WO2017078257A1

WO2017078257A1 - Fingerprint sensor cover

Info

Publication number: WO2017078257A1
Application number: PCT/KR2016/009466
Authority: WO
Inventors: 남택훈; 방정환; 윤석표; 이진석; 권도엽; 박성규; 이규린; 허재학
Original assignee: 엘지이노텍 주식회사
Priority date: 2015-11-02
Filing date: 2016-08-25
Publication date: 2017-05-11
Also published as: CN208188801U

Abstract

A fingerprint sensor cover according to an embodiment comprises: a substrate including a valid area and an invalid area; a groove formed on the invalid area for the arrangement of a fingerprint sensor; and a decoration layer arranged on the invalid area of the substrate, wherein the decoration layer comprises a first decoration layer arranged on an outer area of the groove and a second decoration layer arranged on an inner area of the groove, the groove comprises a lower surface and an inner side surface connecting the lower surface and one surface of the substrate, the inner area of the groove includes an area having the lower surface and the inner side surface, and the inner side surface is formed so as to be inclined with respect to the lower surface.

Description

Fingerprint sensor cover

An embodiment relates to a fingerprint sensor cover.

The fingerprint sensor is a sensor that detects a human fingerprint, and is widely used to determine whether a door lock or the like has recently been widely applied, as well as whether to turn on or off the power of an electronic device. It is becoming.

When the fingerprint sensor is applied to the touch window, the fingerprint sensor may be disposed on one surface of the substrate.

However, due to the arrangement of the fingerprint sensor, there is a problem in that the overall thickness of the touch window is increased. In addition, there is a problem that the fingerprint sensing characteristics are degraded due to the thickness of the substrate.

In order to solve this problem, a substrate including a groove may be used.

That is, one portion of the substrate may be etched and a fingerprint sensor may be inserted into the etching portion.

In this case, in order to prevent the fingerprint sensor from being recognized from the outside, after the decor layer is disposed on the etching portion, the fingerprint sensor may be disposed on the decor layer.

However, the connection portion in the etched portion and the non-etched portion, and when the deco layer is formed inside the etched portion, the adhesive force of the deco layer may be reduced due to the step, or a region in which the deco layer is not disposed may be formed. There is a problem that the fingerprint sensor is visually recognized by the area.

In addition, the substrate including the groove has a problem that the decoration layer is difficult to uniformly disposed due to the step of the groove. That is, light leakage may occur due to the separation between the outer layer of the groove and the decor layer of the inner region of the groove. For this reason, it is difficult to express the sense of unity of the decor portion, and color difference may occur in the outer region of the groove and the inner region of the groove.

Therefore, there is a need for a fingerprint sensor cover having a new structure and a touch device including the same, which can solve the above problems.

Embodiments provide a fingerprint sensor cover having improved visibility and reliability.

A fingerprint sensor cover according to an embodiment includes a substrate including an effective area and an invalid area; A groove formed for placement of a fingerprint sensor on the invalid area; And a deco layer disposed on the ineffective region of the substrate, the deco layer including a first deco layer disposed on an outer region of the groove and a second deco layer disposed on an inner region of the groove; The groove includes a lower surface and an inner surface connecting the lower surface and one surface of the substrate, the inner region of the groove includes a region in which the lower surface and the inner surface are formed, and the inner surface is in relation to the lower surface. It is formed at an angle.

In the fingerprint sensor cover according to the embodiment, the decor layer may be disposed on the substrate including the groove. The first decor layer may be disposed on the outer region of the groove, and the second decor layer may be disposed on the inner region of the groove.

That is, the fingerprint sensor cover according to the embodiment has a predetermined thickness on the outer region of the groove and the inner region of the groove as the first and second decor layers are disposed on the outer region of the groove of the substrate and the inner region of the groove, respectively. Deco layers can be disposed. Accordingly, the visibility of the touch device including the fingerprint sensor cover can be improved.

In addition, the first decor layer and the second decor layer may include an overlapping region. That is, one end of the first decor layer may surround the second decor layer, or the first decor layer may wrap one end of the second decor layer.

Accordingly, the gap between the first decor layer and the second decor layer can be prevented. In addition, it is possible to solve the problem of deterioration of visibility caused by the thickness of the decor layer on the inclined surface of the groove.

The fingerprint sensor cover according to the embodiment may be formed such that the inner surface or the corner area of the groove on which the decor layer and the fingerprint sensor are disposed has an inclination or a constant radius of curvature.

Accordingly, when the decor layer is formed in the groove, a defect in which pinholes are formed can be prevented, and the decor layer can be easily formed. That is, by forming the deco layer on the inner side and the bottom surface of the groove by alleviating the step difference by the inclination and the radius of curvature, the area where the deco layer is not printed and that is, the pinhole is easily formed. The occurrence of the region can be prevented.

Accordingly, when the fingerprint sensor is disposed inside the groove, it is possible to prevent the decor layer from being visually recognized due to the poor printing of the decor layer. Therefore, the overall reliability and visibility of the touch window including the fingerprint sensor can be improved.

1 is a plan view of a touch window according to an embodiment.

2 is a plan view of a substrate according to an embodiment.

3 to 5 are cross-sectional views of the substrate cut along the line AA ′ of FIG. 2.

6 to 8 are cross-sectional views of a fingerprint sensing device in which a deco layer and a fingerprint sensor are disposed in a groove.

9 to 16 are cross-sectional views of a fingerprint sensor cover in which a deco layer is disposed in the groove.

17 to 19 illustrate manufacturing steps of the fingerprint sensor cover of FIG. 7.

20 to 22 are diagrams illustrating manufacturing steps of the fingerprint sensor cover according to FIG. 8.

23 and 24 illustrate manufacturing steps of the fingerprint sensor cover of FIG. 16.

25 is a top view of a touch window according to another embodiment.

FIG. 26 is a cross-sectional view of the substrate cut along the line BB ′ of FIG. 25.

27 is a plan view of a touch window according to another embodiment.

FIG. 28 is a cross-sectional view of the substrate cut along the line CC ′ in FIG. 27.

29 to 31 are diagrams for describing various types of touch windows according to an embodiment.

32 to 34 are diagrams for describing a touch device in which a touch window and a display panel are coupled according to an embodiment.

35 to 38 are diagrams illustrating an example of a touch device apparatus to which a touch window is applied according to an embodiment.

In the description of embodiments, each layer, region, pattern, or structure may be “on” or “under” the substrate, each layer, region, pad, or pattern. Substrate formed in ”includes all formed directly or through another layer. Criteria for the top / bottom or bottom / bottom of each layer are described with reference to the drawings.

In addition, when a part is "connected" with another part, this includes not only the case where it is "directly connected" but also the case where it is "indirectly connected" with the other member in between. In addition, when any part "includes" any component, this means that it is possible to further include other components, not to exclude other components unless otherwise stated.

In the drawings, the thickness or size of each layer (film), region, pattern, or structure may be modified for clarity and convenience of description, and thus do not necessarily reflect the actual size.

Referring to FIG. 1, the touch window according to the embodiment may include a substrate 100, a sensing electrode 200, a wiring electrode 300, a decor layer 400, and a fingerprint sensor 500.

The substrate 100 may be rigid or flexible.

For example, the substrate 100 may include glass or plastic. In detail, the substrate 100 may include chemically strengthened / semi-hardened glass such as soda lime glass or aluminosilicate glass, or may be polyimide (PI) or polyethylene terephthalate (PET). It may include reinforced or soft plastics such as propylene glycol (PPG) polycarbonate (PC) or 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), an isotropic polycarbonate (PC), or an isotropic polymethyl methacrylate (PMMA).

Sapphire is a material that can be used as a cover substrate because of its excellent electrical properties such as permittivity, which can dramatically increase the touch response speed, and can easily implement spatial touch such as hovering and high surface strength. Here, hovering refers to a technique of recognizing coordinates even at a distance far from the display.

In addition, the substrate 100 may be curved while having a partially curved surface. That is, the substrate 100 may be partially curved and partially curved. In detail, an end of the substrate 100 may have a curved surface and may have a surface including a curved or random curvature and may be curved or bent.

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

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

The substrate 100 may include a cover substrate. Alternatively, a separate cover substrate may be further disposed on at least one surface of one surface and the other surface of the substrate 100. In addition, when a separate cover substrate is further disposed on the substrate 100, the substrate and the cover substrate may be laminated through an adhesive layer. Accordingly, the cover substrate and the substrate may be separately formed, which may be advantageous in mass production of the touch window.

An effective area AA and an invalid area UA may be defined in the substrate 100.

A display may be displayed in the effective area AA, and a display may not be displayed in the non-effective area UA disposed around the effective area AA.

In addition, at least one of the effective area AA and the invalid area UA may detect a position of an input device (eg, a finger, a stylus pen, etc.). When an input device such as a finger is in contact with such a touch window, a difference in capacitance occurs at a portion where the input device contacts, and a portion where such a difference occurs may be detected as a contact position.

The substrate 100 may include a fingerprint sensing area FA. An area of the fingerprint sensing area FA may be smaller than an area of the invalid area UA. The location of the fingerprint sensing area FA may overlap with the location of the invalid area UA. That is, the fingerprint sensing area FA may be one area of the invalid area UA. In detail, the fingerprint sensing area FA may be located on the invalid area UA.

The fingerprint sensing area FA may be an area for recognizing a fingerprint of a finger. That is, the fingerprint sensing area FA may mean an area in which the fingerprint sensor 500 is disposed.

The fingerprint sensing area FA may be disposed below or above the substrate 100.

In addition, the substrate 100 may be formed in a rectangular shape including a long side and a short side, and the fingerprint sensing area FA may be closer to the short side than the long side.

In addition, an area of the fingerprint sensing area FA may be smaller than that of the substrate 100. In detail, an area of the fingerprint sensing area FA may be about 0.5% to about 5% of the total area of the substrate 100.

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

A deco layer 400 may be disposed on the substrate 100. The deco layer 400 may be disposed on the ineffective area UA. The deco layer 400 may include a first deco layer 410 and a second deco layer 420.

The first decor layer 410 may be disposed on an outer region of the groove H. In detail, the first decor layer 410 may be disposed in an invalid area UA other than the fingerprint sensing area FA. Here, the outer region of the groove H may be a region where the groove H is not formed. The outer region of the groove H may be an unprocessed region of the substrate. That is, the outer region of the groove H may mean a region having a constant thickness. In detail, the outer region of the groove H may be one region in the ineffective region UA having the same thickness as the thickness of the effective region AA and the substrate 100 measured in the effective region AA. have.

The first decor layer 410 is coated with a material having a predetermined color so that the wiring electrode disposed on the ineffective area and a printed circuit board connecting the wiring electrode to an external circuit can be hidden from the outside. Can be formed.

The first deco layer 410 may have a color suitable for a desired appearance. For example, the first deco layer 410 may include black or white pigments and may represent black or white color. Alternatively, various color films may be used to represent various color colors such as red and blue.

In addition, the first decor layer 410 may form a desired logo or the like in various ways. The first decor layer 410 may be formed by deposition, printing, wet coating, or adhesion.

The first decor layer 410 may be arranged in at least one layer. For example, the decor layer may be disposed in one layer or in at least two layers having different widths.

The second decor layer 420 may be disposed on an inner region of the groove H. In detail, the second decor layer 420 may be disposed in the fingerprint sensing area FA. Here, the inner region of the groove H may be an area where the groove H is formed. The inner region of the groove H may be a processing region of the substrate. That is, the inner region of the groove H may be one region in the ineffective region UA having a thickness smaller than the thickness of the substrate 100 measured in the effective region AA. In detail, the inner region of the groove H has an inclination different from that of one surface of the substrate, the inner surface having a thickness smaller than the thickness of the substrate measured in the effective region AA, and parallel to one surface of the substrate, and the effective It may include a lower surface having a thickness smaller than the thickness of the substrate measured in the region (AA).

1 to 28, a fingerprint sensing cover, a fingerprint sensing device, and a touch window including the same will be described.

The fingerprint sensing cover according to the embodiment includes a substrate 100 including the effective area AA and the invalid area UA, a groove H formed on the invalid area, and an invalid area of the substrate 100. The decor layer 400 may be disposed on the region.

In an embodiment, a fingerprint sensing device may include a substrate 100 including the effective area AA and an invalid area UA, a groove H formed on the invalid area, and an invalid area of the substrate 100. It may include a deco layer 400 disposed on an area and a fingerprint sensor 500 disposed on the deco layer 400.

The touch window may include a substrate 100 including the effective area AA and an invalid area UA, a groove H formed on the invalid area, and an invalid area of the substrate 100. It may include a deco layer 400 disposed on, a fingerprint sensor 500 disposed on the deco layer 400, and a sensing electrode disposed on the effective area.

Hereinafter, the substrate 100 and the decor layer 400 of the fingerprint sensing cover and the fingerprint sensing device including the same according to the embodiment will be described with reference to FIGS. 2 to 16.

Referring to FIG. 2, the substrate 100 may include a groove H. For example, a groove H may be formed on the ineffective area UA of the substrate 100. The groove H may be formed on the ineffective area UA to place a fingerprint sensor.

The groove H may be disposed in a portion of the ineffective area UA of the substrate 100. For example, the groove H may be disposed below or above the non-effective area UA of the substrate 100. In the drawing, although the groove H is disposed in the lower bezel area of the substrate 100, the embodiment is not limited thereto and the groove H may be disposed in the upper bezel area of the substrate 100. Of course.

In addition, although the groove (H) is shown in the figure is a polygonal shape, the embodiment is not limited thereto, and may include various shapes such as a circular shape.

3 to 16, the substrate 100 may include a groove H, and a decoration layer and a fingerprint sensor 500 may be disposed in the groove H.

3 to 5, the substrate 100 may include one surface 100a and the other surface 100b opposite to the surface 100a.

The groove H may be formed on at least one surface of one surface 100a and the other surface 100b of the substrate 100. The groove H may be formed on one surface 100a of the substrate 100.

The groove H may be formed by partially etching one surface 100a of the substrate 100. Accordingly, the groove H may include a lower surface L and inner surfaces S1 and S2 connecting the lower surface L and one surface 100a of the substrate. The inner surfaces S1 and S2 may be formed to be inclined with respect to the lower surface L. FIG. The inner surfaces S1 and S2 may be formed to be inclined with respect to the one surface 100a of the substrate 100.

The inner side surface may include a first inner side surface S1 and a second inner side surface S2. The first inner side surface S1 and the second inner side surface S2 may be disposed to face each other.

The lower surface L may connect the first inner surface S1 and the second inner surface S2. That is, the first inner surface S1, the second inner surface S2, and the lower surface L may be connected to each other.

The inner region of the groove may include a region where the lower surface and the inner surface are formed.

For example, referring to FIG. 3, at least one inner surface of the first inner surface S1 and the second inner surface S2 may be inclined with respect to the lower surface L. FIG. The first inner surface S1 and the second inner surface S2 may be inclined with respect to the lower surface L. FIG.

The first inner side surface S1 may be formed to have an inclination with respect to the lower surface L. FIG. For example, the first inner surface S1 may be formed to have an inclination at a first angle θ1 with respect to the lower surface L.

The second inner side surface S2 may be formed to have an inclination with respect to the lower surface L. FIG. For example, the second inner side surface S2 may be formed to have an inclination at a second angle θ2 with respect to the lower surface L.

At least one of the first angle θ1 and the second angle θ2 may be an obtuse angle. That is, at least one inner surface of the first inner surface S1 and the second inner surface S2 may be inclined at an obtuse angle with respect to the lower surface L. FIG.

The first inner surface S1 and the second inner surface S2 may be inclined at an obtuse angle with respect to the lower surface L. FIG.

The first angle θ1 formed by the first inner side surface S1 and the lower surface L may be about 125 ° or more. In detail, the first angle θ1 formed by the first inner side surface S1 and the lower surface L may be about 125 ° to about 145 °.

In addition, the second angle θ2 formed by the second inner side surface S2 and the lower surface L may be about 125 ° or more. In detail, the second angle θ2 formed by the second inner side surface S2 and the lower surface L may be about 125 ° to about 145 °.

The first angle θ1 and the second angle θ2 may have inclinations at the same or similar angles or at different angles in the inclination angle range. Here, the angles that are similar to each other may mean a difference in inclination angles within about 5 °.

When at least one of the first angle θ1 and the second angle θ2 is less than about 125 °, when the decor layer is formed inside the groove H, the first connection is made by the inclination angle. In the surface C1 and the second connection surface C2, the decoration layer may not be printed with a uniform thickness, or a pinhole may be generated to allow the fingerprint sensor inside the groove to be recognized from the outside.

In addition, when at least one of the first angle θ1 and the second angle θ2 exceeds about 145 °, the size of the fingerprint sensing area FA disposed on the ineffective area UA is Increasingly, when forming another functional area or the like, the position or size of the functional area may be limited.

The width W of the groove H may be different for each position of the groove H. In detail, the width W of the groove H may be wider as it extends from the lower surface L of the groove H to one surface 100a of the substrate 100.

The width W of the groove H may vary according to the size of a fingerprint sensor or the like accommodated in the groove H.

The substrate 100 may have a thickness of about 500 μm to about 600 μm. In detail, the distance from one surface 100a of the substrate 100 to the other surface 100b of the substrate 100 may be about 500 μm to about 600 μm. The other surface 100b of the substrate 100 may be a surface on which a touch is sensed in the fingerprint sensing area FA.

The groove H may be formed to have a height of about 50% or more with respect to the thickness of the substrate 100.

The distance T from the lower surface L of the groove H to the other surface 100b of the substrate 100 may be about 300 μm or less. In detail, the distance T from the lower surface L of the groove H to the other surface 100b of the substrate 100 may be about 100 μm to about 300 μm. In more detail, the distance T from the lower surface L of the groove H to the other surface 100b of the substrate 100 may be about 150 μm to about 300 μm.

When the distance T from the lower surface L of the groove H to the other surface 100b of the substrate 100 is less than about 100 μm, the depth of the groove H becomes too large, whereby the substrate ( The overall strength of 100) may be lowered, thereby lowering reliability.

When the distance T from the lower surface L of the groove H to the other surface 100b of the substrate 100 exceeds about 300 μm, the fingerprint sensor 500 is formed on the other surface 100b of the substrate. Since the distance of the farther away, the recognition sensitivity according to the touch of the fingerprint may decrease.

The groove H includes the first inner surface S1 and the second inner surface S2, and the first inner surface S1 and the second inner surface S2 are the lower surface L. It can be connected with.

Lower connection surfaces C1 and C2 connecting the inner surfaces S1 and S2 and the lower surface L may have a curvature.

The first and second inner surfaces S1 and S2 may be connected to the lower surface L by lower connection surfaces C1 and C2. Lower connection surfaces C1 and C2 having a predetermined radius of curvature may be disposed between the first and second inner surfaces S1 and S2 and the lower surface L. Accordingly, the first and second inner surfaces S1 and S2 and the lower surface L may be roundly connected. In detail, the first inner surface S1 is connected to the lower surface L by a first connection surface C1, and the second inner surface S2 is the lower surface by the second connection surface C2. May be connected to (L).

The first connection surface C1 may be an edge region where the first inner surface S1 and the lower surface L meet. Alternatively, the first connection surface C1 may include a curved surface.

The second connection surface C2 may be an edge region where the second inner side surface S2 and the bottom surface L meet. Alternatively, the second connection surface C2 may include a curved surface.

That is, when the first connecting surface C1 and the second connecting surface C2 include a curved surface, the first connecting surface C1 and the second connecting surface C2 may have a predetermined curvature.

For example, referring to FIG. 4, the first inner surface S1 and one surface 100a of the substrate are connected to each other, and the second inner surface S2 and one surface 100a of the substrate are connected to each other. Can be.

Upper connection surfaces C3 and C4 connecting the inner surfaces S1 and S2 and the one surface 100a of the substrate may have a curvature.

The first and second inner surfaces S1 and S2 may be connected to one surface 100a of the substrate by upper connection surfaces C3 and C4. Upper connection surfaces C3 and C4 having a predetermined radius of curvature may be disposed between the first and second inner surfaces S1 and S2 and the one surface 100a of the substrate. Accordingly, the first and second inner surfaces S1 and S2 and the one surface 100a of the substrate may be roundly connected.

In detail, the first inner surface S1 and one surface 100a of the substrate are connected by a third connection surface C3, and the second inner surface S2 and one surface 100a of the substrate are fourth. It may be connected to each other by the connecting surface (C4).

At least one connection surface of the third connection surface C3 and the fourth connection surface C4 may include a curved surface. The third connection surface C3 and the fourth connection surface C4 may include curved surfaces.

That is, the third connection surface C3 and the fourth connection surface C4 may be formed as curved surfaces having a constant curvature.

The radius of curvature of the upper connection surface may be about 2R (mm) or more. The third connection surface C3 and the fourth connection surface C4 may have a radius of curvature of about 2 R (mm) or more. When the third connection surface C3 and the fourth connection surface C4 have a radius of curvature of less than about 2 R (mm), when the decor layer is formed inside the groove H, the third connection surface is formed by the inclination angle. The decoration layer may not be printed with a uniform thickness on the connection surface C3 and the fourth connection surface C4, or a pinhole may be generated to allow the fingerprint sensor inside the groove to be recognized from the outside.

For example, referring to FIG. 5, the lower connection surfaces C1 and C2 connecting the inner surfaces S1 and S2 and the lower surface L and the inner surfaces S1 and S2 and one surface of the substrate An upper connection surface (C3, C4) for connecting 100a), the lower connection surface (C1, C2) and the upper connection surface (C3, C4) may have a curvature.

The first and second inner surfaces S1 and S2 may be connected to the lower surface L by lower connection surfaces C1 and C2. Lower connection surfaces C1 and C2 having a predetermined radius of curvature may be disposed between the first and second inner surfaces S1 and S2 and the lower surface L. Accordingly, the first and second inner surfaces S1 and S2 and the lower surface L may be roundly connected.

In detail, the first inner surface S1 is connected to the lower surface L by a first connection surface C1, and the second inner surface S2 is the lower surface by the second connection surface C2. May be connected to (L).

The first connection surface C1 and the second connection surface C2 may include curved surfaces.

That is, when the first connecting surface C1 and the second connecting surface C2 include a curved surface, the first connecting surface C1 and the second connecting surface C2 may have a predetermined curvature. The lower connection surface may be formed with a first radius of curvature. For example, the first connection surface C1 and the second connection surface C2 may be formed while having a first radius of curvature R1.

In addition, the first inner surface S1 and one surface 100a of the substrate may be connected to each other, and the second inner surface S2 and one surface 100a of the substrate may be connected to each other.

At least one connection surface of the third connection surface C3 and the fourth connection surface C4 may include a curved surface. For example, referring to FIG. 3, the third connection surface C3 and the fourth connection surface C4 may include curved surfaces.

That is, the third connection surface C3 and the fourth connection surface C4 may be formed as curved surfaces having a constant curvature. The upper connection surface may be formed with a second radius of curvature. For example, the third connection surface C3 and the fourth connection surface C4 may be formed while having the second radius of curvature R2.

The first radius of curvature R1 and the second radius of curvature R2 may have different sizes. In detail, the first radius of curvature R1 may be greater than the second radius of curvature R2.

For example, the first radius of curvature R1 may be about 0.55 R (mm) or less. In addition, the second radius of curvature R2 may be about 0.04R (mm) or less. The first radius of curvature R1 may be greater than the second radius of curvature R2 within the range.

In detail, the first radius of curvature R1 may be about 0.45R (mm) to about 0.55R (mm). In addition, the second radius of curvature R2 may be about 0.03R (mm) to about 0.04R (mm).

When the first layer of curvature R1 and the second radius of curvature R2 have a curvature outside the range, when the deco layer is formed inside the groove H, the first connection surface C1 is inclined by an inclination angle. ), The second layer (C2), the third connection surface (C3) and the fourth connection surface (C4) Deco layer is not printed with a uniform thickness, or a pinhole is generated, the fingerprint inside the groove from the outside Sensors and the like can be viewed.

That is, referring to FIGS. 3 to 5, in the fingerprint sensor cover, the fingerprint sensing device, and the touch window including the same, the inner surface or the corner area of the groove in which the decor layer and the fingerprint sensor are disposed may have an inclination or It can have a constant radius of curvature.

Accordingly, when the decor layer is formed in the groove, a defect in which pinholes are formed can be prevented, and the decor layer can be easily formed. That is, by forming the deco layer on the inner side and the bottom of the groove by alleviating the step difference by the inclination and curvature, the deco layer is easily formed and the area where the deco layer is not printed, that is, the pinhole region. This can be prevented from occurring.

Hereinafter, referring to FIG. 6, the arrangement of the decor layer and the fingerprint sensor in the groove of the substrate according to the embodiments will be described in detail.

Referring to FIG. 6, a decor layer may be disposed on an ineffective region of the substrate 100. In detail, a first deco layer 410 may be disposed on one surface 100a of the substrate 100, and a second deco layer 420 may be disposed in the groove H.

The first deco layer 410 may be disposed on an area excluding the area where the groove H is formed on one surface 100a of the substrate 100.

The second decor layer 420 may be disposed on a region where the groove H is formed on one surface 100a of the substrate 100. That is, the second decor layer 420 may include the first inner surface, the second inner surface, the lower surface, the first connecting surface, the second connecting surface, the third connecting surface of the groove H, and the like. It may be disposed on the fourth connection surface.

The first decor layer 410 and the second decor layer 420 may be connected to each other and disposed. For example, the first deco layer 410 and the second deco layer 420 may be connected to each other on one surface of the substrate, that is, an outer region of the groove. One end of the first deco layer 410 may directly contact one end of the second deco layer 420. In this case, the first decor layer 410 may be disposed at a height corresponding to the second decor layer 420.

Alternatively, the first deco layer 410 and the second deco layer 420 may partially overlap each other.

The first decor layer 420 and the second decor layer 420 may be arranged in at least one layer. That is, the first decor layer 420 and the second decor layer 420 may be arranged in a plurality of layers.

The fingerprint sensor 500 may be prevented from being recognized from the outside by the second decor layer 420.

The first decor layer 410 and the second decor layer 420 may be formed in the same or similar colors. As the first decor layer 410 and the second decor layer 420 are formed in the same or similar color to each other, in the region where the first decor layer 410 and the second decor layer 420 are disposed. A sense of unity can be formed.

Alternatively, the first deco layer 410 and the second deco layer 420 may be formed in different colors. Since the first decor layer 410 and the second decor layer 420 are formed in different colors, a region in which the first decor layer 410 and the second decor layer 420 are disposed may be distinguished. In addition, the area where the fingerprint sensor is disposed can be easily distinguished from the outside.

The fingerprint sensor 500 may be disposed in the groove H. The groove H may accommodate the fingerprint sensor 500. In detail, the fingerprint sensor 500 may be disposed on the second decor layer 420 in the groove H.

The fingerprint sensor 500 may be arranged with a variety of fingerprint sensors according to the operating principle. In detail, the groove H may be provided with various fingerprint sensors driven according to various operating principles such as an ultrasonic method, an infrared method, and a capacitive method.

The fingerprint sensor 500 may detect a fingerprint in the fingerprint sensing area FA and perform various operations according to the recognition of the fingerprint.

Although not shown in the drawing, a protective layer for protecting the fingerprint sensor 500 may be further disposed inside the groove H.

The fingerprint sensor 500 may have a height corresponding to one surface of the substrate or a different height.

For example, referring to FIG. 6, one surface of the substrate and one surface of the fingerprint sensor 500 may have a height corresponding to each other or a similar height.

For example, referring to FIG. 7, one surface of the substrate and one surface of the fingerprint sensor 500 may have different heights. One surface of the substrate may have a height greater than one surface of the fingerprint sensor 500. That is, one surface of the substrate may be greater than the other surface of the substrate than one surface of the fingerprint sensor 500.

For example, referring to FIG. 8, one surface of the substrate and one surface of the fingerprint sensor 500 may have different heights. One surface of the substrate may have a height smaller than one surface of the fingerprint sensor 500. That is, one surface of the substrate may be smaller than the other surface of the substrate than one surface of the fingerprint sensor 500.

Hereinafter, a deco layer including an overlapping region will be described with reference to FIGS. 7 to 16. The deco layer 400 may include a first deco layer 410 disposed on an outer region of the groove and a second deco layer 420 disposed on an inner region of the groove. The first deco layer 410 and the second deco layer 420 may include a first overlapping region disposed to overlap each other.

7 to 16, the substrate 100 may include a groove on any one surface of one surface 100a and the other surface 100b opposite to the one surface.

For example, the groove H may be formed on one surface of the substrate 100. One surface of the substrate 100 may have a step in an area where a groove is formed.

The other surface 100b opposite to one surface of the substrate 100 may not include a groove. That is, the other surface of the substrate 100 may not have a step. For example, the other surface of the substrate 100 may be a plane.

Accordingly, the substrate 100 may not have a uniform thickness. That is, the thickness of the substrate 100 in the region where the groove is formed and the region where the groove is not formed may be different from each other.

In the region where the groove is formed, the thickness T1 of the substrate 100 may be smaller than the thickness T2 of the substrate 100 in the region where the groove is not formed.

The thickness T1 of the substrate including the groove in the non-effective area UA may be smaller than the thickness T2 of the substrate of the effective area AA.

Alternatively, the thickness T1 of the substrate including the groove in the non-effective area UA may be smaller than the thickness T2 of the substrate including the groove in the non-effective area UA.

Here, the thickness T1 of the substrate 100 in the region where the groove is formed may mean that the thickness T1 is measured in the center region of the groove.

In the region where the groove is formed, the thickness T1 of the substrate 100 may be about 50 μm to about 300 μm. For example, the thickness T1 of the substrate 100 in the region where the groove is formed may be about 100 μm to about 300 μm. For example, the thickness T1 of the substrate of the effective area AA may be about 150 μm to about 300 μm.

When the thickness T1 of the substrate 100 is less than about 50 μm in the region where the groove is formed, the strength of the substrate 100 may decrease. In addition, when the thickness T1 of the substrate 100 exceeds about 300 μm in the region where the groove is formed, as the thickness of the substrate 100 is increased, the fingerprint sensor and the touch surface of the substrate are increased. As the distance is increased, sensing characteristics of the fingerprint sensor may be degraded.

In addition, in the region where the groove is not formed, the thickness T2 of the substrate 100 may be about 300 μm to about 1000 μm. For example, in the region where the groove is not formed, the thickness T2 of the substrate 100 may be about 300 μm to about 700 μm. For example, in the region where the groove is not formed, the thickness T2 of the substrate 100 may be about 300 μm to about 500 μm.

When the thickness T2 of the substrate 100 is less than about 300 μm in the region where the groove is not formed, the strength of the substrate 100 may be reduced, and cracks may occur when forming a sensing electrode on the substrate. In addition, when the thickness T2 of the substrate 100 exceeds about 1000 μm in the region where the groove is not formed, the overall thickness of the touch window may be thickened by the thickness of the substrate 100. have.

The inclined angle of the groove with the other surface of the substrate 100 may decrease from the outer region of the groove to the center region of the groove.

The outer area of the groove and the center area of the groove may be disposed at different inclination angles with respect to the other surface of the substrate 100.

The outer region of the groove may include an inclined surface. The inclined surface may be inclined at an acute angle with the other surface of the substrate 100.

The central area of the groove may comprise a plane and a substantially plane. That is, the center region of the groove may be disposed in parallel or close to parallel to the other surface of the substrate 100. That is, the center region of the groove and the other surface of the substrate 100 may be disposed at angles of 0 degrees to 2 degrees.

The decor layer 400 and the fingerprint sensor 500 may be disposed on the substrate 100. For example, the decor layer 400 may be disposed on the substrate 100, and the fingerprint sensor 500 may be sequentially disposed on the decor layer 400. In detail, the decor layer 400 and the fingerprint sensor 500 may be disposed on one surface of the substrate 100 including the groove.

7 and 8, a first decor layer 410 may be disposed on an outer area OA of a groove of the substrate 100. The second decor layer 420 may be disposed on the inner region IA of the groove of the substrate 100.

Here, the outer area OA of the groove may mean an invalid area UA that does not include the groove. The inner area IA of the groove may mean an invalid area UA including the groove. That is, the outer area OA of the groove may be a planar area, and the inner area IA of the groove may mean a stepped area.

The substrate 100 may include a first region 1A where the first decor layer 410 is disposed, a second region 2A where the second decor layer 420 is disposed, and the first decor layer 410. And a third region 3A in which the second decor layer 420 overlaps.

An area of the first deco layer 410 disposed on the crate 100 may be larger than that of the second deco layer 420.

For example, the first area 1A may correspond to an area that does not include a groove in the invalid area UA. In detail, the first region 1A may correspond to the outer region OA of the groove.

For example, the second area 2A may correspond to an area including a groove in the invalid area UA. In detail, the second area 2A may correspond to the internal area IA of the groove.

The third region 3A may correspond to the first overlapping region. The third region 3A may be disposed between the first region 1A and the second region 2A. The overlapping area of the first area 1A and the second area 2A may be disposed on the outer area OA of the groove or on the inner area IA of the groove.

First, the first area 1A will be described.

The first decor layer 410 may be entirely disposed on the outer area OA of the groove. That is, the first decor layer 410 may be entirely disposed in the remaining areas of the ineffective area UA except for the grooves.

One end 410e extending toward the groove of the first decor layer 410 may be disposed in one of the inner region IA of the groove and the outer region OA of the groove.

For example, one end 410e extending toward the groove of the first decor layer 410 may be disposed on the outer area OA of the groove. In detail, one end 410e extending toward the groove of the first decor layer 410 may be disposed up to the boundary area between the outer area OA and the inner area AA of the groove.

Next, the second area 2A and the third area 3A will be described.

The second decor layer 420 may be entirely disposed on the inner region IA of the groove. That is, the second decor layer 420 may be disposed entirely in the inner region IA of the groove and partially disposed in one region of the outer region OA of the groove.

One end 420a of the second deco layer 420 is partially disposed on the outer area OA of the groove, extends from the inner area IA of the groove, and the second deco layer 420. The other end 420b may be partially disposed on the outer area OA of the groove.

For example, an area of the second decor layer 420 may be larger than an area of the groove. In detail, the second decor layer 420 may be disposed on the substrate 100 with a width greater than that of the groove while covering the groove as a whole.

Accordingly, the first overlapping area may be disposed on the outer area OA of the groove. That is, the third region 3A in which the first decor layer 410 and the second decor layer 420 overlap may be disposed on the outer region OA of the groove.

The first overlapping region, which is the third region 3A, is a region in which a second decor layer 420 is disposed on the first decor layer 410 and a first decor layer on the second decor layer 420. It may be one of the areas where the 410 is disposed.

Referring to FIG. 7, in the first overlapping region, the second decor layer 420 may be disposed on the first decor layer 410.

Accordingly, the second deco layer 420 may be disposed while surrounding the end of the first deco layer 410.

For example, one end 410e extending toward the groove of the first decor layer 410 may be disposed while the second decor layer 420 is wrapped.

Alternatively, referring to FIG. 8, in the first overlapping region, the first decor layer 410 may be disposed on the second decor layer 420.

Accordingly, the first deco layer 410 may be disposed surrounding the end of the second deco layer 420.

For example, one end 420a of the second decor layer 420 and the other end 420b opposite to the one end may be disposed while the first decor layer 410 is wrapped.

One deco layer may be disposed in the first region 1A. In addition, one decor layer may be disposed in the second region 2A. Two decor layers may be disposed in the third region 3A. That is, as the first deco layer 410 disposed on the first region 1A and the second deco layer 420 disposed on the second region 2A overlap, two deco layers are disposed. Can be.

The decor layer 400 is coated with a material having a predetermined color so that the wiring electrode disposed on the ineffective area UA and a printed circuit board connecting the wiring electrode to an external circuit can be hidden from the outside. Can be formed.

The deco layer 400 may have a color suitable for a desired appearance, and may include black or white pigment, for example, including black or white pigment. Alternatively, various colors such as white or black, red, and blue may be implemented using a film or the like.

The first deco layer 410 and the second deco layer 420 may include the same or similar materials. In addition, the first decor layer 410 and the second decor layer 420 may be formed by the same or similar processes. In addition, the first deco layer 410 and the second deco layer 420 may include the same or similar colors.

The first deco layer 410 and the second deco layer 420 may include the same color. For example, the first decor layer 410 and the second decor layer 420 may include the same ink. Accordingly, the first region 1A, the second region 2A, and the third region 3A may have the same color. Accordingly, the sense of unity between the inner region of the groove and the outer region of the groove can be improved.

The deco layer 400 may be formed of a film. Accordingly, when the substrate 100 is flexible or includes a curved surface, the decor layer may be easily disposed on one surface of the substrate 100. In addition, the decoupling of the decor layer 400 may be prevented to improve the reliability of the touch window.

In addition, the deco layer 400 may form a desired logo or the like in various ways. Such a deco layer may be formed by deposition, printing, wet coating, or the like.

The first decor layer 410 and the second decor layer 420 may be arranged in the same or similar thickness.

The decor layer 400 may have a predetermined thickness in the first region 1A, the second region 2A, and the third region 3A. For example, the thickness of the decor layer 400 in the first region 1A, the second region 2A, and the third region 3A may be 1 μm or more. For example, the thickness of the decor layer 400 in the first region 1A, the second region 2A, and the third region 3A may be 1.5 μm or more. For example, the thickness of the decor layer 400 in the first region 1A, the second region 2A, and the third region 3A may be 2 μm or more.

If there is an area in which the thickness of the decor layer 400 is less than 1 μm among the first area 1A, the second area 2A, and the third area 3A, a wiring electrode and / or a printed circuit The substrate can be viewed.

That is, since the thickness of the deco layer on the outer region OA of the groove and the deco layer on the inner region IA of the groove is 1 μm or more, color difference may occur in the deco layer.

In the third region 3A, the thickness T3 of the first overlapping region of the first decor layer 410 and the second decor layer 420 may be 2 μm to 8 μm. For example, the thickness T3 of the first overlapping region of the first decor layer 410 and the second decor layer 420 may be 2 μm to 5 μm. For example, the thickness T3 of the first overlapping region of the first decor layer 410 and the second decor layer 420 may be 3 μm to 4 μm.

When the thickness of the first overlapping region of the first decor layer 410 and the second decor layer 420 is less than 2 μm, the wiring electrode and / or the printed circuit board may be viewed.

When the thickness of the first overlapping region of the first decor layer 410 and the second decor layer 420 is greater than 8 μm, a shadow difference may occur due to a step of the decor layer, and the thickness of the touch window may increase. can do.

The fingerprint sensor 500 may be disposed on the central area of the groove, that is, the planar portion of the substrate 100.

The fingerprint sensor 500 may include at least one fingerprint sensor among ultrasonic, infrared, and capacitive fingerprint sensors classified according to an operating principle. The fingerprint sensor may perform a predetermined function when a touch or the like of an object or the like is recognized on one surface of the touch window.

9 and 10, the first deco layer 410 may be entirely disposed on the outer area OA of the groove. For example, the first decor layer 410 may be disposed entirely in the outer area OA of the groove and partially disposed in one area on the inner area IA of the groove.

One end 410e extending toward the groove of the first decor layer 410 may be disposed on the inner region IA of the groove.

Referring to FIG. 9, the second decor layer 420 may be entirely disposed on the inner region IA of the groove. For example, one end 420a and the other end 420b of the second decor layer 420 may be disposed to a boundary area between the outer area OA of the groove and the inner area AA.

Alternatively, referring to FIG. 10, the second decor layer 420 may be partially disposed in the inner region IA of the groove. For example, one end 420a of the second decor layer 420 is partially disposed on the inclined surface of the inner region IA of the groove, and extends from the planar region of the inner region IA of the groove. The other end 420b of the second decor layer 420 may be partially disposed on the inclined surface of the inner region IA of the groove.

For example, an area of the second decor layer 420 may be smaller than an area of the groove. In detail, the second decor layer 420 may be disposed on the substrate 100 with a width smaller than that of the groove while partially covering the groove.

The first overlapping region may be disposed on the inner region IA of the groove. That is, the third region 3A in which the first decor layer 410 and the second decor layer 420 overlap may be disposed on the inner region OA of the groove.

9, in the first overlapping region, the second decor layer 420 may be disposed on the first decor layer 410.

Alternatively, referring to FIG. 10, in the first overlapping region, the first decor layer 410 may be disposed on the second decor layer 420.

11 and 12, the first deco layer 410 may be partially disposed on the outer area OA of the groove. For example, one end 410e extending toward the groove of the first decor layer 410 may be disposed on the outer area OA of the groove.

That is, the first area 1A in which the first decor layer 410 is disposed may be a smaller area than the area excluding the inner area of the groove in the ineffective area UA.

The second decor layer 420 may be entirely disposed on the inner region IA of the groove. That is, the second decor layer 420 may be disposed on the entire inner region IA of the groove and partially disposed on one region of the outer region OA of the groove.

One end 420a of the second deco layer 420 is partially disposed in the outer region OA of the groove, extends from the inner region IA of the groove, and the second deco layer 420. The other end of the 420b may be partially disposed in the outer area OA of the groove.

Referring to FIG. 11, in the first overlapping region, the second decor layer 420 may be disposed on the first decor layer 410.

Alternatively, referring to FIG. 12, in the first overlapping region, the first decor layer 410 may be disposed on the second decor layer 420.

13 and 14, the first deco layer 410 may be disposed on the entire outer area OA of the groove and partially disposed on the inner area IA of the groove. For example, one end 410e extending toward the groove of the first decor layer 410 may be disposed on the inner region IA of the groove. In detail, one end 410e of the first decor layer 410 may be disposed extending to an inclined surface on the inner region IA of the groove.

The second decor layer 420 may be entirely disposed on the inner region IA of the groove, and partially disposed on one region of the outer region OA of the groove.

Accordingly, the first overlapping region may be disposed over the outer region OA of the groove and the inner region IA of the groove. That is, the third region 3A in which the first decor layer 410 and the second decor layer 420 overlap each other may be disposed on the outer region OA of the groove and the inner region IA of the groove. Can be.

Referring to FIG. 13, in the first overlapping region, the second decor layer 420 may be disposed on the first decor layer 410.

Accordingly, the second decor layer 420 may be disposed while surrounding the end of the first decor layer 410 disposed in the inner region IA of the groove.

Alternatively, referring to FIG. 14, in the first overlapping region, the first decor layer 410 may be disposed on the second decor layer 420.

Accordingly, the first deco layer 410 may be disposed while surrounding the end of the second deco layer 420 disposed on the outer area OA of the groove.

The embodiment may include a first overlapping region in at least one of an outer region of the groove and an inner region of the groove. That is, the first decor layer and the second decor layer may include a first overlapping region overlapping each other in at least one of the outer region of the groove and the inner region of the groove.

Alternatively, the embodiment may include a first overlapping region in at least one of an outer region of the groove and an inner region of the groove, and include a second overlapping region in the inner region of the groove. That is, a first overlapping region where the first decor layer and the second decor layer overlap each other in at least one of the outer region of the groove and the inner region of the groove, and the first sub-second decor layer and the first sub-layer in the inner region of the groove. The second sub-second decoration layer may include a second overlapping region overlapping each other.

Alternatively, the embodiment may include a second overlapping region in the inner region of the groove. That is, the first sub-second decoration layer and the second sub-second decoration layer may include a second overlapping region overlapping each other in the inner region of the groove.

Referring to FIG. 15, a plurality of overlapping regions may be included. For example, the first decor layer 410 and the second decor layer 420 may include a third region 3A overlapping each other. The first decor layer 410 may be disposed on the second decor layer 420 in the third region 3A. Accordingly, the first deco layer 410 may be disposed surrounding the end of the second deco layer 420.

Alternatively, referring to FIG. 16, only an inner region of the groove may include an overlapping region. For example, the first deco layer 410 and the second deco layer 420 may be disposed at heights corresponding to each other. One end of the first deco layer 410 may be in contact with one end of the second deco layer 420.

15 and 16, the second decor layer 420 may include a first sub second decor layer 421 and a second sub second decor layer 422. The width of the first sub second decor layer 421 may be smaller than the width of the groove. The width of the second sub second decor layer 422 may be smaller than the width of the groove.

The sum of the width of the first sub second deco layer 421 and the width of the second sub second deco layer 422 may be greater than the width of the groove.

One end of the first sub second deco layer 421 is disposed on the outer area OA of the groove, and the other end of the first sub second deco layer 421 is disposed on the inner area IA of the groove. Can be placed in. For example, one end of the first sub second deco layer 421 is disposed on a planar area of the outer area OA of the groove, and the other end of the first sub second deco layer 421 is the groove. It may be arranged on a plane or a substantial plane which is the central area of the internal area IA of the. One end of the second sub second deco layer 422 is disposed on the outer region OA of the groove, and the other end of the second sub second deco layer 422 is disposed on the inner region IA of the groove. Can be placed in. For example, one end of the second sub second deco layer 422 is disposed in a planar area on the outer area OA of the groove, and the other end of the second sub second deco layer 422 is formed of the groove. It may be arranged in a plane or substantial plane which is a central area on the interior area IA.

The first sub second deco layer 421 and the second sub second deco layer 422 may include a second overlapping region disposed to overlap each other. The substrate 100 may further include a fourth region 4A in which the first sub second deco layer 421 and the second sub second deco layer 422 overlap each other.

The second overlapping region may be disposed on the inner region IA of the groove. That is, the fourth region 4A may be disposed on the inner region IA of the groove. For example, the fourth region 4A may be disposed in a plane or substantially planar portion which is the central region of the inner region IA of the groove. However, the embodiment is not limited thereto, and the fourth region 4A may be disposed on an inclined surface that is an outer region of the inner region IA of the groove.

The second sub second decor layer 422 may be disposed on the first sub second decor layer 421. The second sub second decor layer 422 may be disposed to surround one end of the first sub second decor layer 421.

The thickness of the first overlapped region may correspond to the thickness of the second overlapped region.

In the fourth region 4A, the thickness T3 of the second overlapping region of the first sub second deco layer 421 and the second sub second deco layer 422 may be 2 μm to 8 μm. have. For example, the thickness T3 of the second overlapping region of the first sub second deco layer 421 and the second sub second deco layer 422 may be 2 μm to 5 μm. For example, the thickness T3 of the second overlapping region of the first sub second deco layer 421 and the second sub second deco layer 422 may be 3 μm to 4 μm.

When the thickness T3 of the second overlapping region of the first sub second deco layer 421 and the second sub second deco layer 422 is less than 2 μm, the wiring electrode and / or the printed circuit board may be viewed. Can be.

When the thickness T3 of the second overlapping region of the first sub second deco layer 421 and the second sub second deco layer 422 is greater than 8 μm, there is a difference in shadow due to the step of the deco layer. The sensing distance of the fingerprint sensor can be increased.

As the second decor layer 420 includes a plurality of sub second decor layers, the design of the groove may be varied.

Further, by arranging the sub second deco layers suitable for the grooves having various inclined surfaces, the second deco layers can be arranged to have a thickness of 1 µm or more. Thereby, the visibility of a touch window can be improved.

For example, the first sub second deco layer 421 and the second sub second deco layer 422 may include different inks. Accordingly, the area in which the fingerprint sensor is disposed may be arranged to have a pattern including different colors. Accordingly, the convenience of the design of the touch window can be improved.

The plurality of different second decor layers 420 may include one or more second overlapping regions in the inner region IA of the groove. Although not shown, the third sub-second decor layer may be further included. For example, the first sub-second decoration layer and the second sub-second decoration layer may be disposed in an area corresponding to the inclined surface of the groove, and the third sub-second decoration layer corresponds to the plane of the groove. May be placed in the area.

One end of the first sub second deco layer and the second sub second deco layer is disposed on an outer region OA of the groove, and the first sub second deco layer and the second sub second deco layer. The other end of may be disposed in the inner region IA of the groove. In addition, one end and the other end of the third sub-second decoration layer may be disposed in the inner region IA of the groove.

That is, a second overlapping region of the first sub-second deco layer and the third sub-second deco layer and a second sub-second deco layer and the third sub-second deco layer in the inner region of the groove. It may include overlapping regions. Thereby, the step of a deco layer can be formed smoothly.

That is, the touch window according to the embodiment may prevent the visibility deterioration due to the step that may occur when the decor layer is integrally formed on the inner region of the groove and the outer region of the groove. The embodiment may include a first overlapping region and a second overlapping region, thereby improving the placement efficiency of the decor layer.

In addition, by disposing separate decor layers on the first area 1A and the second area 2A, the problem of poor arrangement or uneven placement of the decor layers that may occur on the inclined surface of the groove can be solved. have.

Hereinafter, a fingerprint sensor cover and a method of manufacturing a touch window including the same will be described.

17 to 19 relate to a manufacturing process of the fingerprint sensor cover according to FIG. 7.

First, referring to FIG. 17, a substrate 100 including a groove H may be prepared.

Next, a decoration layer may be disposed in one of the inner region IA of the groove H and the outer region OA of the groove H.

Referring to FIG. 18, the first decor layer 410 may be disposed on the outer area OA of the groove H. In detail, the first decor layer 410 may be entirely disposed on the outer area OA of the groove H.

For example, disposing the first decor layer 410 in the outer area OA of the groove may include any one of flat printing, spray printing, screen printing, pad printing, and film attachment. .

Next, the method may include disposing the deco layer in one region where the deco layer is disposed and the other region.

Referring to FIG. 19, the second decor layer 420 may be disposed in the inner region IA of the groove H.

For example, disposing the second decor layer 420 in the inner region IA of the groove may include pad printing. The pad printing may improve the printing quality on the stepped portion including the inclined surface as well as the flat surface.

The pad printing may proceed to an area larger than the groove H while covering the groove H as a whole. Accordingly, one region where the deco layer is disposed and the other region where the deco layer is disposed may include overlapping regions. That is, a first overlapping region of the first decor layer 410 and the second decor layer 420 may be formed. The first overlapping region may be disposed on at least one of an inner region of the groove and an outer region of the groove with respect to the boundary portion of the groove.

After the first decor layer 410 is disposed, the second decor layer 420 may be disposed. Therefore, in the first overlapping region, the second decor layer 420 may be disposed on the first decor layer 410.

On the other hand, Figures 20 to 22 relates to the manufacturing process of the fingerprint sensor cover according to FIG.

First, referring to FIG. 20, the substrate 100 including the grooves H may be prepared.

Referring to FIG. 21, the second decor layer 420 may be partially disposed on an inner region IA of the groove H and an outer region OA of the groove H. For example, disposing the decor layer in the inner area IA of the groove may include pad printing. The pad printing may proceed to an area larger than the groove H while covering the groove H as a whole.

Next, referring to FIG. 22, the first deco layer 410 may be disposed in the outer area OA of the groove H.

For example, disposing the decor layer in the outer area OA of the groove may include any one of flat printing, spray printing, screen printing, pad printing, and film attachment.

One region where the deco layer is disposed and the other region where the deco layer is disposed may include an overlapping region. The first overlapping region may be disposed on one of an inner region of the groove and an outer region of the groove with respect to the boundary portion of the groove.

After the second decor layer 420 is disposed, the first decor layer 410 may be disposed. Therefore, in the first overlapping region, the first decor layer 410 may be disposed on the second decor layer 420.

That is, in the method of manufacturing the touch window according to the embodiment, the decor layer may be disposed in a separate process on an area having a step and an area having no step.

That is, in the region including the groove and the region not including the groove, as the decor layer is disposed in a separate process, thickness variation of the decor layer may be reduced. Thereby, the fall of visibility due to the thickness variation of a decor layer can be prevented.

In addition, the manufacturing method of the touch window according to the embodiment, it is possible to prevent the non-uniform arrangement of the decor layer that may occur when the decor layer is formed in the same manner as the spray injection on the entire surface of the ineffective area. That is, as the decor layer forming material flows down from the inclined surface of the groove, it can be prevented from being unevenly disposed on the cover substrate.

According to the embodiment, as the second decor layer is formed on the groove by a separate arrangement process such as pad printing, the decor layer may be disposed with a uniform thickness regardless of the shape of the groove.

Referring to FIG. 1, the sensing electrode 200 may be disposed on the substrate 100. For example, the sensing electrode 200 may be disposed on the effective area AA 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 may extend in different directions and may be disposed on the substrate 100.

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

In addition, the second sensing electrode 220 may be disposed on one surface of the substrate 100 while extending in a direction different from the one direction on the effective area AA of the substrate 100. That is, the first sensing electrode 210 and the second sensing electrode 220 may be disposed to 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. In detail, the plurality of first unit sensing electrodes constituting the first sensing electrode 210 are connected to each other, and the plurality of second unit sensing electrodes constituting the second sensing electrode 220 are spaced apart from each other. Can be. The second unit sensing electrodes are connected by the bridge electrode 230, and the insulating material 250 is disposed on the portion where the bridge electrode 203 is disposed, so that the first sensing electrode 210 and the second sensing are detected. The electrodes 220 may short circuit each other.

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

At least one sensing electrode 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. The electrode may be a metal such as indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, titanium oxide, or the like. Oxides. Accordingly, since the transparent material is disposed on the sensing effective region, the degree of freedom in forming the pattern of the sensing electrode may be improved.

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

In the case of using a nano composite such as nano wire or carbon nanotube (CNT), it may be composed of black, and has the advantage of controlling color and reflectance while securing electric conductivity through controlling the content of nano powder. Accordingly, when manufacturing a touch window in which the flexible and / or the bending is implemented, the degree of freedom may be improved.

Alternatively, at least one sensing electrode of the first sensing electrode 210 and the second sensing electrode 220 may include various metals. For example, the sensing electrode 200 is chromium (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), molybdenum (Mo). Gold (Au), titanium (Ti) and their alloys may include at least one metal.

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

Since the sensing electrode has a mesh shape, the pattern of the sensing electrode may not be visible on the effective area AA. That is, even if the sensing electrode is made of metal, the pattern can be made invisible. In addition, even when the sensing electrode is applied to a large size touch window, the resistance of the touch window may be lowered. In addition, the sensing electrode and the wiring electrode may be simultaneously patterned with the same material.

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 area AA and the invalid area 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 310 and the second wiring electrode 320 are disposed on the ineffective area UA of the substrate 100, and the first wiring electrode 310 and the second wiring electrode ( One end of the 320 may be connected to the first sensing electrode 210 and the second sensing electrode 220, and the other end may be connected to the circuit board. Various types of circuit boards may be applied to the circuit board. For example, a flexible printed circuit board (FPCB) may 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 a material corresponding to or similar to that of the sensing electrode 200 described above.

A deco layer 400 may be disposed on the ineffective area UA of the substrate 100. The decor layer 400 is coated with a material having a predetermined color so that the wiring electrode disposed on the ineffective area UA and a printed circuit board connecting the wiring electrode to an external circuit can be hidden from the outside. Can be formed.

23 and 24 illustrate manufacturing steps of the fingerprint sensing device of FIG. 16. Hereinafter, with reference to FIG. 23 and FIG. 24, the formation process of a 1st deco layer and a 2nd deco layer is demonstrated.

Referring to FIG. 23, a first decor layer 410 may be formed on one surface 100a of the substrate 100. In detail, the first decor layer 410 may be formed on one surface 100a of the substrate except for a region where the groove H is formed.

For example, the first decor layer 410 may be formed by screen printing a black or white pigment or the like, or may be formed by adhering a color film having various colors.

Referring to FIG. 24, a second decor layer may be formed on the groove H. The second deco layer may be formed through two steps.

For example, after arranging the printing pad portion P in one end of the groove, the black or white pigment is transferred to the printing pad portion P, and then the printing pad portion P is pressed onto the substrate. One sub-second deco layer 421 may be formed.

In this case, the first sub second deco layer 421 may be formed to be connected to the first deco layer 410. In addition, the first sub-second decoration layer 421 may be formed to partially overlap the first decoration layer 410. Accordingly, the first overlapping region where the first sub-second decor layer 421 and the first decor layer 410 overlap may have a larger thickness of the decor layer than other regions.

Subsequently, after arranging the printing pad portion P in the other end region of the groove, that is, the other end region facing the one end, the black or white pigment is transferred to the printing pad portion P, and then the printing pad portion ( P) may be pressed onto the substrate to form a second sub-second decor layer 422.

In this case, the second sub second deco layer 422 may be formed to be connected to the first deco layer 410. In addition, the second sub second deco layer 422 may be formed to partially overlap the first deco layer 410. Accordingly, the first overlapping region where the second sub-second decor layer 422 and the first decor layer 410 overlap may have a larger thickness of the decor layer than other regions.

In addition, the second sub-second decoration layer 422 may be disposed to be connected to the first sub-second decoration layer 421. In addition, the second sub-second deco layer 422 may be formed to partially overlap the first sub-second deco layer 421. Accordingly, the thickness of the deco layer may be larger than that of the other regions in the second overlapping region where the first sub second deco layer 421 and the second sub second deco layer 422 overlap.

As described above, the touch window according to the embodiment may form an inclined surface having a predetermined inclination angle or a predetermined curvature on the inner surface or the corner area of the groove in which the decor layer and the fingerprint sensor are disposed.

Hereinafter, a touch window according to another exemplary embodiment will be described with reference to FIGS. 25 and 26. In the description of the touch window according to another embodiment, the description of the same or similar components as those of the touch window described above will be omitted, and the same reference numerals will be given to the same components.

25 and 26, a touch window according to another embodiment includes a substrate 100 including an effective area and an invalid area, and the invalid area UA includes a fingerprint sensing area FA. can do.

A groove H may be formed in the substrate 100 on which the fingerprint sensing area FA is formed.

An edge of the groove H may include a curved surface. That is, the groove H may include a first corner E1, a second corner E2, a third corner E3, and a fourth corner E4, and the first corner E1 and the At least one edge of the second edge E2, the third edge E3, and the fourth edge E4 may include a curved surface.

The first corner E1, the second corner E2, the third corner E3, and the fourth corner E4 may have a constant curvature.

For example, an edge of a boundary between an inner region of the groove and an outer region of the groove may have a rounded rectangular shape, and the edge may include first to fourth corners having curvatures. The radius of curvature of the first corner E1, the second corner E2, the third corner E3, and the fourth corner E4 may be about 2 R (mm) or more. However, the embodiment is not limited thereto, and the edges of the inner region of the groove and the boundary of the outer region of the groove may have a rounded circular shape.

When the radius of curvature of the first corner E1, the second corner E2, the third corner E3, and the fourth corner E4 is less than about 2 R (mm), the placement of the decor layer is poor. May occur. In detail, when the decor layer is formed inside the groove H, the decor layer may not be printed with a uniform thickness in the corner region due to the inclination angle, or a pinhole may be generated to allow the fingerprint sensor inside the groove to be recognized from the outside. have.

27 and 28, a touch window according to another embodiment may include a substrate 100 including an effective area and an invalid area, and the invalid area UA may include a fingerprint sensing area FA. It may include.

Grooves may be formed in the substrate 100 where the fingerprint sensing area FA is formed.

Referring to FIG. 27, an edge of the groove H may include a curved surface. That is, the groove H may include a first corner E1, a second corner E2, a third corner E3, and a fourth corner E4, and the first corner E1 and the At least one edge of the second edge E2, the third edge E3, and the fourth edge E4 may include a curved surface.

Referring to FIG. 28, the first connection surface C1, the second connection surface C2, the third connection surface C3, and the fourth connection surface C4 may include curved surfaces.

Since the first connection surface C1, the second connection surface C2, the third connection surface C3, and the fourth connection surface C4 are similar to those described above, the following description is omitted.

Referring to FIG. 29, another type of touch window includes a substrate 100 and a first substrate 110, and includes a first sensing electrode 210 on the substrate 100 and a second sensing on the substrate 110. It may include an electrode 220.

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 substrate 100, and the first substrate ( A second sensing electrode 220 extending in a direction different from the one direction and a second wiring electrode 320 connected to the second sensing electrode 220 may be disposed on one surface of the 110.

Alternatively, the sensing electrode may not be disposed on the substrate 100, and the sensing electrode may be disposed only on both surfaces of the first substrate 110.

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 one direction and a second wiring electrode 320 connected to the second sensing electrode 220 may be disposed on the other surface of the substrate 110.

Referring to FIG. 30, a touch window according to another type includes a substrate 100, a first substrate 110, and a second substrate 120, and includes a first sensing electrode on the first substrate 110 and the first sensing electrode on the first substrate 110. The second sensing electrode on the second substrate 120 may be included.

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 one 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. 31, a touch window according to another type may include a substrate 100, a first sensing electrode 210, and a second sensing electrode 220 on the substrate.

The first sensing electrode 210 and the second sensing electrode 220 may be disposed on the same surface 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.

In addition, 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 may be included, and the first wiring electrode ( 310 may be disposed on the effective area and the invalid area of the substrate 100, and the second wiring electrode 320 may be disposed on the invalid area of the substrate 100.

The touch window described above may 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. 32, the touch device according to the embodiment may include a touch window disposed on the display panel 700.

In detail, referring to FIG. 32, the touch device may be formed by combining the substrate 100 and the display panel 700. The substrate 100 and the display panel 700 may be adhered to each other through an adhesive layer 600. For example, the substrate 100 and the display panel 700 may be laminated to each other through an adhesive layer 600 including optically clear adhesives OCA and OCR.

The display panel 700 may include a first 'substrate 710 and a second' substrate 720.

When the display panel 700 is a liquid crystal display panel, the display panel 700 includes a first substrate 710 including a thin film transistor (TFT) and a pixel electrode, and a second filter including color filter layers. The substrate 720 may be formed in a bonded structure with the liquid crystal layer interposed therebetween.

In addition, the display panel 700 includes a thin film transistor, a color filter, and a black matrix formed on the first 'substrate 710, and the second' substrate 720 has the liquid crystal layer interposed therebetween. ) May be a liquid crystal display panel having a color filter on transistor (COT) structure. That is, a thin film transistor may be formed on the first 'substrate 710, 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 in contact with the thin film transistor is formed on the first 'substrate 710. In this case, the black matrix may be omitted in order to improve the aperture ratio and simplify the mask process, and the common electrode may be formed to serve as the black matrix.

In addition, when the display panel 700 is a liquid crystal display panel, the display device may further include a backlight unit that provides light from the back of the display panel 700.

When the display panel 700 is an organic light emitting display panel, the display panel 700 includes a self-light emitting device that does not require a separate light source. In the display panel 700, a thin film transistor is formed on the first ′ substrate 710, and an organic light emitting diode is formed in contact with the thin film transistor. The organic light emitting diode may include an anode, a cathode, and an organic light emitting layer formed between the anode and the cathode. In addition, the organic light emitting device may further include a second 'substrate 720 serving as an encapsulation substrate for encapsulation.

Referring to FIG. 33, the touch device according to the embodiment may include a touch window integrally formed with the display panel 700. 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 700. That is, at least one sensing electrode may be formed on at least one surface of the first 'substrate 710 or the second' substrate 720.

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

The first sensing electrode 210 may be disposed on one surface of the substrate 100. In addition, a first wire connected to the first sensing electrode 210 may be disposed. In addition, a second sensing electrode 220 may be disposed on one surface of the display panel 700. In addition, a second wiring connected to the second sensing electrode 220 may be disposed.

An adhesive layer 600 may be disposed between the substrate 100 and the display panel 700 so that the substrate and the display panel 700 are laminated to each other.

In addition, a polarizer may be further included below the substrate 100. The polarizing plate may be a linear polarizing plate or an external light reflection preventing polarizing plate. For example, when the display panel 700 is a liquid crystal display panel, the polarizer may be a linear polarizer. In addition, when the display panel 700 is an organic light emitting display panel, the polarizing plate may be an anti-reflective polarizing plate.

The touch device according to the embodiment may omit at least one substrate supporting the sensing electrode. For this reason, a thin and light touch device can be formed.

Referring to FIG. 34, the touch device according to the embodiment may include a touch window integrally formed with the display panel 700. That is, the substrate supporting at least one sensing electrode may be omitted.

For example, a sensing electrode disposed in an effective area and serving as a sensor for sensing a touch and a wiring for applying an electrical signal to the sensing electrode may be formed inside 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 710 and a second' substrate 720. In this case, at least one sensing electrode of the first sensing electrode 210 and the second sensing electrode 220 is disposed between the first 'substrate 710 and the second' substrate 720. That is, at least one sensing electrode may be disposed on at least one surface of the first 'substrate 710 or the second' substrate 720.

Referring to FIG. 34, a first sensing electrode 210 may be disposed on one surface of the substrate 100. In addition, a first wire connected to the first sensing electrode 210 may be disposed. In addition, a second sensing electrode 220 and a second wiring may be formed between the first 'substrate 710 and the second' substrate 720. 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 an upper surface of the first 'substrate 710 or a rear surface of the second' substrate 720.

In addition, a polarizer may be further included below the substrate 100.

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 710, the sensing electrode may be formed with a thin film transistor (TFT) or a pixel electrode. have. In addition, when the second sensing electrode is formed on the back surface of the second substrate 720, 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 top surface of the first 'substrate 710, the second sensing electrode may be formed together with the thin film transistor or the organic light emitting diode. .

The touch device according to the embodiment may omit at least one substrate supporting the sensing electrode. For this reason, a thin and light touch device can be formed. In addition, the sensing electrode and the wiring are formed together with the elements formed on the display panel to simplify the process and reduce the cost.

Hereinafter, an example of the display apparatus to which the touch window according to the above-described embodiments is applied will be described with reference to FIGS. 35 to 38.

Referring to FIG. 35, a mobile terminal is illustrated as an example of a touch device apparatus. The mobile terminal may include an effective area AA and an invalid area UA. The effective area AA detects a touch signal by a touch such as a finger, and the invalid area UA turns on / off or sleeps the power of the electronic device by a touch of a finger in a groove part where a fingerprint sensor is inserted. ) You can perform certain functions such as canceling the mode.

Referring to FIG. 36, the touch window may be applied to automobile navigation as well as a touch device device such as a mobile terminal.

Referring to FIG. 37, the touch window may include a flexible touch window that is bent. Therefore, the touch device device including the same may be a flexible touch device device. Thus, the user can bend or bend by hand. The flexible touch window may be applied to a wearable touch or the like.

In addition, referring to FIG. 38, the touch window may be applied to a vehicle. That is, the touch window may be applied to various parts to which the touch window may be applied in the vehicle. Therefore, not only a personal navigation display (PND) but also a dashboard may be used to implement a center information display (CID). However, embodiments are not limited thereto, and the touch device apparatus may be used in various electronic products.

Features, structures, effects, and the like described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. In addition, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified with respect to other embodiments by those skilled in the art to which the embodiments belong. Therefore, contents related to such combinations and modifications should be construed as being included in the scope of the present invention.

In addition, the above description has been made with reference to the embodiments, which are merely examples and are not intended to limit the present invention, and those skilled in the art to which the present invention pertains may be illustrated as above without departing from the essential characteristics of the present embodiments. It will be appreciated that various modifications and applications are possible. For example, each component specifically shown in the embodiments may be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

Claims

A substrate comprising an effective area and an invalid area;

A groove formed for placement of a fingerprint sensor on the invalid area; And

A deco layer disposed on said ineffective region of said substrate,

The deco layer includes a first deco layer disposed on an outer region of the groove and a second deco layer disposed on an inner region of the groove,

The groove is,

A lower surface and an inner surface connecting the lower surface and one surface of the substrate,

The inner region of the groove includes a region where the lower surface and the inner surface is formed,

The inner surface of the fingerprint sensor cover is formed inclined with respect to the lower surface.
The method of claim 1,

The first sensor layer and the second decor layer has a fingerprint sensor cover comprising the same color.
The method of claim 1,

An inner angle formed by the inner surface and the lower surface is an obtuse angle fingerprint sensor cover.
The method of claim 3, wherein

An inner angle formed by the inner surface and the lower surface of the fingerprint sensor cover is 125 to 145 degrees.
The method of claim 3, wherein

A lower connection surface connecting the inner surface and the lower surface; And

An upper connection surface connecting the inner surface and one surface of the substrate,

The upper connection surface and the lower connection surface has a curvature fingerprint sensor cover.
The method of claim 5,

The lower connection surface is formed with a first radius of curvature,

The upper connection surface is formed with a second radius of curvature,

And the first radius of curvature and the second radius of curvature have different sizes.
The method of claim 6,

The first radius of curvature is larger than the second radius of curvature fingerprint sensor cover.
The method of claim 6,

The first radius of curvature is 0.55 R (mm) or less,

The second curvature radius is 0.04R (mm) or less fingerprint sensor cover.
The method of claim 1,

An edge of the boundary between the inner region of the groove and the outer region of the groove has a rounded rectangular shape,

The edge is a fingerprint sensor cover comprising a first corner to a fourth corner having a curvature.
The method of claim 9,

The radius of curvature of the first corner, the second corner, the third corner and the fourth corner is at least 2R (mm) cover.