KR102074168B1 - Hybrid touch sensing electrode and preparing method thereof - Google Patents

Abstract

The present invention relates to a hybrid touch sensing electrode and a method for manufacturing the same, and more particularly, by including a conductive polarizer layer formed of a sensing pattern of metal nanowires oriented in either direction to have polarization, The present invention relates to a hybrid-type touch sensing electrode having excellent conductivity and polarization, and a method of manufacturing the same, which do not require a separate polarizer and thus realize a thinner display.

Description

Hybrid touch sensing electrode and method for manufacturing same

The present invention relates to a hybrid touch sensing electrode and a method of manufacturing the same.

The touch screen panel is an input device for inputting a user's command by selecting instructions displayed on a screen such as an image display device with a human hand or an object.

To this end, the touch screen panel is provided on the front face of the image display device to convert a contact position in direct contact with a human hand or an object into an electrical signal. Thus, the instruction content selected at the contact position is received as an input signal.

Since the touch screen panel can replace a separate input device connected to an image display device such as a keyboard and a mouse, its use range is gradually expanding.

As a method of implementing a touch screen panel, a resistive film method, a light sensing method, and a capacitive method are known. In the dual capacitive touch screen panel, a conductive sensing pattern is applied when a human hand or an object is touched. By detecting a change in capacitance formed in another sensing pattern or ground electrode, the contact position is converted into an electrical signal.

Such a touch screen panel is generally attached to the outer surface of a flat panel display device such as a liquid crystal display device and an organic light emitting display device to be commercialized. Therefore, the touch screen panel requires high transparency and thin thickness.

In addition, in recent years, a flexible display is being developed. In this case, a touch screen panel attached to the flexible display is also required to have a flexible characteristic.

However, the technology for manufacturing such a flexible touch screen panel has not yet been fully established, and thus, it is still difficult to manufacture a flexible display having ultra-thin, fully flexible characteristics.

Korean Patent Publication No. 2013-35158 discloses a pattern forming method and a transparent electrode, a touch screen, a solar cell, a micro heater, a transparent thin film transistor, a flexible display panel, a flexible solar cell, an e-book, a thin film transistor, an electromagnetic shielding sheet, and a flexible substrate. A printed circuit board is disclosed.

Korean Patent Publication No. 2013-35158

An object of the present invention is to provide a touch sensing electrode having polarization at the same time.

An object of the present invention is to provide a touch sensing electrode that can realize a thinner display.

An object of the present invention is to provide a manufacturing method capable of manufacturing a touch sensing electrode of a thin film without damaging the substrate.

1. A hybrid-type touch sensing electrode comprising a conductive polarizer layer in which a metal nanowire oriented in either direction to have polarization is formed in a sensing pattern.

2. In the above 1, wherein the metal is at least one selected from the group consisting of gold, silver, copper, aluminum, iron, nickel, titanium, telenium and chromium, hybrid touch sensing electrode.

3. In the above 1, wherein the width of the metal nanowire is 30 to 100nm, hybrid type touch sensing electrode.

4. In the above 1, wherein the spacing between the metal nanowire is 50 to 300nm, hybrid type touch sensing electrode.

5. In the above 1, wherein the sensing pattern of the conductive polarizer layer has a first pattern formed in the first direction and the second pattern formed in the second direction, hybrid type touch sensing electrode.

6. In the above 5, the hybrid touch sensing electrode further comprises a bridge electrode for electrically connecting the second pattern and the insulator formed at the intersection of the bridge electrode and the first pattern.

7. In the above 1, the hybrid touch sensing electrode having a substrate below the conductive polarizer layer.

8. In the above 7, the substrate is glass, polyethylene ether phthalate, polyethylene naphthalate, polyethylene terephthalate, polycarbonate, polyarylate, polyetherimide, polyethersulfonic acid, polyimide, polyacrylate, polymethylmethacryl Hybrid type touch sensing electrode selected from the group consisting of a rate and a cycloolefin polymer.

9. In the above 7, the substrate further comprises a conductive inorganic oxide layer formed on one surface, the conductive polarizer layer is a hybrid type touch sensing electrode formed on the conductive inorganic oxide layer.

10. The hybrid touch sensing electrode of 9 above, wherein the conductive inorganic oxide layer is etched with the same sensing pattern as the conductive polarizer layer.

11. In the above 7, the hybrid touch sensing electrode further comprising an optical function layer on the lower substrate.

12. An image display device including the hybrid touch sensing electrode of any one of 1 to 11 above.

13. The image display apparatus according to 12 above, which is a touch screen, a liquid crystal display, a transparent display, a flexible display, or an OLED display.

14. The composition for forming a conductive polarizer layer including a metal nanowire and a solvent on a substrate is printed by electro-hydro-dynamic printing, and the metal nanowires oriented in either direction to have polarity are obtained. Method of manufacturing a hybrid-type touch sensing electrode is formed a conductive polarizer layer comprising.

15. The method according to the above 14, further comprising the step of firing the conductive polarizer layer.

16. The method according to the above 15, wherein the firing is performed by irradiating a UV laser, IR laser or CO ₂ laser.

17. The method of claim 14, further comprising forming a sensing pattern by etching the conductive polarizer layer.

18. The method of claim 17, wherein the etching is performed such that the sensing pattern has a first pattern formed in a first direction and a second pattern formed in a second direction.

19. The method according to the above 17, wherein the etching is performed by irradiating a UV laser, IR laser or CO ₂ laser.

20. In the above 14, the substrate is glass, polyethylene ether phthalate, polyethylene naphthalate, polyethylene terephthalate, polycarbonate, polyarylate, polyetherimide, polyethersulfonic acid, polyimide, polyacrylate, polymethylmethacryl A method of manufacturing a hybrid touch sensing electrode selected from the group consisting of a rate and a cycloolefin polymer.

21. The method of claim 14, wherein the substrate includes a conductive inorganic oxide layer formed on one surface, and the conductive polarizer layer is formed on the conductive inorganic oxide layer.

22. The method of manufacturing the hybrid type touch sensing electrode of 21 above, simultaneously etching the conductive inorganic oxide layer and the conductive polarizer layer.

23. The method according to the above 18, further comprising forming an insulator at the intersection of the bridge electrode and the bridge electrode and the first pattern to electrically connect the second pattern.

24. The method of 23 above, wherein the bridge electrode and the insulator are physical vapor deposition (Physical Vapor Deposition, PVD), chemical vapor deposition (CVD), gravure off set printing, reverse off set A method of manufacturing a hybrid touch sensing electrode performed by a method selected from the group consisting of printing, inkjet printing, and gravure printing.

25. The method according to the above 14, further comprising the step of bonding the optical functional layer on the lower substrate.

Since the hybrid touch sensing electrode of the present invention has polarization in itself, it does not require a separate polarizer.

The hybrid touch sensing electrode of the present invention enables a thinner display.

The hybrid touch sensing electrode of the present invention is excellent in conductivity and polarization.

The manufacturing method of the present invention can produce a touch sensing electrode of a thin film without damaging the substrate.

1 is a schematic perspective view of a hybrid touch sensing electrode according to an embodiment of the present invention.
2 is a schematic front view of a hybrid touch sensing electrode according to an embodiment of the present invention.
3 is an enlarged view of a unit sensing pattern of a conductive polarizer layer according to an embodiment of the present invention.
4 is a process flowchart of a method of manufacturing a hybrid touch sensing electrode according to an embodiment of the present invention.
5 is a process flowchart of a method of manufacturing a hybrid touch sensing electrode according to an embodiment of the present invention.

The present invention includes a conductive polarizer layer formed in a sensing pattern of the metal nanowires oriented in either direction to have polarization, and thus does not require a separate polarizer because the polarizer itself has polarization, thereby realizing a thinner display. The present invention relates to a hybrid touch sensing electrode having excellent conductivity and polarization, and a method of manufacturing the same.

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

The hybrid touch sensing electrode of the present invention includes a conductive polarizer layer in which metal nanowires oriented in either direction are formed in a sensing pattern to have polarization.

1 and 2 are schematic perspective and front views of a hybrid touch sensing electrode according to an embodiment of the present invention.

3 is an enlarged view of a unit sensing pattern of a conductive polarizer layer according to an embodiment of the present invention. In FIG. 3, the metal nanowires are oriented in the uniaxial direction of the conductive polarizer layer 100, and the metal nanowires 110 oriented in one direction thus convert natural light passing through the conductive polarizer layer 100 into linearly polarized light. As such, the hybrid type touch sensing electrode of the present invention may be polarized. Accordingly, since a separate polarizer is not required, a thinner display may be implemented and thus may be applied to a flexible display.

The one direction is not particularly limited, and may be, for example, a long axis direction or a short direction of the conductive polarizer layer 100.

Each row or column of the metal nanowires 110 oriented in one direction in the unit sensing pattern may be formed of one long unit metal nanowire, or may be composed of a plurality of short unit metal nanowires.

In FIG. 3, the metal nanowires are disposed in a short direction of the conductive polarizer layer 100, and each row is shown as one unit metal nanowire, but this is not limited thereto.

The metal is not particularly limited as long as it is a metal having excellent conductivity, and examples thereof include gold, silver, copper, aluminum, iron, nickel, titanium, telenium, and chromium, and preferably silver. These can be used individually or in mixture of 2 or more types.

The metal nanowires are not particularly limited in width as long as they provide excellent polarization to function as polarizers. For example, the metal nanowires may be 30 to 100 nm, and preferably 50 to 80 nm.

In such aspects, the distance between the metal nanowires may be 50 to 300 nm, and preferably 80 to 150 nm, but is not limited thereto.

In the touch sensing electrode of the present invention, the conductive polarizer layer 100 includes a substrate 200 under the conductive polarizer layer 100.

The conductive polarizer layer 100 may be formed by applying a composition for forming a conductive polarizer layer including a metal nanowire and a solvent on the substrate 200.

The content of the metal nanowires is not particularly limited within the range capable of performing the above function, for example, the concentration may be 1 to 500 mg / ml, and preferably 5 to 100 mg / ml.

The solvent is not particularly limited and, for example, distilled water, methanol, ethanol, acetone, methyl ethyl ketone, isopropyl alcohol, butyl alcohol, ethylene glycol, polyethylene glycol, tetrahydrofuran, dimethylformamide, dimethylacetamide , Hexane, cyclohexanone, toluene, chloroform, dichlorobenzene, dimethylbenzene, pyridine, aniline and the like. These can be used individually or in mixture of 2 or more types.

The thickness of the conductive polarizer layer 100 may be appropriately adopted, and may be, for example, 50 to 200 nm.

The substrate 200 is not particularly limited as long as it is thin, flexible, and has excellent transmittance. For example, the substrate may be glass, polyethylene ether phthalate, polyethylene naphthalate, polyethylene terephthalate, polycarbonate, polyarylate, polyetherimide, poly Ether sulfonic acid, polyimide, polyacrylate, polymethyl methacrylate, cycloolefin polymer and the like.

The substrate 200 may further include a conductive inorganic oxide layer 300 formed on one surface. In such a case, the conductive polarizer layer 100 is formed on the conductive inorganic oxide layer 300 so that the surface resistance can be further reduced and the touch sensitivity can be significantly improved.

The conductive inorganic oxide is not particularly limited as long as it is a flexible, transparent and excellent conductive material. For example, indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc oxide (IZTO), Cadmium tin oxide (CTO) and the like, and may be preferably indium zinc oxide in terms of providing better flexibility.

The conductive inorganic oxide layer 300 may be appropriately adopted without being particularly limited in thickness within a range capable of performing its function, for example, may be 10 to 50nm. When the thickness of the conductive inorganic oxide layer 300 is within the above range, the transmittance is excellent, and the effect of improving conductivity and flexibility can be maximized.

The conductive polarizer layer 100 has a sensing pattern 120 formed of metal nanowires oriented in either direction.

The sensing pattern 120 may include a first pattern 120a formed in a first direction and a second pattern 120b formed in a second direction.

The first pattern 120a and the second pattern 120b are disposed in different directions. For example, each may be arranged in the same row or column, but is not limited thereto.

The first pattern 120a and the second pattern 120b provide information about the X coordinate and the Y coordinate of the touched point. Specifically, when a human hand or an object comes into contact with the transparent substrate 200, the capacitance changes according to the contact position toward the driving circuit via the first pattern 120a, the second pattern 120b, and the position detection line. Is passed. Then, the contact position is determined by converting the change in capacitance into an electrical signal by the X and Y input processing circuit (not shown) or the like.

In this regard, the first pattern 120a and the second pattern 120b are formed on the same layer, and each pattern must be electrically connected to detect a touched point. However, since the first pattern 120a is connected to each other but the second pattern 120b is separated from each other in an island form, an additional bridge electrode ( 140) is required.

However, since the bridge electrode 140 should not be electrically connected to the first pattern 120a, the bridge electrode 140 is formed on a different layer from the sensing pattern 120 in the conventional hybrid touch sensing electrode. Since the bridge electrode 140 must be electrically blocked from the first pattern 120a, an insulating layer is formed for this purpose. The bridge electrode 140 electrically connects the second pattern 120b through a contact hole that is a portion where the insulating layer is not formed in the insulating layer region.

However, the hybrid touch sensing electrode of the present invention includes an insulator 130 formed at the intersection of the bridge electrode 140 and the first pattern 120a instead of the separate insulating layer. Since a separate insulating layer is not required, the display may be made of a thinner film, and thus, a display having a thin structure may be applied to a flexible display. At this time, the bridge electrode 140 is directly connected to the second pattern 120b without a separate contact hole.

Bridge electrode 140 may be applied to any transparent electrode material known in the art without limitation, for example, indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc oxide (IZTO) And cadmium tin oxide (CTO), PEDOT (poly (3,4-ethylenedioxythiophene)), carbon nanotubes (CNT), metal wires, and the like, and these may be used alone or in combination of two or more thereof. Preferably indium tin oxide (ITO) may be used. The metal used for a metal wire is not specifically limited, For example, silver (Ag), gold, aluminum, copper, iron, nickel, titanium, telenium, chromium, etc. are mentioned. These can be used individually or in mixture of 2 or more types.

The insulator 130 may be applied to a transparent insulating material known in the art without limitation, and may be formed in a required pattern using a transparent photosensitive resin composition or a thermosetting resin composition including a metal oxide or an acrylic resin such as silicon oxide. Can be.

The sensing pattern 120 according to the present invention may be formed by a method known in the art, for example, may be formed by etching the conductive polarizer layer 100.

When the substrate 200 further includes the conductive oxide layer 300, the conductive inorganic oxide layer 300 may also be etched together in the same sensing pattern.

 The hybrid touch sensing electrode of the present invention may further include an optical function layer (not shown) under the substrate 200.

The optical functional layer is not particularly limited, and examples thereof include a protective layer, a phase difference layer, an antireflection layer, a hard coating layer, an antistatic layer, and the like.

As described above, the hybrid touch sensing electrode of the present invention is provided with polarization at the same time, thereby enabling a thinner display. In addition, it is remarkably excellent in transparency, electrical conductivity, and flexibility, and can be usefully used as an electrode of an image display device such as a touch screen, a liquid crystal display, a transparent display, a flexible display, an OLED display, and the like.

The present invention also provides a method for manufacturing a hybrid touch sensing electrode.

4 is a flowchart illustrating a manufacturing process of the hybrid touch sensing electrode according to the exemplary embodiment of the present invention. Hereinafter, the present invention will be described in more detail with reference to this.

In the method of manufacturing a hybrid touch sensing electrode of the present invention, a composition for forming a conductive polarizer layer including a metal nanowire and a solvent on a substrate 200 is printed by electro-hydraulic (Electro-Hydro-Dynamic) printing method. The conductive polarizer layer 100 including the metal nanowires 110 oriented in either direction to have photogenicity is formed.

Electro-Hydro-Dynamic printing is a technique of ejecting ink using an electric field. More specifically, when a constant voltage is applied between the injection nozzle and the substrate 200, an electric field is generated, and at the same time, charges are concentrated on the surface of the fluid near the nozzle. At this time, if the pressure to inject the fluid from the nozzle is increased by the electric field and the electric field generated by the electric surface, the spherical surface is transformed into the shape of Taylor Cone of 49.3 ° angle, which is much smaller than the nozzle size. Or spray occurs. Taylor cone formation by an electric field can generate actual droplets or single droplets of several hundred nm to several micrometers in size from large nozzles of relatively tens of micrometers to several hundred micrometers.

When the composition for forming a conductive polarizer layer is printed on the substrate 200 by an electrohydraulic printing method, the metal nanowires contained therein are oriented in either direction by an electric field.

The metal nanowires 110 oriented in one direction may convert natural light passing through the polarized light into linearly polarized light, thereby allowing the hybrid type touch sensing electrode of the present invention to have polarization. Accordingly, since a separate polarizer is not required, a display having a thinner structure may be implemented and thus may be applied to a flexible display.

The one direction is not particularly limited, and may be, for example, a long axis direction or a short direction of the conductive polarizer layer 100.

The metal nanowires are not particularly limited in width as long as they provide excellent polarization to function as polarizers. For example, the metal nanowires may be 30 to 100 nm, and preferably 50 to 80 nm.

In such aspects, the distance between the metal nanowires may be 50 to 300 nm, and preferably 80 to 150 nm, but is not limited thereto.

The thickness of the conductive polarizer layer 100 may be appropriately adopted, and may be, for example, 100 to 500 nm.

The substrate 200 on which the conductive polarizer layer 100 is formed may be the substrate 200 within the aforementioned range.

Similarly, the substrate 200 may further include a conductive inorganic oxide layer 300 on one surface, in which case the conductive polarizer layer 100 is formed on the conductive inorganic oxide layer 300.

After printing, the method may further include drying the conductive polarizer layer 100 at 15 to 100 ° C. for 30 seconds to 20 minutes as necessary.

In addition, if necessary, the method of manufacturing the hybrid touch sensing electrode of the present invention may further include firing the conductive polarizer layer 100.

By firing the conductive polarizer layer 100, the solvent component in the composition for forming the conductive polarizer layer may be volatilized to further improve adhesion to the substrate 200 of the conductive polarizer layer 100.

The firing method is not particularly limited, and may be based on methods known in the art, for example, by laser irradiation.

Available laser is not particularly limited, for example, may be made of a UV laser, IR laser, CO ₂ laser, a UV laser is preferable when considering the energy amount, such as passing.

The output of the laser used is not particularly limited, and may be, for example, 0.5 to 10 W (watts). When the output is within the above range, the adhesive polarizer 100 may be sufficiently baked without damaging the conductive polarizer layer 100 to improve adhesion to the substrate 200.

In addition, the main wavelength range of the laser may be slightly improved visibility, workability, etc. when using the range of 300 to 1100nm, but there may be additional effects even if using a light source outside this region, which is Since it can be used selectively as desired, this area is not specifically limited.

The method of manufacturing the hybrid touch sensing electrode of the present invention further includes forming the sensing pattern 120 by etching the conductive polarizer layer 100.

The present invention can be applied to a flexible display since the conductive polarizer layer 100 is etched to form the sensing pattern 120 without forming a separate sensing pattern layer, thereby realizing a display having a thinner structure. have.

When the substrate 200 further includes the conductive inorganic oxide layer 300, the conductive inorganic oxide layer 300 is simultaneously etched with the same sensing pattern.

The etching method is not particularly limited as long as it can form the pattern, and examples thereof include dry etching using wetted plasma, wet etching, laser etching, and the like, to suppress damage to the substrate 200 and form a precise pattern. In terms of that may be preferably by laser etching.

Available laser is not particularly limited, for example, may be made of a UV laser, IR laser, CO ₂ laser, a CO ₂ laser is preferred when considering the energy amount, such as passing.

The output of the laser to be used is not particularly limited, and may be, for example, 0.5 to 40 W (watts). When the output is within the above range, the adhesive polarizer 100 may be sufficiently baked without damaging the conductive polarizer layer 100 to improve adhesion to the substrate 200.

In addition, the main wavelength range of the laser may be slightly improved visibility, workability, etc. when using the range of 300 to 1100nm, but there may be additional effects even if using a light source outside this area, especially Since it can be used selectively as desired, this area is not specifically limited.

Etching is performed such that the sensing pattern includes the first pattern 120a formed in the first direction and the second pattern 120b formed in the second direction.

The first pattern 120a and the second pattern 120b are disposed in different directions. For example, each may be arranged in the same row or column, but is not limited thereto.

The present invention further includes forming an insulator 130 at the intersection of the bridge electrode 140 and the bridge electrode 140 and the first pattern 120a to electrically connect the second pattern 120b.

The bridge electrode 140 and the insulator 130 may be formed by various thin film deposition techniques such as physical vapor deposition (PVD) and chemical vapor deposition (CVD). For example, it may be formed by reactive sputtering, which is an example of a physical vapor deposition method. It may also be formed by a printing process. In this printing process, various printing methods such as gravure offset, reverse off set, gravure printing, inkjet printing, and the like may be used. In particular, when the bridge electrode 140 and the insulator 130 are formed by a printing process, the bridge electrode 140 and the insulator 130 may be formed of a printable paste material. For example, it may be formed of carbon nanotubes (CNTs), conductive polymers, and silver nano wire inks.

The bridge electrode 140 and the insulator 130 may be formed in a printing process in terms of minimizing damage to the substrate 200 and simplifying the process to improve process efficiency.

The present invention may further include bonding an optical function layer (not shown) to the lower portion of the substrate 200.

4 is a process flow diagram according to one embodiment of this case.

The optical function layer may be bonded to the lower portion of the substrate 200 which has been subjected to the above process, or the optical process layer may be performed after the optical function layer is bonded to the lower portion of the substrate 200, and the process order is not particularly limited.

The optical functional layer is not particularly limited, and examples thereof include a protective layer, a phase difference layer, an antireflection layer, a hard coating layer, an antistatic layer, and the like.

The bonding method is not particularly limited and may be bonded through an adhesive known in the art.

Hereinafter, preferred examples are provided to aid the understanding of the present invention, but these examples are merely illustrative of the present invention and are not intended to limit the scope of the appended claims. It will be apparent to those skilled in the art that various changes and modifications can be made to the present invention, and such modifications and changes belong to the appended claims.

Example  One. Hybrid type  Fabrication of Touch Sensing Electrodes

A 20 nm thick indium zinc oxide (IZO) layer was formed on a 50 μm thick cycloolefin protective film.

Thereafter, a composition for forming a conductive polarizer layer including isopropyl alcohol having a concentration of 25 mg / ml of silver nanowires on the indium zinc oxide layer was coated to have a thickness of 100 nm by electro-hydraulic (Electro-Hydro-Dynamic) printing. The conductive polarizer layer including the metal nanowires oriented in the uniaxial direction to have a light property was formed. Thereafter, the formed conductive polarizer layer was dried at 80 ° C. for 10 minutes, and irradiated with a UV laser having a wavelength of 360 nm at an output of 1 W for 3 minutes to be fired.

Next, the first and second patterns were formed by etching the conductive polarizer layer and the lower indium zinc oxide layer by irradiating a CO ₂ laser having a wavelength of 1064 nm on the fired conductive polarizer layer with an output of 30 W.

Next, the insulator 130 is formed by printing the composition for forming an insulator comprising polysiloxane, an acrylic binder and a solvent at an intersection with a bridge electrode to be formed later on the first pattern by an inkjet printing method to form the nanometal particles and the solvent. The bridge electrode 140 for electrically connecting the second pattern 120b was formed by printing the composition for forming the bridge electrode 140 including the reverse offset printing method.

Example  2

A hybrid type touch electrode was manufactured in the same manner as in Example 1, except that the composition for forming a conductive polarizer layer included isopropyl alcohol at a concentration of 30 mg / ml of silver nanowires.

Example  3

A hybrid type touch sensing electrode was manufactured in the same manner as in Example 1, except that the composition for forming a conductive polarizer layer included isopropyl alcohol at a concentration of 35 mg / ml of silver nanowires.

Experimental Example

(1) polarization degree and transmittance measurement

After cutting the touch sensing electrodes of Examples 1 to 3 in size of 4 cm x 4 cm, the transmittance was measured with an ultraviolet visible spectrometer (V-7100, JASCO). At this time, the degree of polarization is defined by the following equation (1).

[Equation 1]

Polarization degree (P) = [(T ₁ -T ₂ ) / (T ₁ + T ₂ )] ^1/2

(Wherein T ₁ is the parallel transmittance obtained when the pair of polarizers are arranged in parallel with the absorption axis, and T ₂ is the orthogonal transmittance obtained when the pair of polarizers are arranged in the state where the absorption axes are orthogonal) .

(2) conductivity measurement

The surface resistance of the touch sensing electrodes of Examples 1 to 3 was measured with a non-contact surface resistance measuring instrument (EC80P, NAPSON). The center part was measured by non-contact by the electromagnetic induction method, and the results are shown in Table 1 below.

division Polarization degree (%) Transmittance (%) Conductivity (Ω / □) Example 1 75 90 80 Example 2 88 86 30 Example 3 95 78 10

Referring to Table 1, it was confirmed that the hybrid touch sensing electrodes of Examples 1 to 3 exhibited good levels of polarization even without a separate polarizer. Accordingly, a thinner display can be realized.

As the degree of polarization increased, the conductivity was also excellent, and the transmittance was slightly decreased, but was generally good.

100: conductive polarizer layer 110: metal nanowires oriented in one direction
120: detection pattern 120a: first pattern
120b: second pattern 130: insulator
140: bridge electrode 200: substrate
300: conductive inorganic oxide layer

Claims (25)

Board;
A conductive inorganic oxide layer formed on an upper surface of the substrate; And
And a conductive polarizer layer in contact with the conductive inorganic oxide layer, the conductive polarizer layer formed of a sensing pattern composed of metal nanowires oriented in one direction to have polarization on the conductive inorganic oxide layer.
The hybrid touch sensing electrode of claim 1, wherein the metal is at least one selected from the group consisting of gold, silver, copper, aluminum, iron, nickel, titanium, telenium, and chromium.
The hybrid touch sensing electrode of claim 1, wherein a width of the metal nanowire is 30 to 100 nm.
The hybrid touch sensing electrode of claim 1, wherein a spacing between the metal nanowires is 50 to 300 nm.
The hybrid touch sensing electrode of claim 1, wherein the sensing pattern of the conductive polarizer layer includes a first pattern formed in a first direction and a second pattern formed in a second direction.
The hybrid touch sensing electrode of claim 5, further comprising a bridge electrode electrically connecting the second pattern and an insulator formed at an intersection point of the bridge electrode and the first pattern.
delete The method of claim 1, wherein the substrate is glass, polyethylene ether phthalate, polyethylene naphthalate, polyethylene terephthalate, polycarbonate, polyarylate, polyetherimide, polyethersulfonic acid, polyimide, polyacrylate, polymethylmethacrylate and Hybrid type touch sensing electrode selected from the group consisting of cycloolefin polymer.
delete The hybrid touch sensing electrode of claim 1, wherein the conductive inorganic oxide layer is etched with the same sensing pattern as the conductive polarizer layer.
The hybrid touch sensing electrode of claim 1, further comprising an optical function layer under the substrate.
An image display device comprising the hybrid touch sensing electrode of claim 1.
The image display apparatus according to claim 12, which is a touch screen, a liquid crystal display, a transparent display, a flexible display, or an OLED display.
Forming a conductive inorganic oxide layer on the substrate; And
A conductive polarizer layer-forming composition including metal nanowires and a solvent is printed on the conductive inorganic oxide layer directly by electro-hydro-dynamic printing, and the metal is oriented in one direction to have polarization. A method of manufacturing a hybrid touch sensing electrode comprising the step of forming a conductive polarizer layer composed of nanowires.
The method of claim 14, further comprising firing the conductive polarizer layer.
The method of claim 15, wherein the firing is performed by irradiating a UV laser, an IR laser, or a CO ₂ laser.
The method of claim 14, further comprising forming a sensing pattern by etching the conductive polarizer layer.
The method of claim 17, wherein the etching is performed such that the sensing pattern has a first pattern formed in a first direction and a second pattern formed in a second direction.
The method of claim 17, wherein the etching is performed by irradiating a UV laser, an IR laser, or a CO ₂ laser.
The method of claim 14, wherein the substrate is glass, polyethylene ether phthalate, polyethylene naphthalate, polyethylene terephthalate, polycarbonate, polyarylate, polyetherimide, polyethersulfonic acid, polyimide, polyacrylate, polymethylmethacrylate and A method of manufacturing a hybrid touch sensing electrode selected from the group consisting of cycloolefin polymers.
delete The method of claim 14, wherein the conductive inorganic oxide layer and the conductive polarizer layer are simultaneously etched.
The method of claim 18, further comprising forming a bridge electrode electrically connecting the second pattern, and forming an insulator at an intersection point of the bridge electrode and the first pattern.
The method of claim 23, wherein the bridge electrode and the insulator are physical vapor deposition (PVD), chemical vapor deposition (CVD), gravure off set printing, reverse off set printing, A method of manufacturing a hybrid touch sensing electrode performed by a method selected from the group consisting of inkjet printing and gravure printing.
The method of claim 14, further comprising bonding an optical functional layer to the lower portion of the substrate.

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