KR102313957B1 - Touch window - Google Patents

Abstract

A touch window according to an embodiment includes: a substrate including an effective area and an ineffective area; sensing units and wiring units alternately arranged on the effective area; and a ground electrode disposed on the effective area.

Description

touch window {TOUCH WINDOW}

Embodiments relate to touch windows.

Recently, in various electronic products, a touch window for inputting an image by contacting an input device such as a finger or a stylus to an image displayed on a display device has been applied.

The touch window may be typically divided into a resistive touch window and a capacitive touch window. The resistive touch window detects a position by detecting a change in resistance according to the connection between electrodes when pressure is applied to the input device. In the capacitive touch window, a position is detected by detecting a change in capacitance between electrodes when a finger touches the window. In consideration of the convenience and sensing power of the manufacturing method, the capacitive method has recently been attracting attention for small models.

The touch window may detect a position by arranging a sensing electrode and a wiring electrode connected to the sensing electrode on a substrate, and sensing a change in capacitance when a region in which the sensing electrode is disposed is touched.

In this case, the sensing electrode and the wiring electrode may be disposed on one surface of the substrate using one substrate or may be disposed on one surface of each substrate using a plurality of substrates.

When the sensing electrode and the wiring electrode are disposed on one surface of the substrate using a single substrate, the wiring electrode may be drawn out in various directions. For example, the wiring electrode may be disposed extending from an effective area to an ineffective area. .

Also, depending on a method of arranging the sensing electrode and the wiring electrode, there may be a portion where the distance between the sensing electrodes is widened and a portion where the distance between the sensing electrodes is narrowed on the substrate, and there is a problem in that a short circuit occurs between the sensing electrodes at the narrowing portion.

Accordingly, there is a need for a touch window having a new structure capable of solving the above problems.

The embodiment is intended to provide a touch window having improved reliability.

A touch window according to an embodiment includes: a substrate including an effective area and an ineffective area; sensing units and wiring units alternately arranged on the effective area; and a ground electrode disposed on the effective area.

In the touch window according to the embodiment, a ground electrode may be disposed on an effective area of a substrate in which the width of the sensing units is narrowed.

Accordingly, it is possible to prevent the sensing electrodes from migrating at a portion where the widths of the sensing units are narrowed by the ground electrode, so that the different sensing electrodes come into contact with each other, thereby preventing a short circuit.

Accordingly, the touch window according to the embodiment may have improved reliability.

1 is a view for explaining positions of a sensing unit and a wiring unit of a touch window according to an embodiment.
2 is a diagram illustrating a plan view of a touch window according to an embodiment.
FIG. 3 is an enlarged view of area A of FIG. 2 .
4 is a diagram illustrating another plan view of a touch window according to an embodiment.
FIG. 5 is an enlarged view of area B of FIG. 4 .
6 to 8 are diagrams for explaining an electrode formation process of a sensing electrode and/or a wiring electrode according to an embodiment.
9 is a diagram illustrating a touch device in which a touch window and a display panel are coupled according to an exemplary embodiment.
10 to 13 are diagrams illustrating an example of a touch device apparatus to which a touch device according to an embodiment is applied.

In the description of embodiments, each layer (film), region, pattern or structure is “on” or “under” the substrate, each layer (film), region, pad or patterns. The description of being formed in " includes all those formed directly or through another layer. The standards for the upper/above or lower/lower layers of each layer will be described with reference to the drawings.

In addition, when it is said that a certain part is "connected" with another part, it includes not only the case where it is "directly connected" but also the case where it is "indirectly connected" with another member interposed therebetween. In addition, when a part "includes" a certain component, this means that other components may be further provided without excluding other components unless otherwise stated.

In the drawings, the thickness or size of each layer (film), region, pattern, or structure may be changed for clarity and convenience of description, and thus does not fully reflect the actual size.

Hereinafter, a touch window according to an embodiment will be described with reference to FIGS. 1 to 5 .

1 to 5 , the touch window according to the embodiment may include a substrate, a sensing electrode, a wiring electrode, a ground electrode, and a printed circuit board.

The substrate 100 may be rigid or flexible.

For example, the substrate 100 may include glass or plastic. In detail, the substrate 100 may include chemically strengthened/semi-tempered glass such as soda lime glass or aluminosilicate glass, or polyimide (PI), polyethylene terephthalate (PET). , propylene glycol (PPG), reinforced or soft plastic such as polycarbonate (PC), or may include sapphire.

In addition, the substrate 100 may include a photoisotropic film. For example, the substrate 100 may include Cyclic Olefin Copolymer (COC), Cyclic Olefin Polymer (COP), photoisotropic polycarbonate (PC), or photoisotropic polymethyl methacrylate (PMMA).

Sapphire has excellent electrical properties such as dielectric constant, so it can dramatically increase the touch response speed, and it can easily implement spatial touch such as hovering, and has high surface strength, so it can be applied as a cover substrate. Here, hovering refers to a technique for recognizing coordinates even at a distance slightly away from the display.

Also, the substrate 100 may be bent while having a partially curved surface. That is, the substrate 100 may be bent while having a partially flat surface and a partially curved surface. In detail, the end of the substrate 100 may be curved while having a curved surface, or may have a surface including a random curvature and may be curved or bent.

In addition, the substrate 100 may be a flexible substrate having a flexible characteristic.

Also, the substrate 100 may be a curved or bent substrate. That is, the touch window including the substrate 100 may also be formed to have flexible, curved, or bent characteristics. For this reason, the touch window according to the embodiment is easy to carry and can be changed into various designs.

The substrate 100 may include a cover substrate. Alternatively, a separate cover substrate may be further disposed on the substrate 100 . In addition, when a separate cover substrate is further disposed on the substrate 100 , the substrate and the cover substrate may be laminated through an adhesive layer. Accordingly, since the cover substrate and the substrate may be separately formed, it may be advantageous in mass production of the touch window.

An effective area AA and an ineffective area UA may be defined in the substrate 100 .

A display may be displayed in the effective area AA, and a display may not be displayed in the ineffective area UA disposed around the effective area AA.

In addition, the position of the input device (eg, a finger or a stylus pen) may be sensed in at least one of the effective area AA and the ineffective area UA. When an input device such as a finger is in contact with such a touch window, a difference in capacitance occurs at a portion in contact with the input device, and the portion in which the difference occurs may be detected as a contact position.

An outer dummy layer (not shown) may be disposed on the ineffective area UA.

The outer dummy layer may be formed by coating a material having a predetermined color so that the wiring electrode disposed on the ineffective region and the printed circuit board connecting the wiring electrode to an external circuit cannot be seen from the outside. .

The outer dummy layer may have a color suitable for a desired appearance, for example, black or white including black or white pigment. Alternatively, various color films such as red and blue may be expressed using various color films.

In addition, a desired logo or the like can be formed on the outer dummy layer in various ways. The outer dummy layer may be formed by deposition, printing, wet coating, or the like.

The outer dummy layer may be disposed in at least one layer or more. For example, the outer dummy layer may be disposed as one layer or at least two layers having different widths.

In addition, the outer dummy layer may be formed of a film. Accordingly, when the substrate 100 is flexible or has a curvature, an outer dummy layer can be easily formed on the cover substrate.

The outer dummy layer may be disposed on at least one of one surface and the other surface of the substrate.

Referring to FIG. 1 , a sensing unit 200 and a wiring unit 300 may be disposed on the substrate 100 . In detail, the sensing unit 200 may be a region in which a sensing electrode is disposed, and the wiring unit 300 may be a region in which a wiring electrode is disposed.

The sensing unit 200 and the wiring unit 300 may be disposed on the effective area AA of the substrate. That is, the sensing electrode and the wiring electrode may be disposed on the effective area AA of the substrate.

2 to 4 , a sensing electrode may be disposed on the sensing unit 200 .

The sensing electrode may include a first sensing electrode 210 and a second sensing electrode 220 . In detail, the sensing electrode may include the first sensing electrode 210 and the second sensing electrode 220 disposed on the same surface of the substrate 100 .

The first sensing electrode 210 and the second sensing electrode 220 may be disposed to be spaced apart from each other. That is, the first sensing electrode 2100 and the second sensing electrode 220 may be disposed to be spaced apart from each other on the same surface of the substrate 100 .

Accordingly, the first sensing electrode 210 and the second sensing electrode 220 may be disposed together on the same substrate. Accordingly, compared to disposing each sensing electrode on a separate substrate, the overall thickness of the touch window may be reduced.

At least one sensing electrode of the first sensing electrode 210 and the second sensing electrode 220 may include a transparent conductive material so that electricity can flow without interfering with the transmission of light.

For example, at least one of the first sensing electrode 210 and the second sensing electrode 220 may include indium tin oxide, indium zinc oxide, or copper oxide. ), tin oxide (tin oxide), zinc oxide (zinc oxide), may include a metal oxide such as titanium oxide (titanium oxide). Accordingly, when manufacturing the flexible and/or bending touch window, the degree of freedom may be improved.

Alternatively, at least one sensing electrode of the first sensing electrode 210 and the second sensing electrode 220 may be a nanowire, a photosensitive nanowire film, a carbon nanotube (CNT), graphene, a conductive polymer, or mixtures thereof may be included. Accordingly, when manufacturing the flexible and/or bending touch window, the degree of freedom may be improved.

When a nano-composite such as nanowire or carbon nanotube (CNT) is used, it can be configured in black, and has the advantage of being able to control color and reflectance while securing electrical conductivity by controlling the content of nanopowder.

Alternatively, at least one of the first sensing electrode 210 and the second sensing electrode 220 may include various metals. For example, the sensing electrode 200 is chromium (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), molybdenum (Mo). At least one of gold (Au), titanium (Ti), and alloys thereof may be included. Accordingly, when manufacturing the flexible and/or bending touch window, the degree of freedom may be improved.

The sensing electrode may be disposed in a mesh shape. For example, at least one of the first sensing electrode 210 and the second sensing electrode 220 may be disposed in a mesh shape.

The sensing electrode may include a plurality of sub-electrodes disposed to cross each other, and the sensing electrode may be disposed in a mesh shape as a whole by these sub-electrodes.

Since the sensing electrode has a mesh shape, the pattern of the sensing electrode may not be visible on the effective area AA. That is, even if the sensing electrode is formed of a metal, the pattern may be invisible. In addition, even when the sensing electrode is applied to a large-sized touch window, the resistance of the touch window may be lowered.

Referring to FIG. 2 , the sensing electrode may include a mesh line LA formed by a plurality of sub-electrodes crossing each other. Also, the sensing electrode 200 may include a mesh opening OA between the mesh lines LA.

The line width of the mesh line LA may be about 0.1 μm to about 10 μm. A mesh line having a line width of less than about 0.1 μm may be impossible in a manufacturing process, and when it exceeds about 10 μm, the sensing electrode pattern may be visually recognized from the outside, thereby reducing visibility. Alternatively, the line width of the mesh line LA may be about 1 μm to about 5 μm. Alternatively, the line width of the mesh line LA may be about 1.5 μm to about 3 μm.

In addition, the thickness of the mesh line LA may be about 100 nm to about 500 nm. If the thickness of the mesh wire LA is less than about 100 nm, the electrode resistance may be increased and electrical properties may be deteriorated, and if it exceeds about 500 nm, the overall thickness of the touch window may be thickened and process efficiency may be reduced have. Preferably, the thickness of the sensing electrode mesh line LA' may be about 150 nm to about 200 nm. More preferably, the thickness of the mesh line LA may be about 180 nm to about 200 nm.

A wiring electrode may be disposed on the wiring unit 300 .

The wire electrode may include a first wire electrode 310 and a second wire electrode 320 . In detail, the wiring electrode may include the first wiring electrode 310 and the second wiring electrode 320 disposed on the same surface of the substrate 100 .

The first wire electrode 310 and the second wire electrode 320 may include a conductive material. For example, the first wire electrode 310 and the second wire electrode 320 may include the same or similar material to the above-described sensing electrode.

Also, the first wire electrode 310 and the second wire electrode 320 may be disposed in a mesh shape like the above-described sensing electrode.

The first wiring electrode 310 and the second wiring electrode 320 are respectively connected to the first sensing electrode 210 and the second sensing electrode 220 on the effective area AA of the substrate 100 . and can be placed.

The printed circuit board 400 may be connected to the wiring electrode. For example, the first wiring electrode 310 and the second wiring electrode 320 may be connected to the printed circuit board 400 on the ineffective area UA of the substrate 100 .

Accordingly, one end of the first wiring electrode 310 is connected to the first sensing electrode 210 on the effective area AA, and the other end of the first wiring electrode 310 is connected to the non-effective area UA. ) may be connected to the printed circuit board 400 on the.

In addition, one end of the second wiring electrode 320 is connected to the second sensing electrode 220 on the effective area AA, and the other end of the second wiring electrode 320 is in the non-effective area UA. It may be connected to the printed circuit board 400 on the top.

That is, the first wire electrode 310 and the second wire electrode 320 may extend from the effective area to the ineffective area and may be connected to the printed circuit board 400 .

A driving chip may be mounted on the printed circuit board 400 , and may be connected to the wiring electrode connected to the sensing electrode to perform an operation according to a touch signal sensed by the sensing electrode.

In addition, the printed circuit board 400 may include a flexible printed circuit board (FPCB).

The sensing unit 200 and the wiring unit 300 may be alternately disposed on the effective area AA of the substrate. That is, a plurality of sensing units 200 and a plurality of wiring units 300 may be disposed on the effective area AA of the substrate, and the sensing unit 200 and the wiring unit 300 are alternately arranged. can be placed.

Referring to FIG. 1 , a plurality of sensing units and a plurality of wiring units may be disposed on the effective area AA of the substrate. For example, the first sensing unit 200a, the second sensing unit 200b, the third sensing unit 200c, and the fourth sensing unit 200d may be disposed on the effective area AA of the substrate.

Also, a first wiring unit 300a, a second wiring unit 300b, a third wiring unit 300c, and a fourth wiring unit 300d may be disposed on the effective area AA of the substrate.

As the sensing unit and the wiring unit are alternately arranged, the first wiring unit 300a is disposed between the first sensing unit 200a and the second sensing unit 200b, and the second wiring unit ( 300b) is disposed between the second sensing unit 200b and the third sensing unit 200c, and the third wiring unit 300c includes the third sensing unit 200c and the fourth sensing unit 200d. ) can be placed between

The width W1 of the sensing unit 200 may increase as the distance from the printed circuit board 400 increases. In addition, the width W2 of the wiring part 300 may become smaller as it moves away from the printed circuit board 400 .

For example, the sensing unit 200 may have a triangular shape that decreases in width as it moves away from the printed circuit board 400 , and the wiring unit 300 increases as the distance from the printed circuit board 400 increases. It may have a triangular shape that increases in width. That is, the combination of the sensing unit 200 and the wiring unit 300 may be a rectangular shape as a whole.

A distance d1 between the first sensing unit 200a and the second sensing unit 200b, a distance d2 between the second sensing unit 200b and the third sensing unit 200c, and the The distance d3 between the third sensing unit 200c and the fourth sensing unit 200d may decrease as the distance from the printed circuit board increases.

Conversely, a distance D1 between the first wiring unit 300a and the second wiring unit 300b, a distance D2 between the second wiring unit 300b and the third wiring unit 300c, and The distance D3 between the third wiring part 300c and the fourth wiring part 300d may increase as the distance from the printed circuit board increases.

The ground electrode 500 may be disposed on the substrate 100 . For example, the ground electrode 500 may be disposed on the effective area AA of the substrate.

The ground electrode 500 may include a first ground electrode 510 and a second ground electrode.

The first ground electrode 510 may be disposed at an edge of the effective area AA of the substrate.

1 to 4 , the effective area AA may include first to fourth edges connected to each other. In detail, the effective area AA includes a first edge 110 facing the printed circuit board 400 , a fourth edge 140 disposed opposite to the first edge 110 , and the first edge. A second edge 120 and a third edge 130 connecting 110 and the fourth edge 140 may be included.

The first ground electrode 510 may be disposed on the fourth edge 140 .

The first ground electrode 510 may extend from the second edge 120 to the third edge 130 and be disposed on the fourth edge 140 .

The second ground electrode 520 may be disposed between the sensing units in the effective area AA of the substrate.

For example, the second ground electrode 520 may be disposed between the first sensing unit 200a and the second sensing unit 200b, and between the second sensing unit 200b and the third sensing unit 200c. and between the third sensing unit 200c and the fourth sensing unit 200d.

The second ground electrode 520 may be disposed to extend from the fourth edge 140 to the first edge 110 .

1 and 2 , the second ground electrode 520 is disposed between the first sensing unit 200a and the second sensing unit 200b, the second sensing unit 200b and the third It extends from the fourth edge 140 to the first edge 110 and may be partially disposed between the sensing unit 200c and between the third sensing unit 200c and the fourth sensing unit 200d. have.

Alternatively, referring to FIGS. 3 and 4 , the second ground electrode 520 is disposed between the first sensing unit 200a and the second sensing unit 200b, between the second sensing unit 200b and the second sensing unit 200b. Between the third sensing unit 200c and between the third sensing unit 200c and the fourth sensing unit 200d, it extends from the fourth edge 140 to the first edge 110 in the direction of the first It may be arranged to extend to the edge.

The first ground electrode 510 and the second ground electrode 520 may include the same or similar material to the above-described sensing electrode or the wiring electrode.

Also, the first ground electrode 510 and the second ground electrode 520 may be disposed to have a width equal to or similar to that of the wiring electrode.

Also, the first ground electrode 510 and the second ground electrode 520 may be connected to each other. That is, the first ground electrode 510 and the second ground electrode 520 may be integrally formed.

In the touch window according to the embodiment, a ground electrode may be disposed between the sensing units. Accordingly, it is possible to prevent migration from occurring between the sensing electrodes adjacent to the fourth edge.

That is, depending on the shape of the sensing unit and the wiring unit, sensing electrodes adjacent to the fourth edge of the effective area may be disposed adjacent to each other, and accordingly, the ionized metal between the sensing electrodes moves to the cathode and forms a dendritic layer into the anode. Migration that grows in a shape may occur, and accordingly, a short may occur due to migration between sensing electrodes adjacent to each other, and thus the efficiency and reliability of the touch panel may be deteriorated.

Accordingly, in the touch window according to the embodiment, migration between the sensing electrodes may be prevented from occurring by disposing the ground electrode between the sensing units.

Accordingly, the touch window according to the embodiment may prevent a short circuit between the sensing electrodes, thereby improving overall reliability.

5 to 7 are views for explaining an electrode forming process of a sensing electrode and/or a wiring electrode according to an embodiment.

Referring to FIG. 5 , the sensing electrode and/or the wiring electrode according to the embodiment is a mesh-shaped electrode by disposing a metal layer M on the entire surface of the substrate 100 and etching the metal layer M in a mesh shape. can form. For example, after depositing a metal layer (M) such as copper (Cu) on the entire surface of the substrate 100 such as polyethylene terephthalate (PET), etc., the copper layer is etched to form an embossed mesh shape. A copper metal mesh electrode can be formed.

Alternatively, referring to FIG. 6 , in the sensing electrode and/or the wiring electrode according to the embodiment, a resin layer (R) including a UV resin or a thermosetting resin layer is formed on the substrate 100, and then the resin layer (R) ) after forming a mesh-shaped engraved pattern P on the engraved pattern may be filled with a metal paste (MP) in the engraved pattern. In this case, the engraved pattern of the resin layer may be formed by imprinting a mold having the embossed pattern.

The metal paste 340 may be a metal paste including at least one of Cr, Ni, Cu, Al, Ag, Mo, and alloys thereof. Accordingly, by filling the metal paste in the intaglio pattern P of the mesh shape and then curing, it is possible to form a metal mesh electrode in the intaglio mesh shape.

Alternatively, referring to FIG. 7 , in the sensing electrode and/or the wiring electrode according to the embodiment, a resin layer (R) including a UV resin or a thermosetting resin layer is formed on the substrate 100, and then the resin layer (R) ), after forming a mesh-shaped embossed nano-pattern and micro-pattern, the metal can be sputtered on the resin layer.

In this case, the embossed pattern of the nano-pattern and the micro-pattern may be formed by imprinting a mold having the engraved pattern.

Next, by etching the metal layer M formed on the nanopattern P1 and the micropattern P1 to remove only the metal layer formed on the nanopattern, and leaving only the metal layer formed on the micropattern, a mesh-shaped metal electrodes can be formed.

In this case, when the metal layer is etched, a difference in etching rate may occur according to a difference in bonding area between the nanopattern 211 and the micropattern 212 and the metal layer. That is, since the bonding area of the micropattern and the metal layer is larger than the bonding area of the nanopattern and the metal layer, the etching of the metal layer M formed on the micropattern occurs less, and according to the same etching rate, the metal layer M formed on the micropattern is formed. As the metal layer remains and the metal layer formed on the nano-pattern is etched and removed, a micro-pattern embossed mesh-shaped metal electrode may be formed on the substrate 100 .

The sensing electrode and/or the wiring electrode of the touch window according to the embodiment may be formed of a mesh-shaped electrode including a metal layer as shown in FIGS. 5 to 7 described above.

Hereinafter, a touch device in which the aforementioned touch window and the display panel are combined will be described with reference to FIG. 8 .

Referring to FIG. 8 , the touch device according to the embodiment may include a display panel 800 and a touch window disposed on the display panel. For example, the display panel and the touch window may be bonded to each other through an adhesive layer 700 including an optically clear adhesive (OCA).

For example, in FIG. 8 , a cover substrate 101 and a substrate 100 are included, and the cover substrate 101 and the substrate 100 are adhered through an adhesive layer 700 , and are formed on the substrate 100 . Although the first sensing electrode 210 and the second sensing electrode 220 are provided to be spaced apart from each other and the display panel 800 is bonded to each other through the adhesive layer 700, the embodiment is not limited thereto, The cover substrate 101 may be omitted.

When the display panel 800 is a liquid crystal display panel, the display panel 800 includes a first substrate 810 including a thin film transistor (TFT) and a pixel electrode and a second substrate 810 including color filter layers. ' The substrate 820 may be formed in a bonded structure with a liquid crystal layer interposed therebetween.

In addition, in the display panel 800 , a thin film transistor, a color filter, and a black matrix are formed on a first substrate 810 , and a second substrate 820 is formed on the first substrate 810 with a liquid crystal layer interposed therebetween. ) and may be a liquid crystal display panel having a color filter on transistor (COT) structure. That is, a thin film transistor may be formed on the first substrate 810 , a protective film may be formed on the thin film transistor, and a color filter layer may be formed on the protective film. Also, a pixel electrode in contact with the thin film transistor is formed on the first substrate 810 . In this case, in order to improve the aperture ratio and simplify the mask process, the black matrix may be omitted, and the common electrode may also serve as the black matrix.

Also, when the display panel 800 is a liquid crystal display panel, the display device may further include a backlight unit that provides light from a rear surface of the display panel 800 .

When the display panel 800 is an organic light emitting display panel, the display panel 800 may include a self-luminous device that does not require a separate light source. In the display panel 800 , a thin film transistor may be formed on a first substrate 810 , and an organic light emitting diode contacting the thin film transistor may be formed. The organic light emitting device may include an anode, a cathode, and an organic light emitting layer formed between the anode and the cathode. In addition, a second 'substrate 820 serving as an encapsulation substrate for encapsulation may be further included on the organic light emitting device.

Hereinafter, an example of a display device to which a touch window according to the above-described embodiments is applied will be described with reference to FIGS. 9 to 12 .

Referring to FIG. 9 , as an example of a touch device apparatus, a mobile terminal is illustrated. The mobile terminal may include an effective area (AA) and an invalid area (UA). The effective area AA may sense a touch signal by a touch of a finger, and a command icon pattern unit and a logo may be formed in the ineffective area.

Referring to FIG. 10 , the touch window may include a flexible touch window that is bent. Accordingly, a touch device apparatus including the same may be a flexible touch device apparatus. Accordingly, the user can bend or bend it by hand.

Referring to FIG. 11 , such a touch window may be applied not only to a touch device such as a mobile terminal, but also to a car navigation system.

Also, referring to FIG. 12 , such a touch window may be applied in a vehicle. That is, the touch window may be applied to various parts within the vehicle to which the touch window may be applied. Accordingly, it is applied to not only a personal navigation display (PND), but also a dashboard, etc. to implement a center information display (CID). However, the embodiment is not limited thereto, and it goes without saying that such a touch device may be used in various electronic products.

Features, structures, effects, etc. described in the above-described embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to one embodiment. Furthermore, features, structures, effects, etc. illustrated in each embodiment can be combined or modified for other embodiments by those of ordinary skill in the art to which the embodiments belong. Accordingly, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

In addition, although the embodiments have been described above, these are merely examples and do not limit the present invention, and those of ordinary skill in the art to which the present invention pertains are exemplified above in a range that does not depart from the essential characteristics of the present embodiment. It can be seen that various modifications and applications that have not been made are possible. For example, each component specifically shown in the embodiments may be implemented by modification. And the differences related to these modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

Claims (13)

a substrate comprising an effective area and an ineffective area;
a printed circuit board disposed on the ineffective area;
at least one sensing unit and at least one wiring unit alternately disposed on the effective area; and
a ground electrode disposed on the effective area;
The width of the sensing unit increases as it moves away from the printed circuit board.
The sensing unit includes a first sensing unit and a second sensing unit spaced apart from each other,
The distance between the first sensing unit and the second sensing unit decreases as the distance from the printed circuit board decreases,
The ground electrode is disposed in an area where the distance between the first sensing unit and the second sensing unit is smallest. The method of claim 1,
A sensing electrode is disposed on the sensing unit,
A touch window in which a wire electrode connected to the sensing electrode is disposed on the wire part. 3. The method of claim 2,
One end of the wiring electrode is connected to the sensing electrode,
The other end of the wiring electrode is a touch window connected to a printed circuit board. delete delete delete The method of claim 1,
The width of the wiring portion becomes smaller as the distance from the printed circuit board increases. The method of claim 1,
The effective area is
a first edge facing the printed circuit board;
a fourth edge disposed opposite to the first edge; and
and second and third edges connecting the first edge and the fourth edge. 9. The method of claim 8,
The ground electrode is
a first ground electrode disposed on the fourth edge; and
and a second ground electrode disposed between the first sensing unit and the second sensing unit. 10. The method of claim 9,
A touch window in which the first ground electrode and the second ground electrode are integrally formed. 3. The method of claim 2,
At least one of the sensing electrode and the wiring electrode is a touch window disposed in a mesh shape. 3. The method of claim 2,
The sensing electrode includes a first sensing electrode and a second sensing electrode spaced apart from each other,
The first sensing electrode and the second sensing electrode are disposed on the same surface of the touch window. 3. The method of claim 2,
and the wiring electrode extends from the effective area to the ineffective area.

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