KR20170112803A - Touch device and touch divice - Google Patents

Abstract

A touch window according to an embodiment includes a substrate accommodated in a cover case, the substrate including a valid region and a non-valid region; And at least one pressure sensing member disposed on the ineffective area, wherein the pressure sensing member comprises: at least one pressure sensing electrode disposed on the substrate; And a piezoresistive electrode disposed on the pressure sensing electrode.

Description

TOUCH WINDOW AND TOUCH DEVICE [0001]

Embodiments relate to a touch window and a touch device.

[0002] In recent years, a touch window has been applied to input images in a manner of touching an input device such as a finger or a stylus to an image displayed on a display device in various electronic products.

Such a touch window can be largely divided into a resistive touch window and a capacitive touch window. In the resistive touch window, the glass and the electrode are short-circuited by the pressure of the input device and the position is detected. The capacitive touch window senses the change in capacitance between the electrodes when a finger touches them, and the position is detected.

Recently, attention has been paid to a pressure sensor that detects not only a position according to a touch but also a pressure due to a force of a touch or a pressure, and performs various operations.

In the case of a display device formed by combining such a pressure sensor and a touch window, there is a problem that the thickness can be increased due to the configuration of the touch window and the pressure sensor.

Therefore, a touch window having a new structure capable of solving the above problems is required.

The embodiment attempts to provide a touch window capable of realizing a slim thickness.

A touch window according to an embodiment includes a substrate accommodated in a cover case, the substrate including a valid region and a non-valid region; And at least one pressure sensing member disposed on the ineffective area, wherein the pressure sensing member comprises: at least one pressure sensing electrode disposed on the substrate; And a piezoresistive electrode disposed on the pressure sensing electrode.

The touch device according to the embodiment may have an electrode for sensing pressure directly on the substrate. In detail, the pressure sensing electrode can be disposed on the ineffective area of the substrate.

Thus, the substrate and the pressure sensing electrode can be integrated.

Therefore, the touch device according to the embodiment can omit a separate pressure sensing layer for sensing the pressure.

Therefore, it is possible to prevent an increase in the thickness of the touch device due to the separate pressure sensing layer, thereby realizing a touch device with a slim thickness.

In addition, by disposing the pressure sensing electrode on the ineffective area of the substrate, the arrangement position of the touch sensing electrode is not limited, so that it can be applied to various types of touch devices.

1 is an exploded perspective view of a touch device according to an embodiment.
2 is a cross-sectional view of a touch device according to an embodiment.
3 is a plan view of the substrate on which the pressure sensing member is disposed.
FIG. 4 is a cross-sectional view taken along line AA 'of FIG. 3. FIG.
5 is another plan view of the substrate on which the pressure sensing member is disposed.
6 is a cross-sectional view showing the BB 'region of FIG. 5 cut away.
7 is another cross-sectional view of the substrate on which the pressure sensing member is disposed.
8 is a cross-sectional view of the piezoresistive electrode according to the embodiment.
9 to 13 are views showing an example of a touch device to which the touch device according to the embodiments is applied.

In the description of the embodiments, it is to be understood that each layer (film), area, pattern or structure may be referred to as being "on" or "under / under" Quot; includes all that is formed directly or through another layer. The criteria for top / bottom or bottom / bottom of each layer are described with reference to the drawings.

Also, when a part is referred to as being "connected" to another part, it includes not only a case of being "directly connected" but also a case of being "indirectly connected" with another member in between. Also, when an element is referred to as "comprising ", it means that it can include other elements, not excluding other elements unless specifically stated otherwise.

The thickness or the size of each layer (film), region, pattern or structure in the drawings may be modified for clarity and convenience of explanation, and thus does not entirely reflect the actual size.

Hereinafter, a touch window and a touch device including the same according to an embodiment will be described with reference to FIGS. 1 to 3. FIG.

1 to 3, the touch device according to the embodiment may include a cover case 100, a display panel 200, and a touch window.

The cover case 100 may receive the display panel 200 and the touch window. That is, the display panel 200 and the touch window may be disposed inside the cover case 100.

The cover case 100 may be rigid or may comprise a flexible material. For example, the cover case 100 may include metal or plastic. For example, the cover case 100 may include reinforced or flexible plastic such as polyimide (PI), polyethylene terephthalate (PET), propylene glycol (PPG) polycarbonate (PC) can do.

The cover case 100 may be a middle frame. For example, the cover case 100 may be a middle frame in which a plurality of components are mounted for driving a touch device.

The cover case 100 may include a lower support portion 110 and a side support portion 120. In detail, the cover case 100 may include a side support part 120 bending and extending in an edge area of the lower support part 110 and the lower support part 110. [ The lower support 110 and the side support 120 may be integrally formed.

The side support portion 120 may extend from the end of the lower support portion 110 in a direction different from the direction in which the lower support portion 110 extends and may be bent from the lower support portion 110.

For example, the side support 120 may be bent and extended from the end of the lower support 110 such that the lower support 110 and the side support 120 have a vertical, acute, or obtuse angle .

Although the lower support 110 has a rectangular shape in the figure, the lower support 110 may have various shapes such as a circular shape.

The side support part 120 may surround the edge area of the lower support part 110.

The side support 120 may include a first side support 121 and a second side support 122. For example, the side support 120 may include a first side support 121 extending from the edge of the lower support 110 and a second side support 121 extending from the first side support 121 to the first side support 121 And a second side support portion 122 extending and extending in the extending direction.

The first side support portion 121 and the second side support portion 122 may be integrally formed.

The first side support 121 and the second side support 122 may have different widths. In detail, the width W1 of the first side support 121 may be greater than the width W2 of the second side support 122.

Accordingly, the upper surface of the first side support 121 can be partially exposed. The first side support portion 121 may be formed with a step with the lower support portion 110. In addition, the side surface of the second side support portion 122 may be exposed.

The display panel 200 may be disposed inside the cover case 100. For example, the display panel 200 may be disposed on the lower support 110 inside the cover case 100.

The display panel 200 may include a first substrate 210 and a second substrate 220.

When the display panel 200 is a liquid crystal display panel, the display panel 200 includes a first substrate 210 including a thin film transistor (TFT) and a pixel electrode, a second substrate 210 including color filter layers, The liquid crystal layer 220 may be bonded together with the liquid crystal layer interposed therebetween.

The display panel 200 may include a thin film transistor, a color filter, and a black matrix formed on the first substrate 210, and a second substrate 220 may be bonded to the first substrate 210 with a liquid crystal layer interposed therebetween Or a liquid crystal display panel having a COT (color filter on transistor) structure. That is, a thin film transistor may be formed on the first substrate 210, a protective film may be formed on the thin film transistor, and a color filter layer may be formed on the protective film. In addition, a pixel electrode is formed on the first substrate 210 in contact with the thin film transistor. At this time, 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 serve also as the black matrix.

In addition, when the display panel 200 is a liquid crystal display panel, the display device may further include a backlight unit for providing light from the back surface of the display panel 200.

When the display panel 200 is an organic light emitting display panel, the display panel 200 includes a self-luminous element that does not require a separate light source. In the display panel 200, a thin film transistor is formed on the first substrate 210, and an organic light emitting element which is in contact with the thin film transistor is formed. The organic light emitting device may include an anode, a cathode, and an organic light emitting layer formed between the anode and the cathode. The organic light emitting device may further include a second substrate 220 serving as an encapsulation substrate for encapsulation.

The touch window may be disposed inside the cover case 100. The touch window may include a substrate 300 and a pressure sensing member 400.

The substrate 300 may be disposed inside the cover case 100. In detail, the substrate 300 can be received in the cover case.

The substrate 300 may be disposed on the display panel 200 in the cover case 100. The substrate 300 and the display panel 200 may be adhered to each other. For example, the substrate 300 and the display panel 200 may be bonded to each other through an optical transparent adhesive (OCA) or an optical transparent adhesive film (OCF).

The substrate 300 may be rigid or flexible.

For example, the substrate 300 may comprise glass or plastic. In detail, the substrate 300 may include chemically reinforced / semi- toughened glass such as soda lime glass or aluminosilicate glass, or may include polyimide (PI), polyethylene terephthalate (PET) , Propylene glycol (PPG) polycarbonate (PC), or the like, or may include sapphire.

In addition, the substrate 300 may include an optically isotropic film. For example, the substrate 300 may include a cyclic olefin copolymer (COC), a cyclic olefin polymer (COP), a polycarbonate (PC), a light polymethyl methacrylate (PMMA), or the like.

Sapphire has excellent electrical properties such as dielectric constant, which not only greatly improves the speed of touch reaction but also can easily realize spatial touch such as hovering and is applicable as a cover substrate because of its high surface strength. Here, hovering means a technique of recognizing coordinates even at a small distance from the display.

Also, the substrate 300 may be curved with a partially curved surface. That is, the substrate 300 may be partially flat and partially curved with a curved surface. In detail, the end of the substrate 300 may have a curved surface or may have a curved surface with a curvature, and may be curved or bent.

In addition, the substrate 300 may be a flexible substrate having a flexible characteristic.

In addition, the substrate 300 may be a curved or bended substrate. That is, the touch device including the substrate 300 may be formed to have a flexible, curved, or bent characteristic. Accordingly, the touch device according to the embodiment is easy to carry and can be changed into various designs.

The substrate 300 may be a cover substrate. Alternatively, a separate cover substrate may be further disposed on the substrate 300.

In the substrate 300, a valid region AA and a non-valid region UA may be defined.

The display may be displayed in the effective area AA and the display may not be displayed in the non-valid area UA disposed around the valid area AA.

Also, at least one of the effective area AA and the ineffective area UA can sense the pressure and the position of an input device (e.g., a finger or a stylus pen).

Electrodes may be disposed on the substrate 300.

In detail, the pressure sensing member 400 may be disposed on the ineffective area UA. For example, a decor layer 350 may be disposed on the ineffective area UA of the substrate 300.

The decor layer 350 may be formed of a material having a predetermined color so that the wiring electrode disposed on the ineffective area, the printed circuit board connecting the wiring electrode to an external circuit, and the like can be hidden from the outside .

The decor layer 350 may have a color suitable for a desired appearance. For example, the decor layer 350 may include black or white pigment, and may represent black or white. Or various color films can be used to display various color colors such as red, blue, and the like.

A desired logo or the like may be formed on the decor layer 350 by various methods. Such a decor layer 350 may be formed by vapor deposition, printing, wet coating or adhesion.

The decor layer 350 may be disposed in at least one layer. For example, the decor layers may be arranged in one layer or in at least two layers with different widths.

The pressure sensing member 400 may be disposed on the ineffective area UA. In detail, the plurality of pressure sensing members 400 may be disposed on the ineffective area UA. That is, a plurality of pressure sensing members 400 spaced apart from each other may be disposed on the ineffective area UA.

For example, a decor layer 350 may be disposed on the ineffective area UA of the substrate 300, and the pressure sensing element 400 may be disposed on the decor layer 350, Directly or indirectly.

For example, the pressure sensing member 400 may be disposed on at least one edge region of the edge of the cover substrate. That is, the pressure sensing member 400 may be disposed on one corner of the cover substrate or may be disposed on all four corners of the cover substrate.

The pressure sensing member 400 may include a pressure sensing electrode 410 and a piezoresistive electrode 420. In detail, the pressure sensing member 400 may include a pressure sensing electrode 410 on the ineffective area UA and a piezoresistive electrode 420 on the pressure sensing electrode 410.

3 and 4, the pressure sensing electrode 410 may include a plurality of pressure sensing electrodes. In detail, a plurality of pressure sensing electrodes spaced apart from each other may be disposed on the ineffective area UA of the substrate 300. For example, the pressure sensing electrode 410 may include a first pressure sensing electrode 411, a second pressure sensing electrode 412, and a third pressure sensing electrode 413 which are spaced apart from each other.

The piezoresistive electrode 420 may be disposed on the pressure sensing electrode 410. The piezoresistive electrode 420 may include a plurality of piezoresistive electrodes. For example, the piezoresistive electrode 420 may include a first piezoresistive electrode 421 and a second piezoresistive electrode 422 that are spaced apart from each other.

The piezoresistive electrode 420 may be disposed in contact with the pressure sensing electrode 410. In detail, the first piezoresistive electrode 421 may be disposed in contact with the first pressure sensing electrode 411 and the second pressure sensing electrode 412. For example, the first piezoresistive electrode 421 may be disposed in contact with one end of the first pressure sensing electrode 411 and the second pressure sensing electrode 412.

The second piezoresistive electrode 422 may be disposed in contact with the second pressure sensing electrode 412 and the third pressure sensing electrode 413. For example, the second piezoresistive electrode 422 may be disposed in contact with one end of the second pressure sensing electrode 412 and the third pressure sensing electrode 413.

5 and 6, the pressure sensing electrode 410 includes a plurality of pressure sensing electrodes spaced from each other, and the piezoresistive electrode 420 may be integrally formed.

In detail, the piezoresistive electrodes 420 are disposed on the pressure sensing electrodes spaced apart from each other, and may be disposed in contact with the pressure sensing electrodes. 5 and 6, the piezoresistive electrode 420 is disposed on the front surface of the pressure sensing electrodes. However, the present invention is not limited to this, And may be disposed on a partial surface of the pressure sensing electrodes.

Both the pressure sensing electrode 410 and the piezoresistive electrode 420 may be disposed on the same side of the substrate. That is, the first pressure sensing electrode 411, the second pressure sensing electrode 412, the third pressure sensing electrode 413, and the piezoresistive electrode 420 are formed on the same surface of the substrate 300 .

However, the embodiment is not limited thereto, and the pressure sensing electrode 410 and the piezoresistive electrode 420 may be disposed on different planes. For example, referring to FIG. 7, some of the pressure sensing electrodes are disposed on one side of the piezoresistive electrode 420, and the other portions of the pressure sensing electrodes are positioned on the And may be disposed on the other surface opposite to one surface of the piezoresistive electrode 420.

That is, the pressure sensing electrodes 410 may be disposed on at least two layers.

The pressure sensing electrode 410 may include a conductive material.

For example, the pressure sensing electrode 410 may be formed of indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, , Titanium oxide, and the like.

Alternatively, the pressure sensing electrode 410 may include a nanowire, a photosensitive nanowire film, a carbon nanotube (CNT), a graphene, a conductive polymer, or a mixture thereof.

Alternatively, the pressure sensing electrode 410 may include various metals. For example, the pressure sensing electrode 410 may be formed of one selected from the group consisting of Cr, Ni, Cu, Al, Ag, and Mo. Gold (Au), titanium (Ti), and alloys thereof.

A protective layer 500 may be further disposed on the region corresponding to the non-effective region. The passivation layer 500 may be disposed to surround the pressure sensing electrode 410 and the piezoresistive electrode 420.

Accordingly, damage or deformation of the pressure sensing electrode 410 and the piezoresistive electrode 420 exposed to the outside can be prevented. The protective layer 500 may include at least one of an acrylic resin, a silicone resin, a urethane resin, and an epoxy resin.

An adhesive layer 600 may be disposed on the upper surface of the second side support 121. The adhesive layer 600 may adhere to the protective layer 500. The pressure sensing member 400 may be fixed to the inside of the cover case 100 by the adhesive layer 600.

However, the adhesive layer 600 may be omitted. The pressure sensitive member 400 may be fixed to the inside of the cover case 100 through the protective layer 600 by omitting a separate adhesive layer by giving adhesive properties to the protective layer 500 in detail .

The pressure sensing electrode 410 may be formed in a plurality of patterns. In detail, the pressure sensing electrode 410 may include a plurality of patterns spaced apart from each other. For example, the pressure sensing electrode 410 may include at least four pressure sensing electrode patterns spaced apart from each other.

The pressure sensing electrode patterns may be formed in various shapes such as a square, a triangle, or the like.

For example, the pressure sensing electrode patterns may be formed of intersecting patterns of triangular patterns or alternating lattice intersection patterns of alternating rectangular patterns. As the pressure sensing patterns are formed with such crossing patterns, the accuracy of pressure sensing can be improved as the area of contact between the pressure sensing electrode and the piezoresistive electrode is increased.

Since the pressure sensing electrode is formed of a plurality of patterns, the force at two points can be recognized more easily than in the case where the force acts in the multi-region, and reliability can be improved.

The pressure sensing electrode 410 and the piezoresistive electrode 420 may sense a force or pressure applied to the substrate 300 by the input device.

For example, the substrate 300 may include a first surface 300a contacting the input device and a second surface 300b opposite the first surface 300a.

When the input device contacts the first surface 300a, the pressure sensing electrode 410 and the piezoresistive electrode 420 sense the pressure according to the magnitude of the force according to the contact force of the input device .

Referring to FIG. 8, the piezoresistive electrode 420 may have different characteristics depending on whether or not the input device is contacted.

Referring to FIG. 8, the piezoresistive electrode 420 may include a matrix 420b and a plurality of conductive particles 420a dispersed in the matrix 420b.

The conductive particles 420a may include various materials having conductivity. For example, the conductive particles 420a may include various metals. For example, the conductive particles 420a may be at least one selected from the group consisting of Cr, Ni, Cu, Al, Ag, and Mo. Gold (Au), titanium (Ti), and alloys thereof.

Alternatively, the conductive particles 420a may include nanowires, photosensitive nanowire films, carbon nanotubes (CNTs), graphenes, conductive polymers, or mixtures thereof.

The conductive particles 420a may be spaced a first distance d1 when the input device is not in contact. At this time, the piezoresistive electrode 420 may have a nonconductive property. Accordingly, when the input device is not in contact, the pressure sensing electrode 410 and the piezoresistive electrode 420 may be insulated from each other.

However, when the input device contacts the first surface of the substrate 300 and a force is applied thereto, the piezoresistive electrode 420 may have a conductive characteristic. In detail, the conductive particles 420a may be spaced and disposed at a second distance d2 when the input device is contacted. That is, the conductive particles 420a may be spaced at the second distance d2, which is smaller than the first distance d1, when the input device is contacted.

That is, the conductive particles 420a can be arranged more closely. Accordingly, the density of the conductive particles 420a is increased, and the piezoresistive electrode is changed from nonconductive to conductive, and the resistance can be reduced.

In detail, the change of the current density value flowing through the pressure sensing electrode according to the change in resistance of the piezoresistive electrode can be sensed, and the presence or absence of the pressure and the magnitude of the pressure due to the contact of the input device can be sensed.

For example, the current of the pressure sensing electrode may increase while the resistance of the piezoresistive electrode decreases. At this time, the magnitude of the current value can detect the presence or absence of the pressure and the magnitude of the pressure due to the contact of the input device. That is, when the pressure is applied by the input device, the volume of the piezoresistive electrode contacting the pressure sensing electrode, that is, the contact area decreases, the current flowing per unit area increases while the current density increases, Pressure can be measured.

Alternatively, while the resistance of the piezoresistive electrode decreases, the value of the current density flowing through the pressure sensing electrode changes, and the change in the capacitance of the pressure sensing electrode due to the change of the current density value is measured, And the magnitude of the pressure can be measured.

The touch window may further include a touch sensing electrode.

The touch sensing electrode may include a transparent conductive material to allow electricity to flow without disturbing the transmission of light.

For example, the touch sensing electrode may include at least one of indium tin oxide (ITO), indium zinc oxide, copper oxide, tin oxide, zinc oxide, titanium oxide titanium oxide, and the like. Accordingly, when manufacturing a flexible and / or bent touch device, the degree of freedom can be improved.

Alternatively, the touch sensing electrode may include a nanowire, a photosensitive nanowire film, a carbon nanotube (CNT), a graphene, a conductive polymer, or a mixture thereof. Accordingly, when the touch device having flexible and / or bending is manufactured, the degree of freedom can be improved.

When nanocomposites such as nanowires or carbon nanotubes (CNTs) are used, they may be made of black. The color and reflectance can be controlled while securing the electric conductivity by controlling the content of the nano powder.

Alternatively, the touch sensing electrode may include various metals. For example, the touch sensing electrode may be made of Cr, Ni, Cu, Al, Ag, or Mo. Gold (Au), titanium (Ti), and alloys thereof. Accordingly, when manufacturing a flexible and / or bent touch device, the degree of freedom can be improved.

Alternatively, the touch sensing electrodes may be arranged in a mesh shape. For example, the touch sensing electrodes may include a plurality of sub-electrodes disposed to intersect with each other, and the sensing electrodes may be arranged in a mesh shape as a whole by the sub-electrodes.

The touch sensing electrode has a mesh shape so that the pattern of the touch sensing electrode is not visible on the effective area. That is, even if the touch sensing electrode is formed of metal, the pattern can be made invisible. Also, the resistance of the touch window can be lowered even if the touch sensing electrode is applied to a touch window of a large size.

In detail, the touch sensing electrode may include a mesh line formed by a plurality of sub-electrodes crossing each other and a mesh opening between the mesh lines.

The line width of the mesh line may be about 0.1 탆 to about 10 탆. The mesh line having a line width of the mesh line less than about 0.1 탆 may not be possible in the manufacturing process, and when the line width is more than about 10 탆, the sensing electrode pattern may be visually recognized from outside and visibility may be deteriorated. Alternatively, the line width of the mesh wire may be from about 1 [mu] m to about 5 [mu] m. Or, the line width of the mesh line may be about 1.5 탆 to about 3 탆.

Further, the thickness of the mesh line may be about 100 nm to about 500 nm. If the thickness of the mesh wire is less than about 100 nm, the electrode resistance may increase and the electrical characteristics may deteriorate. If the mesh wire thickness exceeds about 500 nm, the overall thickness of the touch window may become thick and the process efficiency may be deteriorated. Preferably, the thickness of the sensing electrode mesh line may be about 150 nm to about 200 nm. More preferably, the thickness of the mesh line may be from about 180 nm to about 200 nm.

The touch sensing electrode may be disposed on the substrate 300. In detail, the touch sensing electrode may be disposed on the effective area AA of the substrate 300. [

Alternatively, the touch sensing electrode may be disposed on the display panel 200. For example, the touch sensing electrode may be disposed between the first substrate 210 and the second substrate 220.

Alternatively, the touch sensing electrode may be disposed on the substrate 300 and the display panel. For example, the touch sensing electrode may be disposed on the effective area AA of the substrate 300 and may be disposed on the second substrate 220 of the display panel 200.

In addition, the substrate 300 may further include a wiring electrode connected to the touch sensing electrode on a non-effective region. The wiring electrode may include a conductive material. For example, the wiring electrode may include a conductive material that is the same as or different from the sensing electrode described above.

The touch device according to the embodiment may have an electrode for sensing pressure directly on the substrate. In detail, the pressure sensing electrode can be disposed on the ineffective area of the substrate.

Thus, the substrate and the pressure sensing electrode can be integrated.

Therefore, the touch device according to the embodiment can omit a separate pressure sensing layer for sensing the pressure.

Therefore, it is possible to prevent an increase in the thickness of the touch device due to the separate pressure sensing layer, thereby realizing a touch device with a slim thickness.

In addition, by disposing the pressure sensing electrode on the ineffective area of the substrate, the arrangement position of the touch sensing electrode is not limited, so that it can be applied to various types of touch devices.

Hereinafter, an example of a display device to which the touch device according to the above-described embodiments is applied will be described with reference to FIGS. 9 to 13. FIG.

Referring to Fig. 9, a mobile terminal is shown as an example of a touch device device. The mobile terminal may include a valid area AA and a non-valid area UA. The effective area AA senses a touch signal by touching a finger or the like, and a command icon pattern part and a logo are formed on the non-valid area.

10 and 11, the touch device may include a flexible device that is bent. Accordingly, the touch device device including the same may be a flexible touch device device. Therefore, the user can bend or bend by hand. Such a flexible touch device can be applied to a wearable touch such as a smart watch 1000.

Referring to FIG. 12, such a touch device can be applied not only to a touch device such as a mobile terminal, but also to a car navigation system.

Further, referring to Fig. 13, such a touch device can also be applied to a vehicle. That is, the touch device can be applied to various parts to which the touch device can be applied in the vehicle. Therefore, not only PND (Personal Navigation Display) but also dashboard can be applied to implement CID (Center Information Display). However, the embodiment is not limited thereto, and it goes without saying that such a touch device device can be used for various electronic products.

The features, structures, effects and the like described in the foregoing embodiments are included in at least one embodiment of the present invention and are not necessarily limited to one embodiment. Further, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified in other embodiments by those skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the present invention. It can be seen that various modifications and applications are possible. For example, each component specifically shown in the embodiments may be modified and implemented. It is to be understood that the present invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof.

Claims (17)

A substrate accommodated in the cover case, the substrate including a valid region and a non-valid region; And
And at least one pressure sensing member disposed on the ineffective area,
The pressure-
At least one pressure sensing electrode disposed on the substrate; And
And a piezoresistive electrode disposed on the pressure sensing electrode. The method according to claim 1,
Wherein the pressure sensing electrode includes a first pressure sensing electrode and a second pressure sensing electrode spaced apart from each other,
And the piezoresistive electrode is disposed in contact with the first pressure sensing electrode and the second pressure sensing electrode. 3. The method of claim 2,
Wherein the piezoresistive electrode includes a first piezoresistive electrode and a second piezoresistive electrode spaced apart from each other,
Wherein the first piezoresistive electrode and the second piezoresistive electrode are disposed in contact with the pressure sensing electrode. The method according to claim 2 or 3,
Wherein the piezoresistive electrode comprises a matrix and a plurality of conductive particles dispersed within the matrix. 5. The method of claim 4,
The substrate having a first side on which the input device contacts; And a second surface opposite to the first surface and on which the pressure sensing member is disposed,
Wherein the distance of the conductive particles changes as the input device contacts the first surface. 6. The method of claim 5,
Wherein a distance of the conductive particles at a contact surface of the input device is reduced when the input device contacts the first surface. 6. The method of claim 5,
Wherein the piezoresistive electrode is conductive when the input device contacts the first surface. 6. The method of claim 5,
The resistance of the piezoresistive electrode is changed when the input device contacts the first surface,
Wherein the capacitance value of the pressure sensing electrode changes as the resistance of the piezoresistive electrode changes. The method according to claim 1,
Wherein the pressure sensing electrodes comprise a plurality of pressure sensing electrode patterns spaced apart from each other. 10. The method of claim 9,
Wherein the pressure sensing electrode comprises at least four pressure sensing electrode patterns. The method according to claim 2 or 3,
Wherein the first pressure sensing electrode and the second pressure sensing electrode are disposed on the same side of the substrate. The method according to claim 2 or 3,
Wherein the first pressure sensing electrode is disposed in contact with one surface of the piezoresistive electrode,
And the second pressure sensing electrode is disposed in contact with the other surface opposite to the one surface of the piezoresistive electrode. The method according to claim 1,
And a touch sensing electrode disposed on the effective area. The method according to claim 1,
Wherein the substrate comprises a cover substrate. 15. A touch screen comprising: a touch window according to any one of claims 1 to 14;
And a display panel disposed on the touch window. 16. The method of claim 15,
Wherein the touch sensing electrode is disposed on the display panel. 16. The method of claim 15,
Wherein the touch sensing electrode is disposed inside the display panel.

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