WO2014017691A1 - Interface panel for display and method for manufacturing same - Google Patents

Description

Display interface panel and its manufacturing method

The present invention relates to an interface panel for a display and a method of manufacturing the same. More specifically, the present invention relates to an interface panel for a display, and a method of manufacturing the same, having visibility improved by providing an electrode pattern layer having a specific cross section.

The display interface panel is attached to the front of the display to receive a user's touch input. The touch of the interface panel for displays is rapidly changing from a resistive resistive method to a capacitive method. This capacitance type is divided into a film type and a glass type. Conventional film and glass types are based on ITO.

Recently, according to the trend of high functionalization of interface panels for displays, there is a demand for a conductive material having higher electrical conductivity than indium tin oxide, which is a conventional transparent sensing electrode material. Indium tin oxide is a rare element, which is expected to intensify price fluctuations in relation to supply and demand worldwide. Accordingly, efforts are being made to replace the transparent sensing electrode with a metal mesh structure of highly conductive metal thin wires.

However, when a mesh structure composed of fine metal wires is used in a window area where a user touches, a light reflection problem in fine metal wires and light transmittance according to a fill ratio are formed by forming an electrode pattern with a metal mesh. There may be a reduction problem. For this reason, the pattern visibility of the display interface panel may deteriorate. Nevertheless, the structure using the metal thin wire can simultaneously form the window region and the wiring region of the same material, there is an advantage that the manufacturing process can be simplified and the productivity can be improved. Therefore, the recent industry continues the technical attempt to improve the optical characteristic which is a weak point when using a metal thin wire.

The present inventors have developed an interface panel for a display having a stripe pattern using a conductive paste. However, when the cross section of the pattern is rectangular as shown in FIG. 12, there is a problem in that the pattern is visible by reflection.

One object of the present invention is to provide an interface panel for a display having improved transmittance and visibility and a method of manufacturing the same.

Another object of the present invention is to provide an interface panel for a display in which a cover window and a transparent insulating substrate are integrated, and a method of manufacturing the same.

Still another object of the present invention is to provide an interface panel for a display and a method of manufacturing the same, which can simplify the manufacturing process and reduce manufacturing costs.

Still another object of the present invention is to reduce the line width and line distance of the metal wiring formed in the bezel portion of the display interface panel, thereby substantially extending the effective display area of the display interface panel, thereby making it more versatile. It is to provide an interface panel for display that can implement functions and contribute to product competitiveness.

Still another object of the present invention is to provide an interface panel for a display that can reduce manufacturing costs and implement optical characteristics equivalent to or higher than those of the related art by not using expensive ITO.

It is still another object of the present invention to provide a method for manufacturing an interface panel for a display that can simplify a manufacturing process by omitting a conventional pattern forming process such as lithography.

One aspect of the invention relates to an interface panel for a display. The display interface panel includes a cover window; A first transparent insulating substrate having a first surface in contact with the cover window and a second surface opposite thereto; And a first electrode pattern layer formed on a second surface of the first transparent insulating substrate, wherein a cross section of the first electrode pattern layer is a triangle, and a vertex of the triangle is formed toward the cover window.

In an embodiment, a second transparent insulating substrate is further laminated on the first transparent insulating substrate; The second transparent insulating substrate has a first surface in contact with the first transparent insulating substrate and a second surface opposite thereto, and a second electrode pattern layer is formed on the second surface of the second transparent insulating substrate; The cross section of the second electrode pattern layer is a triangle, characterized in that the vertex of the triangle is formed toward the cover window.

The first electrode pattern layer may be arranged in a stripe shape along a first direction, and the second electrode pattern layer may be arranged in a stripe shape along a second direction different from the first direction.

The electrode pattern may be printed by pad printing, in-printing, plating, offset printing, screen printing, photolithography, deep fan nanolithography, offset lithography, letter press, inkjet printing, gravure printing, and flexographic. It can be formed by the law.

Each of the first and second electrode pattern layers may have a plurality of stripe patterns each having a triangular cross section, and a base w of the triangle may be 0.1 to 20 μm, and a vertex angle may be 30 to 150 °.

The stripe pattern may have a distance d of 10 to 1500 μm from another stripe pattern adjacent to the same surface.

Any one of the stripe patterns of the first electrode pattern layer and one of the stripe patterns of the second electrode pattern layer may be electrically connected.

The first electrode pattern layer and the second electrode pattern layer may include conductive particles and a binder to fix the conductive particles.

The conductive particles may include a conductive metal, an alloy of the metal, a conductive polymer, carbon particles, or a combination thereof.

The conductive particles may have an average particle size (D50) of 1 nm to 20 μm.

The binder may have a refractive index difference of about 1.72 from that of the first and second transparent insulating substrates.

The first transparent insulating substrate and the second transparent insulating substrate may include a curable resin.

A bezel portion may be formed at an edge of the cover window to define an effective display area.

Another aspect of the invention relates to a method of manufacturing an interface panel for a display. The method comprises the steps of (a) preparing a cover window; (b) forming a first transparent insulating substrate having a plurality of first trenches spaced apart from each other along a first direction on the cover window; (c) filling a conductive paste into the plurality of first trenches to form a first electrode pattern layer on the first transparent insulating substrate, wherein the first trench is triangular in cross section and has a vertex angle of the triangle. It characterized in that formed toward the cover window.

In an embodiment, after the step (c), (d) stacking a second transparent insulating substrate having a plurality of second trenches spaced apart from each other along a second direction on the first transparent insulating substrate; And (e) filling the conductive paste in the plurality of second trenches to form a second electrode pattern layer on the second transparent insulating substrate, wherein the second trench is triangular in cross section. The vertex angle of the triangle is formed toward the cover window.

In the step (b), after filling the cover window with the upper part of the mold having the uneven pattern formed on the bottom surface, filling the resin material including the curable resin, curing the resin material, and the mold It may include a step of leaving from the cured resin.

Step (c) and step (e), respectively, filling a conductive paste containing conductive particles and a binder into the plurality of first trenches or the plurality of second trenches, and curing the conductive paste. Process may be included.

In the step (d), a process of filling a resin material including a curable resin after covering an upper surface of a mold having a concave-convex pattern formed on the bottom surface with a surface on which the first electrode pattern layer of the first transparent insulating substrate is formed, It may include the step of curing the resin, and the process of leaving the mold from the cured resin.

The uneven pattern may be formed through lithography or metal processing.

In another embodiment, the display interface panel comprises the steps of preparing a substrate; Forming a first electrode pattern layer having a stripe shape arranged along one direction of the substrate; And forming a first resin layer formed of a transparent insulating substrate on the first electrode pattern layer, wherein the first electrode pattern layer has a triangular cross section and a vertex of the triangle is formed toward the cover window. Shall be.

Forming a second electrode pattern layer having a stripe shape arranged on the first resin layer in a second direction different from the first direction; And forming a second resin layer formed of a transparent insulating substrate on the second electrode pattern layer, wherein the second electrode pattern layer has a triangular cross section, and the vertex of the triangle faces the cover window. Characterized in that formed.

According to the present invention, the transmittance and visibility are greatly improved, the cover window and the transparent insulating substrate are bonded together to be integrated, and the electrode is directly patterned on the transparent insulating substrate, so that the adhesive layer may be generated in the bonding of multiple layers such as conventional cover glass and ITO. It is possible to reduce defects on the occurrence of air bubbles, to simplify the process, and to reduce manufacturing costs. In addition, according to the present invention, it is possible to reduce the line width and the line distance of the metal wiring formed in the bezel portion of the display interface panel, thereby substantially extending the effective display area of the display interface panel, thereby making it more versatile. Functions can be implemented, which contributes to product competitiveness. And according to the present invention, by not using expensive ITO, not only can reduce the manufacturing cost, but also can implement the same or more optical characteristics than the conventional, and by omitting the conventional pattern forming process, such as lithography The manufacturing process can be simplified.

1 is a cross-sectional view showing an interface panel for a display according to an embodiment of the present invention.

2 is a cross-sectional view showing an interface panel for a display according to another embodiment of the present invention.

3 is a flowchart illustrating a method of manufacturing an interface panel for a display according to an exemplary embodiment of the present invention.

4 to 9 are process charts showing a method of manufacturing an interface panel for a display according to an embodiment of the present invention in the order of process.

10 is a cross-sectional view illustrating an interface panel for a display on which an electrode pattern layer having a rectangular cross section is formed.

11 is a plan view of an interface panel for a display according to another embodiment of the present invention.

12 to 14 are process charts showing the manufacturing method of the interface panel for a display according to another embodiment of the present invention in the order of process.

Hereinafter, exemplary embodiments of the present application will be described in detail with reference to the accompanying drawings. However, the technology disclosed in the present application is not limited to the embodiments described herein and may be embodied in other forms. However, the embodiments introduced herein are provided to ensure that the disclosed contents are thorough and complete, and that the spirit of the present application is sufficiently conveyed to those skilled in the art. In the drawings, the width, thickness, and the like of the components are enlarged in order to clearly express the components of each device. In addition, although only a part of the components are shown for convenience of description, those skilled in the art will be able to easily understand the rest of the components. When described in the drawings as a whole, at the point of view of the observer, and when one element is referred to as being above or below another element, it is said that one element is located directly above or below another element or there is an additional element between them. It includes everything that can be done. In addition, one of ordinary skill in the art may implement the spirit of the present application in various other forms without departing from the technical spirit of the present application. In addition, in the drawings, the same reference numerals refer to substantially the same elements.

On the other hand, the meaning of the terms described in the present application should be understood as follows. Terms such as “first” or “second” are intended to distinguish one component from another, and the scope of rights should not be limited by these terms. For example, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

Also, the singular forms “a,” “an” and “the” include the plural expressions unless the context clearly indicates otherwise. It is to be understood that the intent is to specify that there is a part or a combination thereof, and does not exclude in advance the possibility of the presence or addition of one or more other features or numbers, steps, operations, components, parts or combinations thereof.

In addition, in carrying out a method or a manufacturing method, each of the processes constituting the method may occur out of the stated order unless the context clearly indicates a specific order. That is, each process may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

The excellent visibility in the present invention means that an electrode pattern such as a thin metal wire is not seen by reflection when viewed from the cover window.

Interface panel for display

1 is a cross-sectional view of an interface panel 100 for a display according to an embodiment of the present invention. The display interface panel 100 includes a cover window 110, a first transparent insulating substrate 120, and a first electrode pattern layer 150. As shown, the first transparent insulating substrate 120 has a first surface 120a and a second surface 120b, and the first surface 120a has the second surface 120b on the cover window 110. ) Is formed on the first electrode pattern layer 150. A cross section of the first electrode pattern layer 150 is a triangle, and a vertex angle θ of the triangle is formed toward the cover window 110. In embodiments, the vertex angle θ may be 30 ° to 150 °, for example 40 ° to 120 °. It can be more free from pattern visibility in the above range.

The second transparent insulating substrate 130 may be further stacked on the second surface 120b of the transparent insulating substrate 120 on which the first electrode pattern layer 150 is formed.

2 is a cross-sectional view of an interface panel for a display according to another embodiment of the present invention. The second transparent insulating substrate has a first surface 130a in contact with the first transparent insulating substrate and a second surface 130b opposite thereto. The second electrode pattern layer 160 may be formed on the second surface 130b. Cross-sectional view of the second electrode pattern layer 160 Similar to the first electrode pattern layer 150, the cross section is a triangle, and the vertex angle θ of the triangle is formed toward the cover window 110. In this case, sizes of the first electrode pattern layer 150 and the second electrode pattern layer 160 may be the same or different.

The cover window 110 is disposed on the front surface of the display interface panel 100 to protect the display interface panel 100 and transmits light at the same time, and preferably has high transparency and heat resistance. The transparency of the cover window 110 is preferably 80% or more in visible light transmittance, and the glass transition temperature is preferably 50 ° C. or more in terms of heat resistance. In embodiments, glass, polyimide-based resin, acrylic resin, polyester-based resin, polycarbonate-based resin, epoxy-based resin, cycloolefin-based resin, or the like may be used as a material of the cover window 110. The first transparent insulating base 120 is bonded to one surface of the cover window 110, and a bonding method thereof will be described in detail in the following method of manufacturing an interface panel for a display. The bezel part 111 may be formed on the edge of the cover window 110 by a black coating on the cover window 110 to define an effective display area of the display interface panel 100.

The first transparent insulating substrate 120 and the second transparent insulating substrate 130 may include a curable resin. For example, the first transparent insulating substrate 120 and the second transparent insulating substrate 130 may include an ultraviolet curable resin or a thermosetting resin. Specifically, the first and second transparent insulating substrates may include resins such as olefin resins, epoxy resins, acrylic resins, urethane resins, silicone resins, and the like. Such a transparent insulating substrate is formed by filling and curing the resin in a fluid phase in a mold, which will be described in more detail in the following method of manufacturing an interface panel for a display.

In addition, a third transparent insulating base 140 may be laminated or bonded to the second surface 130b of the second transparent insulating base 130. The third transparent insulating base 140 may have an electrode pattern or no electrode pattern. The third transparent insulating substrate 140 on which the electrode pattern is not formed may serve as an over coat layer.

The first electrode pattern layer 150 may be arranged in a stripe shape along the first direction. In this case, the first electrode pattern layer 150 may be formed in an intaglio or embossed shape on the second surface 120b of the first transparent insulating substrate 120. In this case, when the first electrode pattern layer 150 is formed in an embossed shape, since the manufacturing method involves a complicated process such as an etching process or a photolithography process, the first electrode pattern layer 150 may be simply formed by a simpler imprinting method. The first electrode pattern layer 150 is more preferably formed in an intaglio shape.

The second electrode pattern layer 160 may be arranged in a stripe shape along a second direction different from the first direction. The second electrode pattern layer 160, together with the first electrode pattern layer 150, serves to generate an electrical signal for contact from the outside. At this time, any one of the first electrode pattern layer 150 and the second electrode pattern layer 160 detects the X-axis input coordinates, and the other detects the Y-axis input coordinates.

In an embodiment, the second electrode pattern layer 160 and the first electrode pattern layer 150 may be formed orthogonal to each other on a plane. However, the first electrode pattern layer 150 and the second electrode pattern layer 160 may be formed to have various angles according to the design purpose, in the embodiment of the present invention, the first electrode pattern layer 150 and the first electrode pattern layer 150 may be formed. The arrangement form of the two electrode pattern layer 160 is not particularly limited. The first electrode pattern layer 150 and the second electrode pattern layer 160 disposed as described above are insulated from each other by the second transparent insulating base 130.

Like the first electrode pattern layer 150, the second electrode pattern layer 160 may be formed in an intaglio or embossed form. In order to simplify the manufacturing process, reduce manufacturing cost, and compact and slim the display device, It is preferably formed in an intaglio.

In addition, while the first electrode pattern layer 150 and the second electrode pattern layer 160 are insulated by the second transparent insulating base 130, any one of the stripe patterns of the first electrode pattern layer 150 may be formed. The outermost pattern and the outermost pattern of the second electrode pattern layer 160 may be electrically connected to each other. As such, the electrically connected patterns become patterns of portions covered by the bezel part 111 when the display interface panel 100 according to an exemplary embodiment of the present invention is used as a touch panel. It is used as a metal wiring of the panel 100 and is connected to a circuit portion such as an FPCB to serve to transmit an electrical signal generated by contact from the outside to the circuit portion.

In one embodiment, the first and second electrode pattern layers have a plurality of stripe patterns having a triangular cross section, and the base w of the triangle corresponding to the line width of the stripe pattern is 0.1 to 20 μm, for example, 1 to 2. 10 μm. It has better visibility and transmittance in the above range. In addition, the vertex angle (θ) of the triangle may be 30 to 150 °.

The stripe pattern may have a distance d of 10 to 1500 μm from another stripe pattern adjacent to the same surface. It has better visibility and transmittance in the above range.

Meanwhile, the first and second electrode pattern layers may include conductive particles and a binder for fixing the conductive particles. In this case, the conductive particles, conductive metals, alloys of the metals, conductive polymers, carbon particles or a combination thereof may be used, but is not limited thereto. For example, the conductive particles may be nickel, palladium, silver, copper, gold, tin, platinum, aluminum, cobalt, indium oxide, carbon nanotubes, graphene, conductive polymers, etc., which may be used alone or in combination of two or more. It can be used in combination. The conductive particles may have an average particle size (D50) of 1 nm to 20 μm, preferably 50 nm to 15 μm. It has excellent transmittance and visibility in the above range.

In order to secure the same or more transmittance as compared with the conventional interface panel for display using ITO as a transparent electrode, the binder is most preferably made of a material having index matching with the first and second transparent insulating substrates. Preferably, the difference between the first transparent insulating substrate 120 and the refractive index of less than 1.72 is used as a lane.

11 is a plan view of an interface panel for a display according to another embodiment of the present invention. In an embodiment, the first electrode pattern layer 150 and the second electrode pattern layer 160 may each have a mesh structure. For example, the first electrode pattern layer 150 may be arranged in one column along a first direction, and the unit cells 155 formed of a plurality of line electrode patterns having a mesh structure may be arranged. In addition, the second electrode pattern layer 160 may be disposed in one column along a second direction perpendicular to the first direction, and the unit cells 165 including a plurality of line electrode patterns having a mesh structure may be arranged.

In one embodiment, the unit cells 155 and 165 may have a polygonal shape including a diamond shape, a triangle or a quadrangle. These unit cells 155 and 165 are electrically connected. In addition, each of the plurality of line electrode patterns has a triangular cross section, and a vertex of the triangle is formed toward the cover window.

The first transparent electrode pattern and the second transparent electrode pattern may be disposed in a shape perpendicular to each other.

Manufacturing Method of Interface Panel for Display

Hereinafter, a manufacturing method of an interface panel for a display according to an embodiment of the present invention will be described.

3 is a method of manufacturing an interface panel for a display according to an embodiment of the present invention. The method includes preparing a cover window (S1), stacking a first transparent insulating substrate (S2), forming a first electrode pattern layer (S3), stacking a second transparent insulating substrate (S4), and a second electrode pattern layer. It may include a forming step (S5).

First, the cover window preparation step S1 is a step of preparing the cover window 110 that is disposed on the front surface of the display interface panel 100 to protect the display interface panel 100 and transmits light at the same time. Here, in this step S1, it is preferable to prepare the cover window 110 having high transparency and heat resistance. In addition, it is preferable to prepare a cover window 110 having a visible light transmittance of 80% or more and a glass transition temperature of 50 ° C or more.

Next, referring to FIGS. 4 and 5, in the forming of the first transparent insulating substrate S2, the first transparent insulating substrate 120 having the plurality of first trenches 121 spaced apart from each other along the first direction is formed. The step of laminating on one surface of the cover window 110. In this step (S2), the upper portion of the mold 50 having the uneven pattern 51 formed on the bottom surface is covered with the cover window 110, and the resin material 125 made of a curable resin is filled. At this time, the uneven pattern 51 of the mold 50 may be formed in various forms through a known lithography method or metal processing. The resin material 125 thus filled may be cured through a curing process. The curing may be carried out through thermal curing or ultraviolet curing. As such, when the resin material 125 is cured and the mold is separated from the cured resin material, as illustrated in FIG. 5, the first transparent insulating substrate 120 having a plurality of first trenches may be formed. . The first trench 121 has a triangular cross section, and a vertex of the triangle is formed toward the cover window. The first trench 121 provides a filling space of the conductive paste forming the first electrode pattern layer 150. The first trench 121 serves to control the shape of the first electrode pattern layer 150. Since the first electrode pattern layer 150 according to the embodiment of the present invention is formed in a stripe pattern, the first trench 121 must be formed in a stripe pattern, and the shape of the first trench 121 is a mold 50. Is determined by the uneven pattern 51. In this case, the line width and the line distance of the uneven pattern 51 forming the metal wires disposed on the bezel part 111 can also be easily adjusted. As a result, the effective display area can be extended than before.

Next, referring to FIG. 6, in the forming of the first electrode pattern layer S3, the conductive paste is filled in the plurality of first trenches 121 to form the second surface 120b of the first transparent insulating substrate 120. In this step, the first electrode pattern layer 150 is formed. In this step S3, first, a conductive paste containing conductive particles and a binder is prepared as a conductive paste. Next, as shown in the drawing, the conductive paste prepared in the plurality of first trenches 121 is filled. For example, after the conductive paste is applied to the second surface 120b of the first transparent insulating substrate 120 on which the first trench 121 is formed using a doctor blade, the first transparent insulating layer other than the first trench 121 may be coated. If the conductive paste applied to the second surface 120b of the substrate 120 is scraped off or removed by a separate means, the conductive paste may be filled only in the first trench 121. Through such a method, the surface of the conductive paste filled in the first trench 121 may be planarized at the same time. As another example, the conductive paste may be filled only in the first trench 121 from the beginning using an injection means such as a nozzle. Then, when the conductive paste is cured, a first electrode pattern layer 150 having a triangular cross section of a stripe pattern is formed on the second surface 120b of the first transparent insulating substrate 120.

Next, referring to FIGS. 7 and 8, in the stacking of the second transparent insulating substrate S4, the second transparent insulating substrate 130 having the plurality of second trenches 131 spaced apart from each other along the second direction may be formed. The step of laminating on the second surface 120b of the first transparent insulating substrate 120. In this step (S4), the upper surface of the mold 50 having the concave-convex pattern 51 formed on the bottom surface of the second surface on which the first electrode pattern layer 150 of the first transparent insulating substrate 120 is formed ( 120b), the resin material 125 which consists of curable resin is filled. In this case, the resin material 125 may be the same as the resin material 125 used when the first transparent insulating base 120 is formed. In addition, the uneven pattern 51 of the mold 50 may be formed in various forms through silicon wafer processing or mechanical processing such as a known lithography method. The mold 50 used in this step S4 may have a first transparent insulating property. It may be the same as or different from the mold 50 used in the substrate stacking step (S2). As such, when the resin material 125 is cured and then the mold 50 is separated from the cured resin material, as illustrated in FIG. 8, a second trench () is formed on the lower surface of the second transparent insulating base material 130. 131 is formed.

Next, referring to FIG. 9, in the forming of the second electrode pattern layer 160 (S5), the conductive paste is filled in the plurality of second trenches 131 to fill the second transparent insulating substrate 130 with the second electrode. The pattern layer 160 is formed. This step S5 is performed in the same process as the first electrode pattern layer forming step S3. In this case, a second electrode pattern layer 160 having a stripe pattern orthogonal to or intersecting with the stripe pattern of the first electrode pattern layer 150 is formed on the bottom surface of the second transparent insulating substrate 130.

The display interface panel of the present invention can be manufactured by various methods in addition to the above method. For example, the electrode pattern may be pad printing, in-printing, plating, offset printing, screen printing, photolithography, deep fan nanolithography, offset lithography, letter press, inkjet printing, gravure printing, flexographic, etc. It may be formed by applying. The formation of the first or second trenches may also be formed by physical or chemical etching.

12 to 14 are cross-sectional views schematically showing a method of manufacturing an interface panel for a display according to another embodiment of the present invention.

12A and 12B, a first electrode pattern layer 150 arranged in a first direction is formed on a substrate 310, wherein the first electrode pattern layer has a triangular cross section. And the vertex angle of the triangle is formed toward the cover window.

A first transparent insulating substrate 120 is formed on the first electrode pattern layer 150.

In an embodiment, the first electrode pattern layer 150 may have a stripe-shaped pattern, and may include at least one conductive layer pattern 151 arranged in parallel with each other in a first direction of the substrate 310. have.

The conductive layer pattern 151 may have a line shape, but is not limited thereto, and may have various shapes as long as the conductive layer pattern 151 satisfies a condition arranged along the first direction of the substrate 310. In one embodiment, the plurality of conductive layer patterns 151 may be connected to the channel 152 by a predetermined number of electrical bundles. The channel 152 may be formed by various printing methods together with the conductive layer pattern 151. In one embodiment, the channel 152 may extend to the wiring area of the display interface panel. In another embodiment, the channel 152 may function as a wiring electrode layer in the wiring region.

In another embodiment, the first electrode pattern layer 150 may have a mesh structure as shown in FIG. 11. For example, the first electrode pattern layer 150 may be arranged in one column along a first direction, and the unit cells 155 formed of a plurality of line electrode patterns having a mesh structure may be arranged. These unit cells 155 may have a polygonal shape including a diamond shape, a triangle, a rectangle, or the like. These unit cells 155 and 165 are electrically connected to each other, and each of the plurality of line electrode patterns has a triangular cross section, and a vertex of the triangular triangle is formed toward the cover window.

The first transparent insulating substrate 120 may have substantially the same light transmitting characteristics as the binder constituting the first electrode pattern layer 150.

Referring to FIGS. 13A and 13B, a second electrode pattern layer 160 having a stripe shape is arranged on a first transparent insulating substrate 120 in a second direction different from the first direction. Form. As shown, the second direction may be perpendicular to the first direction.

In addition, as shown, the second electrode pattern layer 160 has a stripe-shaped pattern, the cross section is triangular, and the vertex of the triangle is formed toward the cover window.

The second electrode pattern layer 160 may include at least one conductive layer pattern 161 arranged in parallel with each other in a second direction. The conductive layer pattern 161 may have a line shape, but is not limited thereto and may have various shapes as long as the conductive layer pattern 161 satisfies a condition arranged along the second direction of the substrate 310. In one embodiment, the plurality of conductive layer patterns 161 may be connected to the channel 162 by a predetermined number of electrical bundles. The channel 162 may be formed together with the conductive layer pattern 161 by pad printing. In one embodiment, the channel 162 may extend to the wiring area of the display interface panel. In another embodiment, the channel 162 may function as a wiring electrode layer in the wiring region.

In another embodiment, the second electrode pattern layer 160 may have a mesh structure as shown in FIG. 11. For example, the second electrode pattern layer 160 may be arranged in one column along a second direction, and unit cells 165 including a plurality of line electrode patterns having a mesh structure may be arranged. These unit cells 165 may have a polygonal shape including a diamond shape, a triangle, a rectangle, or the like. These unit cells 165 are electrically connected, and each of the plurality of line electrode patterns has a triangular cross section, and a vertex of the triangle is formed toward the cover window.

The channel 162 of the second electrode pattern layer 160 and the channel 152 of the first electrode pattern layer 150 may transfer an electrostatic coupling signal generated according to a user's touch to an external chip. The external chip can calculate the user touch position according to the algorithm.

Referring to FIGS. 14A and 14B, a second transparent insulating substrate is formed on the second electrode pattern layer 160. The second transparent insulating base 130 may have substantially the same light transmitting characteristics as the binder constituting the second electrode pattern layer 160. Therefore, the light passing through the second transparent insulating substrate 130 may be suppressed from the interface with the second conductive layer pattern 160.

The second transparent insulating base 130 may be in contact with the cover window.

The display interface panel having the triangular cross-sectional electrode pattern of the present invention has excellent visibility. That is, while the electrode pattern having a rectangular cross section shown in FIG. 10 is visually recognized by reflection, the electrode pattern of a triangular cross section formed with the vertex angle toward the cover window as shown in FIG. Pattern visibility can be improved by scattering.

The display interface panel of the present invention may be, for example, a touch screen panel attached to the front of the display to receive a user's touch input.

As described above, although the present invention has been described with reference to the limited embodiments and the drawings, the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below but also by the equivalents of the claims.

Claims (20)

Cover window; A first transparent insulating substrate having a first surface in contact with the cover window and a second surface opposite thereto; And A first electrode pattern layer formed on a second surface of the first transparent insulating substrate; Including, The cross-section of the first electrode pattern layer is a triangle, wherein the vertex angle of the triangle is formed toward the cover window. The method of claim 1, A second transparent insulating substrate is further laminated on the first transparent insulating substrate; The second transparent insulating substrate has a first surface in contact with the first transparent insulating substrate and a second surface opposite thereto, A second electrode pattern layer is formed on a second surface of the second transparent insulating base material; The cross-section of the second electrode pattern layer is a triangle, wherein the vertex of the triangle is formed toward the cover window. The method of claim 2, The first electrode pattern layer is arranged in a stripe shape along the first direction, The second electrode pattern layer is arranged in a stripe shape along a second direction different from the first direction, The first and second electrode pattern layers each have a plurality of stripe patterns each having a triangular cross section, The base side of the triangle (w) is 0.1 to 20 ㎛, vertex angle of 30 to 150 ° display panel. The method of claim 3, The electrode pattern is selected from the group consisting of pad printing, in-printing, plating, offset printing, screen printing, photolithography, deep fan nanolithography, offset lithography, letter press, inkjet printing, gravure printing and flexographic. An interface panel for display formed by the selected printing method. The method of claim 3, The stripe pattern has a distance (d) of 10 to 1500 ㎛ with another stripe pattern adjacent to the same surface. The method of claim 3, Any one of the stripe pattern of the first electrode pattern layer and any one of the stripe pattern of the second electrode pattern layer is electrically connected. The method of claim 2, And the first electrode pattern layer and the second electrode pattern layer include conductive particles and a binder to fix the conductive particles. The method of claim 6, The conductive particle is a display panel including a conductive metal, an alloy of the metal, a conductive polymer, carbon particles or a combination thereof. The method of claim 6, The conductive particles have an average particle size (D50) of 1 nm to 20 ㎛ display panel. The method of claim 6, The binder has a difference in refractive index between the first and second transparent insulating substrates within 1.72. The method of claim 2, The first transparent insulating substrate and the second transparent insulating substrate comprises a curable resin. The method of claim 1, And a bezel portion defining an effective display area at an edge of the cover window. (a) preparing a cover window; (b) forming a first transparent insulating substrate having a plurality of first trenches spaced apart from each other along a first direction on the cover window; (c) filling a conductive paste into the plurality of first trenches to form a first electrode pattern layer on the first transparent insulating substrate; Including; The first trench has a triangular cross section, and a vertex of the triangle is formed toward the cover window. The method of claim 13, (d) stacking a second transparent insulating substrate having a plurality of second trenches spaced apart from each other along a second direction on the first transparent insulating substrate; And (e) filling the conductive paste into the plurality of second trenches to form a second electrode pattern layer on the second transparent insulating substrate; More, And wherein the second trench has a triangular cross section and a vertex of the triangle faces the cover window. The method of claim 13, wherein step (b) comprises: Covering the upper part of the mold having the concave-convex pattern formed on the bottom surface with the cover window, and then filling the resin material including the curable resin; Curing the resin material, and Separating the mold from the cured resin material, Method of manufacturing an interface panel for a display comprising a. The method of claim 14, Step (c) and step (e) are each, Filling a conductive paste including conductive particles and a binder in the plurality of first trenches or the plurality of second trenches, and Curing the conductive paste, Method of manufacturing an interface panel for a display comprising a. The method of claim 15, In step (d), Covering the upper part of the mold having the concave-convex pattern formed on the bottom surface with the surface on which the first electrode pattern layer of the first transparent insulating substrate is formed, and then filling the resin material including the curable resin; Curing the resin material, and Separating the mold from the cured resin material, Method of manufacturing an interface panel for a display comprising a. The method according to any one of claims 15 and 17, The uneven pattern is a method of manufacturing an interface panel for a display formed through lithography or metal processing. Preparing a substrate;  Forming a first electrode pattern layer having a stripe shape arranged along one direction of the substrate; And  Forming a first resin layer formed of a transparent insulating substrate on the first electrode pattern layer; The first electrode pattern layer has a triangular cross section, and a vertex of the triangle is formed toward the cover window. 20. The method of claim 19, further comprising: forming a second electrode pattern layer having a stripe shape arranged on the first resin layer in a second direction different from the first direction; And Forming a second resin layer made of a transparent insulating substrate on the second electrode pattern layer, The second electrode pattern layer has a triangular cross section, and a vertex of the triangle is formed toward the cover window.

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