CN215576570U - Spherical touch device - Google Patents
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- CN215576570U CN215576570U CN202120399114.3U CN202120399114U CN215576570U CN 215576570 U CN215576570 U CN 215576570U CN 202120399114 U CN202120399114 U CN 202120399114U CN 215576570 U CN215576570 U CN 215576570U
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Abstract
The utility model provides a spherical touch device which comprises a heat-shrinkable film layer, a first grid electrode and/or a second grid electrode. The heat-shrinkable film layer is attached to the outer surface of the spherical support and is provided with an inner film surface attached to the spherical support and an outer film surface opposite to the inner film surface; the first grid electrode is arranged on the outer membrane surface of the heat-shrinkable membrane layer, and the second grid electrode is arranged on the inner membrane surface of the heat-shrinkable membrane layer. According to the technical scheme, the capacitive touch screen with the multi-dimensional surface modeling can be obtained, so that the purposes and application scenes of the capacitive touch screen are enriched.
Description
Technical Field
The utility model relates to the technical field of capacitive touch control, in particular to a spherical touch control device.
Background
Touch control is ubiquitous, and since capacitive touch screens are widely applied to home products by jacobis, capacitive touch screens can be said to almost completely replace the original resistive touch screen technology on consumer electronics products. The technology of the metallic copper grid touch screen belongs to a promising cross-generation technology in the capacitive touch screen technology, and uses a copper layer with extremely low surface resistance (the surface resistance is less than 0.1 ohm) as a conductor, deposits the copper layer on an optical transparent substrate in a vacuum sputtering and vacuum evaporation mode, and manufactures a grid-shaped electrode in a yellow light process mode. The touch screen made by using the electrode has the following advantages: (1) line is not visible: the line precision of the line width of a visible area of a Metal Mesh (Metal Mesh) technology is less than 5 mu m, and the size reaches 110 inches; (2) super narrow frame and no frame design: the line width and line distance technical capability of the frame can reach 10/10 mu m; (3) the touch sensitivity and the pen touch precision are high: the report rate is higher than 120 points, and single-chip capacitive integrated touch control is realized without splicing multiple sheets; (4) the only oversized touch screen that can pass the environmental test: the migration (migration) problem does not occur under the high-temperature high-humidity voltage passing condition; (5) the glass medium touch screen is uniquely suitable for the first payment in the world and is larger than 10 mm: the touch in water can be realized, and the waterproof, explosion-proof and outdoor application design is met; (6) the only oversize can support extremely fine active and passive pens (precision pen writing): can be supported to the pen point by 2 mm; (7) the method extends tentacles to new fields of military affairs, medical treatment, industrial control, vehicle-mounted and the like, is closely applied to developing an electromagnetic shielding film (EMI shielding film) with China space companies at present, and also expands the new fields to the applications of military affairs, medical treatment, industrial control, vehicle-mounted and the like, and is not limited to the fields of business affairs, meeting rooms and education flat plates.
At present, most of existing touch screens are designed in a planar manner, curved surfaces are also designed in a one-dimensional (1D) bending manner, and two-dimensional (2D) and even three-dimensional (3D) touch technologies are mainly used. However, optical touch control cannot be compared with capacitive touch control in terms of accuracy and sensitivity, and a capacitive touch screen still has challenges to achieve a multi-dimensional curved surface model.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a spherical touch device, and aims to provide a capacitive touch screen with a multi-dimensional curved surface model so as to enrich the application scene of the capacitive touch screen.
To achieve the above object, the present invention provides a spherical touch device, including:
the heat-shrinkable film layer is attached to the outer surface of the spherical support and is provided with an inner film surface attached to the spherical support and an outer film surface opposite to the inner film surface; and the number of the first and second groups,
the first grid electrode is arranged on the outer membrane surface of the heat-shrinkable film layer, and the second grid electrode is arranged on the inner membrane surface of the heat-shrinkable film layer.
Optionally, the first grid electrode and the second grid electrode are both a sputtering layer or an evaporation layer, and the sputtering layer or the evaporation layer is plated on the outer surface of the heat-shrinkable film layer.
Optionally, the first grid electrode and the second grid electrode are both a metal foil layer or a conductive organic layer, and the metal foil layer or the conductive organic layer is adhered to the outer surface of the heat-shrinkable film layer.
Optionally, the conductive material of the first grid electrode and/or the second grid electrode is selected from any one or more of copper, nickel, silver, iron, chromium and organic conductive high molecular polymer.
Optionally, the heat-shrinkable film layer is any one of a polyethylene film, an unstretched polypropylene film, an aluminum-plated unstretched polypropylene film, a biaxially oriented polypropylene film, a coated biaxially oriented polypropylene film, a biaxially oriented polypropylene matt film, a double-sided or single-sided heat-sealing biaxially oriented polypropylene film, a polyester film, an aluminum-plated polyester film, a coated polyester film and a nylon film.
Optionally, the thickness of the heat-shrinkable film layer ranges from 9 μm to 500 μm; the thickness range of the first grid electrode is 0.1-50 mu m; the thickness range of the second grid electrode is 0.1-50 mu m.
Optionally, the spherical touch device further comprises the spherical support, and the spherical support is an insulator; or, the spherical support comprises a conductor and an insulating layer coated on the outer layer of the conductor.
Optionally, the material of the insulator is selected from any one or more of glass, plastic and metal oxide; the conductor is made of metal, and the insulating layer is made of any one or more of glass, plastic and metal oxide.
According to the spherical touch device, the heat-shrinkable film layer is attached to the outer surface of the spherical support, the first grid electrode is arranged on the outer film surface of the heat-shrinkable film layer, and/or the second grid electrode is arranged on the inner film surface of the heat-shrinkable film layer. According to the technical scheme, the capacitive touch screen with the multi-dimensional surface modeling can be obtained, so that the purposes and application scenes of the capacitive touch screen are enriched.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a spherical touch device according to an embodiment of the utility model;
fig. 2 is a schematic flow chart illustrating a manufacturing process of the spherical touch device shown in fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Thermal |
200 | |
| 300 | |
400 | |
| 500 | Flexible circuit board |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
A spherical touch device according to an embodiment of the present invention is provided, and the spherical touch device according to an embodiment of the present invention will be specifically described with reference to fig. 1 and fig. 2.
In an embodiment of the present invention, as shown in fig. 1, the spherical touch device includes:
the heat-shrinkable film layer 100 is attached to the outer surface of the spherical support 400, and the heat-shrinkable film layer 100 is provided with an inner film surface attached to the spherical support 400 and an outer film surface opposite to the inner film surface; and the number of the first and second groups,
the first grid electrode 200 is arranged on the outer membrane surface of the heat-shrinkable film layer 100, and the second grid electrode 300 is arranged on the inner membrane surface of the heat-shrinkable film layer 100.
In this embodiment, as shown in fig. 2, the manufacturing process of the spherical touch device includes: the method comprises the steps of firstly arranging a first grid electrode 200 on the outer membrane surface of a heat-shrinkable film layer 100, and/or arranging a second grid electrode 300 on the inner membrane surface of the heat-shrinkable film layer 100, then coating the heat-shrinkable film layer 100 on the outer surface of a spherical support 400, and finally placing the spherical support 400 coated with the heat-shrinkable film layer 100 in a furnace for heating, wherein the heat-shrinkable film can deform and shrink when heated, so that the heat-shrinkable film is tightly attached to the spherical support. The following will also explain a specific method for manufacturing the spherical touch device. It can be understood that after the fabrication of the spherical touch device is completed, the spherical support 400 located at the center thereof may be retained, or the spherical support 400 may be detached and taken away. Therefore, the spherical touch device may or may not include the spherical support 400, which is not limited in the present invention.
Specifically, the spherical touch device may include only a single-layer mesh electrode, or may include a double-layer mesh electrode. When the spherical touch device only comprises a single-layer grid electrode, namely only the outer film surface of the heat-shrinkable film layer 100 is provided with the first grid electrode 200, a single-point capacitive touch screen is formed on the outer surface of the spherical touch device; when the spherical touch device includes a double-layer grid electrode, that is, the outer film surface of the heat-shrinkable film layer 100 is provided with the first grid electrode 200, and the inner film surface is provided with the second grid electrode 300, the spherical touch device forms a multi-point capacitive touch screen, specifically, one of the first grid electrode 200 and the second grid electrode 300 forms a transmitting circuit (Tx circuit), and the other forms a receiving circuit (Rx circuit). It can be understood that the single-point capacitive touch screen can only recognize and support touch and click of one finger at a time, and if more than two points are touched at the same time, the correct reaction cannot be made; the multi-point capacitive touch screen can decompose a task into two aspects of work, wherein firstly, multi-point signals are collected simultaneously, and secondly, the meaning of each path of signal is judged, namely gesture recognition is carried out, so that the screen recognition of clicking and touch actions of five fingers of a person can be realized.
In this embodiment, the grid electrode is formed by first providing a conductive layer on the surface of the heat-shrinkable film layer 100, and then fabricating a grid electrode by a yellow light process, which will be described in detail below.
It should also be noted that the ball touch device may further include a flexible circuit board (FPC)500, and in the ball touch device, the first and/or second grid electrodes 200 and 300 are electrically connected to the flexible circuit board 500. Specifically, the first grid electrode 200 and/or the second grid electrode 300 and the flexible circuit board 500 may be bonded and fixed to the flexible circuit board (FPC)500 by an Anisotropic Conductive Film (ACF).
According to the spherical touch device provided by the technical scheme of the utility model, the heat-shrinkable film layer 100 is attached to the outer surface of the spherical support 400, the first grid electrode 200 is arranged on the outer film surface of the heat-shrinkable film layer 100, and/or the second grid electrode 300 is arranged on the inner film surface of the heat-shrinkable film layer 100. According to the technical scheme, the capacitive touch screen with the multi-dimensional surface modeling can be obtained, so that the purposes and application scenes of the capacitive touch screen are enriched.
Further, the first grid electrode 200 and the second grid electrode 300 are both sputtered layers or evaporated layers, and the sputtered layers or the evaporated layers are coated on the outer surface of the heat-shrinkable film layer 100. Specifically, when the grid electrode is manufactured, firstly, a conducting layer is plated on the outer surface of the heat-shrinkable film layer in a vacuum sputtering or vacuum evaporation mode; and then, patterning the conductive layer by a yellow light process to obtain the grid electrode.
Alternatively, the first grid electrode 200 and the second grid electrode 300 are both metal foil layers or conductive organic layers, and the metal foil layers or the conductive organic layers are adhered to the outer surface of the heat-shrinkable film layer 100. Specifically, when the grid electrode is manufactured, a metal foil layer or a conductive organic matter layer is attached to the outer film surface of the heat-shrinkable film layer in an adhesive mode; and then patterning the metal foil layer or the conductive organic layer by a yellow light process to obtain the grid electrode.
Further, the conductive material of the first grid electrode 200 and/or the second grid electrode 300 is selected from any one or more of copper, nickel, silver, iron, chromium, and organic conductive high molecular polymer (such as poly 3, 4-ethylenedioxythiophene (PEDOT)).
Further, the heat-shrinkable film layer 100 is any one of a Polyethylene (PE) film, an unstretched polypropylene (CPP) film, an aluminum-plated unstretched polypropylene (VMCPP) film, an biaxially oriented polypropylene (OPP) film, a coated biaxially oriented polypropylene (KOP) film, a biaxially oriented polypropylene matting film (MATOPP) film, a double-sided or single-sided heat-seal biaxially oriented Polypropylene (PCO) film, a biaxially oriented Polypropylene (PL) film, a polyester film (PET) film, an aluminum-plated polyester film (VMPET) film, a coated polyester film (KPET) film, a Nylon (NY) film, and the like. It can be understood that the heat-shrinkable film shrinks when exposed to heat, in the technical solution of this embodiment, the heat-shrinkable film layer 100 is heated by utilizing the property of the heat-shrinkable film that shrinks when exposed to heat, so that the heat-shrinkable film layer tightly covers the surface of the spherical support 400, and the grid electrodes disposed on the surface of the heat-shrinkable film layer 100 are deformed therewith, so as to form the multi-dimensional curved capacitive touch screen — spherical touch screen. The heating temperature of the heat shrinkable film can be selected from the glass softening temperature (Tg) of the film material, or the temperature 5-100 ℃ higher than the glass softening temperature (Tg) of the film material as the working temperature, but the working temperature cannot be too high, so that the plasticizer and oligomer in the heat shrinkable film are prevented from being released on the film surface.
Further, the thickness range of the heat-shrinkable film layer 100 is XX-XX μm. It can be understood that the thickness of the heat-shrinkable film layer 100 should not be too thick or too thin, and if the thickness of the heat-shrinkable film layer 100 is too thick, the film is not easily shrunk or deformed by heat; if the thickness of the heat-shrinkable film layer 100 is too thin, it is easily broken during the shrinkage deformation. Optionally, the thickness of the heat-shrinkable film layer 100 is XX μm, or the like.
The thickness range of the first grid electrode 200 is XX-XX mum; the thickness range of the second grid electrode 300 is XX to XX μm. It can be understood that the thickness of the grid electrode is not too thick or too thin, and if the thickness of the grid electrode is too thick, the grid electrode is not easily deformed along with the thermal shrinkage film layer 100, and thus the grid electrode is not easily coated on the outer surface of the spherical support 400; if the thickness of the heat shrinkable film layer 100 is too thin, it is easily damaged in the process of deforming the heat shrinkable film layer 100. Optionally, the thickness of the grid electrode is XX μm, or the like.
In one embodiment, the spherical touch device further includes a spherical support 400, wherein the spherical support 400 is an insulator; specifically, the material of the insulator may be selected from any one or more of glass, plastic, metal oxide, and the like.
In another embodiment, the spherical support 400 includes a conductor and an insulating layer covering an outer layer of the conductor. The conductor can be made of metal, specifically aluminum, iron, copper and other materials; the material of the insulating layer can be selected from glass and plasticAnd metal oxides, and the like. It will be appreciated that in this embodiment, a non-conductive barrier (insulating layer) is applied to the conductors to prevent the conductors from interfering with the signal on the capacitive touch screen on the outer surface of the ball support 400. Preferably, the bulk resistivity of the insulating layer is greater than 102Ω·m。
The manufacturing method of the spherical touch device comprises the following steps:
s1, arranging a first grid electrode on the outer membrane surface of the heat-shrinkable film layer, and/or arranging a second grid electrode on the inner membrane surface of the heat-shrinkable film layer to obtain a conductive heat-shrinkable film layer;
s2, coating the conductive heat-shrinkable film layer on the outer surface of the spherical support;
s3, heating the conductive heat-shrinkable film layer, and attaching the conductive heat-shrinkable film layer to the outer surface of the spherical support.
Further, the step S1 specifically includes the following steps:
s11, plating a first conductive layer on the outer membrane surface of the heat-shrinkable membrane layer in a vacuum sputtering or vacuum evaporation mode, and/or plating a second conductive layer on the inner membrane surface of the heat-shrinkable membrane layer;
s12, patterning the first conductive layer and/or the second conductive layer by a photolithography process to obtain a first grid electrode and/or a second grid electrode.
Specifically, in step S11, the background pressure 10 of the evacuation is set-2～10-8Torr, working pressure 10-1～10- 4And Torr, the plating atmosphere is inert gas such as argon, and the target material is one or more of copper, nickel, silver, iron, chromium and the like.
In step S12, the yellow light process includes the following steps: firstly, an etching barrier layer is arranged on a conductive layer by using the modes of coating a photoresist, attaching a dry film or screen printing etching-proof ink and the like, and then patterning operation is completed through the steps of exposure, development, etching, film removal and the like in sequence, and finally the grid electrode is obtained.
Alternatively, the step S1 specifically includes the following steps:
s11, attaching a first conductive layer to the outer membrane surface of the heat-shrinkable film layer in an adhesive mode, and/or attaching a second conductive layer to the inner membrane surface of the heat-shrinkable film layer;
s12, patterning the first conductive layer and/or the second conductive layer by a photolithography process to obtain a first grid electrode and/or a second grid electrode.
Specifically, in step S11, a conductive layer (e.g., a copper foil, a nickel foil, a silver foil, an iron foil, a chromium foil, an alloy foil, or an organic conductive polymer film) is attached to the heat shrinkable film through a glue layer. Wherein the adhesive coating layer is a mixture of acrylic resin, epoxy-acrylic resin and a thermal initiator, and the acrylic resin and the epoxy-acrylic resin are subjected to a cross-linking reaction by heating the adhesive coating layer, so that the conductive coating layer is adhered to the heat-shrinkable film layer, optionally, the thermal initiator is one or more of an amine adduct, polyamide, polyamino polyamide, hydrazide, dihydrazide, denatured aliphatic amine, denatured cyclic aliphatic amine, denatured aromatic amine and the like; or the coating layer is a mixture of acrylic resin, epoxy-acrylic resin and photoinitiator, and the coating layer is irradiated by light, or the acrylic resin and the epoxy-acrylic resin are subjected to crosslinking reaction, so that the coating layer is adhered to the heat shrinkable film layer, wherein the photoinitiator is 2-hydroxy-2-methyl-1-phenyl-1-acetone, 1-hydroxycyclohexyl phenyl ketone, methyl alpha-oxophenylacetate, 2-dimethoxy-phenyl ethyl ketone, diphenyl (2,4, 6-trimethylbenzoyl) phosphine oxide, bis (eta 5-2, 4-cyclopentadienyl-1-yl) bis [2, 6-difluoro-3- (1H-pyrrole-1-yl) phenyl ] titanium, 4,4' -bis (diethylamino) benzophenone and the like.
In step S12, the yellow light process includes the following steps: firstly, an etching barrier layer is arranged on a conductive layer by using the modes of coating a photoresist, attaching a dry film or screen printing etching-proof ink and the like, and then patterning operation is completed through the steps of exposure, development, etching, film removal and the like in sequence, and finally the grid electrode is obtained.
Further, in the step S3, the range of the temperature T for heating the conductive heat-shrinkable film layer is as follows: t is more than or equal to Tg and less than or equal to Tg +100 ℃, wherein Tg is the glass transition temperature of the heat-shrinkable film. It can be understood that the heating temperature T is not too high or too low, and if the temperature T is less than Tg, the heat-shrinkable film cannot be softened well and is difficult to shrink and deform; if the temperature T is higher than Tg +100 ℃, plasticizer and oligomer in the heat shrinkable film are easily released from the film surface of the heat shrinkable film, and the heat shrinkable film is damaged.
The touch panel of the present invention will be further described with reference to specific embodiments.
Example 1
(1) Plating a conductive layer on the surface of the heat-shrinkable film layer by vacuum sputtering
Plating copper layers on two outer surfaces of a PET heat-shrinkable film with the thickness of 100 mu m by a vacuum sputtering mode to finish the copper plating operation of the heat-shrinkable film, and vacuumizing the vacuum background pressure of 10-6Torr, working pressure 10-3Torr, the target material is pure copper target, and the thickness of the plated copper layer is 0.5-1 μm.
(2) Grid electrode manufactured by yellow light process
And sequentially carrying out steps of dry film pasting, exposure, development, etching, film removing and the like on the two copper layers to complete patterning operation, so as to obtain two metal copper grid electrodes respectively positioned on the two outer surfaces of the PET heat-shrinkable film. And then adhering and fixing the two metal copper grid electrodes with a Flexible Printed Circuit (FPC) by using Anisotropic Conductive Film (ACF).
(3) Manufacturing spherical touch device
And coating the thermal shrinkage film layer attached with the grid electrode on the outer surface of the spherical support, placing the spherical support in a heating furnace for heating, wherein the temperature range is 180-230 ℃, the heating time is 30 seconds, and the thermal shrinkage film layer can be deformed and attached to the spherical support after being heated, so that the spherical touch device is finally manufactured.
Example 2
(1) Adhering the conductive layer to the surface of the heat-shrinkable film layer by gluing
And (3) mixing, defoaming and homogenizing the acrylic resin, the epoxy-acrylic resin and the thermal initiator by using a centrifugal stirring defoaming machine. And then coating the wet glue on a PET heat-shrinkable film with the thickness of 100 mu m by using a scraper coater, pressing the rough surface of the copper foil on the wet glue, and finally baking and heating the wet glue at the heating temperature of 90 ℃ for 30 minutes to finish the copper pasting operation of the heat-shrinkable film.
(2) Grid electrode manufactured by yellow light process
And sequentially carrying out steps of dry film pasting, exposure, development, etching, film removing and the like on the two copper layers to complete patterning operation, so as to obtain two metal copper grid electrodes respectively positioned on the two outer surfaces of the PET heat-shrinkable film. And then adhering and fixing the two metal copper grid electrodes with a Flexible Printed Circuit (FPC) by using Anisotropic Conductive Film (ACF).
(3) Manufacturing spherical touch device
And coating the thermal shrinkage film layer attached with the grid electrode on the outer surface of the spherical support, placing the spherical support in a heating furnace for heating, wherein the temperature range is 180-230 ℃, the heating time is 30 seconds, and the thermal shrinkage film layer can be deformed and attached to the spherical support after being heated, so that the spherical touch device is finally manufactured.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A spherical touch device, comprising:
the heat-shrinkable film layer is attached to the outer surface of the spherical support and is provided with an inner film surface attached to the spherical support and an outer film surface opposite to the inner film surface; and the number of the first and second groups,
the first grid electrode is arranged on the outer membrane surface of the heat-shrinkable film layer, and the second grid electrode is arranged on the inner membrane surface of the heat-shrinkable film layer.
2. The spherical touch device according to claim 1, wherein the first grid electrode and the second grid electrode are both sputtered or evaporated layers, and the sputtered or evaporated layers are coated on an outer surface of the heat-shrinkable film layer.
3. The spherical touch device according to claim 1, wherein the first grid electrode and the second grid electrode are both a metal foil layer or a conductive organic layer, and the metal foil layer or the conductive organic layer is adhered to an outer surface of the heat-shrinkable film layer.
4. The spherical touch device according to claim 1, wherein the conductive material of the first grid electrode and/or the second grid electrode is selected from any one of copper, nickel, silver, iron, chromium, and organic conductive high molecular polymer.
5. The spherical touch device according to claim 1, wherein the heat-shrinkable film layer is any one of a polyethylene film, an unstretched polypropylene film, an aluminum-plated unstretched polypropylene film, a biaxially stretched polypropylene film, a coated biaxially stretched polypropylene film, a biaxially stretched polypropylene matte film, a double-sided or single-sided heat-sealed biaxially stretched polypropylene film, a polyester film, an aluminum-plated polyester film, a coated polyester film, and a nylon film.
6. The spherical touch device according to claim 1, wherein the thickness of the heat-shrinkable film layer is in a range of 9 to 500 μm; the thickness range of the first grid electrode is 0.1-50 mu m; the thickness range of the second grid electrode is 0.1-50 mu m.
7. The spherical touch device according to claim 1, further comprising the spherical support, wherein the spherical support is an insulator; or, the spherical support comprises a conductor and an insulating layer coated on the outer layer of the conductor.
8. The spherical touch device according to claim 7, wherein the insulator is made of a material selected from any one of glass, plastic, and metal oxide; the conductor is made of metal, and the insulating layer is made of any one of glass, plastic and metal oxide.
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| CN112764598A (en) * | 2021-02-23 | 2021-05-07 | 深圳市志凌伟业光电有限公司 | Spherical touch device and manufacturing method thereof |
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| CN112764598A (en) * | 2021-02-23 | 2021-05-07 | 深圳市志凌伟业光电有限公司 | Spherical touch device and manufacturing method thereof |
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