with a first optical structure, and the other optical structure layer is provided with a second optical structure; the optical spacing layer is provided with two optical structure layers, the first optical structure and the second optical structure can be the same structure or different structures, and the two optical structure layers visually display the optical effects of the two optical structure layers respectively, or the two optical structure layers visually display the combined optical effect formed by the two optical structure layers through optical action; the polymer layer is provided with a first optical structure on one surface to form an optical structure layer; another polymer layer, which is provided with a second optical structure on one surface to form another optical structure layer, wherein the first optical structure and the second optical structure are formed on different polymers; in another structure, a polymer layer is provided with a first optical structure on one surface and a second optical structure on the other surface, and the two optical structure layers are integrated, share the same polymer layer, are formed on two different surfaces of the polymer layer and are arranged on two opposite surfaces.

In one embodiment, the first optical structure is close to the glass fiber layer, the structure surface of the first optical structure faces the glass fiber layer, a first dielectric film is arranged on the surface of the first optical structure, and a shielding layer is arranged on the surface of the first dielectric film; that is to say, in the first optical structure and the second optical structure, the first optical structure is closest to the glass fiber layer and is close to the glass fiber layer, the structural surface faces the glass fiber layer, a first dielectric film is arranged on the structural surface (surface) of the first optical structure, and a shielding layer is arranged on the dielectric film.

In one embodiment, the structure of the second optical structure faces the first optical structure, and the absolute value of the difference between the refractive index of the material forming the first optical structure and the refractive index of the material forming the second optical structure is not less than 0.2, where the structure is a polymer, the second optical structure is disposed on one surface of the structure, another polymer is disposed on the surface of the structure, and the first optical structure is disposed on the surface of the another polymer away from the second optical structure, where the polymer forming the second optical structure and the polymer forming the first optical structure have a refractive index difference, and the absolute value of the refractive index difference is not less than 0.2, which is equivalent to two optical structure layers being stacked.

In one embodiment, a structural surface of the second optical structure faces the first optical structure, and a second dielectric film is disposed on a surface of the second optical structure, where the second dielectric film has a certain transmittance, and has a certain color or color, or has a certain reflection function, and can reflect a part of light or transmit a part of light through the second dielectric film, and the second dielectric film may be formed by a process such as plating, or a process such as screen printing or spraying; wherein the structure of the second optical structure faces the first optical structure, and other material layers, such as PET, PMMA, PE, adhesive layers, etc., may be disposed between the two optical structure layers.

In one embodiment, the structure surface of the second optical structure is disposed opposite to the structure surface of the first optical structure, and the second optical structure surface is provided with a second dielectric film, which corresponds to that the optical spacer layer includes a substrate, the substrate includes a first surface and an oppositely disposed second surface, the first surface is provided with a polymer, the polymer surface of the first surface forms the first optical structure, the second surface of the substrate is provided with another polymer (which may be the same as the polymer of the first surface), and the other polymer surface forms the second optical structure, and in this case, it can be understood that the structure surface of the second optical structure is disposed opposite to the structure surface of the first optical structure; or, the structure surface of the second optical structure and the structure surface of the first optical structure are arranged in opposite directions, the second optical structure surface is provided with a second dielectric film, and certainly, the surface of the second optical structure may not be provided with a dielectric film, so that a refractive index difference is required to be provided between materials in contact with the second optical structure, and thus the second optical structure can be ensured to display an optical effect, and the absolute value of the refractive index difference is not less than 0.2.

In one embodiment, the optical spacing layer has color gradual change or color change visually, the optical spacing layer has the effect of color gradual change or color change, and the protective layer has transmittance, so that the electronic device cover plate has the effect of color gradual change or color change, and an aesthetic visual experience is brought to people; or the optical spacing layer has a dynamic light column visually, and the visual effect can also bring about that the electronic equipment cover plate has a dynamic light column visually, and the light column is formed mainly because the optical structure changes the transmission path of light and arranges the optical structure according to a certain direction, so that the light column which is desired to be realized is formed; of course, the optical spacing layer or the electronic device cover plate may have color gradient or color change and the visual effect of the light pillar at the same time, that is, a mixed situation of various optical effects or visual effects occurs, so that the electronic device cover plate is more colorful.

Referring to fig. 1 and fig. 2, an electronic device cover plate 100 is disclosed, where the electronic device cover plate 100 may be a back cover of a mobile phone, a back cover of an IPAD, an electronic device such as a notebook, or a back cover of a 3C product, and the electronic device cover plate is further provided with a LOGO, such as an SOE; an electronic device cover plate 100 comprises a glass fiber layer 10, a protective layer 20, a bonding layer 30, a shielding layer 40 and a dielectric film 50, wherein the shielding layer 40 and the dielectric film 50 form an optical spacing layer; the glass fiber layer 10 comprises a first surface and a second surface which is arranged oppositely, a shielding layer 40 is arranged on one side of the first surface of the glass fiber layer 10, the shielding layer 40 is connected with the first surface of the glass fiber layer 10 through a bonding layer 30, the shielding layer 40 can be an ink layer or other materials with colors, the bonding layer 30 can be a thermosetting or photocuring material, and the photocuring material is UV (ultraviolet) glue for example; a dielectric film 50 is arranged on one side of the shielding layer 40 away from the glass fiber layer 10, the dielectric film 50 can be a plurality of film systems formed by coating, or film systems formed by ink-jet printing, screen printing and other manners, and the dielectric film 50 can be a metal layer, or a compound or a mixture; a protective layer 20 is arranged on one side of the dielectric film 50 away from the shielding layer 40, the hardness of the surface of the protective layer 20 facing a user is not less than 2H, the surface of the protective layer 20 has a certain hardness to ensure that the user surface has a certain scratch resistance, and the protective layer 20 can be made of a photo-curing or thermosetting material, such as UV glue; the thickness of the glass fiber 10 is 220-550 micrometers, preferably 280-480 micrometers, and can be 300 micrometers; the thickness of the bonding layer 30 is 5-20 micrometers, and 10 micrometers can be selected; the thickness of the shielding layer 40 is 30-60 micrometers, and 40 micrometers can be selected; the thickness of the dielectric film 50 is 0.2-20 micrometers, and the thickness of the protective layer 20 is not more than 20 micrometers.

Referring to fig. 3, in the electronic device cover plate, on the basis of the structure of fig. 2, the protective layer 20 has a structural protective layer 21 on a variation layer, and the thickness of the protective layer 21 is not greater than 20 μm; a micro-nano structure is arranged on one side, far away from the dielectric film 50, of the protective layer 21 to form the protective layer 21, the micro-nano structure is in an aperiodic continuous fluctuation shape, the height difference of at least two micro-nano structures in the vertical direction of the electronic equipment cover plate is not more than 2 micrometers, and the height of the micro-nano structures in the vertical direction of the electronic equipment cover plate can be 50 micrometers; the protective layer 21 may be a UV glue, or a PU material or a TPU material.

Referring to fig. 4 and 5, an electronic device cover plate, as shown in fig. 4, includes a glass fiber layer 10, a bonding layer 30, a protective layer 21, and an optical spacer layer, where the optical spacer layer is connected to a first surface of the glass fiber layer 10 through the bonding layer, the optical spacer layer includes a substrate 60, a dielectric film 50, and a shielding layer 40, the substrate 60 includes a first surface and a second surface, the dielectric film 50 is disposed on the second surface of the substrate 60, the shielding layer 40 is disposed on a side of the dielectric film 50 away from the substrate 60, the dielectric film 50 and the shielding layer 40 are disposed between the glass fiber layer 10 and the substrate 60, and a thickness of the substrate 60 is not greater than 108 μm; the protective layer 21 is disposed on the first surface of the substrate 60. As shown in fig. 5, the structure of the electronic device cover plate is different from that of fig. 4 in that a shielding layer 40 is disposed on a second surface of a substrate 60, a dielectric film 50 is disposed on a first surface of the substrate 60, a protective layer 21 is disposed on a side of the dielectric film 50 away from the substrate 60, the shielding layer 40 of the electronic device cover plate is located between the substrate 60 and the glass fiber layer 10, the substrate 60 may be made of PET, PE, PMMA, PC, or the like, and equivalently, the shielding layer and the dielectric film are disposed on one surface of the substrate 60 or the dielectric films are disposed on both surfaces of the substrate 60, and the shielding layer is disposed on the other surface of the substrate.

Referring to fig. 6, an electronic device cover plate includes a glass fiber layer 10, an adhesive layer 30, a protective layer 21, and an optical spacer layer; the optical spacing layer is connected with the glass fiber layer 10 through the bonding layer, the optical spacing layer comprises a base material 60, an optical structure layer 70, a dielectric film 51 and a shielding layer 40, a polymer is arranged on one side, facing the glass fiber layer 10, of the base material 60, an optical structure is arranged on one side, away from the base material 60, of the polymer to form the optical structure layer 70, the thickness of the optical structure layer 70 is not larger than 20 micrometers, the dielectric film 51 is arranged on the surface of the optical structure layer 70, the thickness of the dielectric film 51 is 0.2-20 micrometers, the shielding layer 40 is arranged on the surface of the dielectric film 51, and the bonding layer 30 is located between the glass fiber layer 10 and the shielding layer 40 to bond the two layers; a protective layer 21 is arranged on the other surface of the base material 60, and an undulating micro-nano structure is arranged on the protective layer 21 facing to the user surface; wherein, the base material 60 can be one or a combination of more of PET, PC, PMMA, PE, and the like; the polymer can be light-cured or heat-cured glue such as UV glue, stamping glue and the like; the dielectric film 51 can be formed by a coating process, and can be formed by vacuum plating, evaporation plating, magnetron sputtering and the like; or can be formed by spraying, printing or printing; the shielding layer 40 may be ink, varnish, or colored film.

Referring to fig. 7, an electronic device cover plate includes a glass fiber layer 10, an adhesive layer 30, a protective layer 22, and an optical spacer layer; the optical spacing layer is connected with the glass fiber layer 10 through the bonding layer, the optical spacing layer comprises a dielectric film 51 and a shielding layer 40, a fluctuant micro-nano structure is arranged on the protection layer 22 facing the user surface, an optical structure is arranged on one side of the protection layer 22 facing the glass fiber layer 10, the optical structure is arranged on the protection layer 22 and is an integral structure, and the thickness of the protection layer 22 is not more than 20 micrometers; the whole thickness of the electronic equipment cover plate is greatly reduced; the dielectric film 51 is arranged on the surface of the optical structure, and the shielding layer 40 is arranged on the surface of the dielectric film 51.

Referring to fig. 8, an electronic device cover plate includes a glass fiber layer 10, an adhesive layer 30, a protective layer 21, and an optical spacer layer; the optical spacing layer is connected with the glass fiber layer 10 through the bonding layer, the optical spacing layer comprises a dielectric film 51 and a shielding layer 40, a fluctuating micro-nano structure is arranged on the protection layer 21 facing the user surface, a polymer is arranged on the other side of the protection layer 21, and an optical structure is arranged on one side of the polymer facing the glass fiber layer 10 to form an optical structure layer 70; at this time, there is no substrate between the optical structure layer 70 and the protective layer 21; the whole thickness of the electronic equipment cover plate is reduced; the dielectric film 51 is arranged on the surface of the optical structure, and the shielding layer 40 is arranged on the surface of the dielectric film 51.

Referring to fig. 9, an electronic device cover plate includes a glass fiber layer 10, an adhesive layer 30, a protective layer 21, and an optical spacer layer; the optical spacing layer is connected with the glass fiber layer 10 through the bonding layer, the surface, facing the user, of the protection layer 21 is provided with a fluctuating micro-nano structure, and the surface, facing the user, of the protection layer is arranged on the surface, facing the optical spacing layer, of the protection layer; the optical spacing layer comprises a composite layer 80, an optical structure layer 70, a dielectric film 51 and a shielding layer 40, the composite layer 80 comprises a gloss oil layer and an offset printing layer, the gloss oil layer is mainly made of polyester materials, gloss oil used in a screen printing process belongs to the UV type resin of the offset printing layer, the thickness of the composite layer 80 is not more than 40 micrometers, the offset printing layer is close to the glass fiber layer 10, one side, facing the glass fiber layer 10, of the offset printing layer is provided with a polymer, the surface of the polymer is provided with an optical structure to form the optical structure layer 70, and the dielectric film 51 and the shielding layer 40 are sequentially arranged on the surface of the optical structure layer 70.

Referring to fig. 10, an electronic device cover plate includes a glass fiber layer 10, a bonding layer 30, a protection layer 21, and an optical spacer layer; the optical spacing layer is connected with the glass fiber layer 10 through the bonding layer, the surface, facing the user, of the protection layer 21 is provided with a fluctuating micro-nano structure, and the surface, facing the user, of the protection layer is arranged on the surface, facing the optical spacing layer, of the protection layer; the optical spacing layer comprises a first optical component, a second optical component and an adhesive layer 31, wherein the first optical component and the second optical component are connected through the adhesive layer 31; the first optical component comprises a first substrate 60, a first optical structure layer 70, a first dielectric film 51 and a shielding layer 40, wherein a first polymer is arranged on one side of the first substrate 60 facing the glass fiber layer, an optical structure is arranged on the surface of the first polymer to form the first optical structure layer 70, and the first dielectric film 51 and the shielding layer 40 are sequentially formed on the surface of the first optical structure layer 70; the second optical component comprises a second substrate 61, a second optical structure layer 70 and a second dielectric film 52, wherein a second polymer is arranged on one side, facing the glass fiber layer, of the second substrate 61, an optical structure is arranged on the surface of the second polymer to form a second optical structure layer 71, and the second dielectric film 52 is formed on the surface of the second optical structure layer 71; the bonding layer 31 connects the first substrate 60 and the second dielectric film 52. In another structure, the bonding layer 31 connects the first substrate 60 and the second substrate 61, which is equivalent to that the second optical structure layer 72 is disposed on a side away from the fiberglass layer and faces a user side, the thickness of the second substrate 61 is not greater than 108 micrometers, the thickness of the second optical structure 71 is not greater than 40 micrometers, the thickness of the second dielectric film 52 is not greater than 30 micrometers, and the thickness of the bonding layer 31 is not greater than 20 micrometers.

Referring to fig. 11, an optical spacer structure shown in fig. 11 includes a substrate 60, a first optical structure layer 70, a second optical structure layer 71, a first dielectric film 51, a second dielectric film 52, and a shielding layer 40, wherein a first polymer is disposed on one side of the substrate 60 facing a glass fiber layer, an optical structure is disposed on a surface of the first polymer to form the first optical structure layer 70, a second polymer is disposed on the other side of the substrate 60, and an optical structure is disposed on a surface of the second polymer to form the second optical structure layer 71; the first dielectric film 51 and the shielding layer 40 are sequentially formed on the surface of the first optical structure layer 70, and the second dielectric film 52 is formed on the surface of the second optical structure layer 71.

Referring to fig. 12, fig. 14 and fig. 15, in the optical distance layer structure shown in fig. 12, the optical distance layer includes a substrate 60, a first optical structure layer 70, a second optical structure layer 72, a dielectric film 51 and a shielding layer 40, a second polymer is disposed on a side of the substrate 60 facing a glass fiber layer, the second polymer forms an optical structure to form the second optical structure layer 72, the second optical structure layer 72 is a graph-text structure, a height of the graph-text structure in the second optical structure layer 72 is not greater than 10 μm, or referring to fig. 14, the second optical structure layer 72 may also be the second optical structure layer 71, the second optical structure layer 71 is an optical structure such as a cylindrical mirror and a micro lens; arranging a second polymer on the surface of the second optical structure layer 71 or the second optical structure layer 72, wherein a refractive index difference exists between the second polymer and the first polymer, and an optical structure is arranged on the side, away from the substrate 60, of the second polymer to form a first optical structure layer 70; the first dielectric film 51 and the shielding layer 40 are sequentially formed on the surface of the first optical structure layer 70; in fig. 15, the second optical structure layer 72 is disposed on the user surface side of the substrate 60, and the second polymer and the protective layer have a refractive index difference.

Referring to fig. 13, based on fig. 14, a second dielectric film 52 is disposed on a surface of the second optical structure layer 71, and at this time, the second dielectric film 52 is located between the first optical structure layer 70 and the second optical structure layer 71, and the second dielectric film 52 has a certain transmittance.

The laminated structures can be replaced with new laminated structures without violating the principle, so as to realize new optical effects and different visual effects, and the visual effects formed by the optical structures can be color change effects, can also have light and shadow effects, or can be a combination of multiple optical effects, such as a combination of light and shadow and gradual change.

For the sake of better description, the first and second optical structure layers (e.g. the first optical structure layer and the second optical structure layer, the first dielectric film layer and the second dielectric layer, etc.) are defined, and the parameters or structures of the first and second optical structure layers and the first dielectric film layer may be referred to or referred to each other.

According to the electronic equipment cover plate with the multilayer textures, the glass fiber is used as a carrier, the traditional glass or composite board is replaced, the aesthetic optical layer is arranged on the surface of the glass fiber layer, the hardness of the protective layer of the user surface is not less than 2H, the optical layer is protected, and the cost of the electronic equipment cover plate is greatly reduced on the premise that the aesthetic feeling of the original electronic equipment cover plate is guaranteed.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail. In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Moreover, the technical features of the embodiments described above may be arbitrarily combined, and for the sake of simplicity of description, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An electronic device cover having a multi-layer texture, comprising:

2. The electronic device cover plate with multilayer textures of claim 1, wherein the steel wool on the surface of the protective layer has a wear resistance number of not less than 520 under the action of an external force of 1 KG.

3. The cover plate with multilayer texture as claimed in claim 1, wherein the second dielectric film has optical transparency to allow a part of light to transmit through the second dielectric film.

4. The electronic device cover plate with multilayer textures of claim 1, wherein a height difference of at least two micro-nano structures in a vertical direction of the electronic device cover plate is not greater than 2 μm.

5. The cover sheet for electronic devices with multilayer textures of claim 1, wherein the first dielectric film and/or the second dielectric film is colored or has reflective properties or both colored and reflective properties.

6. The electronic device cover plate with multilayer textures of any one of claims 1 to 5, wherein the first optical structures and/or the second optical structures are one or more of micro-lenses, small short lines, cylindrical mirrors, triangular pyramids, rectangular pyramids, Fresnel lenses, continuous relief structures, CD patterns and wire drawing patterns.

7. The cover plate with multilayer texture as claimed in claim 6, wherein the second dielectric film is connected to the first substrate through an adhesive layer.

8. The electronic device cover plate with multilayer textures of claim 1, wherein the first substrate and/or the second substrate is one or a combination of PET, PC, PMMA and PE.

9. The cover sheet for electronic devices having multilayer textures of claim 6, wherein the second dielectric film has a thickness of not more than 30 μm.

10. The cover sheet for electronic devices with multilayer textures of claim 1, wherein the cover sheet for electronic devices visually has a color gradient; alternatively, the electronic device cover plate visually has a dynamic light pillar.