WO2022164046A1

WO2022164046A1 - Smart mat

Info

Publication number: WO2022164046A1
Application number: PCT/KR2021/019770
Authority: WO
Inventors: 강민기; 유성호; 홍성진; 박태준; 남기연
Original assignee: 주식회사 오몰래
Priority date: 2021-02-01
Filing date: 2021-12-23
Publication date: 2022-08-04

Abstract

The present invention relates to a smart mat comprising: a pair of cover layers; and a sensor layer disposed between the pair of cover layers and including a plurality of cell areas, wherein the sensor layer comprises: first sensing cells and second sensing cells overlappingly arranged in the respective cell areas; and dot spacers disposed in the respective cell areas to maintain a spacing between the first sensing cells and the second sensing cells in a normal state.

Description

smart mat

The present invention relates to a smart mat capable of detecting a user's body position.

Recently, as interest in health care has increased, indoor exercises such as yoga, gymnastics, and stretching have been actively performed, and many auxiliary devices related to such indoor exercise are being sold.

Among them, the mat plays a role of alleviating the discomfort caused by the contact of a specific part of the body with the floor, and is also used as an auxiliary device to prevent the user from slipping during exercise.

It is an object of the present invention to provide a smart mat that can detect a contact position by the body.

In addition, another object of the present invention is to provide a smart mat that can prevent damage and failure of the sensor layer by forming an air passage in the insulating layer.

The smart mat according to an embodiment of the present invention includes a pair of cover layers, and a sensor layer disposed between the pair of cover layers and including a plurality of cell areas, wherein the sensor layer includes the cell area first sensing cells and second sensing cells overlapping each other, and dots respectively arranged in the cell regions to maintain an interval between the first sensing cells and the second sensing cells in a normal state It may include spacers.

In addition, the sensor layer includes first connection patterns connecting the first sensing cells in a first direction by a unit number to form first sensing cell groups, and intersecting the second sensing cells in the first direction. It may further include second connection patterns for forming second sensing cell groups by connecting the number of units along the second direction.

In addition, the sensor layer further includes a first sensor substrate and a second sensor substrate facing each other, wherein the first sensing cells and the first connection patterns are disposed on one surface of the first sensor substrate, The second sensing cells and the second connection patterns may be disposed on one surface of the second sensor substrate facing the one surface of the first sensor substrate.

In addition, a plurality of first openings and a plurality of second openings are respectively formed in the interior of the first sensing cells and the interior of the second sensing cells, and the dot spacers may include the first openings overlapping each other and the plurality of second openings, respectively. It may be positioned between one surface of the first sensor substrate and one surface of the second sensor substrate through the second openings.

In addition, the sensor layer may further include an insulating layer positioned between the first sensor substrate and the second sensor substrate, and the insulating layer may be positioned in an outer region of the cell regions and a space between the cell regions. can

In addition, a plurality of air passages are formed in the insulating layer, and the air passages communicate with each other a first air passage for communicating at least some of the cell regions located at the edge with the outside of the sensor layer and the cell regions adjacent to each other. and may include at least one of the second air passages.

The insulating layer may include a sub insulating layer positioned on the first sensor substrate or the second sensor substrate, and an adhesive layer positioned on the sub insulating layer.

In addition, the sensor layer includes a plurality of first sensing lines extending from the first sensing cell groups to one side of the first sensor substrate, and from the second sensing cell groups to one side of the second sensor substrate. It may further include a plurality of extended second sensing lines, and the first sensing lines and the second sensing lines may be connected to a circuit board on which a controller is mounted.

In addition, the first sensing cell groups and the second sensing cell groups overlapping each other form a sensing region, and each sensing region is formed by receiving a driving signal from the second sensing cell groups included in each sensing region. can be driven in parallel.

Also, the controller may detect the cell region pressed by the user by using the sensing signal transmitted from the first sensing cell groups included in each sensing region.

According to the present invention as described above, it is possible to provide a smart mat capable of detecting the contact position by the body.

In addition, according to the present invention, it is possible to provide a smart mat that can prevent damage and failure of the sensor layer by forming an air passage in the insulating layer.

1 is a view showing a smart mat according to an embodiment of the present invention.

2 is a view showing a cross-section of a mat according to an embodiment of the present invention.

3 is a view showing a sensor layer according to an embodiment of the present invention.

4A is a diagram illustrating a first sensor substrate and first sensing cells according to an embodiment of the present invention, FIG. 4B is a diagram additionally illustrating first sensing lines according to an embodiment of the present invention, and FIG. 4C is a diagram of the present invention It is a diagram showing a first sensing cell according to an embodiment.

5A is a diagram illustrating a second sensor substrate and second sensing cells according to an embodiment of the present invention, FIG. 5B is a diagram additionally illustrating second sensing lines according to an embodiment of the present invention, and FIG. 5C is a diagram of the present invention It is a diagram showing a second sensing cell according to an embodiment.

6 is a view showing a state in which a first sensor substrate and a second sensor substrate are overlapped according to an embodiment of the present invention.

7 is a view showing a control unit according to an embodiment of the present invention.

8A is a view showing a cell region according to an embodiment of the present invention, FIG. 8B is a view showing a cross-section of the cell region shown in FIG. 8A, and FIG. 8C is a view showing a cell region according to another embodiment of the present invention to be.

9A is a view showing an insulating layer and air passages according to an embodiment of the present invention, FIG. 9B is a view showing a cell region according to an embodiment of the present invention, and FIG. 9C is a cross-section of the cell region shown in FIG. 9B 9d is a view showing the width of the air passages according to the embodiment of the present invention.

Hereinafter, embodiments related to the present invention are illustrated in the drawings and will be described in detail through detailed description. However, the present invention is not limited to the embodiments disclosed below, it can be implemented in various different forms, and it should be understood to include all changes, equivalents and substitutes included in the spirit and scope of the present invention. .

In describing the components of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. In addition, in this specification, when it is described that a component is "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to the other component, but each component It should be understood that another element may be “connected”, “coupled” or “connected” between elements. In the case of "connected", "coupled" or "connected", it is understood to be physically "connected", "coupled" or "connected" as well as electrically "connected", "coupled" or "connected" as needed. can be

Hereinafter, with reference to the drawings related to embodiments of the present invention, a smart mat according to an embodiment of the present invention will be described.

1 is a view showing a smart mat according to an embodiment of the present invention, Figure 2 is a view showing a cross-section of the mat according to an embodiment of the present invention.

Referring to FIG. 1 , a smart mat 1 according to an embodiment of the present invention may include a mat 2 and a housing 3 disposed on one side of the mat 2 .

The mat 2 serves to assist the user's physical activity, and also has a sensor structure capable of detecting a contact area by the user.

For example, the mat 2 may have a rectangular shape, in which case the first direction (eg, the X-axis direction) and the second direction (eg, the Y-axis direction) are the length of the mat 2 . It can be defined in a direction and a width direction, respectively. However, the shape of the mat 2 is not limited thereto, and may be changed into various shapes.

The housing 3 is coupled to a portion of one side of the mat 2, and may accommodate a circuit board 30 (see FIG. 3) and a control unit 40 (see FIG. 3) for driving and controlling the mat 2, etc. .

Referring to FIG. 2 , the mat 2 may include a pair of

cover layers

11 and 12 and a sensor layer 20 .

The sensor layer 20 may be disposed between the first cover layer 11 and the second cover layer 12 .

The first cover layer 11 may be disposed on one surface of the sensor layer 20 , and the second cover layer 12 may be disposed on the other surface of the sensor layer 20 . In addition, since the remaining edge portions of the first cover layer 11 and the second cover layer 12 except for one side connected to the housing 3 are attached to each other, external exposure of the sensor layer 20 can be prevented. .

The first cover layer 11 and the second cover layer 12 are made of a material such as polyvinyl chloride (PVC), a thermoplastic elastomer (TPE), and nitrile-butadiene rubber (NBR). It may be configured to include, but is not limited to.

Referring to FIG. 3 , the sensor layer 20 according to an embodiment of the present invention may include a plurality of cell areas CA.

One cell area CA constitutes a minimum unit capable of sensing body contact, and a predetermined number of cell areas CA may each form a sensing area SA.

For example, the cell areas CA may be arranged in a grid shape, but is not limited thereto, and may be arranged in various shapes as needed.

The sensor layer 20 may be connected to the circuit board 30 disposed inside the housing 3 . For example, the sensor layer 20 may be electrically connected to the circuit board 30 through

separate connectors

31 and 32 .

In addition, the control unit 40 for driving and controlling the sensor layer 20 may be mounted on the circuit board 30 . The control unit 40 may supply a driving signal for driving the cell regions CA to the sensor layer 20 , and receive a detection signal from the sensor layer 20 to control the user's body for the cell regions CA. contact can be detected.

Referring to FIG. 4A , a plurality of first sensing cells 110 and a plurality of first connection patterns 120 may be disposed on one surface of the first sensor substrate 100 .

The first sensing cells 110 are respectively disposed in the cell areas CA of the sensor layer 20 , and may be divided into a plurality of first sensing cell groups G1 .

The first connection patterns 120 may form the first sensing cell groups G1 by connecting the first sensing cells 110 unit by unit along the first direction (eg, the X-axis direction). have.

4A illustrates that four first sensing cells 110 form one first sensing cell group G1, but this is merely exemplary, and the first sensing cells constituting the first sensing cell group G1 The number of cells 110 may be changed.

Referring to FIG. 4B , first sensing lines 130 may be additionally disposed on one surface of the first sensor substrate 100 .

The first sensing lines 130 may each extend from the first sensing cell groups G1 to one side of the first sensor substrate 100 .

For example, one end of each first sensing line 130 may be connected to at least one first sensing cell 110 belonging to each first sensing cell group G1 , and The other end may extend to one side of the first sensor board 100 and may be connected to the circuit board 30 through the first connector 31 .

Referring to FIG. 4C , a plurality of first openings 113 may be formed inside the first sensing cell 110 according to an embodiment of the present invention to prevent malfunction due to parasitic capacitance. .

The first sensing cell 110 includes a first edge line 111 forming a closed loop along the edge of the cell area CA, and an inner area of the first edge line 111 as a plurality of first sensing cells. It may include first sub-lines 112 divided into one opening 113 .

For example, the first sub-lines 112 may be formed to extend long in a first direction (eg, an X-axis direction) to be connected to the first edge line 111 .

Referring to FIG. 5A , a plurality of second sensing cells 210 and a plurality of second connection patterns 220 may be disposed on one surface of the second sensor substrate 200 . In this case, one surface of the second sensor substrate 200 may be disposed to face the one surface of the first sensor substrate 100 .

The second sensing cells 210 are respectively disposed in the cell areas CA of the sensor layer 20 to overlap the first sensing cells 110 , and are divided into a plurality of second sensing cell groups G2 . can be

The second connection patterns 220 connect the second sensing cells 210 in a unit number along a second direction (eg, Y-axis direction) crossing the first direction (eg, X-axis direction). The second sensing cell groups G2 may be formed by connecting them.

5A illustrates that three second sensing cells 210 form one second sensing cell group G2, but this is merely exemplary, and the second sensing constituting the second sensing cell group G2 The number of cells 210 may be changed.

Referring to FIG. 5B , second sensing lines 230 may be additionally disposed on one surface of the second sensor substrate 200 .

The second sensing lines 230 may each extend from the second sensing cell groups G2 to one side of the second sensor substrate 200 .

For example, one end of each second sensing line 230 may be connected to at least one second sensing cell 210 belonging to each second sensing cell group G2, and The other end may extend to one side of the second sensor board 200 and may be connected to the circuit board 30 through the second connector 32 .

Referring to FIG. 5C , in the inside of the second sensing cell 210 according to the embodiment of the present invention, a plurality of second openings 213 to prevent malfunction due to parasitic capacitance with the first sensing cell 110 . can be formed.

The second sensing cell 210 includes a second edge line 211 forming a closed loop along the edge of the cell area CA, and a plurality of second openings ( It may include second sub-lines 212 divided into 213 .

For example, the second sub-lines 212 are formed to be elongated in a second direction (eg, the Y-axis direction) intersecting the first direction (eg, the X-axis direction) to form a second edge line. (211) may be connected.

6 is a view showing a state in which a first sensor substrate and a second sensor substrate are overlapped according to an embodiment of the present invention, and FIG. 7 is a view showing a control unit according to an embodiment of the present invention.

Referring to FIG. 6 , the first sensor substrate 100 and the second sensor substrate 200 constituting the sensor layer 20 may be disposed to overlap. 6 illustrates a case in which the first sensor substrate 100 is disposed on the upper side of the second sensor substrate 200 , but on the contrary, the second sensor substrate 200 is disposed on the upper side of the first sensor substrate 100 . may be

One surface of the first sensor substrate 100 on which the first sensing cells 110 are disposed and one surface of the second sensor substrate 200 on which the second sensing cells 210 are disposed may be disposed to face each other.

Accordingly, the predetermined number of first sensing cell groups G1 and the predetermined number of second sensing cell groups G2 may each overlap each other, and the overlapping first sensing cell groups G1 and the second sensing cell groups G1 may be overlapped with each other. The two sensing cell groups G2 may form sensing areas SA1, SA2...SA8, respectively.

In addition, the first sensing cell groups G1 have a shape that is elongated in a first direction (eg, X-axis direction), and the second sensing cell groups G2 are formed in a second direction (eg, X-axis direction). , Y-axis direction), the first sensing cell groups G1 and the second sensing cell groups G2 constituting the specific sensing area SA may be arranged to cross each other. .

Referring to FIG. 7 , the controller 40 may include a plurality of

control ICs

41 , 42 ... 48 for individually controlling each sensing area SA1 , SA2 ... SA8 .

For example, when the sensor layer 20 includes eight sensing areas SA1, SA2...SA8, eight control ICs corresponding to each sensing area SA1, SA2...SA8 one-to-one (41, 42...48) can be installed.

Each of the

control ICs

41 , 42 ... 48 includes the first sensing cell groups G1 and the second sensing cell groups G2 included in the respective sensing areas SA1 , SA2 ... SA8 . ) and by supplying a driving signal to the second sensing cell groups G2 included in each sensing area SA1, SA2...SA8, each sensing area SA1, SA2...SA8. can be driven in parallel at the same time.

Thereafter, the

control ICs

41 , 42 ... 48 detect a change in the sensing signal received from the first sensing cell groups G1 of each sensing area SA1 , SA2 ... SA8 , and thus each sensing area It is possible to detect the cell area CA pressed by the user for each (SA1, SA2...SA8).

On the other hand, in order to stably maintain the fundamental potential of the driving signals output from the

control ICs

41, 42...48, one terminal of each of the

control ICs

41, 42...48 from which the driving signals are output is Resistors R1, R2...R8 may be connected.

Each of the resistors R1 , R2 ... R8 may be mounted on the circuit board 30 , and one end of each resistor R1 , R2 ... R8 is connected to each of the

control ICs

41 , 42 ... 48 . It is connected to one terminal, and the other end of each resistor R1, R2...R8 may receive a predetermined fixed voltage.

For example, the resistors R1 , R2 ... R8 may have the same resistance value, and may generally be set to different resistance values by reflecting the position difference of each sensing area SA1 , SA2 ... SA8 . can

8A and 8B , a first sensing cell 110 , a second sensing cell 210 , and dot spacers 300 may be positioned in the cell area CA according to an embodiment of the present invention. .

The first sensing cell 110 and the second cell sensing cell 210 may be disposed to overlap in a third direction (eg, the Z-axis direction), and basically the first sensing cell 110 and the second cell are disposed. The single cell 210 may maintain a constant interval and maintain a non-contact state.

For example, the first sensing cell 110 is located above the second sensing cell 210 , and in this case, the first edge line 111 of the first sensing cell 110 is the second sensing cell 210 . It is positioned above the second edge line 211 , and the first sub-lines 112 of the first edge line 111 intersect the second sub-lines 212 of the second selling cell 210 . can be

The dot spacers 300 may be dispersedly disposed in the cell area CA to maintain a distance between the first sensing cell 110 and the second cell sensing cell 210 in a normal state.

That is, the dot spacers 300 are positioned between one surface of the first sensor substrate 100 and one surface of the second sensor substrate 200 , and the gap between the first sensor substrate 100 and the second sensor substrate 200 . can be kept constant.

The normal state means a state in which no pressure is applied to the cell area CA or a pressure less than a threshold value is applied so that the first sensing cell 110 and the second cell sensing cell 210 are not in contact, and the contact state is the cell area It means a state in which the first sensing cell 110 and the second sensing cell 210 are in contact with the pressure exceeding the threshold value applied to (CA).

For example, when a user's body part is positioned on the cell area CA and a pressure exceeding a threshold is applied, the cell area CA is changed from a normal state to a contact state, and the first sensing is performed in the contact state. At least a portion of the cell 110 and at least a portion of the second selthing cell 210 may be in contact with each other to cause a change in the sensing signal.

Thereafter, when the pressure on the cell area CA is released, the first sensing cell 110 and the second cell sensing cell 210 are in a non-contact state again due to the restoring force of the dot spacers 300 , and accordingly, the cell area ( CA) can be changed from a contact state to a normal state.

The dot spacers 300 may be manufactured in a state of being attached to any one of the first sensor substrate 100 and the second sensor substrate 200 . For example, as shown in FIG. 8B , the dot spacers 300 are manufactured in a state in which they are attached to the second sensor substrate 200 , so that the distal ends of the dot spacers 300 are attached to the first sensor substrate 100 . It can be in contact with one side. Conversely, the dot spacers 300 may be manufactured in a state of being attached to the first sensor substrate 100 , and distal ends of the dot spacers 300 may be in contact with one surface of the second sensor substrate 200 .

In particular, the dot spacers 300 may be disposed in a region where the first opening 113 of the first sensing cell 110 and the second opening 213 of the second sensing cell 210 overlap each other. That is, by utilizing the

openings

113 and 213 provided to reduce the parasitic capacitance between the first sensing cell 110 and the second sensing cell 210 , a separate space for disposing the dot spacers 300 is provided. Since there is no need to secure, the space in the sensor layer 20 can be used more efficiently.

The dot spacers 300 may be formed of a material having elasticity, and may be formed of various resin materials.

Meanwhile, referring to FIG. 8C , dot spacers 310 may be added in the cell area CA according to another embodiment of the present invention. For example, the time to return from the contact state to the normal state may be different depending on the location of the cell region CA, and at least one of the entire cell regions CA may be uniformly matched with the return time from the contact state to the normal state. Dot spacers 310 may be additionally disposed in the above specific cell area CA.

Referring to FIG. 9A , the sensor layer 20 according to the embodiment of the present invention may further include an insulating layer 400 positioned between the first sensor substrate 100 and the second sensor substrate 200 . In this case, the insulating layer 400 may be formed in the outer region of the cell regions CA.

Specifically, the insulating layer 400 is formed in a space between the outer region of the cell regions CA and the cell regions CA, and is formed on the first sensor substrate 100 positioned outside the cell regions CA. A conductor (eg, the first connection patterns 120 , the first sensing lines 130 , etc.) and the conductor of the second sensor substrate 200 (eg, the second connection patterns 220 ) , the first sensing lines 230 , etc.) may be prevented from contacting each other.

On the other hand, when strong external pressure is applied to a specific cell area CA or the smart mat 1 is rolled up for transport of the smart mat 1, the adjacent insulating layer due to the sudden movement of air inside the cell area CA There is a possibility that a part of (400) may be damaged. In addition, when the smart mat 1 is rolled up and unfolded, there is a possibility that the shape of the cell area CA is not normally restored.

Accordingly, a plurality of

air passages

510 , 521 , and 522 may be formed in the insulating layer 400 to prevent damage or failure of the sensor layer 20 .

For example, the

air passages

510 , 521 , and 522 may include a first air passage 510 communicating at least a portion of the cell regions CA located at the edge with the outside of the sensor layer 20 , respectively, and adjacent to each other. At least one of the

second air passages

521 and 522 connecting the cell regions CA may be included.

In addition, in the case of the

second air passages

521 and 522 , a second air passage 521 connected between adjacent cell regions CA in a first direction (eg, an X-axis direction), and a second direction ( For example, at least one of the second air passages 522 connected between the cell areas CA adjacent in the Y-axis direction may be included.

Referring to FIG. 9C , the insulating layer 400 according to the embodiment of the present invention may include a sub insulating layer 410 and an adhesive layer 420 .

The sub insulating layer 410 may be positioned on one surface of the first sensor substrate 100 or one surface of the second sensor substrate 200 , and the adhesive layer 420 may be positioned on the sub insulating layer 410 . . The first sensor substrate 100 and the second sensor substrate 200 may be attached through the insulating layer 400 including the adhesive layer 420 .

Meanwhile, the sub insulating layer 410 and the

dot spacers

300 and 310 may be formed on one surface of the first sensor substrate 100 or one surface of the second sensor substrate 200 through the same process.

For example, the sub insulating layer 410 and the

dot spacers

300 and 310 may be formed of the same material under the same mask process, and the sub insulating layer 410 is formed on one surface of the first sensor substrate 100 . In this case, the

dot spacers

300 and 310 may also be attached and formed on one surface of the first sensor substrate 100 , and when the sub insulating layer 410 is formed on one surface of the second sensor substrate 200 , the dot spacers may be formed. (300, 310) may also be formed attached to one surface of the second sensor substrate 200.

Referring to FIG. 9D , at least some of the

air passages

510 , 521 , and 522 according to an embodiment of the present invention may have different widths compared to

other air passages

510 , 521 , and 522 .

For example, since the flow rate of the air decreases as the region is located farther from the housing 3, the

second air passages

521, 521, 522) may be set differently.

A second air passage 521 ′ spaced apart by a first distance along a first direction (eg, X-axis direction) from the housing 3 or one side portion of the sensor layer 20 coupled to the housing 3 , The widths W2 and W4 of 522 ′ are a second distance along the first direction (eg, the X-axis direction) from the housing 3 or a portion of the sensor layer 20 coupled to the housing 3 by a second distance. The widths W1 and W3 of the

second air passages

521 and 522 that are spaced apart may be set to be larger than the widths W1 and W3. In this case, the first distance may be set to be larger than the second distance.

Those of ordinary skill in the art to which the present invention pertains will understand that the present invention may be embodied in other specific forms without changing the technical spirit or essential features thereof. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims to be described later rather than the above detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. should be interpreted

Claims

a pair of cover layers; and

a sensor layer disposed between the pair of cover layers and including a plurality of cell regions; including,

The sensor layer is

first sensing cells and second sensing cells overlapping the cell regions, respectively; and

dot spacers disposed in each of the cell regions to maintain a distance between the first sensing cells and the second sensing cells in a normal state; A smart mat that includes.
According to claim 1,

The sensor layer is

first connection patterns for forming first sensing cell groups by connecting the first sensing cells in a unit number along a first direction; and

second connection patterns for forming second sensing cell groups by connecting the second sensing cells in units of a second direction intersecting the first direction; Smart mat further comprising.
3. The method of claim 2,

The sensor layer is

a first sensor substrate and a second sensor substrate facing each other; further comprising,

The first sensing cells and the first connection patterns,

It is disposed on one surface of the first sensor substrate,

The second sensing cells and the second connection patterns,

A smart mat disposed on one surface of the second sensor substrate facing the one surface of the first sensor substrate.
According to claim 1,

Inside the first sensing cells and inside the second sensing cells,

A plurality of first openings and a plurality of second openings are respectively formed;

The dot spacers are

A smart mat positioned between one surface of the first sensor substrate and one surface of the second sensor substrate through the first openings and the second openings overlapping each other.
4. The method of claim 3,

The sensor layer is

an insulating layer positioned between the first sensor substrate and the second sensor substrate; further comprising,

The insulating layer is

A smart mat positioned in an outer region of the cell regions and in a space between the cell regions.
6. The method of claim 5,

In the insulating layer,

multiple air passages; is formed,

The air passages are

A smart mat comprising at least one of a first air passage communicating at least some of the cell regions located at the edge with the outside of the sensor layer, and a second air passage communicating mutually adjacent cell regions, respectively.
6. The method of claim 5,

The insulating layer is

a sub insulating layer positioned on the first sensor substrate or the second sensor substrate; and

an adhesive layer positioned on the sub insulating layer; A smart mat that includes.
4. The method of claim 3,

The sensor layer is

a plurality of first sensing lines extending from the first sensing cell groups to one side of the first sensor substrate; and

a plurality of second sensing lines extending from the second sensing cell groups to one side of the second sensor substrate; further comprising,

The first sensing lines and the second sensing lines are

A smart mat that is connected to the circuit board on which the control unit is mounted.
9. The method of claim 8,

The first sensing cell groups and the second sensing cell groups overlapping each other are,

Each forming a sensing region,

Each sensing area is

A smart mat in which the second sensing cell groups included in each sensing area are driven in parallel by receiving a driving signal.
10. The method of claim 9,

The control unit is

A smart mat for detecting a cell region pressed by a user using a sensing signal transmitted from the first sensing cell groups included in each sensing region.