KR20170087010A - Fingure sensor cover and fingure sensor application - Google Patents

Abstract

A fingerprint sensor cover according to an embodiment includes a glass plate including a display area and a fingerprint sensing area, the glass plate having one surface including a groove formed in the fingerprint sensing area; An opposite surface to the one surface; And a reinforcing layer formed on the one surface and the other surface, wherein the other surface includes a protrusion formed in a region of the other surface corresponding to the fingerprint sensing region, wherein on the one surface, the reinforcing layer on the fingerprint sensing region The compressive stress is smaller than the compressive stress of the reinforcing layer on the area other than the fingerprint sensing area.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a fingerprint sensor cover,

Embodiments relate to a fingerprint sensor cover and a fingerprint sensor device.

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

When such a fingerprint sensor is applied to a touch window, a fingerprint sensor may be disposed on one side of the fingerprint sensor cover.

However, there is a problem that the overall thickness of the fingerprint sensor cover is lowered due to the arrangement of the fingerprint sensor.

In order to solve such a problem, a receiving portion is formed in one area of the fingerprint sensor cover, and a fingerprint sensor can be inserted into the receiving portion.

However, the thickness of the fingerprint sensor cover is reduced in the receiving area, and thus the strength of the fingerprint sensor cover is lowered.

In addition, there is a problem that when the warp occurs due to the reduction in the thickness of the receiving portion region, particularly when the warp amount is large.

Therefore, a fingerprint sensor cover including a fingerprint sensor of a new structure that can solve such a problem is required.

Embodiments provide a fingerprint sensor cover having improved strength and visibility and a door sensor device including the same.

A fingerprint sensor cover according to an embodiment includes a glass plate including a display area and a fingerprint sensing area, the glass plate having one surface including a groove formed in the fingerprint sensing area; An opposite surface to the one surface; And a reinforcing layer formed on the one surface and the other surface, wherein the other surface includes a protrusion formed in a region of the other surface corresponding to the fingerprint sensing region, wherein on the one surface, the reinforcing layer on the fingerprint sensing region The compressive stress is smaller than the compressive stress of the reinforcing layer on the area other than the fingerprint sensing area.

The fingerprint sensor cover according to the embodiment may have a reinforcing layer formed on the outer surface of the fingerprint sensor cover to complement the strength of the fingerprint sensor cover.

Accordingly, the strength of the fingerprint sensor cover due to the formation of the groove formed in the fingerprint sensor cover, that is, the receiving groove in which the fingerprint sensor is accommodated, can be reduced.

Particularly, according to the fingerprint sensor cover according to the embodiment, by controlling the thickness of the reinforcing layer and the compressive stress according to each region, it is possible to prevent the strength of the fingerprint sensor cover from lowering, The occurrence of warpage of the fingerprint sensor cover can be mitigated and the visibility can be improved.

Therefore, the fingerprint sensor cover according to the embodiment can have improved reliability.

1 and 2 are top views of a fingerprint sensor cover according to an embodiment.
FIGS. 3 and 4 are views showing a cross-sectional view taken along the line AA 'in FIG.
Figs. 5 to 8 are views showing various enlarged views of the area B in Fig.
9 to 12 are views showing various cross-sectional views of a fingerprint sensing device according to an embodiment.
13 to 15 are views for explaining various types of touch windows.
16 to 18 are views showing a touch device in which a touch window and a display panel are combined according to an embodiment.
19 is a view showing an example of a touch device device to which a touch device according to the embodiment is applied.

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

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

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

Hereinafter, a fingerprint sensor cover according to an embodiment will be described with reference to the drawings.

Referring to FIG. 1, the fingerprint sensor cover according to the embodiment may include a glass plate 100.

The glass plate 100 may be rigid or flexible.

For example, the glass plate 100 may include at least one of silicon oxide, aluminum oxide, and sodium oxide. For example, the glass plate 100 may include chemically reinforced / semi-tempered glass such as soda lime glass or aluminosilicate glass.

In addition, the glass plate 100 may be curved with a partially curved surface. That is, the glass sheet 100 may have a flat surface partially, and may have a curved surface partially. In detail, the end of the glass plate 100 may be curved with a curved surface, or may have a surface including a random curvature, and may be bent or bent.

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

In addition, the glass plate 100 may be a curved or a bended glass plate. That is, the fingerprint sensor cover including the glass plate 100 may be formed to have a flexible, curved, or bent characteristic. Therefore, the fingerprint sensor cover according to the embodiment is easy to carry and can be changed into various designs.

Referring to FIG. 2, a valid region AA and a non-valid region UA may be defined in the glass plate 100.

The non-valid area UA may be disposed to surround the valid area AA. The area of the effective area AA may be larger than the area of the non-valid area UA.

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

That is, the valid area AA may be a display area in which a display is displayed.

For example, a plurality of sensing electrodes may be disposed on the effective area AA. In detail, the first sensing electrode and the second sensing electrode may extend in different directions on the effective area AA. The first sensing electrode and the second sensing electrode may extend in different directions without being in contact with each other.

In addition, a plurality of wiring electrodes may be disposed on the non-effective region UA. In detail, a first wiring electrode connected to the first sensing electrode and a second wiring electrode connected to the second sensing electrode may be disposed on the non-effective region UA.

In addition, the position of the input device (e.g., a finger or a stylus pen) can be sensed in at least one of the effective area AA and the non-valid area UA. In detail, when an input device such as a finger is brought into contact with the glass plate 100, a capacitance difference occurs at a portion where the input device is contacted, and a portion where such a difference occurs can be detected as the contact position.

The glass plate 100 may include a fingerprint sensing area FA. The area of the fingerprint sensing area FA may be smaller than the area of the non-effective area UA. The position of the fingerprint sensing area FA may overlap the position of the non-valid area UA. In detail, the fingerprint sensing area FA may be located on the ineffective area UA.

The fingerprint sensing area FA may be an area for recognizing a fingerprint of a finger or the like.

Also, the glass plate 100 may have 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.

The area of the fingerprint sensing area FA may be smaller than the area of the glass plate 100. In detail, the area of the fingerprint sensing area FA may be about 0.5% to about 5% of the total area of the glass plate.

3, the glass plate 100 may include a first surface 100a, a second surface 100b opposite to the first surface, and a side surface 100c connecting the first surface 100a and the second surface 100b. have.

The thickness T of the glass plate 100 may be about 1000 탆 or less. The thickness T of the glass plate 100 may be defined as a distance from one surface 100a of the glass plate 100 to the other surface 100b of the glass plate 100 and may be about 1000 탆 or less . The other surface 100b may be a surface on which the input device, such as a finger or the like, is in contact, and the thickness T of the glass plate 100 may be in a range of about 300 탆 to about 1000 탆. ) May be a surface on which the fingerprint sensor is disposed.

As shown in FIG. 3, the one surface 100a and the other surface 100b may be formed in a straight line.

Alternatively, as shown in FIG. 4, the one surface 100a and the other surface 100b may be curved. For example, the one surface 100a and the other surface 100b may be formed to be bent in the same direction as the direction in which the protrusions formed on the other surface are bent.

The fingerprint sensing area FA may be defined on one surface 100a of the glass plate.

The one surface 100a of the glass plate 100 may include a groove H. In detail, the one surface 100a includes the groove H formed at a position corresponding to the fingerprint sensing area FA can do. That is, the groove H may be formed in the fingerprint sensing area FA of the one surface 100a.

The groove (H) may be a receiving portion. In detail, the groove H may be a receiving groove for receiving the fingerprint sensor.

The groove H may be formed to a depth of about 30% to about 60% of the thickness T of the glass plate 100 on which the groove is not formed. If the depth D of the groove is less than about 30% of the thickness of the glass plate 100, it can not be formed to a depth sufficient to accommodate the fingerprint sensor. Further, the distance between the other surface contacting the input device such as a finger and the fingerprint sensor disposed in the groove is distant, and the sensitivity of the fingerprint recognition due to the touch of the input device may be reduced.

When the depth D of the groove is greater than about 60% of the thickness of the glass plate 100, the strength of the glass plate may be decreased due to the depth of the groove.

One side 100a of the glass plate may include a lower surface H1 and an inclined surface H2 formed by the grooves H by the grooves H. [ The lower surface (H1), the inclined surface (H2), and one surface of the glass plate on which the groove is not formed may be connected to each other. One surface of the lower surface H1, the inclined surface H2, and the glass plate on which the groove is not formed may be integrally formed. One surface of the lower surface H1 and the glass plate on which the grooves are not formed may be connected to each other by the inclined surface H2.

The interface between the lower surface H1, the inclined surface H2, and one surface 100a other than the groove region may be formed in various shapes.

For example, as shown in FIG. 5, the boundary between the lower surface H1 and the inclined surface H2 is formed as a curved surface, and the boundary between the inclined surface H2 and one surface of the glass sheet may be curved have.

6, the boundary between the lower surface H1 and the inclined surface H2 is formed as a curved surface, and the boundary between the inclined surface H2 and one surface of the glass plate may be formed with an angle .

Alternatively, as shown in FIG. 7, the boundary between the lower surface H1 and the inclined surface H2 is formed with an angle, and the boundary between the inclined surface H2 and one surface of the glass sheet may be curved.

8, the boundary between the lower surface H1 and the inclined surface H2 is formed to have an angle, and the boundary between the inclined surface H2 and one surface of the glass plate may be formed to have an angle .

The thickness t1 of the glass plate 100 in the area corresponding to the fingerprint sensing area FA may be about 200 袖 m to about 300 袖 m. If the thickness t1 of the glass plate 100 in the area corresponding to the fingerprint sensing area FA is less than about 200 μm, the strength of the glass plate may be reduced.

When the thickness t1 of the glass plate 100 in the area corresponding to the fingerprint sensing area FA is greater than about 300 袖 m, The distance of the fingerprint sensor becomes farther away, and the sensitivity of the fingerprint recognition according to the touch of the input device may be lowered.

The protrusion P may be formed on the other surface 100b. The protrusions P may be formed in the area of the other surface 100b corresponding to the fingerprint sensing area FA of the one surface. The protrusions P may be formed in a region of the other surface 100b corresponding to the grooves of the one surface. The protrusion P may be integrally formed with the other surface 100b.

The protrusion P may include a curved surface. In detail, the protrusion P may include a curved surface having a predetermined curvature. For example, the protrusions P may be formed in an arcuate shape.

The protrusions P may have a constant height. The height of the protrusion P may be defined as the distance from the other surface 100b of the glass plate 100 to the maximum height of the protrusion P. [

The maximum height h of the protrusions P may be about 20 占 퐉 or less. In detail, the maximum height of the protrusions P may be about 5 占 퐉 to about 20 占 퐉. When the height of the protrusions P is more than about 20 占 퐉, the protrusions P are visible from the outside, . Further, the overall strength of the fingerprint sensor cover may be lowered depending on the imbalance of the force applied to the region where the protrusion is formed and the region where the protrusion is not formed.

The reinforcing layer 700 may be formed on at least one of the one surface 100a, the other surface 100b, and the side surface 100c. For example, the reinforcing layer 700 may be formed on the first surface 100a and the second surface 100b.

Alternatively, the reinforcing layer 700 may be formed on the first surface 100a, the second surface 100b, and the side surface 100c.

That is, the reinforcing layer 700 surrounds the one side 100a, the other side 100b, and the side 100c of the glass plate, or the reinforcing layer 700 is formed on the one side The reinforcement layer 700 may partially be formed on the first surface 100a, the second surface 100b and the side surface 100c of the glass plate 100. The reinforcement layer 700 may reduce the strength of the glass plate 100, . That is, it is possible to mitigate external impact applied on the glass plate 100 by the reinforcing layer 700, or to prevent scratches due to an external impact.

The enhancement layer 700 may include a metal. In detail, the enhancement layer 700 may include metal ions. For example, the enhancement layer 700 may comprise potassium ions (K < + >).

The enhancement layer 700 may include a compound containing a metal ion. For example, the enhancement layer 700 may comprise potassium chloride (KCl), including potassium ions and chloride ions.

For example, the reinforcing layer 700 may be formed through ion exchange with metal ions included in the glass plate 100. For example, after a potassium nitrate (KNO3) solution containing potassium ions is coated on a glass plate 100, a reinforcing layer containing potassium chloride is formed through ion exchange with a glass plate 100 containing sodium (Na) .

For example, the method of forming the reinforcing layer may be as follows.

First, a glass plate having a thickness of about 300 μm to about 1000 μm is prepared, and regions other than the fingerprint sensing region and the fingerprint sensing region are defined on the glass plate.

Subsequently, after the mask is disposed on a region other than the fingerprint sensing, the fingerprint sensing region may be etched.

For example, the etching may be performed by a chemical etching method. For example, the etching may be performed using an etchant such as a hydrofluoric acid solution.

Next, after the glass plate is preheated, the preheated glass plate may be immersed in a solution containing potassium nitrate.

The solution containing gallium nitrate may be a potassium nitrate solution having a purity of about 99% or more.

The temperature of the solution containing gallium nitrate may be a temperature of about 480 DEG C or more.

At this time, when the glass plate is soaked in the solution containing potassium nitrate, damage of the glass plate due to a rapid temperature change can be prevented by preheating the glass plate.

Subsequently, the glass plate is immersed in the glass plate for a certain period of time, and then the glass plate is taken out to form the reinforcing layer on the outer surface of the glass plate. For example, the glass plate can be immersed in the solution containing potassium nitrate for about 1 hour to about 3 hours, and then removed.

The glass plate 100 and the reinforcing layer 700 may be integrally formed. The reinforcing layer 700 may be formed integrally with at least one of the first surface 100a, the second surface 100b, and the side surface 100c of the glass plate 100.

The glass plate 100 and the reinforcing layer 700 may include an interface. At least one of potassium ion, chlorine ion, silicon oxide, aluminum oxide and sodium oxide may be mixed in the interface.

The thickness t2 of the reinforcing layer 700 may be about 15 占 퐉 to about 30 占 퐉. In detail, the thickness t2 of the reinforcing layer 700 may be about 17 占 퐉 to about 25 占 퐉. More specifically, the thickness t2 of the reinforcing layer 700 may be about 19 [mu] m to about 22 [mu] m.

When the thickness of the reinforcing layer 700 is less than about 15 占 퐉, the strength of the groove-formed glass plate region is lowered, and may be vulnerable to scratches due to an external impact or the like. In addition, when the thickness of the reinforcing layer is more than about 30 탆, a large difference in stress may be caused on the upper surface of the glass plate corresponding to the groove-formed region.

The thickness of the reinforcing layer 700 may be greater than the height of the protrusions P. [ That is, the height h of the protrusion P integrally formed with the other surface may be smaller than the thickness of the reinforcing layer 700.

The height h of the protrusion may be about 30% to about 60% of the thickness of the enhancement layer 700.

Accordingly, when an external impact or the like is applied in the direction of the protrusion, it is possible to prevent the protrusion area from being damaged or scratch bar from being generated, and thus the strength or durability of the fingerprint sensor cover can be improved.

The enhancement layer 700 may include a first enhancement layer 710 and a second enhancement layer 720. The first reinforcing layer 710 and the second reinforcing layer 720 may be classified according to the position of the reinforcing layer.

The first reinforcing layer 710 may be defined as a reinforcing layer of the fingerprint sensing area FA. The first reinforcing layer 710 may be defined as a reinforcing layer of the fingerprint sensing area FA on one side of the glass plate. The first reinforcing layer 710 may be defined as an inner reinforcing layer of the groove.

In addition, the second reinforcing layer 720 may be defined as a reinforcing layer in a region other than the fingerprint sensing region FA. The second reinforcing layer 720 may be defined as a reinforcing layer in a region other than the fingerprint sensing area FA of the glass plate. The second reinforcing layer 720 may be defined as an outer reinforcing layer of the groove.

Although the reinforcing layer 700 is described as being divided into the first reinforcing layer 710 and the second reinforcing layer 720 for convenience of explanation, the first reinforcing layer 710, The layer 720 may be integrally formed.

The first reinforcing layer 710 and the second reinforcing layer 720 may have the same or different thicknesses. When the first reinforcing layer 710 and the second reinforcing layer 720 are formed to have different thicknesses, the thickness difference may be about 0.5 탆 or less.

The first reinforcing layer 710 and the second reinforcing layer 720 may have different compressive stresses (CS). In detail, the first reinforcing layer 710 may have a first compressive stress CS1 and the second reinforcing layer 720 may have a second compressive stress CS2.

The first compressive stress CS1 may be less than the second compressive stress CS2. In detail, the first compressive stress CS1 can be from about 650 MPa to about 750 MPa. Also, the second compressive stress CS2 may be about 680 MPa to 780 MPa.

The difference (CS2-CS1) between the first compressive stress and the second compressive stress may be about 20 MPa to about 50 MPa. When the difference (CS2-CS1) between the first compressive stress and the second compressive stress exceeds about 20 MPa, due to the stress difference in each region, A warp of a size that can be visually recognized by the user is generated, and the visibility may be lowered.

In the fingerprint sensor cover according to the embodiment, the reinforcing layer may be formed on at least one of the outer surface, one surface, the other surface, and the side surface of the glass sheet to compensate the strength of the glass sheet.

Thus, the strength of the glass plate due to the formation of the grooves formed on one surface of the glass plate, that is, the receiving grooves for accommodating the fingerprint sensor, can be reduced.

Particularly, in the fingerprint sensor cover according to the embodiment, since the thickness of the reinforcing layer is controlled and the compressive stress is controlled for each region, the strength of the glass plate is prevented from lowering, It is possible to alleviate the occurrence of warping of the glass plate.

Therefore, the fingerprint sensor cover according to the embodiment can have improved reliability and visibility.

Hereinafter, the present invention will be described in more detail with reference to examples and comparative examples. These embodiments are merely illustrative of the present invention in order to explain the present invention in more detail. Therefore, the present invention is not limited to these embodiments.

Example 1

A groove was formed on the lower surface of the glass plate, and the glass plate was immersed in a potassium nitrate solution.

At this time, the glass plate contained sodium, and the thickness of the glass was about 550 μm, and the depth of the groove was about 300 μm.

Subsequently, the glass plate was immersed in a potassium nitrate solution for about 1 hour and then taken out.

Next, the thickness of the reinforcing layer formed on the outer surface of the glass plate, the degree of bending of the upper surface of the glass plate in the region corresponding to the groove, the strength of the glass plate, the difference in compressive stress between the inside and outside of the groove, Respectively.

The stress was measured using a glass stress tester FSM-6000.

In addition, the warpage was measured using VR-3000 manufactured by Keyence Corporation.

Example 2

The thickness of the reinforcing layer formed on the outer surface of the glass plate and the thickness of the reinforcing layer formed on the outer surface of the glass plate in the region corresponding to the groove The difference in the compressive stress between the inside of the groove and the outside of the groove, and the difference in the center stress were measured.

Example 3

The thickness of the reinforcing layer formed on the outer surface of the glass plate, the thickness of the reinforcing layer formed on the outer surface of the glass plate, and the thickness of the reinforcing layer formed on the outer surface of the glass plate in the same manner as in Example 1 except that the glass plate was immersed in potassium nitrate solution for about 3 hours, The difference in the compressive stress between the inside of the groove and the outside of the groove, and the difference in the center stress were measured.

Comparative Example 1

The thickness of the reinforcing layer formed on the outer surface of the glass plate and the thickness of the reinforcing layer formed in the region corresponding to the groove were measured after forming the reinforcing layer in the same manner as in Example 1 except that the glass plate was immersed in potassium nitrate solution for about 4 hours and then taken out. The difference in the compressive stress between the inside of the groove and the outside of the groove, and the difference in the center stress were measured.

Comparative Example 2

The thickness of the reinforcing layer formed on the outer surface of the glass plate, the thickness of the reinforcing layer formed on the outer surface of the glass plate, and the thickness of the reinforcing layer formed on the outer surface of the glass plate in the same manner as in Example 1 except that the glass plate was immersed in potassium nitrate solution for about 5 hours, The difference in the compressive stress between the inside of the groove and the outside of the groove, and the difference in the center stress were measured.

Comparative Example 3

Except that the glass plate was immersed in a potassium nitrate solution for about 6 hours and then taken out, and after the strengthening layer was formed in the same manner as in Example 1, the thickness of the reinforcing layer formed on the outer surface of the glass plate, The difference in the compressive stress between the inside of the groove and the outside of the groove, and the difference in the center stress were measured.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Enhanced layer thickness (DOL, 탆) 16.54 22.81 26.54 30.12 33.1 36.51 Compressive stress difference (? CS, MPa) 33.07 22.92 24.71 25.5 28.79 33.12 The central stress difference (? CT, MPa) 31 46.67 56.3 65.3 79.67 86 Deflection (탆) 5 9 16 19 22.2 29.8 Strength (mJ) 276 314 279 185 248 157

Comparative Example 4

The reinforcing layer was formed in the same manner as in Example 1, except that the glass plate was immersed in potassium nitrate solution and then removed to form a groove. Then, the warping of the glass plate was measured.

Example 1 Comparative Example 4 Deflection (탆) 9 59

Example 4

The glass plate with the reinforcing layer formed according to Examples 1 to 3 was subjected to the ball drop test several times to measure the breakage rate of the glass plate.

Number of times
One 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Breakage rate (%) Ball drop height
(Cm) 15 normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal 0 20 normal normal normal normal normal normal normal normal normal normal normal normal normal normal damage 6.7

Number of times
One 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Breakage rate (%) Ball drop height
(Cm) 20 normal normal normal normal normal normal normal normal normal normal normal normal normal normal normal 0 25 normal normal normal damage normal normal normal normal normal normal normal normal normal normal normal 6.7

Referring to Table 1, it can be seen that the thickness of the reinforcing layer increases as the strengthening time, that is, the immersion time of the glass plate in the potassium nitrate solution (strengthening time), increases. However, it can be seen that as the strengthening time increases, the warpage of the glass plate increases.

That is, when the strengthening time exceeds about 3 hours, the warpage of the glass plate is increased and the visibility is lowered.

In addition, when the strengthening time is less than about 3 hours, it can be seen that the warping and strength of the glass plate are improved as compared with the case where the strengthening time exceeds about 3 hours.

Further, referring to Table 2, when forming the grooves on the glass plate and then forming the reinforcing layer on the glass plate on which the groove is formed, after forming the reinforcing layer on the glass plate, The amount of warpage formed on the glass plate is reduced.

That is, the case where the groove is first formed on the glass plate and then the reinforcing layer is formed by the post-treatment is more advantageous in terms of visibility than the case where the groove is formed on the glass plate after the reinforcing layer is formed on the glass plate by the pretreatment have.

In addition, referring to Tables 3 and 4, it can be seen that the glass plate subjected to the tempering treatment for about 1 to 3 hours has a small glass plate breaking ratio according to the ball drop test. Accordingly, It can be seen that it is advantageous in terms of strength.

Hereinafter, a fingerprint sensing device including the fingerprint sensor cover according to the above-described embodiment will be described with reference to FIGS. 9 to 12. FIG. In the description of the fingerprint sensing device according to the embodiment, description of the same description as the fingerprint sensor cover described above will be omitted, and the same reference numerals are assigned to the same components.

Referring to FIG. 9, the fingerprint sensing apparatus according to the embodiment includes a fingerprint sensor cover and a fingerprint sensor 200 disposed on the fingerprint sensor cover.

The fingerprint sensor 200 may include a fingerprint sensor chip 210 and a fingerprint sensor pattern unit 220. The fingerprint sensor chip 210 and the fingerprint sensor pattern unit 220 may be connected to each other. The fingerprint sensor chip 210 and the fingerprint sensor pattern unit 220 may be electrically connected to each other. For example, the fingerprint sensor chip 210 and the fingerprint sensor pattern unit 220 may be electrically connected to each other, Method or a wire bonding method.

The fingerprint sensor 200 may be disposed on one side of the fingerprint sensor cover, that is, the glass plate 100. In detail, the fingerprint sensor 200 may be disposed inside the groove formed on one surface of the glass plate 100.

The fingerprint sensor 200 may be spaced apart from the lower surface H1 of the groove. In detail, the distance between the lower surface H1 and the fingerprint sensor 200 may be about 10 mu m to about 50 mu m.

In addition, the fingerprint sensor 200 may be disposed apart from the inclined surfaces H2 of the grooves.

The adhesive layer 300 may be disposed between the fingerprint sensor 200 and the lower surface H1 of the groove and / or between the fingerprint sensor 200 and the inclined surface H2 of the groove.

The adhesive layer 300 may include a resin. The adhesive layer 300 may be disposed inside the groove H. [ The adhesive layer 300 may be disposed on the lower surface H1. The fingerprint sensor 200 may be disposed on the adhesive layer 300. The fingerprint sensor 200 disposed in the groove H by the adhesive layer 300 may be fixed in the groove H. [ In addition, the adhesive layer 300 can protect the fingerprint sensor 200 from an external impact or the like.

The adhesive layer 300 may be disposed on at least one of the lower surface H1 of the groove and the inclined surface H2 of the groove.

For example, referring to FIG. 9, a first adhesive layer 310 may be disposed on the lower surface H1. That is, the first adhesive layer 300 may be disposed between the fingerprint sensor 200 and the lower surface H1 of the groove.

10, a first adhesive layer 310 may be disposed on the lower surface H1 and a second adhesive layer 320 may be disposed on the inclined surface H2. That is, a first adhesive layer 310 is disposed between the fingerprint sensor 200 and the lower surface H1 of the groove, and a second adhesive layer 320 is provided between the fingerprint sensor 200 and the inclined surface H2 of the groove May be disposed.

11, the exposed surface of the adhesive layer 300 may be disposed on the same plane as one surface of the reinforcing layer formed on the lower surface of the glass plate. That is, the height of the adhesive layer 300 and the depth of the groove may be the same.

12, an adhesive layer 300 is disposed between the fingerprint sensor 200 and the lower surface H1 of the groove and between the fingerprint sensor 200 and the inclined surface H2 of the groove, The adhesive layer 300 may be disposed on one surface of the glass plate formed in a region other than the groove.

The fingerprint sensing device according to the embodiment includes the fingerprint sensor cover described above so that even when the fingerprint sensor module is disposed in the groove of the fingerprint sensor cover, the strength of the fingerprint sensor cover can be prevented from being lowered, .

Accordingly, the fingerprint sensing apparatus according to the embodiment can have improved reliability and visibility.

Hereinafter, various types of touch windows including the fingerprint sensor cover according to positions where the electrodes are disposed on the effective area will be described with reference to FIGS. 13 to 15. FIG.

Referring to FIG. 13, another type of touch window includes a glass plate 100 and a first substrate 110, and a first sensing electrode 410 on the glass plate 100, a second sensing electrode on the first substrate 110, 2 sensing electrode 420. The sensing electrode 420 may be formed of a conductive material.

A first sensing electrode 410 extending in one direction and a first wiring electrode 510 connected to the first sensing electrode 410 are disposed on one surface of the glass substrate 100, 110 may have a second sensing electrode 420 extending in a direction different from the first direction and a second wiring electrode 520 connected to the second sensing electrode 420.

Alternatively, the sensing electrode is not disposed on the glass plate 100, and the sensing electrode may be disposed on both sides of the first substrate 110.

In detail, a first sensing electrode 410 extending in one direction and a first wiring electrode 510 connected to the first sensing electrode 410 are disposed on one surface of the first substrate 110, A second sensing electrode 420 extending in a direction different from the first direction and a second wiring electrode 520 connected to the second sensing electrode 420 may be disposed on the other surface of the substrate 110.

14, a touch window according to another type includes a glass plate 100, a first substrate 110 and a second substrate 120, and a first sensing electrode 410 on the first substrate 110 And a second sensing electrode 420 on the second substrate 120.

In detail, a first sensing electrode 410 extending in one direction and a first wiring electrode 510 connected to the first sensing electrode 410 are disposed on one surface of the first substrate 110, A second sensing electrode 420 extending in a direction different from the first direction and a second wiring electrode 520 connected to the second sensing electrode 420 may be disposed on one surface of the substrate 120.

Referring to FIG. 15, another type of touch window may include a glass plate 100, a first sensing electrode 410 and a second sensing electrode 420 on a substrate.

The first sensing electrode 410 and the second sensing electrode 420 may be disposed on the same side of the glass plate 100. For example, the first sensing electrode 410 and the second sensing electrode 420 may be spaced apart from each other on the same plane of the glass plate 100.

The first sensing electrode 410 may include a first wiring electrode 510 connected to the first sensing electrode 410 and a second wiring electrode 520 connected to the second sensing electrode 420. 510 may be disposed on the effective region and the ineffective region of the glass plate 100 and the second wiring electrode 520 may be disposed on the ineffective region of the glass plate 100.

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

Referring to FIG. 16, the touch device according to the embodiment may include a touch window disposed on the display panel 900.

Referring to FIG. 16, the touch device may be formed by combining the glass panel 100 and the display panel 900. The glass plate 100 and the display panel 900 may be bonded to each other through an adhesive layer 800. For example, the glass plate 100 and the display panel 900 may be bonded to each other through an adhesive layer 800 including an optical transparent adhesive (OCA, OCR).

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

When the display panel 900 is a liquid crystal display panel, the display panel 900 includes a first substrate 910 including a thin film transistor (TFT) and a pixel electrode, a second substrate 910 including color filter layers, The substrate 920 may be formed as a structure in which the liquid crystal layer is sandwiched between the substrates.

In addition, the display panel 900 may include a thin film transistor, a color filter, and a black matrix formed on a first substrate 910 and a second substrate 920 between the first substrate 910 Or a liquid crystal display panel of a color filter on transistor (COT) structure. That is, a thin film transistor may be formed on the first substrate 910, a protective film may be formed on the thin film transistor, and a color filter layer may be formed on the protective film. In addition, a pixel electrode that is in contact with the thin film transistor is formed on the first substrate 910. At this time, in order to improve the aperture ratio and simplify the mask process, the black matrix may be omitted, and the common electrode may be formed to serve also as the black matrix.

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

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

Referring to FIG. 17, the touch device according to the embodiment may include a touch window formed integrally with the display panel 900. That is, the substrate supporting at least one sensing electrode may be omitted.

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

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

Referring to FIG. 17, a first sensing electrode 401 may be disposed on one side of the glass plate 100. Also, a first wiring connected to the first sensing electrode 410 may be disposed. In addition, the second sensing electrode 420 may be disposed on one surface of the display panel 900. In addition, a second wiring connected to the second sensing electrode 420 may be disposed.

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

Further, the glass plate 100 may further include a polarizer. The polarizing plate may be a linear polarizing plate or an external light reflection preventing polarizing plate. For example, when the display panel 900 is a liquid crystal display panel, the polarizer may be a linear polarizer. In addition, when the display panel 900 is an organic light emitting display panel, the polarizing plate may be an external light reflection preventing polarizer.

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

Referring to FIG. 18, the touch device according to the embodiment may include a touch window formed integrally with the display panel 900. That is, the substrate supporting at least one sensing electrode may be omitted.

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

The display panel includes a first substrate 910 and a second substrate 920. At this time, at least one of the first sensing electrode 410 and the second sensing electrode 420 is disposed between the first substrate 910 and the second substrate 920. That is, at least one sensing electrode may be disposed on at least one surface of the first substrate 910 or the second substrate 920.

Referring to FIG. 18, a first sensing electrode 410 may be disposed on one surface of the glass plate 100. Also, a first wiring connected to the first sensing electrode 410 may be disposed. In addition, a second sensing electrode 420 and a second wiring may be formed between the first substrate 910 and the second substrate 920. That is, the second sensing electrode 420 and the second wiring may be disposed on the inner side of the display panel, and the first sensing electrode 410 and the first wiring may be disposed on the outer side of the display panel.

The second sensing electrode 420 and the second wiring may be disposed on the upper surface of the first substrate 910 or the rear surface of the second substrate 920.

Further, the glass plate 100 may further include a polarizer.

When the display panel is a liquid crystal display panel, when the second sensing electrode is formed on the upper surface of the first substrate 910, the sensing electrode may be formed with a thin film transistor (TFT) have. When the second sensing electrode is formed on the back surface of the second substrate 920, a color filter layer may be formed on the sensing electrode, or a sensing electrode may be formed on the color filter layer. When the display panel is an organic light emitting display panel, when the second sensing electrode is formed on the upper surface of the first substrate 910, the second sensing electrode may be formed with a thin film transistor or an organic light emitting diode .

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

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

Referring to Fig. 19, a mobile terminal is shown as an example of a touch device. The mobile terminal may include a valid area AA and a non-valid area UA. The effective area AA senses a touch signal by touching a finger or the like, and a command icon pattern part and a logo are formed on the non-valid area.

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

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

Claims (19)

A glass plate including a display area and a fingerprint sensing area,
Wherein the glass plate
One surface including a groove formed in the fingerprint sensing area;
An opposite surface to the one surface; And
And a reinforcing layer formed on the one surface and the other surface,
Wherein the other surface includes a protrusion formed on an area of the other surface corresponding to the fingerprint sensing area,
Wherein the compressive stress of the reinforcing layer on the fingerprint sensing area is less than the compressive stress of the reinforcing layer on the area other than the fingerprint sensing area. The method according to claim 1,
Wherein the protrusion includes a curved surface. 3. The method of claim 2,
The height of the protrusion is within the range of 5um to 20um. The method according to claim 1,
Wherein the thickness of the reinforcing layer is between 15 um and 30 um. The method according to claim 1,
Wherein the glass plate comprises at least one of silicon oxide, aluminum oxide, and sodium oxide. The method according to claim 1,
Wherein the enhancement layer comprises K < + > ions. The method according to claim 1,
Wherein a difference in compressive stress between the inner reinforcing layer of the groove and the reinforcing layer of the one surface is 20 to 50 Mpa. The method according to claim 1,
Wherein the height of the protrusion is smaller than the thickness of the reinforcing layer. 9. The method of claim 8,
Wherein the height of the protrusion is within a range of 30% to 60% of the thickness of the reinforcing layer. The method according to claim 1,
Wherein the thickness of the fingerprint sensor cover is 300 mu m to 1000 mu m. The method according to claim 1,
Wherein the thickness of the glass plate corresponding to the fingerprint sensing area is 200 to 300 um. 10. The method of claim 9,
Wherein the groove is formed at a depth of 30% to 60% with respect to the thickness of the fingerprint sensor cover in the region where the groove is not formed. A glass plate including a display area and a fingerprint sensing area; And
An adhesive layer on the fingerprint sensing area;
And a fingerprint sensor disposed on the adhesive layer,
Wherein the glass plate
One surface including a groove formed in the fingerprint sensing area;
An opposite surface to the one surface; And
And a reinforcing layer formed on the one surface and the other surface,
Wherein the other surface includes a protrusion formed on an area of the other surface corresponding to the fingerprint sensing area,
In the above aspect, the compressive stress of the reinforcing layer on the fingerprint sensing area is less than the compressive stress of the reinforcing layer on the area other than the fingerprint sensing area,
Wherein the adhesive layer is disposed in the groove,
Wherein the fingerprint sensor is disposed on the adhesive layer. 14. The method of claim 13,
Wherein the one surface corresponding to the fingerprint sensing area includes a lower surface and an inclined surface formed by the grooves,
Wherein the adhesive layer is disposed on the lower surface. 15. The method of claim 14,
Wherein the adhesive layer comprises a resin. 15. The method of claim 14,
The fingerprint sensor includes a fingerprint sensor chip and a fingerprint sensor pattern part
Wherein the fingerprint sensor chip is connected to the fingerprint sensor pattern part by a flip chip method or a wire bonding method. The method of claim 14, wherein
Wherein the distance between the lower surface and the fingerprint sensor module is 10 占 퐉 to 50 占 퐉. 18. The method of claim 17,
Wherein the adhesive layer is disposed on the lower surface and the inclined surface. 19. The method of claim 18,
Wherein the height of the adhesive layer is equal to the height of the groove.

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