KR102187469B1 - Touch window - Google Patents

Abstract

A touch window according to an embodiment of the present invention includes a substrate; And an electrode portion disposed on a substrate in a mesh shape, wherein the electrode portion includes: a main pattern and a sensing electrode disposed on the main pattern to sense a position; And an antireflection layer disposed on the sensing electrode, wherein an upper surface of the antireflection layer is wider than an upper surface of the sensing electrode, and at least a portion of the touch window has a curved shape.

Description

Touch window {TOUCH WINDOW}

The present description relates to a touch window.

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

The touch panel may be typically classified into a resistive type touch panel and a capacitive type touch panel. When a pressure is applied to an input device, a resistive touch panel detects a change in resistance according to a connection between electrodes and detects a position. The capacitive touch panel detects a change in capacitance between electrodes when a finger touches it and detects a position. In consideration of the convenience and sensing power of the manufacturing method, the capacitive method has recently attracted attention in small models.

Indium tin oxide (ITO), which is most widely used as a transparent electrode of such a touch panel, is expensive, and physically easily hit by bending and bending of the substrate deteriorates the characteristics of the electrode. flexible) There is a problem that it is not suitable for the device. In addition, when applied to a large-sized touch panel, a problem occurs due to high resistance.

In order to solve this problem, active research on an alternative electrode is being conducted. In particular, a metal material is formed in the shape of an electrode to replace ITO, but in the case of a metal, the visibility may increase due to light reflection, thereby causing a problem that the pattern of the transparent electrode is visible.

The embodiment is to provide a touch window with improved visibility.

A touch window according to an embodiment of the present invention includes a substrate; And an electrode portion disposed on a substrate in a mesh shape, wherein the electrode portion includes: a main pattern and a sensing electrode disposed on the main pattern to sense a position; And an antireflection layer disposed on the sensing electrode, wherein an upper surface of the antireflection layer is wider than an upper surface of the sensing electrode, and at least a part of the touch window has a curved shape.

The anti-reflection layer of the touch window according to an embodiment of the present invention is a touch window having a hemispherical shape.

A touch window that satisfies Equation 1 below when the radius of the antireflection layer of the touch window according to an embodiment of the present invention is defined as R.

Equation 1

0.1<1um/R<=10

A touch window having an arc angle of the antireflection layer of the touch window according to an embodiment of the present invention is in the range of 45 degrees to 180 degrees.

A touch window having an arc angle of the antireflection layer of the touch window according to an embodiment of the present invention is in the range of 120 degrees to 150 degrees.

A touch window in which a part of the antireflection layer of the touch window according to an embodiment of the present invention is spaced apart from the sensing electrode.

A touch window in which a line width of the antireflection layer of the touch window according to an embodiment of the present invention is wider than that of the sensing electrode.

The antireflection layer of the touch window according to an embodiment of the present invention includes a first antireflection unit and a second antireflection unit surrounding the first antireflection unit, and the second antireflection unit is disposed on a side of the sensing electrode. Touch windows.

The second anti-reflective part of the touch window according to an embodiment of the present invention is a touch window disposed to be spaced apart from a side surface of the sensing electrode.

The second antireflection unit of the touch window according to an embodiment of the present invention is a touch window bent toward the substrate from the first antireflection unit.

The touch window of the touch window according to an embodiment of the present invention further comprises a third anti-reflective portion extending from the second anti-reflecting portion and bent.

A touch window in which an end of the antireflection layer of the touch window according to an embodiment of the present invention is disposed lower than a height of an upper surface of the sensing electrode.

The sensing electrode of the touch window according to the embodiment of the present invention is at least one of copper (Cu), gold (Au), silver (Ag), aluminum (Al), titanium (Ti), nickel (Ni), or an alloy thereof. A touch window containing one.

A touch window according to an embodiment of the present invention includes: a touch window; And a driving unit disposed on the touch window, wherein the touch window includes: a substrate; And an electrode portion disposed on a substrate in a mesh shape, wherein the electrode portion includes: a main pattern and a sensing electrode disposed on the main pattern to sense a position; And an antireflection layer disposed on the sensing electrode, wherein an upper surface of the antireflection layer is wider than an upper surface of the sensing electrode, and at least a part of the touch window has a curved shape.

The anti-reflection layer of the touch window according to an embodiment of the present invention is a touch window having a hemispherical shape.

A touch window that satisfies Equation 1 below when the radius of the antireflection layer of the touch window according to an embodiment of the present invention is defined as R.

Equation 1

0.1<1um/R<=10

A touch window having an arc angle of the antireflection layer of the touch window according to an embodiment of the present invention is in the range of 45 degrees to 180 degrees.

The touch window according to the embodiment includes an antireflection layer disposed on the sensing electrode, and an area of an upper surface of the antireflection layer is larger than an area of an upper surface of the electrode. In particular, the anti-reflective layer may have a curved shape at least in part, and by adjusting the range of the radius of the anti-reflective layer and adjusting the angle formed by both ends of the anti-reflective layer, it is possible to prevent an increase in visibility due to light reflection from the electrode. have. In addition, since the antireflection layer can lower the reflectance of not only the upper surface of the sensing electrode, but also the side surface, it is advantageous in visibility. In addition, visibility can be improved even at a wide viewing angle. Accordingly, it is possible to improve the optical properties of the sensing electrode.

1 is a plan view of a touch window according to an embodiment.
FIG. 2 is a cross-sectional view taken along line A-A' of FIG. 1;
3 is an enlarged view of a dotted line portion of FIG. 2.
4 to 11 are views showing a process of a method of manufacturing a touch window according to an embodiment of the present invention.
12 is a view showing a cross-sectional view of a touch window according to another embodiment of the present invention.
13 to 15 are perspective views of a display device including a touch window according to still another embodiment of the present invention.

Hereinafter, with reference to the drawings of the touch window according to an embodiment of the present invention will be described in detail. The following embodiments are provided as examples in order to sufficiently convey the spirit of the present invention to those skilled in the art. Accordingly, the present invention is not limited to the embodiments described below and may be embodied in other forms. In addition, in the drawings, the size and thickness of the device may be exaggerated for convenience. Throughout the specification, the same reference numbers indicate the same elements.

<Touch window according to an embodiment of the present invention>

First, a touch window according to an embodiment will be described in detail with reference to FIGS. 1 and 2. 1 is a plan view of a touch window according to an exemplary embodiment, FIG. 2 is a cross-sectional view taken along line AA′ of FIG. 1, and FIG. 3 is an enlarged view of a dotted line portion of FIG. 2.

Referring to FIG. 1, the touch window 10 according to the embodiment includes an effective area AA for detecting the position of an input device (eg, a finger, etc.) and an ineffective area AA disposed around the effective area AA. It may include the substrate 100 on which the area UA is defined.

Here, the electrode unit 20 including the sensing electrode 400 may be formed in the effective area AA to detect the input device. In addition, a wiring 600 electrically connecting the electrode unit 20 may be formed in the non-effective area UA. In addition, an external circuit connected to the wiring 600 may be located in the non-effective area UA.

When an input device such as a finger comes into contact with such a touch window, a difference in capacitance occurs at a portion where the input device is in contact, and a portion where the difference occurs may be detected as a contact position.

This touch window will be described in more detail as follows.

In FIG. 1, the touch window 10 may include an electrode part 20, and the electrode part 20 may be arranged in a mesh shape.

The substrate 100 may be formed of various materials capable of supporting the electrode portion 20, the wiring 600, and a circuit board formed thereon. The substrate 100 may be formed of, for example, a glass substrate or a plastic substrate including polyimide.

An outer dummy layer may be formed in the non-effective area UA of the substrate 100.

The outer dummy layer may be formed by coating a material having a predetermined color so that the wiring 600 and a printed circuit board connecting the wiring 600 to an external circuit are not visible from the outside.

The outer dummy layer may have a color suitable for a desired appearance, and for example, may include black pigment and the like to exhibit black. In addition, a desired logo 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.

An electrode part 20 may be formed on the substrate 100. The electrode unit 20 may detect whether an input device such as a finger is in contact.

Specifically, the electrode part 20 may include a mesh opening OA and a mesh line LA. In this case, the line width of the mesh line LA may be 0.1 μm to 10 μm. The mesh line LA having a line width of 0.1 μm or less may not be possible due to the manufacturing process. When the line width is 10 µm or less, the pattern of the electrode part 20 may be made invisible. Preferably, the line width of the mesh line LA may be 1 µm to 5 µm.

Meanwhile, the mesh opening OA may have a square shape. However, the embodiment is not limited thereto, and the mesh opening OA may have various shapes such as a diamond shape, a pentagonal shape, a hexagonal polygonal shape, or a circular shape.

Since the electrode part 20 has a mesh shape, the pattern of the electrode part 20 may not be visible on the effective area AA. That is, even if the electrode part 20 is formed of metal, the pattern can be made invisible. In addition, even when the electrode unit 20 is applied to a large-sized touch window, resistance of the touch window may be reduced.

The electrode part 20 may include a sub-pattern 200, a main pattern 300, a sensing electrode 400, and an anti-reflection layer 500.

The sub-pattern 200 is disposed on the substrate 100.

The sub-pattern 200 is disposed on the mesh line part LA. Accordingly, the sub-pattern 200 may be arranged in a mesh shape, and the sub-pattern 200 may be embossed.

Meanwhile, the main pattern 300 is disposed adjacent to the sub-pattern 200.

The main pattern 300 is disposed on the substrate 100, and the main pattern 300 is disposed in the mesh opening OA. Accordingly, the main pattern 300 may be disposed between the sub-patterns 200, and the main pattern 300 may be embossed, and at this time, the main pattern 300 may have a curved surface at least in part. It can have a shape that makes up.

The sub-pattern 200 and the main pattern 300 may include resin or polymer.

The sensing electrode 400 may be disposed on the main pattern 300, and in this case, the sensing electrode 400 may have a shape corresponding to the main pattern 300, that is, at least a portion thereof may have a curved shape. Further, the sensing electrode 400 may be disposed on the mesh line LA, and the sensing electrode 400 may be disposed in a mesh shape.

The sensing electrode 400 may include a metal material having excellent electrical conductivity. For example, the sensing electrode 400 may include at least one of copper (Cu), gold (Au), silver (Ag), aluminum (Al), titanium (Ti), nickel (Ni), or an alloy thereof. I can. Through this, it is possible to improve the electrical characteristics of the touch window to which the sensing electrode 400 is applied.

The antireflection layer 500 may be disposed on the main pattern 300, and the antireflection layer 500 is disposed on the upper surface of the sensing electrode 400. Accordingly, the antireflection layer 500 may have a shape corresponding to the shape of the main pattern 300, that is, at least a portion of the antireflection layer 500 may have a curved shape. In addition, the anti-reflection layer 500 may be disposed on the mesh line LA, and the anti-reflection layer 500 may be disposed in a mesh shape.

Meanwhile, the antireflection layer 500 may be disposed on the upper surface 400a of the sensing electrode 400. In addition, the antireflection layer 500 may have a shape corresponding to a shape formed by the sensing electrode 400, and accordingly, at least a portion of the antireflection layer 500 may have a curved shape.

The area of the upper surface 500a of the antireflection layer 500 is larger than the area of the upper surface 400a of the sensing electrode 400. Accordingly, the antireflection layer 500 may entirely cover the upper surface 400a of the sensing electrode 400.

In addition, the line width L2 of the antireflection layer 500 is wider than the line width L1 of the sensing electrode 400. That is, the length L2 of one end face of the antireflection layer 500 is longer than the length L1 of one end face of the sensing electrode 400.

Specifically, a ratio of the line width L1 of the sensing electrode 400 and the line width L2 of the antireflection layer 500 may be 1:1.3 to 1:2.

When the ratio of the line width L1 of the sensing electrode 400 and the line width L2 of the antireflection layer 500 is less than 1:1.3, the antireflection layer 500 is the upper surface 400a of the sensing electrode 400 It may be difficult to do reflective zoning because it is difficult to cover sufficiently.

In addition, the ratio of the line width L1 of the sensing electrode 400 and the line width L2 of the antireflection layer 500 may be larger than 1:2 during the manufacturing process.

Meanwhile, a part of the antireflection layer 500 may be disposed to be spaced apart from the sensing electrode 400. That is, a part of the antireflection layer 500 may be disposed to be spaced apart from the sensing electrode 400 by a predetermined distance D.

Specifically, the anti-reflection layer 500 may include a first anti-reflective portion 510 and a second anti-reflective portion 520.

The second anti-reflection part 520 may surround the first anti-reflection part 510. The second antireflection unit 520 may be disposed outside the first antireflection unit 510. The first antireflection part 510 is disposed on the upper surface 400a of the sensing electrode 400. The second anti-reflective part 520 extends from the first anti-reflective part 510 and is disposed on the side surface 400e of the sensing electrode 400. In this case, the second anti-reflection unit 520 may be disposed to be spaced apart from the side surface 400e of the sensing electrode 400.

That is, the second anti-reflective portion 520 may be disposed apart by a predetermined distance D without contacting the side surface 400e of the sensing electrode 400.

The second anti-reflection part 520 may be bent toward the substrate 100 from the first anti-reflection part 510. That is, the second anti-reflective portion 520 may be bent or bent downward from the first anti-reflective portion 510. Accordingly, the end 500e of the antireflection layer 500 may be disposed lower than the height 400aH of the upper surface 400a of the sensing electrode 400. Through this, the second antireflection unit 520 may surround the side surface 400e of the sensing electrode 400. Accordingly, the second anti-reflection unit 520 may lower the reflectance of the side surface 500e of the sensing electrode 400 and improve visibility even in a wide viewing angle.

The antireflection layer 500 is copper (Cu), gold (Au), silver (Ag), aluminum (Al), titanium (Ti), nickel (Ni), chromium (Cr), and lead (Pd), or an alloy thereof It may be a material formed by oxidizing.

That is, the antireflection layer 500 may include at least one of metal oxide, metal nitride, and metal oxynitride. In addition, when the sensing electrode 400 includes the first metal, the antireflection layer 500 may include an oxide including the first metal. In addition, the anti-reflection layer 500 may be a blackening layer.

Meanwhile, at least a portion of the antireflection layer 500 may have a curved shape so as to correspond to the shape of the main pattern 300 and the sensing electrode 400.

As an example of a curved shape, the antireflection layer 500 may have a hemispherical shape so as to correspond to the shape of the main pattern 300 and the sensing electrode 400. As such, when the antireflection layer 500 has a hemispherical shape, the The radius R of the antireflection layer 500 may satisfy Equation 1.

Equation 1

When the line width of the mesh line LA is in the range of 0.1 µm to 10 µm, the radius R of the anti-reflection layer 500 may also have a value in the range of 0.1 µm to 10 µm, and accordingly, the radius ( R) may have a range of 0.1<1um/R<=10.

When the 1um/R value in Equation 1 is less than or equal to 0.1, the curvature becomes too large, and accordingly, the line width of the mesh line LA must be made small. However, since manufacturing is difficult to make the line width of the mesh line part LA less than 0.1 µm, it is preferable that the line width of the mesh line part LA has a range of 0.1 µm to 10 µm, and accordingly the reflection It is preferable that the value of 1 um/R with respect to the radius R of the prevention layer 500 is also 0.1 µm or more. And when the value of 1um/R with respect to the radius (R) of the antireflection layer 500 is 10 or more, it becomes almost the same as the case where no curvature is applied, so the antireflection layer 500 is used to achieve the desired effect of the invention. It is preferable that the value of 1um/R with respect to the radius (R) of is 10 or less.

In addition, when the antireflection layer 500 is considered as one circle, the angle formed from the center of the circle to the end 500e of the antireflection layer 500, in other words, the angle formed by the arc of the antireflection layer 500 is 45 It can be configured in three stages ranging from 180 degrees to 180 degrees, from 90 degrees to 170 degrees, or from 120 degrees to 150 degrees, and it is effective to prevent visibility from 120 degrees to 150 degrees.

These figures are almost the same as when the angle formed by the arc is less than 45 degrees, the point that the curvature is too large to make the mesh line width (LA) difficult, and when the angle formed by the arc exceeds 180 degrees, the curvature is not applied. As a value determined in consideration of all the points in which the effect of preventing visibility is not obtained, the effect of the present invention may have critical significance within the numerical range presented above.

When the angle formed by both ends of the anti-reflection layer 500 has the above-described angle, it is possible to prevent the sensing electrode 400 from being visually recognized even when viewed in any direction.

Through the antireflection layer 500, it is possible to prevent an increase in visibility due to light reflection of the sensing electrode 400 including a metal material.

In addition, the anti-reflection layer 500 can lower the reflectance of not only the upper surface of the sensing electrode 400 but also the side surface, which is advantageous in visibility. In addition, visibility can be improved even at a wide viewing angle. Accordingly, the optical properties of the sensing electrode 400 may be improved.

Subsequently, the wiring 600 is formed in the invalid area UA. The wiring 600 may apply an electrical signal to the sensing electrode 400. The wiring 600 may be formed in the non-effective area UA to be invisible.

Meanwhile, although not shown in the drawing, a circuit board connected to the wiring 600 may be further positioned. Various types of printed circuit boards may be applied as the circuit board, and for example, a flexible printed circuit board (FPCB) may be applied.

<Method of manufacturing a touch window according to an embodiment of the present invention>

4 to 11 are views showing a process of a method of manufacturing a touch window according to an embodiment of the present invention.

First step

4 to 7, a step of preparing a substrate 100 and forming a sub-pattern 200 and a main pattern 300 on the substrate 100 through an imprinting process.

The substrate 100 is polyethylene naphthalate (PEN), polyethersulfone (PES), cyclic olefin polymer (COC), triacetylcellulose (TAC) film, polyvinyl alcohol

(Polyvinyl alcohol, PVA) film, polyimide (PI) film, polystyrene (PS), biaxially oriented polystyrene (biaxially oriented PS, BOPS containing K resin), glass or tempered glass, etc. It is not limited thereto.

When the substrate 100 is formed of silicon, not only can the sensing electrode 400 stably support the sensing electrode 400 by having a holding force of a predetermined strength or more, but also the sensing electrode 400 directly on the substrate 100 without an additional adhesive material due to its adhesiveness. Can be formed. Therefore, the manufacturing process of the touch window 10 can be simplified and manufacturing cost can be reduced.

In the imprinting process, after patterning a photoresist by electron beam lithography, a hard stamp produced through an etching process may be used.After forming a shape by compressing the photocurable organic layer with the stamp, it is cured with heat or ultraviolet rays to form the substrate 100 ) By providing a patterned organic material mask, the patterned mask can be used as an etching mask or a structure for a lift-off process.

The substrate 100 on which the sub-pattern 200 and the main pattern 300 are formed may be formed by placing the mold M on which the pattern is formed on the resin and performing imprinting.

A plurality of patterns on the mold (M) are formed.

A pattern corresponding to the sub-pattern 200 of the substrate 100 and a pattern corresponding to the main pattern 300 are respectively formed.

On the mold M, a pattern corresponding to the sub-pattern 200 of the substrate 100 is defined as a first pattern 210, and a pattern corresponding to the main pattern 300 of the substrate 100 is a second pattern ( 310), the second pattern 310 may have a shape in which at least a portion of the second pattern 310 forms a curved surface as shown in FIG. 4 and may have a rectangular shape as shown in FIG. 5.

In the imprinting process, as shown in FIG. 4, when the second pattern 310 has a shape in which at least a portion of the second pattern 310 forms a curved surface, for example, in the case of a hemispherical shape, the stress applied to the sensing metal 400 is small and a stable process is possible, It is effective to use the mold M having the second hemispherical pattern 310.

Second stage

Referring to FIG. 8, it is a step of forming the sensing electrode 400 on the main pattern 300.

The sensing electrode 400 may be formed on the main pattern 300 through a deposition process using a sputtering apparatus.

The sensing electrode 400 may be formed as a metal mesh pattern.

By forming the sensing electrode 400 in a metal mesh pattern, there is an effect of securing price competitiveness compared to the prior art using expensive ITO.

Step 3

Referring to FIG. 9, it is a step of forming an antireflection layer 500 on the sensing electrode 400.

Meanwhile, the antireflection layer 500 may be at least one compound containing an element selected from nickel, chromium, zinc, tin, and copper, and may be conductive or non-conductive.

The antireflection layer 500 may be formed on the sensing electrode 400 through a deposition process.

The antireflection layer 500 may be formed by oxidizing the surface of the sensing electrode 400 to form an oxide layer.

Specifically, Cu2O or CuO can be deposited by oxidizing the surface of the sensing electrode 400. Since Cu2O has a brown color, it is called Brown Oxide, and because CuO has a black color, it is black oxide. It is called.

The antireflection layer 500 may absorb external ambient light incident into the touch window 10 from the outside, thereby preventing a viewer from glare and improving luminance of a display device in which the touch window 10 is embedded.

In addition, the antireflection layer 500 may be formed not only on the upper surface of the sensing electrode 400 but also on the lower surface to absorb light coming from the rear surface.

The relationship between the antireflection layer 500, the sensing electrode 400, and the main pattern 300 will be described with reference to FIG. 10.

At this time, at least a portion of the antireflection layer 500, the sensing electrode 400, and the main pattern 300 may have a curved shape so as to correspond to each other. As an example of the curved shape, the antireflection layer 500, the sensing electrode 400, and the main pattern 300 may be formed in a shape having a partial area of a circle, that is, an arc.

In addition, the anti-reflection layer 500 may be formed in a shape of a shade covering the sensing electrode 400. That is, the end 500e of the antireflection layer 500 may be formed to protrude from the end of the sensing electrode 400. In this case, the degree of protrusion of the tip 500e of the antireflection layer 500 may vary according to a difference in etching rate.

In other words, the length of the arc of the antireflection layer 500 may be longer than the length of the arc of the sensing electrode 400.

Meanwhile, based on the anti-reflection layer 500, a line extending from the anti-reflection layer 500 is indicated by a dotted line.

Two vertical lines intersecting the center point of the circle indicated by the dotted line are drawn, and dotted lines are respectively displayed to both ends of the antireflection layer 500 after passing the center point of the dotted circle.

The angle formed between the dotted lines passing through both ends of the antireflection layer 500 may be set to 90 degrees to 180 degrees.

Regardless of the viewing angle, in order to improve visibility by preventing reflection of the metal 400, it can be configured in three stages ranging from 45 degrees to 180 degrees, 90 degrees to 170 degrees, or 120 degrees to 150 degrees, and the optimal angle is 120 degrees. It is most appropriate between degrees and 150 degrees.

In addition, it is preferable that the radius of the antireflection layer 500 satisfies the range of 0.1<1um/R<=10.

Step 4

The fourth step is an etching step.

The sensing electrode 400 and the antireflection layer 500 formed on the sub-pattern 200 may be removed through etching.

In this case, the sensing electrode 400 and the antireflection layer 500 formed on the sub-pattern 200 may be etched in a single process.

That is, the sensing electrode 400 and the antireflection layer 500 may be etched with a single etching solution. At this time, the antireflection layer 500 is made of a material that reacts to a nickname different from the detection electrode 400, so that the antireflection layer 500 is not nicknamed when the detection electrode 400 is nicknamed. have.

A difference in etching area occurs according to the difference in the structure of the sub-pattern 200 and the bonding area between the main pattern 300 and the sensing electrode 400.

That is, since the bonding area between the sub-pattern 200 and the sensing electrode 400 is smaller than the bonding area between the main pattern 300 and the sensing electrode 400, it is formed on the main pattern 300 Etching of the sensing electrode 400 is less generated.

Further, according to the same etching rate, the sensing electrode 400 formed on the main pattern 300 remains, and the sensing electrode 400 formed on the sub-pattern 200 is etched and removed. Accordingly, the antireflection layer 500 formed on the sub-pattern 200 may also be lifted off and removed. Accordingly, the sensing electrode 400 and the anti-reflection layer 500 may be formed only on the main pattern 300, and the sensing electrode 400 may be disposed in a mesh shape. In addition, as described above, since the anti-reflection layer 500 on the main pattern 300 is not etched, the line width of the anti-reflection layer 500 may be formed to be wider than the line width of the sensing electrode 400.

In this way, the touch window 10 has an area of the antireflection layer 500 disposed on the sensing electrode 400 larger than the area of the upper surface 400a of the sensing electrode 400, and has a hemispherical shape as an example of a curved shape. If there is a value in the range of 0.1<1um/R<=10, which is the optimum ratio with respect to the radius of the antireflection layer 500, and the angle formed by the arc of the antireflection layer 500, the light of the sensing electrode 400 is Increased visibility due to reflection can be prevented. In addition, the anti-reflection layer can lower the reflectance of not only the upper surface of the sensing electrode, but also the side surface of the sensing electrode, which is advantageous in visibility. In addition, visibility can be improved even at a wide viewing angle. Accordingly, it is possible to improve the optical properties of the sensing electrode.

Meanwhile, referring to FIG. 11, such a touch window 10 may be disposed on the display panel 30 that is a driver. The touch window 10 and the display panel 30 are bonded together to form a display device.

The display panel 30 has a display area for outputting an image. A display panel applied to such a display device may generally include an upper substrate 31 and a lower substrate 32. A data line, a gate line, and a thin film transistor (TFT) may be formed on the lower substrate 32. The upper substrate 31 may be bonded to the lower substrate 32 to protect components disposed on the lower substrate 32.

12 is a cross-sectional view of a touch window 10 according to another embodiment of the present invention.

5 and 12, as shown in FIG. 5, the second pattern 310 of the mold M has a rectangular shape, and the sensing electrode 400 and the sensing electrode are formed on the main pattern 300 corresponding thereto. An antireflection layer 500 may be formed on 400).

The anti-reflection layer 500 may include first and second anti-reflection portions 510 and 520, and the first anti-reflection portion 510 is formed in a region corresponding to the sensing electrode 400, and the The second anti-reflection unit 520 may be bent toward the substrate 100 from the first anti-reflection unit 510. That is, the second anti-reflection unit 520 may be bent or bent downward from the first anti-reflection unit 510, and at least a portion of the area may have a curved shape.

A dotted line is drawn by a circle having an arc from both ends of the second anti-reflection unit 520, that is, from the point where it begins to extend from the first anti-reflection unit 510 to the end of the second anti-reflection unit 520 Denoted as.

The angle between both ends of the second anti-reflection unit 520 at the center point of this circle may range from 15 degrees to 150 degrees.

13 to 15 are perspective views of a display device including a touch window according to another embodiment of the present invention.

11 and 13 to 15, the touch window 10 according to an embodiment of the present invention may be disposed on the display panel 30 that is a driver.

The display panel 30 may be formed in various shapes depending on what kind of display device the display device according to the embodiment of the present invention is. That is, the display device according to an embodiment of the present invention includes a liquid crystal display (LCD), a field emission display, a plasma display (PDP), an organic light emitting display (OLED), and an electrophoretic display (EPD). ), etc., and accordingly, the display panel can be configured in various forms.

The touch window 10 and the display panel may be attached to each other to form a display device, and such a display device may be a mobile terminal.

In particular, the touch window 10 according to the embodiment may include a curved touch window. Accordingly, the display device including the same may be a curved display device.

Meanwhile, referring to FIG. 14, the touch window 10 may include a flexible touch window that is bent. Accordingly, the display device including the same may be a flexible display device. Thus, the user can bend or bend it by hand.

Meanwhile, referring to FIG. 15, the touch window 10 may be applied not only to a display device such as a mobile terminal, but also to a vehicle. Although a car navigation is shown in the drawing, the embodiment is not limited thereto. Therefore, it is applied not only to the PND (Personal Navigation Display), but also to an instrument panel (dashboard) to implement a CID (Center Information Display). However, the embodiment is not limited thereto, and of course, such a display device may be used in various electronic products.

In the detailed description of the present invention described above, it has been described with reference to preferred embodiments of the present invention, but those skilled in the art or those of ordinary skill in the relevant technical field of the present invention described in the claims to be described later It will be understood that various modifications and changes can be made to the present invention without departing from the spirit and technical scope. Accordingly, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be determined by the claims.

10 touch windows
20 electrode part
30 display panel
31 Upper substrate
32 lower substrate
100 substrates
200 subpatterns
300 main patterns
400 sensing electrode
400a upper surface of sensing electrode
Side of 400e sensing electrode
The height of the upper surface of the 400aH sensing electrode
500 antireflection layer
500a antireflection layer top surface
500e antireflection layer end
510 first anti-reflection unit
520 second anti-reflection unit
600 wiring

Claims (17)

Board; And
Including an electrode portion disposed on the substrate in a mesh shape,
The electrode part,
A sensing electrode for sensing a position; And
Including an anti-reflection layer disposed on the sensing electrode,
The sensing electrode is arranged in a mesh shape,
The line width of the antireflection layer is longer than the line width of the sensing electrode,
The ratio of the line width of the sensing electrode and the line width of the antireflection layer is 1:1.3 to 1:2,
The anti-reflection layer includes a first anti-reflection part and a second anti-reflection part,
The first anti-reflection part is in contact with the upper surface of the sensing electrode,
The second anti-reflection part is bent toward the substrate at an end of the first anti-reflection part,
The second antireflection part is spaced apart from the side surface of the sensing electrode,
The sensing electrode includes at least one of copper (Cu), gold (Au), silver (Ag), aluminum (Al), titanium (Ti), nickel (Ni), or an alloy thereof,
The antireflection layer is a touch comprising a metal oxide including at least one of copper (Cu), gold (Au), silver (Ag), aluminum (Al), titanium (Ti), nickel (Ni), or an alloy thereof window. The touch window of claim 1, wherein the antireflection layer has a hemispherical shape. The touch window of claim 2, wherein the following equation (1) is satisfied when the radius of the antireflection layer is defined as R.
Equation 1
0.1<1um/R<=10 The method of claim 3,
The angle of the arc of the anti-reflection layer is a touch window having a range of 45 degrees to 180 degrees. The method of claim 4,
The angle of the arc of the anti-reflection layer is a touch window having a range of 120 degrees to 150 degrees. The method of claim 1,
The substrate includes a sub pattern and a main pattern,
The electrode part is disposed only on the main pattern,
Touch window including a sensing electrode disposed on the main pattern to sense a position delete delete delete delete The method of claim 1,
The touch window further comprises a third anti-reflective part extending from the second anti-reflecting part and bent. The method of claim 1,
A touch window in which an end of the antireflection layer is disposed lower than a height of an upper surface of the sensing electrode. delete delete delete delete delete

Images