CN215932600U - Touch screen and electronic equipment - Google Patents
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- CN215932600U CN215932600U CN202122070848.XU CN202122070848U CN215932600U CN 215932600 U CN215932600 U CN 215932600U CN 202122070848 U CN202122070848 U CN 202122070848U CN 215932600 U CN215932600 U CN 215932600U
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Abstract
The utility model discloses a touch screen and electronic equipment. The touch screen comprises a first metal grid layer, an insulating layer and a second metal grid layer which are sequentially stacked, wherein the first metal grid layer is provided with a plurality of first metal grid structures and a plurality of first discontinuous grids. According to the utility model, the first discontinuous grids are arranged between the first metal grid structures arranged at intervals, so that the color difference generated by gaps between the first metal grid structures and the first metal grid structures arranged at intervals is compensated, and the color difference of the touch screen is further reduced. In addition, the first fracture is arranged at the joint of the first discontinuous grid and the first metal grid structure, so that the problem of short circuit of the touch screen caused by the contact of the first discontinuous grid and the first metal grid structure is avoided. By adopting the touch screen provided by the utility model, the color difference generated by the touch screen can be effectively reduced.
Description
Technical Field
The utility model relates to the technical field of touch control, in particular to a touch screen and electronic equipment.
Background
In the related art, the touch screen is usually prepared by adopting continuously conducted metal grids, although the line width of the metal grids adopted in the preparation of the touch screen is extremely small (micro-nano level), the touch screen is still transparent macroscopically, and a certain color difference still exists in the touch screen in the use process.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model discloses a touch screen and electronic equipment, which can effectively reduce the chromatic aberration of the touch screen.
In order to achieve the above object, in a first aspect, the present application discloses a touch screen, which includes a first metal mesh layer, an insulating layer, and a second metal mesh layer, which are sequentially stacked;
the first metal grid layer is provided with a plurality of first metal grid structures and a plurality of first discontinuous grids, the first metal grid structures are arranged at intervals, each first discontinuous grid is arranged between two adjacent first metal grid structures, and a first fracture is arranged at the joint of each first discontinuous grid and the first metal grid structure, so that the first discontinuous grids are not in contact with the first metal grid structures;
the second metal grid layer is provided with a plurality of second metal grid structures which are arranged at intervals.
It can be understood that the first discontinuous grids are arranged between the first metal grid structures which are arranged at intervals, and the distance between two adjacent first metal grid structures is reduced through the first discontinuous grids, so that the color difference between the two adjacent first metal grid structures is compensated. In addition, this application still sets up first fracture in the junction of first discontinuous net and first metal grid structure for contactless between first discontinuous net and the first metal grid structure, thereby can avoid first discontinuous net and the contact of first metal grid structure and lead to the problem of touch-sensitive screen short circuit, and then guarantee when not influencing the usability of touch-sensitive screen, realize reducing the purpose of the colour difference of touch-sensitive screen.
As an optional implementation manner, in an embodiment of the first aspect of the present application, the first discontinuous grid is further provided with a plurality of second fractures, and the second fractures are spaced from the first fractures.
The plurality of second fractures are arranged on the first discontinuous grid, so that the risk of short circuit of the touch screen is reduced, meanwhile, the interference of the first discontinuous grid on the touch performance of the touch screen can be reduced, and the use performance of the touch screen is further ensured.
As an optional implementation manner, in an embodiment of the first aspect of the present application, each of the first discontinuous grids includes a plurality of first discontinuous grid units and a plurality of second discontinuous grid units connected to and located between the first discontinuous grid units, each of the first discontinuous grid units is connected to the first metal grid structure, and the plurality of second discontinuous grid units are connected in sequence;
the first non-continuous grid unit is provided with the first fractures and the second fractures, and the second non-continuous grid unit is provided with a plurality of the second fractures.
The first fracture is arranged on the first discontinuous grid unit, so that the first discontinuous grid is not contacted with the first metal grid structure, and the first discontinuous grid is prevented from influencing the service performance of the touch screen. The second fractures are arranged on the first discontinuous grid units and the second discontinuous grid units, so that the interference of large-area continuous grids on the touch performance of the touch screen can be prevented, and the risk of short circuit of the touch screen is reduced.
As an optional implementation manner, in an embodiment of the first aspect of the present application, each of the first metal grid structures includes a plurality of first metal units and a plurality of second metal units, the plurality of second metal units are connected to the plurality of first metal units in an interlaced manner, and a plurality of third fractures are provided in the first metal units or the second metal units.
It can be understood that, a plurality of third fractures are provided in the first metal unit or the second metal unit, that is, a plurality of third fractures are provided in the first metal grid structure, and the third fractures can further compensate for color difference generated by the touch screen.
As an optional implementation manner, in an embodiment of the first aspect of the present application, a plurality of the third fractures are uniformly and intermittently disposed on the first metal unit or the second metal unit.
It can be understood that the third fractures are uniformly and alternately arranged on the first metal unit or the second metal unit, so that the fractures on the first metal grid layer are distributed more uniformly, which is beneficial to further reducing the color difference generated by the touch screen.
As an optional implementation manner, in an embodiment of the first aspect of the present application, when the first metal unit is provided with the third fracture, the third fracture is located at a connection between the first metal unit and the second metal unit, so that the first metal unit and the second metal unit are disconnected from each other.
When the first metal unit is provided with the third fracture, the third fracture is located at the joint of the first metal unit and the second metal unit, and therefore the third fracture is formed beneficially. In other words, at the joint of the first metal unit and the second metal unit, the included angle of the metal units is larger, which is beneficial to forming a third fracture at the joint when preparing the first metal grid layer.
As an optional implementation manner, in an embodiment of the first aspect of the present application, the first metal grid structure further includes a plurality of first grid units, and a plurality of third fractures arranged at intervals are provided on one and the same first grid unit. Therefore, the third fractures are uniformly arranged on the first metal grid structure, and the color difference generated by the touch screen is reduced.
As an alternative implementation manner, in the embodiment of the first aspect of the present application, the line width of the first metal unit and the second metal unit is 0.5 μm to 10 μm, and the width of the third discontinuity is 4 μm to 10 μm.
It can be understood that the larger the line widths of the first metal unit and the second metal unit are, the more favorable the signal transmission is, but the larger the line width is, the larger the color difference of the touch screen is, so that the line widths of the first metal unit and the second metal unit are limited within the above range, which is favorable for reducing the color difference generated by the touch screen while ensuring that the first metal grid structure can realize the signal transmission performance. In addition, in order to ensure that a third fracture can be formed at the joint of the first metal unit and the second metal unit, the width of the third fracture needs to be greater than the line width of the first metal unit and the second metal unit.
As an optional implementation manner, in an embodiment of the first aspect of the present application, the first metal grid structure further includes a plurality of first grid units, the first grid units are diamond-shaped, a diagonal length of each first grid unit is 50 μm to 650 μm, and an aperture ratio of the first metal grid structure is greater than or equal to 85%.
When the maximum diagonal length of the first grid unit meets the above limit, the size of the first grid unit is appropriate, the sheet resistance of the first metal grid is appropriate, and the normal working requirement of the touch screen can be ensured. When the diagonal length of the first grid unit is less than 50 μm, it is difficult to prepare the first metal grid structure; when the length of the diagonal line of the first grid unit is larger than 650 μm, the sheet resistance of the first metal grid structure is larger, which is not favorable for the normal operation of the touch screen. Secondly, the aperture opening ratio of the first metal grid structure is limited to be greater than or equal to 85% so as to ensure the quantity of light rays which can be transmitted by the first metal grid structure, and further ensure the display performance of the touch screen.
As an alternative implementation, in an embodiment of the first aspect of the present application, the sheet resistance of the first metal mesh structure is less than or equal to 50 Ω/□. Therefore, the signal transmission of the first metal grid structure is facilitated, the energy loss caused by the overlarge sheet resistance of the first metal grid structure is reduced, and the working performance of the touch screen is further ensured.
As an optional implementation manner, in an embodiment of the first aspect of the present application, the second metal grid layer further includes a plurality of second discontinuous grids, each of the second discontinuous grids is respectively disposed between two adjacent second metal grid structures, and a fourth fracture is disposed at a connection between the second discontinuous grid and the second metal grid structure, so that the second discontinuous grid is not in contact with the second metal grid structure.
And second discontinuous grids are arranged between the second metal grid structures which are arranged at intervals, and the distance between two adjacent second metal grid structures is reduced through the second discontinuous grids, so that the color difference between the two adjacent second metal grid structures is compensated. Meanwhile, a fourth fracture is arranged at the joint of the second discontinuous grid and the second metal grid structure, so that the second discontinuous grid is not in contact with the second metal grid structure, the problem of short circuit of the touch screen caused by contact of the second discontinuous grid and the second metal grid structure can be avoided, and the purpose of reducing the color difference of the touch screen is achieved while the use performance of the touch screen is not influenced.
As an optional implementation manner, in an embodiment of the first aspect of the present application, the second discontinuous grid is further provided with a plurality of fifth fractures, and the fifth fractures and the fourth fractures are arranged at intervals.
The plurality of fifth fractures are arranged on the second discontinuous grid, so that the risk of short circuit of the touch screen is reduced, meanwhile, the interference of the second discontinuous grid on the touch performance of the touch screen can be reduced, and the use performance of the touch screen is further ensured.
As an optional implementation manner, in an embodiment of the first aspect of the present application, each of the second discontinuous grids includes a plurality of third discontinuous grid units and a plurality of fourth discontinuous grid units connected to and located between the third discontinuous grid units, each of the third discontinuous grid units is connected to the second metal grid structure, and the plurality of fourth discontinuous grid units are connected in sequence;
the third discontinuous grid unit is provided with the fourth fracture and the fifth fracture, and the fourth discontinuous grid unit is provided with a plurality of the fifth fractures;
and the fourth fracture is arranged on the third discontinuous grid unit, so that the second discontinuous grid is not contacted with the second metal grid structure, and the influence of the second discontinuous grid on the service performance of the touch screen is prevented. The third discontinuous grid unit and the fourth discontinuous grid unit are provided with the fifth fractures, so that the interference of large-area continuous grids on the touch performance of the touch screen can be prevented, and the risk of short circuit of the touch screen is reduced.
As an optional implementation manner, in an embodiment of the first aspect of the present application, an arrangement direction of each of the second metal grid structures is the same as or perpendicular to an arrangement direction of each of the first metal grid structures.
It can be understood that the arrangement direction of the second metal grid structure and the arrangement direction of the first metal grid structure may be various, and the use performance requirement of the touch screen may be determined more specifically.
As an optional implementation manner, in an embodiment of the first aspect of the present application, each of the second metal grid structures includes a plurality of third metal units and a plurality of fourth metal units, the plurality of third metal units and the plurality of fourth metal units are connected in an interlaced manner, and the third metal units or the fourth metal units are provided with a plurality of sixth fractures.
It can be understood that, by providing a plurality of sixth fractures on the third metal unit or the fourth metal unit, that is, by providing a plurality of sixth fractures on the second metal grid structure, the color difference generated by the touch screen can be further compensated.
As an optional implementation manner, in an embodiment of the first aspect of the present application, when the third metal unit is provided with the sixth fracture, the sixth fracture is located at a connection between the third metal unit and the fourth metal unit, so that the third metal unit and the fourth metal unit are disconnected from each other.
When the third metal unit is provided with the sixth fracture, the sixth fracture is located at the joint of the third metal unit and the fourth metal unit, so that the sixth fracture is formed. In other words, at the joint of the third metal unit and the fourth metal unit, the included angle of the metal units is larger, which is beneficial to forming the sixth fracture at the joint.
In a second aspect, the present application discloses an electronic device, which includes the touch screen of the first aspect. The electronic device having the touch screen of the first aspect can achieve the purpose of reducing color difference.
In a third aspect, the present application discloses a method for manufacturing a touch screen, where the method for manufacturing a touch screen is used to manufacture the touch screen of the first aspect, and the method for manufacturing a touch screen includes:
forming the first metal mesh layer on the first side of the insulating layer;
forming the second metal mesh layer on the second side of the insulating layer;
wherein the second face is opposite to the first face.
By adopting the preparation method, the touch screen of the first aspect can be produced and prepared conveniently, efficiently and massively.
As an optional implementation manner, in an embodiment of the third aspect of the present application, the forming the first metal mesh layer on the first side of the insulating layer includes
Arranging a first photosensitive adhesive on the first surface;
imprinting a first groove corresponding to the pattern of the first metal grid layer on the first photosensitive adhesive by using a first mold;
and filling metal slurry along the first groove to form the first metal grid layer.
The first metal grid layer can be simply and rapidly prepared by adopting the method.
As an alternative implementation, in an embodiment of the third aspect of the present application, the forming the second metal mesh structure on the second side of the insulating layer includes
Arranging a second photosensitive adhesive on the second surface;
stamping a second groove corresponding to the pattern of the second metal grid layer on the second photosensitive adhesive by using a second mould;
and filling metal slurry along the second groove to form the second metal grid layer.
The second metal grid layer can be simply and rapidly prepared by adopting the method.
Compared with the prior art, the utility model has the beneficial effects that:
the application provides a touch-sensitive screen and electronic equipment, it is including the first metal grid layer, insulating layer and the second metal grid layer that stack gradually the setting, and first metal grid layer has a plurality of first metal grids and a plurality of first discontinuous grid. According to the touch screen, the first discontinuous grids are arranged between the first metal grids arranged at intervals, so that the color difference generated by gaps between the first metal grid structures and the first metal grid structures arranged at intervals is compensated, and the color difference of the touch screen is reduced. Meanwhile, the first fracture is arranged at the joint of the first discontinuous grid and the first metal grid, so that the first discontinuous grid is not in contact with the first metal grid, the problem that the touch screen is short-circuited due to the contact of the first discontinuous grid and the first metal grid can be avoided, and the purpose of reducing the color difference of the touch screen is achieved while the use performance of the touch screen is not influenced.
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 view of a stacked structure of a touch screen according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a first metal mesh layer disclosed in an embodiment of the present invention;
FIG. 3 is an enlarged view of area A in FIG. 2;
fig. 4 is an enlarged view of the region B in fig. 3;
FIG. 5 is an enlarged view of area C of FIG. 2;
FIG. 6 is an enlarged view of area D in FIG. 5;
fig. 7 is a schematic structural view of a first metal mesh layer in which first mesh cells are regular hexagons;
FIG. 8 is a schematic structural diagram of a first metal mesh layer with irregular polygon first mesh cells;
FIG. 9 is a schematic structural diagram of a second metal mesh layer disclosed in the embodiments of the present invention;
fig. 10 is an enlarged view of region E in fig. 9;
FIG. 11 is an enlarged view of area F of FIG. 10;
fig. 12 is an enlarged view of the region G in fig. 9;
fig. 13 is an enlarged view of region H in fig. 12;
fig. 14 is a schematic structural view of the second metal mesh layer in which the second mesh cells are regular hexagons;
FIG. 15 is a schematic structural diagram of a second metal mesh layer with second mesh cells being irregular polygons;
FIG. 16 is a schematic structural diagram of an electronic device according to an embodiment of the disclosure;
FIG. 17 is a flowchart of a method for manufacturing a touch screen according to an embodiment of the present disclosure;
FIG. 18 is a flowchart of a method for manufacturing a touch screen according to an embodiment of the present invention;
fig. 19 is a flowchart of preparing a second metal mesh layer in the method for preparing a touch screen disclosed in the embodiment of the utility model.
Icon: 10-a touch screen; 11-a first metal mesh layer; 111-a first metal mesh structure; 111 a-a first metal unit; 111 b-a second metal unit; 111 c-a first grid cell; 112-a first non-continuous grid; 112 a-a first non-contiguous grid cell; 112 b-a second non-contiguous grid cell; 113-first discontinuity; 114-second discontinuity; 115-third discontinuity; 12-an insulating layer; 13-a second metal mesh layer; 131-a second metal grid structure; 131 a-a third metal unit; 131 b-a fourth metal unit; 131 c-a second grid cell; 132-a second non-continuous grid; 132 a-a third non-contiguous grid cell; 132 b-a fourth non-contiguous grid cell; 133-fourth discontinuity; 134-fifth discontinuity; 135-sixth discontinuity; 100-an electronic device.
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 by those skilled in the art as appropriate.
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.
In a first aspect, referring to fig. 1 to 3 together, an embodiment of the application discloses a touch screen 10, where the touch screen 10 includes a first metal mesh layer 11, an insulating layer 12, and a second metal mesh layer 13, which are sequentially stacked.
The first metal grid layer 11 has a plurality of first metal grid structures 111 and a plurality of first discontinuous grids 112, the plurality of first metal grid structures 111 are arranged at intervals, each first discontinuous grid 112 is respectively arranged between two adjacent first metal grid structures 111, and a first fracture is arranged at a connection part of each first discontinuous grid 112 and the first metal grid structure 111, so that the first discontinuous grid 112 is not in contact with the first metal grid structures 111.
The second metal mesh layer 13 has a plurality of second metal mesh structures 131, and the plurality of second metal mesh structures 131 are arranged at intervals.
It is understood that the first metal mesh structures 111 are arranged at intervals, and the arrangement direction thereof may be along the length direction or the width direction of the touch screen 10, which may be adjusted according to the actual situation, and this embodiment is not limited in this respect. Similarly, the second metal mesh structures 131 are arranged at intervals, and the arrangement direction thereof may be along the length direction or the width direction of the touch screen 10, which is not described herein again. The arrangement direction of the second metal grid structures 131 and the arrangement direction of the first metal grid structures 111 may be the same or perpendicular, so that the process of manufacturing the touch screen 10 is simpler. That is, the arrangement direction of the second metal mesh structure 131 and the arrangement direction of the first metal mesh structure 111 may be various, and may be determined according to the requirement of the use performance of the touch screen.
In the embodiment, the first discontinuous grids 112 are arranged between the first metal grid structures 111 arranged at intervals, so that a color difference generated by gaps between the first metal grid structures 111 and the first metal grid structures 111 arranged at intervals is compensated, and the color difference of the touch screen 10 is reduced. In addition, in this embodiment, the first fracture 113 is further disposed at the connection between the first discontinuous grid 112 and the first metal grid structure 111, so that the first discontinuous grid 112 is not in contact with the first metal grid structure 111, and thus the problem of short circuit of the touch screen 10 due to contact between the first discontinuous grid 112 and the first metal grid structure 111 can be avoided, and the purpose of reducing color difference of the touch screen 10 is achieved while the usability of the touch screen 10 is not affected.
Referring to fig. 3 and 4, in some embodiments, the first discontinuous grid 112 further includes a plurality of second fractures 114, and the second fractures 114 are spaced apart from the first fractures 113. By arranging the plurality of second fractures 114 on the first discontinuous grid 112, the risk of short circuit of the touch screen 10 is reduced, the interference of the first discontinuous grid 112 on the touch performance of the touch screen 10 is prevented, and the use performance of the touch screen 10 is ensured.
Specifically, the widths of the first discontinuity 113 and the second discontinuity 114 are the same, and the widths d of the first discontinuity 113 and the second discontinuity 1141Is 4 μm to 10 μm, for example, the width d of the first discontinuity 113 and the second discontinuity 1141May be 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm. The first fracture 113 and the second fracture 114 have suitable fracture widths so as to reduce the color difference generated by the touch screen 10 while ensuring the normal working performance of the touch screen 10. In other words, when the first discontinuity 113 and the second discontinuity 114 have the width d1When the width d of the first and second interruptions 113 and 114 is less than 4 μm, the touch screen 10 is easily micro-short-circuited1When the thickness is larger than 10 μm, the color difference generated by the touch screen 10 is more obvious.
Further, each of the first discontinuous grids 112 includes a plurality of first discontinuous grid units 112a and a plurality of second discontinuous grid units 112b, each of the first discontinuous grid units 112a is connected to the first metal grid structure 111, and the plurality of second discontinuous grid units 112b are sequentially connected and located between the plurality of first discontinuous grid units 112 a. The first discontinuous grid unit 111a is provided with a first fracture 113 and a second fracture 114, and the second discontinuous grid unit 112b is provided with a plurality of second fractures 114. In this way, due to the first fracture 113 disposed on the first discontinuous grid unit 112a, the first discontinuous grid 112 and the first metal grid structure 111 may not be contacted, and the first discontinuous grid 112 is prevented from affecting the usability of the touch screen 10.
It can be understood that, since the two spaced first metal mesh structures 111 correspond to a capacitor, if a large area of continuous mesh exists between the two spaced first metal mesh structures 111, which corresponds to a large area of suspended blocks existing between the two spaced first metal mesh structures 111, the capacitance of the capacitor is affected, and thus the touch performance of the touch screen 10 is disturbed. Therefore, the second fractures 114 disposed on the first discontinuous grid unit 112a and the second discontinuous grid unit 112b can prevent the large-area continuous grid from interfering with the touch performance of the touch screen 10, and reduce the risk of short circuit of the touch screen 10.
Further, along the arrangement direction of the plurality of first metal grid structures 111, the first fractures 113 and the second fractures 114 on the same first discontinuous grid unit 112a are located on the same straight line, and at least two second fractures 114 on the second discontinuous grid unit 112b are located on the same straight line.
It can be understood that the first discontinuity 113 and the second discontinuity 114 on the same first discontinuous grid unit 112a are located on the same straight line, and the extending direction of the straight line is the same as the arrangement direction of the first metal grid structure 111. Accordingly, at least two second discontinuities 114 of the second discontinuous grid unit 112b are located on the same straight line, and the extending direction of the straight line is also the same as the arrangement direction of the first metal grid structure 111.
By limiting the first fracture 113 and the second fracture 114 on the same first discontinuous grid unit 112a to be located on the same straight line (shown as M in fig. 3), and at least two second fractures 114 on the second discontinuous grid unit 112b to be located on the same straight line (shown as N in fig. 3), on one hand, the first fracture 113 and the second fracture 114 are favorably and uniformly distributed on the first discontinuous grid 112, and the color difference generated by the touch screen 10 is reduced. On the other hand, the design of the pattern of the first discontinuous grid 112 is facilitated, in the actual preparation process, the preparation of the first discontinuous grid 112 is to firstly prepare the mold with the pattern of the first discontinuous grid 112, and then prepare the required first discontinuous grid 112 by using the mold, so that the first fractures 113 and the second fractures 114 on the same first discontinuous grid unit 112a are arranged on the same straight line, and the at least two second fractures 114 on the second discontinuous grid unit 112b are arranged on the same straight line, so that the mold with the pattern of the first discontinuous grid 112 can be conveniently prepared.
It can be understood that the first discontinuity 113 and the second discontinuity 114 on the same first discontinuous grid unit 112a may not be located on the same straight line, and the second discontinuity 114 on the second discontinuous grid unit 112b may not be located on the same straight line, which may be adjusted and set according to actual conditions, which is not limited in this embodiment.
Optionally, the first non-continuous grid unit 112a and the second non-continuous grid unit 112b may be regular polygonal grids or irregular grids, such as parallelograms, rhombuses, hexagons, etc., and the setting may be adjusted according to the actual situation, which is not limited in this embodiment.
Referring to fig. 5, in some embodiments, each first metal grid structure 111 includes a plurality of first metal units 111a and a plurality of second metal units 111b, the plurality of second metal units 111b are connected to the plurality of first metal units 111a in a staggered manner, and a plurality of third fractures 115 are disposed on the first metal unit 111a or the second metal unit 111b, that is, a plurality of third fractures 115 are disposed on the first metal grid structure 111. In the case that the first fracture 113 is provided at the connection of the first discontinuous grid 112 and the first metal grid structure 111 and the second fracture 114 is provided on the first discontinuous grid 112, there is still a certain color difference in the touch screen 10. Therefore, by providing the plurality of third discontinuities 115 on the first metal mesh structure 111, the color difference generated by the touch screen 10 can be compensated.
Further, when the first metal unit 111a is provided with the third discontinuity 115, the third discontinuity 115 is located at a connection of the first metal unit 111a and the second metal unit 111b, so that the first metal unit 111a is disconnected from the second metal unit 111 b. Thus, the formation of the third discontinuity 115 is facilitated. In other words, at the joint of the first metal unit 111a and the second metal unit 111b, the included angle of the metal units is larger, which is beneficial to forming the third discontinuity 115 at the joint when preparing the first metal mesh layer 11. In addition, when the third fracture 115 is arranged, the conductivity of the first metal grid structure 111 needs to be ensured, so that when the third fracture 115 is arranged at the joint of the first metal unit 111a and the second metal unit 111b, it can be ensured that when the third fracture 115 is arranged on the first metal unit 111a, a signal at the third fracture 115 can still be transmitted through the second metal unit 111 b.
It is understood that, in other embodiments, when the third discontinuity 115 is provided on the second metal unit 111b, the third discontinuity 115 on the second metal unit 111b may also be located at the connection between the second metal unit 111b and the first metal unit 111 a.
Optionally, the plurality of third discontinuities 115 are uniformly and alternately arranged on the first metal unit 111a or the second metal unit 111b, so that the distribution of the discontinuities on the first metal mesh layer 11 is more uniform, which is beneficial to further reducing the color difference generated by the touch screen 10.
Referring to fig. 6, in some embodiments, the line width of the first metal unit 111a is equal to the line width of the second metal unit 111b to reduce the color difference caused by touch (the first metal unit 111 and the second metal unit 111 in fig. 6)The thickness of the line width of the cell 111b is different only to distinguish that the two cells belong to different cells, and does not represent that the line widths of the first metal cell 111 and the second metal cell 111b are different). Wherein the line widths d of the first metal unit 111a and the second metal unit 111b2Is 0.5-10 μm. For example, the line widths d of the first and second metal units 111a and 111b20.5 μm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, or the like. It can be understood that the larger the line widths of the first metal unit 111a and the second metal unit 111b are, the more favorable the signal transmission is, but the larger the line widths are, the larger the color difference of the touch screen 10 is, therefore, limiting the line widths of the first metal unit 111a and the second metal unit 111b in the above range is favorable for reducing the color difference generated by the touch screen 10 while ensuring that the first metal mesh structure 111 can realize the signal transmission performance.
It can be appreciated that, to further reduce the color difference of the touch screen 10, the line widths d of the first and second discontinuous grid cells 112a and 112b are reduced when the first metal grid layer 11 is prepared3And the line widths d of the first and second metal units 111a and 111b2Are equal.
Further, the width d of the third discontinuity 1154Is 4 μm to 10 μm, for example, the width d of the third discontinuity 1154May be 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm. It is considered that in order to be able to form the third discontinuity 115, the width of the third discontinuity 115 needs to be greater than the line widths of the first and second metal units 111a and 111 b.
In some embodiments, the first metal grid structure 111 includes a plurality of first grid units 111c, a plurality of third fractures 115 are disposed on a same first grid unit 111c at intervals, and the plurality of third fractures 115 are located on a same straight line along an arrangement direction of the plurality of first metal grid structures 111. In this way, the third fractures 115 are favorably and uniformly arranged on the first metal grid structure 111, so that color difference generated by the touch screen 10 is reduced, and secondly, along the arrangement direction of the first metal grid structure 111, the plurality of third fractures 115 are located on the same straight line, so that the third fractures 115 are arranged regularly, and the continuity of the first metal grid structure 111 is favorably checked. When the plurality of third discontinuities 115 are located on the same straight line, the straight line is along the arrangement direction of the first metal grid structure 111.
It is understood that the plurality of third interruptions 115 may not be located on the same straight line, and the setting may be adjusted according to actual conditions, which is not specifically limited in this embodiment.
Referring to fig. 2, 7 and 8, optionally, the first grid unit 111c may be a regular polygonal grid or an irregular grid, such as a parallelogram, a rhombus, a hexagon, etc., and the setting may be adjusted according to the actual situation, which is not limited in this embodiment.
Illustratively, when the first grid cell 111c has a diamond shape, the diagonal length d of the first grid cell 111c550 μm to 650 μm, for example, the diagonal length d of the first grid cell 111c5Can be 50 μm, 150 μm, 250 μm, 350 μm, 450 μm, 550 μm or 650 μm, etc. It is understood that, when actually manufacturing the touch screen 10, the first grid cells 111c are usually designed to be diamond-shaped, so as to reduce moire generated by the touch screen 10. The setting may be adjusted according to actual conditions, and this embodiment is not particularly limited.
When the length of the diagonal line of the first grid unit 111c meets the above-mentioned limit, the size of the first grid unit 111c is appropriate, and the sheet resistance of the first metal grid structure 111 is appropriate, so that the normal working requirement of the touch screen 10 can be ensured. When the diagonal length of the first grid unit 111c is less than 50 μm, the first grid unit 111c is very small, which makes it difficult to prepare the first metal grid structure 111; when the diagonal length of the first grid unit 111c is greater than 650 μm, the sheet resistance of the first metal grid structure 111 is large, so that the signal transmission resistance of the first metal grid structure 111 is large, which is not favorable for the normal operation of the touch screen 10.
Further, the aperture ratio of the first metal grid structure 111 is greater than or equal to 85%, that is, the hollow area of the first metal grid structure 111 is greater than or equal to 85% of the area of the first metal grid structure 111. For example, the first metal mesh structure 111 may have an opening ratio of 85%, 87.5%, 90%, 92.5%, 95%, or 97.5%, etc. The aperture ratio of the first metal mesh structure 111 is limited to the aforementioned range to ensure that the first metal mesh structure 111 can transmit enough light, thereby ensuring the display performance of the touch screen 10.
In some embodiments, the sheet resistance of the first metal mesh structure 111 is less than or equal to 50 Ω/□. For example, the sheet resistance of the first metal mesh structure 111 may be 50 Ω/□, 40 Ω/□, 30 Ω/□, 20 Ω/□, or 10 Ω/□, etc. It can be understood that when the sheet resistance of the first metal mesh structure 111 satisfies the above requirement, the signal transmission of the first metal mesh structure 111 is facilitated, and the influence on the working performance of the touch screen 10 due to the excessive sheet resistance of the first metal mesh structure 111 is reduced. In other words, the sheet resistance of the two first metal grid structures 111 with the same size and dimensions, the sheet resistance of the first metal grid structure 111 with the fracture is larger than the sheet resistance of the first metal grid structure 111 without the fracture, and the larger the sheet resistance is, the poorer the working performance of the touch screen 10 is, therefore, the sheet resistance of the first metal grid structure 111 with the fracture is limited within the above range, which is beneficial to ensuring the working performance of the touch screen 10.
In some embodiments, the first grid cell 111c, the first non-contiguous grid cell 112a, and the second non-contiguous grid cell 112b are equal in size. Since the first metal grid unit 111c, the first discontinuous grid unit 112a and the second discontinuous grid unit 112b are all grid units formed by cross-connecting metal strips, the metal strips can be uniformly distributed in the first metal grid layer 11, which is beneficial to reducing color difference generated by the touch screen 10.
Referring to fig. 9, in some embodiments, the second metal grid layer 13 further includes a plurality of second discontinuous grids 132, and each second discontinuous grid 132 is respectively disposed between two adjacent second metal grid structures 131.
It can be understood that, by disposing the second discontinuous grid 132 between the second metal grid structures 131 arranged at intervals, the color difference generated by the gaps between the second discontinuous grid 132 and the second discontinuous grid 132 arranged at intervals is compensated, and thus the color difference of the touch screen 10 is reduced.
Further, a fourth fracture 133 is provided at the connection of the second discontinuous grid 132 and the second metal grid structure 131, so that the second discontinuous grid 132 is not in contact with the second metal grid structure 131. Therefore, the problem of short circuit of the touch screen 10 caused by the contact between the second discontinuous grid 132 and the second metal grid structure 131 can be avoided, and the purpose of reducing the color difference of the touch screen 10 is achieved while the use performance of the touch screen 10 is not affected.
Further, referring to fig. 10 and 11, the second discontinuous grid 132 is further provided with a plurality of fifth fractures 134, and the fifth fractures 134 and the fourth fractures 133 are spaced apart from each other. By arranging the fifth fractures 134 on the second discontinuous grid 132, a large-area continuous grid formed between the second metal grid structures 132 arranged at intervals can be avoided, which is beneficial to reducing the risk of short circuit of the touch screen 10 and preventing the second discontinuous grid 132 from interfering with the touch performance of the touch screen 10, thereby ensuring the use performance of the touch screen 10.
In particular, the widths of the fourth discontinuity 133 and the fifth discontinuity 134 are the same, and the widths d of the fourth discontinuity 133 and the fifth discontinuity 1346Is 4 μm to 10 μm, for example, the width d of the fourth discontinuity 133 and the fifth discontinuity 1346May be 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm. The fracture widths of the fourth fracture 133 and the fifth fracture 134 are suitable for reducing the color difference generated by the touch screen 10 while ensuring the normal working performance of the touch screen 10. In other words, when the fourth discontinuity 133 and the fifth discontinuity 134 have the width d6When the width d of the fourth and fifth discontinuities 133 and 134 is less than 4 μm, the touch screen 10 is easily micro-short-circuited6When the thickness is larger than 10 μm, the color difference generated by the touch screen 10 is more obvious.
Further, each of the second non-continuous grids 132 includes a plurality of third non-continuous grid cells 132a and a plurality of fourth non-continuous grid cells 132b, each of the third non-continuous grid cells 132a is connected to the second metal grid structure 131, and the plurality of fourth non-continuous grid cells 132b are sequentially connected and located between the plurality of third non-continuous grid cells 132 a. A fourth fracture 133 and a fifth fracture 134 are arranged on the third discontinuous grid unit 132a, and a plurality of fifth fractures 134 are arranged on the fourth discontinuous grid unit 132 b. In this way, due to the fourth fracture 133 disposed on the third discontinuous grid unit 132a, the second discontinuous grid 132 and the second metal grid structure 131 are not contacted, and the second discontinuous grid 132 is prevented from affecting the usability of the touch screen 10.
It can be understood that, since the two spaced second metal mesh structures 131 are equivalent to a capacitor, if a large area of continuous mesh exists between the two spaced second metal mesh structures 131, which is equivalent to a large area of floating blocks existing between the two spaced second metal mesh structures 131, the capacitance of the capacitor is affected, and thus the touch performance of the touch screen 10 is disturbed. Therefore, the fifth fractures 134 formed in the third discontinuous grid unit 132a and the fourth discontinuous grid unit 132b can prevent the large-area continuous grid from interfering with the touch performance of the touch screen 10, and reduce the risk of short circuit of the touch screen 10.
Further, along the arrangement direction of the plurality of second metal grid structures 131, the fourth fractures 133 and the fifth fractures 134 on the same third discontinuous grid unit 132a are located on the same straight line, and at least two fifth fractures 134 on the fourth discontinuous grid unit 132b are located on the same straight line.
It can be understood that the fourth discontinuity 133 and the fifth discontinuity 134 of the same third discontinuous grid unit 132a are located on the same straight line, and the extending direction of the straight line is the same as the arrangement direction of the second metal grid structure 131. Accordingly, at least two fifth discontinuities 134 of the fourth discontinuous grid unit 132b are located on the same straight line, and the extending direction of the straight line is also the same as the arrangement direction of the second metal grid structure 131.
By limiting the fourth fracture 133 and the fifth fracture 134 on the same third discontinuous grid unit 132a to be located on the same straight line (shown as O in fig. 10), and at least two fifth fractures 134 on the fourth discontinuous grid unit 112b to be located on the same straight line (shown as P in fig. 10), on one hand, the fourth fracture 133 and the fifth fracture 134 are favorably and uniformly distributed on the second discontinuous grid 132, and the color difference generated by the touch screen 10 is reduced. On the other hand, the design of the pattern of the second discontinuous grid 132 is facilitated, in the actual manufacturing process, the manufacturing of the second discontinuous grid 132 is to manufacture the mold with the pattern of the second discontinuous grid 132 first, and then the mold is used for manufacturing the required second discontinuous grid 132, so that the fourth fractures 133 and the fifth fractures 134 on the same third discontinuous grid unit 132a are arranged on the same straight line, and the at least two fifth fractures 134 on the fourth discontinuous grid unit 132b are arranged on the same straight line, so that the mold with the pattern of the second discontinuous grid 132 can be manufactured conveniently.
It can be understood that the fourth discontinuity 133 and the fifth discontinuity 134 on the same third discontinuous grid unit 132a may also not be located on the same straight line, and the fifth discontinuity 134 on the fourth discontinuous grid unit 112b may also not be located on the same straight line, which may be specifically adjusted and set according to an actual situation, which is not specifically limited in this embodiment.
Optionally, the second and fourth non-continuous grid units 132a and 132b may be regular polygonal grids or irregular grids, such as parallelograms, rhombuses, hexagons, etc., and the setting may be adjusted according to actual situations, which is not limited in this embodiment.
Referring to fig. 12, in some embodiments, each second metal grid structure 131 includes a plurality of third metal units 131a and a plurality of fourth metal units 131b, the plurality of third metal units 131a and the plurality of fourth metal units 131b are connected in a staggered manner, and a plurality of sixth openings 135 are disposed in the third metal units 131a or the fourth metal units 131 b. That is, a plurality of sixth openings 135 are provided on the second metal mesh structure 131. In the case that the fourth fracture 133 is provided at the connection part of the second discontinuous grid 132 and the second metal grid structure 131 and the fourth fracture 134 is provided on the second discontinuous grid 132, there is still a certain color difference in the touch screen 10. Therefore, by providing a plurality of sixth apertures 135 on the second metal mesh structure 131, color differences generated by the touch screen 10 may be compensated.
Further, when the third metal unit 131a is provided with the sixth discontinuity 135, the sixth discontinuity 135 is located at a connection between the third metal unit 131a and the fourth metal unit 131b, so that the third metal unit 131a is disconnected from the fourth metal unit 131 b. In this way, the formation of the sixth discontinuity 135 is facilitated. In other words, at the joint of the third metal unit 131a and the fourth metal unit 131b, the included angle of the metal units is larger, which is beneficial to forming the sixth discontinuity 135 at the joint when preparing the second metal mesh layer 13. In addition, when the sixth discontinuity 135 is disposed, the conductivity of the second metal mesh structure 131 needs to be ensured, so that the sixth discontinuity 135 is disposed at the connection between the third metal unit 131a and the fourth metal unit 131b, so as to ensure that when the sixth discontinuity 135 is disposed on the third metal unit 131a, the signal at the sixth discontinuity 135 can still be transmitted through the fourth metal unit 131 b.
It is understood that, in other embodiments, when the sixth discontinuity 135 is provided on the fourth metal element 131b, the sixth discontinuity 135 on the fourth metal element 131b may also be located at the connection between the fourth metal element 131b and the third metal element 131 a.
Optionally, the sixth discontinuities 135 are uniformly and intermittently disposed on the third metal unit 131a or the fourth metal unit 131b, so that the distribution of the discontinuities on the second metal mesh layer 13 is more uniform, which is beneficial to further reducing the color difference generated by the touch screen 10.
Referring to fig. 13, in some embodiments, the line width of the third metal unit 131 is equal to the line width of the fourth metal unit 131b (the line widths of the third metal unit 131 and the fourth metal unit 131b in fig. 13 are not equal to each other only to distinguish that the line widths of the third metal unit 131 and the fourth metal unit 131b belong to different units, which does not mean that the line widths of the third metal unit 131 and the fourth metal unit 131b are not equal to each other). Wherein the line width d of the third metal unit 131a or the fourth metal unit 131b7Is 0.5-10 μm. For example, the line width d of the third metal unit 131a or the fourth metal unit 131b70.5 μm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, or the like. It can be understood that the larger the line width of the third metal unit 131a or the fourth metal unit 131b is, the more favorable the signal transmission is, but the larger the line width is, the larger the color difference of the touch screen 10 is, therefore, the limitation of the line width of the third metal unit 131a or the fourth metal unit 131b in the above range is beneficial to ensure that the signal transmission is ensuredThe second metal mesh structure 131 can reduce color difference generated by the touch screen 10 while achieving signal transmission performance.
It can be appreciated that, in order to further reduce the color difference of the touch screen 10, the line widths d of the third and fourth discontinuous grid cells 132a and 112b are reduced when the second metal grid layer 13 is prepared8And the line widths d of the third metal unit 131a and the fourth metal unit 131b8Are equal.
Further, the width d of the sixth discontinuity 1359Is 4-10 μm. For example, the width d of the sixth opening 1359May be 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm. It is considered that in order to be able to form the sixth discontinuity 135, the width of the sixth discontinuity 135 needs to be greater than the line widths of the third metal unit 131a and the fourth metal unit 131 b.
In some embodiments, the second metal grid structure 131 includes a plurality of second grid units 131c, a plurality of sixth fractures 135 arranged at intervals are arranged on the same second grid unit 131c, and the plurality of sixth fractures 135 are located on the same straight line along the arrangement direction of the plurality of second metal grid structures 131. In this way, the sixth fractures 135 are favorably and uniformly arranged on the second metal grid structure 131, so that the color difference generated by the touch screen 10 is reduced, and secondly, along the arrangement direction of the second metal grid structure 131, the plurality of sixth fractures 135 are located on the same straight line, so that the sixth fractures 135 are arranged regularly, and the continuity of the first metal grid 111 is favorably checked. When the plurality of sixth discontinuities 135 are located on the same straight line, the straight line is along the arrangement direction of the second metal grid structure 131.
It is understood that the sixth cut-outs 135 may not be located on the same straight line, and the setting may be adjusted according to the actual situation, which is not specifically limited in this embodiment.
Referring to fig. 9, 14 and 15, optionally, the second grid unit 131c may be a regular polygonal grid or an irregular grid, such as a parallelogram, a rhombus, a hexagon, etc., and the setting may be adjusted according to actual situations, which is not limited in this embodiment.
Illustratively, when the second grid isWhen the cell 131c is a diamond shape, the diagonal length d of the second grid cell 131c1050 μm to 650 μm, for example, the diagonal length d of the second grid cell 131c10Can be 50 μm, 150 μm, 250 μm, 350 μm, 450 μm, 550 μm or 650 μm, etc. It is understood that the second grid cells 131c are often designed to be diamond-shaped when the touch screen 10 is actually manufactured, so that moire generated by the touch screen 10 can be reduced. The setting may be adjusted according to actual conditions, and this embodiment is not particularly limited.
When the length of the diagonal line of the second grid unit 131c meets the above-mentioned limit, the size of the second grid unit 131c is suitable, and the sheet resistance of the second metal grid structure 131 is suitable, so that the normal working requirement of the touch screen 10 can be ensured. When the diagonal length of the second grid unit 131c is less than 50 μm, the second grid unit 131c is very small, and the difficulty in preparing the second metal grid structure 131 is great; when the diagonal length of the second grid unit 131c is greater than 650 μm, the sheet resistance of the second metal grid structure 131 is large, so that the signal transmission resistance of the second metal grid structure 131 is large, which is not favorable for the normal operation of the touch screen 10.
Further, the aperture ratio of the second metal grid structure 131 is greater than or equal to 85%, that is, the hollow area of the second metal grid structure 131 is greater than or equal to 85% of the area of the second metal grid structure 131. For example, the second metal mesh structure 131 may have an aperture ratio of 85%, 87.5%, 90%, 92.5%, 95%, or 97.5%, etc. The reason for limiting the aperture ratio of the second metal mesh structure 131 within the aforementioned range is to ensure that the second metal mesh structure 131 can transmit enough light, thereby ensuring the display performance of the touch screen 10.
In some embodiments, the sheet resistance of the second metal mesh structure 131 is less than or equal to 50 Ω/□. For example, the sheet resistance of the second metal mesh structure 131 may be 50 Ω/□, 40 Ω/□, 30 Ω/□, 20 Ω/□, 10 Ω/□, or the like. It can be understood that, when the sheet resistance of the second metal mesh structure 131 meets the above requirements, the signal transmission of the second metal mesh structure 131 is facilitated, and the influence on the working performance of the touch screen 10 due to the excessive sheet resistance of the second metal mesh structure 131 is reduced. In other words, the sheet resistance of the two second metal grid structures 131 with the same size and dimensions, which is the second metal grid structure 131 with the fracture, is larger than the sheet resistance of the second metal grid structure 131 without the fracture, and the larger the sheet resistance is, the poorer the working performance of the touch screen 10 is, so that the sheet resistance of the second metal grid structure 131 with the fracture is limited in the above range, which is beneficial to ensuring the working performance of the touch screen 10.
In some embodiments, the second grid cell 1311c, the third non-contiguous grid cell 132a, and the fourth non-contiguous grid cell 132b are equal in size. Since the second grid unit 1311c, the third discontinuous grid unit 132a, and the fourth discontinuous grid unit 132b are all grid units formed by cross-connecting metal strips, the metal strips can be uniformly distributed in the second metal grid layer 13, which is beneficial to reducing color difference generated by the touch screen 10.
Optionally, the material of the insulating layer 12 is one of polyester resin, cyclic olefin polymer, polyimide, and photosensitive glue.
According to the touch screen 10 provided by the application, the first discontinuous grids 112 are arranged between the first metal grid structures 111 arranged at intervals, so that the color difference generated by gaps between the first metal grid structures 111 and the first metal grid structures 111 arranged at intervals is compensated, and the color difference of the touch screen is reduced. Secondly, a plurality of first fractures 113 and second fractures 114 are respectively arranged at the connection part of the first discontinuous grid 112 and the first metal grid structure 111 and on the first discontinuous grid 112, so that the first discontinuous grid 112 and the first metal grid structure 111 are not in contact, and interference to the touch screen 10 due to a large-area continuous grid is avoided. In addition, according to the present application, the plurality of third fractures 115 are further disposed on the first metal mesh structure 111, so that the fractures on the first metal mesh layer 11 are uniformly distributed, and further, the color difference of the touch screen 10 is reduced. The second metal mesh layer 13 of the present application has the same design method as the first metal mesh layer 11, and is not described herein again. By adopting the touch screen 10 provided by the application, the color difference generated by the touch screen 10 can be reduced.
In a second aspect, please refer to fig. 16, the present application further provides an electronic device 100, where the electronic device 100 includes the touch screen 10 according to the first aspect. The electronic device having the touch screen 10 of the first aspect described above can achieve the object of reducing color difference. Since the technical effects of the touch screen 10 have been fully described in the foregoing, the description thereof is omitted.
It is understood that the electronic device may include, but is not limited to, a cell phone, a tablet, a computer, a business display screen, and the like.
In a third aspect, referring to fig. 17, the present application further discloses a method for manufacturing a touch screen, where the method for manufacturing a touch screen is used to manufacture the touch screen of the first aspect, and the method for manufacturing a touch screen includes:
21. a first metal mesh layer is formed on the first side of the insulating layer.
22. A second metal mesh layer is formed on the second side of the insulating layer.
The second surface is arranged opposite to the first surface, the insulating layer at least comprises a layer of base material or photosensitive glue, namely the insulating layer can be a layer of base material, or a layer of photosensitive glue, or a layer of base material and a layer of photosensitive glue, and the like, and the base material can be polyester resin, cyclic olefin polymer, polyimide or the like.
By adopting the preparation method, the touch screen of the first aspect can be produced and prepared conveniently, efficiently and massively.
Specifically, referring to fig. 18, forming a first metal mesh layer on the first surface of the insulating layer may specifically include
211. A first photosensitive adhesive is disposed on the first face. The purpose of this step is to form a first metal mesh layer carrier, i.e. the first photosensitive glue can be formed as a carrier for the first metal mesh layer.
212. A first mold is used to imprint first trenches corresponding to the pattern of the first metal mesh layer on the first photoresist.
The first die is provided with a first metal grid layer pattern, and the first metal grid layer pattern comprises a first metal grid structure, a first discontinuous grid, a first fracture, a second fracture and a third fracture.
Step 213: and filling metal slurry along the first groove to form a first metal grid layer.
The metal paste is a chemical solvent containing silver or copper, the chemical solvent is volatile, and a first metal grid layer made of silver or copper can be formed after the chemical solvent in the metal paste is volatilized. The first metal grid layer can be simply and rapidly prepared by adopting the method.
Further, referring to fig. 19, a second metal mesh layer is formed on the second surface of the insulating layer, which specifically includes
221. A second photosensitive adhesive is disposed on the second surface. The purpose of this step is to form a second metal mesh layer carrier, i.e. a second photosensitive glue can be formed as a carrier for the second metal mesh layer.
222. A second mold is used to stamp a second groove corresponding to the pattern of the second metal mesh layer on the second photoresist.
The second die is provided with a second metal grid layer pattern, and the second metal grid layer pattern comprises a second metal grid structure, a second discontinuous grid, a fourth fracture, a fifth fracture and a sixth fracture.
223. And filling metal slurry along the second groove to form a second metal grid layer.
The metal paste is a chemical solvent containing silver or copper, the chemical solvent is volatile, and a second metal grid layer made of silver or copper can be formed after the chemical solvent in the metal paste is volatilized. The second metal grid layer can be simply and rapidly prepared by adopting the method.
Therefore, the touch screen has the advantages of simple preparation method, easiness in operation, easiness in preparation and low cost. In addition, the touch screen can be prepared by adopting an etching method, and details are not repeated here. The touch screen prepared by the method has the advantages of small color difference and good overall display effect, and the technical effect of the touch screen is fully explained on the first aspect, so that the details are not repeated.
The touch screen and the electronic device disclosed in the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by applying specific examples, and the description of the above embodiments is only used to help understanding the touch screen and the electronic device of the present invention and the core ideas thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (16)
1. A touch screen is characterized by comprising a first metal grid layer, an insulating layer and a second metal grid layer which are sequentially stacked;
the first metal grid layer is provided with a plurality of first metal grid structures and a plurality of first discontinuous grids, the first metal grid structures are arranged at intervals, each first discontinuous grid is arranged between two adjacent first metal grid structures, and a first fracture is arranged at the joint of each first discontinuous grid and the first metal grid structure, so that the first discontinuous grids are not in contact with the first metal grid structures;
the second metal grid layer is provided with a plurality of second metal grid structures which are arranged at intervals.
2. The touch screen of claim 1, wherein the first discontinuous grid is further provided with a plurality of second fractures, and the second fractures are spaced from the first fractures.
3. The touch screen of claim 2,
each first discontinuous grid comprises a plurality of first discontinuous grid units and a plurality of second discontinuous grid units which are connected with and positioned between the first discontinuous grid units, each first discontinuous grid unit is connected with the first metal grid structure, and the plurality of second discontinuous grid units are sequentially connected;
the first non-continuous grid unit is provided with the first fractures and the second fractures, and the second non-continuous grid unit is provided with a plurality of the second fractures.
4. The touch screen of claim 1, wherein each first metal grid structure comprises a plurality of first metal units and a plurality of second metal units, the plurality of second metal units are connected with the plurality of first metal units in a staggered manner, and a plurality of third fractures are formed in the first metal units or the second metal units.
5. The touch screen of claim 4, wherein a plurality of the third fractures are uniformly and intermittently disposed on the first metal element or the second metal element.
6. The touch screen of claim 4, wherein when the third break is provided in the first metal element, the third break is located at a connection between the first metal element and the second metal element, so that the first metal element is disconnected from the second metal element.
7. The touch screen of claim 6, wherein the first metal grid structure further comprises a plurality of first grid units, and a plurality of third fractures arranged at intervals are arranged on the same first grid unit.
8. The touch screen of claim 4, wherein the line width of the first metal unit and the second metal unit is 0.5 μm to 10 μm, and the width of the third discontinuity is 4 μm to 10 μm.
9. The touch screen of claim 4, wherein the first metal grid structure further comprises a plurality of first grid cells, the first grid cells are diamond-shaped, the diagonal length of the first grid cells is 50 μm-650 μm, and the aperture ratio of the first metal grid structure is greater than or equal to 85%.
10. A touch screen according to any of claims 1 to 9, wherein the sheet resistance of the first metal grid structure is less than or equal to 50 Ω/□.
11. The touch screen according to any one of claims 1 to 9, wherein the second metal mesh layer further comprises a plurality of second discontinuous meshes, each of the second discontinuous meshes is respectively disposed between two adjacent second metal mesh structures, and a fourth fracture is disposed at a connection between the second discontinuous meshes and the second metal mesh structures, so that the second discontinuous meshes are not in contact with the second metal mesh structures.
12. The touch screen of claim 11, wherein the second discontinuous grid is further provided with a plurality of fifth fractures, and the fifth fractures are spaced from the fourth fractures.
13. The touch screen of claim 12, wherein each of the second non-contiguous grids comprises a plurality of third non-contiguous grid cells and a plurality of fourth non-contiguous grid cells connected to and located between the third non-contiguous grid cells, each of the third non-contiguous grid cells being connected to the second metal grid structure, the plurality of fourth non-contiguous grid cells being connected in sequence;
the third discontinuous grid unit is provided with the fourth fracture and the fifth fracture, and the fourth discontinuous grid unit is provided with a plurality of the fifth fractures.
14. The touch screen of any one of claims 1 to 9, wherein each second metal grid structure comprises a plurality of third metal units and a plurality of fourth metal units, the plurality of third metal units are connected with the plurality of fourth metal units in an interlaced manner, and a plurality of sixth fractures are formed in the third metal units or the fourth metal units.
15. The touch screen of claim 14, wherein when the third metal element is provided with the sixth break, the sixth break is located at a connection of the third metal element and the fourth metal element, so that the third metal element is disconnected from the fourth metal element.
16. An electronic device characterized in that it comprises a touch screen according to any one of claims 1 to 15.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122070848.XU CN215932600U (en) | 2021-08-30 | 2021-08-30 | Touch screen and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122070848.XU CN215932600U (en) | 2021-08-30 | 2021-08-30 | Touch screen and electronic equipment |
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| CN215932600U true CN215932600U (en) | 2022-03-01 |
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| CN202122070848.XU Active CN215932600U (en) | 2021-08-30 | 2021-08-30 | Touch screen and electronic equipment |
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