CN216871602U

CN216871602U - Metal grid sheet, functional module and electronic equipment

Info

Publication number: CN216871602U
Application number: CN202122434638.4U
Authority: CN
Inventors: 李培良; 朴成珉; 陈庆中
Original assignee: Anhui Jingzhuo Optical Display Technology Co Ltd
Current assignee: Anhui Jingzhuo Optical Display Technology Co Ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-07-01
Anticipated expiration: 2031-10-09

Abstract

The utility model discloses a metal grid sheet, a functional module and electronic equipment, wherein the metal grid sheet comprises a base material, a first grid structure and a second grid structure, the base material comprises a first side surface and a second side surface which are opposite, the first grid structure comprises a first metal oxide layer, a first metal layer and a second metal oxide layer which are sequentially stacked, the first metal oxide layer is arranged on the first side surface, the second grid structure comprises a third metal oxide layer, a second metal layer and a fourth metal oxide layer which are sequentially stacked, and the third metal oxide layer is arranged on the second side surface. The metal mesh sheet has lower reflectivity, has a better visual display effect when in use, and can improve the use experience of a user.

Description

Metal grid sheet, functional module and electronic equipment

Technical Field

The utility model relates to the technical field of transparent electrodes, in particular to a metal grid sheet, a functional module and electronic equipment.

Background

In the fields of touch screens, antennas and the like, metal grids are often used for circuit connection, however, the conventional metal grid sheet is mainly conductive by arranging a metal layer on a base material, but because the reflectivity of the metal layer is high, light is reflected to eyes of a user, and the visual display effect in use is influenced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model discloses a metal grid sheet, a functional module and electronic equipment, which can reduce the reflectivity of the metal grid sheet.

In order to achieve the above object, in a first aspect, the present invention discloses a metal mesh sheet, including:

a substrate comprising opposing first and second sides;

the first grid structure comprises a first metal oxide layer, a first metal layer and a second metal oxide layer which are sequentially stacked, wherein the first metal oxide layer is arranged on the first side surface; and

and the second grid structure comprises a third metal oxide layer, a second metal layer and a fourth metal oxide layer which are sequentially stacked, and the second metal oxide layer is arranged on the second side surface.

Through the both sides at the substrate set up first metal level and the second metal level for electrically conductive, and at first metal level, set up first metal oxide layer between second metal level and the substrate respectively, third metal oxide layer, and at first metal level, the surface of second metal level is provided with second metal oxide layer respectively, fourth metal oxide layer, therefore, utilize first metal oxide layer, second metal oxide layer, third metal oxide layer, the setting on fourth oxide layer, can reduce the reflectivity of metal net piece, reduce the light that the reflection got into in the user's eye, and then promote the visual display effect of user when using this metal net piece.

As an optional implementation manner, in an embodiment of the present invention, the metal mesh sheet further includes a first protection layer and a second protection layer, the first protection layer is disposed on the first side surface, the first metal oxide layer is disposed on a side of the first protection layer facing away from the first side surface, the second protection layer is disposed on the second side surface, and the third metal oxide layer is disposed on a side of the second protection layer facing away from the second side surface. Consider that the substrate adopts macromolecular material more, and receive the influence of substrate self material, make the substrate under the condition of high temperature, haze can increase, influence the visual effect of metal net piece in the use, the condition that influences the conductivity of metal net piece can appear even, consequently set up first protective layer, second protective layer between substrate and first grid structure, second grid structure, can prevent that the substrate from receiving high temperature environment's influence, improve the use experience of metal net piece and feel.

As an optional implementation manner, in an embodiment of the present invention, the first protection layer and the second protection layer are made of acrylic resin. The first protective layer and the second protective layer are made of acrylic resin, so that the hardness of the base material is enhanced, the structural reliability of the metal grid sheet is improved, and in addition, the first protective layer and the second protective layer are made of high polymer materials, so that the coating adhesive force of metal oxides can be enhanced, and the bonding strength is improved.

As an optional implementation manner, in an embodiment of the present invention, the first metal layer and the second metal layer are made of copper, and the first metal oxide layer, the second metal oxide layer, the third metal oxide layer, and the fourth metal oxide layer are made of copper oxide. The first metal oxide layer, the second metal oxide layer, the third metal oxide layer and the fourth metal oxide layer which are made of copper oxides (such as copper oxide or copper nickel oxide) are influenced by the self color and reflectivity characteristics, and compared with other materials, the reflectivity of the metal grid sheet is reduced.

As an alternative implementation manner, in the embodiment of the present invention, the thickness of the first metal layer and the second metal layer is 250nm to 500 nm. The thicknesses of the first metal layer and the second metal layer are set to be 250nm-500nm, so that the conductive performance of the metal grid sheet can be ensured, the thickness of the metal grid sheet is thinner, and the manufacturing cost is saved.

As an optional implementation manner, in an embodiment of the present invention, the thickness of the first metal oxide layer, the second metal oxide layer, the third metal oxide layer, and the fourth metal oxide layer is 30nm to 80 nm. The metal oxide layer with the thickness of 30nm-80nm can well control the reflectivity of the metal grid sheet.

As an alternative embodiment, in the embodiment of the present invention, the material of the substrate includes at least one of polyethylene terephthalate, cyclic olefin polymer, or polyimide, and the substrate made of the transparent optical material can have excellent optical performance, high strength, and excellent surface effect.

In a second aspect, the present invention discloses a functional module comprising a metal mesh sheet as described in the first aspect above. The functional module comprising the metal mesh sheet can obtain lower reflectivity, so that a user can more clearly view the metal mesh sheet or contents above or below the metal mesh sheet, and the use experience of the user is improved.

As an optional implementation manner, in an embodiment of the present invention, the functional module includes at least one of a conductive module, a touch module, or an electromagnetic wave transceiver module. Therefore, the metal grid sheet can be suitable for modules with different functions, and is wider in application range.

In a third aspect, the utility model discloses an electronic device comprising the functional module according to the second aspect. The electronic equipment comprising the functional module can obtain lower reflectivity, so that the display content of the electronic equipment can be checked more clearly when a user uses the electronic equipment, and the user experience is improved.

Compared with the prior art, the utility model has the beneficial effects that:

in the metal mesh sheet, the functional module and the electronic device provided by the embodiment of the utility model, the first mesh structure and the second mesh structure are respectively arranged on the two opposite sides of the substrate, the first metal layer and the second metal layer in the first mesh structure and the second mesh structure are used for conducting electricity, and the reflectivity of the first metal layer and the second metal layer is higher, so that the reflectivity introduced by the first metal layer and the second metal layer is reduced by the first metal oxide layer and the second metal oxide layer respectively arranged on the two sides of the first metal layer, and the third metal oxide layer and the fourth metal oxide layer respectively arranged on the two sides of the second metal layer, so that when a user uses the metal mesh sheet, the light reflected into the eyes of the user can be reduced, the discomfort caused by too much light is further reduced, and the user can more clearly view the content positioned on the lower layer or the upper layer of the metal mesh sheet, the use experience is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a metal mesh sheet provided by the present invention.

Icon: 1. a substrate; 2. a first mesh structure; 3. a second lattice structure; 4. a first protective layer; 5. a second protective layer; 11. a first side surface; 12. a second side surface; 21. a first metal oxide layer; 22. a first metal layer; 23. a second metal oxide layer; 31. a third metal oxide layer; 32. a second metal layer; 33. a fourth metal oxide layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the utility model and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The technical solution of the present invention will be further described with reference to the following embodiments and the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a metal mesh sheet according to the present invention. In a first aspect, the present invention provides a metal mesh sheet comprising a substrate 1, a first mesh structure 2 and a second mesh structure 3. The substrate 1 comprises a first side surface 11 and a second side surface 12 which are opposite, the first grid structure 2 comprises a first metal oxide layer 21, a first metal layer 22 and a second metal oxide layer 23 which are sequentially stacked, the first metal oxide layer 21 is arranged on the first side surface 11, the second grid structure 3 comprises a third metal oxide layer 31, a second metal layer 32 and a fourth metal oxide layer 33 which are sequentially stacked, and the third metal oxide layer 31 is arranged on the second side surface 12.

It is understood that the first mesh structure 2 and the second mesh structure 3 are respectively disposed on two sides of the substrate 1, and the mesh patterns of the first mesh structure 2 and the second mesh structure 3 may be rhombus, rectangular quadrangle or regular polygon, and specifically, the mesh patterns may be disposed according to actual situations, and are not limited herein.

The utility model provides a metal grid sheet, two sides of a substrate 1 are respectively provided with a first grid structure 2 and a second grid structure 3, the first grid structure 2 and the second grid structure 3 respectively comprise a first metal layer 22 and a second metal layer 32 for conducting, because of the influence of self materials, the reflectivity of the metal grid sheet can be increased when the first metal layer 22 and the second metal layer 32 play a role of conducting, moreover, the first metal layer 22 and the second metal layer 32 are respectively arranged on two sides of the substrate 1, and the first metal layer 22 and the second metal layer 32 are not overlapped, therefore, when the metal grid sheet is viewed from the front side and the back side, the structures of the first metal layer 22 and the second metal layer 32 can be simultaneously viewed, namely, when the metal grid sheet is viewed from the front side or the back side, the metal grid sheet can be simultaneously influenced by the light reflection of the first metal layer 22 and the second metal layer 32, therefore, the metal mesh sheet provided by the present invention is provided with a first metal layer 22 and a second metal layer 32 for conducting electricity in the first mesh structure 2 and the second mesh structure 3, and further provided with a first metal oxide layer 21, a second metal oxide layer 23, a third metal oxide layer 31 and a fourth metal oxide layer 33, wherein the first metal oxide layer 21 and the third metal oxide layer 31 are respectively arranged between the first metal layer 22 and the second metal layer 32 and the substrate 1, the second metal oxide layer 23 and the fourth metal oxide layer 33 are respectively arranged on the outer surfaces of the first metal layer 22 and the second metal layer 32, and light can be prevented from being directly reflected from the first metal layer 22 and the second metal layer 32 into the eyes of users by using the self-characteristics of the first metal oxide layer 21, the second metal oxide layer 23, the third metal oxide layer 31 and the fourth oxide layer, the reflectivity of the metal grid sheet is reduced, so that a user can check the metal grid sheet more clearly or check contents above or below the metal grid sheet no matter the user checks the metal grid sheet from the front side or the back side, and the visual display effect of the user when the user uses a device with the metal grid sheet is improved.

Specifically, the material of the substrate 1 may include at least one of polyethylene terephthalate PET, cycloolefin polymer COP, and polyimide PI. The transparent optical materials such as polyethylene terephthalate (PET), cycloolefin polymer (COP) or polyimide PI have excellent optical performance, and the substrate 1 made of the materials has high strength and good light transmission effect.

In some embodiments, the material of the first metal layer 22 and the second metal layer 32 is copper, and the first metal oxide layer 21, the second metal oxide layer 23, the third metal oxide layer 31, and the fourth metal oxide layer 33 can be copper oxide. Since the conductive performance of copper is superior, the first metal layer 22 and the second metal layer 32 made of copper are selected to be beneficial to ensuring the conductive performance of the metal grid sheet. It is understood that in other embodiments, the first metal layer 22 and the second metal layer 32 made of silver, aluminum, gold, or nickel may be used. In addition, the first metal oxide layer 21, the second metal oxide layer 23, the third metal oxide layer 31, and the fourth metal oxide layer 33 may be copper oxide or copper nickel oxide. The first metal oxide layer 21, the second metal oxide layer 23, the third metal oxide layer 31 and the fourth metal oxide layer 33 made of copper oxide or copper nickel oxide are affected by their own color and reflectivity characteristics, for example, the copper oxide is black, so that the reflectivity of the metal mesh sheet is more favorably reduced than that of other materials.

In some embodiments, the first metal layer 22 and the second metal layer 32 have a thickness of 250nm to 500 nm. The thicknesses of the first metal layer 22 and the second metal layer 32 are set to be 250nm-500nm, such as 250nm, 275nm, 300nm, 350nm, 400nm, 450nm or 500nm, so that the sheet resistance of the metal grid sheet can be controlled within a small range, such as about 0.1 omega, and further the conductivity of the metal grid sheet is ensured.

In some embodiments, the first metal oxide layer 21, the second metal oxide layer 23, the third metal oxide layer 31, and the fourth metal oxide layer 33 have a thickness of 30nm to 80 nm. Illustratively, the thickness of the first, second, third, and fourth metal oxide layers 21, 23, 31, and 33 may be 30nm, 35nm, 40nm, 50nm, 60nm, 70nm, or 80 nm. The first metal oxide layer 21, the second metal oxide layer 23, the third metal oxide layer 31 and the fourth metal oxide layer 33 with the thicknesses of 30nm, 80nm and 30nm-80nm are selected, so that a good control effect on the reflectivity of the metal mesh sheet can be achieved, and meanwhile, a thin metal mesh sheet can be obtained.

In some embodiments, the metal mesh sheet further comprises a first protective layer 4 and a second protective layer 5, the first protective layer 4 being disposed on the first side 11, the first metal oxide layer 21 being disposed on a side of the first protective layer 4 facing away from the first side 11, the second protective layer 5 being disposed on the second side 12, and the third metal oxide layer 31 being disposed on a side of the second protective layer 5 facing away from the second side 12. It is understood that the first protective layer 4 and the second protective layer 5 are non-grid structures, and the first protective layer 4 is located between the first metal oxide layer 21 and the substrate 1, and the second protective layer 5 is located between the third metal oxide layer 31 and the substrate 1.

Considering that the substrate 1 is mostly made of polymer material, the haze of the substrate 1 is increased under high temperature condition due to the influence of the material of the substrate 1 itself, stain-like spots are formed on the surface of the substrate 1, and when the substrate 1 is made of, for example, polyethylene terephthalate (i.e., PET), if the substrate 1 is left in an environment of 150 c for 30 minutes, the components in PET are easily precipitated, so that the visual effect of the base material 1 becomes blurred, the visual effect of the metal mesh sheet is affected, and even the components precipitated from the PET affect the conductivity of the first mesh structure 2 and the second mesh structure 3, and therefore, a first protective layer 4 and a second protective layer 5 are additionally arranged between the base material 1 and the first grid structure 2 and the second metal grid structure, so as to prevent the base material 1 from being influenced by the high-temperature environment to damage the visual effect of the metal grid sheet and ensure the electric conductivity of the metal grid sheet.

Further, the material of the first protective layer 4 and the second protective layer 5 is acrylic resin. Adopt first protective layer 4 and the second protective layer 5 that acrylic resin made, not only can realize the effect of above-mentioned metal net piece high temperature resistance, simultaneously, can also strengthen the hardness of substrate 1, improve the structural reliability of metal net piece, in addition, choose for use first protective layer 4 and the second protective layer 5 that acrylic resin made, also can strengthen metal oxide's coating film adhesive force, improve the bonding strength between first metal oxide layer 21, second metal oxide layer 23 and the substrate 1.

Illustratively, the metal mesh sheet may be prepared by the following steps:

s1: and respectively plating a protective layer material, copper oxide, copper and copper oxide on the first side surface 11 and the second side surface 12 of the base material 1 in sequence by using a plating device to form a metal grid material.

S2: film pressing: and pressing the photosensitive material to the two sides of the metal grid material by using a vacuum film pressing machine.

S3: exposure: and exposing the front and back surfaces of the pressed metal mesh material by using an exposure machine to form a circuit pattern.

S4: and (3) developing: and stripping the exposed part of the photosensitive material subjected to light irradiation on the two sides of the metal material by using a developing device, and leaving the part which is not irradiated by light to form a corresponding grid pattern.

S5: etching: and removing the copper oxide, the copper and the part of the copper oxide which is not covered with the photosensitive material on the two sides of the metal grid material by etching the line body.

S6: stripping the film: and removing the residual photosensitive material on the surface of the metal grid material, thereby obtaining the metal grid sheet with the grid structure.

In a second aspect, the present invention provides a functional module comprising a metal mesh sheet as described in the first aspect above. Specifically, the functional module may be a conductive module, a touch module, or an electromagnetic wave transceiver module, wherein the conductive module may be a conductive film, the touch module may be a touch screen sensor or a touch screen, and the electromagnetic wave transceiver module may be a transparent antenna. The functional module with the metal grid sheet in the first aspect can obtain lower reflectivity, so that a user can more clearly view the content presented by the metal grid sheet or the content presented above or below the metal grid sheet, and the use experience of the user is improved.

In a third aspect, the present invention provides an electronic device, which includes the functional module described in the second aspect, specifically, the electronic device includes, but is not limited to, a mobile phone, a security computer, a notebook computer, a smart watch, a monitor, and the like. The electronic device with the functional module in the second aspect can obtain a lower reflectivity, so that a user can more clearly view display contents of the electronic device, such as display contents of a touch screen of a mobile phone, when using the electronic device, and the use experience of the user is improved.

The metal mesh sheet, the functional module and the electronic device disclosed in the embodiments of the present invention are described in detail, and the principle and the embodiments of the present invention are explained in detail by applying specific examples, and the description of the embodiments is only used to help understanding the metal mesh sheet, the functional module, the electronic device and the core concept thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A metal mesh sheet, comprising:

a substrate comprising opposing first and second sides;

and the second grid structure comprises a third metal oxide layer, a second metal layer and a fourth metal oxide layer which are sequentially stacked, and the third metal oxide layer is arranged on the second side surface.

2. The metallic mesh sheet according to claim 1, further comprising a first protective layer disposed on the first side, the first metal oxide layer disposed on a side of the first protective layer facing away from the first side, the second protective layer disposed on the second side, and the third metal oxide layer disposed on a side of the second protective layer facing away from the second side.

3. The metal mesh sheet according to claim 2, wherein the first protective layer and the second protective layer are made of acrylic resin.

4. The metal mesh sheet according to any one of claims 1 to 3, wherein the first metal layer and the second metal layer are made of copper, and the first metal oxide layer, the second metal oxide layer, the third metal oxide layer and the fourth metal oxide layer are made of copper oxide.

5. The metal mesh sheet according to claim 4, wherein the thickness of the first metal layer and the second metal layer is 250nm-500 nm.

6. The metallic grid sheet according to claim 4, wherein the thickness of the first, second, third and fourth metal oxide layers is 30-80 nm.

7. The metal grid sheet according to any one of claims 1 to 3, wherein the material of the substrate is one of polyethylene terephthalate, cyclic olefin polymer or polyimide.

8. A functional module, characterized in that it comprises a metal mesh sheet according to any one of the preceding claims 1-7.

9. The functional module according to claim 8, wherein the functional module comprises at least one of a conductive module, a touch module, or an electromagnetic wave transceiving module.

10. An electronic device, characterized in that the electronic device comprises a functional module according to claim 8 or 9.