KR20150002326A - Touch sensing device and manufacturing method of the same - Google Patents

Abstract

An embodiment of the present invention relates to a touch sensing device for improving touch sensitivity. The touch sensing device includes: a first electrode pattern layer which is formed on one side of a first substrate and includes a plurality of first plane electrodes corresponding to a first direction and a plurality of first loop electrodes which cover each outside of the first plane electrodes; and a second electrode pattern layer which is insulated from the first electrode pattern layer and includes a plurality of second plane electrodes corresponding to a second direction crossing the first direction and a plurality of second loop electrodes which cover each outside of the second plane electrodes.

Description

TECHNICAL FIELD [0001] The present invention relates to a touch sensing device and a method of manufacturing the touch sensing device.

The present invention relates to a touch sensing device which is advantageous for thinning and whose touch sensitivity can be improved, and a manufacturing method thereof.

2. Description of the Related Art Generally, personal computers, portable communication devices, and other personal-purpose information processing devices constitute interfaces with users by using various input devices such as a keyboard, a mouse, and a digitizer. 2. Description of the Related Art [0002] With the recent development of mobile communication equipment, input devices such as a keyboard and a mouse are difficult to enhance the completeness of a product, and development of a highly portable input device that can be used in a simpler manner has continued. Accordingly, a touch sensing apparatus has been proposed in which a user directly touches the screen with a hand or a pen to input information.

The touch sensing device has a few malfunctions, is easy to carry because it can input characters without any other input device, and has a merit that a user can easily recognize a usage method. Thus, the touch sensing device has recently been applied to various information processing devices. In particular, the touch sensing device is generally implemented in a form added to a flat panel display device, rather than being implemented solely. When the flat panel display device with the touch sensing device is used, an icon or keyboard displayed on the screen is selected to provide an input / output interface through which the corresponding icon or keyboard is selected to input information.

As a method of sensing the touch by the touch sensing device, there are a resistive type, a capacitive type, and an electro-magnetic type.

Among them, the capacitance type forms an equal potential in the conductive film and senses the touch based on the change of the capacitance due to the contact.

The electromagnetic induction method senses the touch based on the LC value induced as the electronic pen touches the conductive film.

Meanwhile, recent touch sensing apparatuses include a first touch panel of a capacitive type, a second touch panel of an electromagnetic induction type, and an adhesive layer which couples the first touch panel and the electrostatic capacitive type touch panel, .

In this case, each of the first and second touch panels includes a separate substrate, and an adhesive layer for bonding the first and second touch panels is disposed between the first and second touch panels. Since the first touch panel of the capacitive type can sense a direct touch, the second touch panel of the electromagnetic induction type should be disposed below the first touch panel.

As a result, there is a problem that the thickness of the touch sensing device is limited, and the intensity of the signal sensed by the second touch panel of the electromagnetic induction type is reduced, thereby lowering the touch sensitivity.

The present invention provides a touch sensing device and a method of manufacturing the touch sensing device, which can be advantageously reduced in thickness by integrating a capacitive type and an electromagnetic induction type in an integrated manner and capable of improving the degree of touch sensitivity.

According to an aspect of the present invention, there is provided a plasma display panel including a plurality of first planar electrodes formed on a first surface of a first substrate and corresponding to a first direction, A first electrode pattern layer including a loop electrode; And a plurality of second planar electrodes that are insulated from the first electrode pattern layer and correspond to a second direction crossing the first direction and a plurality of second planar electrodes that surround the outline of each of the plurality of second planar electrodes, And a second electrode pattern layer including an electrode.

The present invention also provides a plasma display panel comprising a first substrate and a second substrate on the first substrate, the first substrate including a plurality of first planar electrodes corresponding to the first direction and a plurality of first loop electrodes surrounding the plurality of first planar electrodes, ; And a plurality of second planar electrodes that are insulated from the first electrode pattern layer and correspond to a second direction crossing the first direction and a plurality of second planar electrodes that surround the outline of each of the plurality of second planar electrodes, And forming a second electrode pattern layer including an electrode on the first electrode pattern layer.

The touch sensing apparatus according to an embodiment of the present invention includes a plurality of first and second planar electrodes and a plurality of first and second loop electrodes formed on the same layer.

Accordingly, it is possible to provide touch sensing of the capacitive type and touch sensing of the electromagnetic induction type without including the capacitive touch panel and the electromagnetic induction type touch panel separately attached to the lower part thereof.

Since the plurality of first and second loop electrodes are formed on the same layer as each of the plurality of first and second planar electrodes, the intensity of the signal received by the plurality of first and second loop electrodes is increased accordingly, The degree of touch sensitivity to the touch of the electromagnetic induction type can be improved.

Further, it is preferable that a first electrode pattern layer including a plurality of first planar electrodes and a plurality of first loop electrodes, and a second pattern layer including a plurality of second planar electrodes and a plurality of second loop electrodes, Since only the layer is interposed, it can be advantageous for thinning.

1 is a perspective plan view illustrating a touch sensing apparatus according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line I-I 'of FIG. 1 according to the first embodiment of the present invention.
3 is a cross-sectional view showing II-II 'of FIG. 1 according to the first embodiment of the present invention.
4 is a flowchart illustrating a method of manufacturing a touch sensing apparatus according to an embodiment of the present invention.
5 is a cross-sectional view taken along line I-I 'of FIG. 1 according to a second embodiment of the present invention.
6 is a cross-sectional view of II-II 'of FIG. 1 according to the second embodiment of the present invention.
7 is a flowchart illustrating a method of manufacturing a touch sensing apparatus according to a second embodiment of the present invention.

Hereinafter, a touch sensing apparatus and a method of manufacturing the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, a touch sensing apparatus and a manufacturing method thereof according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG.

1, the touch sensing apparatus 100 according to the first embodiment of the present invention is formed on one surface of a first substrate 101 and a first substrate 101, A first electrode pattern layer 110 including a plurality of first planar electrodes 111 corresponding to the plurality of first planar electrodes 111 and a plurality of first loop electrodes 112 surrounding the outer peripheries of the plurality of first planar electrodes 111, And a plurality of second planar electrodes 121 that are insulated from the first electrode pattern layer 110 and correspond to a second direction (longitudinal direction in FIG. 1) that intersects the first direction, And a second electrode pattern layer 120 including a plurality of second loop electrodes 122 surrounding the outer peripheries of the electrodes 121.

The touch sensing apparatus 100 further includes a first input terminal 112a and a first output terminal 112b connected to both ends of each of the plurality of first loop electrodes 112. [

Here, the first input terminal 112a and the first output terminal 112b of each of the plurality of first loop electrodes 112 may be formed as a part of the first electrode pattern layer 110. That is, on the same layer as the plurality of first loop electrodes 112.

In addition, the first input terminal 112a and the first output terminal 112b of each of the plurality of first loop electrodes 112 are arranged in a direction parallel to one side edge (the right edge in FIG. 1) of the first substrate 101 As shown in FIG. In this way, the two or more first loop electrodes 112 are adjacent to or intersect with each other, and the possibility of signal interference or short can be reduced.

The touch sensing apparatus 100 further includes a second input terminal 122a and a second output terminal 122b connected to both ends of each of the plurality of second loop electrodes 122. [

Here, the second input terminal 122a and the second output terminal 122b of each of the plurality of second loop electrodes 122 may be formed as a part of the second electrode pattern layer 120. That is, on the same layer as the plurality of second loop electrodes 122.

In addition, the second input terminal 122a and the second output terminal 122b of each of the plurality of second loop electrodes 122 are arranged in a direction parallel to one side edge (the right edge in FIG. 1) of the second substrate 101 As shown in FIG. In this way, the two or more second loop electrodes 122 may be adjacent to or intersect with each other, and the possibility of signal interference or short may be reduced.

2 and 3, the touch sensing apparatus 100 according to the first embodiment includes a first substrate 101, a plurality of first planar electrodes 111 formed on one surface of the first substrate 101, A first electrode pattern layer 110 formed on one surface of the first substrate 101 and covering the first electrode pattern layer 110; A second substrate 102 formed on the first insulating layer 130, a plurality of second planar electrodes 121 and a plurality of second loop electrodes 122 formed on one surface of the second substrate 102, And a second insulating layer 140 formed on one entire surface of the second substrate 102 and covering the second electrode pattern layer 120. The second electrode pattern layer 120 includes a first electrode layer 120,

The touch sensing device 100 may further include a cover substrate 103 formed on the second insulating layer 140 and protecting the first and second electrode pattern layers 110 and 120.

The first and second substrates 101 and 102 may be in the form of a flexible film. In addition, the first and second substrates 101 and 102 may be made of a light-transmitting material so that the touch sensing apparatus 100 may be provided on the display surface of the display apparatus.

The first and second insulating layers 130 may be adhesive materials so as to be combined with the second substrate 102 and the cover substrate 103, respectively, without a separate adhesive layer.

The plurality of first planar electrodes 111 and the plurality of second planar electrodes 121 are for sensing a touch in an electrostatic capacity manner.

That is, when a touch occurs, capacitance changes in a region where the first and second planar electrodes 111 and 121 mutually intersect with each other. Therefore, the touch position can be sensed based on the intersection point of the first planar electrode 111 and the second planar electrode 111, 121 whose potential varies.

The plurality of first loop electrodes 112 and the plurality of second loop electrodes 122 are for sensing a touch by an electromagnetic induction method.

That is, the first and second loop electrodes 112 and 122, which are adjacent to each other within a critical distance from an electronic pen (not shown) that emits a predetermined magnetic field signal, induce electromagnetic induction based on a magnetic field signal received from an electronic pen do. Therefore, the touch position can be sensed based on the intersection of the first and second loop electrodes 112 and 122 and the sensed current intensity at which the current is sensed.

The first and second electrode pattern layers 110 and 120 may be formed of a transparent conductive material. This is to minimize image quality degradation when the touch sensing device 100 is mounted on the display surface of the display device.

As described above, according to the first embodiment of the present invention, a plurality of first planar electrodes 111 and a plurality of first loop electrodes 112 are formed on the same layer, that is, on the first substrate 101, (110). The plurality of second planar electrodes 121 and the plurality of second loop electrodes 122 are formed of the same layer, that is, the second electrode pattern layer 120 on the second substrate 102.

In other words, the touch sensing apparatus 100 according to the first embodiment of the present invention includes, in addition to the two substrates sandwiching the plurality of first and second planar electrodes 111 and 121, But does not separately include two substrates sandwiching the second loop electrodes 112 and 122. Thus, the two substrates separately provided at the lower portion and the adhesive layer for bonding the two substrates to the upper two substrates can be removed, which can be advantageous for thinning.

In addition, the substrate and the adhesive layer separately provided at the lower part reduce the strength of the magnetic field signal transmitted from the electronic pen. The first and second loop electrodes 112 and 122 have a plurality of The first and second planar electrodes 111 and 121 are formed on the same layer. As a result, the first and second loop electrodes 112 and 122 can receive the magnetic field signal of a higher intensity than the conventional one, so that the degree of touch sensitivity of the electromagnetic induction method can be improved.

As shown in FIG. 4, a method of fabricating the touch sensing apparatus 100 according to the first embodiment includes forming a first electrode pattern layer on a first substrate (S110), forming a first insulating layer A step S111 of forming a second electrode pattern layer on the second substrate S120, a step S121 of forming a second insulating layer S121, a step S130 of bonding a second substrate on the first insulating layer S130 ), And forming a cover substrate (S140).

Referring to FIGS. 2 and 3, according to the first embodiment, a conductive layer on the first substrate 101 is patterned to include a plurality of first planar electrodes 111 and a plurality of first loop electrodes 112 The first electrode pattern layer 110 is formed. (S110) Subsequently, an insulating material is applied to the entire surface of the first substrate 101 to form a first insulating layer 130 covering the first electrode pattern layer 110. (S111)

A conductive layer on the second substrate 102 is patterned to form a second electrode pattern layer 120 including a plurality of second planar electrodes 121 and a plurality of second loop electrodes 122. [ A second insulating layer 140 covering the second electrode pattern layer 120 is formed by applying an insulating material to the entire surface of the second substrate 102. (S121)

At this time, the second electrode pattern layer 120 and the second insulating layer 140 are formed by using a separate manufacturing apparatus (S120, S121). The first electrode pattern layer 110 and the first insulating layer 130 may be formed at the same time as steps (S110, S111).

As described above, the first substrate 101 including the first electrode pattern layer 110 and the first insulating layer 130 and the first substrate 101 including the second electrode pattern layer 120 and the second insulating layer 140 The second substrate 102 is connected to the first insulating layer 130. The second substrate 102 is then connected to the first insulating layer 130. [ At this time, the first insulating layer 130 and the second substrate 102 may be bonded to each other using an adhesive layer separately provided therebetween, or may be bonded to each other using the adhesive property of the first insulating layer 130, .

Then, the cover substrate 103 is formed on the second insulating layer 140. At this time, the second insulating layer 140 and the cover substrate 103 may be bonded to each other using an adhesive layer separately provided therebetween, or may be bonded to each other using the adhesive property of the second insulating layer 140 .

The first and second electrode pattern layers 110 and 120 may be formed on the first and second substrates 101 and 102 and may be formed on the first insulating layer 130 And the second substrate 102 is bonded. That is, the first and second electrode pattern layers 110 and 120 are mutually insulated by the first insulating layer 130 and the second substrate 102 between them.

Alternatively, one substrate may be interposed between the first and second electrode pattern layers 110 and 120, and the first and second electrode pattern layers 110 and 120 may be insulated from each other by a single substrate.

A plurality of first planar electrodes 111 and a plurality of first loop electrodes 112 are formed on the same layer together (S110), and a plurality of second planar electrodes 121 and a plurality of second loop electrodes 122 ) Are formed together in the same layer, the number of processes can be reduced, the processing time can be shortened, and the manufacturing cost can be reduced.

Hereinafter, a touch sensing apparatus and a manufacturing method thereof according to a second embodiment of the present invention will be described with reference to FIGS. 5 to 7. FIG.

5 and 6, the touch sensing apparatus 100 'according to the second embodiment of the present invention includes a first substrate 101, a first substrate 101, A first electrode pattern layer 110 including a plurality of first planar electrodes 111 and a plurality of first loop electrodes 112 formed on a first surface of a first substrate 101 A first insulating layer 130 formed over the first electrode pattern layer 110 and covering the first electrode pattern layer 110 is formed on the other surface of the first substrate 101 (the upper surface of the first substrate 101 in FIGS. 5 and 6) A second electrode pattern layer 120 including a plurality of second planar electrodes 121 and a plurality of second loop electrodes 122 formed on the other surface of the first substrate 101, And a second insulating layer 140 covering the first insulating layer 120. The second electrode layer 140 may further include a cover substrate 103 formed on the second insulating layer 140 and protecting the first and second electrode pattern layers 110 and 120.

According to the second embodiment, only the first substrate 101 is interposed between the first and second electrode pattern layers 110 and 120. In other words, unlike the first embodiment, since the second substrate 102 is not included, it can be advantageously reduced in thickness.

As described above, the touch sensing apparatus 100 'according to the second embodiment removes the second substrate 102, and the second electrode pattern layer 120 and the second electrode pattern layer 120 are formed on the other surface of the first substrate 101, 2 insulating layer 140 is formed. Therefore, a duplicate description will be omitted in the following.

7, the manufacturing method of the touch sensing apparatus 100 'according to the second embodiment includes forming a first electrode pattern layer on one side of a first substrate S110, forming a first insulation layer (S120 ') forming a second electrode pattern layer on the other surface of the first substrate, forming a second insulating layer on the entire other surface of the first substrate (S121'), And forming a substrate (S140 ').

The method of fabricating the touch sensing device 100 'according to the second embodiment of the present invention includes the steps of forming a first electrode pattern layer 110 and a first insulating layer 130 on one surface of a first substrate 101 Next, steps S110 and S111 are performed to form a second electrode pattern layer 120 and a second insulating layer 140 on the other surface of the first substrate 101 (S120 ', S121'), Except that it does not include a step (S130 in FIG. 4) of attaching a separate substrate (second substrate 102 of FIG. 2 and FIG. 3) , And duplicate description will be omitted below.

1 illustrates only the first and second planar electrodes 111 and 121 having a rectangular shape. However, the first and second planar electrodes 111 and 121 are only rectangular shapes, and the first and second planar electrodes 111 and 121 are not rectangular Lt; / RTI > Illustratively, each of the first and second planar electrodes 111 and 121 may be in the form of rhombuses arranged in parallel in either direction and their both sides connected to each other. In this case, the first and second loop electrodes 112 and 122 may be formed on the outer sides of the first and second planar electrodes 111 and 121, respectively.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Will be clear to those who have knowledge of.

100, 100 ': touch sensing device 101: first substrate
110: first electrode pattern layer
111: first plane electrode 112: first loop electrode
112a, 112b: a first input terminal and a first output terminal
120; The second electrode pattern layer
121: second plane electrode 122: second loop electrode
122a, 122b: a second input terminal and a second output terminal
130: first insulation layer 140: second insulation layer
102: second substrate 103: cover substrate

Claims (11)

A first electrode pattern layer formed on one surface of the first substrate and including a plurality of first planar electrodes corresponding to the first direction and a plurality of first loop electrodes surrounding the outer peripheries of the plurality of first planar electrodes; And
A plurality of second planar electrodes insulated from the first electrode pattern layer and corresponding to a second direction crossing the first direction and a plurality of second loop electrodes And a second electrode pattern layer including the second electrode pattern layer. The method according to claim 1,
A first input terminal and a first output terminal connected to both ends of each of the plurality of first loop electrodes; And
Further comprising a second input terminal and a second output terminal connected to both ends of each of the plurality of second loop electrodes,
The first input terminal and the first output terminal of each of the plurality of first loop electrodes are arranged in parallel in a direction parallel to one side edge of the first substrate,
Wherein the second input terminal and the second output terminal of each of the plurality of second loop electrodes are arranged in parallel in a direction parallel to the other edge of the first substrate. The method according to claim 1,
A first insulating layer formed on one surface of the first substrate and covering the first electrode pattern layer; And
And a second substrate formed on the first insulating layer,
Wherein the second electrode pattern layer is formed on one surface of the second substrate. The method of claim 3,
And a second insulating layer formed on one surface of the second substrate and covering the second electrode pattern layer. The method according to claim 1,
Wherein the second electrode pattern layer is formed on the other surface of the first substrate. 6. The method of claim 5,
A first insulating layer formed on one surface of the first substrate and covering the first electrode pattern layer; And
And a second insulating layer formed on the entire other surface of the first substrate and covering the second electrode pattern layer. Forming a first electrode pattern layer on the first substrate, the first electrode pattern layer including a plurality of first planar electrodes corresponding to the first direction and a plurality of first loop electrodes surrounding the outer peripheries of the plurality of first planar electrodes, ; And
A plurality of second planar electrodes insulated from the first electrode pattern layer and corresponding to a second direction crossing the first direction and a plurality of second loop electrodes And forming a second electrode pattern layer including the first electrode pattern layer and the second electrode pattern layer. 8. The method of claim 7,
The first electrode pattern layer may include a first input terminal and a first output terminal connected to both ends of each of the plurality of first loop electrodes,
The second input terminal and the second output terminal are connected to both ends of each of the plurality of second loop electrodes in the step of forming the second electrode pattern layer,
The first input terminal and the first output terminal of each of the plurality of first loop electrodes are arranged in parallel in a direction parallel to one side edge of the first substrate,
Wherein the second input terminal and the second output terminal of each of the plurality of second loop electrodes are arranged in parallel in a direction parallel to the other one edge of the first substrate. 8. The method of claim 7,
After the step of forming the first electrode pattern layer,
Further comprising forming a first insulating layer covering the first electrode pattern layer on one entire surface of the first substrate. 10. The method of claim 9,
In the forming of the second electrode pattern layer, the second electrode pattern layer is formed on one surface of the second substrate,
Further comprising forming a second insulating layer covering the second electrode pattern layer on one surface of the second substrate after forming the second electrode pattern layer,
Forming the first insulation layer and forming the second insulation layer, the second substrate having the second electrode pattern layer and the second insulation layer formed on the first insulation layer, ≪ / RTI > further comprising the step of: 10. The method of claim 9,
In the forming of the second electrode pattern layer, the second electrode pattern layer is formed on the other surface of the first substrate,
Further comprising the step of forming a second insulating layer covering the second electrode pattern layer on the entire other surface of the first substrate after the step of forming the second electrode pattern layer.

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