Patent Publication Number: US-2016229154-A1

Title: Touch-sensitive panel device and electrode structure therein

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a Divisional application of U.S. patent application Ser. No. 14/191,633, filed on 27 Feb. 2014, and entitled TOUCH-SENSITIVE PANEL DEVICE AND ELECTRODE STRUCTURE THEREIN. 
    
    
     BACKGROUND 
     1. Technical Field 
     The present invention generally relates to a touch-sensitive panel device and its electrode structure, and more particularly, to the electrode structure with anti-reflective function and the panel formed by the electrode structure. 
     2. Description of Related Art 
     Regarding the touch panel adopting electrode lines forming a metal mesh in the conventional technology, an extra anti-glare film should be incorporated for eliminating the metal reflective lights formed from the panel, which may result in poor display quality. 
     However, using conventional anti-glare film may thicken the touch-sensitive panel and then affect transmittance of the light-transmitting area. In the meantime, the optical plastic substrate itself may also cause reflective lights which may make visual fatigue to the human eyes. With worse reflective interferences caused by above mentioned situation, the metal lines would be much easier to be seen by naked eyes. 
       FIG. 1  schematically shows a cross-sectional structure of the electrode formed on the substrate of touch panel according to the conventional technology. 
     The touch-sensitive panel includes a substrate  10  with the top and bottom electrode structures  101  and  102 . When fabricating the touch-sensitive panel, an optically-clear adhesive (OCA)  11  is set on the substrate  10 . An anti-glare film  12  is adhered thereon to eliminate the reflective lights made by the metal materials. Then the touch-sensitive panel is adhered to the top substrate  14  via a further OCA  13  and set upon a LCD module  16  via OCA  15 . 
     Some solutions used to reduce the metal reflection are already provided in the conventional technologies, for example a blackened layer is plated upon the metal grids. The blackened layer is used to adjust a chromatic aberration between the screen and grid structure. However, the blackened layer made by metal or oxide materials will decrease the conductivity of the adjacent metal layer, and have poor resistance to environmental corrosion. 
     The conventional stacked structure formed by conductive electrode and substrate in a touch-sensitive panel is depicted in the cross-sectional diagram shown in  FIG. 2 . 
     A plastic substrate  21  is shown within the panel. A first electrode layer  23  is formed on the top surface of the substrate  21 . The electrode layer  23  is made of metal materials. The metal materials may cause metal reflection. A first blackened layer  25  is then formed on the surface of the electrode layer  23  for reducing the chromatic aberration between the metal layer and the screen. As shown in the diagram, while an incident light  201  irradiates the first electrode layer  23 , the first blacken layer  25  reflects the lights as the reflective light  202 . Similarly, the plastic substrate  21  reflects the incident light  203  and forms the reflective light  204 . 
     Further, another electrode layer such as a second electrode layer  29  is formed upon the other side of the plastic substrate  21 . A second blackened layer  27  is formed on an external surface of the second electrode layer  29 . The diagram shows the lights passes through the substrate  21  and reaches the second electrode  29 . The junction between the substrate  21  and the electrode layer  29  reflects the lights as the reflective light  205 . 
     The foregoing description related to the conventional technologies shows whether using the anti-glare component to reduce the metal reflection or adopting the blackened layer to decrease the chromatic aberration, it can not effectively solve the metal reflection made by the electrode layer; instead, the additional structure increases the thickness of the panel, decreases the conductivity of the metal layer, and has poor resistance to corrosion. 
     SUMMARY 
     Because the metal electrode lines in the conventional touch panel result in the metal reflection, an anti-glare film may be utilized to directly cover the metal lines for reducing the reflective lights. However, the anti-glare film may degrade quality of the panel display. Alternatively, the conventional technology incorporates a blackened layer not only to reduce the color shift between the electrode layer and the display, but also to decrease conductivity. It is featured that a touch-sensitive panel device, electrode structure, and a manufacturing method are provided in the disclosure. In addition to effectively reducing the reflective lights made by the metal electrodes or substrate, the electrode structure in accordance with the present invention also reduces thickness of the touch-sensitive panel without any influence of the display quality since it provides high transmittancy and conductivity. Further, the electrode structure has excellent weather resistance and corrosion resistance at high temperature and salt bath environment. 
     According to one embodiment, the main portions of the electrode structure are a metal conductive layer being an conductive structure of the electrode and formed on surface of the substrate; and a light-trimmed roughened structure formed on the metal conductive layer for scattering the metal reflection or the reflective lights from both the metal conductive layer and the substrate. The light-trimmed roughened structure is formed either by etching or machining the metal conductive layer, or by process of electrolytic process, sputtering, depositing, or coating. A blackened layer may also be introduced to the electrode structure in one further embodiment. The blackened layer is formed next to the light-trimmed roughened structure. The blackened layer may facilitate function of light trimming since it absorbs the lights emitted to the metal conductive layer. In the meantime, the blackened layer makes the incident light not to be reflected consistently at the same direction. Therefore, the metal reflection may be suppressed. 
     Based on the electrode structure mentioned above, the electrode structure in one further embodiment may include an adhesive layer. The electrode structure is combined with the substrate through this adhesive layer. The adhesive layer enhances adhesiveness between the electrode structure and the substrate. The adhesive layer may also be associated with a light-trimmed roughened structure. 
     According to one another embodiment depicting the electrode structure, a metal conductive layer and a blackened layer with roughened surface are included. The roughened surface of the blackened layer is made by etching or machining the blackened layer. The roughened surface scatters the reflective lights from the metal conductive layer, and also suppresses amount of the reflective lights. Similarly, an adhesive layer may also be disposed between the electrode structure and the substrate in this embodiment for enhancing adhesiveness. The adhesive layer may have its own light-trimmed roughened structure. 
     In the forgoing embodiment, one more blackened layer may be formed upon the existing blackened layer for reason to facilitate resistance of corrosion and blackening. One more adhesive layer may be added between the adhesive layer and the metal conductive layer. This added adhesive layer may be with light-trimmed roughened structure. 
     In one further embodiment of the electrode structure, the electrode structure includes an adhesive layer, a metal conductive layer, and a first blackened layer. The first blackened layer is formed on the metal conductive layer. The first blackened layer absorbs the lights emitted to the metal conductive layer for suppressing the reflective lights. A second blackened layer is formed on the first blackened layer. When etching or machining the surface of the second blackened layer so as to form the roughened surface structure, the effect to resist the reflective lights can be enhanced. The color shift between the substrate and the display can be reduced. Therefore, the electrode structure in the present embodiment includes, but not limited to, at least two adhesive layers, at least two blackened layers and light-trimmed roughened layers. 
     The electrode structure is fabricated with a substrate, and a touch-sensitive panel device is produced. 
     According to one further embodiment, the surface of substrate may be with a light-trimmed roughened structure. The roughened structure scatters the lights that entering the substrate. It effectively avoids the metal reflections and any visual discomfort that caused. 
     In one embodiment of the light-trimmed roughened structure formed within the electrode structure, an optically-clear adhesive (OCA) may be used in the structure as fabricating the structure. The optically-clear adhesive may fill up the gap of the light-trimmed roughened structure in a light-transmissive section. The OCA may decrease haze made by the light-trimmed roughened structure. The OCA may allow the blackened layer with surface texture to be darker, and suppress the color shift. 
     In order to further understand the techniques, means and effects of the present disclosure, the following detailed descriptions and appended drawings are hereby referred, such that, through which, the purposes, features and aspects of the present disclosure can be thoroughly and concretely appreciated; however, the appended drawings are merely provided for reference and illustration, without any intention to be used for limiting the present disclosure. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  shows a schematic diagram depicting cross-sectional structure of a conventional touch-sensitive display; 
         FIG. 2  shows a schematic diagram depicting cross-sectional stacked structure of conductive electrode and substrate in a conventional touch-sensitive panel; 
         FIG. 3  shows a schematic diagram depicting a basic electrode structure in one embodiment of the present invention; 
         FIG. 4  shows another schematic diagram depicting another basic electrode structure in one embodiment of the present invention; 
         FIG. 5  shows one further diagram schematically depicting an electrode structure of the embodiment of the present invention; 
         FIG. 6A  shows one diagram schematically depicting surface texture of substrate in one embodiment of the present invention; 
         FIG. 6B  shows one more diagram schematically depicting surface texture of substrate in one embodiment of the present invention; 
         FIG. 7A  shows a schematic diagram depicting combination of an electrode structure and a substrate in one embodiment of the present invention; 
         FIG. 7B  shows another schematic diagram depicting combination of the electrode structure and the substrate in one embodiment of the present invention; 
         FIG. 8  shows a schematic diagram depicting a touch-sensitive panel in one embodiment of the present invention; 
         FIG. 9  through  FIG. 11  schematically show the electrode structure in several embodiments of the present invention; 
         FIG. 12  shows a flow chart illustrating a process to manufacture the electrode structure according to one embodiment of the present invention. 
     
    
    
     DESCRIPTION OF THE EXEMPLARY EMBODIMENTS 
     Reference will now be made in detail to the exemplary embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts. 
     Disclosure in accordance with the present invention is related to a touch-sensitive panel device, an electrode structure, and a method for manufacturing the structure. The touch-sensitive panel utilizes electrode structure or conductive lines in metal or metal matrix composites. For eliminating the metal reflective lights made by the electrode structure having the metal structure or lines, a surface treatment process is applied to the metal materials so as to form a corrosion-resisting blackened layer. When the surface texture is incorporated to the electrode structure, it is thinner than the conventional anti-reflection lamination. Moreover, the disclosed electrode structure may also avoid the low conductivity problem caused by the conventional blackened structure. The touch-sensitive panel device therefore disposes the metal electrode lines with capability of anti-reflection. The panel also keeps the proper transmittancy and conductivity when it utilizes the metal electrode lines. 
     In the touch-sensitive panel device according to the embodiment of the present invention, a transparent substrate and the electrodes or conductive lines formed on the substrate are essentially included. The electrode structure is applicable to a touch-sensitive panel or a flexible touch-sensitive panel. In which, a light-trimmed roughened structure is formed upon surface of the metal. Alternatively, the light-trimmed roughened structure may be formed by etching or machining process. Moreover, the other manufacturing methods such as electrolytic process, sputtering and depositing for forming the roughened structure are not excluded. Furthermore, a blackened layer may be formed for either reducing energy of reflective lights, or optical matching and structural strengthening. 
     According to one embodiment of the present invention, the light-trimmed roughened structure formed upon the conductive metal or substrate is a thin layer. The thickness of the layer may be between 1 nm and 10 μm, and preferably between 50 nm and 2 μm. A blackened layer is formed after the conductive layer in order to suppress energy of reflective lights. It is characterized in that the blackened layer prefers brightness (L) with range of L&lt;50; value of red-green (a) in a specific chromatic coordinates with range of a&lt;−0.1; and value of yellow-blue (b) in a specific chromatic coordinates with range of b&lt;−0.1. 
     First Embodiment 
       FIG. 3  shows a schematic diagram depicting a basic electrode structure in one embodiment of the present invention. An electrode structure  32  is formed on a substrate  30 . The essential components of the electrode structure  32  include a metal conductive layer  301  being a conductive medium, a light-trimmed roughened layer  302 , and a blackened layer  303 . The feature of the structure and the process of making the structure may be referred to  FIG. 4 . 
     In the present embodiment, the electrode structure  32  may be directly formed onto a top and/or a bottom surface of a substrate  30 . A metal conductive layer  301  as a main conductive structure within the electrode structure  32  may be formed onto a predetermined structure by means of electrolytic process, sputtering process, or imprinting process. 
     It is characterized in that the metal easily reflects the incident lights when it is as the main material of conductive structure. The reflective lights may affect visual sense when the metal conductive layer  301  is applied to a display. Thus a roughening means is introduced to the electrode structure. For example, one of the various means of roughening is such as a light-trimmed roughened layer  302  formed on surface of the metal conductive layer  301  according to one embodiment of the invention. The light-trimmed roughened layer  302  may be formed by performing a surface treatment onto the metal conductive layer  301 . Alternatively, the light-trimmed roughened layer  302  may be formed by applying one roughened layer onto the metal conductive layer  301 . The surface structure effectively scatters the reflective lights made by the metal conductive layer  301 . 
     Next to the metal conductive layer  301  and the light-trimmed roughened layer  302 , a blackened layer  303  is formed. The blackened layer  303  is formed within the electrode structure  32 , for example, above the metal conductive layer  301 . The blackened layer  303  is featured to absorb lights emitted to the electrode structure  32 . The blackened layer  303  may also reduce color shift between the electrode structure  32  and the screen. Further, the blackened layer  303  may be as a protection to strengthen the electrode structure  32  and prevent corrosion. 
     Second Embodiment 
       FIG. 4  shows a schematic diagram depicting the basic electrode structure within the touch-sensitive panel in one embodiment. The related process for manufacturing the electrode structure may be referred to the flow shown in  FIG. 12 . 
     In step S 121  of  FIG. 12 , a substrate  40  is prepared. Metal is an essential material of the electrode structure  42  formed upon the substrate  40 . The diagram shows an example of one electrode structure in the panel device. A plurality of electrode structure arranged in an array may be formed as demands. The shown substrate  40  includes a glass substrate or a plastic substrate adapted to a flexible touch-sensitive panel. The plastic substrate may be made of PET (Polyethylene terephthalate), PEI (Polyetherimide), PPSU (Polyphenylensulfon), PI (Polyimide), or in combination thereof. 
     The electrode structure  42  has an adhesive layer  401  adjacent to the substrate  40 . The adhesive layer  401  is firstly formed on surface of the substrate  40 , as described in step S 123  of  FIG. 12 . An electrode structure  42  is then combined with the substrate  40  through the adhesive layer  401 . The adhesive layer  401  preferably enhances the adhesiveness between the electrode structure and the substrate  40 . Additional adhesive layer may also be added to strengthen the combination according to another embodiment. Next, a metal conductive layer  402  is then formed upon the adhesive layer  401  in step S 125  of  FIG. 12 . This metal conductive layer  402  acts as a main conductive structure for the electrode structure  42 . The metal conductive layer  402  may be made by process of electrolytic, sputtering, or imprinting onto a predetermined structure. Material of the metal conductive layer  402  is such as silver, copper, or the like. 
     In one further embodiment, a blackened layer  404  is utilized to reduce color shift of the display, or suppress reflective lights made by the metal conductive layer  402  in a display panel. The blackened layer  404  is formed onto the metal conductive layer  402  by process of electrolytic, sputtering, depositing, or coating in step S 129  of  FIG. 12 . The blackened layer  404  is able to strengthen the structure and resist corrosion in addition to reducing color shift and reflective lights of the display. 
     Furthermore, a light-trimmed roughened layer  403  may be formed, such as step S 127  of  FIG. 12 , onto the surface of the metal conductive layer  402  before the above-mentioned blackened layer  404  is formed. This light-trimmed roughened layer  403  is such as a light-trimmed roughened structure which undergoes a surface treatment, e.g. texturization. For example, the surface texture may be made by etching or machining the surface of metal conductive layer  402 . Additional roughened structure layer may be formed directly onto the metal conductive layer  402  by performing electrolytic process, sputtering, or depositing. The surface texture scatters the reflective lights made by the metal conductive layer  402 , or suppresses the reflective lights simultaneously caused by the metal conductive layer  402  and the substrate  40 . 
     Consequently, the blackened layer  404  is formed on the light-trimmed roughened layer  403 . This blackened layer  404  is such as an additional blackened layer formed by process of electrolytic, sputtering, depositing, or coating. This continuous non-planar structure formed on the metal conductive layer  402  is utilized to scatter and absorb the lights emitted to the metal conductive layer  402 . Therefore the metal reflection can be suppressed. Further, the continuous non-planar structure may simultaneously keep the conductivity from declining since the structure is able to increase probability of electron tunneling. Still further, the structure is as a protective layer for corrosion resistance since it has better bonding strength and hardness than the metal conductor. The blackened layer  404  may also be an auxiliary structure to define the appearance of the metal electrode when it is an exterior layer of the electrode structure  42 . 
     Still further, in accordance with one embodiment, an optically-clear adhesive (OCA) is used to combine the electrode structure  42  with the upper components of the touch-sensitive panel device such as the upper membranes and substrate and/or lower membranes and display module. While the optically-clear adhesive is adhered to the upmost blackened layer  404  of the electrode structure  42  in this embodiment, the OCA allows the blackened layer  404  to be much blackened and with higher contrast ratio according to its characteristics. Therefore, the OCA may decrease mist interference made by the roughened structure. As a whole, the OCA is utilized for the display to provide a comfortable visual experience. 
     Third Embodiment 
     The electrode structure according to one further embodiment of the present invention is referred to  FIG. 5 . The schematic diagram shows an electrode structure  52  formed on a substrate  50 . The substrate  50  is prepared as the transparent material such as plastic or glass material. The main components of the electrode structure  52  include a first adhesive layer  501  adhering the substrate  50  to the electrode structure  52 . This first adhesive layer  501  is able to strengthen the adhesiveness between the electrode structure  52  and the substrate  50 . Another adhesive layer (the second) may be added onto the first adhesive layer  501 . Such second adhesive layer  502  may further enhance the adhesiveness for the following metal conductive layer, the substrate  50 , and the first adhesive layer  501 . 
     Next, a metal conductive layer  503  is formed onto the second adhesive layer  502 . The metal conductive layer  503  is as a conductive layer for the electrode structure. The related material is such as silver or copper, but not excluding the other conductive materials. According to the present embodiment, when etching the surface of the metal conductive layer  503 , a light-trimmed roughened layer  504  is formed. The light-trimmed roughened layer  504  may also be an additional layer upon the metal conductive layer  503  by performing electrolytic process, sputtering or depositing. The light-trimmed roughened layer  504  allows scattering the lights reached to its surface texture and eliminating the consistent reflective lights. 
     The various metal materials for the metal conductive layer  503  easily reflect the incident lights, and also decline the conductivity because of the oxide substance. Thus a first blackened layer  505  may be necessarily prepared for the light-trimmed roughened layer  504  to corrosion resistance. The first blackened layer  505  is a black substance or other material with deep color for effectively reducing the metal reflection and the color shift of the display. Furthermore, the first blackened layer may be made of metal-based material. The metal blackened layer may keep the conductivity of the electrode structure  52 . The blackened layer may provide better corrosion resistance than the metal conductive layer  503  or other components within the electrode structure. The blackened layer is as a covering structure for the electrode structure and as an auxiliary layer for defining the appearance of the electrode structure. 
     In addition to the above-mentioned layers within the electrode structure, one further stacked type of blackened layer is formed upon the first blackened layer  505 , for example the second blackened layer  506 . The second blackened layer  506  may provide the similar function of corrosion resistance and no-loss conductivity. Further, the second blackened layer  506  may enhance chromaticity of black. The roughened structure may further decrease the reflectivity of the surface. 
     Through the optical matching made in combination of the foregoing adhesive layer, light-trimmed roughened structure, and blackened layer, the electrode structure with low reflectivity or without reflectivity is formed. The electrode structure renders a comfortable visual environment for the people to watch the content on the display without surrounding influence from poor light. 
     As a whole, the blackened layer within the electrode structure effectively reduces the metal reflection, and the color shift of display; the light-trimmed roughened structure is able to reduce internal or external reflective lights. The top and bottom surfaces of the substrate may be equipped with the light-trimmed roughened structure shown in  FIG. 6 . It is able to enhance the comfortness of visual experience when the electrode structure is applied to the touch-sensitive panel. 
     Fourth Embodiment 
     The mentioned light-trimmed roughened structure is formed upon the substrate. As shown in  FIG. 6A , the light-trimmed roughened structures  601 ,  602  may be formed on the surface of substrate  60  by performing the surface treatment. The process is such as etching or surface machining. More specifically, the light-trimmed roughened structures  601 ,  602  are formed by etching process using sulfuric acid or permanganate, mechanical physical method, or plasma cleaning process using roll-forming, ion beam, electrical corona, or atmospheric plasma. The light-trimmed roughened structures  601 ,  602  in the current embodiment have the same material with the substrate. 
     When the electrode structure is formed on the substrate  60 , the light-trimmed roughened structure renders the incident lights non-consistently directed to the same direction for reducing the reflective lights. The reflective lights to the substrate  60  can be immediately reduced. 
       FIG. 6B  shows a schematic diagram depicting the surface structure of the substrate  60 ′ for reducing the reflective lights. A first light-trimmed roughened layer  601 ′ is formed upon the top surface of substrate  60 ′. One of the objectives of the light-trimmed roughened structure is to reduce the reflective lights made by the whole substrate  60 ′. The light-trimmed roughened layers  601 ′,  602 ′ may be the additional structure formed thereon, for example made by electrolytic, sputtering, coating, imprint, or depositing process performed to the surface. 
     The bottom surface of the substrate  60 ′ may be formed with a second light-trimmed roughened layer  602 ′. The process for forming the second light-trimmed roughened layer  602 ′ is such as the foregoing method for the first light-trimmed roughened layer  601 ′. With the disposal of both the first light-trimmed roughened layer  601 ′ and the second light-trimmed roughened layer  602 ′ on the substrate  60 ′, the reflective lights made by the external lights emitted to the structure and the internal lights affecting the visual comfortness from the backlit module can be effectively reduced. It is noted that the backlight emitted from the backlit module easily results in moire interference when it passes through the black matrix of color filter and metal electrodes. The first or second light-trimmed roughened layer is utilized to destroy the consistent backlight as passing through the black matrix for eliminating the moire. When disposing the light-trimmed roughened structure on the substrate, it effectively reduces the thickness of the components within the electrode structure, and eliminates the metal reflection, and moire interference. 
     The following description of the design of the panel device may be in view of the diagram illustrating the incident and reflected lights shown in  FIG. 2 . The second light-trimmed roughened layer  602 ′ over the surface of substrate  60 ′ is engaged with the electrode structure located at the lower surface of the substrate  60 ′. The second light-trimmed roughened layer  602 ′ as a whole effectively eliminates the metal reflection also because the lights reaching the lower surface of the substrate  60 ′ is reduced. 
     The first light-trimmed roughened layer  601 ′ and the second light-trimmed roughened layer  602 ′ may be made by additionally coating an ultraviolet glue or organic-inorganic silicone resin to form a hardened layer. However, this method makes the light-trimmed roughened layer have different material form the substrate. 
     The light-trimmed roughened structures  601 ,  602  shown in  FIG. 6A , and the first light-trimmed roughened layer  601 ′ and the second light-trimmed roughened layer  602 ′ according to the present embodiment may have a roughness such as center line average roughness (Ra) ranged between 0.001 um and 0.2 um, and preferably Ra=0.02-0.1 um. 
     Fifth Embodiment 
       FIG. 7A  shows a schematic diagram depicting an electrode structure  72  and a substrate  70  with a light-trimmed roughened structure  701 . 
     The electrode structure  72  is as a stacked structure formed onto the substrate  70 . The main components of the electrode structure  72  include a first adhesive layer  721  engaged with the substrate  70 . The surface of substrate  70  for the engagement may be formed with the light-trimmed roughened structure shown in  FIG. 6  such as the light-trimmed roughened layer  701  in the current example. 
     Furthermore, another adhesive layer may be formed onto the first adhesive layer  721 , such as the second adhesive layer  722 . The second adhesive layer  722  is an auxiliary structure to combine the next metal conductive layer  723 . The metal conductive layer  723  may be formed based on the above-mentioned methods. For reducing or eliminating the metal reflection made by this metal conductive layer  723 , a further light-trimmed roughened layer  724  is formed on the metal conductive layer  723  within the electrode structure  72 . Still further, a first blackened layer  725  is formed for corrosion resistance and blackening effect. For further reducing the color shift of display, another blackened layer such as the shown second blackened layer  726  is formed onto the first blackened layer  725 . The second blackened layer  726  also enhances the capability of corrosion resistance and blackening. 
     When the exterior surface of the electrode structure is formed with a light-trimmed roughened or blackened structure within the stacked structure, the reflective lights made by the substrate  70  or metal conductive layer  723  can be effectively reduced or completely eliminated. In the meantime, the color shift of display can be improved. 
     Sixth Embodiment 
     In  FIG. 7B , the light-trimmed roughened structure, for example  724  of  FIG. 7A , can be formed simultaneously on both the substrate and electrode structure at the last processing. Other than the step of machining, according to one embodiment, additional ultraviolet glue or organic-inorganic silicone resin may be coated as a hardened light-trimmed roughened structure on the surface of the substrate and electrode structure. The coating process allows the light-trimmed roughened layer having different material from the electrode and substrate. The process for forming the light-trimmed roughened structure is such as process of electrolytic, sputtering, coating, imprint, or depositing. 
     As  FIG. 7B  shows, the electrode structure  72 ′ formed on the substrate  70 ′ has no light-trimmed roughened layer  724  formed on the metal conductive layer  723  shown in  FIG. 7A . The light-trimmed roughened layer ( 701  of  FIG. 7A ) may not be necessarily formed on the substrate  70 ′ in the beginning. The light-trimmed roughened structure  727  may be simultaneously formed over the substrate  70 ′ and the electrode structure  72 ′ in the last machining step after forming the first blackened layer  725 ′ or adding the second blackened layer  726 ′ 
     For the examples shown in  FIG. 7A  or  FIG. 7B , the first adhesive layer  721  and/or the second adhesive layer  722  may be made of polymer, oxide, metal material, or in combination thereof. More specifically, the polymer within the first adhesive layer  721  may improve the adhesiveness between the first adhesive layer  721  and the substrate  70 . The oxide material in the first adhesive layer  721  and/or the second adhesive layer  722  allows the adhesive layer(s) to be with features of anti-reflection, anti-interference, anti-rainbow pattern, wear resistance, and scratch resistance. The metal material of the first adhesive layer  721  enhances adhesiveness of the first adhesive layer  721  and the second adhesive layer  722 . 
     The materials adopted in the stacked structure may be polymer such as acrylic, PET, PEI, PPSU, PI, PEDOT, Polyaniline, Polypyrrole or the composite material in combination thereof. The oxide may be amorphous or polycrystal oxide film or powder. The oxide may be made of titanium oxide, tantalum oxide, silicon oxide, aluminum oxide, or the composite material in combination thereof. The metal may be copper, silver, aluminum, molybdenum, nickel, chromium, tungsten, titanium, silicon, zinc, tin, iron or composite material in combination thereof. The stacked structure may be in combination of two or three materials of polymer, metal, and oxide. The composite material may be in combination of metal and oxide, polymer and metal, polymer and oxide, or metal, oxide and polymer. The proportion of polymer in the composite material is around 10-90%. The proportion of oxide in the composite material is around 10-90%. The proportion of metal is around 10-90%. The oxide may also be stacked structure. 
     In one further embodiment, the thickness of the Titanic oxide is around 900 nm. The thickness of silicon oxide is around 100 nm. The thickness of the first adhesive layer  721  and/or the second adhesive layer  722  is preferably between 0.001 um and 1 um. The reflectivity of the first adhesive layer  721  and/or second adhesive layer  722  is between 1% and 50%, and preferably lower than 30%. It is noted that the first adhesive layer  721  and/or the second adhesive layer  722  undergoes a machining process so as to form roughened structure for reducing the reflective lights. 
     It is noted that the method for forming the first adhesive layer  721  and/or the second adhesive layer  722  is such as (1) strengthening the sputtering energy to bombard the material of adhesive layer into the substrate; (2) adding color polymer such as Polyaniline into the adhesive layer; or (3) etching the material of adhesive layer to form porous structure. 
     The metal conductive layer  723  may be made of copper, gold, silver, aluminum, tungsten, iron, nickel, chromium, titanium, molybdenum, indium, tin, or the composite material in combination thereof. The thickness of the metal conductive layer  723  is preferably around 0.001 um to 5 um. 
     For increasing adhesiveness and conductivity, the electrode structure  72  could be a graduated structure for that when the metal conductive layer  723  is made of pure metal, the adjacent second adhesive layer  722  may have content of the pure metal more than 50%, and the first adhesive layer  721  includes content of pure metal less than 50%. For example, while the conductive layer  723  is pure copper, the first adhesive layer  721  may be nickel-copper-chromium-iron alloy. The proportion of compositions of nickel, copper, chromium and iron in the alloy is 60:30:10:0; or 80:10:5:5. The first adhesive layer  721  may also be nickel-tungsten alloy, and its proportion of nickel and tungsten is 50:50. Further, the first adhesive layer  721  may be additionally added with silicon and phosphorus. The second adhesive layer  722  may be copper-nickel-chromium alloy, and its proportion of copper, nickel and chromium is 60:30:10. The second adhesive layer  722  may also be copper-nickel-tungsten alloy, and its proportion is 60:20:20. Further, The second adhesive layer  722  may also be added with silicon and phosphorus. 
     The light-trimmed roughened layer  724  within the electrode structure  72  is a light-trimmed roughened structure which is formed in a destructive way to increase the surface roughness by mechanical physical roughening process such as roll-forming or plasma etching, or chemical etching process. The layer has the same material with the metal conductive layer  723 . 
     The light-trimmed roughened layer is referred the component  724  of  FIG. 7A . The light-trimmed roughened layer  724  is configured to be extended until the metal conductive layer  723  is fully covered. The light-trimmed roughened layer  724  may have different material from the metal conductive layer  723 . The roughened layer  724  may be made by (1) modifying condition of coating process, including dry-coating such as sputtering or evaporation, or wet-coating such as electroplating or chemical plating, and the light-trimmed roughened layer  724  is plated to be non-continuous island-distributed roughened surface or porous structure; or (2) flattening the light-trimmed roughened layer  724  in a destructive way to increase its surface roughness by mechanical physical roughening process such as roll-forming, plasma etching, or chemical etching. The light-trimmed roughened layer  724  may be made of polymer, oxide, or metal when it is formed in the configuration of extension. The layer  724  may have the same material with the metal conductive layer  723 ; or the same with the first blackened layer  725 . 
     The light-trimmed roughened layer  724  renders the surface roughness of the electrode structure  72 . The layer  724  allows the electrode structure  72  to be with ability of anti-reflection, adhering photo-enabled or thermal-enabled anticorrosive agent to the surface. Therefore, the touch-sensitive panel with the electrode structure  72  is not necessary to dispose an additional anti-glare film. The method allows reducing cost without affecting the etching process upon the fine lines. The roughness (Ra) of the light-trimmed roughened layer  724  is ranged between 0.001 um and 0.2 um. The preferred roughness (Ra) is around 0.02 um to 0.1 um. A haze should therefore be smaller than 2. 
     The mentioned first and/or second blackened layers  725 ,  726  may be made of copper, silver, aluminum, molybdenum, nickel, chromium, tungsten, titanium, silicon, zinc, tin, iron, or in combination thereof. The thickness of the first blackened layer  725  and/or second blackened layer  726  is around 0.001 um to 1 um. The reflectivity of the first blackened layer  725  and/or second blackened layer  726  is around 1% to 50%, and preferably lower than 30%. 
     The second blackened layer  726  is such as another blackened layer which covers the first blackened layer  725 . The second blackened layer  726  improves the capability of corrosion resistance and blackening. The whole structure may therefore have enhanced environmental adaptability. The second blackened layer  726  assists the first blackened layer  725  to improve the chromaticity of black and capability of reflection. It is noted that the second blackened layer  726  may be made of oxide, polymer, carbon, or their mixture. The oxide is such as silicon oxide, titanium oxide, aluminum oxide, or their mixture. The polymer is such as a mixture of acrylic and alkylbenzimidazole, alkyl-benzene compound, PET, or color-organic matter such as PEDOT, Polyphenylamine, or their mixture. 
     In the mixture of second blackened layer  726 , the proportion of polymer in the mixture is 10-90%, and oxide in the mixture is 10-90%. The thickness of the second blackened layer  726  is preferably 0.001 um to 1 um. The reflectivity of the second blackened layer  726  is around 1% to 50%, and preferably lower than 30%. An overall reflectivity of the first blackened layer  725  and the second blackened layer  726  should be lower than 30%. For example, while the panel device is applied to a display, the reflectivity is lower than 30%, a/−a axis of chromatic coordinates is lower than −2, b/−b axis of chromatic coordinates is lower than −4 when the backlight of display is shut down. When a polarizer is applied to a display, the chromaticity may be shifted to blue-green, and the polarizer allows the display to have b=−7. 
     The first blackened layer  725  may simultaneously adjust the color of the metal lines for matching the color of the metal itself. For example, the base of pure copper has reflectivity larger than 50% with L&gt;90%, a&lt;0.1, and b&gt;2. The first blackened layer  725  allows the display to approach the color of Black matrix (BM), and reduce the contrast chromatic aberration. 
     It is noted that the human eyes easily see the yellow-shifted metal reflection if the value of b is larger than 1, or reflectivity larger than 50%. The chromaticity of the first and/or second blackened layer  725 ,  726  may be changed when the thickness of the material is changed. The disposal of second blackened layer  726  is able to modify chromaticity of the first blackened layer  725  to be covered and make it approach the color of the Black matrix of display. The blackened layer also assists the structure to have capability of resisting color shift, anti-reflection, anti-moire interference, anti-rainbow pattern, wear resistance, and scratch resistance. 
     The disclosure related to the electrode structure with roughened structure described may be one of the embodiments of the present invention, but not limit the scope of the present invention. 
     Seventh Embodiment 
     The further embodiment is described in  FIG. 8  which shows a schematic diagram of the assembly of substrate and electrode structure applied to a touch-sensitive panel. 
     In addition to the substrate having a surface with light-trimmed roughened structure according to one of the embodiments, both the top and bottom surfaces of the substrate  80  in accordance with the present invention are equipped with light-trimmed roughened structures. For example, the first light-trimmed roughened layer  801  and second light-trimmed roughened layer  802  may be formed by the process of chemical etching using sulfuric acid or permanganate, mechanical physical process such as roll-forming, plasma cleaning using ion beam, electrical corona, or atmospheric plasma. 
     The first electrode structure  82  formed on the first light-trimmed roughened layer  801  on top surface of the substrate  80  has the same structure with the second electrode structure  84  located below. The related description is referred to  FIG. 7A  or  FIG. 7B . The structure within the first electrode structure  82  and the second electrode structure  84  is given with functions such as resistance of color shift, anti-corrosion, anti-moire interference, anti-rainbow pattern, wear resistance, and scratch resistance. The structure at least includes adhesive layer, blackened layer, and light-trimmed roughened structure. Reference is made to  FIG. 7A  or  FIG. 7B . 
     A first light-trimmed roughened layer  801  is formed on an external surface of substrate  80  for the purpose of anti-reflection. The second light-trimmed roughened layer  802  is utilized to reduce or prevent the metal reflection made by the second electrode structure  84 . Since the metal reflection can be effectively reduced, the visual effect is significantly improved. Therefore, the electrode structure in accordance with the present invention provides great comfort for the human eyes, effectively reduces the thickness of the structure, and suppresses moire interference. 
     The touch-sensitive panel device constituting the display is assembled of substrate  80  and electrode structures  82 ,  84 . As the diagram shows, optically-clear adhesives  811 ,  812  are as the adhesive agent. For example, the substrate  80  and electrode structures  82 ,  84  in the touch-sensitive panel device are assembled with the top optical components via optically-clear adhesive  811 . The figure shows the assembly of transparent substrate  803  and other optical components is combined with an LCD module  804  through optically-clear adhesive  812 . When the light-trimmed roughened structure formed on the surface of the assembly of substrate  80  and electrode structures  82 ,  84  is combined with other components, the optically-clear adhesives  811 ,  812  are filled in. The optically-clear adhesives  811 ,  812  may fill up the gaps of the surface roughened structure to decrease the haze while roughening the light-transmissive section of the device. The light transmittance of the light-transmissive section may be improved. 
     The optically-clear adhesives  811 ,  812  fill up the gaps formed by incorporating the first light-trimmed roughened layer  801  and the second light-trimmed roughened layer  802 , so as to decrease the haze of the light-transmissive section. Furthermore, the material of the optically-clear adhesives  811 ,  812  is similar with the substrate  80  and has smaller refractive difference. In addition to increasing light transmittance of light-transmissive section of the substrate  80  while filling up the roughened surface, the OCA also allows the blackened layer with anti-corrosion to approach pure black in chromaticity, or reach similar chromaticity with the Black matrix of display. The OCA therefore reduces the haze. The OCA will not affect the function of light-trimmed roughened layer. The comfort of human eyes is improved while the blackened layer effectively shields the metal mesh. 
     It is noting that rather than plating film such as anti-reflection film with lower refractivity onto the substrate in the conventional technology, an optically-clear adhesive is applied for improving light transmittance. The OCA fills up the gap caused by the roughened structure when roughening the substrate, also decreases haze. For example, since the refractivity of the OCA and the glass of the panel device is lower than the PET substrate, the light transmittance can be improved. The experimental data shows the refractivity of surface glass is around 1.53; refractivity of optically-clear adhesive is around 1.46-1.47; and refractivity of PET substrate is around 1.62. 
     The embodiments of the electrode structure may not be limited to the above description. The followings also show the other embodiments of the electrode structure. The materials of the adhesive layer, metal conductive layer, light-trimmed roughened layer, and the blackened layer, method for manufacturing the same, and the related stacked structure may still be referred to the above embodiments. 
       FIG. 9  shows a schematic diagram depicting the electrode structure formed on a substrate in one of the embodiments. The diagram shows a light-trimmed roughened structure formed as a light-trimmed roughened layer  901  on the substrate  90  for reducing the reflective lights. The main components of the electrode structure are, but not limited to, referred to the description of  FIGS. 7A, 7B and 8 . The light-trimmed roughened structure is formed by directly etching or machining the metal conductive layer  923 . When the light-trimmed roughened layer is formed, the following structure may therefore be shaped as the roughened texture. For example, the surface structure of first blackened layer  924  and second blackened layer  925  are shaped with the light-trimmed roughened structure of the metal conductive layer  923 . 
       FIG. 10  shows the electrode structure according to one further embodiment. An electrode structure is formed on the light-trimmed roughened layer  901  on the surface of substrate  90 . The first blackened layer  924 ′ formed on the metal conductive layer  923 ′ is made by roughening its surface using etching or machining. That means the light-trimmed roughened structure is formed by directly machining the blackened layer. In which, the first blackened layer  924 ′ is formed on the metal conductive layer  923 ′ by means of electrolytic, sputtering, depositing, or coating. The first blackened layer  924 ′ with the surface texture is able to scatter the reflective lights made by the metal conductive layer  923 ′, and further suppress the quantity of the reflective lights. 
     Next, one further blackened layer such as the second blackened layer  925 ′ is formed upon the first blackened layer  924 ′ which already has roughened structure. This second blackened layer  925 ′ has its surface texture when it matches the surface structure of the first blackened layer  924 ′. 
     Reference next is made to  FIG. 11 . A first blackened layer  924 ″ formed on the metal conductive layer  923 ″ within the electrode structure remains unchanged, but directly etches or machines the second blackened layer  925 ″. The second blackened layer  925 ″ is therefore with its own surface structure. This second blackened layer  925 ″ is formed onto the first blackened layer  924 ″. The second blackened layer  925 ″ is utilized to scatter the reflective lights made by the metal conductive layer  923 ″. The quantity of reflective lights is as well reduced. 
     When manufacturing the two blackened layers, the first blackened layer  924 ″ may be formed on the conductive layer by the process of electrolytic, sputtering, depositing, or coating the materials. The second blackened layer  925 ″ may be made by performing electrolytic, sputtering, depositing, or coating process, and formed on the first blackened layer  924 ″. 
     The materials of the components within the electrode structure and the combination shown in  FIG. 11  may be referred to above embodiments. The selection of materials, requirement of thickness and reflectivity may be referred to the above description. 
     Thus, the touch-sensitive panel device according to the disclosure includes at least one electrode structure with blackened layer rather than the disposal of blackened layer on a copper layer in the conventional technology. The stacked structure of the electrode structure allows suppressing the reflective lights made by the metal material and substrate, and significantly reducing thickness of the touch-sensitive panel. The structure does not increase haze of the light-transmissive section, and not affects conductivity of the metal layer. Meanwhile, it provides great weather resistance and good life at high temperature salt bath environment. 
     The above-mentioned descriptions represent merely the exemplary embodiment of the present disclosure, without any intention to limit the scope of the present disclosure thereto. Various equivalent changes, alternations or modifications based on the claims of present disclosure are all consequently viewed as being embraced by the scope of the present disclosure.