KR20150087941A - Electrod members, touch window with the same and display with the same - Google Patents

Abstract

According to an embodiment, the present invention provides an electrode member having enhanced reliability and a display device including the same. The electrode member according to an embodiment of the present invention comprises a substrate and a sensing electrode disposed on the substrate to sense a position, wherein the sensing electrode includes a first sensing unit and a second sensing unit disposed adjacent to the first sensing unit and has multiple wires connected to the first sensing unit, wherein the distance from the first sensing unit to the second sensing unit is 150 μm or less.

Description

TECHNICAL FIELD [0001] The present invention relates to an electrode member, a touch window including the electrode member, and a display device including the electrode member.

The present invention relates to an electrode member, a touch window including the electrode member, and a display device including the same.

2. Description of the Related Art In recent years, a touch panel has been applied to an image displayed on a display device in various electronic products by a method of touching an input device such as a finger or a stylus.

The touch panel is typically divided into a resistive touch panel and a capacitive touch panel. The resistance film type touch panel senses that the resistance changes according to the connection between the electrodes when the pressure is applied to the input device, and the position is detected. A capacitance type touch panel senses a change in electrostatic capacitance between electrodes when a finger touches them, thereby detecting the position. Considering the convenience of the manufacturing method and the sensing power, recently, in a small model, the electrostatic capacity method has attracted attention.

On the other hand, there is a problem that the sensing electrode sensing the position of the touch panel is recognized by natural light or light.

The embodiment can provide an electrode member with improved reliability and a display device including the electrode member.

An electrode member according to an embodiment includes: a substrate; And a sensing electrode disposed on the substrate and sensing a position of the sensing unit, wherein the sensing electrode includes a first sensing unit and a second sensing unit disposed adjacent to the first sensing unit, And a distance between the first sensing unit and the second sensing unit is 150 占 퐉 or less.

In the embodiment, the interval between the sensing electrodes may be 150 mu m or less. Further, a dummy portion may be disposed adjacent to the sensing electrode. Accordingly, the pattern of the sensing electrode can be prevented from being visually recognized, and the optical characteristics and visibility of the electrode member including the sensing electrode, the touch window, and the display device can be improved.

1 is a schematic plan view of an electrode member according to an embodiment.
2 is a plan view of an electrode member according to an embodiment.
3 to 6 are plan views of an electrode member according to another embodiment.
7 is a cross-sectional view taken along the line A-A 'in Fig.
8 is a cross-sectional view of an electrode member according to another embodiment.
9 is a cross-sectional view showing a display device in which an electrode member according to an embodiment is disposed on a display panel.

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

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

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, the touch window 10 according to the embodiment includes a valid area AA for sensing the position of an input device (e.g., a finger or the like) And a non-effective area UA is defined.

Here, the sensing electrode 200 may be formed in the effective area AA to sense the input device. Wirings 310 and 320 electrically connecting the sensing electrode 200 may be formed in the non-effective region UA. An external circuit or the like connected to the wirings 310 and 320 may be disposed in the ineffective area UA.

1 and 2, the ineffective area UA may be disposed on only two sides of the effective area AA. Specifically, the non-effective area UA may be disposed only at the upper and lower ends of the effective area AA. That is, the non-valid area UA may not be disposed on the side of the valid area AA.

Therefore, the effective area AA which is the screen area of the touch window can be maximized, and a large screen can be provided to the user. In addition, it is possible to overcome the design limitation due to the bezel which is the ineffective area (UA).

The touch window will be described in more detail as follows.

The substrate 100 may be formed of various materials capable of supporting the sensing electrode 200, the wirings 310 and 320, and the circuit board formed thereon. The substrate 100 may be a glass substrate or a plastic substrate, for example.

An outer dummy layer is formed in the ineffective area UA of the substrate 100. [ The outer dummy layer may be formed by applying a material having a predetermined color so that the wirings 310 and 320 and the printed circuit board connecting the wirings 310 and 320 to an external circuit can not be seen from the outside. The outer dummy layer may have a color suitable for a desired appearance, for example, a black color including black pigment and the like. A desired logo can be formed on the outer dummy layer by various methods. Such an outer dummy layer can be formed by vapor deposition, printing, wet coating or the like.

The sensing electrode 200 may be formed on the substrate 100. The sensing electrode 200 may sense whether an input device such as a finger is in contact. The sensing electrode 200 may have a shape extending in one direction.

2, the sensing electrode 200 extends in the first direction on the substrate 100, but the embodiment is not limited thereto. Therefore, the sensing electrode 200 may extend in a second direction crossing the first direction. In addition, the sensing electrode 200 may include two types of sensing electrodes 200 having a shape extending in a first direction and a shape extending in a second direction.

In FIG. 2, the sensing electrode 200 is shown in the form of a bar, but the embodiment is not limited thereto. Therefore, the sensing electrode 200 can be formed in various shapes to detect whether or not an input device such as a finger is contacted.

The sensing electrode 200 may include a transparent conductive material so that electricity can flow without disturbing the transmission of light. The sensing electrode 200 may include at least one of indium tin oxide, indium zinc oxide, copper oxide, tin oxide, zinc oxide, titanium oxide, oxide and the like.

The sensing electrode 200 may include various materials such as a carbon nano tube (CNT), a nanowire, or graphene.

The sensing electrode 200 may include a plurality of sensing units. For example, the sensing electrode 200 may include a first sensing unit 210 and a second sensing unit 220 disposed adjacent to the first sensing unit 210.

At this time, the gap G1 between the first sensing unit 210 and the second sensing unit 220 may be 150 mu m or less. Specifically, the gap G1 between the first sensing unit 210 and the second sensing unit 220 may be between 1 μm and 150 μm. Accordingly, it is possible to prevent the patterns of the first sensing unit 210 and the second sensing unit 220 from being visually recognized, and the electrode member including the sensing electrode 200, the touch window, Characteristics and visibility can be improved.

When the touch window is touched, a signal deformed by a resistance value and a capacitance value formed in the sensing electrode 200 may be compared with a reference signal to determine a position.

In detail, a reference signal may cross the sensing electrode 200 through a uniform resistance design in the sensing electrode 200. That is, a reference signal based on a uniform resistance can be traversed across the first sensing unit 210 and the second sensing unit 220. When touching, a voltage change due to a resistance and a capacitance formed on the sensing electrode 200 occurs. Here, the contact position can be calculated by calculating a voltage change with time. That is, a time difference occurs with respect to the time response according to the voltage change, and the position can be recognized by comparing the modified signal with the reference signal.

Wires 310 and 320 electrically connecting the first sensing unit 210 may be formed in the non-effective area UA. The plurality of wirings 310 and 320 may be provided.

That is, the wirings 310 and 320 are connected to a first wiring 310 connected to one end of the first sensing unit 210 and a second wiring 310 connected to the other end opposite to the one end of the first sensing unit 210 The second wiring 320 may be formed on the second wiring 320. Accordingly, the first wiring 310 may be drawn to the top of the substrate 100. [ In addition, the second wiring 320 may be drawn to the lower end of the substrate 100.

The wirings 310 and 320 may be made of a metal having excellent electrical conductivity. For example, the wirings 310 and 320 may be formed of Cr, Ni, Cu, Al, Ag, Mo, or an alloy thereof. In particular, the wiring 310 may include various metal paste materials that can be formed by a printing process.

Electrode pads (not shown) are disposed at the ends of the wirings 310 and 320. Such an electrode pad can be connected to a printed circuit board. Specifically, although not shown in the drawings, a connection terminal is located on one side of the printed circuit board, and the electrode pad can be connected to the connection terminal. The electrode pad may have a size corresponding to the connection terminal.

As the printed circuit board, various types of printed circuit boards can be applied. For example, a flexible printed circuit board (FPCB) or the like can be applied.

Referring to FIG. 3, a dummy portion 250 is disposed adjacent to the sensing electrode 200 in a touch window according to another embodiment. Specifically, the dummy unit 250 may be disposed between the first sensing unit 210 and the second sensing unit 220.

The dummy unit 250 may include the same material as the sensing electrode 200. Therefore, the optical property and visibility of the touch window can be improved through the dummy portion 250. [

At this time, the gap G2 between the sensing electrode 200 and the dummy 250 may be 150 mu m or less. Specifically, the gap G2 between the sensing electrode 200 and the dummy portion 250 may be between 1 μm and 150 μm. Therefore, the distance between the first sensing unit 210 and the dummy unit 250 may be 1 to 150 m, and the interval between the second sensing unit 220 and the dummy unit 250 may be 1 Mu] m to 150 [mu] m.

In FIG. 3, the rectangular dummies 250 are arranged in one row, but the embodiment is not limited thereto. Accordingly, the dummy portion 250 may include various shapes and may be arranged in various numbers.

Next, referring to FIG. 4, the sensing electrode 200 may include a conductive pattern. That is, the sensing electrode 200 may be formed in a mesh shape.

The sensing electrode 200 may include various metals having excellent conductivity. For example, when the sensing electrode 200 has a mesh shape, the sensing electrode 200 may include Cu, Au, Ag, Al, Ti, Ni, or an alloy thereof.

At this time, the dummy portion 250 disposed adjacent to the sensing electrode 200 may also include a conductive pattern. That is, the sensing electrode 200 and the dummy portion 250 may have the same pattern or shape. In addition, the dummy unit 250 may include the same material as the sensing electrode 200.

Meanwhile, the line width of the mesh line of the sensing electrode 200 and the dummy portion 250 may be 0.1 μm to 10 μm. A mesh wire having a line width of 0.1 mu m or less may not be possible in the manufacturing process. When the line width is 10 占 퐉 or less, the visibility can be improved. Preferably, the line width of the mesh line may be between 1 탆 and 5 탆.

Referring to FIG. 5, the first sensing unit 210 and the second sensing unit 220 may be arranged to be engaged with each other. Specifically, the first sensing unit 210 may include a concave portion 210a, and the second sensing unit 220 may include a convex portion 220a. At this time, the convex portion 220a is disposed in the concave portion 210a, and can correspond to each other.

Referring to FIG. 6, a dummy unit 250 may further be disposed between the first sensing unit 210 and the second sensing unit 220. At this time, the dummy part 250 may be disposed in the concave part 210a of the first sensing part 210 as well.

Next, referring to FIG. 7, a cover substrate 110 may be further disposed on the substrate 100. The cover substrate 110 may include tempered glass.

An optical clear adhesive (OCA) 400 may be disposed between the cover substrate 110 and the substrate 100.

Next, referring to FIG. 8, the substrate 100 may include an engraved 110a. The engraved angle 110a is a concave portion of the substrate 100 in the depth direction. And the sensing electrode 200 and the dummy unit 250 may be disposed in the intaglio 110a. This can reduce the thickness of the touch window.

 Referring to FIG. 9, the touch window 10 may be disposed on the display panel 20 as a driving unit. The touch window 10 and the display panel 20 are bonded together to form a display device.

The display panel 20 has a display area for outputting an image. The display panel applied to such a display device may generally include an upper substrate 21 and a lower substrate 22. [ A data line, a gate line, a thin film transistor (TFT), or the like may be formed on the lower substrate 22. The upper substrate 21 may be bonded to the lower substrate 22 to protect components disposed on the lower substrate 22. [

The display panel 20 may be formed in various forms depending on what type of display device the display device according to the present invention is. That is, the display device according to the present invention includes a liquid crystal display (LCD), a field emission display, a plasma display panel (PDP), an organic light emitting display (OLED), and an electrophoretic display So that the display panel 20 can be configured in various forms.

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

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

Claims (17)

Board;
And a sensing electrode disposed on the substrate and sensing a position,
The sensing electrode includes a first sensing unit and a second sensing unit disposed adjacent to the first sensing unit,
And a plurality of wires connected to the first sensing unit,
Wherein an interval between the first sensing unit and the second sensing unit is not more than 150 mu m. The method according to claim 1,
And an interval between the first sensing portion and the second sensing portion is 1 占 퐉 to 150 占 퐉. 3. The method of claim 2,
And a dummy portion disposed adjacent to the sensing electrode. The method of claim 3,
And an interval between the sensing electrode and the dummy portion is 1 占 퐉 to 150 占 퐉. The method according to claim 1,
Wherein the sensing electrode has a shape extending in one direction. The method according to claim 1,
Wherein the sensing electrode comprises a conductive pattern. The method of claim 3,
Wherein the dummy portion includes a conductive pattern. The method of claim 3,
Wherein the dummy portion is disposed between the first sensing portion and the second sensing portion. The method of claim 3,
Wherein the sensing electrode and the dummy portion comprise the same material. The method according to claim 1,
Wherein the first sensing unit and the second sensing unit have the same shape. The method according to claim 1,
Wherein the first sensing portion includes a concave portion,
Wherein the second sensing portion includes a convex portion,
And the convex portion is disposed in the concave portion. The method according to claim 1,
Wherein the first sensing unit and the second sensing unit are interdigitated with each other. The method according to claim 1,
A first wiring connected to one end of the first sensing unit, and a second wiring connected to another end of the first sensing unit. The method of claim 3,
Wherein the substrate comprises an engraved,
And the sensing electrode and the dummy portion are disposed in the intaglio angle. Board;
And a sensing electrode disposed on the substrate and sensing a position,
The sensing electrode includes a first sensing unit and a second sensing unit disposed adjacent to the first sensing unit,
And a dummy portion disposed between the first sensing portion and the second sensing portion,
And an interval between the sensing electrode and the dummy portion is 1 占 퐉 to 150 占 퐉. Board;
And a sensing electrode disposed on the substrate and sensing a position,
The sensing electrode includes a first sensing unit and a second sensing unit disposed adjacent to the first sensing unit,
And a plurality of wires connected to the first sensing unit,
Wherein a distance between the first sensing unit and the second sensing unit is 10 占 퐉 to 150 占 퐉. Touch window; And
And a driver disposed on the touch window,
The touch window includes:
Board;
And a sensing electrode disposed on the substrate and sensing a position,
The sensing electrode includes a first sensing unit and a second sensing unit disposed adjacent to the first sensing unit,
And a plurality of wires connected to the first sensing unit,
Wherein a distance between the first sensing unit and the second sensing unit is 10 占 퐉 to 150 占 퐉.

Images