KR102237797B1 - Touch window and display with the same - Google Patents

Abstract

The touch window according to the embodiment includes: a substrate; An electrode unit disposed on the substrate and including a first conductive pattern; And a shorting portion disposed between the electrode portions.
According to another embodiment, a touch window includes a substrate; An electrode portion disposed on the substrate and including a conductive pattern; And a shorting part disposed between the electrode parts, the shorting part including a first sub-pattern and a dummy layer, and the dummy layer is disposed only in a part of the first sub-pattern.
A display device according to an embodiment includes: a touch window; And a driving unit disposed on the touch window, wherein the touch window includes: a substrate; An electrode unit disposed on the substrate and including a first conductive pattern; And a shorting portion disposed between the electrode portions.

Description

Touch window and display device including the same {TOUCH WINDOW AND DISPLAY WITH THE SAME}

The present disclosure relates to a touch window and a display device including the same.

Recently, in various electronic products, a touch panel for inputting an image displayed on a display device by contacting an input device such as a finger or a stylus has been applied.

The touch panel may be typically divided into a resistive type touch panel and a capacitive type touch panel. When a pressure is applied to an input device, a resistive touch panel detects a change in resistance according to a connection between electrodes, and a position is detected. The capacitive touch panel detects a change in capacitance between electrodes when a finger touches it and detects a position. In view of the convenience and sensing power of the manufacturing method, the capacitive method has recently attracted attention in small models.

Indium tin oxide (ITO), which is most widely used as a transparent electrode of such a touch panel, is expensive and physically easily hit by bending and bending of the substrate, deteriorating the characteristics of the electrode. flexible) There is a problem that it is not suitable for the device. In addition, when applied to a large-sized touch panel, a problem occurs due to high resistance.

In order to solve this problem, active research on an alternative electrode is being conducted. In particular, a metal material is formed in a mesh shape to replace ITO, but a visibility problem or a problem of electric current occurs due to a short circuit existing between each channel and the channel in such a mesh pattern.

The embodiment provides a touch window with improved reliability and a display device including the same.

The touch window according to the embodiment includes: a substrate; An electrode unit disposed on the substrate and including a first conductive pattern; And a shorting portion disposed between the electrode portions.

According to another embodiment, a touch window includes a substrate; An electrode portion disposed on the substrate and including a conductive pattern; And a shorting part disposed between the electrode parts, the shorting part including a first sub-pattern and a dummy layer, and the dummy layer is disposed only in a part of the first sub-pattern.

A display device according to an embodiment includes: a touch window; And a driving unit disposed on the touch window, wherein the touch window includes: a substrate; An electrode unit disposed on the substrate and including a first conductive pattern; And a shorting portion disposed between the electrode portions.

In the embodiment, by including the dummy pattern in the shorting portion, electrical characteristics of the electrode portion and visibility of the touch window may be improved. That is, it is possible to reduce the possibility of electric current occurring due to non-etching of the electrode layer included in the electrode unit, and to prevent the electrode unit from being visually recognized. Therefore, it is possible to improve the reliability of the touch window.

1 is a plan view of a touch window according to an embodiment.
FIG. 2 is an enlarged view showing an enlarged view of A of FIG. 1.
3 is a plan view of a touch window according to another exemplary embodiment.
4 is an enlarged view showing an enlarged B of FIG. 3.
FIG. 5 is a cross-sectional view taken along line I-I' of FIG. 4.
6 is a cross-sectional view showing a cross section taken along II-II' of FIG. 4.
7 to 10 are enlarged views of a touch window according to another embodiment.
11 is a cross-sectional view illustrating a cross section taken along line III-III' of FIG. 10.
12 is an enlarged view of a touch window according to another embodiment.
13 is an enlarged view of a touch window according to another exemplary embodiment.
14 is a cross-sectional view illustrating a cross section taken along VI-VI' of FIG. 13.
15 is a cross-sectional view illustrating a display device in which a touch window is disposed on a display panel according to an embodiment.

In the description of the embodiments, each layer (film), region, pattern, or structure is “on” or “under/under” the substrate, each layer (film), region, pad, or patterns. The description that "is formed in" includes all that are formed directly or through another layer. The standards for the top/top or bottom/bottom of each layer will be described based on the drawings.

In the drawings, the thickness or size of each layer (film), region, pattern, or structure may be modified for clarity and convenience of description, and thus the actual size is not entirely reflected.

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

First, a touch window according to an embodiment will be described in detail with reference to FIGS. 1 and 2.

Referring to FIG. 1, the touch window 10 according to the embodiment includes an effective area AA for detecting a position of an input device (eg, a finger, etc.) and an ineffective area AA disposed around the effective area AA. It includes a substrate 100 on which an area UA is defined.

Here, the electrode part 300 may be formed in the effective area AA to detect the input device. In addition, a wiring 500 electrically connecting the electrode unit 300 may be formed in the non-effective area UA. In addition, an external circuit connected to the wiring 500 may be located in the invalid area UA.

When an input device such as a finger comes into contact with such a touch window, a difference in capacitance occurs at a portion where the input device is in contact, and a portion where the difference occurs may be detected as a contact position.

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

The substrate 100 may be formed of various materials capable of supporting the electrode portion 300, the wiring 500, and a circuit board formed thereon. The substrate 100 may be formed of a glass substrate or a plastic substrate, for example.

An outer dummy layer is formed in the non-effective area UA of the substrate 100. The outer dummy layer may be formed by coating a material having a predetermined color so that the wiring 500 and a printed circuit board connecting the wiring 500 to an external circuit are not visible from the outside. The outer dummy layer may have a color suitable for a desired appearance, and for example, may exhibit black, including a black pigment. In addition, a desired logo or the like can be formed on the outer pile layer in various ways. Such an outer pile layer may be formed by deposition, printing, wet coating, or the like.

An electrode part 300 may be formed on the substrate 100. The electrode unit 300 may detect whether an input device such as a finger is in contact. In FIG. 1, the electrode part 300 is shown to extend in one direction on the substrate, but the embodiment is not limited thereto. Accordingly, the electrode part 300 may extend in another direction crossing one direction. In addition, the electrode unit 300 may include two types of electrode units 300 having a shape extending in one direction and a shape extending in the other direction.

Meanwhile, the electrode part 300 may include a first conductive pattern. For example, the electrode part 300 may be arranged in a mesh shape. In this case, the mesh shape may be formed randomly so as to prevent the moire phenomenon. The moire phenomenon is a pattern created by overlapping periodic stripes. As neighboring stripes overlap, the thickness of the stripes becomes thicker, making them stand out compared to other stripes. Accordingly, in order to prevent such moire phenomenon, the conductive pattern shape may be variously arranged.

Specifically, the electrode part 300 includes a conductive pattern opening OA and a conductive pattern line part LA. Conductive pattern lines are disposed on the conductive pattern line part LA. In this case, the line width of the conductive pattern line part LA may be 0.1 µm to 10 µm. The conductive pattern line portion LA having a line width of 0.1 μm or less may not be possible due to a manufacturing process. When the line width is 10 μm or less, the pattern of the electrode part 300 may be made invisible. Preferably, the line width of the conductive pattern line part LA may be 1 µm to 10 µm.

Meanwhile, as shown in FIG. 1, the conductive pattern may have a regular shape. That is, the conductive pattern opening OA may have a square shape. However, the embodiment is not limited thereto, and the conductive pattern opening OA may include various shapes such as a diamond shape, a pentagonal shape, a hexagonal polygonal shape, or a circular shape.

In addition, embodiments are not limited thereto, and the conductive pattern may have an irregular shape. That is, various conductive pattern openings may be provided in one conductive pattern. Accordingly, the electrode part 300 may include conductive pattern openings of various shapes.

Since the electrode part 300 has a mesh shape, the pattern of the electrode part 300 may not be visible on the effective area AA. That is, even if the electrode part 300 is formed of metal, it is possible to make the pattern invisible. In addition, even when the electrode part 300 is applied to a large-sized touch window, resistance of the touch window may be lowered. In addition, when the electrode part 300 is formed by a printing process, a high-quality touch window can be secured by improving print quality.

Referring to FIG. 2, the electrode part 300 may include a first sub-pattern 210, a second sub-pattern 220, and an electrode layer 310.

The first sub-pattern 210 is disposed on the substrate 100. The first sub-pattern 210 is disposed on the mesh line part LA. Accordingly, the first sub-pattern 210 is disposed in a mesh shape. The first sub-pattern 210 may be embossed.

The second sub-pattern 220 is disposed on the substrate 100. The second sub-pattern 220 is disposed in the mesh opening OA. Accordingly, the second sub-pattern 220 may be disposed between the first sub-patterns 210. The second sub-pattern 220 may be embossed. A line width of the second sub-pattern 220 may be smaller than a line width of the first sub-pattern 210.

The first sub-pattern 210 and the second sub-pattern 220 may include resin or a polymer.

The electrode layer 310 is disposed on the first sub-pattern 210 in the electrode part 300. Accordingly, the electrode layer 310 is disposed on the mesh line LA, and the electrode layer 310 is disposed in a mesh shape. The electrode layer 310 may include various metals having excellent electrical conductivity. For example, the electrode layer 310 may include Cu, Au, Ag, Al, Ti, Ni, or an alloy thereof.

Meanwhile, a shorting part 400 is disposed between the electrode parts 300. The shorting part 400 may include a second conductive pattern. That is, the shorting part 400 may include a different conductive pattern than the electrode part 300.

The spacing D2 of the short-circuiting part 400 may be larger than the line width T1 of the conductive pattern lines and smaller than the spacing D1 of the conductive pattern lines. As an example, the spacing D2 of the shorting portion 400 may be in the range of 1 μm to 500 μm. Through this, electrical characteristics of the electrode unit 300 and visibility of the touch window may be improved. That is, due to the non-etching of the electrode layer 310 included in the electrode part 300, the possibility of electric power generation may be reduced, and visibility of the electrode part 300 may be prevented. Therefore, it is possible to improve the reliability of the touch window.

The shorting part 400 may include dummy patterns 410 and shorting patterns 420.

The dummy pattern 410 may include a first sub-pattern 210 and a dummy layer 411 disposed on the first sub-pattern 210. Meanwhile, as shown in FIG. 2, the distance d1 between the dummy patterns 410 may be constant.

Meanwhile, the distance d1 between the dummy patterns 410 may be larger than the line width T1 of the conductive pattern lines and smaller than the distance D1 between the conductive pattern lines. For example, the distance d1 between the dummy patterns 410 may be 1 μm to 500 μm.

In addition, a gap between the dummy pattern 410 and the first conductive pattern may be greater than a line width T1 of the conductive pattern line and smaller than a gap D1 of the conductive pattern lines. As an example, an interval between the dummy pattern 410 and the first conductive pattern may be 1 μm to 500 μm. If the distance between the dummy pattern 410 and the first conductive pattern is smaller than the line width T1 of the conductive pattern line, a short circuit may occur between electrodes, resulting in a defect. In addition, when the distance between the dummy pattern 410 and the first conductive pattern is larger than the distance D1 of the conductive pattern lines, a milky phenomenon (a phenomenon that looks blurry) may occur, and there may be no difference from the case without the dummy pattern. have

In this case, the dummy layer 411 may include the same material as the electrode layer 310.

The shorting pattern 420 is disposed adjacent to the dummy pattern 410. The shorting pattern 420 includes the first sub-pattern 210. That is, the short-circuit pattern 420 may be a pattern that does not include the dummy layer 411 on the first sub-pattern 210.

Meanwhile, a touch window according to another exemplary embodiment will be described with reference to FIGS. 3 to 6. For clarity and brief description, detailed descriptions of parts that are the same or similar to those described above are omitted.

3 and 4, the electrode part 300 of the touch window according to another embodiment may include a different type of conductive pattern. That is, a conductive pattern different from the conductive pattern shown in FIG. 1 may be included. In this case, the conductive pattern of the shorting part 400 may also be changed.

5 and 6, the electrode part 300 may include a first sub-pattern 210, a second sub-pattern 220, and an electrode layer 310.

The first sub-pattern 210 is disposed on the substrate 100. The first sub-pattern 210 is disposed on the mesh line part LA. Accordingly, the first sub-pattern 210 is disposed in a mesh shape. The first sub-pattern 210 may be embossed.

The second sub-pattern 220 is disposed on the substrate 100. The second sub-pattern 220 is disposed in the mesh opening OA. Accordingly, the second sub-pattern 220 may be disposed between the first sub-patterns 210. The second sub-pattern 220 may be embossed. A line width of the second sub-pattern 220 may be smaller than a line width of the first sub-pattern 210.

The first sub-pattern 210 and the second sub-pattern 220 may include resin or a polymer.

The electrode layer 310 is disposed on the first sub-pattern 210. Accordingly, the electrode layer 310 is disposed on the mesh line LA, and the electrode layer 310 is disposed in a mesh shape. The electrode layer 310 may include various metals having excellent electrical conductivity. For example, the electrode layer 310 may include Cu, Au, Ag, Al, Ti, Ni, or an alloy thereof.

The shorting part 400 may include a shorting pattern 420 and a dummy pattern 410.

The dummy pattern 410 may include a first sub-pattern 210 and a dummy layer 411 disposed on the first sub-pattern 210. Meanwhile, as shown in FIG. 4, the distance between the dummy patterns 410 may be constant.

In this case, the dummy layer 411 may include the same material as the electrode layer 310.

4 and 6, the short pattern 420 is disposed adjacent to the dummy pattern 410. The shorting pattern 420 includes the first sub-pattern 210. That is, the short-circuit pattern 420 may be a pattern in which the dummy layer 411 is not formed on the first sub-pattern 210.

Referring to FIG. 7, the number of dummy patterns 410 disposed in the shorting portion 400 may be variously provided. That is, less than the number of dummy patterns 410 shown in FIG. 5 may be provided. However, the exemplary embodiment is not limited thereto, and a larger number of dummy patterns 410 may be provided. In this case, the intervals d1 and d2 between the dummy patterns 410 may be constant. That is, the distances d1 and d2 between the dummy patterns 410 may be the same.

Meanwhile, referring to FIG. 8, the number of dummy patterns 410 disposed in the shorting unit 400 may be variously provided. In this case, there may be two or more types of gaps d3 and d4 between the dummy patterns 410. That is, the distances d3 and d4 between the dummy patterns 410 may vary. For example, the distances d3 and d4 between the dummy patterns 410 may be different.

In addition, referring to FIG. 8, line widths d3 and d4 of the shorting pattern 420 disposed in the shorting portion 400 may be variously provided. That is, the short circuit pattern 420 may have two or more line widths d3 and d4. For example, line widths d3 and d4 of the short-circuit patterns 420 may be different.

Meanwhile, referring to FIG. 9, line widths T2, T3, and T4 of dummy patterns 410 disposed in the shorting portion 400 may vary. That is, the line widths T2, T3, and T4 of the dummy patterns 410 may be at least two or more types. As shown in FIG. 7, there may be three types of line widths T2, T3, and T4 of the dummy patterns 410.

Meanwhile, referring to FIGS. 10 and 11, the dummy patterns 410 disposed in the shorting portion 400 may have various shapes. As an example, as shown in FIG. 10, the dummy patterns 410 may include a square shape of various sizes. However, the embodiment is not limited thereto, and the dummy patterns 410 may be provided in various shapes such as a circle, a polygon, and a diamond shape.

Particularly, referring to FIG. 11, the shorting part 400 includes a first sub-pattern 210 and a dummy layer 411, and the dummy layer 411 is only a part of the first sub-pattern 210. Can be placed.

Subsequently, referring to FIG. 12, the dummy patterns 410 disposed in the shorting portion 400 may have a direction different from that of the conductive pattern line of the electrode portion 300. Accordingly, the dummy patterns 410 may be disposed diagonally to the conductive pattern of the electrode unit 300. Accordingly, the short-circuit pattern 420 may also have various directions and various shapes.

Meanwhile, a touch window according to another exemplary embodiment will be described with reference to FIGS. 13 and 14. 13 and 14, a touch window according to another embodiment includes a dummy pattern 410 and a short pattern 420.

In this case, the dummy pattern 410 includes a first sub-pattern 210 and a dummy layer 411 disposed on the first sub-pattern 210.

The shorting pattern 420 may be formed of only the resin layer 201 supporting the first sub-pattern 210. That is, the short-circuit pattern 420 may not include the first sub-pattern 210.

In this case, the distance d1 between the dummy pattern 410 and the electrode part 300 may be larger than the line width T1 of the conductive pattern line and smaller than the distance D1 of the conductive pattern lines. For example, the distance d1 between the dummy pattern 410 and the electrode part 300 may be 1 μm to 500 μm.

Meanwhile, referring to FIG. 15, such a touch window 10 may be disposed on the display panel 20 that is a driver. 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. A 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, and a thin film transistor (TFT) 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 shapes depending on what kind 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 (PDP), an organic light-emitting display (OLED), and an electrophoretic display (EPD). Accordingly, the display panel 20 may be configured in various forms.

Features, structures, effects, and the like described in the above-described embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, and the like illustrated in each embodiment may be combined or modified for other embodiments by a person having ordinary knowledge in the field to which the embodiments belong. Therefore, contents related to such combinations and modifications should be construed as being included in the scope of the present invention.

In addition, although the embodiments have been described above, these are only examples and do not limit the present invention, and those of ordinary skill in the field to which the present invention pertains are illustrated above within the scope not departing from the essential characteristics of the present embodiment. It will be seen that various modifications and applications that are not available are possible. For example, each component specifically shown in the embodiments can be modified and implemented. And differences related to these modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

Claims (17)

A substrate including an effective area and an inactive area;
An electrode portion disposed on the effective area of the substrate;
A wiring disposed on an ineffective region of the substrate and connected to the electrode portion; And
And a short-circuiting portion disposed between the electrode portions,
The electrode part includes a first conductive pattern including a conductive pattern line part and a conductive pattern opening between the conductive pattern line part,
A touch window having an interval of 1 µm to 500 µm. The method of claim 1,
The shorting portion touch window including a second conductive pattern. The method of claim 1,
The electrode unit includes an electrode unit extending in one direction and an electrode unit extending in the other direction. The method of claim 1,
The electrode part is a touch window including Cu, Au, Ag, Al, Ti, Ni, or an alloy thereof. The method of claim 1,
The line width of the conductive pattern line portion is 0.1 μm to 10 μm. The method of claim 1,
The shorting portion includes a shorting pattern and a dummy pattern,
The touch window between the dummy patterns is larger than the line width of the conductive pattern line and smaller than the distance between the conductive pattern line parts. The method of claim 1,
The shorting portion includes a shorting pattern and a dummy pattern,
A touch window in which an interval between the dummy pattern and the first conductive pattern is larger than a line width of the conductive pattern line portion and smaller than the interval between the conductive pattern line portions. The method according to claim 6 or 7,
A touch window having a constant spacing between the dummy patterns. The method of claim 1,
The shorting portion includes a shorting pattern and a dummy pattern,
A touch window having at least two or more gaps between the dummy patterns. The method of claim 1,
The shorting portion includes a shorting pattern and a dummy pattern,
A touch window having a constant width of the dummy patterns. The method of claim 1,
The shorting portion includes a shorting pattern and a dummy pattern,
A touch window having at least two or more widths of the dummy patterns. The method of claim 1,
The shorting portion includes a shorting pattern and a dummy pattern,
The electrode unit includes a first sub-pattern and an electrode layer disposed on the first sub-pattern. The method of claim 12,
The dummy pattern includes a first sub-pattern and a dummy layer disposed on the first sub-pattern. The method of claim 13,
A touch window disposed adjacent to the first sub-pattern and including a second sub-pattern smaller than a line width of the first sub-pattern. The method of claim 13,
The electrode layer and the dummy layer include the same material. Driving unit; And
Including a touch window disposed on the driving unit,
The touch window,
A substrate including an effective area and an inactive area;
An electrode portion disposed on the effective area of the substrate;
A wiring disposed on an ineffective region of the substrate and connected to the electrode portion; And
And a short-circuiting portion disposed between the electrode portions,
The electrode part includes a first conductive pattern including a conductive pattern line part and a conductive pattern opening between the conductive pattern line part,
A display device having an interval of 1 µm to 500 µm. delete

Images