KR20130086461A - Electrode forming method - Google Patents

Electrode forming method Download PDF

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Publication number
KR20130086461A
KR20130086461A KR1020120007289A KR20120007289A KR20130086461A KR 20130086461 A KR20130086461 A KR 20130086461A KR 1020120007289 A KR1020120007289 A KR 1020120007289A KR 20120007289 A KR20120007289 A KR 20120007289A KR 20130086461 A KR20130086461 A KR 20130086461A
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KR
South Korea
Prior art keywords
dye
electrode layer
electrode
forming
transparent electrode
Prior art date
Application number
KR1020120007289A
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Korean (ko)
Inventor
김재일
이종영
김상화
Original Assignee
삼성전기주식회사
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Publication date
Application filed by 삼성전기주식회사 filed Critical 삼성전기주식회사
Priority to KR1020120007289A priority Critical patent/KR20130086461A/en
Publication of KR20130086461A publication Critical patent/KR20130086461A/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/0036—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing Of Electric Cables (AREA)

Abstract

PURPOSE: An electrode formation method is provided to prevent damage to organic dye by mixing the organic dye and a dye protection agent. CONSTITUTION: A conductive transparent electrode layer is formed on a transparent circuit board. An electrode pattern is formed by selectively spraying coating liquid including dye agents to the conductive transparent electrode layer (120). The coating liquid is washed on the conductive transparent electrode layer (130). The electrode pattern is electrically deactivated and is dyed. The dye agent includes organic dye and a dye protection agent. The dye protection agent prevents damage to the organic dye. The dye protection agent is comprised of SiO2 or TiO2. [Reference numerals] (110) Forming process of an electrode layer; (120) Forming process of an electrode pattern; (130) Washing process

Description

Electrode Formation Method {ELECTRODE FORMING METHOD}

The present invention relates to a method of forming an electrode.

With the development of computers using digital technology, auxiliary devices of computers are being developed together. Personal computers, portable transmission devices, and other personal information processing devices use various input devices such as a keyboard and a mouse And performs text and graphics processing.

However, as the use of computers is gradually increasing due to the rapid progress of the information society, there is a problem that it is difficult to efficiently operate a product by using only a keyboard and a mouse which are currently playing an input device. Therefore, there is an increasing need for a device that is simple and less error-prone, and that allows anyone to easily input information.

In addition, the technology related to the input device is shifting beyond the level that satisfies the general functions, such as high reliability, durability, innovation, design and processing related technology, etc. In order to achieve this purpose, As a possible input device, a touch panel has been developed.

Such a touch panel can be used as a flat panel display device such as an electronic notebook, a liquid crystal display device (LCD), a plasma display panel (PDP), and an electro luminescence (EL) And is a tool used by a user to select desired information while viewing the image display apparatus.

The touch panel types include resistive type, capacitive type, electro-magnetic type, SAW type, surface acoustic wave type, and infrared type. Type). These various touch panels are adopted in electronic products in consideration of the problems of signal amplification, difference in resolution, difficulty of design and processing technology, optical characteristics, electrical characteristics, mechanical characteristics, environmental characteristics, input characteristics, durability, and economics. Currently, the most popular method is a capacitive touch panel capable of multi-touch.

However, in the capacitive touch panel according to the prior art, since the transparent electrode has a unique color, the shape of the transparent electrode is recognized by the user when patterning. For example, when the transparent electrode is patterned in a bar shape, the user recognizes the bar shape, and when the transparent electrode is patterned in a rhombus shape, the user recognizes the rhombus shape.

Therefore, the transparent electrode patterned in the touch panel according to the prior art not only interferes with the image output from the image display device, but also has a problem that the overall visibility is lowered.

In order to improve this, it is possible to dye the electrode using an organic dye, but the organic dye is damaged by ultraviolet rays and oxidants, there is a problem that does not function as a dye.

An embodiment of the present invention is to provide an electrode forming method for protecting an organic dye by mixing an organic dye and a dye protection agent to remove the color difference between the electrode and the non-electrode portion.

In the electrode forming method according to an embodiment of the present invention, the electrode layer forming process of forming a conductive transparent electrode layer on a transparent substrate and selectively applying a coating liquid containing an oxidizing agent and a dye to the conductive transparent electrode layer, the electrical inactivation and color difference is Including the electrode pattern forming process for forming a patterned electrode dyed to disappear, the dyeing agent includes an organic dye and a dye protection agent, the dye protection agent can prevent the damage of the organic dye.

In addition, the dye protection agent may be made of an inorganic material.

In addition, the inorganic material may be made of silicon dioxide (SiO 2 ) or titanium dioxide (TiO 2 ).

In addition, the oxidizing agent may be made of any one of sodium hypochlorite (NaOCl), potassium permanganate (KMnO4), potassium dichromate (K2Cr2O7) or amine oxide (amine-Oxide).

In addition, the dyeing agent may comprise a Prussian blue or methylene blue.

In addition, the conductive transparent electrode layer may be made of a conductive polymer.

In addition, the conductive polymer may be made of poly-3,4-ethylenedioxythiophene / polystyrenesulfonate (PEDOT / PSS).

In addition, the electrode pattern forming process may further include laminating a resist on the conductive transparent electrode layer, and the coating liquid may be applied after laminating the resist.

The method may further include a washing process of washing the coating liquid remaining on the conductive transparent electrode layer after the electrode pattern forming process.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings.

Prior to that, terms and words used in the present specification and claims should not be construed in a conventional and dictionary sense, and the inventor may properly define the concept of the term in order to best explain its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

According to the present invention, it is possible to prevent the organic dye from being damaged by ultraviolet rays and oxidants by mixing an organic dye and a dye protection agent that eliminate the color difference between the electrode and the non-electrode portion.

1 is a flowchart illustrating a method of forming an electrode according to an exemplary embodiment of the present invention.
2 to 4 are cross-sectional views showing the electrode forming method according to an embodiment of the present invention in the process order.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. It should be noted that, in the present specification, the reference numerals are added to the constituent elements of the drawings, and the same constituent elements are assigned the same number as much as possible even if they are displayed on different drawings. Furthermore, the present invention can be embodied in various different forms and is not limited to the embodiments described herein. In the following description of the present invention, a detailed description of related arts which may unnecessarily obscure the gist of the present invention will be omitted.

1 is a flow chart of an electrode forming method according to an embodiment of the present invention, Figures 2 to 4 is a cross-sectional view showing the electrode forming method according to an embodiment of the present invention in the process order.

Referring to FIG. 1, in the electrode forming method according to the exemplary embodiment of the present invention, the electrode 21 may be formed on one or both surfaces of the transparent substrate 10 including an electrode layer forming process 110 and an electrode pattern forming process 120. Form. In addition, after completing the electrode pattern forming process 120 may further include a washing process 130 to remove the unnecessary residual material.

Hereinafter, with reference to FIGS. 1 to 4, an embodiment of the present invention, which is an electrode forming method, will be described in detail.

<Examples>

Referring to FIG. 2, in the electrode layer forming process 110, the conductive polymer is stacked on the transparent substrate 10 to form the conductive transparent electrode layer 20 on one or both surfaces of the transparent substrate 10.

In this case, the conductive transparent electrode layer 20 may be formed by laminating the conductive polymer on the transparent substrate 10 through screen printing, but the method of forming the conductive transparent electrode layer of the present invention is not limited to screen printing, for example. Gravure printing, offset printing, inkjet printing and the like can be used.

In addition, the conductive polymer is formed using a conductive polymer including, for example, poly-3,4-ethylenedioxythiophene / polystyrenesulfonate (hereinafter referred to as PEDOT / PSS), polyaniline, polyacetylene or polyphenylenevinylene, or the like. can do. In this case, the conductive polymer further includes a liquid crystal polymer (LIQUID CRYSTAL POLYMER), it may be made of a conductive polymer composition mixed with the conductive polymer and the liquid crystal polymer (LIQUID CRYSTAL POLYMER).

Here, the liquid crystal polymer is a compound which simultaneously exhibits the characteristics of the liquid crystal and the polymer. The liquid crystal is an intermediate phase of a solid and a liquid, and unlike a solid, there is no positional order but has an orientational order. It exhibits inherent properties and distinguishes itself from liquids with no order.

As described above, the liquid crystal polymer retains the inherent directional characteristics of the liquid crystal as it is, and when mixed and coated with the conductive polymer composition, it affects the shape and arrangement of the conductive polymer. Accordingly, due to the high degree of order of the liquid crystal polymer, the order of the conductive polymer may also increase, and at the same time, the conductivity of the film made of such a composition may be rapidly increased.

In addition, the conductive polymer composition may further include a dispersion stabilizer. Ethylene glycol, sorbitol, and the like may be used as the dispersion stabilizer.

In addition, a binder, a surfactant, an antifoaming agent, or the like may be further added.

Meanwhile, the transparent substrate 10 may include polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyether sulfone (PES), glass, tempered glass, polycarbonate (PC), cyclic olefin polymer (COC), and polymethyl meta. Acrylate (PMMA), TAC (Triacetylcellulose), biaxially stretched polystyrene (K resin-containing biaxially oriented PS; BOPS) or mixtures thereof, and transparent films laminated thereon may be prepared.

In addition, in the capacitive structure, the transparent film uses a material having a high dielectric constant. Here, when the transparent film has a high dielectric constant, it has an advantage that the sensitivity is excellent as the capacitance is improved.

Therefore, the transparent film is PET (polyethylene terephthalate) having a dielectric constant of 2.9 to 3.5, glass having a dielectric constant of 7.5 to 8, silicon-based film having a dielectric constant of 2.5 to 7, urethane film having a dielectric constant of 6.5 to 7, 2.5 to Polymethylmethacrylate (PMMA) having a dielectric constant of 4.5, and polycarbonate (PC) having a dielectric constant of 2.5 to 3.5.

Referring to FIG. 3, the electrode pattern forming process 120 selectively applies a coating liquid 30 including an oxidizing agent and a dye to one side of the conductive transparent electrode layer 20 formed through the electrode layer forming process 110. .

4, after a predetermined time has passed after the coating liquid 30 is applied to one side of the conductive transparent electrode layer 20, the coating liquid 30 is included in the coating liquid 30 on one side of the conductive transparent electrode layer 20. As the oxidant is permeated, one side of the conductive transparent electrode layer 20 is electrically inactivated by the oxidant to form the non-electrode portion 22. Accordingly, the electrode 21 may be formed by selectively forming a pattern on the other side of the conductive transparent electrode layer 20 except for one side of the conductive transparent electrode layer 20.

At this time, the oxidizing agent may be made of any one of sodium hypochlorite (NaOCl), potassium permanganate (KMnO4), potassium dichromate (K2Cr2O7) or amine oxide (amine-Oxide), but the oxidizing agent of the present invention is not necessarily limited thereto. .

Meanwhile, when the conductive transparent electrode layer 20 is formed using PEDOT / PSS, the conductive transparent electrode layer 20 becomes blue. One of the conductive transparent electrode layer 20 is formed by an oxidant included in the coating liquid 30. The non-electrode portion 22 formed at the side part is changed into orange to generate a color difference with the electrode 21 formed at the other side of the conductive transparent electrode layer 20 having a blue color.

In this case, when the coating liquid 30 is included in the coating liquid 30 and selectively coated together with the oxidizing agent on one side of the conductive transparent electrode layer 20, one side of the conductive transparent electrode layer 20 which is discolored orange by the oxidizing agent is blue by the dyeing agent. It is dyed with color to eliminate color difference, and the visibility is improved.

Here, the dyeing agent includes an organic dye (50 to 90% by weight) and a dye protection agent (10 to 50% by weight). In this case, the dye protection agent surrounds the particles of the organic dye and prevents the organic dye from being damaged by ultraviolet rays and oxidizing agents. Here, the mixing ratio of the organic dye and the dye protection agent of the present invention is merely exemplary and is not necessarily limited thereto.

At this time, the organic dye may be made of Prussian blue or methylene blue, but the dyeing agent according to the embodiment of the present invention is not limited thereto.

In addition, the dye protection agent may be made of silicon dioxide (SiO 2 ) or titanium dioxide (TiO 2 ) which is an inorganic material, but the type of the dye protection agent according to the embodiment of the present invention is not necessarily limited thereto.

Here, for example, when the dye protection agent is made of silicon dioxide, the fine silicon dioxide may be dispersed in the silicone oil and mixed with the organic dye in the form of a silicone compound made of a sticky viscous liquid.

In addition, when the coating liquid 30 is applied to one side of the conductive transparent electrode layer 20, electrical deactivation and dyeing of one side of the conductive transparent electrode layer 20 may occur simultaneously.

In addition, the coating liquid 30 may be formed of a paste including an oxidizing agent, a dye, and glycerin, for example, but the coating liquid 30 according to the embodiment of the present invention is not limited thereto.

In addition, the coating solution 30 is, for example, the oxidizing agent (0.1wt% ~ 10, wt%), the dyeing agent (0.1 × 10 -8 wt% ~ 1 wt%) and glycerin (100wt% at 100wt% content ratio Except for the remaining residue content) may be made of a paste (paste), the coating liquid 30 according to an embodiment of the present invention is not limited thereto.

On the other hand, the electrode pattern forming process 120 further includes the step of laminating a resist (50) on the conductive transparent electrode layer 20, the coating liquid is applied after the resist laminated.

At this time, when the coating liquid 30 containing the oxidant is applied to the conductive transparent electrode layer 20, the resist 50 is laminated on the other side of the conductive transparent electrode layer 20, and the coating liquid 30 is coated on the conductive transparent electrode layer 20. The electrode pattern may be formed by applying to one side of the electrode to electrically inactivate only the portion where the resist 50 is not positioned.

In addition, an electrode wiring for receiving an electrical signal from the electrode 21 is printed on the edge of the electrode 21. Here, it is preferable to use silver paste (Ag paste) or a material composed of organic silver which is excellent in electrical conductivity as the material of the electrode wiring, but is not limited thereto, and a metal such as conductive polymer, carbon black (including CNT) and ITO Low resistance metals such as oxides and metals can be used.

Meanwhile, the electrode pattern forming process 120 according to the embodiment of the present invention may further include a heat treatment process to easily form the electrode 21 of the conductive transparent electrode layer 20.

Here, the heat treatment process is applied to the conductive transparent electrode layer 20 of the transparent substrate 10, the coating liquid 30 containing an oxidizing agent and a dye, and then heat-treated for 5 to 60 minutes at 50 ~ 150 ℃ easily conductive conductive electrode layer 20 Although the electrode 21 may be formed and the visibility may be improved, the temperature and time of the heat treatment process according to the embodiment of the present invention are not necessarily limited thereto.

Referring to FIG. 1, the cleaning process 130 removes the coating liquid 30 remaining on the outer surface of the conductive transparent electrode layer 20 by washing the conductive transparent electrode layer 20 with a cleaning liquid. Here, the washing liquid is made of distilled water, but the washing liquid used in the washing process 130 of the present invention is not limited thereto.

In addition, after immersing the transparent substrate 10 on which the conductive transparent electrode layer 20 is formed in a tank or a container containing distilled water, if a predetermined time passes, the coating liquid 30 remaining on the outer surface of the conductive transparent electrode layer 20 is removed. Taking out the transparent substrate 10 from the tube, the cleaning process 130 is terminated.

However, the method of cleaning the transparent substrate 10 of the present invention is not limited thereto, and for example, distilled water is sprayed onto the conductive transparent electrode layer 20, or the transparent substrate including the conductive transparent electrode layer 20 in flowing distilled water. 10 may be positioned to remove the remaining coating liquid 30 of the conductive transparent electrode layer 20.

Accordingly, by forming the electrode 21 on the transparent substrate 10 by the electrode forming method according to the embodiment of the present invention as described above, the electrode 21 is formed without physically damaging the shape of the conductive transparent electrode layer 20. can do.

Therefore, a step is not formed between the electrode 21 and the non-electrode portion 22, so that the adhesion of the transparent film or the transparent glass is easy, and visibility may be improved.

In addition, the dye protection agent to protect the organic dye can prevent the organic dye from being damaged by ultraviolet rays and oxidants.

Although the present invention has been described in detail through specific examples, this is for explaining the present invention in detail, and the method of forming an electrode according to the present invention is not limited thereto, and the general knowledge in the art within the technical spirit of the present invention. It is obvious that modifications and improvements are possible by those who have them.

Further, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

10: transparent substrate 20: conductive transparent electrode layer
21 electrode 22,23 non-electrode portion
30: coating liquid 50: resist

Claims (9)

An electrode layer forming process of forming a conductive transparent electrode layer on the transparent substrate; And
An electrode pattern forming process of selectively applying a coating liquid including an oxidizing agent and a dye to the conductive transparent electrode layer to form a patterned electrode which is electrically inactivated and dyed with no color difference;
The dyeing agent comprises an organic dye and a dye protecting agent, the dye protecting agent to prevent the damage of the organic dye.
The method according to claim 1,
The dye protecting agent is an electrode forming method, characterized in that made of an inorganic material.
The method according to claim 2,
The inorganic material is a method of forming an electrode, characterized in that consisting of silicon dioxide (SiO 2 ) or titanium dioxide (TiO 2 ).
The method according to claim 1,
The oxidizing agent is an electrode forming method, characterized in that made of any one of sodium hypochlorite (NaOCl), potassium permanganate (KMnO4), potassium dichromate (K2Cr2O7) or amine oxide (amine-Oxide).
The method according to claim 1,
The organic dye is an electrode forming method comprising a Prussian blue or methylene blue.
The method according to claim 1,
The conductive transparent electrode layer is an electrode forming method, characterized in that made of a conductive polymer.
The method of claim 6,
The conductive polymer is a method of forming an electrode, characterized in that consisting of poly-3,4-ethylenedioxythiophene / polystyrenesulfonate (PEDOT / PSS).
The method according to claim 1,
The electrode pattern forming process,
Further comprising the step of laminating a resist on the conductive transparent electrode layer,
And applying the coating solution after laminating the resist.
The method according to claim 1,
After forming the electrode pattern
And a washing process of washing the coating liquid remaining on the conductive transparent electrode layer.
KR1020120007289A 2012-01-25 2012-01-25 Electrode forming method KR20130086461A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101510644B1 (en) * 2013-10-28 2015-04-09 서울대학교산학협력단 method for Manufacturing of a Conductive Pattern and the Conductive Pattern using the Same
WO2016024743A1 (en) * 2014-08-13 2016-02-18 주식회사 동진쎄미켐 Method for forming transparent electrode and transparent electrode laminate

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101510644B1 (en) * 2013-10-28 2015-04-09 서울대학교산학협력단 method for Manufacturing of a Conductive Pattern and the Conductive Pattern using the Same
WO2016024743A1 (en) * 2014-08-13 2016-02-18 주식회사 동진쎄미켐 Method for forming transparent electrode and transparent electrode laminate
KR20160020230A (en) * 2014-08-13 2016-02-23 주식회사 동진쎄미켐 Manufacturing method of transparent electrod and transparent electrod laminate
CN106575552A (en) * 2014-08-13 2017-04-19 株式会社东进世美肯 Method for forming transparent electrode and transparent electrode laminate

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