KR101259843B1 - Touch window having duoble ruoting circuit - Google Patents

Abstract

The present invention relates to a touch window, wherein the touch window includes a sensing electrode pattern layer including a patterned sensing electrode formed on a transparent window and a wiring part connected to the sensing electrode, wherein the wiring part is the And a unit wiring part connected to one end and the other end of the sensing electrode, respectively.
According to the present invention, there is provided a structure having unit wirings connected to both ends of the unit sensing electrodes of the first sensing electrode pattern or the second sensing electrode pattern of the touch window, and having wirings on both sides of the sensing area to charge for sensing. Shorten the filling time of the effect has the effect of improving the sensing performance.

Description

Touch window {Touch window having duoble ruoting circuit}

The present invention relates to a structure of a touch window that can improve sensing efficiency.

1 and 2 show the main components of such a capacitive touch panel. FIG. 1 shows a plan view of an adhesive structure of such a multilayer structure, and FIG. 2 shows a cross-sectional view taken along the X-ray of FIG. Referring to the drawings, the touch panel has a structure of an upper OCA 50 under the transparent window 10, an upper electrode layer 40, a lower OCA 30, and a lower electrode layer 20 below. In general, the lower portion is bonded to the liquid crystal panel (LCD) 60. The touch screen panel (TSP) formed by the bonding of the various layers is a connection pad (P) by cutting the upper OCA 50, the upper electrode layer (ITO) 40, the lower OCA 30 for bonding with the FPCB module. ) Is provided with a bonding area (C) is exposed.

In this case, the upper electrode layer 40 (Tx) and the lower electrode layer 20 (Rx) are disposed to be spaced apart from each other, and generally have a structure in which linear electrode patterns cross each other. Of course, as shown in FIG. 3, even when formed in separate layers spaced apart from each other, various pattern shapes may be implemented and arranged in a plane like the upper electrode layer 40 and the lower electrode layer 20. However, as shown in this sensing electrode, one wiring part is connected to each sensing electrode. That is, as shown in FIG. 3, one wiring 41 is connected to one pattern of the upper electrode 40, and the other wiring 42 is allocated to and connected to the upper electrode disposed thereunder, respectively. In addition, one wire 21 is connected to the lower electrode 20. Of course, the same applies to the case of the linear electrode.

However, such a unidirectional wiring structure causes a delay in the charging time of the charge for sensing in the sensing electrode itself. In particular, as the circuit becomes finer and the resolution becomes higher, the R (resistance) component of the circuit increases. There is a problem that is further delayed during charging.

The present invention has been made to solve the above-described problem, an object of the present invention has a structure having a unit wiring connected to both ends of the unit sensing electrode of the first sensing electrode pattern or the second sensing electrode pattern of the touch window, respectively. By providing wirings on both sides of the sensing area, the present invention provides a touch window structure that can shorten the charging time of the charge for sensing and improve the sensing performance.

As a means for solving the above problems, the present invention is a sensing electrode pattern layer including a patterned sensing electrode formed on a transparent window; And a wiring part connected to the sensing electrode, wherein the wiring part can provide a touch window including unit wiring parts connected to one end and the other end of the sensing electrode, respectively.

In addition, the unit wiring unit according to the present invention, the first substrate and the second substrate which is patterned on one surface of the transparent window via an adhesive material layer, and one surface of the base substrate and the other surface opposite to the one surface It is possible to provide a touch window connected to one end and the other end of the sensing electrode pattern, respectively.

In addition, the unit wiring part may be bonded to the transparent window via a first adhesive material layer, and the first sensing electrode pattern layer having a sensing electrode formed on one surface thereof, and the second bonding portion to the other surface of the first sensing electrode pattern layer formed thereon. It is adhered via a material layer, it is possible to provide a touch window connected to one end and the other end to the second sensing electrode pattern layer having a sensing electrode formed on one surface.

In addition, the unit wiring part may be provided directly on the transparent window and provide a touch window connected to one end and the other end of the sensing electrodes of the first and second sensing electrode pattern layers that are patterned to be insulated from each other.

Alternatively, unlike the above-described example, the unit wiring part may include a base substrate bonded to one surface of the transparent window via an adhesive material layer, and directly formed on one side of the base substrate and patterned to be insulated from each other. The touch window may be connected to one end and the other end of the sensing electrodes of the first and second sensing electrode pattern layers, respectively.

In any of the above structures, the unit wiring unit according to the present invention may be connected to one end and the other end of the second sensing electrode pattern, and the first sensing electrode pattern may be connected to only one end or the other end of the second sensing electrode pattern. have.

In addition, in the above-described structure, the sensing electrode and the wiring part of the first and second sensing electrode pattern layers may be formed of the same material, and in this case, the sensing electrode and the wiring part may be formed of a conductive material. .

In addition, the first sensing electrode pattern layer or the second sensing electrode pattern layer, each unit sensing electrode is formed in a mesh structure, the mesh structure, the outer line pattern to form an outer portion of the unit pattern; and the outside And an inner line pattern connecting the inside of the line pattern in a cross structure.

In addition, the first sensing electrode pattern layer or the second sensing electrode pattern layer of the touch window according to the present invention may be disposed so that a part of each overlap each other, and either one of the first sensing electrode pattern or the second sensing electrode pattern. May be manufactured to have a curvature pattern having periodicity. In this case, in the curvature pattern having the periodicity, the linear sensing electrode pattern may be disposed between the nth curvature and the (n + 1) th curvature.

According to the present invention, there is provided a structure having unit wirings connected to both ends of the unit sensing electrodes of the first sensing electrode pattern or the second sensing electrode pattern of the touch window, and having wirings on both sides of the sensing area to charge for sensing. Shorten the filling time of the effect has the effect of improving the sensing performance.

In addition, there is an advantage that it is possible to easily implement a large-sized sensor while solving the problem of sensing charge (charing delay) of the unidirectional wiring structure of the sensing electrode.

Furthermore, one of the first sensing electrode pattern and the second sensing electrode pattern of the touch window has a spiral curvature pattern for the sensing electrode of the connection structure of both wirings, and the other is formed in a structure having a straight shape. In addition, it is possible to improve the optical characteristics as well as to maximize the sensing efficiency by widening the overlapping sensing area.

In addition, with respect to the sensing electrode of the connection structure of both wires, the pattern shape of the sensing electrode to have a mesh structure, thereby controlling the pattern shape, line width, and cross structure of the mesh structure to maximize the transmission efficiency of the electric signal. have.

In addition, in the case of applying a process of forming and patterning a conductive material on an optical substrate instead of an ITO material to form an effective portion and a wiring portion at the same time, ITO is not used to reduce manufacturing costs and to reduce film hardness without having to reduce film hardness. It also has the effect of providing a process that allows for degrees of freedom.

1 and 2 are a plan view and a main sectional view showing the structure of a conventional touch window, Figure 3 is a conceptual diagram showing a single circuit pattern of the sensing electrode.
4 is a cross-sectional view of an embodiment according to the present invention, and FIGS. 5 to 8 illustrate various embodiments according to the pattern change of the sensing electrode according to the present invention.
9 and 10 are cross-sectional conceptual views showing an embodiment of another structure of the touch window according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description with reference to the accompanying drawings, the same reference numerals denote the same elements regardless of the reference numerals, and redundant description thereof will be omitted. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

1. First Embodiment

4 illustrates a cross-sectional conceptual view of a touch window according to the present invention. 5 is a plan view illustrating a structure of forming a sensing electrode according to the present invention.

4 and 5, the touch window according to the present invention includes a sensing electrode pattern layer including a patterned sensing electrode formed on a transparent window and a wiring part connected to the sensing electrode, wherein the wiring part is the And a unit wiring part connected to one end and the other end of the sensing electrode, respectively.

4 is a cross-sectional view of a touch window according to the present exemplary embodiment, in which a wire part is connected to both ends of a unit sensing electrode. That is, it is formed in a structure including a base substrate (130, 110) and the sensing electrodes 132, 112 patterned on one surface of the base substrate or the other surface facing the one surface. That is, the first sensing electrode pattern layer, which is bonded to the transparent window 100 through the first adhesive material layer 140, and has a sensing electrode pattern 132 formed on one surface thereof, of the first sensing electrode pattern layer. The second adhesive material layer 120 may be bonded to the other surface via a second adhesive material layer 120, and may include a second sensing electrode pattern layer having a sensing electrode pattern 112 formed on one surface thereof.

In this structure, referring to FIG. 5, the first and second sensing electrode pattern layers described above will be described. Each of the first sensing electrode pattern 132 and the second sensing electrode pattern 112 may have different base materials ( The first and second sensing electrode patterns may be formed to be spaced apart from each other, and the first and second sensing electrode patterns may be formed in a structure in which overlapping regions Q1 are formed on a plan view in an arrangement spaced apart from each other. That is, as shown in FIG. 5, the second sensing electrode pattern Rx1 formed to be spaced apart from the first sensing electrode pattern Tx1 may be formed in a straight line to overlap each other.

In particular, the respective wiring portions are connected to both ends of the unit sensing electrode patterns ie Rx1, Rx2, and Rx3 constituting the sensing electrode pattern layer according to the present invention. That is, a unit wiring portion of a1 and a2 is connected to both ends of Rx1, and a unit wiring portion of b1 and b2 is connected to Rx2. That is, by having a structure having unit wirings connected to both ends of the unit sensing electrodes, the wirings are provided on both sides of the sensing region, thereby shortening the filling time of charge for sensing, thereby improving sensing performance. Of course, a structure in which wiring portions are also connected to both ends of Tx1, Tx2, and Tx3 constituting the first sensing electrode pattern may be implemented. FIG. 6 is a plan view of an actual implementation of a double routing structure in which wiring portions are formed at both ends of the second sensing electrode patterns Rx1, Rx2, and Rx3, respectively.

In the present exemplary embodiment, the unit sensing electrode pattern is illustrated as a straight line, but the gist of the present invention may be applied to various pattern shapes such as the structure of FIG. 3.

2. Second Embodiment

7 is a conceptual view illustrating an embodiment in which the arrangement of the sensing electrodes forming the sensing electrode pattern layers of FIGS. 4 and 5 is different. Hereinafter, an embodiment in which the sensing electrode pattern layer is configured as shown in FIG. 7 in the touch window structure of FIG. 4 will be described.

In the structure of the touch window of FIG. 4, that is, when the first and second sensing electrode patterns spaced apart from each other are implemented to overlap, the present embodiment is particularly embodied as one of the sensing electrode patterns as a curvature pattern. Of course, in this case, the gist of the present invention in which the wiring units are connected to both ends of each unit sensing pattern is equally applied.

That is, in the sensing electrode pattern layer in this embodiment, the two sensing electrode pattern layers are disposed opposite to each other with mutual spacing, and the shapes of the arranged sensing patterns overlap each other, and any one of them has a curvature having a predetermined periodicity . That is, as shown in FIG. 7, the first sensing electrode pattern Tx1 may have a curvature pattern having a certain periodicity, and the second sensing electrode patterns Rx1 formed to be spaced apart may be formed in a straight line. That is, in the structure of FIG. 4, the first sensing electrode patterns 132 and the second sensing electrode patterns 112 are formed on different base substrates 130 and 110, respectively, and spaced apart from each other. The first sensing electrode pattern 132 has a structure of forming a curvature pattern, and the second sensing electrode pattern 112 is formed in a straight line so that the overlapping regions (Q2 in FIG. 7) are not rectangular or square. It can be formed wider than the overlap area of five.

In the present invention, the curvature pattern is defined as including all non-linear patterns having a certain periodicity and a floor and a valley shape. Particularly preferably, as shown in Figure 5, the floor and the valley (S1, S2, S3) may be provided with a sine-type curvature or cosine-shaped curvature pattern is periodically repeated, in addition to this structure, the zigzag straight bending It may be formed in a structure that is repeated periodically. A and B segments of FIG. 5 are imaginary segments passing through the vertices and valleys of each curvature pattern.

In particular, it is preferable that the curvature pattern having the periodicity is formed such that a linear sensing electrode pattern is disposed between the n-th curvature portion and the (n + 1) -th curvature portion, where n is a natural number of 1 or more. That is, referring to the structure shown in FIG. 5, a straight second sensing electrode pattern Rx1 is disposed between the first curvature S1 and the second curvature S2 of the first sensing electrode pattern Tx1. This is preferred. Of course, in the present embodiment, the first sensing electrode pattern is a curvature pattern. Alternatively, the first sensing electrode pattern may be a linear pattern, and the second sensing electrode pattern may be a curvature pattern. In addition, the angles? ₁ and? _{2 at} which the first sensing electrode pattern Tx1 and the second sensing electrode pattern Rx1 overlap can be formed at an acute angle or an obtuse angle instead of the right angle.

In addition, particularly preferably, when the curvature pattern according to the present invention has a sinusoidal or cosine-type periodicity, the second sensing electrode pattern crosses the first and second curvature portions and passes through the 1/2 point, that is, the inflection point point. More preferably. Such an arrangement structure maximizes the cross region Q2 to improve the touch sensing efficiency, as well as to improve the visibility by forming the optical characteristic more transparently than the arrangement of the conventional orthogonal structure. In the structure shown in FIG. 7, the first and second adhesive insulating layers may be OCA films, and the first and second sensing electrode pattern layers may be formed of indium-tin oxide (ITO) or IZO (base oxide) on a base substrate. The electrode pattern may be formed of any one of indium zinc oxide) and zinc oxide (ZnO).

Alternatively, unlike the above-described structure, the wiring portions 111 and 131 are formed to connect the second and first sensing electrode patterns 112 and 132, respectively, and the Ag, The process of simultaneously forming the wiring portion and the sensing electrode pattern using conductive materials such as Al and Cu may be used. The pattern shape of the electrode can be seen by using the ITO material, and the manufacturing cost increases because the ITO material is an expensive material, and the double-sided ITO material on one single base substrate due to the decrease in the film hardness of the ITO material. Solving the manufacturing problem that is difficult to realize the structure having a layer, instead of the ITO material, the conductive material is formed and patterned on the optical base to form the effective part and the wiring part at the same time, thereby reducing the manufacturing cost and reducing the film hardness. It also has the effect of providing a process that can realize various degrees of freedom of design.

3. Example

FIG. 8 is a third embodiment, in which the same applies to the debrauting structure for forming respective wirings on both ends of the sensing electrodes as in the first and second embodiments described above, but the shape of the sensing electrode itself is the same. There is a difference in the implementation.

The sensing electrode according to the present exemplary embodiment has a structure in which a plurality of unit patterns are connected to each other, and a double routing structure in which wiring portions a1 and a2 are connected to both ends of each sensing electrode, respectively.

In particular, the unit pattern is characterized in that formed in a mesh structure. The 'mesh structure' in the present embodiment is defined as a structure including an outer line pattern M1 forming an outer portion of the unit pattern and an inner line pattern M2 connecting the inner portion of the outer line pattern in an intersecting structure. In particular, the outer line pattern M1 may be formed in various shapes such as a circular shape and an elliptic shape in addition to the polygonal structure, and may be formed of a conductive material in a line shape.

In addition, the inner line pattern M may be formed as a set of lines connecting the outer line pattern M2 internally in a cross structure, as shown in the figure. That is, a plurality of patterns of a linear structure may be formed so as to intersect with each other to form a network structure. Of course, not only a linear structure but also various curved structures can be applied. The sensing electrode of the mesh structure according to the present invention is formed into a polygonal mesh shape with a line extending from a conductive material having a thickness of 3 占 퐉 to 10 占 퐉 so that an electric signal can be transmitted.

 In this case, the efficiency of signal transmission can be greatly improved by controlling the crossing angle and controlling the line width in the crossing structure of the internal pattern line M2 forming the mesh structure. In addition, since the process of simultaneously fabricating the wiring part and the sensing electrode pattern using the same material is performed, not only the efficiency of the process can be improved, but also the ITO material is not used, and the process cost can be greatly reduced. Therefore, the efficiency of the signal transmission from the reduction of the material cost and the process ratio is promoted to the mesh structure, thereby realizing the high efficiency product. The conductive material used for the sensing electrode and the wiring used in the present invention may be various materials such as Ag, Cu, and Al.

That is, in the third exemplary embodiment, Ag, Al are connected to the wiring parts 111 and 131 connecting the second and first sensing electrode patterns 112 and 132, respectively, instead of forming an electrode using a transparent electrode material. The process of simultaneously forming the wiring portion and the sensing electrode pattern using a conductive material such as Cu or Cu may be used. The pattern shape of the electrode can be seen by using the ITO material, and the manufacturing cost increases because the ITO material is an expensive material, and the double-sided ITO material on one single base substrate due to the decrease in the film hardness of the ITO material. Solving the manufacturing problem that is difficult to realize the structure having a layer, instead of the ITO material, the conductive material is formed and patterned on the optical base to form the effective part and the wiring part at the same time, thereby reducing the manufacturing cost and reducing the film hardness. It also has the effect of providing a process that can realize various degrees of freedom of design.

4. Fourth embodiment

The structure of the touch window implementing the sensing electrode pattern layers of the structures of the first to third embodiments described above may be differently manufactured in the shape as shown in FIG. 9.

That is, unlike the structure of FIG. 4, there is a structural difference in that the sensing electrode 232 pattern is formed on both surfaces of the base substrate 230. In addition, a wiring unit 231 connecting both ends of the sensing electrode in a double routing structure is formed. The sensing electrode 232 pattern may be applied to the structure, deformation range, and material described above in the first to third embodiments, and the sensing electrode and the wiring part may be simultaneously patterned to form a conductive material. In addition, it may be configured to further include a protective film 210 for protecting the sensing electrode pattern of the lower surface of the base substrate 230.

5. Fifth Embodiment

Referring to FIG. 10, unlike the other exemplary embodiment described above, the transparent window 300 is formed, the sensing electrode pattern 312 is patterned on the end surface of the base substrate 310, and the wiring unit ( 311 is formed simultaneously with the sensing electrode pattern. Of course, the gist of connecting the wiring parts to both ends of the sensing electrode in the structure of forming the sensing electrode pattern 312 and the double routing structure is the same as described above.

However, since the first and second sensing electrode patterns are implemented on the same plane, the first sensing electrode layer for determining the first axis (eg, X axis) component of the contact is patterned on one surface, and Preferably, the second sensing electrode layer for determining a second axis (eg, Y-axis) component is patterned by implementing an arrangement insulated from the first sensing electrode layer.

Of course, in FIG. 10, a configuration in which the sensing electrode pattern layer is formed on the same plane on a separate base substrate 310 is described as an example. However, without the base substrate 310, the sensing electrode is directly formed on one surface of the transparent window 300. It is also possible to form the pattern through the deposition and coating process. Of course, in this case, the sensing electrode and the wiring pattern according to the present invention are simultaneously formed of the same material, and the sensing electrode is the same as the above-described mesh structure.

The touch window according to the present invention can be attached to various display devices. That is, the display device may be an organic light emitting device, a plasma display panel, or the like, as well as a liquid crystal display. In this case, in order to prevent noise components generated by driving the display device from being transmitted to the touch sensing panel (TSP) to cause a malfunction of the touch sensing panel, a shielding layer may be selectively disposed between the touch sensing panel and the display device. You can also place

The wiring unit is connected to a control unit for determining the number and location of the touch and controlling the operation of the touch sensing panel. In this case, a flexible printed circuit board (FPCB) is used to cope with various mechanical shapes inside the electronic device. The circuit pattern formed on the printed circuit board may be connected to the connection pad to receive a detection signal, and determine whether or not a contact occurs and a location where the contact occurs using the received detection signal.

In the foregoing detailed description of the present invention, specific examples have been described. However, various modifications are possible within the scope of the present invention. The technical idea of the present invention should not be limited to the embodiments of the present invention but should be determined by the equivalents of the claims and the claims.

100, 200, 300: transparent window
110, 130, 230, and 310:
112, 132, 212, 312: sensing electrodes
120, 140, 220, 320: an adhesive insulating layer

Claims (11)

delete A base substrate bonded to one surface of the transparent window via an adhesive material layer;
A first sensing electrode pattern layer including a first sensing electrode patterned on one surface of the base substrate;
A second sensing electrode pattern layer including a second sensing electrode patterned on the other surface opposite to the one surface; And
And a wiring part including unit wiring parts connected to one end and the other end of the first sensing electrode and the second sensing electrode, respectively.
Each unit sensing electrode has a mesh structure in the first sensing electrode pattern layer or the second sensing electrode pattern layer.
The mesh structure may include: an outer line pattern forming an outer portion of the unit sensing electrode; and
An inner line pattern connecting the inside of the outer line pattern with a cross structure;
Some of the first sensing electrode pattern layer and the second sensing electrode pattern layer are disposed to overlap each other,
Any one of the first sensing electrode and the second sensing electrode has a curvature pattern having a periodicity,
The first sensing electrode or the second sensing electrode of the mesh structure transmits an electric signal by forming a line leading to a conductive material of 3 μm to 10 μm into a polygonal mesh shape,
The wiring window and the first and second sensing electrode pattern layers are made of the same material at the same time, the touch window.
A first sensing electrode pattern layer bonded to the transparent window via a first adhesive material layer and having a first sensing electrode formed on one surface thereof;
A second sensing electrode pattern layer bonded to the other surface of the first sensing electrode pattern layer through a second adhesive material layer, and having a second sensing electrode formed on one surface thereof;
And a wiring part including unit wiring parts connected to one end and the other end of the first sensing electrode and the second sensing electrode, respectively.
Each unit sensing electrode has a mesh structure in the first sensing electrode pattern layer or the second sensing electrode pattern layer.
The mesh structure may include: an outer line pattern forming an outer portion of the unit sensing electrode; and
An inner line pattern connecting the inside of the outer line pattern with a cross structure;
Some of the first sensing electrode pattern layer and the second sensing electrode pattern layer are disposed to overlap each other,
Any one of the first sensing electrode and the second sensing electrode has a curvature pattern having a periodicity,
The first sensing electrode or the second sensing electrode of the mesh structure transmits an electric signal by forming a line leading to a conductive material of 3 μm to 10 μm into a polygonal mesh shape,
The wire window and the first and second sensing electrode pattern layer is made of the same material at the same time, the touch window.
First and second sensing electrode pattern layers formed directly on the transparent window and including first and second sensing electrodes patterned to be insulated from each other; And
And a wiring part including unit wiring parts connected to one end and the other end of the first sensing electrode and the second sensing electrode, respectively.
Each unit sensing electrode has a mesh structure in the first sensing electrode pattern layer or the second sensing electrode pattern layer.
The mesh structure may include: an outer line pattern forming an outer portion of the unit sensing electrode; and
An inner line pattern connecting the inside of the outer line pattern with a cross structure;
Some of the first sensing electrode pattern layer and the second sensing electrode pattern layer are disposed to overlap each other,
Any one of the first sensing electrode and the second sensing electrode has a curvature pattern having a periodicity,
The first sensing electrode or the second sensing electrode of the mesh structure transmits an electric signal by forming a line leading to a conductive material of 3 μm to 10 μm into a polygonal mesh shape,
The wire window and the first and second sensing electrode pattern layer is made of the same material at the same time, the touch window.
A base substrate bonded to one surface of the transparent window via an adhesive material layer;
First and second sensing electrode pattern layers formed directly on one surface of the base substrate and including first and second sensing electrodes patterned to be insulated from each other; And
And a wiring part including unit wiring parts connected to one end and the other end of the first sensing electrode and the second sensing electrode, respectively.
Each unit sensing electrode has a mesh structure in the first sensing electrode pattern layer or the second sensing electrode pattern layer.
The mesh structure may include: an outer line pattern forming an outer portion of the unit sensing electrode; and
An inner line pattern connecting the inside of the outer line pattern with a cross structure;
Some of the first sensing electrode pattern layer and the second sensing electrode pattern layer are disposed to overlap each other,
Any one of the first sensing electrode and the second sensing electrode has a curvature pattern having a periodicity,
The first sensing electrode or the second sensing electrode of the mesh structure transmits an electric signal by forming a line leading to a conductive material of 3 μm to 10 μm into a polygonal mesh shape,
The wire window and the first and second sensing electrode pattern layer is made of the same material at the same time, the touch window.
delete delete delete delete delete The method according to any one of claims 2 to 5,
The curvature pattern having the periodicity may include:
A touch window in which a linear sensing electrode pattern is disposed between the nth curvature and the (n + 1) th curvature.

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