CN107037916A - Touch window - Google Patents

Abstract

A touch window according to an embodiment includes: a substrate; a sensing electrode disposed on one surface of the substrate; a first anti-reflection layer disposed on one surface of the sensing electrode; A second anti-reflection layer, the second anti-reflection layer is disposed on the other surface of the substrate, wherein the first anti-reflection layer and the second anti-reflection layer comprise different materials from each other. In addition, the touch window according to the embodiment includes: a substrate; and a sensing electrode arranged on the substrate, wherein the sensing electrode includes a first sensing electrode and a second sensing electrode, wherein the substrate is arranged in a thickness direction thereof. have a phase difference of 4500nm or greater.

Description

touch window

technical field

The present disclosure relates to a touch window.

Background technique

Recently, a touch window performing an input function by an input device such as a finger or a stylus by touching an image displayed on a display device has been applied to various electric appliances.

Touch windows can be generally classified into resistive touch windows and capacitive touch windows. In the resistive touch window, glass and electrodes are short-circuited to each other due to the pressure of the input device, so that the position of the touch point is detected. In the capacitive touch window, the position of the touch point is detected by sensing a change in capacitance between electrodes when a finger touches the capacitive touch window.

As the resistive touch window is repeatedly used, the performance of the resistive touch window may degrade, and scratches may occur in the resistive touch window. Therefore, capacitive touch windows with excellent durability and long life have attracted more attention.

Such a touch window may be formed in various types according to positions of electrodes. For example, electrodes may be formed on one surface or both surfaces of the substrate.

The electrodes and wire electrodes connected thereto are arranged on one surface of the substrate so that a touch operation is detected when the electrodes are touched, thereby performing an operation corresponding to the touch operation.

In this case, the reflectivity and visibility of the touch window may be degraded due to the material difference between the substrate and the electrodes. For example, when electrodes arranged on the substrate are arranged opposite to the display panel, light incident from the outside is reflected from the electrodes, and thus, the visibility of the touch window may be degraded.

Meanwhile, when the substrate has optical anisotropy, a rainbow phenomenon may appear. Specifically, when polarized sunglasses are used, a rainbow phenomenon is easily observed.

In addition, when the substrate has optical isotropy, depending on the polarizing direction of the polarizing plate and the direction and angle of the polarizing sunglasses, a blackout phenomenon in which the screen turns black may occur. Therefore, the visibility of the touch window may be degraded.

Therefore, there is a need for a touch window with a novel structure that can solve the aforementioned problems.

Contents of the invention

Embodiments provide a touch window with reduced reflectivity and improved visibility.

In one embodiment, the touch window includes: a substrate; a sensing electrode arranged on one surface of the substrate; a first anti-reflective layer (first anti-reflective layer), the first anti-reflective layer arranged on on one surface of the sensing electrode; and a second anti-reflective layer (second anti-reflective layer), which is arranged on the other surface of the substrate, wherein the first anti-reflective layer and the second anti-reflective layer include different materials from each other.

In another embodiment, the touch window includes: a substrate; and a sensing electrode arranged on the substrate, wherein the sensing electrode includes a first sensing electrode and a second sensing electrode, wherein the substrate is have a phase difference of 4500nm or more.

The touch window according to the embodiment can reduce reflectivity and have improved visibility. In detail, an anti-reflection layer is disposed on one surface of the sensing electrode so that the amount of light reflected from the sensing electrode can be reduced.

In addition, another anti-reflection layer is disposed on one surface of the substrate, so that the amount of light reflected from the substrate can be reduced.

Accordingly, reflectivity of light reflected from the substrate and the sensing electrodes can be reduced.

In addition, a matching layer that reduces a difference in refractive index between the sensing electrode and the substrate is disposed on the other surface of the sensing electrode, so that the electrode pattern can be prevented from being viewed from the outside, thereby improving visibility of the touch window.

Therefore, the touch window according to this embodiment can have low reflectivity and improved visibility.

In the touch window according to the embodiment, the sensing electrodes may be arranged on the substrate, and the substrate may have a phase difference of 4500 nm or more in a thickness direction thereof.

That is, the touch window according to this embodiment may have a phase difference of 4500 nm or more in its thickness due to stretching. Therefore, the touch window according to the embodiment can prevent the rainbow phenomenon.

In addition, the substrate may be an optically anisotropic substrate. Therefore, a blackout phenomenon can be prevented.

The details of one or more implementations are set forth in the accompanying drawings and the description below. Other features will be apparent from the description and drawings, and from the claims.

Description of drawings

FIG. 1 is a perspective view of a touch window according to a first embodiment.

FIG. 2 is a plan view of a touch window according to the first embodiment.

3 and 4 are sectional views taken along line A-A' of FIG. 2 .

FIG. 5 is a view showing a touch device according to a first embodiment in which a display panel is coupled to a touch window.

Fig. 6 is a sectional view taken along line B-B' of Fig. 2 .

FIG. 7 is a perspective view of a touch window according to a second embodiment.

Fig. 8 is a sectional view taken along line C-C' of Fig. 7 .

FIG. 9 is a perspective view of a touch window according to a third embodiment.

Fig. 10 is a sectional view taken along line D-D' of Fig. 9 .

Fig. 11 is a perspective view of a touch window according to a fourth embodiment.

Fig. 12 is a sectional view taken along line E-E' of Fig. 11 .

13 to 15 are views illustrating a touch device according to an embodiment, in which a touch window and a display panel are coupled to each other.

16 to 19 are views illustrating examples of a touch device to which the touch window according to the embodiment is applied.

detailed description

In the description of the embodiments, it will be understood that when a layer (or film), region, pattern or structure is represented as being located on another substrate, another layer (or film), another region, another pad or another pattern "on" or "under", it may be located "directly" or "indirectly" on another substrate, another layer (or film), another region, another pad or another pattern , or one or more intervening layers may also be present. Such positions of layers have been described with reference to the drawings.

In the following description, when a component is connected to another component, the components are not only directly connected to each other but also temporally connected to each other with another component interposed therebetween. In addition, when a predetermined part "includes a predetermined element, the predetermined part does not exclude other elements, but it may also include other elements unless otherwise specified.

The thickness and size of each layer (or film), each region, each pattern, or each structure shown in the drawings may be modified for the purpose of convenience or simplified explanation. Also, the size of the elements may not fully reflect the actual size.

Referring to FIGS. 1 to 6 , the touch window 10 according to the first embodiment may include a substrate 100 , a decoration layer 200 , a sensing electrode 300 , a wire electrode 400 and a printed circuit board 500 .

Electrode 100 may be rigid or flexible.

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

In addition, the substrate 100 may include an optically isotropic film. For example, the substrate 100 may include cycloolefin copolymer (COC), cycloolefin polymer (COP), optically isotropic polycarbonate (PC), optically isotropic polymethylmethacrylate (PPMA), or the like.

Sapphire is a material having excellent electrical characteristics such as dielectric constant, so that touch response speed can be significantly increased and space touch such as hovering can be easily realized. In addition, since sapphire has high surface hardness, sapphire may be applied to a cover substrate. Here, hovering refers to a technique for identifying coordinates even in locations spaced a short distance from the display.

In addition, the substrate 100 may be partially bent to have a curved surface. That is, the substrate 100 may be curved to have a partially flat surface and a partially curved surface. In detail, one end of the substrate 100 may be bent to have a curved surface or may be bent or warped to have a surface including random curvature.

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

In addition, the substrate 100 may be a curved or curved substrate. That is, the touch window including the substrate 100 may also be formed to have a flexible, curved or bent property. Therefore, the touch window according to this embodiment is easy to carry and can be variously changed in design.

The substrate 100 may include a cover substrate. That is, the substrate 100 may be a cover substrate. Alternatively, a separate cover substrate may also be arranged at at least one of the one surface and the other surface of the substrate. In addition, when an independent cover substrate is further disposed on the substrate 100, the substrate and the cover substrate may be attached to each other through an adhesive layer. Therefore, the cover substrate and the substrate can be independently formed, and thus it is advantageous in mass production of the touch window.

The substrate 100 may include an active area AA and an unactive area UA as defined herein.

An image may be displayed in the active area AA, and an image may not be displayed in the unactive area UA arranged around the active area AA.

Also, a position of an input device (eg, a finger, a stylus, etc.) may be detected in at least one of the active area AA and the unactive area UA. If an input device such as a finger is in contact with the touch window, a capacitance change occurs at a portion where the input device contacts the touch window, and the portion where the capacitance change occurs may be detected as a contact position.

The decoration layer 200 may be disposed on the inactive area of the substrate 100 . The decoration layer 200 may be realized in various colors according to a desired appearance.

The decoration layer 200 may be formed by coating a material having a predetermined color such that a wire electrode, a printed circuit board connecting the wire electrode with an external circuit, and the like cannot be seen from the outside.

The decoration layer 200 may have a color suitable for a desired appearance. For example, the decoration layer 200 may include white or black pigment to appear black or white. For example, the decoration layer 200 may be formed by deposition, printing, wet coating, and the like. Alternatively, the decoration layer 200 may include films of various colors to represent various colors, such as red and blue.

In addition, desired logos and the like may be formed on the decoration layer 200 in various ways.

The sensing electrodes 300 may be disposed on the substrate 100 . In detail, the sensing electrode 300 may be disposed on the active area AA of the substrate 100 .

The sensing electrode 300 may include a conductive material. For example, the sensing electrode 300 may include a transparent conductive material that allows power to flow without interrupting light transmission. For example, the sensing electrode 300 may include a metal oxide such as indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, or titanium oxide. Accordingly, since the transparent material is disposed on the sensing active region, a degree of freedom in forming a pattern of the sensing electrode may be improved.

Alternatively, the electrode 300 may include nanowires, photosensitive nanowire films, carbon nanotubes (CNTs), graphene, conductive polymers, or mixtures thereof. Accordingly, since the transparent material is disposed on the sensing active region, a degree of freedom in forming a pattern of the sensing electrode may be improved.

If nanocomposite materials such as nanowires or CNTs are used, the sensing electrodes can be realized in black. In this case, it is possible to control the color and reflectance while ensuring electrical conductivity by controlling the content of the nanopowder. Therefore, the degree of freedom can be increased when manufacturing a flexible and/or bendable touch window.

Alternatively, the electrode layer 300 may include various metals. For example, the sensing electrode may include at least one of chromium (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), molybdenum (Mo), gold (Au), titanium (Ti) and its alloys.

The sensing electrode 300 may include a first sensing electrode 310 and a second sensing electrode 320 .

The first sensing electrode 310 may be disposed on the active area AA of the cover substrate 100 while extending in the first direction. In addition, the second sensing electrode 320 may be disposed on the active area AA of the cover substrate 100 while extending in the second direction. In detail, the second sensing electrode 320 may be disposed on the cover substrate 100 while extending in a second direction different from the first direction. That is, the first sensing electrodes 310 and the second sensing electrodes 320 may be arranged on the same plane of the cover substrate 100 to extend in different directions from each other.

The first sensing electrode 310 and the second sensing electrode 320 may be disposed on the cover substrate 100 to be insulated from each other. In detail, the first sensing electrodes 310 are connected to each other through the first connection electrodes 311, the insulating layer 350 is disposed on the first connection electrodes 311, and the second connection electrodes 321 are disposed on the insulating layer 350, so that the second sensing electrodes 320 may be connected through a second connection electrode 321 .

Accordingly, the first sensing electrode 310 and the second sensing electrode 320 do not contact each other, and may be arranged together on the same surface (ie, one surface of the active region) of the cover substrate 100 to be insulated from each other. In addition, the sensing electrodes 300 may be formed in a mesh shape. Since the sensing electrodes have a grid shape, the pattern of the sensing electrodes cannot be seen. That is, although the sensing electrodes are formed of metal, the pattern cannot be seen. In addition, even when the sensing electrodes are applied to a large-sized touch window, the resistance of the touch window can be reduced. In addition, the sensing electrodes and the wire electrodes may be simultaneously patterned using the same material.

The sensing electrode 300 may include a plurality of sub-electrodes, and the sub-electrodes may be arranged in a grid shape while crossing each other.

In detail, since the sub-electrodes cross each other in a grid shape, the sensing electrode 300 may include grid lines and grid openings between the grid lines.

The grid lines may have a line width of about 0.1 μm to about 10 μm. If the line width of the grid lines is less than 0.1 μm, the grid lines can be formed through a manufacturing process, or a short circuit may occur in the grid lines. If the line width of the grid lines exceeds 10 μm, the electrode pattern may be seen from the outside, and thus, visibility may decrease. Preferably, the line width of the grid lines may be about 0.5 μm to about 7 μm. More preferably, the line width of the grid lines may be about 1 μm to about 3.5 μm.

Also, the grid lines may have a thickness of about 100 nm to about 500 nm. When the thickness of the grid lines is less than about 100 nm, electrode resistance may increase, and thus, electrical properties may be degraded. When the thickness of the grid lines exceeds about 500 nm, the total thickness of the touch window may be thickened, and process efficiency may be degraded. Preferably, the thickness of the grid lines may be about 150 nm to about 200 nm. More preferably, the thickness of the grid lines may be about 180 nm to about 200 nm.

In addition, the mesh openings may be formed in various shapes. For example, mesh openings may have various shapes, such as polygonal shapes (including quadrilateral shapes, diamond shapes, pentagonal shapes, or hexagonal shapes) or circular shapes. Furthermore, the grid openings can be formed in regular or random shapes.

The wire electrode 400 may be disposed on the substrate 100 . In detail, the wire electrode 400 may be disposed on at least one of the active area AA and the unactive area UA of the substrate 100 . Preferably, the wire electrode 400 may be disposed on the unactive area UA of the substrate 100 . In detail, the wire electrode 400 may be disposed on the decoration layer 200 . The wire electrode 400 may be connected to the sensing electrode 300 and may be disposed on the decoration layer 200 .

The wire electrode 400 may include a first wire electrode 410 and a second wire electrode 420 . In detail, the wire electrode 400 may include a first wire electrode 410 connected to the first sensing electrode 310 and a second wire electrode 420 connected to the second sensing electrode 320 . One end of the first wire electrode 410 and the second wire electrode 420 may be connected to the sensing electrode 300 , and the other end of the first wire electrode 410 and the second wire electrode 420 may be connected to the printed circuit board 500 .

The wire electrode 400 may include a conductive material. For example, it is obvious that the wire electrode 400 may include the same or similar material as that of the sensing electrode 300 described above.

The wire electrode 410 may receive a touch signal detected from the sensing electrode 300 , and the touch signal may be transmitted through the wire electrode 400 to the driving chip 510 mounted on the printed circuit board 500 electrically connected to the wire electrode 400 .

The printed circuit board 500 may be a flexible printed circuit board (FPCB). The printed circuit board 500 may be connected with the wire electrode 400 disposed on the unactive area UA. In detail, the printed circuit board 500 may be electrically connected to the wire electrode 400 through an anisotropic conductive film (ACF) on the unactive area UA.

The driving chip 510 may be mounted on the printed circuit board 500 . In detail, the driving chip 510 may receive a touch signal detected by the sensing electrode 300 from the wire electrode 400 to perform an operation according to the touch signal.

Referring to FIGS. 3 and 4 , an anti-reflection layer may be disposed on one surface and the other surface of the substrate 100 .

In detail, the first anti-reflection layer 610 may be disposed on one surface of the substrate 100 , and the second anti-reflection layer 620 may be disposed on the other surface of the substrate 100 .

Here, one surface of the substrate 100 may be defined as a surface on which the sensing electrodes 300 and the electrode lines 400 are arranged, and the other surface of the substrate 100 may be defined as a surface opposite to the one surface of the substrate 100 .

The first anti-reflection layer 610 may be disposed on one surface of the sensing electrode 300 . The first anti-reflection layer 610 may be disposed in contact with the sensing electrode 300 . The first anti-reflection layer 610 may be disposed in direct contact with the sensing electrode 300 .

In addition, the first anti-reflection layer 610 may be disposed on the active area AA. For example, the first anti-reflection layer 610 may be disposed on the entire surface of the active area AA.

The first anti-reflection layer 610 may include a different material from the second anti-reflection layer 620 .

The first anti-reflection layer 610 may include at least one of a metal and a metal oxide containing the metal. For example, the first anti-reflection layer 610 may include aluminum (Al) and aluminum oxide (Al ₂ O ₃ ).

The first anti-reflection layer 610 and the sensing electrode 300 may have different refractive indices from each other. In detail, the refractive index of the first anti-reflection layer 610 may be smaller than that of the sensing electrode 300 .

For example, the refractive index of the first anti-reflection layer 610 may be about 1.7 to about 1.9. In addition, the sensing electrode 300 may have a refractive index of about 1.8 to about 2.2.

Referring to FIG. 4 , another anti-reflection layer may also be disposed on one surface of the substrate 100 . In detail, the third anti-reflection layer 630 may also be disposed on another surface of the sensing electrode 300 (ie, another surface opposite to one surface of the sensing electrode 300 ). That is, based on the sensing electrode 300 on one surface of the substrate 100, the third antireflection layer 630 may be disposed on one surface of the sensing electrode 300, and the first antireflection layer 610 on the other surface of the sensing electrode 300. .

The third anti-reflection layer 630 may be disposed in a plurality of layers. In detail, the third anti-reflective layer 630 may include a first sub-third anti-reflective layer (first sub-third anti-reflective layer) 631 and a second sub-third anti-reflective layer (second sub-third anti-reflective layer) 632 . In detail, the first sub-third anti-reflection layer 631 may be disposed in contact with another surface of the substrate 100 , and the second sub-third anti-reflection layer 632 may be disposed on the first sub-third anti-reflection layer 631 .

The first sub-third anti-reflection layer 631 and the second sub-third anti-reflection layer 632 may have different refractive indices from each other. In detail, the refractive index of the first sub-third anti-reflection layer 631 may be greater than the refractive index of the second sub-third anti-reflection layer 632 . That is, the first sub-third anti-reflection layer 631 may be a high-refraction layer, and the second sub-third anti-reflection layer 632 may be a low-refraction layer.

The first sub-third anti-reflection layer 631 and the second sub-third anti-reflection layer 632 may be oxide layers. For example, the first sub-third anti-reflection layer 631 may include niobium pentoxide (Nb ₂ O ₅ ). In addition, the second sub-third anti-reflection layer 632 may include silicon dioxide (SiO ₂ ).

The first sub-third anti-reflection layer 631 and the second sub-third anti-reflection layer 632 may be arranged to have similar thicknesses to each other.

The first sub-third anti-reflection layer 631 and the second sub-third anti-reflection layer 632 may be buffer layers that reduce a difference in refractive index between the sensing electrode 300 and the substrate 100 .

That is, the first sub-third anti-reflection layer 631 and the second sub-third anti-reflection layer 632 may be refractive index matching layers. Accordingly, it is possible to prevent the sensing electrode 300 from being seen from the outside, thereby improving visibility.

The first anti-reflection layer 610 is disposed on one surface of the sensing electrode 300 to reduce the amount of light reflected from the sensing electrode 300 .

The first anti-reflection layer 610 may be arranged to have a thickness of about 100 nm or less. In detail, the first anti-reflection layer 610 may be arranged to have a thickness of about 70 nm to about 100 μm. In more detail, the first anti-reflection layer 610 may be arranged to have a thickness of about 70 nm to about 80 μm.

When the thickness of the first anti-reflection layer 610 exceeds about 100 nm, the overall thickness of the touch window may be increased by the thickness of the first anti-reflection layer 610 and visibility may be reduced due to seeing the first anti-reflection layer 610 . In addition, light transmittance is lowered by the first anti-reflection layer 601, and thus, visibility of an image realized on the active region may be lowered.

In addition, when the thickness of the first anti-reflection layer 610 is less than about 70 nm, the anti-reflection effect provided by the first anti-reflection layer may be reduced.

That is, reflectivity of light reflected from the sensing electrode may be reduced by the first anti-reflection layer disposed on one surface of the sensing electrode, and thus, visibility may be improved.

The second anti-reflection layer 620 may be disposed on the other surface of the substrate 100 . The second anti-reflection layer 620 may include at least two layers. That is, the second anti-reflection layer 620 may include a plurality of layers.

The second anti-reflective layer 620 may include a first sub-second anti-reflective layer 621 and a second sub-second anti-reflective layer 622 . In detail, the second anti-reflection layer 620 may include a first sub-second anti-reflection layer 621 disposed on the other surface of the substrate 100 and a second sub-second anti-reflection layer disposed on the first sub-second anti-reflection layer 621 . reflective layer 622 .

The first sub-second anti-reflection layer 621 and the second sub-second anti-reflection layer 622 may have different refractive indices from each other. In detail, the refractive index of the first sub-second anti-reflection layer 621 may be greater than the refractive index of the second sub-second anti-reflection layer 622 . That is, the first sub-second anti-reflection layer 621 may be a high-refraction layer, and the second sub-second anti-reflection layer 622 may be a low-refraction layer.

The refractive index of the first sub-second anti-reflection layer 621 may be about 2.2 to about 2.4. In addition, the refractive index of the second sub-second anti-reflection layer 622 may be about 1.3 to about 1.5.

The first sub-second anti-reflection layer 621 and the second sub-second anti-reflection layer 622 may be oxide layers. For example, the first sub-second anti-reflection layer 621 may include titanium dioxide (TiO ₂ ). In addition, the second sub-second anti-reflection layer 622 may include silicon dioxide (SiO ₂ ).

The first sub-second anti-reflection layer 621 and the second sub-second anti-reflection layer 622 may be arranged to have similar thicknesses to each other.

The first sub-second anti-reflection layer 621 and the second sub-second anti-reflection layer 622 may be disposed in a plurality of layers on the other surface of the substrate 100 . In detail, the first sub-second anti-reflection layers 621 and the second sub-second anti-reflection layers 622 may be arranged in a plurality of layers to be alternately arranged on the other surface of the substrate 100 .

The touch window according to this embodiment can reduce reflectivity and have improved visibility. In detail, the anti-reflection layer is disposed on one surface of the sensing electrode so that the amount of light reflected from the sensing electrode may be reduced.

In addition, another anti-reflection layer is disposed on one surface of the substrate, so that the amount of light reflected from the substrate can be reduced.

Accordingly, reflectivity of light reflected from the substrate and the sensing electrodes may be reduced.

In addition, a refractive index matching layer that reduces a difference in refractive index between the sensing electrode and the substrate is disposed on the other surface of the substrate, so that the electrode pattern can be prevented from being seen from the outside, thereby improving visibility of the touch window.

Therefore, the touch window according to this embodiment may have low reflectivity and improved visibility.

The above touch window may be applied to a touch window by being coupled to a display panel. For example, the touch window may be coupled to the display panel through an adhesive layer.

Referring to FIG. 5 , a touch device according to an embodiment may include a touch window disposed on a display panel 900 .

In detail, referring to FIG. 5 , a touch device may be formed by coupling the substrate 100 and the display panel 900 to each other. The substrate 100 and the display panel 900 may be adhered to each other through the adhesive layer 800 . For example, the substrate 100 and the display panel 900 may be combined with each other through an adhesive layer 800 including optical clear adhesive (OCA) or optical resin (OCR).

The display panel 900 may include a first substrate 910 and a second substrate 920 .

When the display panel 900 is a liquid crystal display panel, the display panel 900 may be formed in a structure in which a first substrate 910 including a thin film transistor (TFT) and a pixel electrode is combined with a second substrate including a color filter layer, in which A liquid crystal layer is inserted between the first substrate and the second substrate.

Also, the display panel 900 may be a liquid crystal display panel having a color filter on transistor (COT) structure, in which TFTs, color filters, and a black matrix are formed on the first substrate 910, and the second substrate 920 is connected to the first substrate 910. In combination, a liquid crystal layer is inserted between the first substrate and the second substrate. That is, TFTs may be formed on the first substrate 910, a protective layer may be formed on the TFTs, and a color filter layer may be formed on the protective layer. In addition, a pixel electrode in contact with the TFT is formed on the first substrate 910 . 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 be formed to function as the black matrix together with its inherent function.

In addition, when the display panel 900 is a liquid crystal display panel, the display device may further include a backlight unit for providing light at the back of the display panel 900 .

When the display panel 900 is an organic light emitting display panel, the display panel 900 includes a self-emitting device that does not require any additional light source. In the display panel 900, a thin film transistor is formed on a first substrate 910, and an organic light emitting device in contact with the thin film transistor is formed. An 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, the display panel 900 may further include a second substrate 920 on the organic light emitting device, which serves as an encapsulation substrate for encapsulation.

Touch windows according to first to fourth embodiments will be described with reference to FIGS. 6 to 15 .

Each of the touch windows according to the first to fourth embodiments may include a substrate 100 and sensing electrodes 300 disposed on the substrate 100, and the substrate 100 may have a phase difference of 4500 nm or more in its thickness direction. .

Each of the touch windows according to the first to fourth embodiments may further include a hard coat layer 700 disposed on the substrate 100 , and the hard coat layer 700 may be disposed between the substrate 100 and the sensing electrode 300 . In this case, the substrate 100 may have an optically anisotropic property, and may have a phase difference of 4500nm to 10000nm in a thickness direction thereof. The substrate 100 may have a thickness of 100 μm or less.

Another drawing according to the first embodiment will be described with reference to FIG. 6 . In FIG. 6 , the same elements are denoted by the same reference numerals, and repeated descriptions will be omitted.

The touch window according to the first embodiment may include a substrate 100 , a cover substrate 101 , a decoration plate 200 , a sensing electrode 300 , a wire electrode 400 , a hard coat layer 700 and an adhesive layer 800 .

Substrate 100 may be rigid or flexible. The substrate 100 may include glass or plastic. For example, the substrate 100 may include polyethylene terephthalate (PET), polycarbonate (PC), cycloolefin copolymer (COC), cycloolefin polymer (COP), and polymethylmethacrylate (PPMA ) in any one.

The substrate 100 may be an optically anisotropic substrate. For example, the substrate 100 may be an optically anisotropic film. For example, the substrate 100 may be an optically anisotropic film having a phase difference of λ/4. That is, since the substrate 100 is an optically anisotropic substrate, it is possible to prevent a blackout phenomenon that may be observed by a user wearing polarized sunglasses when an optically isotropic substrate is used.

The substrate 100 may have a phase difference of 4500 nm or more in its thickness direction. For example, the substrate 100 may have a phase difference of 4500 nm to 10000 nm in its thickness direction. For example, the substrate 100 may have a phase difference of 4500 nm to 8000 nm in its thickness direction.

The substrate 100 has a phase difference of 4500 nm or more in its thickness direction due to stretching in one axial direction. For example, since PET is stretched in one axial direction, the substrate 100 may have a phase difference of 4500 nm or more in its thickness direction. That is, the substrate 100 may be a uniaxial retardation film.

When the phase difference in the thickness direction of the substrate 100 is less than 4500 nm, a rainbow phenomenon may occur. Specifically, when polarized sunglasses are used, a rainbow phenomenon can be easily observed.

When the phase difference in the thickness direction of the substrate 100 is 10000 nm, the thickness of the touch window increases. In detail, since the thickness of the substrate 100 increases, the phase difference in the thickness direction of the substrate 100 may have a larger value.

Since the substrate 100 is formed by stretching, the phase difference in the thickness direction of the substrate 100 may be 4500 nm or more. Therefore, the touch window according to this embodiment can prevent the rainbow phenomenon.

That is, the touch window including the substrate 100 may have improved visibility.

The thickness of the substrate 100 may be 100 μm or less. For example, the thickness of the substrate 100 may be 50 μm to 100 μm. For example, the thickness of the substrate 100 may be 80 μm to 100 μm.

When the thickness of the substrate 100 exceeds 100 μm, the thickness of the touch window may increase.

That is, since the substrate 100 is arranged to have a thickness of 100 μm or less, a touch window including the substrate 100 may be reduced and light transmittance may be improved.

The sensing electrodes 200 and the wire electrodes 300 may be disposed on the same surface of the substrate 100 . Therefore, the thickness of the touch window can be reduced.

A hard coat layer 700 may also be disposed on the substrate 100 . A hard coat layer 700 may be disposed between the substrate 100 and the sensing electrode 300 .

For example, referring to FIG. 6 , a hard coat layer 700 may be disposed on one surface of a substrate, and the first sensing electrode 310 and the second sensing electrode 320 may be disposed on the hard coat layer 700 .

A hard coat layer 700 may be disposed on the active area AA and the unactive area UA of the substrate 100 .

The hard coat layer 700 may have a thickness of 5 μm or less. For example, the hard coat layer 700 may have a thickness of 3 μm or less. For example, the hard coat layer 700 may have a thickness of 1 μm to 3 μm.

When the thickness of the hard coat layer 700 exceeds 5 μm, the thickness of the touch window may be increased.

The hard coat layer 700 may be formed by coating and curing on one surface of the substrate 100 .

A separate cover substrate 101 may also be disposed on the substrate 100 . That is, the sensing electrodes 300 and the wire electrodes 400 may be supported by the substrate 100 , and the substrate 100 and the cover substrate 101 may be directly or indirectly adhered to each other through the adhesive layer 800 . Accordingly, the cover substrate 101 and the substrate 100 may be independently formed, and thus are advantageous in mass production of touch windows.

For example, the hard coat layer 700 may be disposed on the substrate 100, the sensing electrode 300 and the wire electrode 400 may be disposed on the hard coat layer 700, the adhesive layer 800 may be disposed on the sensing electrode 300 and the wire electrode 400, and The cover substrate 101 may be disposed on the adhesive layer 800 .

The cover substrate 101 may have a greater thickness than the substrate 100 . The cover substrate 101 may have greater hardness than the substrate 100 . The cover substrate 101 and the substrate 100 may include a transparent material. That is, the cover substrate 101 and the substrate 100 may be transparent.

The cover substrate 101 may include a material corresponding to or similar to that of the above-described substrate 100 .

The cover substrate 101 may be rigid or flexible. For example, the cover substrate 101 may include glass or plastic. In detail, the cover substrate 101 may include chemically tempered/semi-tempered glass (such as soda lime glass or aluminosilicate glass), reinforced or flexible plastic (such as polyimide (PI), polyethylene terephthalate Ethylene glycol ester (PET), propylene glycol (PPG) or polycarbonate (PC)) or sapphire.

In addition, the cover substrate 101 may include an optically isotropic film. For example, the cover substrate 101 may include cycloolefin copolymer (COC), cycloolefin polymer (COP), optically isotropic polycarbonate (PC), optically isotropic polymethylmethacrylate (PPMA), or the like.

Sapphire is a material having excellent electrical characteristics such as permittivity, so that touch response speed can be significantly increased and spatial touch (eg, hovering) can be easily realized. In addition, since sapphire has high surface hardness, sapphire may be applied to a cover substrate. Here, hovering refers to a technique for identifying coordinates even in locations spaced a short distance from the display.

The decoration layer 200 may be disposed on the substrate 100 . For example, the decoration layer 200 may be disposed on the unactive area UA of the substrate 100 . For example, the decoration layer 200 may be disposed between the substrate 100 and the cover substrate 101 . For example, the decoration board 200 may be disposed on one surface of the cover substrate 101 to be in contact with the cover substrate 101 .

The decoration layer 200 may be formed as a film. Accordingly, when the cover substrate 101 is flexible or includes a curved surface, the decoration layer 200 may be easily disposed on one surface of the cover substrate 101 . In addition, separation of the decoration layer 200 may be prevented, thereby improving reliability of the touch window.

A display panel including polarizing plates may also be disposed under the substrate 100 . The display panel may be an organic light emitting display panel or a liquid crystal display panel.

The substrate 100 may change light transmitted through the polarizer. For example, the substrate 100 may change the axis of light transmitted through the polarizing plate. For example, the axis of light linearly polarized by passing through the polarizing plate may be changed to light circularly polarized by passing through the substrate 100 .

When the uniaxial stretching direction of the substrate is x, the uniaxial stretching direction of the substrate 100 and the polarization direction of the polarizer may form an angle of 45 degrees to about 45 degrees with x. Here, the angle may be an angle viewed from the front of the touch window according to this embodiment.

For example, since the substrate 1000 is arranged at an angle of 45 degrees to the display panel including the polarizing plate, when the light passing through the display panel including the polarizing plate vibrates in the direction of one axis, the light passing through the substrate 100 may be in two directions. Vibration in the direction of the axis makes it possible to prevent the blackout phenomenon.

In detail, since the substrate 100 is arranged at an angle of 45 degrees to the display panel including the polarizer, the light passing through the display panel including the polarizer can vibrate in the direction of the x-axis or the y-axis, and the light passing through the substrate 100 It is possible to vibrate in directions of both the x-axis and the y-axis, so that the blackout phenomenon can be prevented. Therefore, rainbow phenomenon can be prevented even when polarized sunglasses are used.

A touch window according to a second embodiment will be described with reference to FIGS. 7 and 8 . In FIGS. 7 and 8 , the same elements are denoted by the same reference numerals, and repeated descriptions will be omitted.

In the touch window according to the second embodiment, the first hard coat layer 710 may be disposed on one surface of the substrate 100, the first sensing electrode 310 may be disposed on the first hard coat layer 710, and the second hard coat layer 710 may be disposed on one surface of the substrate 100. A coating layer 720 may be disposed on the other surface opposite to one surface of the substrate 100 , and the second sensing electrode 320 may be disposed on the second hard coating layer 720 .

Referring to FIGS. 7 and 8 , in the touch window according to the second embodiment, the first sensing electrodes 310 and the second sensing electrodes 320 may be arranged on both surfaces of the substrate 100 , respectively.

For example, the first sensing electrodes 310 extending in one direction and the first electrode lines 410 connected to the first sensing electrodes 310 may be arranged on one surface of the substrate 100, and the first sensing electrodes 310 extending in a direction different from the one direction The second sensing electrodes 320 and the second wire electrodes 420 connected to the second sensing electrodes 320 may be disposed on the other surface of the substrate 100 .

A hard coat layer 700 may be disposed between the substrate 100 and the sensing electrode 300 . The hard coat layer 700 may include a first hard coat layer 710 and a second hard coat layer 720 .

For example, the first hard coat layer 710 may be disposed on one surface of the substrate 100, the first sensing electrodes 310 and the first electrode lines 410 may be disposed on the first hard coat layer 710, and the second hard coat layer 720 are disposed on the other surface opposite to one surface of the substrate 100 , and the second sensing electrodes 320 and the second wire electrodes 420 may be disposed on the second hard coat layer 720 .

In addition, the cover substrate 101 may be disposed on one surface of the substrate 100, and the substrate 100 and the cover substrate 101 may be bonded to each other through an adhesive layer 800 including optical clear adhesive (OCA) or optical resin (OCR).

A touch window according to a third embodiment will be described with reference to FIGS. 9 and 10 . In FIGS. 9 and 10 , the same elements are denoted by the same reference numerals, and repeated descriptions will be omitted.

In the touch window according to the third embodiment, the substrate 110 and the second substrate 120, the first hard coat layer 710 may be disposed on the first substrate 110, and the first sensing electrodes 310 may be disposed on the first hard coat layer. On 710 , a second hard coat layer 720 may be disposed on the second substrate 120 , and the second sensing electrode 320 may be disposed on the second hard coat layer 720 .

The substrate 100 may include a first substrate 110 and a second substrate 120 .

Referring to FIGS. 9 and 10 , the touch window according to the third embodiment may include a cover substrate 101 , a first substrate 110 , a second substrate 120 , first sensing electrodes 310 on the first substrate 110 , and electrodes on the second substrate 120 . The second sensing electrode 320 .

In detail, the first sensing electrodes 310 extending in one direction and the first wire electrodes 410 connected to the first sensing electrodes 310 may be arranged on one surface of the substrate 110 and extend in a direction different from the one direction. The second sensing electrodes 320 and the second line electrodes 420 connected to the second sensing electrodes 320 may be disposed on one surface of the second substrate 120 .

Hard coat layers may be disposed on the first substrate 110 and the second substrate 120, respectively.

For example, a first hard coat layer 710 may be disposed on the first substrate 110 , and a first sensing electrode 310 and a first wire electrode 410 may be disposed on the first hard coat layer 710 . In addition, a second hard coat layer 720 may be disposed on the second substrate 120 , and the second sensing electrodes 320 and the second electrode lines 420 may be disposed on the second hard coat layer 720 .

The adhesive layer 800 may be disposed between the cover substrate 101 and the first substrate 110 and between the first substrate 110 and the second substrate 120, respectively. Accordingly, the cover substrate 101, the first substrate 110, and the second substrate 120 may be combined with each other.

Each of the first substrate 110 and the second substrate 120 may have a phase difference of 4500 nm or more in a thickness direction thereof.

When any one of the first substrate 110 and the second substrate 120 is an optically anisotropic film, a rainbow phenomenon occurs. Specifically, when the display panel is an organic light emitting display panel, a rainbow phenomenon occurs.

That is, in the touch window according to this embodiment, both the first substrate 110 and the second substrate 120 have a phase difference of 4500 nm or more in the thickness direction thereof and a thickness of 100 μm or less, so that the rainbow phenomenon and blacksight phenomenon. Also, since the thickness of the touch window is reduced, flexible properties may be improved.

A display panel including polarizing plates may also be disposed under the second substrate 120 . The display panel may be an organic light emitting display panel or a liquid crystal display panel.

The first substrate 110 and the second substrate 120 may change light transmitted through the polarizing plate. For example, the first substrate 110 and the second substrate 120 may change the axis of light transmitted through the polarizing plate.

When the uniaxial stretching direction of the second substrate 120 is x, the uniaxial stretching direction of the first substrate 110 may form an angle of 90 degrees to about 90 degrees with x.

When the uniaxial stretching direction of the second substrate 120 is x, the uniaxial stretching direction of the second substrate 120 and the polarization direction of the polarizer may form an angle of 45 degrees to about 45 degrees with x. Here, the angle may be an angle viewed from the front of the touch window according to this embodiment.

For example, since the second substrate 120 and the display panel including the polarizing plate are arranged at an angle of 45 degrees, when the light passing through the display panel including the polarizing plate vibrates in the direction of one axis, the light passing through the second substrate 120 It is possible to vibrate in the directions of two axes, so that the blackout phenomenon can be prevented. Therefore, even when polarized sunglasses are used, the rainbow phenomenon can be prevented.

A touch window according to a fourth embodiment will be described with reference to FIGS. 11 and 12 . In FIGS. 11 and 12 , the same elements are denoted by the same reference numerals, and repeated descriptions will be omitted.

The touch window according to the fourth embodiment may further include an intermediate layer 850, the hard coat 700 may be disposed on one surface of the substrate 100, the first sensing electrode 310 may be disposed on the hard coat 700, and the second sensing The measuring electrode 320 may be disposed on one surface of the intermediate layer 850 .

Referring to FIGS. 11 and 12 , the first sensing electrode 310 and the first and second wire electrodes 410 and 420 may be disposed on the intermediate layer 850 , and the cover substrate 101 may be disposed on the intermediate layer 850 .

The intermediate layer 850 may include a material different from that of the first substrate 100 . For example, the intermediate layer 850 may include a dielectric material. For example, the intermediate layer 850 may include: an insulating group including a halogen compound of an alkali metal or an alkaline earth metal (such as LiF, KCl, CaF ₂ , or MgF ₂ ) or fused silica (such as SiO ₂ , SiNX, etc.); a semiconductor group, It includes InP or InSb; transparent oxides for semiconductors or dielectrics including In compounds such as ITO or IZO mainly used for transparent electrodes, or for semiconductors or dielectrics such as ZnOx, ZnS, ZnSe, TiOx, WOx, MoOx, or ReOx Transparent oxides for semiconductors or dielectrics; organic semiconductor groups including Alq ₃ , NPB, TAPC, 2TNATA, CBP or Bphen; and low dielectric materials such as their silsesquioxane or derivatives ((H—SiO ₃ / ₂ )n), siloxane ((CH ₃ —SiO ₃ / ₂ )n), porous silica or porous silica doped with fluorine or carbon atoms, porous zinc oxide (ZnOx), cyclized fluoropolymer (CYTOP) or mixtures thereof.

The intermediate layer 850 may have a visible light transmittance of about 75% to about 99%. In this case, the thickness of the intermediate layer 850 may be smaller than that of the substrate 100 . In detail, the thickness of the intermediate layer 850 may be about 0.01 to about 0.1 times the thickness of the substrate 100 . For example, the thickness of the substrate 100 may be about 0.1 mm, and the thickness of the intermediate layer 850 may be about 0.001 mm. However, the present disclosure is not limited thereto.

In addition, the cross-sectional area of the intermediate layer 850 may be different from that of the substrate 100 . In detail, the cross-sectional area of the intermediate layer 850 is smaller than the cross-sectional area of the substrate 100 .

The intermediate layer 850 may be directly disposed on the top surface of the substrate 100 . That is, the intermediate layer 850 may be formed by directly coating a dielectric material on the top surface of the substrate 100 on which the first sensing electrodes 310 are disposed. After that, the second sensing electrode 320 may be disposed on the intermediate layer 850 .

Since the intermediate layer 850 includes an adhesive material, an adhesive layer disposed between the intermediate layer 850 and the substrate 100 may be omitted.

Meanwhile, the intermediate layer 850 and the cover substrate 101 may adhere to each other through the adhesive layer.

That is, in the touch window according to this embodiment, the hard coat layer 700 may be disposed on one surface of the substrate 100, and the first sensing electrode 310, the first wire electrode 310, and the second wire electrode 420 may be disposed on the hard coat layer. On the layer 700 , the intermediate layer 850 may be disposed on the first sensing electrode 310 , the first wire electrode 410 and the second wire electrode 420 , and the second sensing electrode 320 may be disposed on one surface of the intermediate layer 850 . Although not shown in these figures, it is apparent that a hard coat layer may be disposed on one surface of the intermediate layer 850 .

The above-mentioned touch window may be applied to a touch device by being coupled with a display panel. For example, the touch window may be coupled to the display panel through an adhesive layer.

Referring to FIG. 13 , a touch device according to an embodiment may include a touch window disposed on a display panel 900 . In detail, referring to FIG. 13 , a touch device may be formed by coupling the substrate 110 and the display panel 900 to each other. The substrate 100 and the display panel 900 may be adhered to each other by the adhesive layer 800 . As depicted in FIG. 5 , the display panel 900 may include a first substrate 910 and a second substrate 920 . In FIG. 13 , the same elements are denoted by the same reference numerals, and repeated descriptions will be omitted.

Referring to FIG. 14 , a touch device according to an embodiment may include a touch window integrally formed with a display panel 900 . That is, a substrate supporting at least one sensing electrode may be omitted.

In detail, at least one sensing electrode may be disposed on at least one surface of the display panel 900 . That is, at least one sensing electrode may be formed on at least one surface of the first substrate 910 and the second substrate 920 .

In this case, at least one sensing electrode may be formed on the top surface of the substrate disposed at the upper portion of the display panel 900 .

Referring to FIG. 14 , the first sensing electrode 310 may be disposed on one surface of the substrate 100 . In addition, a first line connected to the first sensing electrode 310 may be arranged. In addition, the second sensing electrode 320 may be disposed on one surface of the display panel 900 . In addition, a second line connected to the second sensing electrode 320 may be arranged.

The adhesive layer 800 is disposed between the substrate 100 and the display panel 900 so that the substrate 100 and the display panel 900 may be combined with each other.

In addition, a polarizing plate may also be disposed under the substrate 100 . The polarizer may be a linear polarizer or an anti-reflection polarizer. For example, when the display panel 900 is a liquid crystal display panel, the polarizer may be a linear polarizer. In addition, when the display panel 900 is an organic light emitting display panel, the polarizer may be an anti-reflection polarizer.

In the touch device according to this embodiment, at least one substrate supporting the sensing electrodes may be omitted. Therefore, a thin and lightweight touch device can be formed.

Referring to FIG. 15 , a touch device according to an embodiment may include a touch window integrally formed with a display panel 900 . That is, a substrate supporting at least one sensing electrode may be omitted.

For example, sensing electrodes serving as sensors disposed in the active region to sense touch and lines applying electrical signals to the sensing electrodes may be formed within the display panel. In detail, at least one sensing electrode or at least one wire may be formed within the display panel.

The display panel 900 includes a first substrate 910 and a second substrate 920 . In this case, at least one of the first sensing electrode 310 and the second sensing electrode 320 may be disposed between the first substrate 910 and the second substrate 920 . That is, at least one sensing electrode may be disposed on at least one surface of the first substrate 910 or the second substrate 920 .

Referring to FIG. 15 , first sensing electrodes 310 may be disposed on one surface of the substrate 100 , and further, first lines connected to the first sensing electrodes 310 may be disposed. In addition, second sensing electrodes and second lines may be formed between the first substrate 910 and the second substrate 920 . That is, the second sensing electrodes 320 and the second lines may be arranged inside the display panel 900 , and the first sensing electrodes 310 and the first lines may be arranged outside the display panel 900 .

The second sensing electrodes 320 and the second lines may be formed on the top surface of the first substrate 910 or the back surface of the second substrate 920 .

In addition, a polarizing plate may also be disposed under the substrate 100 .

When the display panel 900 is a liquid crystal display panel and the second sensing electrodes are formed on the top surface of the first substrate 910, the second sensing electrodes may be formed together with thin film transistors (TFTs) or pixel electrodes. Also, when the second sensing electrodes are formed on the back surface of the second substrate 920, a color filter layer may be formed on the second sensing electrodes, or the second sensing electrodes may be formed on the color filter layer. When the display panel 900 is an organic light emitting display panel and the second sensing electrodes are formed on the top surface of the first substrate 910, the second sensing electrodes may be formed together with TFTs or organic light emitting devices.

In the touch device according to this embodiment, at least one substrate supporting the sensing electrodes may be omitted. Therefore, a thin and lightweight touch device can be formed.

In addition, the sensing electrodes and lines are formed together with devices formed in the display panel, so that it is possible to simplify the process and reduce the cost.

Hereinafter, an example of a touch device to which the touch window according to the above-described embodiments is applied will be described with reference to FIGS. 16 to 19 .

Referring to FIG. 16 , a mobile terminal is shown as one example of a touch device. A mobile terminal may comprise an active area AA and an unactive area UA. The active area AA may sense a touch signal by a finger's touch, and a command icon pattern part, a logo, etc. may be formed in the unactive area UA.

Referring to FIG. 17, the touch window is applicable not only to a touch device such as a mobile terminal but also to a vehicle navigation system.

Referring to FIG. 18 , the touch window may include a flexible touch window capable of being bent. Accordingly, a touch device including a flexible touch window may be a flexible touch device device. Thus, the user can bend or bend the flexible touch window by the user's hand. The flexible touch window can be applied to wearable touch.

Referring to FIG. 19 , the touch window can also be applied to an interior part of a vehicle. That is, the touch window may be applied to various parts in the vehicle. Therefore, the touch window can be applied to an instrument panel as well as a personal navigation display (PND), so that a central information display (CID) can be realized. However, the present disclosure is not limited thereto, and it is obvious that the touch device can be used for various electric appliances.

While some embodiments of the present disclosure have been described for purposes of illustration, it will be apparent to those skilled in the art that various modifications and changes can be made within the scope of the disclosure without departing from the essential characteristics of the disclosure.

Therefore, the foregoing embodiments should be considered not to limit the technical spirit of the present disclosure, but provided for illustrative purposes so that those skilled in the art can fully understand the spirit of the present disclosure.

The scope of the present disclosure should not be limited to the foregoing embodiments, but is defined by the appended claims. Technical spirits within substantially the same scope as the scope of the present disclosure will be considered to fall within the scope of the present disclosure defined by the claims.

Claims (14)

1. A touch window, including Substrate; sensing electrodes arranged on one surface of the substrate; a first anti-reflection layer disposed on one surface of the sensing electrode; and a second antireflection layer disposed on the other surface of the substrate, wherein the first anti-reflection layer and the second anti-reflection layer comprise different materials from each other, Wherein, the first anti-reflection layer is arranged in direct contact with the sensing electrode. 2. The touch window of claim 1, wherein the first anti-reflection layer comprises aluminum oxide, and Wherein, the second anti-reflection layer includes at least one of silicon dioxide (SiO ₂ ) and titanium dioxide (TiO ₂ ). 3. The touch window according to claim 1, wherein the second anti-reflection layer comprises a first sub-second anti-reflection layer and a second sub-second anti-reflection layer arranged on the first sub-second anti-reflection layer. anti-reflective layer. 4. The touch window according to claim 3, wherein the first anti-reflection layer, the first sub-second anti-reflection layer, and the second sub-second anti-reflection layer have different refractive indices from each other. 5. The touch window according to claim 4, wherein a refractive index of the first sub-second anti-reflection layer is greater than a refractive index of the second sub-second anti-reflection layer. 6. The touch window according to claim 4, wherein the refractive index of the first anti-reflection layer is smaller than the refractive index of the first sub-second anti-reflection layer, and Wherein, the refractive index of the first anti-reflection layer is greater than the refractive index of the second sub-second anti-reflection layer. 7. The touch window according to claim 1, further comprising: a third anti-reflection layer disposed on the other surface of the sensing electrode, Wherein, the third anti-reflection layer includes a first sub-third anti-reflection layer and a second sub-third anti-reflection layer arranged on the first sub-third anti-reflection layer, Wherein, the refractive index of the first sub-third anti-reflection layer is greater than the refractive index of the second sub-third anti-reflection layer. 8. The touch window according to claim 1, wherein the first anti-reflection layer has a thickness of 70 μm to 100 μm. 9. The touch window according to claim 1, wherein the sensing electrodes comprise first sensing electrodes and second sensing electrodes, Wherein, the substrate has a phase difference of 4500 nm or more in its thickness direction. 10. The touch window according to claim 1, further comprising: a hard coating layer disposed on the substrate, Wherein, the hard coating is arranged between the substrate and the sensing electrode. 11. The touch window according to claim 1, wherein the substrate has an optically anisotropic property, and a phase difference in a thickness direction of the substrate is 4500nm to 10000nm. 12. The touch window of claim 1, wherein the substrate has a thickness of 100 [mu]m or less. 13. A touch device, comprising: The touch window according to any one of claims 1 to 8; and A display panel is arranged on the touch window. 14. The touch device of claim 13, wherein the substrate comprises a cover substrate.