KR20160144713A - Touch window - Google Patents

Abstract

According to an embodiment, a touch window includes: a substrate including effective and ineffective areas; a sensing electrode on the effective area; a wiring electrode on the ineffective area; and a fingerprint sensor on at least one among the effective and ineffective areas. The fingerprint sensor includes: a first electrode on the substrate; an insulating layer on the first electrode; and a second electrode on the insulating layer. The first electrode is extended in a first direction. The second electrode includes: a first-sub-second electrode extended in the first direction; and a second-sub-second electrode extended in a second direction different from the first direction. The first-sub-second electrode and the second-sub-second electrode are overlapped with the first electrode. The width of the second-sub-second electrode is larger than the width of at least one among the first electrode and the first-sub-second electrode.

Description

Touch window {TOUCH WINDOW}

An embodiment relates to a touch window.

The fingerprint sensor is a sensor for detecting human fingerprints and is widely used not only in devices such as door locks which have been widely used but also in deciding whether to turn on / off or sleep mode of electronic devices in recent years .

The fingerprint sensor can be classified into an ultrasonic wave type, an infrared ray type, and a capacitive type according to its operation principle.

For example, a fingerprint sensor of a capacitive type has a structure in which a first electrode and a second electrode serving as transmission and reception are disposed on a substrate, and the fingerprint is transferred by the transmission and reception of the first electrode and the second electrode, Can be recognized.

On the other hand, when a metal is used as the electrode of the fingerprint sensor, there is a problem that the visibility is deteriorated due to the characteristics of the metal.

Therefore, a touch window including a fingerprint sensor of a new structure capable of solving such a problem is required.

Embodiments provide a touch sensor that includes a fingerprint sensor having improved visibility and electrical characteristics.

A touch window according to an embodiment includes: a substrate including a valid region and a non-valid region; A sensing electrode on the effective area; A wiring electrode on the non-effective region; And a fingerprint sensor on at least one of the valid region and the non-valid region, wherein the fingerprint sensor comprises: a first electrode on the substrate; An insulating layer on the first electrode; And a second electrode on the insulating layer, wherein the first electrode extends in a first direction, and the second electrode includes: a first sub second electrode extending in the first direction; And a second sub second electrode extending in a second direction different from the first direction, wherein the first sub second electrode and the second sub second electrode overlap with the first electrode, And the width of the second sub second electrode is larger than the width of at least one of the widths of the first electrode and the first sub second electrode.

The touch window according to the embodiments can reduce the width of the second electrode at the same time while increasing the coupling area of the fingerprint sensor. Accordingly, the fingerprint sensor according to the embodiment can improve the fingerprint recognition characteristic as the coupling area increases. Further, by reducing the width of the second electrode to a predetermined range, it is possible to reduce the total reflection due to the characteristics of the metal when the electrodes of the fingerprint sensor are arranged as the metal, thereby improving the visibility.

1 is a plan view of a touch window according to an embodiment.
2 is a plan view of a fingerprint sensor according to an embodiment.
Fig. 3 is an enlarged view of area A in Fig.
4 is a cross-sectional view taken along line BB 'of FIG.
5 to 7 are other cross-sectional views cut along the line BB 'in FIG.
8 is a plan view of a touch window according to an embodiment.
FIG. 9 is a cross-sectional view taken along the CC 'line of FIG. 8. FIG.
10 to 13 are views for explaining various types of touch windows according to the embodiment.
FIGS. 14 to 16 are views for explaining a touch device in which a touch window and a display panel are combined according to an embodiment.
17 to 20 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 a fingerprint sensor 500.

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 may have a curved surface with a random curvature, and may be curved or bent.

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.

A sensing electrode and a wiring electrode 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.

Alternatively, a separate cover substrate may be further disposed on the substrate 100. That is, the sensing electrode and the wiring electrode are supported by the substrate, and the substrate and the cover substrate can be directly or indirectly bonded through the adhesive layer.

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.

In addition, the position of the input device (e.g., a finger or the like) can be sensed in at least one of the valid area AA and the ineffective area UA. 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 be disposed on the substrate 100. For example, the sensing electrode 200 may be disposed on the effective region of the substrate 100.

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 extend in different directions and may be disposed on the substrate 100.

The first sensing electrode 210 and the second sensing electrode 220 are disposed on the same surface of the substrate 100 and between the first sensing electrode 210 and the second sensing electrode 220, An insulating material for insulating the first sensing electrode 210 and the second sensing electrode 220 may be disposed.

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 >

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.

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, 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.

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

Since the sensing electrode 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 is formed of metal, the pattern can be made invisible. In addition, the resistance of the touch window can be lowered even when the sensing electrode is applied to a touch window of a large size.

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.

The first wiring electrode 410 and the second wiring electrode 420 are disposed on the ineffective area UA of the substrate 100 and the first wiring electrode 410 and the second wiring electrode 420 may be connected to the first sensing electrode 310 and the second sensing electrode 320, respectively, and the other end 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.

The outer dummy layer 400 may be disposed on the ineffective area UA of the substrate 100. The outer dummy layer 400 may be formed of a material having a predetermined color so as to prevent wiring electrodes disposed on the ineffective area UA and a printed circuit board connecting the wiring electrodes to external circuits And can be formed by coating.

The outer dummy layer 400 may have a color suitable for a desired appearance. For example, the outer dummy layer 400 may include black or white pigment, and may represent 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 400 is formed of a film, if the substrate is flexible or includes a curved surface, the outer dummy layer can be easily disposed on one surface of the substrate, The reliability of the touch window can be improved.

A desired logo or the like may be formed on the outer dummy layer 400 by various methods. Such an outer dummy layer can be formed by vapor deposition, printing, wet coating or the like.

The outer dummy layer 400 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 400 may be disposed on at least one of the first surface and the second surface of the substrate.

A fingerprint sensor 500 may be disposed on the substrate 100. In detail, the fingerprint sensor 500 may be disposed on at least one of the effective area AA and the non-valid area UA of the substrate 100.

Referring to FIG. 2, the fingerprint sensor 500 may include a first electrode 510, a second electrode 520, and an insulating layer 530.

The first electrode 510 may be disposed on the substrate 100. The first electrode 510 may include a conductive material. For example, the first electrode 510 may include the same or similar material as the sensing electrode 200 or the wiring electrode 300 described above.

The insulating layer 530 may be disposed on the first electrode 510. For example, the insulating layer 530 may be disposed while surrounding the first electrode 510. In detail, the insulating layer 530 may be disposed while covering the side surfaces and the upper surface of the first electrode 510.

The second electrode 520 may be disposed on the insulating layer 530. The second electrode 520 may include a conductive material. For example, the second electrode 520 may include the same or similar material as the sensing electrode 200 or the wiring electrode 300 described above.

Although not shown in the drawing, wirings are connected to the first electrode 510 and the second electrode 520, and the wirings are connected to a driving chip of the printed circuit board to perform a fingerprint recognition function according to the touch of the fingerprint .

The first electrode 510 and the second electrode 520 may be disposed on the substrate 100 without contacting each other by the insulating layer 530.

The first electrode 510 may extend in the first direction on the substrate 100.

The second electrode 520 may include a first sub second electrode 521 and a second sub second electrode 522. The first sub second electrode 521 and the second sub second electrode 522 may extend in different directions.

In detail, the first sub second electrode 521 may extend in the first direction. That is, the first sub-second electrode 521 may extend in a direction corresponding to the first sensing electrode 510.

The second sub second electrode 522 may extend in a direction different from the first direction. That is, the second sub second electrode 522 may extend in a direction different from that of the first sensing electrode 510 and the first sub second sensing electrode 521.

 The first sub second electrode 521 and the second sub second electrode 522 may be partially overlapped. In detail, the first sub second electrode 521 and the second sub second electrode 522 may be disposed so as to intersect with each other, and the first sub second electrode 521 and the second sub second electrode The first sub second electrode 521 and the second sub second electrode 522 may be overlapped with each other at a portion where the first sub second electrode 521 and the second sub second electrode 522 cross each other.

In addition, the first sub second electrode 521 and the second sub second electrode 522 may be overlapped with the first sensing electrode 510.

For example, the first sub-second sensing electrode 521 may be overlapped with the first sensing electrode 510. The second sub second sensing electrode 522 overlaps the first sensing electrode 510 at a portion where the first sub second electrode 521 and the second sub second electrode 522 cross each other, .

In detail, the first sub second electrode 521 includes a first overlap region OA1 overlapping the first electrode 510, and the second sub second electrode 522 includes a first overlap region OA1, And may include a second overlapping area OA2 that overlaps.

Accordingly, the fingerprint sensor 500 may have a coupling area in which the first sensing electrode 510 and the second sensing electrode 520 overlap with each other. That is, the coupling area may be formed by the first overlap area OA1 and the second overlap area OA2.

The first overlapping area OA1 and the second overlapping area OA2 may overlap each other and the coupling area may be formed by the first overlapping area OA1 and the second overlapping area OA2. .

The first overlapping area OA1 and the second overlapping area OA2 may have different sizes. For example, the first overlapping area OA1 and the second overlapping area OA2 may be arranged in different cross-sectional areas.

In detail, the size of the first overlapping area OA1 may be greater than the size of the second overlapping area OA2. That is, a region where the first sub-second sensing electrode 521 overlaps with the first sensing electrode may be larger than a region where the second sub-second sensing electrode 522 overlaps with the first sensing electrode.

The width W1 of the first electrode 510 and the width W2 of the second electrode 520 may be about 10 mu m or less. In detail, the width of the first electrode 510, the first sub second electrode 521, and the second sub second electrode 522 may be about 10 탆 or less. The first electrode 510, the first sub second electrode 521, and the second sub second electrode 522 may be the same or different in width within the above range.

The length d of the first overlap region OA may be greater than the width of the first electrode 510 and the second electrode 520. The length d of the first overlap region OA is greater than the width of the first electrode 510, the first sub second electrode 521 and the second sub second electrode 522 .

Here, the length of the first overlap region OA may be a direction perpendicular to the width direction of the first sub second electrode 521, and may include not only a case where the second overlap region OA is perfectly vertical, And may include an obtuse angle or an acute angle by tolerance.

The length of the first overlap region OA may be about 20 mu m or less. In detail, the length of the first overlapping area OA may be about 15 mu m or less. More specifically, the length of the first overlapping area OA may be less than about 10 탆.

The length of the first overlap region OA may be greater than the width of the first electrode 510 and the second electrode 520 within the range.

As described above, the first electrode 510, the first sub second electrode 521, and the second sub second electrode 522 may include the same or similar materials as the sensing electrode or the wiring electrode. have. For example, the first electrode 510, the first sub second electrode 521, and the second sub second electrode 522 may include a metal. That is, the first electrode 510, the first sub second electrode 521, and the second sub second electrode 522 may be formed of one selected from the group consisting of Cr, Ni, Cu, ), Silver (Ag), molybdenum (Mo). Gold (Au), titanium (Ti), and alloys thereof.

Since the first electrode 510, the first sub second electrode 521, and the second sub second electrode 522 include a metal, electrode resistance can be reduced as compared with the use of other materials. Accordingly, the electrode resistance of the fingerprint sensor can be reduced, and the electrical characteristics of the fingerprint sensor can be improved.

Referring to FIGS. 5 to 7, an anti-reflection layer 550 may be further disposed on the second electrode 520. For example, an anti-reflection layer may be disposed on at least one sub-second electrode of the first sub-second electrode 521 and the second sub-second electrode 522.

The antireflection layer 550 may be disposed on one surface of the second electrode 520, that is, on at least one surface that is in contact with the insulating layer and the other surface opposite to the first surface.

When the antireflection layer 550 is disposed on the other surface of the second electrode 520, oxidation of the second electrode 520 including the metal can be prevented, and reflection due to the total reflection characteristic of the metal can be prevented It is possible to improve the visibility.

When the antireflection layer 550 is disposed on the other surface of the second electrode 520, the antireflection layer 550 is disposed between the second electrode and the insulating layer, and the second electrode 520 And the insulating layer 550 can be improved.

The anti-reflection layer 550 may be formed of a blackening material. For example, the antireflection layer 550 may comprise a black metal oxide. For example, the antireflection layer 550 may include a metal oxide of at least one of CuO, CrO, FeO, and Ni2O3. However, the embodiment is not limited thereto, and any black-based material capable of suppressing the reflectivity of the second electrode 520 may be used without limitation.

The second electrode 520 and the antireflection layer 550 may be formed simultaneously by the same process or may be separately formed by a separate process.

Hereinafter, a touch window according to another embodiment will be described with reference to FIGS. 8 and 9. FIG.

Referring to FIG. 8, the touch window according to another embodiment may include a substrate 100, a sensing electrode 200, a wiring electrode 300, and a fingerprint sensor 500.

The touch window according to another embodiment may be disposed on the ineffective area UA of the substrate 100, unlike the touch window according to the above-described embodiment.

8 and 9, the fingerprint sensor 500 may be disposed on the ineffective area UA of the substrate 100. In this case, That is, the first electrode 510, the second electrode 520, and the insulating layer 530 may be disposed on the ineffective area AA of the substrate 100.

The fingerprint sensor 500 may be disposed on the outer dummy layer 400. That is, the fingerprint sensor 500 may be disposed on the outer dummy layer 400 disposed on the ineffective area UA of the substrate 100.

The touch window according to the embodiments can reduce the width of the second electrode at the same time while increasing the coupling area of the fingerprint sensor. Accordingly, the fingerprint sensor according to the embodiment can improve the fingerprint recognition characteristic as the coupling area increases. Further, by reducing the width of the second electrode to a predetermined range, it is possible to reduce the total reflection due to the characteristics of the metal when the electrodes of the fingerprint sensor are arranged as the metal, thereby improving the visibility.

The touch window according to the above-described embodiments can be applied to various types of touch windows depending on the position of the sensing electrode.

Referring to FIG. 10, a touch window according to an embodiment may include a substrate 100 and a first sensing electrode 210 and a second sensing electrode 220 on the substrate 100.

The first sensing electrode 210 may extend in one direction on the effective area AA of the substrate 100. In detail, the first sensing electrode 210 may be disposed on one side of the substrate 100.

The second sensing electrode 220 may be disposed on one side of the substrate 100 while extending in a direction different from the first direction on the effective area AA of the substrate 100. That is, the first sensing electrode 210 and the second sensing electrode 220 may extend in different directions on the same surface of the substrate 100.

The first sensing electrode 210 and the second sensing electrode 220 may be insulated from each other on the substrate 100. A plurality of first unit sensing electrodes constituting the first sensing electrode 210 are connected to each other and a plurality of second unit sensing electrodes constituting the second sensing electrode 220 are spaced apart from each other . The second unit sensing electrodes are connected to each other by a bridge electrode 230 and an insulating material 250 is disposed on a portion where the bridge electrode 203 is disposed. The first sensing electrode 210, The electrodes 220 can be shorted to each other.

Accordingly, the first sensing electrode 210 and the second sensing electrode 220 may not be in contact with each other, but may be disposed on the same surface of the substrate 100, that is, on the same surface of the effective area AA, have.

The outer dummy layer 500 may be disposed on the ineffective area UA of the substrate 100.

The substrate 100 may be a cover substrate. That is, the first sensing electrode 210 and the second sensing electrode 220 may be disposed on the same side of the cover substrate. Alternatively, a separate cover substrate may be further disposed on the substrate 100.

The first wiring electrode 310 and the second wiring electrode 320 may be connected to the first sensing electrode 210 and the second sensing electrode 220 in the ineffective area UA, respectively.

11, another type of touch window includes a cover substrate 101 and a substrate 100, and includes a first sensing electrode 210 on the cover substrate 101, a second sensing electrode on the substrate 100, Electrode 220 may be included.

A first sensing electrode 210 extending in one direction and a first wiring electrode 310 connected to the first sensing electrode 210 are disposed on one surface of the cover substrate 101, A second sensing electrode 220 extending in a direction different from the first direction and a second wiring electrode 320 connected to the second sensing electrode 220 may be disposed on one side of the first sensing electrode 220.

Alternatively, the sensing electrode may not be disposed on the cover substrate 101, but the sensing electrode may be disposed on both sides of the substrate 100.

A first sensing electrode 210 extending in one direction and a first wiring electrode 310 connected to the first sensing electrode 210 are disposed on one surface of the substrate 100, A second sensing electrode 220 extending in a direction different from the first direction and a second wiring electrode 320 connected to the second sensing electrode 220 may be disposed on the other surface of the first sensing electrode 220.

12, a touch window according to another type includes a cover substrate 101, a first substrate 110, and a second substrate 120, and a first sensing electrode on the first substrate 110 and a second sensing electrode And a second sensing electrode on the second substrate 120.

In detail, a first sensing electrode 210 extending in one direction and a first wiring electrode 310 connected to the first sensing electrode 210 are disposed on one surface of the first substrate 110, A second sensing electrode 220 extending in a direction different from the first direction and a second wiring electrode 320 connected to the second sensing electrode 220 may be disposed on one surface of the substrate 120.

Referring to FIG. 13, another type of touch window may include a substrate 100, a first sensing electrode 210 and a second sensing electrode 220 on a substrate.

The first sensing electrode 210 and the second sensing electrode 220 may be disposed on the same side of the substrate 100. For example, the first sensing electrode 210 and the second sensing electrode 220 may be spaced apart from each other on the same surface of the substrate 100.

The first sensing electrode 210 may include 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. 310 may be disposed on the effective area and the ineffective area of the substrate 100 and the second wiring electrodes 320 may be disposed on the ineffective area of the substrate 100.

The touch window described above can be applied to a touch device in combination with a display panel. For example, the touch window may be coupled to the display panel by an adhesive layer.

Referring to FIG. 14, the touch device according to the embodiment may include a touch window disposed on the display panel 900.

Referring to FIG. 14, the touch device may be formed by combining the substrate 100 and the display panel 900. The substrate 100 and the display panel 900 may be bonded to each other through an adhesive layer 800. For example, the substrate 100 and the display panel 900 may be bonded to each other through an adhesive layer 800 including an optical transparent adhesive (OCA, 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 includes a first substrate 910 including a thin film transistor (TFT) and a pixel electrode, a second substrate 910 including color filter layers, The substrate 920 may be formed as a structure in which the liquid crystal layer is sandwiched between the substrates.

In addition, the display panel 900 may include a thin film transistor, a color filter, and a black matrix formed on a first substrate 910 and a second substrate 920 between the first substrate 910 Or a color filter on transistor (COT) structure. That is, a thin film transistor may be formed on the first substrate 910, 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 that is in contact with the thin film transistor is formed on the first substrate 910. 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 900 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 900.

When the display panel 900 is an organic light emitting display panel, the display panel 900 includes a self-luminous element that does not require a separate light source. In the display panel 900, a thin film transistor is formed on a first substrate 910, 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. Further, the organic light emitting device may further include a second substrate 920 serving as an encapsulation substrate for encapsulation.

Referring to FIG. 15, the touch device according to the embodiment may include a touch window formed integrally with the display panel 900. 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 900. That is, at least one sensing electrode may be formed on at least one surface of the first substrate 910 or the second substrate 920.

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

Referring to FIG. 15, a first sensing electrode 210 may be disposed on one surface of the substrate 100. 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 900. In addition, a second wiring connected to the second sensing electrode 220 may be disposed.

An adhesive layer 800 may be disposed between the substrate 100 and the display panel 900 so that the cover substrate and the display panel 900 may be bonded to each other.

Further, the substrate 100 may further include a polarizer. The polarizing plate may be a linear polarizing plate or an external light reflection preventing polarizing plate. 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 polarizing plate may be an external light reflection preventing 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.

Referring to FIG. 16, the touch device according to the embodiment may include a touch window formed integrally with the display panel 900. 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 910 and a second substrate 920. At least one of the first sensing electrode 210 and the second sensing electrode 220 is 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. 16, a first sensing electrode 210 may be disposed on one surface of the substrate 100. Also, a first wiring connected to the first sensing electrode 210 may be disposed. Further, a second sensing electrode 220 and a second wiring may be formed between the first substrate 910 and the second substrate 920. 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 910 or the rear surface of the second substrate 920.

Further, the substrate 100 may further include a 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 910, the sensing electrode may be formed with a thin film transistor (TFT) have. When the second sensing electrode is formed on the back surface of the second substrate 920, 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, when the second sensing electrode is formed on the upper surface of the first substrate 910, 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. 17 to 20. FIG.

Referring to Fig. 17, 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. 18, 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. 19, 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.

Further, referring to Fig. 20, 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 (10)

A substrate including a valid region and a non-valid region;
A sensing electrode on the effective area;
A wiring electrode on the non-effective region; And
And a fingerprint sensor on at least one of the valid region and the non-valid region,
Wherein the fingerprint sensor comprises:
A first electrode on the substrate;
An insulating layer on the first electrode; And
And a second electrode on the insulating layer,
Wherein the first electrode extends in a first direction,
The second electrode includes: a first sub second electrode extending in the first direction; And a second sub second electrode extending in a second direction different from the first direction,
The first sub second electrode and the second sub second electrode overlap the first electrode,
Wherein the width of the second sub second electrode is larger than the width of at least one of the widths of the first electrode and the first sub second electrode. The method according to claim 1,
Wherein the first sub second electrode includes a first overlap region overlapping the first electrode,
The second sub second electrode includes a second overlap region overlapping the first electrode,
Wherein the size of the first overlapping area is larger than the size of the second overlapping area. 3. The method of claim 2,
Wherein the length of the first overlapping region is 20 占 퐉 or less. The method of claim 3,
Wherein the length of the first overlap region is larger than the width of at least one of the first electrode and the second sub second electrode. The method according to claim 1,
Wherein at least one of the first electrode and the second sub-second electrode has a width of 10 mu m or less. The method according to claim 1,
Wherein at least one of the first electrode, the first sub-second electrode, and the second sub-second electrode includes a metal. The method according to claim 6,
And an anti-reflection layer is disposed on at least one of the first sub-second electrode and the second sub-second electrode. The method according to claim 1,
Wherein the fingerprint sensor is disposed on an effective area of the substrate. The method according to claim 1,
Wherein the substrate comprises a cover substrate. 10. The method of claim 9,
An outer dummy layer is disposed on the ineffective area of the substrate,
Wherein the fingerprint sensor is disposed on the outer dummy layer on the ineffective area of the substrate.

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