JP2015045925A - Touch panel and display - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a capacitive touch panel which prevents scratches and oxidation of a metal bridge and avoids generation of a disconnection in the metal bridge.SOLUTION: A touch panel comprises a substrate 310, a connection part 350 formed on the substrate 310, an insulation part 320 formed on the connection part 350, a first electrode part 330 electrically connected to the connection part 350, and a second electrode part 335 insulated from the connection part 350.

Description

  The present invention relates to a touch panel and a display.

  As a touch panel of a portable terminal, a resistive film method, an electromagnetic induction method, an optical method, a capacitance method, and the like are used. In recent years, a capacitance type touch panel has been widely used.

  In general, the capacitive method is performed with a structure including two capacitive sensing layers, and the two capacitive detection layers are formed with a space between each other by an insulating material. . Such a configuration thickens the structure of the panel, and as a result goes against downsizing.

  Therefore, in order to solve such a problem, a technique for reducing the two capacitive sensing layers to one is used.

  In this way, in the touch panel composed of one capacitive sensing layer, not the two capacitive sensing layers, the first electrode and the second electrode are formed on the same surface on one substrate, An insulating layer is formed on the first electrode and the second electrode pattern using an insulating material, and a metal bridge is formed on the insulating layer to electrically connect the second electrodes separated from each other. .

  However, according to the prior art, the metal bridge is exposed to cause oxidation and a scratch problem occurs. When the metal bridge is configured to be 10 μm or less, disconnection occurs due to oxidation or scratch. There was a problem to do.

  The present invention has been made in order to solve the above-described problems, and has a structure in which a metal bridge that electrically connects the detection electrode pattern portions to each other is positioned inside the touch panel and is not exposed to the outside. Oxidation and scratching of the metal bridge is prevented, and disconnection of the metal bridge is prevented.

  Note that the present invention can maintain insulation between the first electrode portion and the second electrode portion and can further reduce the manufacturing cost, and can be displaced due to a process error when forming the first electrode portion. Even when this occurs, disconnection between the connection portion and the first electrode portion is prevented from occurring.

  A touch panel according to an embodiment of the present invention for solving the above-described problem includes a substrate, a connection portion formed on the substrate, an insulating portion formed on the connection portion, and an electrical connection to the connection portion. And a second electrode part insulated from the connection part.

  According to another embodiment of the present invention, the first electrode part is formed to cover a part of the upper surface of the connection part or the insulating part.

  According to still another embodiment of the present invention, the upper surface of the first electrode part is formed higher than the upper surface of the connection part or the insulating part.

  According to another embodiment of the present invention, the upper surface of the first electrode part is formed at the same height as the upper surface of the second electrode part.

  According to another embodiment of the present invention, the first electrode part is formed in a peripheral part where the connection part or the insulating part is laminated.

  According to another embodiment of the present invention, the insulating part is formed to cover the entire top surface of the connecting part.

  According to another embodiment of the present invention, the insulating part is formed to cover a part of the upper surface of the connecting part.

  According to another embodiment of the present invention, the method further includes a functional layer formed between the substrate and the connection part.

  According to still another embodiment of the present invention, the functional layer is one of a blackening layer, an adhesive layer, and a metal seed layer, for example.

  According to still another embodiment of the present invention, the blackening layer is made of any one of metal oxide, nitride, and fluoride, for example.

  According to still another embodiment of the present invention, the second electrode part is imprinted in the insulating part.

  According to still another embodiment of the present invention, the connection part may be any one of, for example, carbon nanotube (CNT), Al, Au, Ag, Sn, Cr, Ni, Ti, and Mg. Consists of.

  According to still another embodiment of the present invention, the connecting part is composed of any one of metal oxide, nitride and fluoride, for example.

  According to another embodiment of the present invention, at least one of the connection portion, the first electrode portion, and the second electrode portion is made of an opaque metal.

  According to still another embodiment of the present invention, at least one of the connection part, the first electrode part, and the second electrode part is configured in a mesh shape.

  According to still another embodiment of the present invention, the first electrode unit or the second electrode unit may be, for example, ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), ZnO (Zinc Oxide), carbon, and the like. It is composed of any one of a nanotube (CNT), a silver nanowire, a conductive polymer, and a graphene.

  According to an embodiment of the present invention, the substrate is, for example, a transparent window.

  A display according to an embodiment of the present invention includes a substrate, a connection part formed on the substrate, an insulating part formed on the connection part, a first electrode part electrically connected to the connection part, and the A touch panel composed of a second electrode part insulated from the connection part, a drive part for applying a drive signal to the touch panel, an LCD module formed on the touch panel, and a polarizing plate formed on the touch panel Including.

  According to another embodiment of the invention, the substrate is a transparent window, for example.

  According to another embodiment of the present invention, a transparent window may be further formed on one of the touch panel, the LCD module, and the polarizing plate.

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

  According to the present invention, the connection part that electrically connects the detection electrode pattern parts to each other is positioned inside the touch panel so as not to be exposed to the outside, thereby preventing the connection part from being oxidized and scratched. No disconnection occurs.

  According to the present invention, it is possible to maintain insulation between the first electrode portion and the second electrode portion, and to further reduce the manufacturing cost, and the position due to an error in the process when the first electrode portion is formed. Even when deviation occurs, disconnection between the connection portion and the first electrode portion is prevented from occurring.

1 is a diagram of a touch panel according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the touch panel of FIG. It is sectional drawing for demonstrating the manufacturing method of the touchscreen by one Example of this invention. It is sectional drawing for demonstrating the manufacturing method of the touchscreen by one Example of this invention. It is sectional drawing for demonstrating the manufacturing method of the touchscreen by one Example of this invention. FIG. 5 is a cross-sectional view of a touch panel according to another embodiment of the present invention. FIG. 6 is a cross-sectional view of a touch panel according to another embodiment of the present invention. FIG. 6 is a cross-sectional view of a touch panel according to another embodiment of the present invention. FIG. 6 is a cross-sectional view of a touch panel according to another embodiment of the present invention. FIG. 6 is a cross-sectional view of a touch panel according to another embodiment of the present invention. FIG. 6 is a cross-sectional view of a touch panel according to another embodiment of the present invention. FIG. 6 is a cross-sectional view of a touch panel according to another embodiment of the present invention. FIG. 6 is a cross-sectional view of a touch panel according to another embodiment of the present invention. FIG. 6 is a cross-sectional view of a touch panel according to another embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the present invention is not limited to these examples. Throughout the specification, the same components are denoted by the same reference numerals.

  FIG. 1 is a diagram of a touch panel according to an embodiment of the present invention.

  2 is a cross-sectional view taken along the line A-A 'of the touch panel of FIG. 1 according to an embodiment of the present invention.

  A touch panel according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

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

  According to an embodiment of the present invention, as shown in FIG. 1, the connection part 350 is formed on the substrate 310.

  At this time, the substrate 310 is formed of, for example, a transparent window, and the connection portion 350 is made of, for example, carbon nanotube (CNT), Al, Au, Ag, Sn, Cr, Ni, Ti, and Mg. Consists of either one.

  Alternatively, the connection part 350 is made of any one of metal oxide, nitride, and fluoride, for example.

  Meanwhile, the connection part 350 may be configured in a mesh shape, and at least one of the connection part 350, the first electrode part 330, and the second electrode part 335 as described above. When one is configured in a mesh shape, the visibility of the touch panel can be further improved.

  An insulating part 320 is formed on the connection part 350 formed as described above.

  The insulating part 320 is configured to insulate the connecting part 350 from the second electrode part 335.

  In the embodiment of FIG. 2, a second electrode part 335 and a first electrode part 330 are formed on the insulating part 320.

  More specifically, the first electrode part 330 is formed over the substrate 310, the connection part 350, and the insulating part 320, and the first electrode part 330 is connected to each other by the connection part 350.

  That is, the connection part 350 is formed on the substrate 310 to electrically connect the first electrode part 330 to each other, and the connection part 350 is insulated from the second electrode part 335 by the insulating part 320. Configured as follows.

  On the other hand, the first electrode unit 330 and the second electrode unit 335 include, for example, ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), ZnO (Zinc Oxide), carbon nanotubes (CNT; carbon nano tube), It is composed of any one of silver nanowires, conductive polymers, and graphene.

  Alternatively, at least one of the connection part 350, the first electrode part 330, and the second electrode part 335 may be made of an opaque metal.

  Meanwhile, a display according to an embodiment of the present invention may include a touch panel configured as described above.

  More specifically, the display includes the touch panel, a drive unit that applies a drive signal to the touch panel, an LCD module formed on the touch panel, and a polarizing plate formed on the touch panel. As described with reference to FIG. 2, the touch panel includes a substrate 310, a connection part 350 formed on the substrate 310, an insulating part 320 formed on the connection part 350, and an electric connection to the connection part 350. The first electrode part 330 is electrically connected, and the second electrode part 335 is insulated from the connection part 350.

  At this time, the substrate 310 is formed of, for example, a transparent window, and may further include a transparent window formed on any one of the touch panel, the LCD module, and the polarizing plate.

  At this time, the touch panel is formed between the polarizing plate and the LCD module.

  As described above, the touch panel and the display according to the embodiment of the present invention are configured to have a structure in which the connection part 350 that electrically connects the first electrode part 330 to each other is positioned inside the touch panel and is not exposed to the outside. Therefore, the connection portion 350 is prevented from being oxidized and scratched, and the connection portion 350 is not disconnected.

  3 to 5 are cross-sectional views for explaining a method of manufacturing a touch panel according to an embodiment of the present invention.

  A touch panel manufacturing method according to an embodiment of the present invention will be described with reference to FIGS.

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

  Thereafter, as shown in FIG. 4, an insulating part 320 is formed on the connection part 350.

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

  Thereby, the connection part 350 electrically connects the first electrode parts 330 to each other.

  That is, the connection part 350 is formed on the substrate 310 and electrically connects the first electrode part 330 to each other, but the connection part 350 is insulated from the second electrode part 335 by the insulation part 320. Configured to be.

  Therefore, according to the present invention, the connection portion that electrically connects the detection electrode pattern portions is positioned inside the touch panel and is not exposed to the outside, thereby preventing the connection portion from being oxidized or scratched. As a result, no disconnection occurs at the connection.

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

  In the embodiment of FIG. 6, the connection part 350 is formed on the substrate 310, and the insulating part 320 is formed so as to cover the entire upper surface of the connection part 350.

  The first electrode part 330 is formed around the connection part 350 and connected to the connection part 350, and the second electrode part 335 is formed on the insulation part 320.

  When the insulating part 320 is formed to cover the entire upper surface of the connection part 350 as in the embodiment of FIG. 6, oxidation and scratching of the connection part are minimized by minimizing the exposure of the connection part 350. It can prevent more positively.

  In the embodiment of FIG. 7, the connection part 350 is formed on the substrate 310 and the insulating part 320 is formed on the connection part 350, but the insulating part 320 covers a part of the upper surface of the connection part 350. Formed as follows.

  As described above, when the insulating part 320 is formed only on a part of the upper surface of the connection part 350, insulation can be maintained between the first electrode part 330 and the second electrode part 335, and the manufacturing cost can be further reduced. There is an advantage.

  In the embodiment of FIG. 8, the connection part 350 is formed on the substrate 310, the insulating part 320 is formed on the connection part 350, and then the first electrode part 330 and the second electrode part 335 are formed. The first electrode part 330 is formed to partially overlap and cover the upper part of the connection part 350.

  As described above, when the first electrode part 330 is formed so as to partially overlap and cover the upper part of the connection part 350, the first electrode part 330 may be displaced due to an error in the process when the first electrode part 330 is formed. Even when this occurs, no disconnection occurs between the connection portion 350 and the first electrode portion 330.

  In the embodiment of FIG. 9, the connection portion 350 is formed on the substrate 310, the insulating portion 320 is formed on the connection portion 350, and then the first electrode portion 330 and the second electrode portion 335 are formed. The entire connecting portion 350 is covered with the insulating portion 320 and the first electrode portion 330.

  As described above, when the connection part 350 is entirely covered with the insulating part 320 and the first electrode part 330, the exposure of the connection part 350 is minimized to oxidize the connection part. There is an advantage that scratches can be prevented.

  In the embodiment of FIG. 10, the connection part 350 is formed on the substrate 310, the insulating part 320 is formed on the connection part 350, and then the first electrode part 330 and the second electrode part 335 are formed. The upper surfaces of the first electrode part 330 and the second electrode part 335 are formed at the same height.

  Thus, when the upper surfaces of the first electrode portion 330 and the second electrode portion 335 are formed at the same height, there are advantages that the process is easy and the thickness of the touch panel can be configured more uniformly.

  In the embodiment of FIG. 11, the connection part 350 is formed on the substrate 310, the insulating part 320 is formed on the connection part 350, and then the first electrode part 330 and the second electrode part 335 are formed. The first electrode part 330 is configured to cover the connection part 350 together with a part of the insulating part 320.

  Thus, when the first electrode part 330 is configured to cover the connection part 350 together with a part of the insulating part 320, the connection part 350 and the connection part 350 and the first part are protected more stably. There is an advantage that disconnection does not occur even when an error in positional deviation between the electrode portions 330 occurs.

  In the embodiment of FIG. 12, the connecting portion 350 is formed on the substrate 310, the insulating portion 320 is formed on the connecting portion 350, and then the first electrode portion 330 and the second electrode portion 335 are formed. The first electrode part 330 is formed so as to cover a wider area of the substrate 310 without covering the insulating part 320.

  As described above, when the first electrode part 330 is formed so as to cover a wider area of the substrate 310 without covering the insulating part 320, the insulating part 320 is formed in a smaller area, and the connection part 350 is formed. It can be protected more efficiently.

  In the embodiment of FIG. 13, the functional layer 340 is formed on the substrate 310, and the connection portion 350 is formed on the functional layer 340. In addition, an insulating part 320 is formed on the connection part 350, and then a first electrode part 330 and a second electrode part 335 are formed.

  The functional layer 340 is formed of any one of a blackening layer, an adhesive layer, and a metal seed layer, for example.

  When the functional layer 340 is a blackened layer, the functional layer 340 may be formed of any one of metal oxide, nitride, and fluoride, and the blackened layer prevents the connection portion 350 from being visually recognized. can do.

  On the other hand, when the functional layer 340 is an adhesive layer, the connection portion 350 can be more stably adhered to the substrate 310 by the adhesive layer. When the functional layer 340 is a metal seed layer, a connection is established. The connection part 350 can be easily formed on the substrate 310 when the part 350 is formed, and can be stably attached and fixed.

  In the embodiment of FIG. 14, the connection portion 350 is formed on the substrate 310, the insulating portion 320 is formed on the connection portion 350, and then the first electrode portion 330 and the second electrode portion 335 are formed. A groove is formed in the insulating part 320 so that the second electrode part 335 is imprinted in the insulating part 320.

  As described above, when the second electrode part 335 is formed by being imprinted in the insulating part 320, the second electrode part 335 can be protected from being exposed and damaged. .

310 Substrate 320 Insulating part 330 First electrode part 335 Second electrode part 340 Functional layer 350 Connection part

Claims (10)

A substrate,
A connection formed on the substrate;
An insulating part formed on the connecting part;
A first electrode portion electrically connected to the connection portion;
A second electrode part insulated from the connection part;
Touch panel including.   The touch panel as set forth in claim 1, further comprising a functional layer formed between the substrate and the connection portion. The functional layer is
The touch panel according to claim 2, wherein the touch panel is any one of a blackening layer, an adhesive layer, and a metal seed layer. The blackening layer is
The touch panel according to claim 3, comprising any one of metal oxide, nitride, and fluoride. The second electrode part is
The touch panel as set forth in claim 1, wherein the touch panel is imprinted in the insulating part. The connecting portion is
The touch panel according to claim 1, wherein the touch panel is made of any one of carbon nanotubes (CNT), Al, Au, Ag, Sn, Cr, Ni, Ti, and Mg.   The touch panel as set forth in claim 1, wherein at least one of the connection part, the first electrode part, and the second electrode part is made of an opaque metal.   The touch panel as set forth in claim 1, wherein at least one of the connection part, the first electrode part, and the second electrode part is configured in a mesh shape. The first electrode part or the second electrode part is
ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), ZnO (Zinc Oxide), Carbon Nanotube (CNT), Silver Nanowire (Ag Nanowire), Conductive Polymer, and Graphene (Graphene) The touch panel according to claim 1, comprising any one of the touch panels. 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 connecting portion, and a second electrode insulated from the connecting portion; A touch panel composed of parts,
A drive unit for applying a drive signal to the touch panel;
An LCD module formed on the touch panel;
A polarizing plate formed on the touch panel;
Including display.

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