KR20140011113A - Single layer touch screen with dual connecting circuit and display comprising the same - Google Patents

Abstract

Disclosed are a single layer touch screen with a dual connection circuit unit and a display including the same. In a single layer touch screen including a plurality of sensing electrodes formed on an upper part of a substrate and a plurality wire electrodes formed by being extended from the sensing electrodes, the single layer touch screen according to one embodiment of the present invention comprises: a first connection circuit unit formed on one side of the substrate; and a second connection circuit unit installed on the other side of the substrate, wherein a part of the plurality of wire electrodes is connected to the first connection circuit unit and the other part is connected to the second connection circuit unit.

Description

TECHNICAL FIELD [0001] The present invention relates to a single-layer touch screen having a dual connection circuit, and a display including the single-

The present invention relates to a monolithic touch screen and a monolithic touch screen, and more particularly to a monolithic touch screen having dual connection circuitry and a display comprising the same.

BACKGROUND ART [0002] A touch panel (a touch panel or a touch screen) is an input device mounted on a surface of a display to convert a physical contact of a user's finger or the like into an electrical signal to operate the product. It can be widely applied to various display devices, Are widely used in flat panel display devices, various mobile devices, smart phones, and tablet PCs in accordance with the trend of pursuing an intuitive interface.

However, when a conventional touch panel is coupled to a display, a display panel and a touch panel are separately designed and coupled to each other. Accordingly, attempts have been actively made to realize a structure in which a touch screen and a display panel are integrated.

On the other hand, in the conventional touch screen, the sensing electrodes for sensing a touch signal and the wiring electrodes extending from the sensing electrodes to transmit to the controller IC (connection circuit) are formed. At this time, since the wiring electrodes are formed along the rim of the substrate, there has been a problem that the width of the bezel is widened to deteriorate the beauty of the product design. Therefore, attempts to reduce the width of the bezel have also been made steadily.

Embodiments of the present invention provide a single-layer touch screen in which a touch screen is composed of a single film and a dual connection circuit is provided to minimize the width of a bezel.

In addition, a display in which the above-described single-layer touch screen is integrated into a display panel is further provided.

According to an aspect of the present invention, there is provided a single-layer touch screen including a plurality of sensing electrodes formed on a substrate and a plurality of wiring electrodes extending from the sensing electrodes, ; And a second connection circuit part provided on the other side of the substrate, wherein a part of the plurality of wiring electrodes is connected to the first connection circuit part and the other part is connected to the second connection circuit part. A touch screen may be provided.

The sensing electrode may include a pair of first sensing electrodes electrically connected to each other, a pair of first sensing electrodes continuously arranged in the horizontal direction to form a first sensing electrode unit, A second sensing electrode disposed between the pair of first sensing electrodes so as not to overlap with the first sensing electrode, and a plurality of second sensing electrode units arranged in a longitudinal direction so as to constitute one longitudinal axis, The electrode includes a plurality of first wiring electrode portions extending from the pair of first sensing electrodes of the first sensing electrode portion and connected to any one of the first connection circuit portion and the second connection circuit portion, And a second wiring electrode portion formed to connect the second sensing electrodes of the sensing electrode portion together and connected to the second connection circuit portion, wherein the first wiring electrode portion and the second wiring electrode portion It can be characterized as being arranged not to contact.

The display device may further include a third wiring electrode portion connecting the first connection circuit portion and the second connection circuit portion.

If the distance between the first sensing electrode portion and the first connection circuit portion is smaller than the distance between the first sensing electrode portion and the second connection circuit portion, the first wiring electrode portion may be connected to the first connection electrode portion And connected to each other.

The gap between the first wiring electrode portions may be narrower than the gap between the first wiring electrode portion and the second wiring electrode portion adjacent to the first wiring electrode portion.

The sensing electrode and the wiring electrode are formed in a two-layer structure in which the lower layer is formed of a transparent conductive material and the upper layer is formed of a metal. The transparent conductive material may include indium tin oxide (ITO), indium zinc oxide (IZO) (Al-doped Zinc Oxide), Ga-doped Zinc Oxide (GZO), propylene dioxythiophene, poly (3,4-ethylenedioxythiophene), carbon nano tube or grapheme, The metal may be any one of silver (Ag), aluminum (Al), copper (Cu), chromium (Cr), nickel (Ni), and molybdenum (Mo) or an alloy thereof.

In the first and second connection circuit portions, the connection terminals to which the first wiring electrode portion and the second wiring electrode portion are connected are arranged in two or more rows, and the first and second connection circuit portions are provided with a plurality of And a multilayer printed circuit board composed of two or more circuit layers connectable by dividing the connection terminals into a horizontal axis or a vertical axis.

According to another aspect of the present invention, there is provided a display including a substrate and a black matrix formed on the substrate and designating a pixel region, wherein the black matrix is formed of a conductive material, The sensing electrode and the wiring electrode of the single-layer touch screen according to the present invention can be provided.

A color forming unit disposed on the black matrix; And an overcoat layer disposed on the color forming portion.

Embodiments of the present invention can realize a single-layer touch screen in which the width of a bezel is minimized by efficiently arranging sensing electrodes and wiring electrodes in a capacitive touch panel and a dual connection circuit portion in a single film .

Further, by forming the sensing electrode and the wiring electrode in a single film, the process can be simplified and manufacturing cost can be reduced.

In addition, the black matrix, which is a component of the display panel, is formed to be conductive and used as a sensing electrode and a wiring electrode of a touch screen, and the touch screen can be integrated into a display panel by using a color forming portion as an insulating layer.

1 is a front view schematically illustrating a single-layer touch screen according to an embodiment of the present invention.
FIG. 2 is an enlarged view of the sensing electrode of FIG. 1. FIG.
3 is an enlarged view of a portion A in Fig.
4 is a view schematically showing a state in which a first sensing electrode section constituting one horizontal axis is connected to a first connection circuit section.
5 is a front view schematically illustrating a single-layer touch screen according to another embodiment of the present invention.
6 is a cross-sectional view schematically illustrating a display according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail.

The terms "upper "," on ", or "on" in this specification are intended to refer to a relative positional concept based on the attached drawings, wherein the expressions refer to the presence of other elements or layers directly As well as other layers or components therebetween may be interposed or present and the surface of the layer referred to above (particularly the surface having a three-dimensional shape) may be completely It should be noted that it is possible to include not covering. Likewise, the expression "lower," " under, "or" under "may also be understood as a relative concept of the position between a particular layer (component)

FIG. 1 is a front view schematically showing a single-layer touch screen 100 according to an embodiment of the present invention, and FIG. 2 is an enlarged view of the sensing electrode of FIG.

Referring to FIGS. 1 and 2, a single-layer touch screen 100 includes a plurality of sensing electrodes and wiring electrodes formed on a substrate 110. In this specification, the "sensing electrode" is used as a concept including the first and second sensing electrode units 121-1 to 121-8 and 122-1 to 122-8 to be described later. The "wiring electrode" is used as a concept including first, second and third wiring electrode portions 131, 132 and 133 to be described later.

The single-layer touch screen 100 includes a first connection circuit portion 140 disposed on one side of the substrate 110 and a second connection circuit portion 150 disposed on the other side of the substrate 110. That is, the single-membrane touch screen 100 includes dual-type connection circuit portions 140 and 150, hereinafter referred to as dual connection circuit portions.

Herein, the upper portion of the substrate 110 is referred to as an " upper portion ", and the lower portion of the substrate 110 is referred to as a "lower portion " In this case, the first connection circuit portion 140 may be provided on the upper portion of the substrate 110, and the second connection circuit portion 150 may be provided on the lower portion of the substrate 110.

The substrate 110 includes an active area 110a and a bezel area 110b. The active area 110a is an area for receiving a user's touch and the bezel area 110b is a border area of the active area 110a.

The sensing electrodes sense a touch position using a user's body contact or a separate touch tool (for example, a stylus pen) on a touch screen, and the wiring electrodes sense touch signals sensed by the sensing electrodes To the circuit units (140, 150).

At this time, some of the wiring electrodes may be formed to be connected to the first connection circuit unit 140, and the other part thereof may be formed to be connected to the second connection circuit unit 150, which will be described later.

The single-layer touch screen 100 according to an exemplary embodiment of the present invention can minimize the width of the bezel region 110b by not forming sensing electrodes and wiring electrodes in the bezel region 110b. To this end, the single-layer touch screen (! 00) has dual connection circuit portions (140, 150) at the upper and lower portions of the substrate 110 and wiring electrodes connected to the sensing electrodes are connected to the dual connection circuit portions (140, The width of the bezel can be significantly reduced as compared with the case of having one connection circuit portion like a screen.

Hereinafter, each configuration will be described in detail.

The substrate 110 is a substrate having transparency, and may have various mechanical strengths and flexibility. The type of the substrate 110 is not particularly limited and may be, for example, polyethylene terephthalate (PET), polycarbonate (PC), polymethylmethacrylate (PMMA), polyethylene naphthalate (PEN), polyethersulfone ), Cyclic olefin polymer (COC), TAC (triacetylcellulose) film, polyvinyl alcohol (PVA) film, polyimide (PI) film, polystyrene (PS), biaxially oriented polystyrene ; BOPS), glass or tempered glass.

The sensing electrode includes a plurality of first sensing electrode units 121-1 to 121-8 and a plurality of second sensing electrode units 122-1 to 122-8. At this time, the first sensing electrode units 121-1 to 121-8 function as an X-axis sensing line of the touch screen, and the second sensing electrode units 122-1 to 122-8 function as Y- Line.

In FIG. 1, the first sensing electrode units 121-1 through 121-8 and the second sensing electrode units 122-1 through 122-8 are arranged in 8 rows and 8 columns, respectively, But may be arranged to have various rows and columns.

However, for convenience of explanation, the first sensing electrode units 121-1 through 121-8 and the second sensing electrode units 122-1 through 122-8 are arranged in 8 rows and 8 columns as shown in FIG. 1 .

In FIG. 1, reference numeral 121-1 denotes sensing electrodes arranged in one row (upper and lower directions are referred to), 121-2 denotes 2 rows, 121-3 denotes 3 rows, , And reference numeral 121-8 denotes sensing electrodes disposed on the 8th row. Reference numeral 122-1 denotes sensing electrodes arranged in one column (reference from the left to the right), 122-2 denotes two columns, 122-3 denotes three columns, ... , And 122-8 denote sensing electrodes arranged in eight columns.

The first sensing electrode units 121-1 to 121-8 are formed by a pair of first sensing electrodes 121a electrically connected by a connection unit 121b (see FIG. 2) When one of the first sensing electrodes 121a is continuously arranged in the horizontal direction to form one horizontal axis, one of the first sensing electrode units 121-1 to 121-8 is formed.

For example, in FIG. 1, eight pairs of the first sensing electrodes 121a form one horizontal sensing axis to form one of the first sensing electrode units 121-1 through 121-8.

The second sensing electrode units 122-1 to 122-8 are configured such that the second sensing electrodes 122a are continuously arranged in the longitudinal direction. In this case, the second sensing electrode 122a may be disposed so as not to overlap with the first sensing electrode 121a, and may be disposed at an upper portion and / or a lower portion of the connection portion 121b (see FIG. 2) .

When the second sensing electrodes 122a are continuously arranged in the longitudinal direction to constitute one longitudinal axis, one of the second sensing electrode units 122-1 to 122-8 is formed. For example, in FIG. 1, nine second sensing electrodes 122a constitute one longitudinal axis to form one of the second sensing electrode units 122-1 to 122-8.

That is, the first sensing electrode units 121-1 to 121-8 and the second sensing electrode units 122-1 to 122-8 are all formed of the sensing electrodes 121a and 122a, The sensing electrode units 121-1 to 121-8 are arranged in a lateral direction while two pairs of adjacent first sensing electrodes 121a are connected by the connection unit 121b and the second sensing electrode units 122-1 to 122- 122-8 have a difference in that the second sensing electrodes 122a are arranged in the longitudinal direction.

The first sensing electrode 121a constituting the first sensing electrode units 121-1 through 121-8 and the second sensing electrode 122a constituting the second sensing electrode units 122-1 through 122-8, Is not limited to a specific shape.

For example, the first sensing electrode 121a and the second sensing electrode 122a may be formed in a rhombus, a square, a rectangle, a mesh, a mesh, or the like, . Referring to FIGS. 1 and 2, the first and second sensing electrodes 121a and 122a are formed in a mesh shape.

The wiring electrode includes a plurality of first wiring electrode portions 131 and a plurality of second wiring electrode portions 132. The first wiring electrode portion 131 functions to transmit the touch signal of the first sensing electrode portions 121-1 through 121-8 to the first connection circuit portion 140 or the second connection circuit portion 150, The second wiring electrode portion 132 functions to transmit a touch signal of the second sensing electrode portions 122-1 to 122-8 to the second connection circuit portion 150. [

For example, the first sensing electrodes 121-1 to 121-8 are arranged in a lateral direction with two pairs of adjacent first sensing electrodes 121a. In FIG. 1, eight pairs of the first sensing electrodes 121a are disposed on one horizontal axis. At this time, the first wiring electrode portions 131 are formed in each of the first sensing electrodes 121a to either the first connection circuit portion 140 or the second connection circuit portion 150, respectively.

The distance between the first sensing electrode portions 121-1 to 121-8 and the first connection circuit portion 140 is larger than the distance between the first sensing electrode portions 121-1 to 121- -8) and the second connection circuit part 150, it may be connected to the first connection circuit part 140. Otherwise, it may be formed so as to be connected to the second connection circuit part 150. [

For example, as shown in FIG. 1, the first sensing electrode units 121-1 to 121-4 disposed at the upper side with respect to the center are spaced apart from each other by a distance from the first connection circuit unit 140 to the second connection circuit unit 150 so that the first wiring electrode portion 131 is extended to the first connection circuit portion 140. In addition, Likewise, the first wiring electrode portion 131 connected to the first sensing electrode portions 121-5 to 121-8 disposed below is extended to the second connection circuit portion 150. [

The second sensing electrode units 122-1 to 122-8 are formed by sequentially arranging a plurality of second sensing electrodes 122a in the longitudinal direction. In this case, one second sensing electrode unit 122-1 The second wiring electrode portion 132-1 may be formed by connecting the plurality of second sensing electrodes 122a constituting the first wiring electrode portion 122 to the second connection circuit portion 150 together.

That is, the first sensing electrode units 121-1 through 121-8 are connected to the first connection circuit unit 140 or the second connection circuit unit 150 through the first wiring electrode unit 131, And the second sensing electrode units 122-1 to 122-8 are connected to the second connection circuit unit 150 through the second wiring electrode unit 132. [

The first wiring electrode part 131 and the second wiring electrode part 132 are disposed not to contact each other. In Fig. 3, A portion of Fig. 1 is enlarged and shown. The first wiring electrode part 131 extends to the right of the first sensing electrode 121a and the second wiring electrode part 132 extends to the left side of the second sensing electrode 122a as shown in FIG. .

The first wiring electrode portion 131 and the second wiring electrode portion 132 may be formed so as to be line-symmetrical with respect to an arbitrary reference line L (see FIG. 1) in the single-layer touch screen 100. Although the reference line L is shown at the center of the touch screen 100 in FIG. 1, the position of the reference line L is not limited thereto.

The first wiring electrode portion 131 and the second wiring electrode portion 132 are formed so as to be line-symmetrical with respect to an arbitrary reference line L. In this way, a uniform unity of the single- (The sensing electrode and the wiring electrode) so that the interference resistance is lowered, and the detection sensitivity of the single-layer touch screen 100 can be improved.

On the other hand, the interval a between the first wiring electrode portions 131 is smaller than the interval between the first wiring electrode portion 131 and the first wiring electrode portion 131 and the second wiring electrode portion 132 adjacent thereto b).

More specifically, as shown in FIG. 3, the interval a between the first wiring electrode portions 131 is larger than the interval b between the first wiring electrode portion 131 and the second wiring electrode portion 132 Can be formed narrowly.

This is because the spacing resistance is increased as the distance between the wiring electrodes connected to the different types of sensing electrodes is increased, so that the interval is adjusted to improve the detection sensitivity of the single-layer touch screen 100. For example, the interval a between the first wiring electrode portions 131 is set to be about 50% of the interval b between the first wiring electrode portion 131 and the second wiring electrode portion 132 .

On the other hand, the sensing electrode and the wiring electrode may be formed in a two-layer structure. In this case, the lower layer may be formed of a transparent conductive material, and the upper layer may be formed of a metal.

Examples of the transparent conductive material include ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), AZO (Al-doped Zinc Oxide), GZO (Ga-doped Zinc Oxide), propylene dioxythiophene, 4-ethylenedioxythiophene), a carbon nano tube or grapheme, but are not limited thereto.

Examples of the metal include, but not limited to, silver (Ag), aluminum (Al), copper (Cu), chromium (Cr), nickel (Ni), and molybdenum .

The first connection circuit unit 140 and the second connection circuit unit 150 are connected to each other through a wiring electrode. The first connection circuit unit 140 and the second connection circuit unit 150 are connected to the IC controller Respectively, to drive the touch screen.

In the single-layer touch screen 100 according to an exemplary embodiment of the present invention, the dual connection circuit portions 140 and 150 are disposed on the upper and lower sides of the substrate 110, It is a technical feature that the number is greatly reduced. Accordingly, the width of the bezel of the touch screen can be minimized.

The first and second connection circuit units 140 and 150 may be configured such that the connection terminals t connected to the first wiring electrode unit 131 and the second wiring electrode unit 132 are arranged in two or more rows. The connection terminal t is formed by bonding the ends of the first wiring electrode portion 131 and the second wiring electrode portion 132 to the substrate 110 and includes a terminal formed on a multilayer printed circuit board .

The first and second connection circuit units 140 and 150 may be provided with a multilayer printed circuit board composed of two or more circuit layers capable of connecting a plurality of connection terminals t in a horizontal axis or a vertical axis. Examples of the multilayer printed circuit board include a double-sided PCB (Printed Circuit Board) on which circuit layers are formed on both sides or an MLB (Multi Layered Board) formed by multilayer wiring.

In order to describe this in detail, FIG. 4 schematically shows a state in which the first sensing electrode portion constituting one horizontal axis is connected to the first connection circuit portion.

Referring to FIG. 4, the first sensing electrode unit constituting one horizontal axis is disposed in the horizontal direction with two pairs of adjacent first sensing electrodes 121a, and the pair of first sensing electrodes are arranged in the left A sensing electrode 121-a, a sensing electrode 121-b, a sensing electrode 121-c, and a sensing electrode 121-d, respectively.

The first, second, third and fourth sensing electrodes 121-a to 121-d constitute one first sensing electrode unit and are connected to the first wiring electrode units 131-1 to 131-4, 1 connected to the connection circuit portion 140 of the multilayer printed circuit board 160 via the connection terminals of the connection circuit portion 140. [

At this time, the connection hole 161 is electrically communicated within the multilayer printed circuit board 160. At this time, the first wiring electrode portions 131-1 to 131-4 are bonded to the connection terminal t disposed on the first connection circuit portion, and the connection terminal t is bonded to the multilayer printed circuit board 160 And may be connected to the connection hole 161 formed.

All of the connection holes 161 corresponding to a predetermined position in the multilayer printed circuit board 160 are electrically connected to each other. Therefore, when the first wiring electrode portions 131-1 through 131-4 are connected to the connection holes 161 located at specific positions, the first wiring electrode portions 131-1 through 131-4 Are electrically integrated within the multilayer printed circuit board 160 and output as a single line.

That is, in the multilayer printed circuit board 160, the sensing electrodes 121-a to 121-d are electrically integrated and output as a single line to form the first sensing electrode unit 121-1 Can function as one X-axis pattern electrode.

Although not shown in FIG. 4, the second wiring electrode portion 132, which is electrically connected to the second sensing electrode portions 122-1 to 122-8, It does not need to be electrically integrated. This is because the second sensing electrodes 122-1 to 122-8 are connected to the second sensing electrodes 122a, which are arranged in the respective columns and function as a vertical axis, so that each column already forms one vertical axis.

As described above, in the single-layer touch screen 100 according to the embodiment of the present invention, the sensing electrodes individually connected in the multilayer printed circuit board 160 are connected by one axis, , And the two sensing electrode portions function as X-axis pattern electrodes (horizontal axis sensing electrodes) and Y-axis pattern electrodes (vertical axis sensing electrodes), respectively.

Hereinafter, a single-layer touch screen according to another embodiment of the present invention will be described. However, except for the description overlapping with the embodiment described above, the description will be focused on the difference. It should be noted that the same reference numerals are used for the same components as those in the above-described embodiment.

5 is a front view schematically illustrating a single-layer touch screen 100 according to another embodiment of the present invention.

Referring to FIG. 5, the single-layer touch screen 100 according to another embodiment of the present invention is the same as the previous embodiment, except that the third wiring electrode portion 133 is further included. Therefore, the third wiring electrode portion 133 will be described below in detail.

In the single-layer touch screen 100 according to another embodiment of the present invention, the wiring electrode further includes a third wiring electrode portion 133. The third wiring electrode portion 133 serves to connect the first connection circuit portion 140 and the second connection circuit portion 150. Specifically, the third wiring electrode portion 133 is a wiring electrode connected to the first connection circuit portion 140 and the second connection circuit portion 150, and is formed in the bezel region 110b of the substrate 110.

At this time, the third wiring electrode portion 133 transmits the touch signal of the first sensing electrode portions 121-1 to 121-4 connected to the first connection circuit portion 140 to the second connection circuit portion 150 Role.

For example, as shown in FIG. 5, a first sensing electrode portion corresponding to 121-1 to 121-4 may be connected to the first connection circuit portion 140. At this time, the third wiring electrode part 133 transmits touch signals of the first sensing electrode parts 121-1 to 121-4 to the second sensing electrode part 150 for each row.

In other words, a third wiring electrode portion 133 corresponding to a total of four lines may be formed in the bezel region 110b (two lines on the left side and two lines on the right side).

That is, in the single-layer touch screen 100 according to another embodiment of the present invention, the first connection circuit 140 functions as a kind of intermediate circuit, unlike the above-described embodiment.

Specifically, the first connection circuit part 140 serves as an intermediate circuit through which touch signals of the first sensing electrode parts 121-1 through 121-4 pass, and at this time, through the third wiring electrode part 133 And transmits the touch signals of the first connection circuit section 140 to the second connection circuit section 150. The second connection circuit unit 150 is connected to an IC controller or the like to drive the entire touch screen.

Touch signals of the first sensing electrode units 121-1 to 121-4 are connected to the first connection circuit unit 140 through the first wiring electrode unit 131. [ 5, signals of the first sensing electrode units 121-1 through 121-4 enter the first connection circuit unit 140. At this time, in the first connection circuit unit 140, Signals are received by the second connection circuit part 150 through the third wiring electrode part 133 after arranging the signals in the X axis. In this case, since the touch signals of all the sensing electrode portions of the touch screen are transmitted to the second connection circuit portion 150, the touch screen can be driven together with the IC controller and the like.

Hereinafter, a display according to an embodiment of the present invention will be described.

The display according to an exemplary embodiment of the present invention may be a liquid crystal display or an organic light emitting display. However, the present invention is not limited thereto, and any display using a black matrix (black matrix) Can be applied. However, for convenience of explanation, the liquid crystal display will be mainly described below.

6 is a cross-sectional view schematically illustrating a display 1000 according to an embodiment of the present invention.

Referring to FIG. 6, the display 1000 may include a substrate S, a black matrix 100, a color forming unit 200, and an overcoat layer 300 sequentially stacked.

At this time, the substrate S and the black matrix 100 may be a single-layer touch screen (see FIG. 1 or FIG. 5) according to embodiments of the present invention. For this purpose, the black matrix 100 may be formed of a conductive material, thereby functioning as a sensing electrode and a wiring electrode of the single-layer touch screen.

For example, after the black matrix 100 is formed of a conductive material on the substrate S, the black matrix 100 may be patterned as the single-layer touch screen 100 shown in FIG. 1 or 5, (S) and the black matrix 100 may be formed in the same shape as the single-layer touch screen 100 according to the embodiments of the present invention.

Thus, the single-membrane touch screen 100 can be implemented integrally in the display 1000. Since the specific shapes of the sensing electrode and the wiring electrode of the single-layer touch screen 100 have been described above, the overlapping description will be omitted.

The black matrix 100 may be formed of one selected from the group consisting of indium tin oxide (ITO), indium zinc oxide (IZO), aldoped zinc oxide (AZO), Ga-doped zinc oxide (GZO), propylene dioxythiophene, (Al), copper (Cu), chromium (Cr), nickel (Ni), molybdenum (Ni), and the like Mo, or an alloy thereof. However, the present invention is not limited thereto.

The display 1000 may further include a metal layer (not shown) deposited on top of the black matrix 100. The metal layer may be patterned to have the same shape as the patterning shape of the black matrix 100. That is, the black matrix 100 described above may exist in a state where a metal layer is deposited on the upper portion.

As described above, when the metal layer is composed of the black matrix 100 and the double layer, the conductivity characteristics are improved, so that the sensing sensitivity of the black matrix 100 serving as the sensing electrode and the wiring electrode of the touch screen can be further improved . Meanwhile, the metal layer may be formed of any one of silver (Ag), aluminum (Al), copper (Cu), chromium (Cr), nickel (Ni), and molybdenum It is not.

The color forming unit 200 is disposed in the pixel region designated by the black matrix 100. [ The color forming unit 200 may be a color filter or an organic luminescent material. For example, when the display 1000 is a liquid crystal display (LCD), the color forming portion 200 may be a color filter, and the color forming portion 200 may be a color filter when the display 1000 is an organic light emitting display (OLED) May be an organic luminescent material. Hereinafter, the case where the color forming unit 200 is a color filter will be mainly described.

Generally, a color filter is a resinous material containing dyes and pigments of three basic colors (R, G, B), and serves to make light passing through the liquid crystal to have a color. In the display 1000 according to an exemplary embodiment of the present invention, the color forming unit 200 functions as an insulating layer in addition to the function (color filter function or light emitting function) inherent in the color forming unit. Meanwhile, it is possible to use a color filter or an organic luminescent material which is generally used in the field of display (here, the organic luminescent material generally includes a guest material in a host material) Green, and blue color emitting layers formed by implantation).

The overcoat layer 300 is formed for planarization of the surface of the color forming portion 300, and the upper portion of the color forming portion 300 may be formed to be curved. Accordingly, the overcoat layer 300 may be disposed above the color forming portion 300 to flatten the upper surface of the color forming portion 300. The overcoat layer 300 may be formed using an overcoat layer material commonly used in the display field.

The display 1000 may further include a liquid crystal layer 400 and a thin film transistor array substrate 500.

The liquid crystal layer 400 may be disposed on the overcoat layer 300 and the thin film transistor array substrate 500 may be disposed on the liquid crystal layer 400. At this time, a separate overcoat layer (not shown) may be formed on the upper and lower surfaces of the liquid crystal layer 400.

The liquid crystal layer 400 may be driven in accordance with pixel driving of the thin film transistor array substrate 500 to control the light transmittance of the thin film transistor array substrate 500.

The thin film transistor array substrate 500 includes a plurality of pixels (not shown) for driving the liquid crystal layer 400. Each pixel switches thin film transistors according to a gate signal applied to a gate line, The liquid crystal layer 400 can be driven by forming an electric field according to a data voltage applied to the liquid crystal layer 400. [

The liquid crystal layer 400 and the thin film transistor array substrate 500 are the same as or similar to those commonly used in the field of display, and thus their detailed description will be omitted.

As described above, in the embodiments of the present invention, the sensing electrode and the wiring electrode in the capacitive touch panel are efficiently arranged in a single film and the dual connection circuit portion is provided, whereby a single film touch screen with a minimized bezel Can be implemented. Further, by forming the sensing electrode and the wiring electrode in a single film, the process can be simplified and manufacturing cost can be reduced. In addition, the black matrix, which is a component of the display panel, is formed to be conductive and used as a sensing electrode and a wiring electrode of a touch screen, and the touch screen can be integrated into a display panel by using a color forming portion as an insulating layer.

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 of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

100: single-layer touch screen 110: substrate
110a: active area 110b: bezel area
121-1 to 121-8: First sensing electrode portion
121a: first sensing electrode 121b:
122-1 to 122-8: the second sensing electrode portion
122a: second sensing electrode 131: first wiring electrode part
132: second wiring electrode portion 133: third wiring electrode portion
140: first connection circuit part 150: second connection circuit part
160: multilayer printed circuit board 161: connection hole
100 (FIG. 4): black matrix S: substrate
200: color forming part 300: overcoat layer
400: liquid crystal layer 500: thin film transistor array substrate

Claims (9)

A single-layer touch screen including a plurality of sensing electrodes formed on a substrate and a plurality of wiring electrodes extending from the sensing electrodes,
A first connection circuit part provided on one side of the substrate; And
Further comprising a second connection circuit portion provided on the other side of the substrate,
And a part of the plurality of wiring electrodes is connected to the first connection circuit part and the other part is connected to the second connection circuit part. The method according to claim 1,
The sensing electrode
A pair of first sensing electrodes electrically connected to each other, a pair of first sensing electrodes arranged continuously in the horizontal direction so as to form one horizontal axis, A second sensing electrode disposed between the pair of first sensing electrodes so as not to overlap with each other, and a plurality of second sensing electrode units arranged in a longitudinal direction and constituting one longitudinal axis,
Wherein the wiring electrode
A plurality of first wiring electrode portions extended from the pair of first sensing electrodes of the first sensing electrode portion and connected to any one of the first connection circuit portion and the second connection circuit portion, And a second wiring electrode portion formed to connect the second sensing electrodes together and connected to the second connection circuit portion, wherein the first wiring electrode portion and the second wiring electrode portion are arranged so as not to contact each other. Just touch screen. The method according to claim 2,
Further comprising a third wiring electrode portion connecting the first connection circuit portion and the second connection circuit portion. The method according to claim 2,
The first wiring electrode portion is connected to the first connection circuit portion when the distance between the first sensing electrode portion and the first connection circuit portion is shorter than the distance between the first sensing electrode portion and the second connection circuit portion A single-layer touch screen. The method according to claim 2,
Wherein the interval between the first wiring electrode portions is narrower than the interval between the first wiring electrode portion and the second wiring electrode portion adjacent to the first wiring electrode portion. The method according to claim 2,
The sensing electrode and the wiring electrode are formed in a two-layer structure in which the lower layer is formed of a transparent conductive material and the upper layer is formed of a metal,
The transparent conductive material may be at least one selected from the group consisting of ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), AZO (Al-doped Zinc Oxide), GZO (Ga-doped Zinc Oxide), propylene dioxythiophene, Citophen), carbon nano tube or grapheme,
Wherein the metal is one of silver (Ag), aluminum (Al), copper (Cu), chromium (Cr), nickel (Ni), and molybdenum (Mo) or an alloy thereof. The method according to claim 2,
Wherein the first and second connection circuit portions are configured such that the connection terminals to which the first wiring electrode portion and the second wiring electrode portion are connected are disposed in two or more rows,
Wherein the first and second connection circuit portions are each provided with a multilayer printed circuit board composed of two or more circuit layers connectable by dividing a plurality of connection terminals into a horizontal axis or a vertical axis. 1. A display comprising a substrate and a black matrix formed on the substrate and designating a pixel region,
The black matrix is formed of a conductive material and is the same as the sensing electrode and the wiring electrode of the single-layer touch screen according to any one of claims 1 to 6. The method according to claim 8,
A color forming unit disposed on the black matrix; And
Further comprising an overcoat layer disposed over the color forming portion.

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