CN203941516U - Electrode structure for touch control - Google Patents

Abstract

The utility model relates to a touch electrode structure, comprising a substrate layer; at least one adhesion layer, forming a circuit pattern arranged on the surface of the substrate layer; a conductive electrode, formed on the surface of the adhesion layer, and forming a conductive circuit corresponding to the circuit pattern; a first blackening layer, formed on the surface of the conductive electrode and made of an easily etchable material; and a weather-resistant layer, formed on the surface of the first blackening layer and made of an etching-resistant material; wherein the thickness of the weather-resistant layer is less than that of the first blackening layer, and the first blackening layer causes light to be absorbed by the first blackening layer and cannot enter the conductive electrode, thereby forming a shielding surface that can prevent a user from directly observing the conductive electrode. Accordingly, the utility model can prevent the human eye from directly observing the existence of the conductive electrode under the touch panel, reduce the severe lateral etching phenomenon of the conductive electrode, and improve the production yield of the conductive electrode product.

Description

Electrode structure for touch control

technical field

The utility model relates to an electrode structure for touch control, especially a conductive electrode made of a blackened layer with an easy-to-etch property and an extremely thin weather-resistant layer, which reduces the light interference caused by the wires of the conductive electrode. Streak phenomenon increases the user's comfort when viewing the product, and at the same time greatly reduces the occurrence of serious side erosion, thereby achieving a stable wire diameter of the conductive electrode, or a structure that provides complete coating protection on the surface of the conductive electrode, improving Production yield and durability of conductive electrode lines.

Background technique

With the development of electronic information products in the direction of thinner, lighter and smaller, the semiconductor manufacturing method is also moving towards the direction of high-density and automatic production. Or the size of the touch panel product gradually increases from small to large, and the material of the conductive electrode is changed from the commonly used indium tin oxide (ITO) to a metal conductive electrode.

In fact, the structure and manufacturing process of the general conductive electrode are shown in FIG. 1 and FIG. 2. Usually, the step (1) attaches the conductive electrode 10 to the substrate 12 through at least one adhesion layer 11 (also called an adhesive layer), To make the conductive electrode 10 not easy to fall off from the substrate, step (2) and then at least one weather-resistant layer 13 (corrosion layer) is coated on the conductive electrode 10, and step (3) is then used for etching with an etching liquid (wet etching) Become the conductive electrode 10 electrode line 14, just complete the manufacture of the preliminary metal electrode line 14, in addition, after the final sensing electrode (Sensor) product is completed, please refer to FIG. The film (OCA) 16 covers the entire surface of the metallic electrode lines 14 as a protective effect.

And the conductive electrode 10 is designed in order to make the conductive electrode 10 constituting the panel base not be clearly aware of its existence by the user with the eyes, that is to say, to prevent the conductive electrode 10 from being recognized by the user, so that the current industry in this industry The researchers aim to make the wire width of the conductive electrode 10 extremely thin.

To further illustrate, the electrode line 14 structure of the known sensing electrode (Sensor) is protected by a weather-resistant layer 13 with an etching resistance property, which can be used as the conductive electrode 10 part of the conduction. When performing an etching process, wet etching It is isotropic (Isotropic), and because the weather-resistant layer 13 is an etching-resistant material, the etching rate difference between the weather-resistant layer 13 and the conductive electrode 10 for the etching liquid is very large, and, for step (2) The distribution of the formed weather-resistant layer 13 is generally in a non-uniform thickness state. Therefore, when the etching solution performs vertical etching, the conductive electrode 10 may be subjected to lateral etching phenomenon 15 during the etching process.

Please refer to FIG. 1 again. In other words, it is the left and right sides of the conductive electrode 10, especially the wire diameter of the conductive electrode 10 whose width is designed to be less than 5 μm and whose thickness is designed to be greater than 0.3 μm. Etching phenomenon 15 causes the total area ratio of the conductive electrode 10 to be etched to be too large, and the impedance value of the wire diameter of the conductive electrode 10 and the electrode line 14 caused by the uneven etching is too large, and what is more, the conductive electrode 10 and the electrode line 14 are broken. As a result, the yield and quality of the conductive electrodes 10 produced by the manufacturers are difficult to control, which is actually a hot fundamental problem in the development and manufacture of the ultra-fine conductive electrodes 10 at present.

In addition, please refer to FIG. 3 , the adhesion layer 11 is designed as two layers, namely an intermediary layer 110 combined with the substrate 12 and a conductive base layer 111 combined with the conductive electrode 10 .

Furthermore, further speaking, it is known that the conductive electrodes 10, the electrode lines 14, which have been widely used in the industry, have a very thin wire diameter width. If no further protection measures are designed, the long-term use of the user will add to Due to environmental oxidation, the conductive electrodes 10 and electrode circuits 14 may no longer be able to achieve the original predetermined performance, which may shorten the service life of the product and affect the quality of the final touch panel product produced by the manufacturer and the environmental durability. performance etc.

Based on the deficiency of the conductive electrode 10 for the touch panel to be improved in the foregoing description, the utility model aims to prevent the existence of the conductive electrode 10 from being clearly noticed by the user with the eyes, and to improve the side erosion phenomenon of the conductive electrode 10 15. The problems caused by the conventional conductive electrode 10 with different wire diameters and the final product yield of the conductive electrode 10 are actually the purpose of the design of the present invention.

Utility model content

The first main purpose of the present utility model is to provide a structural design of the conductive electrode with at least one blackened layer that is easy to etch, and to reduce the serious lateral etching phenomenon of the conductive electrode when the conductive electrode is made by etching technology , improve the production yield of conductive electrode products, ensure that the wire diameter can be designed as an extremely thin wire diameter according to the predetermined design, increase the light penetration rate of the touch panel light source and improve the color saturation.

The second main purpose of the utility model is to further significantly reduce the oxidation process of the conductive electrodes in the air for a long time when the conductive electrodes are in the air for a long time by carrying out a complete weather-resistant layer coating protection design on the conductive electrodes forming the circuit pattern. Enhance the corrosion resistance of conductive electrodes and prolong the service life of conductive electrodes for touch control.

Another purpose of the present utility model is to reduce the thickness of the weather-resistant layer, and make the thickness of the weather-resistant layer relatively thin or extremely thin compared to the conventional ones, and reduce the thickness of the weather-resistant layer and the blackened layer that is easy to etch. Severe lateral etching of conductive electrodes improves the production yield of conductive electrode products and ensures the width of the wire diameter.

Another object of the present invention is that the conductive electrode has at least one blackened layer structure design, which can prevent the human eyes from directly seeing the existence of the conductive electrodes under the touch panel, and also prevent the human eyes from seeing the interface surface of the touch panel. The generation of interference fringes (Moire) and the reduction of color cast can provide users with a comfortable human-eye-visible touch operation interface.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

An electrode structure for touch control, characterized in that it comprises:

a substrate layer;

at least one adhesion layer, forming a circuit pattern arranged on the surface of the base material layer;

A conductive electrode is formed on the surface of the adhesion layer, and forms a conductive circuit corresponding to the circuit pattern;

a first blackening layer, corresponding to the circuit pattern and formed on the surface of the conductive electrode, and made of an easy-to-etch material; and

A weather-resistant layer formed on the surface of the first blackened layer and made of an etching-resistant material;

Wherein, the thickness of the weather-resistant layer is smaller than that of the first blackened layer, and the first blackened layer is made of a material with a dark color, so that light is absorbed by the first blackened layer and cannot enter the The conductive electrode forms a shielding surface that can prevent the user from directly viewing the conductive electrode.

In the electrode structure for touch control, the weather-resistant layer is further made of a dark material to form a shielding surface that can prevent users from directly viewing the conductive electrodes.

In the electrode structure for touch control, the adhesion layer includes an intermediary layer located on the surface of the substrate layer, a conductive base layer formed on the surface of the intermediary layer, and an anti-oxidation layer located on the surface of the conductive base layer. layer.

In the electrode structure for touch control, the adhesion layer includes a second blackened layer on the surface of the base material layer, an intermediary layer formed on the surface of the second blackened layer, and an intermediary layer formed on the surface of the second blackened layer. Conductive base layer on the surface of the interposer.

In the electrode structure for touch control, the adhesion layer includes a second blackened layer formed on the surface of the base material layer, an intermediary layer formed on the surface of the second blackened layer, and an intermediary layer formed on the surface of the second blackened layer. A conductive base layer on the surface of the intermediary layer and an anti-oxidation layer on the surface of the conductive base layer.

For realizing above-mentioned object, the technical scheme that the utility model adopts is:

An electrode structure for touch control, characterized in that it comprises:

a substrate layer;

at least one adhesion layer, forming a circuit pattern arranged on the surface of the base material layer;

a conductive electrode connected to the surface of the adhesion layer and forming a conductive circuit corresponding to the circuit pattern; and

A weather-resistant layer is connected and coated on the outer peripheral surface of the conductive electrode, so as to isolate and seal the conductive circuit from the outside.

In the electrode structure for touch control, the weather-resistant layer includes a first weather-resistant layer and a second weather-resistant layer, which are formed on the upper surface of the circuit pattern of the conductive electrode, and the second weather-resistant layer is further coated on The outer peripheral surface of the circuit pattern of the conductive electrode is connected to the outer peripheral surface of the circuit pattern covered by the adhesion layer.

In the electrode structure for touch control, the adhesion layer includes an intermediary layer located on the surface of the substrate layer, a conductive base layer formed on the surface of the intermediary layer, and an anti-oxidation layer located on the surface of the conductive base layer. layer.

In the electrode structure for touch control, the adhesion layer includes a second blackened layer formed on the surface of the base material layer, an intermediary layer formed on the surface of the second blackened layer, and an intermediary layer formed on the surface of the second blackened layer. Conductive base layer on the surface of the interposer.

In the electrode structure for touch control, the adhesion layer includes a second blackened layer formed on the surface of the base material layer, an intermediary layer formed on the surface of the second blackened layer, and an intermediary layer formed on the surface of the second blackened layer. A conductive base layer on the surface of the intermediary layer and an anti-oxidation layer on the surface of the conductive base layer.

In the electrode structure for touch control, the conductive electrode further includes a protective film layer in a transparent state, and the protective film layer is arranged on the outer peripheral surface of the base material layer and the weather-resistant layer.

In the electrode structure for touch control, the weather-resistant layer presents a ㄇ-shaped structure.

Wherein, in order to reduce the thickness of the weather-resistant layer to become extremely thin in design, so as to reduce the side erosion phenomenon of etching, the thickness of the weather-resistant layer of the present invention is smaller than the first blackened layer, that is to say, the The thickness of the weather-resistant layer can be designed to be relatively smaller or extremely smaller than the thickness of the first blackened layer, and the thickness of the first blackened layer is the same as the known thickness.

Moreover, the first blackened layer is made of a material with a dark color, so that light reflection, refraction and color shift will not occur on the surface of the weather-resistant layer and the surface of the first blackened layer, At the same time, the light is absorbed by the first blackened layer and cannot enter the conductive electrode, forming a shielding surface that can prevent the user from directly observing the conductive electrode.

As can be seen from the foregoing description, the utility model is characterized in that the thickness of the weather-resistant layer is designed to be relatively smaller than or relatively extremely smaller than the thickness of the first blackened layer; moreover, through the first blackened layer and the dark color ( The design of the weather-resistant layer of blackening properties) completely shields the conductive lines, greatly reduces the phenomenon of interference fringes on the surface of conductive electrodes, thereby completing a touch operation interface that can be comfortably visualized by human eyes; in addition, using At least one blackened layer structure with a dark color is designed in the weather-resistant layer and the adhesion layer to cooperate with the weather-resistant layer designed to be extremely thin, so as to reduce the serious side erosion of the conductive electrode during the etching process.

Description of drawings

Fig. 1 is the manufacturing method flowchart of conventional conductive electrode;

Fig. 2 is a schematic structural view of a conventional conductive electrode covered with a protective film layer;

Fig. 3 is the structural representation of conventional adhesion layer;

4A and 4B are flow charts of the manufacturing method of the touch electrode structure of the present invention;

Fig. 5 is a structural schematic diagram of the first embodiment of the electrode structure for touch control of the present invention

Fig. 6 is a schematic diagram of the structure of Fig. 5 covered with a protective film layer;

Fig. 7 is a schematic structural view of the first preferred embodiment of the adhesion layer of the present invention;

Fig. 8 is a schematic structural view of a second preferred embodiment of the adhesion layer of the present invention;

Fig. 9 is a schematic structural view of a third preferred embodiment of the adhesion layer of the present invention;

10 is a structural schematic diagram of the second embodiment of the electrode structure for touch control of the present invention;

Fig. 11 is a schematic structural view of Fig. 10 covered with a protective film layer;

FIG. 12 is a structural schematic diagram of a third embodiment of the electrode structure for touch control of the present invention;

Fig. 13 is a schematic structural view of Fig. 12 covered with a protective film layer;

FIG. 14 is a structural schematic diagram of a fourth embodiment of the electrode structure for touch control of the present invention;

FIG. 15 is a schematic diagram of the structure of FIG. 14 covered with a protective film layer.

Description of reference signs: 10---conductive electrode; 11---adhesion layer; 110---intermediate layer; 111---conductive base layer; 12---substrate; 13---weather-resistant layer; 14- --Electrode circuit; 15---Side erosion phenomenon; 16---Protective film; 2---Substrate layer; 3---Adhesion layer; 30---Second blackened layer; 31--- Intermediary layer; 32---conductive base layer; 33---anti-oxidation layer; 4---conductive electrode layer clip; 41---upper surface; 42---outer peripheral surface; 5---first black Chemical layer; 50---shielding surface; 6---weather-resistant layer; 60---first weather-resistant layer; 61---second weather-resistant layer; 7---shielding layer; 8---protective film layer .

Detailed ways

In order to further have a clear and detailed understanding and understanding of the structure, use and features of the present utility model, a preferred embodiment is proposed, and the details are as follows in conjunction with the illustrations:

Please refer to FIG. 4A to FIG. 4B , the electrode structure for touch control of the present invention is in a preferred embodiment, and the manufacturing steps are described as follows:

(A) select a preset base material, form a base material layer 2 by the base material, the base material layer 2 can be made of soft material or glass plate, and the soft material is made of poly Polyethylene terephthalate (PET), polymethyl methacrylate (PMMA), polycarbonate (PC), polyphenylene sulfone resin (PPSU), polyethyleneimine (PEI) or polyamide One kind of imine (PI);

(B) At least one conductive adhesion layer 3 is formed on the surface of the base material layer 2, wherein the thickness of the adhesion layer 3 is between 0.01 μm and 1 μm. In addition, the adhesion layer 3 can be selected from Vacuum sputtering, electroless plating or polymer coating or a combination thereof, and the adhesion layer 3 is made of metal, metal oxide, polymer material or one of its composite materials .

Wherein, the metal of the adhesion layer 3 is selected from tungsten (W), nickel (Ni), chromium (Cr), copper (Cu), vanadium (V), molybdenum (Mo), tin (Sn), Zinc (Zn), cobalt (Co), iron (Fe), titanium (Ti), aluminum (Al), niobium (Nb) or one of their alloys, the metal oxide of the adhesion layer 3 They are made of tungsten (W), nickel (Ni), chromium (Cr), copper (Cu), vanadium (V), molybdenum (Mo), tin (Sn), zinc (Zn), cobalt (Co), iron ( It is made by oxidation of one of Fe), titanium (Ti), aluminum (Al), niobium (Nb) or their alloys.

Please refer to FIG. 4A to FIG. 4B again, following the step (B), (C) form a conductive electrode 4 with conductivity on the surface of the adhesion layer 3, wherein the conductive electrode 4 can be selected from Vacuum sputtering, vapor deposition, electroless plating, electroplating or conductive polymer coating one of them or a combination of the process, the conductive electrode 4 is made of gold (Au), copper (Cu), silver (Ag), Zinc (Zn), aluminum (Al), nickel (Ni), tin (Sn) and other metals, or their alloys, or made of one of the conductive polymer materials;

(D) forming a first blackened layer 5 on the surface of the conductive electrode 4, the first blackened layer 5 is made of a material that is easily etched by an etching liquid, and the first blackened layer 5 is formed of a material that is easily etched by an etching liquid. The blackening layer 5 is to arrange the metal oxide material or polymer material with a dark color on the surface of the conductive electrode 4 by electroplating or sputtering, or to chemically remove a material that does not have a dark color originally. In this way, it is subjected to a dyeing procedure to transform into the first blackened layer 5 with a dark color.

The dark color of the first blackened layer 5 can be set to a relatively dark color such as blue, green, purple, brown or black, which will absorb the light that touches the touch panel, and has It is helpful to absorb reflected light or refracted light on the product, so that light hardly enters the conductive electrode 4 located at the lower layer of the first blackened layer 5, and therefore, effectively reduces the interference fringe phenomenon (moire) occurs, causing the conductive electrode 4 to be difficult to be clearly noticed by the eyes of the product user, and can achieve a comfortable effect that the user sees the product surface with the eyes.

(E) Form a weather-resistant layer 6 on the surface of the first blackened layer 5, the weather-resistant layer 6 is made of an etching-resistant material, wherein the weather-resistant layer 6 can be selected from electroless plating, electroplating Or it is conductive polymer coating one of them or a combination thereof, and the weather-resistant layer 6 is made of graphite (graphite), metal, metal oxide, conductive polymer material or one of its composite materials made by.

The metal of the weather-resistant layer 6 is selected from tungsten (W), nickel (Ni), chromium (Cr), copper (Cu), aluminum (Al), silver (Ag), titanium (Ti), molybdenum ( Mo), tin (Sn), zinc (Zn), cobalt (Co), iron (Fe), niobium (Nb) or one of their alloys, the metal oxides of the weather-resistant layer 6 are respectively Made of tungsten (W), nickel (Ni), chromium (Cr), copper (Cu), aluminum (Al), silver (Ag), titanium (Ti), molybdenum (Mo), tin (Sn), zinc (Zn) , cobalt (Co), iron (Fe), niobium (Nb) or one of their alloys is oxidized.

Moreover, the weather-resistant layer 6 can be further designed to have a dark color, in other words, the thickness of both the first blackened layer 5 and the weather-resistant layer 6 is jointly strengthened to form a structure that can prevent the user from directly Observing the shielding surface 50 of the conductive electrode 4 effectively reduces the occurrence of interference fringe phenomenon (moire), and provides a comfortable effect when the user sees the surface of the product with the eyes. Further explanation, due to the first The blackened layer 5 has a blackened property with a dark color, therefore, the relative thickness of the weather-resistant layer 6 relative to the conventional weather-resistant layer 13 and the first blackened layer 5 of the present invention can be designed to be thinner or extremely thin In the utility model, the thickness of the first blackened layer 5 is the same as the thickness of the conventional thick-resistant layer 13, which is between 0.01 μm and 1 μm, and the thickness of the weather-resistant layer 6 is compared with the conventional weather-resistant layer 6. The thickness of layer 13 is designed to be lighter and thinner.

(F) first laying the shielding layer 7 with a predetermined circuit pattern on the surface of the weather-resistant layer 6, and then performing a wet etching process with an etching liquid to form a continuous or discontinuous grid-shaped circuit pattern, After the shielding layer 7 is released and removed, please refer to FIG. 5 to form a preliminary product form of the electrode structure for touch control.

The steps (A) to (F) can produce the conductive electrode 4 with conductive lines on one side, but if it is necessary to produce the conductive electrode 4 with two sides or multiple sides, the above steps can be repeated many times. Steps (A)-(F), to design the manufacturing steps of repetitive changes according to different product requirements.

Furthermore, the utility model designs the first blackened layer 5 and the conductive electrode 4 to have the same etching rate, so that the conductive electrode 4 can be reduced to be etched laterally when the etching process is carried out. Therefore, the known side erosion phenomenon 15 is greatly reduced. Therefore, the structure of the utility model can improve the severe side etching phenomenon that will inevitably occur in the known etching process, and can maintain and ensure the touch control of the utility model. The wire diameter width of the conductive circuit of the electrode structure can also greatly improve the product yield of the electrode structure for touch control.

Since the first blackened layer 5 and the weather-resistant layer 6 are respectively made of an easy-to-etch material and a relatively etch-resistant material, in order to make both of them have the same etching rate when the etching process is carried out, the The thickness design of the weather-resistant layer 6 must be smaller or extremely smaller than the thickness of the first blackened layer 5 .

Please refer to Fig. 6, further add a step (F) after the utility model is sent to other destinations for other continuous processing procedures, a transparent protective film layer can be applied by coating or direct film sticking 8 (Optically clear adhesive) is completely covered and sealed on the conductive electrode 4 and the substrate layer 2 to protect the product structure, wherein the protective adhesive film layer 8 is made of (poly) oxide resin (Silicone) Or it is made of one of acrylic resins (Acrylic).

With respect to the design of the protective adhesive film layer 8 of the present invention, the structure of the electrode for touch control is completely covered in the protective adhesive film layer 8, and the protective adhesive film layer 8 is opposite to the substrate layer. 2. A nearly flat surface pattern is formed without leaving gaps between the electrode structures for touch control with circuit patterns.

Furthermore, when the touch electrode structure product of the present invention is actually manufactured, if viewed from a top view, the conductive electrodes 4 correspond to the circuit patterns to form a grid-like conductive circuit. .

In addition, please refer to FIG. 7 , further speaking, compared to the conventional adhesion layer 11 which is composed of two layers, in the first preferred embodiment of the present invention, the adhesion layer 3 can be sputtered It is respectively made up of three layers of an intermediary layer 31, a conductive base layer 32 and an anti-oxidation layer 33 in sequence. An intermediary layer 31 is formed on the surface of the substrate layer 2 first, and an intermediary layer 31 is formed on the surface of the intermediary layer 31. A conductive base layer 32 is formed on the surface and an anti-oxidation layer 33 is formed on the surface of the conductive base layer 32 .

Please refer to FIG. 8, in the second preferred embodiment, the adhesion layer 3 can be composed of a second blackened layer 30, an intermediary layer 31 and a conductive base layer 32 in sequence by a sputtering process. Layers are made together, a second blackened layer 30 is formed on the surface of the base material layer 2, an intermediary layer 31 is formed on the surface of the second blackened layer 30, and an intermediary layer 31 is formed on the surface of the intermediary layer 31. Conductive base layer 32 .

Please refer to FIG. 9, in a third preferred embodiment, the adhesion layer 3 can be sequentially composed of a second blackened layer 30, an intermediary layer 31, a conductive base layer 32 and a sputtering process respectively. A total of four layers of an anti-oxidation layer 33 are made together, and a second blackened layer 30 is formed on the surface of the base material layer 2, and then an intermediary layer 31 is formed on the surface of the second blackened layer 30. A conductive base layer 32 is formed on the surface of the intermediary layer 31 and an anti-oxidation layer 33 is formed on the surface of the conductive base layer 32 .

Since the adhesion layer 3 in the second and third preferred embodiments has a second blackened layer 30 towards the direction of the substrate layer 2, the second blackened layer 30 has The conductive metal oxide or metal compound with anti-corrosion properties is made, and the thickness of the second blackened layer 30 is within the range of 5 nm˜0.1 μm.

In other words, because the material characteristic of the second blackening layer 30 is a relatively dark color such as blue, green, purple, brown or black, it is helpful to absorb reflected light or refracted light on the product. Light, therefore, indirectly causes the touch electrode structure of the present invention to be difficult to be clearly noticed by product users, effectively reducing the occurrence of interference fringes (moire), and providing a comfortable effect when users see the product surface with their eyes.

The intermediary layer 31 (also called Tie-coat) is used to combine the second blackened layer 30 and the conductive base layer 32, and the conductive base layer 32 (also called Seedlayer) has easy oxidation properties, Utilize following three methods to avoid the oxidation situation of described conductive base layer 32 to take place conventionally:

Method (1) remove the oxidized conductive base layer 32 with an acidic solution, method (2) temporarily freeze-dry or store at low temperature and low humidity and use the conductive base layer 32 within 12 to 24 hours, method (3) store in a vacuum And use the conductive base layer 32 within three to six months. However, the present invention is designed to form an anti-oxidation layer 33 on the surface of the conductive base layer 32 to avoid oxidation of the conductive base layer 32 .

Furthermore, the thickness of the adhesion layer 3 of the present invention is set to be between 0.01 μm to 1 μm; and the thickness of the conductive electrode 4 is set to be between 0.1 μm to 6 μm; the first blackening The thickness of the layer 5 is set within the range of 0.01 μm˜1 μm; and the thickness of the weather-resistant layer 6 is set within the range of 2 nm˜50 nm.

Accordingly, compared to the structure of the conventional conductive electrode 10 shown in FIG. 5 and a second blackened layer 30 is designed in the adhesion layer 3, the position of the first blackened layer 5 located on the first surface of the base material layer 2 and the position of the second blackened layer located on the second surface of the base material layer 2 The positions of the second blackened layer 30 are staggered, and the staggered design of this structure cooperates with the two blackened layers 5 and 30, so that when the user's eyes focus on the touch electrode structure of the present invention, the human eye first sees See the first blackened layer 5 on the first surface, and when the human eye sees the gap between the first blackened layer 5 and the first blackened layer 5, light enters the substrate layer 2 and then reach the second blackened layer 30 on the second surface.

Therefore, compared with the conventional structure where human eyes see the gap between the conductive electrodes 10 and the conductive electrodes 10, the conventional structure allows the human eyes to directly and clearly perceive the conductive electrodes 10 on the second surface. The structure design of the electrode for touch control of the utility model can prevent the conductive electrode 4 on the second surface from being seen by human eyes, forming a complete shielding effect, and the weather-resistant layer 6 can also be further designed to have a dark color Blackening properties, therefore, the present invention further strengthens and improves the effect of preventing the user's eyes from seeing the interference fringe phenomenon (Moire) on the interface surface of the touch panel and observing the conductive electrode 4 below the interface of the touch panel.

Please refer to FIG. 10 to FIG. 15, which are the second, third and fourth preferred embodiments of the touch electrode structure of the present invention made by another manufacturing method (not shown) described below, And in the second, third and fourth preferred embodiments, mainly include: a substrate layer 2, at least one adhesion layer 3, a conductive electrode 4, at least one weather-resistant layer 6 and other four parts, step (A), (B) and (C) are the same as the above-mentioned manufacturing methods, and will not be repeated here.

In the second, third and fourth preferred embodiments in which the electrode structure for touch control of the present utility model is made by this method, the structure of the adhesion layer 3 can also be designed in the same way as the aforementioned first preferred embodiment. It is a three-layer or four-layer state, so I won't repeat it here.

Continuing the process, step (D) performs a wet etching process with an etching liquid to form a continuous or discontinuous grid-shaped circuit pattern. Compared with the manufacturing method used in the aforementioned first preferred embodiment, there is no In the case of the protection of the weather-resistant layer 6, the circuit pattern etching process is performed first.

As further explained, since there is no protection of the weather-resistant layer 6, the rate at which the conductive electrode 4 is etched becomes consistent, and at the moment of the etching procedure, the undercut phenomenon 15 hardly occurs, forming an etched wire diameter results of uniform width;

Step (E) Please refer to FIG. 10 again. In the second preferred embodiment of the present invention, a ㄇ shape is formed on the outer peripheral surface 61 of each conductive structure for touch control and the surface of the adhesion layer 3 The weather-resistant layer 6 is in a state, and the weather-resistant layer 6 isolates and seals the conductive electrode 4 having a circuit pattern from the outside, wherein the weather-resistant layer 6 can be selected from electroless plating, electroplating or conductive polymer coating. one of them or a combination thereof, and the weather-resistant layer 6 is made of carbon (C), graphite (graphite), metal, metal oxide, conductive polymer material or one of its composite materials. production. The weather-resistant layer 6 can also be set to have a blackening property of a darker color with both protection and shielding functions.

The preliminary product of the electrode structure for touch control of the present invention is jointly formed by the steps (A), (B), (C), (D), and (E), and the width of each electrode structure for touch control is It can be precisely adjusted to between 0.1 μm and 10 μm.

Wherein, the metal of the weather-resistant layer 6 is selected from tungsten (W), nickel (Ni), chromium (Cr), copper (Cu), aluminum (Al), silver (Ag), titanium (Ti), Molybdenum (Mo), tin (Sn), zinc (Zn), cobalt (Co), iron (Fe), niobium (Nb) or one of their alloys, the metal oxide of the weather-resistant layer 6 They are made of tungsten (W), nickel (Ni), chromium (Cr), copper (Cu), aluminum (Al), silver (Ag), titanium (Ti), molybdenum (Mo), tin (Sn), zinc ( It is made by oxidation of one of Zn), cobalt (Co), iron (Fe), niobium (Nb) or their alloys.

Furthermore, the weather-resistant layer 6 can be set to have a blackening property with a darker color. Therefore, indirectly, the structure of each touch electrode is not easily noticed by product users, effectively reducing interference fringes. The occurrence of the phenomenon (moire) provides a comfortable effect when the user sees the surface of the product with his eyes.

Step (F) After the utility model is delivered to other destinations for other subsequent processing procedures, a transparent protective adhesive film layer 8 (Optically clearadhesive) can be completely covered and sealed on the place by coating or direct film sticking. The electrode structure for touch control is described as a step to protect the structure of the utility model.

That is to say, the electrode structure for touch control of the present utility model can prevent the user from using the electrode structure covered by the protective film layer 8 for a long time under the long-term use of water vapor in the air. Oxidation process occurs, the utility model can achieve the purpose of enhancing the oxidation resistance of the electrode structure for touch control and prolonging the service life of the electrode structure for touch control.

Wherein, the protective film layer 8 is made of (poly)oxidized resin (Silicone) or acrylic resin (Acrylic). Moreover, the electrode structure for touch control of the present invention can reliably prevent the user from using it for a long time, and the electrode structure for touch control that is covered by the protective film layer 8 is exposed to moisture in the air for a long time. Oxidation process, the utility model can achieve the purpose of enhancing the oxidation resistance of the electrode structure for touch control and prolonging the service life of the electrode structure for touch control

With respect to the design of the protective adhesive film layer 8 of the present invention, the structure of the electrode for touch control is completely covered in the protective adhesive film layer 8, and the protective adhesive film layer 8 is opposite to the substrate layer. 2 to form a nearly flat surface pattern without leaving gaps between each of the electrode structures for touch control having circuit patterns.

The electrode circuit 14 of the present utility model can be designed and constructed on one side (single side) of the base material layer 2 (not shown), or on both sides of the base material layer 2, or even on the upper base Multiple surfaces of material layer 2.

When actually manufacturing the touch electrode structure product of the present invention, the width of each touch electrode structure is between 0.1 μm and 10 μm, and, if viewed from a top view, the conductive electrode 4 Corresponding to the circuit pattern, a conductive circuit with a grid-like structure is formed. If viewed in cross-sectional view, a weather-resistant layer 6 is connected to the outer peripheral surface of the conductive electrode 4 and presents a ㄇ-shaped structure, and a transparent The protective adhesive film layer 8 in this form is coated or pasted on the outer peripheral surfaces of the base material layer 2 and the weather-resistant layer 6 .

Or in the third preferred embodiment, the step (E) please refer to FIG. 12 again, and a weather-resistant layer with a ㄇ-shaped structure is only formed on the entire outer peripheral surface 42 of each conductive electrode 4. 6;

In the fourth preferred embodiment, please refer to FIG. 14 again. Compared with the third preferred embodiment in terms of structure, an upper surface of the conductive electrode 4 is first formed on the conductive electrode 4. The first weather-resistant layer 60 of 41, with the second weather-resistant layer 61 formed on the outer peripheral surface 42 of the conductive electrode 4, the second weather-resistant layer 61 is extended and connected to the adhesive layer 3. Therefore, the first and second weather-resistant layers 60, 61 cooperate with the adhesion layer 3 to jointly isolate and seal each conductive circuit from the outside, and finally the first and second weather-resistant layers 60, 61 work together It presents a ㄇ font structure;

In addition, it is also possible to design a fifth preferred embodiment (not shown in the figure), in the fourth preferred implementation, only on the outer peripheral surface 42 of the conductive electrode 4 that already has the first weather-resistant layer 60 A second weather-resistant layer 61 is formed, and finally the first weather-resistant layer 60 and the second weather-resistant layer 61 jointly present a ㄇ-shaped structure.

Furthermore, the thickness of the adhesion layer 3 of the present invention is set to be within the range of 0.01 μm to 1 μm; and the thickness of the conductive electrode 4 is set to be within the range of 0.1 μm to 6 μm; and, the weather-resistant layer The thickness of 6 is set within the range of 0.01 μm to 1 μm.

Accordingly, compared to the structure of the conventional conductive electrode 10 shown in FIG. The position distribution of the second weather-resistant layer 61 is designed to completely cover the conductive electrodes 4 in the weather-resistant layer 6. For high temperature, high humidity or low temperature environments, the product of the present utility model has a very high performance. It has excellent environmental weather resistance and high yield rate, and also has stable benefits for the capacitive sensitivity of the touch sensing (Sensor) for products with a thinner width touch electrode structure.

The above description is only illustrative, rather than restrictive, of the present utility model. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined in the claims. But all will fall within the protection scope of the present utility model.

Claims (12)

1. An electrode structure for touch control, characterized in that it comprises: a substrate layer; at least one adhesion layer, forming a circuit pattern arranged on the surface of the base material layer; A conductive electrode is formed on the surface of the adhesion layer, and forms a conductive circuit corresponding to the circuit pattern; a first blackening layer, corresponding to the circuit pattern and formed on the surface of the conductive electrode, and made of an easy-to-etch material; and A weather-resistant layer formed on the surface of the first blackened layer and made of an etching-resistant material; Wherein, the thickness of the weather-resistant layer is smaller than that of the first blackened layer, and the first blackened layer is made of a dark material. 2 . The electrode structure for touch control according to claim 1 , wherein the weather-resistant layer is further made of a dark material. 3 . 3. The electrode structure for touch control according to claim 1, wherein the adhesion layer comprises an intermediary layer located on the surface of the substrate layer, a conductive base layer formed on the surface of the intermediary layer, and a An anti-oxidation layer located on the surface of the conductive base layer. 4. The electrode structure for touch control according to claim 1, wherein the adhesion layer comprises a second blackened layer located on the surface of the base material layer, a second blackened layer formed on the surface of the second blackened layer The intermediate layer, and a conductive base layer formed on the surface of the intermediate layer. 5. The electrode structure for touch control according to claim 1, wherein the adhesion layer comprises a second blackened layer formed on the surface of the base material layer, a second blackened layer formed on the second blackened layer The intermediate layer on the surface, a conductive base layer formed on the surface of the intermediate layer, and an anti-oxidation layer on the surface of the conductive base layer. 6. An electrode structure for touch control, characterized in that it comprises: a substrate layer; at least one adhesion layer, forming a circuit pattern arranged on the surface of the base material layer; a conductive electrode connected to the surface of the adhesion layer and forming a conductive circuit corresponding to the circuit pattern; and A weather-resistant layer is connected and coated on the outer peripheral surface of the conductive electrode, so as to isolate and seal the conductive circuit from the outside. 7. The electrode structure for touch control according to claim 6, wherein the weather-resistant layer comprises a first weather-resistant layer and a second weather-resistant layer, the upper surface of the circuit pattern formed on the conductive electrode, The second weather-resistant layer is further coated on the outer peripheral surface of the circuit pattern of the conductive electrode and connected to the outer peripheral surface of the circuit pattern coated on the adhesion layer. 8. The electrode structure for touch control according to claim 6, wherein the adhesion layer comprises an intermediary layer located on the surface of the substrate layer, a conductive base layer formed on the surface of the intermediary layer, and a An anti-oxidation layer located on the surface of the conductive base layer. 9. The electrode structure for touch control according to claim 6, wherein the adhesion layer comprises a second blackened layer formed on the surface of the base material layer, a second blackened layer formed on the second blackened layer The intermediate layer on the surface and a conductive base layer formed on the surface of the intermediate layer. 10. The electrode structure for touch control according to claim 6, wherein the adhesion layer comprises a second blackened layer formed on the surface of the base material layer, a second blackened layer formed on the second blackened layer The intermediate layer on the surface, a conductive base layer formed on the surface of the intermediate layer, and an anti-oxidation layer on the surface of the conductive base layer. 11. The electrode structure for touch control according to claim 6, characterized in that: the conductive electrode further comprises a protective film layer in a transparent state, the protective film layer is arranged on the base material layer and The outer peripheral surface of the weather-resistant layer. 12 . The electrode structure for touch control according to claim 6 , wherein the weather-resistant layer presents a ㄇ-shaped structure. 13 .