KR20170001328A - Touch window - Google Patents

Abstract

A touch window according to an embodiment includes a substrate including a valid region and a non-valid region; a first sensing electrode disposed on the valid region; a wiring electrode disposed on the in- valid region; an intermediate layer disposed on the first sensing electrode; and a second sensing electrode disposed on the intermediate layer. The thickness of the intermediate layer is less than 20 m. The intermediate layer includes a photosensitive material. So, a thin touch window with improved reliability can be provided.

Description

Touch window {TOUCH WINDOW}

An embodiment relates to a touch window.

[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.

The touch window is typically divided into a resistive touch window and a capacitive touch window. The resistance film type touch window detects the change of resistance according to the connection between the electrodes when the pressure is applied to 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. Considering the convenience of the manufacturing method and the sensing power, recently, in a small model, the electrostatic capacity method has attracted attention.

The touch window may include a sensing electrode on a substrate and a wiring electrode connected to the sensing electrode. The touch window may detect a change in capacitance when a region where the sensing electrode is disposed to detect a position.

Such a touch window may be formed in various types according to the positional relationship of the sensing electrode and / or the wiring electrode.

For example, when the first electrode is formed on the upper substrate and the second electrode is formed on the lower substrate, a gap between the first electrode and the second electrode, or between the substrate and the electrode may be a transparent adhesive for optical (OCA) They can be bonded to each other through a transparent resin (OCR).

At this time, when the thickness of the adhesive layer is increased, the overall thickness of the touch window becomes thick, and when the flexible touch window is realized, the reliability may be lowered due to such a thick thickness.

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

The embodiments are intended to provide a touch window having a thin thickness and improved reliability.

A touch window according to an embodiment includes: a substrate including a valid region and a non-valid region; A first sensing electrode disposed on the effective region; A wiring electrode disposed on the ineffective area; An intermediate layer disposed on the first sensing electrode; And a second sensing electrode disposed on the intermediate layer, wherein the thickness of the intermediate layer is less than 20 mu m, and the intermediate layer includes a photosensitive material.

The touch window according to the embodiment can provide a touch window having a small thickness. The touch window according to the embodiment may be arranged such that the second sensing electrode is disposed on the intermediate layer instead of the substrate and the thickness of the intermediate layer is less than 20 占 퐉 so that the thickness of the touch window can be reduced and the flexibility of the touch window can be improved .

In the touch window according to the embodiment, since the intermediate layer includes an adhesive material, the substrate and the intermediate layer can be bonded to each other without an additional adhesive layer on the intermediate layer, so that the thickness of the touch window can be reduced.

In the touch window according to the embodiment, since the intermediate layer includes the photosensitive material, the mesh-shaped electrode can be formed by precise patterning, thereby improving the reliability of the touch window.

1 is an exploded perspective view of a touch window according to an embodiment.
2 is a cross-sectional view of a touch window according to an embodiment.
FIGS. 3 and 4 are views for explaining an electrode forming process of the sensing electrode and / or the wiring electrode according to the embodiment.
5 and 6 are views for explaining various types of touch windows according to an embodiment.
7 to 9 are views showing a touch device in which a touch window and a display panel according to an embodiment are combined.
10 to 13 are views showing an example of a touch device device to which a touch window according to the embodiment 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.

Referring to FIG. 1, a touch window according to an embodiment may include a substrate 100, a sensing electrode 200, a wiring electrode 300, and an intermediate layer 400.

The substrate 100 may support the sensing electrode 200, the wiring electrode 300, and the intermediate layer 400. That is, the substrate 100 may be a supporting substrate.

The substrate 100 may be rigid or flexible.

For example, the substrate 100 may comprise glass or plastic. In detail, the substrate 100 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 100 may include an optically isotropic film. For example, the substrate 100 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 space 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 100 may be curved with a partially curved surface. That is, the substrate 100 may be partially flat and partially curved with a curved surface. In detail, the end of the substrate 100 may have a curved surface or a curved surface with a curvature that may be bent or curved.

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

In addition, the substrate 100 may be a curved or a bended substrate. That is, the touch window including the substrate 100 may be formed to have a flexible, curved, or bent characteristic. Accordingly, the touch window according to the embodiment is easy to carry and can be changed into various designs.

The sensing electrode 200 and the wiring electrode 300 may be disposed on the substrate 100. That is, the substrate may be a supporting substrate.

The substrate 100 may include a cover substrate. That is, the sensing electrode and the wiring electrode may be supported by the cover substrate.

In the substrate 100, 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 may sense the position of an input device (e.g., a finger, a stylus pen, etc.). When an input device such as a finger is brought into contact with such a touch window, a capacitance difference occurs at a portion where the input device is contacted, and a portion where such a difference occurs can be detected as the contact position.

The sensing electrode 200 may include a first sensing electrode 210 and a second sensing electrode 220.

The first sensing electrode 210 and the second sensing electrode 220 may extend in different directions. In detail, the first sensing electrode 210 may extend in a first direction, and the second sensing electrode 220 may extend in a direction different from the first direction. For example, the first sensing electrode 210 and the second sensing electrode 220 may extend in directions intersecting with each other. The first sensing electrode 210 and the second sensing electrode 220 may be disposed at different positions.

The first sensing electrode 210 may be disposed on the substrate 100. For example, the first sensing electrode 210 may be disposed on at least one of the effective area AA and the ineffective area UA of the substrate 100. In detail, the first sensing electrode may be disposed on the effective area AA of the substrate 100.

The second sensing electrode 220 may be disposed on the intermediate layer 400. For example, the second sensing electrode 220 may be formed on the intermediate layer 400 corresponding to at least one of the effective area AA of the substrate 100 and the ineffective area UA of the substrate 100, Lt; / RTI > In detail, the second sensing electrode 220 may be disposed on the intermediate layer 400 corresponding to the effective area AA and the non-effective area UA of the substrate 100. More specifically, one end of the second sensing electrode 220 is disposed on the middle layer 400 corresponding to the effective area AA of the substrate 100, and the other end of the second sensing electrode 220 And may extend to the intermediate layer 400 corresponding to the ineffective area UA of the substrate 100.

At least one of the first sensing electrode 210 and the second sensing electrode 220 may include a transparent conductive material to allow electricity to flow without disturbing the transmission of light. For example, The electrode may be formed of a metal such as indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, titanium oxide, Oxide. ≪ / RTI > Accordingly, since the transparent material is disposed on the sensing effective region, the degree of freedom in pattern formation of the sensing electrode can be improved.

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

Alternatively, at least one of the first sensing electrode 210 and the second sensing electrode 220 may include various metals. For example, the sensing electrode 200 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.

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

Since the sensing electrode 200 has a mesh shape, the pattern of the sensing electrode can be made invisible on the effective area AA. That is, even if the sensing electrode 200 is formed of metal, the pattern can be made invisible. Also, even if the sensing electrode 200 is applied to a touch window of a large size, the resistance of the touch window can be lowered. In addition, the sensing electrode 200 and the wiring electrode 300 may be simultaneously patterned using the same material.

Referring to FIG. 1, the sensing electrode 200 may be formed in a mesh shape. In detail, the first sensing electrode 210 and the second sensing electrode 220 may include a plurality of sub-electrodes, and the sub-electrodes may be disposed so as to intersect with each other in a mesh shape.

In detail, the first sensing electrode 210 and the second sensing electrode 220 are electrically connected to the mesh line LA and the mesh opening LA between the mesh line LA by a plurality of sub- OA).

The line width of the mesh line LA may be about 0.1 mu m to about 10 mu m. If the line width of the mesh line LA is less than about 0.1 mu m, the mesh line portion may not be formed in the manufacturing process or may short-circuit the mesh line. If the line width exceeds about 10 mu m, the electrode pattern may be visually recognized from the outside, have. Preferably, the line width of the mesh line LA may be about 0.5 mu m to about 7 mu m. More preferably, the linewidth of the mesh wire may be between about 1 [mu] m and about 3.5 [mu] m.

The thickness of the mesh line LA may be about 100 nm to about 500 nm. If the thickness of the mesh line LA is less than about 100 nm, the mesh line portion may not be formed in a manufacturing process or a short circuit may occur. If the thickness of the mesh line LA is more than about 500 nm, the flexible or ben double characteristic may be deteriorated. Preferably, the thickness of the mesh line LA may be about 150 nm to about 250 nm. More preferably, the thickness of the mesh line LA may be about 180 nm to about 200 nm.

In addition, the mesh opening may be formed in various shapes. For example, the mesh opening OA may have various shapes such as a square, a diamond, a pentagon, a hexagon, a polygonal shape, or a circular shape. Further, the mesh opening may be formed in a regular shape or a random shape.

The wiring electrode 300 may be disposed on the substrate 100. In detail, the wiring electrode 300 may be disposed on at least one of the effective region AA and the ineffective region UA of the substrate 100. Preferably, the wiring electrode 300 may be disposed on the ineffective area UA of the substrate 100.

The wiring electrode 300 may include a first wiring electrode 310 and a second wiring electrode 320. For example, the wiring electrode 300 includes a first wiring electrode 310 connected to the first sensing electrode 210 and a second wiring electrode 320 connected to the second sensing electrode 220 can do.

One end of the first wiring electrode 310 may be connected to the first sensing electrode 210 and the other end thereof may be connected to the circuit board. One end of the second wiring electrode 320 may be connected to the second sensing electrode 220 and the other end thereof may be connected to the circuit board.

As the circuit board, various types of circuit boards can be used. For example, a flexible printed circuit board (FPCB) or the like can be applied.

The first wiring electrode 310 and the second wiring electrode 320 may include a conductive material. For example, the wiring electrode 300 may include the same material as the sensing electrode 300 described above.

At least one of the sensing electrodes and the wiring electrodes may be connected to the substrate 100. For example, the first sensing electrode 210 disposed on the substrate 100 may be connected to the first wiring electrode 310 disposed on the substrate 100 on the substrate 100.

At least one of the sensing electrodes and the wiring electrodes may be connected to the intermediate layer 400. For example, the second sensing electrode 220 disposed on the intermediate layer 400 may be connected to the second wiring electrode 320 disposed on the substrate 100 on the intermediate layer 400. The second sensing electrode 220 may be connected to the second wiring electrode 320 on the intermediate layer 400 corresponding to the ineffective area UA of the substrate 100.

For example, the second sensing electrode 220 may be connected to the second wiring electrode 320 by a connection electrode. Although not shown in the drawing, the connection electrode is for connecting the second sensing electrode 220 and the second wiring electrode 320, and thus it is needless to say that the connection electrode is not limited to being extended in a specific direction.

Although not shown in the figure, an outer dummy layer may be disposed on the ineffective area UA of the substrate 100. [ The outer dummy layer is formed by applying a material having a predetermined color so that the wiring electrodes disposed on the ineffective area UA and the printed circuit board connecting the wiring electrodes to external circuits can not be seen from the outside can do.

The outer dummy layer may have a color suitable for a desired appearance, and may include black or white pigment, for example, black or white. Or a film or the like can be used to realize various color colors such as white or black, red, and blue.

When the outer dummy layer is formed of a film and the substrate is flexible or includes a curved surface, the outer dummy layer can be easily disposed on one surface of the substrate, thereby preventing the outer dummy layer from being de- The reliability of the window can be improved.

A desired logo or the like can be formed on the outer dummy layer by various methods. Such an outer dummy layer can be formed by vapor deposition, printing, wet coating or the like.

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

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

The intermediate layer 400 may be disposed on the substrate 100. For example, the intermediate layer 400 may be disposed on at least one of the effective area AA and the ineffective area UA of the substrate 100. In detail, the intermediate layer 400 is disposed on the effective area AA of the substrate 100, and may be partially disposed on one area of the ineffective area UA.

The intermediate layer 400 may be disposed on the first sensing electrode 210. More specifically, the intermediate layer 400 may be disposed on the substrate 100 while covering the first sensing electrode 210. For example, the intermediate layer 400 may be disposed on the substrate 100 so as to cover the other surface and both sides of the first sensing electrode 210 opposite to the first surface contacting the substrate 100.

The intermediate layer 400 may include a different material from the substrate 100.

The intermediate layer 400 may include a photosensitive material. For example, the intermediate layer 400 may include an acrylic material as a photosensitive material. In detail, the intermediate layer 400 may include various photosensitive materials using an acrylic monomer. However, the embodiments are not limited thereto, and it goes without saying that various photosensitive materials may be used.

The intermediate layer 400 may include an adhesive material. For example, the intermediate layer 400 may include an acrylic material as an adhesive material. In detail, the intermediate layer 400 may include various adhesive materials using an acrylic monomer. However, the embodiment is not limited thereto, and it goes without saying that various adhesive materials can be used.

The intermediate layer 400 may include an insulating material. For example, the intermediate layer 400 may include an acrylic material as an insulating material. In detail, the intermediate layer 400 may include various insulating materials using an acrylic monomer. However, the embodiment is not limited thereto, and it goes without saying that various insulating materials can be used.

At this time, the thickness of the intermediate layer 400 may be smaller than the thickness of the substrate 100.

The cross-sectional area of the intermediate layer 400 may be different from the cross-sectional area of the substrate 100. In detail, the cross-sectional area of the intermediate layer 400 may be smaller than the cross-sectional area of the substrate 100.

The intermediate layer 400 may be disposed directly on the upper surface of the substrate 100. That is, the intermediate layer 400 may be formed by directly coating a photosensitive material on the upper surface of the substrate 100 on which the first sensing electrode 210 is disposed. Then, the second sensing electrode 220 may be disposed on the intermediate layer 400.

Accordingly, a separate adhesive layer may be formed between the first sensing electrode 210 and the second sensing electrode 220 or between the substrate 100 and the electrodes, for example, an optical transparent adhesive (OCA) The transparent resin (OCR) for the touch panel can be omitted, so that the overall thickness of the touch window can be reduced.

The intermediate layer 400 may support the second sensing electrode 220. In detail, the second sensing electrode 220 may be disposed on at least one of both surfaces of the intermediate layer 400.

The second sensing electrode 220 disposed on the intermediate layer 400 may be connected to a second wiring electrode 320 disposed on the substrate 100.

2 is a cross-sectional view of a touch window according to an embodiment.

2, the touch window according to the embodiment includes the first sensing electrode 210 and the wiring electrode 300 disposed on a substrate 100, the first sensing electrode 210 and the wiring electrode 300, An intermediate layer 400 may be disposed on the intermediate layer 400 and a second sensing electrode 220 may be disposed on the intermediate layer 400.

The thickness of the substrate 100 and the intermediate layer 400 may be different from each other. For example, the thickness T1 of the substrate 100 may be greater than the thickness T2 of the intermediate layer 400. [

The thickness T1 of the substrate 100 may be 20 占 퐉 to 100 占 퐉. For example, the thickness T1 of the substrate 100 may be 20 [mu] m to 50 [mu] m. For example, the thickness T1 of the substrate 100 may be 20 占 퐉 to 30 占 퐉. The thinner the thickness T1 of the substrate 100, the more flexible the touch window can be. On the other hand, when the thickness (T1) of the substrate 100 is less than 20 mu m, the strength may be lowered.

The thickness T2 of the intermediate layer 400 may be less than 20 mu m. For example, the thickness T2 of the intermediate layer 400 may be 1 to 10 占 퐉. For example, the thickness T2 of the intermediate layer 400 may be 1 탆 to 5 탆.

When the thickness T2 of the intermediate layer 400 is 20 mu m or more, the thickness of the touch window may increase. Further, as the flexibility of the touch window is lowered, the flexible or ben double characteristic may be deteriorated.

When the thickness T2 of the intermediate layer 400 is less than 1 mu m, the manufacturing efficiency of the intermediate layer 400 may be lowered. Also, the adhesion property and / or the insulation property of the intermediate layer 400 may be deteriorated.

The touch window according to an embodiment can reduce the thickness of the touch window by replacing the thick substrate with a thin intermediate layer. That is, instead of the substrate having a thickness of 20 탆 or more, the touch sensing window according to the embodiment can dispose the second sensing electrode 220 on the intermediate layer 400 having a thickness of less than 20 탆. Thus, the overall thickness of the touch window can be reduced. In addition, since the touch window according to the embodiment has flexibility of being improved by arranging the intermediate layer 400 with a thickness less than 20 mu m, the flexible or ben-double characteristic can be improved.

The first sensing electrode 210 and the second sensing electrode 220 may have a mesh shape. Accordingly, the flexible or ben-double characteristic of the touch window according to the embodiment can be improved.

The lower surface of the first sensing electrode 210 may be in contact with the substrate 100 and the upper surface opposite to the lower surface and both sides connecting the upper surface and the lower surface may contact the intermediate layer 400. For example, the upper surface and both sides of the first sensing electrode 210 may be in direct contact with the intermediate layer 400.

The lower surface of the wiring electrode 300 may be in contact with the substrate 100 and the upper surface opposite to the lower surface and both sides connecting the upper surface and the lower surface may be in contact with the intermediate layer 400. For example, the upper surface and both side surfaces of the wiring electrode 300 may be in direct contact with the intermediate layer 400.

The lower surface of the second sensing electrode 220 may contact the intermediate layer 400. For example, the lower surface of the second sensing electrode 220 may be in direct contact with the intermediate layer 400.

That is, the intermediate layer 400 may be disposed between the first sensing electrode 210 and the second sensing electrode 220. The intermediate layer 400 may be disposed between the first sensing electrode 210 and the second sensing electrode 220 because the intermediate layer 400 is an insulating material.

Since the intermediate layer 400 includes an adhesive material, the substrate 100 and the intermediate layer 400 may be bonded without a separate adhesive layer between the substrate 100 and the intermediate layer 400. Therefore, since the adhesive layer can be omitted, the thickness of the touch window can be reduced. In addition, since the step of disposing the adhesive layer on the substrate can be omitted, the process efficiency can be improved, and the process cost can be reduced by omitting the adhesive layer.

In addition, since the intermediate layer 400 includes a transparent material, it is possible to prevent the intermediate layer 400 from being viewed from the outside.

FIGS. 3 to 4 are views for explaining an electrode forming process of the sensing electrode and / or the wiring electrode according to the embodiment.

Referring to FIG. 3, a protective film 500 may be disposed on the intermediate layer 400 to perform a primary exposure process.

Thereafter, the protective film 500 may be removed and a secondary exposure process may be performed.

The intermediate layer 400 may be partially removed in the primary and secondary exposure processes. Accordingly, the intermediate layer 400 including the photosensitive material may be patterned.

For example, the intermediate layer 400 may include an engraved pattern P. In detail, the second sensing electrode 220 may be disposed in the engraved pattern P. For example, a mesh-shaped engraved pattern P may be formed on the intermediate layer 400.

That is, the intermediate layer 400 including the photosensitive material may form an engraved pattern P on the intermediate layer 400 by an exposure process. Accordingly, the step of disposing the resin layer for forming the pattern of the engraved pattern can be omitted, so that the efficiency of the process can be improved. Further, since the resin layer for forming the engraved pattern can be omitted, the thickness of the touch window can be reduced.

Next, the intermediate layer 400 including the engraved pattern P may perform a developing process. The depth of the engraved pattern P may be determined by whether or not the protective film 500 is disposed and by the number of exposures.

That is, the intermediate layer 400 can form the intermediate layer 400 having various engraved patterns P by changing the exposure process.

Accordingly, the second sensing electrode 220 may be disposed in the engraved pattern P of the intermediate layer 400. For example, the second sensing electrode 220 may include a mesh shape.

The second sensing electrode 220 may be formed by filling a metal paste (MP) in the engraved pattern (P).

The metal paste MP may be at least one selected from the group consisting of Cr, Ni, Cu, Al, Ag, Mo, Au, Or a metal paste containing at least one metal among the alloys. Accordingly, by filling the metal paste in the intaglio pattern of the mesh shape and curing it, it is possible to form the mesh-shaped metal mesh electrode of the intaglio angle.

As such, the second sensing electrode 220 formed can form a precise patterning at the nano / micrometer level compared to the printing method. Accordingly, since the touch window according to the embodiment can realize a fine line width and can prevent a short-circuit of the mesh electrode, the reliability can be improved.

4, the second sensing electrode according to the embodiment includes a metal layer M disposed on a front surface of an intermediate layer 400, and the metal layer M is etched in a mesh shape to form a mesh-shaped electrode .

For example, a metal layer may be deposited on the entire surface of the intermediate layer 400, such as an acrylic resin, and then the metal layer may be etched to form a metal mesh electrode having an embossed mesh. The metal layer M may include the electrode layer.

Hereinafter, various types of touch windows according to embodiments will be described with reference to FIGS. 5 to 7. FIG.

Referring to FIG. 5, a separate cover substrate 110 may be further disposed on the substrate 100.

The first sensing electrode 210 and the wiring electrode 300 are disposed on the substrate 100. The second sensing electrode 220 is disposed on the middle layer 400 and the second sensing electrode 220 is disposed on the middle layer 400. [ The cover substrate 110 may be disposed.

The cover substrate 110 may include a material corresponding to or similar to the substrate 100.

Since the intermediate layer 400 includes an adhesive material, the adhesive layer disposed between the intermediate layer 400 and the substrate 100 may be omitted.

For example, since the intermediate layer 400 includes an adhesive material, the substrate 100 and the intermediate layer 400 can be bonded without a separate adhesive layer.

Meanwhile, the intermediate layer 400 and the cover substrate 110 may be bonded together through an adhesive layer. Since the cover substrate 100 and the substrate 100 can be separately formed, it is advantageous for mass production of a touch window.

Referring to FIG. 6, in the touch window according to the embodiment, the positions of the touch window and the wiring electrode 300 may be different.

The first sensing electrode 210 and the first wiring electrode 310 may be disposed on the substrate 100. The first sensing electrode 210 may be disposed on the substrate 100 and the first sensing electrode 210 may be connected to the first sensing electrode 210 on the substrate 100.

The second sensing electrode 220 and the second wiring electrode 320 may be disposed on the intermediate layer 400. The second sensing electrode 220 may be disposed on the intermediate layer 400 and the second sensing electrode 220 may be connected to the second wiring electrode 220 on the intermediate layer 400.

7 to 9, a touch device in which the touch window and the display panel described above are combined will be described.

Referring to FIG. 7, the touch device according to the embodiment may include a touch window disposed on the display panel 600.

7, the touch device may include a touch panel including the cover substrate 110 and the substrate 100, and the display panel 600 may be coupled to each other. Referring to FIG. The substrate 100 and the display panel 600 may be bonded to each other through an adhesive layer 700. For example, the substrate 100 and the display panel 600 may be bonded to each other through an adhesive layer 600 including an optical transparent adhesive (OCA) or an optical transparent resin (OCR).

The display panel 600 may include a first substrate 610 and a second substrate 620.

When the display panel 600 is a liquid crystal display panel, the display panel 600 includes a first substrate 610 including a thin film transistor (TFT) and a pixel electrode, and a second substrate 610 including color filter layers. The substrate 620 may be formed as a structure in which the liquid crystal layer is interposed between the substrates 620.

The display panel 600 may include a thin film transistor, a color filter, and a black matrix formed on a first substrate 610 and a second substrate 620 on the first substrate 610 Or a color filter on transistor (COT) structure. That is, a thin film transistor may be formed on the first substrate 610, 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 610 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.

When the display panel 600 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 600.

When the display panel 600 is an organic light emitting display panel, the display panel 600 includes a self-luminous element that does not require a separate light source. In the display panel 600, a thin film transistor is formed on a first substrate 610, 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 620 serving as an encapsulation substrate or a barrier substrate for encapsulation.

Referring to FIG. 8, the touch device according to the embodiment may include a touch window integrally formed with the display panel 600. That is, the 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 600. That is, at least one sensing electrode may be formed on at least one surface of the first substrate 610 or the second substrate 620.

At this time, at least one sensing electrode may be formed on the upper surface of the substrate disposed above.

In addition, since the intermediate layer 400 includes an adhesive material, the adhesive layer may be omitted.

Referring to FIG. 8, a first sensing electrode 210 may be disposed on one surface of the cover substrate 110. Also, a first wiring connected to the first sensing electrode 210 may be disposed. In addition, the second sensing electrode 220 may be disposed on one surface of the display panel 600. In addition, a second wiring connected to the second sensing electrode 220 may be disposed.

An adhesive layer 700 may be disposed between the cover substrate 110 and the display panel 600, and the cover substrate and the display panel 600 may be bonded to each other.

In addition, a polarizer may be further included under the cover substrate 110. The polarizing plate may be a linear polarizing plate or an external light reflection preventing polarizing plate. For example, when the display panel 600 is a liquid crystal display panel, the polarizer may be a linear polarizer. In addition, when the display panel 600 is an organic light emitting display panel, the polarizing plate may be an external light reflection preventing polarizing plate.

At least one sensing electrode may be disposed on one surface of the polarizer.

The touch device according to the embodiment may omit at least one substrate supporting the sensing electrode. As a result, a touch device with a thin thickness and light weight can be formed.

Next, a touch device according to another embodiment will be described with reference to Fig. The description overlapping with the above-described embodiments may be omitted. The same reference numerals are assigned to the same components.

Referring to FIG. 9, the touch device according to the embodiment may include a touch panel formed integrally with the display panel 600. That is, the substrate supporting at least one sensing electrode may be omitted.

For example, a sensing electrode serving as a sensor for sensing a touch disposed in the effective area and a wiring for applying an electrical signal to the sensing electrode may be formed on the inner side of the display panel. In detail, at least one sensing electrode or at least one wiring may be formed inside the display panel.

The display panel includes a first substrate 610 and a second substrate 620. At this time, at least one of the first sensing electrode 210 and the second sensing electrode 220 is disposed between the first substrate 610 and the second substrate 620. That is, at least one sensing electrode may be disposed on at least one surface of the first substrate 610 or the second substrate 620.

Referring to FIG. 9, the first sensing electrode 210 may be disposed on one surface of the cover substrate 110. Also, a first wiring connected to the first sensing electrode 210 may be disposed. The second sensing electrode 220 and the second wiring may be formed between the first substrate 610 and the second substrate 620. That is, the second sensing electrode 220 and the second wiring may be disposed inside the display panel, and the first sensing electrode 210 and the first wiring may be disposed outside the display panel.

The second sensing electrode 220 and the second wiring may be disposed on the upper surface of the first substrate 610 or on the rear surface of the second substrate 620.

In addition, a polarizer may be further included under the cover substrate 110.

In addition, at least one sensing electrode may be disposed on one surface of the polarizer.

When the display panel is a liquid crystal display panel, when the second sensing electrode is formed on the upper surface of the first substrate 610, the sensing electrode may be formed with a thin film transistor (TFT) have. In addition, when the second sensing electrode is formed on the back surface of the second substrate 620, a color filter layer may be formed on the sensing electrode, or a sensing electrode may be formed on the color filter layer. When the display panel is an organic light emitting display panel and the second sensing electrode is formed on the upper surface of the first substrate 610, the second sensing electrode may be formed with a thin film transistor or an organic light emitting diode .

The touch device according to the embodiment may omit at least one substrate supporting the sensing electrode. As a result, a touch device with a thin thickness and light weight can be formed. Further, the sensing electrode and the wiring are formed together with the element formed on the display panel, thereby simplifying the process and reducing the cost.

Hereinafter, an example of a display device to which a touch window according to the above-described embodiments is applied will be described with reference to FIGS. 10 to 13. FIG.

Referring to Fig. 10, a mobile terminal is shown as an example of a touch 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.

Referring to FIG. 11, the touch window may include a flexible flexible touch window. 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 window can be applied to a wearable touch or the like.

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

13, such a touch window can also be applied to a vehicle. That is, the touch window can be applied to various parts to which a touch window 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 (9)

A substrate including a valid region and a non-valid region;
A first sensing electrode disposed on the effective region;
A wiring electrode disposed on the ineffective area;
An intermediate layer disposed on the first sensing electrode; And
And a second sensing electrode disposed on the intermediate layer,
The thickness of the intermediate layer is less than 20 占 퐉,
Wherein the intermediate layer comprises a photosensitive material. The method according to claim 1,
Wherein the first sensing electrode and the second sensing electrode comprise a mesh shape. The method according to claim 1,
The first sensing electrode and the second sensing electrode may be formed of at least one of chromium (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), and molybdenum (Mo). Wherein the touch window comprises at least one of gold (Au), titanium (Ti), and alloys thereof. The method according to claim 1,
Wherein the wiring electrode includes a first wiring electrode and a second wiring electrode,
Wherein the first wiring electrode is disposed on the substrate,
And the second wiring electrode is disposed on the intermediate layer. The method according to claim 1,
Wherein the wiring electrode includes a first wiring electrode and a second wiring electrode,
Wherein the first wiring electrode and the second wiring electrode are disposed on the substrate. The method according to claim 1,
Wherein the intermediate layer comprises a transparent material. The method according to claim 1,
Wherein the thickness of the substrate is 20 占 퐉 to 100 占 퐉. The method according to claim 1,
Wherein the intermediate layer has a thickness of 1 占 퐉 to 20 占 퐉. The method according to claim 1,
Wherein the intermediate layer comprises an engraved pattern,
Wherein the second sensing electrode is disposed within the engraved pattern.

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