TWI615758B - Touch panel and display - Google Patents

Abstract

The present invention provides a touch panel and a display, the touch panel comprising: a substrate; a connecting portion formed on the substrate; an insulating portion formed on the connecting portion; a first electrode portion; The connecting portion is electrically connected; and a second electrode portion is isolated from the connecting portion.

Description

Touch panel and display device

Embodiments of the present invention relate to a touch panel and a display device.

Resistive, electromagnetic induction, optical, capacitive, etc. have been used in touch panels of mobile terminals. In recent years, capacitive touch panels have been widely used.

In general, a capacitive touch panel is mainly composed of a structure including two layers of capacitive sensing layers. The two layers of capacitive sensing layers form a space whose space is formed by an insulating material between the two capacitors. This configuration makes the touch panel structure thicker and therefore runs counter to the smallest size.

Accordingly, regarding the processing of this problem, a technique for reducing the two-layer capacitive sensing layer into one layer has been applied.

When the touch panel is configured to reduce the two layers of the capacitive sensing layer into one layer, a first electrode and a second electrode are formed on the same surface of a substrate, and an insulating layer is formed on the first electrode by using an insulating material. The second electrode and the plurality of second electrodes spaced apart from each other are electrically connected by a metal bridge formed on the insulating layer.

However, a problem with the prior art is that the metal bridge is oxidized or scratched due to exposure. Further, in the case where the thickness of the metal bridge is less than 10 μm, there is a problem that the wiring cannot be connected due to oxidation or scratching.

Accordingly, the present invention has been made in view of the above problems of the prior art. An object of the present invention is to provide a touch panel in which a sensing metal pattern portion is electrically connected to each other, and a metal bridge is located in one of the inner portions of the touch panel, and is not exposed to the outside. The metal bridge is prevented from being oxidized or scratched, thus preventing the problem that one of the metal bridges is not connected.

In addition, another object of the embodiment of the present invention is to provide a touch panel capable of The product cost can be reduced while maintaining the isolation between the first electrode portion and the second electrode portion, and the connection between the connection portion and the first electrode portion can be avoided, and even avoiding An error in the formation of the first electrode portion and the first electrode portion form an alignment error.

Accordingly, an object of the present invention is to provide a touch panel comprising: a substrate; a connecting portion formed on the substrate; an insulating portion formed on the connecting portion; a first electrode portion electrically connected to the a connecting portion; and a second electrode portion that is isolated from the connecting portion.

According to an embodiment of the invention, the first electrode portion may be configured to cover a portion of the connecting portion or an upper surface of the insulating portion.

According to another embodiment of the present invention, an upper surface of the first electrode portion may be formed to be higher than the connection portion or the upper surface of the insulating portion.

According to another embodiment of the present invention, an upper surface of the first electrode portion may be formed to be the same height as an upper surface of one of the second electrode portions.

According to another embodiment of the present invention, the first electrode portion may be formed at the connection portion or the insulating layer may be laminated on an outer peripheral portion.

According to another embodiment of the present invention, the insulating portion may be formed to entirely cover the upper surface of the connecting portion.

According to another embodiment of the present invention, the insulating portion may be formed to partially cover the upper surface of the connecting portion.

According to another embodiment of the present invention, the touch panel further includes a functional layer formed between the substrate and the connecting portion.

According to another embodiment of the present invention, the functional layer may be any one of a blackening layer, an adhesive layer, and a metal seed layer.

According to another embodiment of the present invention, the blackening layer may be any one of an oxide, a nitride, and a fluoride.

According to another embodiment of the present invention, the second electrode portion may be imprinted within the insulating portion.

According to another embodiment of the present invention, the connecting portion may be formed of one of a carbon nanotube (CNT), aluminum, gold, silver, tin, chromium, nickel, titanium, and magnesium.

According to another embodiment of the present invention, the connection portion may be formed of any one of a metal oxide, a nitride, and a fluoride.

According to another embodiment of the present invention, at least one of the connection portion, the first electrode portion, and the second electrode portion may be formed of an opaque material.

According to another embodiment of the present invention, at least one of the connecting portion, the first electrode portion, and the second electrode portion may be configured in a mesh shape.

According to another embodiment of the present invention, the first electrode portion or the second electrode portion may be made of indium tin oxide (ITO), indium zinc oxide (IZO), and zinc oxide ZnO (Zinc Oxide). A carbon nano tube (CNT), a silver nanowire, a conductive polymer, and graphene are formed.

According to another embodiment of the invention, the substrate can be a transparent window.

Another object of the present invention is to provide a display comprising: a touch panel comprising a substrate, a connecting portion formed on the substrate, a first electrode portion electrically connected to the connecting portion, and a connecting portion An isolated second electrode portion; a driving portion for providing a driving signal to the touch panel; an LCD module formed on the touch panel; and a polarizing plate formed on the touch panel.

According to an embodiment of the invention, the substrate can be a transparent window.

According to another embodiment of the present invention, the display further includes a transparent window formed on either side of the touch panel, the LCD module, and the polarizing plate.

According to another embodiment of the present invention, the touch panel can be formed between the polarizing plate and the LCD module.

According to an embodiment of the invention, when the connection portion electrically connecting the sensing electrode pattern portions to each other is located in an inner portion of the touch panel without being exposed to the outside, the connection portion can be prevented from being oxidized or It is scratched, so that the problem that one of the connections cannot be connected is avoided.

According to the embodiment of the present invention, when the product cost can be reduced while maintaining the isolation between the first electrode portion and the second electrode portion, a line between the connection portion and the first electrode portion cannot be connected. It is avoided, even in the case where the first electrode portion is formed with an alignment error due to an error in the formation of the first electrode portion.

The drawings are provided for easier understanding of the present invention, and the following drawings are incorporated by reference. The invention is illustrated by the accompanying drawings in which: FIG.

310‧‧‧Substrate

320‧‧‧Insulation

330‧‧‧First electrode section

335‧‧‧Second electrode section

340‧‧‧ functional layer

350‧‧‧Connecting Department

1 is a view of a touch panel in accordance with an exemplary embodiment of the present invention.

Figure 2 is a cross-sectional view of the touch panel taken along line 1A-A' in accordance with an embodiment of the present invention.

3 to 5 are cross-sectional views showing a method of fabricating a touch panel according to an embodiment of the invention.

6 to 14 are cross-sectional views of a touch panel according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it is noted that the detailed description of the components of the present invention will be omitted when the detailed description of the components of the present invention and the detailed description of the components of the present invention may make the focus of the present invention unclear. In addition, it should be understood that the shapes and dimensions of the elements shown in the figures may be exaggerated and are provided to illustrate the structure of the present invention so that it can be easily understood without reflecting the actual dimensions of the corresponding elements.

1 is a view of a touch panel in accordance with an exemplary embodiment of the present invention, and FIG. 2 is a cross-sectional view of the touch panel taken along line A-A' of FIG. 1 in accordance with an embodiment of the present invention.

The touch panel will be described with reference to FIGS. 1 and 2 in accordance with an embodiment of the present invention.

As shown in FIG. 2 , a touch panel according to an embodiment of the invention includes a substrate 310 , a connecting portion 350 , an insulating portion 320 , a first electrode portion 330 , and a second electrode portion 335 .

According to an embodiment of the present invention, as shown in FIG. 2, the connecting portion 350 is formed on the substrate 310.

Meanwhile, the substrate 310 may be constituted by a transparent window, and the connecting portion 350 may be formed of any one of carbon nanotubes (CNT), aluminum, gold, silver, zinc, chromium, nickel, titanium, and magnesium.

In addition, the connecting portion 350 may be formed of any one of a metal oxide, a nitride, and a fluoride.

At the same time, the connecting portion 350, the first electrode portion 330, and the second electrode portion At least one of the 335 may be formed in a mesh shape. In this regard, when at least one of the connection portion 350, the first electrode portion 330, and the second electrode portion 335 is formed in a mesh shape, the visibility of the touch panel can be increased. The insulating portion 320 may be formed on an upper portion of the connecting portion 350 formed as described above.

The insulating portion 320 is an element for isolating the connecting portion 350 from the second electrode portion 335.

In the present embodiment, as shown in FIG. 2, the second electrode portion 335 and the first electrode portion 330 may be formed on one of the upper portions of the insulating portion 320.

More specifically, the first electrode portion 330 is formed to entirely cover the substrate 310, the connection portion 350, and the insulating portion 320 electrically connected to each other via the connection portion.

In other words, the connecting portion 350 is formed on the substrate 310, and is connected to the first electrode portion 330, and the connecting portion 350 is disposed. The connecting portion 350 and the second electrode portion are disposed by the insulating portion 320. 335 isolation.

At the same time, the first electrode portion 330 and the second electrode portion 335 may be made of indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide ZnO (Zinc Oxide), and one nanometer carbon. A carbon nano tube (CNT), a silver nanowire, a conductive polymer, and a graphene are formed.

In addition, at least one of the connecting portion 350, the first electrode portion 330, and the second electrode portion 335 may be formed of an opaque material.

Meanwhile, a display according to another embodiment of the present invention includes the touch surface constructed as described above.

In more detail, the display may include: the touch panel; a driving portion for providing a driving signal to the touch panel; a liquid crystal display (LCD) module formed on the touch panel; and a a polarizing plate is formed on the touch panel, wherein the touch panel can be (as illustrated in FIG. 2 above), the substrate 310; the connecting portion 350 formed on the substrate 310; and the connecting portion electrically connected to the connecting portion An electrode portion 330; and the second electrode portion 335 isolated from the connection portion 350.

At the same time, the substrate 310 can be formed by a transparent window. The display further includes a transparent window formed on the touch panel, the LCD module, and the polarizing plate.

Meanwhile, the touch panel may be formed between the polarizing plate and the LCD module.

As described above, in the touch panel and the display according to the embodiment of the present invention, the connecting portion 350 that is electrically connected to the first electrode portion 330 is located in one of the touch panels. When the inner portion is not exposed to the outside, the connecting portion 350 can be prevented from being oxidized or scratched, and therefore, the connection of one of the connecting portions 350 is prevented from being connected.

3 to 5 are cross-sectional views illustrating a method of fabricating a touch panel according to an embodiment of the invention.

Referring to FIG. 3 to FIG. 5, a method of manufacturing a touch panel according to an embodiment of the present invention.

As shown in FIG. 3, the connecting portion 350 is formed on the substrate 310.

Thereafter, as shown in FIG. 4, the insulating portion 320 is formed over the upper portion of the connecting portion 350.

As shown in FIG. 5, the first electrode portion 330 and the second electrode portion 335 are formed on the upper portion of the insulating portion 320 formed as described above.

Accordingly, the connecting portion 350 and the first electrode portion 330 are electrically connected to each other.

That is, the connecting portion 350 is formed on an upper portion of the substrate 310 and electrically connected to the first electrode portion, and the connecting portion 350 is isolated from the second electrode portion 335 by the insulating portion 320.

According to the embodiment of the present invention, when the connecting portion that is electrically connected to the sensing electrode pattern portion is located at the inner portion of the touch panel without being exposed to the outside, the connecting portion can be prevented from being oxidized. Or it is cut, so that the connection of one of the connections cannot be avoided.

6 to 14 are cross-sectional views of a touch panel according to another embodiment of the present invention.

In still another embodiment of FIG. 6, the connecting portion 350 is formed over the substrate 310, and the insulating portion 320 is formed to entirely cover an upper surface of the connecting portion 350.

The first electrode portion 330 is formed on an outer circumference of one of the connection portions 350, and thus is connected to the connection portion 350, and the second electrode portion 335 is formed on an upper portion of the insulation portion 320.

As in the embodiment of FIG. 6, when the insulating portion 320 is formed to cover the entire insulation At the upper surface of the portion 350, by minimizing the exposure of the connecting portion 350, it is possible to effectively prevent the connecting portion from being oxidized or scratched.

In another embodiment of FIG. 7 , the connecting portion 350 is formed on the substrate 310 , and the insulating portion 320 is formed on the connecting portion 350 to enable the insulating portion 320 to cover the connecting portion 350 . A portion of the upper surface.

Therefore, when the insulating portion 320 is formed only on a portion of the upper surface of the connecting portion 350, the product cost is effectively reduced while maintaining the isolation between the first electrode portion 330 and the second electrode portion 335.

In still another embodiment of FIG. 8, the connecting portion 350 is formed on the substrate 310, and the insulating layer 320 is formed in the upper portion of the connecting portion 350. Thereafter, the first electrode portion 330 and the first portion The two electrode portion 335 is formed such that the first electrode portion 330 can be formed to partially overlap and cover the upper portion of the connecting portion 350.

Therefore, when the first electrode portion 330 is formed to partially overlap and cover the upper portion of the connecting portion 350, the connection between the connecting portion 350 and the first electrode portion 330 cannot be generated. There is no possibility that the first electrode portion is misaligned due to an error in the process of forming the first electrode portion.

In still another embodiment of FIG. 9, the connecting portion 350 is formed on the substrate 310. The insulating portion 320 is formed in the upper portion of the connecting portion 350. Thereafter, the first electrode portion 330 is formed and The second electrode portion 335 is such that the connecting portion 350 is entirely covered by the insulating portion 320 and the first electrode portion 330.

Therefore, when the connecting portion 350 is entirely covered by the insulating portion 320 and the first electrode portion 330, the connecting portion can be prevented from being oxidized or scratched by minimizing the exposure of the connecting portion 350.

In still another embodiment of FIG. 10, the connecting portion 350 is formed on the substrate 310, and the insulating portion 320 is formed in an upper portion of the connecting portion 350. Thereafter, the first electrode portion 330 is formed and The second electrode portion 335 is formed such that the upper surfaces of the first electrode portion 330 and the second electrode portion 335 have the same height.

Therefore, when the upper surfaces of the first electrode portion 330 and the second electrode portion 335 form the same height, the advantage is that the process can be easily implemented, and the touch panel The thickness can be formed more evenly.

In still another embodiment of FIG. 11, the connecting portion 350 is formed on the substrate 310. The insulating portion 320 is formed in the upper portion of the connecting portion 350. Thereafter, the first electrode portion 330 is formed and The second electrode portion 335 is covered by the first electrode portion 330 with the insulating portion 320 and a portion of the connecting portion 350.

Therefore, when the insulating portion 320 and a portion of the connecting portion 350 are covered by the first electrode portion 330, the advantage is that the connecting portion 330 can be more stably protected, and a line cannot be connected without generating Even a misalignment between the connecting portion 350 and the first electrode portion 330 does not occur.

In still another embodiment of FIG. 12, the connecting portion 350 is formed on the substrate 310. The insulating portion 320 is formed in the upper portion of the connecting portion 350. Thereafter, the first electrode portion 330 is formed and The second electrode portion 335 is such that the insulating portion 320 is not covered by the first electrode portion 330, and a wider region is wider than a portion of the substrate 310 previously covered by the first electrode portion 330.

Therefore, when the insulating portion 320 is not covered by the first electrode portion 330 and the width region is wider than the substrate 310 previously covered by the first electrode portion 330, the insulating portion 320 can form a ratio There is also a small area before, and the connection portion 350 can be protected more effectively.

In still another embodiment of FIG. 13, a functional layer 340 is formed over the substrate 310, and the connection portion 350 is formed over the functional layer 340. Further, the insulating portion 320 is formed in the upper portion of the connecting portion 350, and thereafter, the first electrode portion 330 and the second electrode portion 335 are formed.

The functional layer 340 can be composed of any one of a blackening layer, an adhesive layer, and a metal seed layer.

When the functional layer 340 is the blackening layer, the functional layer 340 may be formed of any one of a metal oxide, a nitride, and a fluoride. The blackening layer can prevent the connection portion 340 from being seen.

Meanwhile, when the functional layer 340 is the adhesive layer, the functional layer may be more stable to the connecting portion 350 on the substrate 310. On the formation of the connection layer 350, when the functional layer When the 340 is the metal seed layer, the functional layer allows the connection layer 350 to be easily formed on the substrate 310, and is stably adhered and fixed to the substrate 10.

In still another embodiment of FIG. 14, the connecting portion 350 is formed on the substrate 310, and the insulating portion 320 is formed at the upper portion of the connecting portion 350. Thereafter, the first electrode portion 330 and the second portion are formed. The electrode portion 335 has a groove formed in the insulating portion 320 so that the second electrode portion 335 can be imprinted in the insulating portion 320.

Therefore, when the second electrode portion 335 is formed by such a method in which the second electrode portion 335 is imprinted in the insulating portion, the second electrode portion 335 is not exposed to be prevented from being broken.

In view of the above, while the embodiments are described with reference to the embodiments of the present invention, it is understood that many other modifications and implementations that fall within the spirit and scope of the principles of the invention example. It is, therefore, to be understood that the invention is not limited by the description of the invention. Therefore, all modifications and embodiments that fall within the scope of the invention are deemed to be included within the scope of the invention.

330‧‧‧First electrode section

335‧‧‧Second electrode section

Claims (11)

A touch panel includes: a substrate; a connecting portion formed on the substrate; an insulating portion formed over and covering an upper surface of the connecting portion; a first electrode portion electrically connected to the connecting portion And a second electrode portion is isolated from the connecting portion, wherein a bottom surface of the connecting portion is entirely in contact with the substrate, wherein the connecting portion is disposed on the substrate at a fixed height, wherein the first electrode portion Only one side directly contacts one side of the connection. The touch panel of claim 1, wherein the first electrode portion is formed on an outer peripheral portion of the connecting portion. The touch panel of claim 2, wherein the connecting portion is formed of any one of a metal oxide, a nitride, and a fluoride. The touch panel of claim 1, wherein the connecting portion is formed by any one of a carbon nanotube, aluminum, gold, silver, tin, chromium, nickel, titanium, and magnesium. The touch panel of claim 1, wherein at least one of the connecting portion, the first electrode portion and the second electrode portion is formed of an opaque material. The touch panel of claim 1, wherein at least one of the first electrode portion and the second electrode portion is formed in a mesh shape. The touch panel of claim 1, wherein the first electrode portion or the second electrode portion is made of Indium Tin Oxide, Indium Zinc Oxide, and A zinc oxide ZnO (Zinc Oxide), a carbon nano tube (CNT), a silver nanowire, a conductive polymer, and a graphene are formed. The touch panel of claim 1, wherein the connecting portion comprises a plate shape. The touch panel of claim 1, wherein the connecting portion is configured in a grid form. The touch panel of claim 1, wherein the insulating portion and the connecting portion are interposed between the second electrode portion and the substrate. A display panel includes a touch panel, the touch panel includes: a substrate; a connecting portion formed on the substrate; an insulating portion formed and entirely covering an upper surface of the connecting portion; a first electrode portion And electrically connected to the connecting portion; and a second electrode portion is isolated from the connecting portion; a driving portion for providing a driving signal to the touch panel; and a liquid crystal display module formed on the touch panel And a polarizing plate is formed on the touch panel, wherein a bottom surface of the connecting portion is entirely in contact with the substrate, wherein the connecting portion is configured in a mesh shape, wherein the first electrode portion is directly on only one side a side contacting the connecting portion, wherein the connecting portion is disposed on the substrate at a fixed height.