WO2015034291A1 - Panneau tactile utilisant un film photosensible conducteur transparent et procédé pour fabriquer ce panneau - Google Patents

Panneau tactile utilisant un film photosensible conducteur transparent et procédé pour fabriquer ce panneau Download PDF

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Publication number
WO2015034291A1
WO2015034291A1 PCT/KR2014/008329 KR2014008329W WO2015034291A1 WO 2015034291 A1 WO2015034291 A1 WO 2015034291A1 KR 2014008329 W KR2014008329 W KR 2014008329W WO 2015034291 A1 WO2015034291 A1 WO 2015034291A1
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WIPO (PCT)
Prior art keywords
touch panel
transparent
transparent conductive
electrode
photosensitive film
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PCT/KR2014/008329
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English (en)
Korean (ko)
Inventor
박준영
정주현
송영진
노수천
서초란
한원희
이성림
허용
장성욱
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주식회사 티메이
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Publication of WO2015034291A1 publication Critical patent/WO2015034291A1/fr

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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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • 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

Definitions

  • the present invention relates to a manufacturing method of a touch panel, and in particular, a touch panel using a transparent conductive photosensitive film to implement a touch sensor and a touch panel and a manufacturing method of laminating a bottom electrode and a top electrode without using an adhesive layer. It is about.
  • the touch panel is an input device that can be easily used by anyone by interactively and intuitively operating a computer or the like by touching a button with a finger.
  • Such a touch panel has a resistive method, a capacitive method, an infrared method, an ultrasonic method, and the like, depending on a method of sensing a touch, and a resistive method is currently used, but it is advantageous for durability and light and simple characteristics in the future. The use of capacitive methods will be increased.
  • the capacitive touch panel particularly the touch screen, has an indium tin oxide (ITO) made of a transparent conductor on a transparent insulator film such as polyethylene terephthalate (PET) or glass, and a silver paste on the edge of the ITO.
  • ITO indium tin oxide
  • PET polyethylene terephthalate
  • a pad made of a lead wire is laminated up and down by adding an adhesive layer or an insulator layer.
  • ITO is composed of X-axis ITO having X-axis electrostatic electrodes formed at equal intervals and Y-axis ITO having Y-axis electrostatic electrodes formed at equal intervals so as to be stacked.
  • the touch screen formed as above is a controller that receives a touch signal according to a user's touch and outputs a coordinate signal.
  • the electrostatic electrodes arranged side by side on the X axis or the Y axis are arranged at different distances from the lead wire. Since different electrostatic electrodes are disposed between them, each electrostatic electrode has different electrical characteristics when viewed from the part where the lead wire is connected.
  • FIG. 1 is a view showing a state in which a bottom electrode of an X-axis capacitive electrode and a top electrode of a Y-axis capacitive electrode are laminated in a conventional capacitive touch panel.
  • the bottom electrode 10 having the X-axis capacitive electrode and the top electrode 20 having the Y-axis capacitive electrode are manufactured, respectively, and then laminated using the OCA (Optical Clear Adhesive) 30. Then, a window is attached to manufacture a touch panel.
  • OCA Optical Clear Adhesive
  • the bottom electrode 10 and the top electrode 20 form a plurality of electrostatic electrodes on the upper surface of the insulator layer 40 as ITO 50 and are connected to one end of each electrostatic electrode to exclude the window area of the touch panel.
  • the wiring electrode representing the metal lead in the edge region is formed of the metal layer 60.
  • an optical clear adhesive (OCA) 30 is essentially added. Accordingly, the conventional touch panel has a disadvantage in that it is expensive because two sheets of ITO film and OCA 30 are used to make one touch panel product.
  • the present invention provides a touch panel and a manufacturing method for laminating a bottom electrode and a top electrode without using an adhesive layer by implementing a touch sensor using a transparent conductive photosensitive film. Its purpose is to.
  • a plurality of first axis electrostatic electrodes corresponding to the window area of the touch panel and spaced apart at intervals of a predetermined distance are formed by selectively removing the transparent conductive layer and connected to one end of each first axis electrostatic electrode. Selectively removing the metal layer by forming a plurality of metal conductors which are edge regions of the metal layer; And
  • a transparent conductive photosensitive film of a transparent material After forming a transparent conductive photosensitive film of a transparent material on the upper surface of the touch panel, and selectively removes the transparent conductive photosensitive film from the layer formed of the transparent conductive photosensitive film, each of which is spaced apart from each of the first axis electrostatic electrode by a predetermined distance And forming a second electrode of the touch electrode that is an edge region of the touch panel connected to one end of each of the second axis electrostatic electrodes.
  • first metal conductors which are edge regions of the touch panel connected to one end of each first axis electrostatic electrode by selectively removing the metal layer
  • second metal conductors which are edge regions of the touch panel, connected to one end of the axis electrostatic electrode.
  • a plurality of first axis electrostatic electrodes corresponding to the window area of the touch panel and spaced apart at intervals of a predetermined distance, and a plurality of metal conductors that are edge regions of the touch panel connected to one end of each first axis electrostatic electrode; Forming a metal mesh structure having a fine pattern including one metal layer;
  • a transparent conductive photosensitive film of a transparent material After forming a transparent conductive photosensitive film of a transparent material on the upper surface of the touch panel, and selectively removes the transparent conductive photosensitive film from the layer formed of the transparent conductive photosensitive film, each of which is spaced apart from each of the first axis electrostatic electrode by a predetermined distance And forming a second electrode of the touch electrode that is an edge region of the touch panel connected to one end of each of the second axis electrostatic electrodes.
  • each of the second shaft electrostatic capacities crossing a predetermined distance from each of the first axis electrostatic electrode in the layer formed of the second transparent conductive photosensitive film Forming an electrode by selectively removing the second transparent conductive photosensitive film;
  • first metal conductors which are edge regions of the touch panel connected to one end of each first axis electrostatic electrode by selectively removing the metal layer
  • second metal conductors which are edge regions of the touch panel, connected to one end of the axis electrostatic electrode.
  • An insulator layer formed of an organic insulator or an inorganic insulator, a transparent conductive layer formed on an upper surface of the insulator layer and corresponding to the window region of the touch panel and forming a plurality of first axis electrostatic electrodes spaced at intervals of a predetermined distance;
  • a bottom electrode forming a plurality of metal conductors, which are edge regions of the touch panel, connected to one end of the plurality of first axis electrostatic electrodes;
  • a transparent conductive photosensitive film made of a transparent material is used as a wiring electrode, which is an edge region of each touch panel connected to one end of each of the second axis electrostatic electrode and the second axis electrostatic electrode, which intersects with each of the first axis electrostatic electrodes at a predetermined distance.
  • the transparent conductive photosensitive film includes a top electrode formed of a transparent insulating material, and a transparent photosensitive resin layer made of a transparent insulating material, and a transparent conductive material which is a conductive material of a transparent material stacked thereon, and an upper surface of the bottom electrode.
  • the top electrode is laminated on the transparent photosensitive resin layer.
  • An insulator layer formed of an organic insulator or an inorganic insulator, a transparent conductive layer formed on an upper surface of the insulator layer and corresponding to the window region of the touch panel and forming a plurality of first axis electrostatic electrodes spaced at intervals of a predetermined distance;
  • a bottom electrode forming a plurality of first metal conductors, which are edge regions of a touch panel connected to one end of the plurality of first axis electrostatic electrodes;
  • a transparent conductive photosensitive film made of a transparent material that corresponds to the window area of the touch panel and forms a respective second axis electrostatic electrode crossing the first axis electrostatic electrode at a predetermined distance from the first axis electrostatic electrode, and one end of the second axis electrostatic electrode
  • a top electrode forming a plurality of second metal conductors, which are edge regions of the touch panel connected to the touch panel, wherein the transparent conductive photosensitive film comprises a transparent photosensitive resin layer made of a transparent insulating material, and a transparent material stacked thereon It is made of a transparent conductive material of the conductive material, and the top electrode on the upper surface of the transparent conductive layer is laminated by a transparent photosensitive resin layer.
  • An insulator layer made of an organic insulator or an inorganic insulator, a plurality of first axis electrostatic electrodes formed on an upper surface of the insulator layer, corresponding to the window region of the touch panel, and spaced apart at regular intervals, and each first axis electrostatic
  • a bottom electrode for forming a plurality of metal conductors, which are edge regions of a touch panel connected to one end of the electrode, in a fine pattern metal mesh structure formed of one metal layer;
  • a transparent conductive photosensitive film made of a transparent material is used as a wiring electrode, which is an edge region of each touch panel connected to one end of each of the second axis electrostatic electrode and the second axis electrostatic electrode, which intersects with each of the first axis electrostatic electrodes at a predetermined distance.
  • the transparent conductive photosensitive film includes a top electrode formed of a transparent insulating material, and a transparent photosensitive resin layer made of a transparent insulating material, and a transparent conductive material which is a conductive material of a transparent material stacked thereon, and an upper surface of the bottom electrode.
  • the top electrode is laminated on the transparent photosensitive resin layer.
  • a first transparent conductive photosensitive film made of a transparent material that corresponds to the window area of the touch panel and is spaced apart at intervals of a predetermined distance, and is connected to one end of each first axis electrostatic electrode;
  • a bottom electrode forming a plurality of first metal conductors, which are edge regions of the touch panel;
  • a second transparent conductive photosensitive film made of a transparent material corresponding to the window area of the touch panel and forming respective second axis electrostatic electrodes crossing the first axis electrostatic electrodes at a predetermined distance from each other, and each second axis electrostatic
  • a top electrode forming a plurality of second metal conductors, which are edge regions of the touch panel connected to one end of the electrode, wherein the first transparent conductive photosensitive film and the second transparent conductive photosensitive film are made of a transparent insulating material. It is made of a transparent photosensitive resin layer and a transparent conductive material which is a conductive material of a transparent material laminated thereon, the top electrode on the top surface of the bottom electrode is laminated by the transparent photosensitive resin layer of the second transparent conductive photosensitive film.
  • the present invention has the effect of lowering the raw material cost and the process cost by implementing a touch sensor using a transparent conductive photosensitive film.
  • the present invention has the effect of slimming the electrode through the use of a transparent conductive photosensitive film of about 5 ⁇ m because OCA is not used because the laminated with the light-transmissive photosensitive resin layer when the bottom electrode and the top electrode is laminated.
  • the present invention has the effect of improving the productivity by simplifying the manufacturing process of the existing touch panel.
  • FIG. 1 is a view showing a state in which a bottom electrode of an X-axis capacitive electrode and a top electrode of a Y-axis capacitive electrode are laminated in a conventional capacitive touch panel.
  • FIGS. 2 to 4 are diagrams showing a method of manufacturing a touch panel using a transparent conductive photosensitive film according to a first embodiment of the present invention with a layer structure in a side view.
  • FIG. 5 is a plan view illustrating a method of manufacturing a touch panel using a transparent conductive photosensitive film according to a first embodiment of the present invention.
  • FIG. 6 is a perspective view illustrating a touch panel using a transparent conductive photosensitive film according to a first embodiment of the present invention.
  • FIG. 7 is a plan view illustrating a method of manufacturing a touch panel using a transparent conductive photosensitive film according to a second embodiment of the present invention.
  • FIG. 8 is a view conceptually showing a patterning method of a conductive polymer according to a second embodiment of the present invention.
  • FIG. 9 is a diagram illustrating a method of manufacturing a touch panel using a transparent conductive photosensitive film according to a third exemplary embodiment of the present invention in a layer structure from the side.
  • FIG. 10 is a plan view illustrating a method of manufacturing a touch panel using a transparent conductive photosensitive film according to a third embodiment of the present invention.
  • FIGS. 2 to 4 are diagrams showing a method of manufacturing a touch panel using a transparent conductive photosensitive film according to a first embodiment of the present invention in a layer structure from the side
  • FIG. 5 is a transparent according to the first embodiment of the present invention.
  • 6 is a plan view illustrating a method of manufacturing a touch panel using a conductive photosensitive film
  • FIG. 6 is a perspective view illustrating a touch panel using a transparent conductive photosensitive film according to a first embodiment of the present invention.
  • an index matching layer 112 is formed on an upper surface of the insulator layer 110.
  • the transparent conductive layer 120 is formed thereon, and the metal layer 130 is formed on the upper surface of the transparent conductive layer 120.
  • the insulator layer 110 is formed of an organic insulator or an inorganic insulator of a transparent material, and the organic insulator is polyimide or polyethylene terephthalate (PET), polyethylenenaphthalate (PEN), polycarbonate, PC), acrylic plastic material, and the inorganic insulator is made of glass material and optically treated glass material.
  • Index-Matching (112) is a coating to form an insulating film layer using an insulating material having a difference in refractive index with the transparent conductive layer 120, and to treat the presence or absence of ITO after the ITO (120) pattern to be,
  • the index matching layer 112 forms a pattern on the transparent conductive layer 120, and then improves the visibility phenomenon due to the difference in reflectance between the portions with and without the transparent conductive layer 120.
  • the index matching layer 112 is an insulating layer having a refractive index that can improve the visibility of the circuit of the transparent conductive layer 120.
  • the index matching layer 112 means that the lower layer of the ITO 120 is optically treated so that the portion of the ITO and the portion of the non-existent ITO film are not detected by the eye when the capacitive ITO film is manufactured.
  • the index matching layer 112 may raise SiO 2 , TiO 2, Ceo 2, or the like by a dry method (deposition), or may perform a chemical treatment by a wet method.
  • the index matching layer 112 may have an insulating layer such as SiO 2 , TiO 2, Ceo 2, or Nb 2 O 5 having a refractive index capable of compensating for the height of the transparent conductive layer 120 in a single or multiple layer structure. Form.
  • a transparent conductive layer 120 is a transparent conductive oxide (Transparent Conducting Oxide, TCO) and formed of a conductive material of transparent material, such as, specifically, including ITO or IZO (Indium Zinc Oxide) or ITO, IZO, SnO 2, AZO It is formed of a transparent conductive material.
  • TCO Transparent Conducting Oxide
  • the transparent conductive layer (ITO film, etc.) 120 of the present invention includes an index matching layer (insulation layer) 112 on the bottom surface.
  • the metal layer 130 includes Cu, Cu alloy, Ag, Ag alloy, Ni + Cr, Ni + Ni alloy, Mo / Ag, Mo / Al / Mo, Ni + Cr / Cu / Ni + Cr, Ni alloy / Cu, Ni All conductive materials including alloy / Cu / Ni alloy, Mo / APC, Cu / Ni + Cu + Ti, Ni + Cu + Ti / Cu / Ni + Cu + Ti, APC (silver, palladium, copper alloy), carbon It is a concept which is formed by the well-known technique of printing, vapor deposition, paste, and application
  • the metal layer 130 may be formed of an Ag paste, or a variety of methods may be used, such as depositing copper.
  • the metal layer 130 may use various metals and is preferably copper or aluminum in consideration of ease of manufacture and electrical conductivity.
  • the metal layer 130 may be formed by a known method such as laminating, vapor deposition, or coating.
  • the present invention forms a first photosensitive material 140 on the upper surface of the metal layer 130, the first pattern formed UV irradiation using the artwork film 142 forms a pattern on the first photosensitive material 140 (exposure), and forms an open pattern on the first photosensitive material 140 using a weak alkali solution (developing) ).
  • the present invention illustrates the first artwork film 142 in which the pattern is formed
  • the present invention is not limited thereto, and any pattern tool may be used, and using the equipment for directly implementing the pattern without the pattern tool. An exposure process may also be performed.
  • the process of forming the first photosensitive material 140 is formed by coating a liquid photoresist or laminating a dry film.
  • a coating process may be used, and in the case of using an insulating material of SiO 2 or TiO 2 , a deposition process may be used.
  • the present invention uses an acidic chemical to the first photosensitive material 140 having an open pattern to form the transparent conductive layer 120 and the metal layer 130. Etching or simultaneous etching is performed, and the first photosensitive material 140 is removed using a strong alkali chemical to form the electrostatic electrode pattern 122 and the wiring electrode pattern 132 (etching process, peeling process). 3 (e) and 3 (f) are subjected to lamination, exposure, development, etching, and peeling by a process of primary photolithography.
  • the electrostatic electrode pattern 122 is a portion corresponding to the window area (the area where the screen is displayed) of the touch panel, and represents a bar pattern indicating a plurality of electrostatic electrodes formed spaced at a predetermined distance apart, and the user's touch pattern Represents an area.
  • the electrostatic electrode pattern 122 of the present invention includes a plurality of X-axis electrostatic electrodes 122b and each of the Y-axis electrostatic electrodes 122a crossing at right angles with a predetermined distance from the X-axis electrostatic electrodes 122b. Include.
  • the wiring electrode pattern 132 is a circuit representing a metal lead of an edge region excluding the window region of the touch panel.
  • the wiring electrode pattern 132 is connected outwardly from one end of each electrostatic electrode to detect the user's touch pattern and leads. It includes a metal electrode portion of the FPCB bonding region connected to one end of the electrode is exposed to the outside and coupled with the flexible printed circuit board (FPCB).
  • the wiring electrode pattern 132 of the present invention is spaced apart from the wiring electrode pattern 132a connected to one end of each of the Y-axis electrostatic electrodes 122a and the respective Y-axis electrostatic electrodes 122a by a predetermined distance in a right angle direction.
  • a wiring electrode pattern 132b connected to one end of the plurality of intersecting X-axis electrostatic electrodes 122a is formed through selective etching.
  • the present invention provides a metal layer formed on the electrostatic electrode pattern 122 which is a window area of a touch panel by a process of secondary photolithography. 130 is selectively removed to leave the transparent conductive layer 120.
  • the present invention forms a plurality of X-axis electrostatic electrodes 122b corresponding to the window region of the touch panel and spaced apart at intervals of a predetermined distance from the transparent conductive layer 120.
  • a plurality of metal conductors 132b which are edge regions of the touch panel connected to one end of each of the X-axis electrostatic electrodes 122b, are formed of the metal layer 130.
  • the process of secondary photolithography is subjected to laminating, exposure, developing, etching, and peeling processes which are the same processes as those of the above-described primary photolithography.
  • the present invention includes a plurality of X-axis electrostatic electrodes 122b made of a transparent conductive layer 120 and a wiring made of a metal layer 130.
  • a transparent conductive photosensitive film 160 of a transparent material is formed on the upper surface of the touch panel (laminating, coating or deposition process).
  • the transparent conductive photosensitive film 160 includes a transparent photosensitive resin layer 162 and a transparent conductive material 164 stacked thereon.
  • the thickness of the transparent conductive photosensitive film 160 is generally 1-100 ⁇ m, preferably 2.5-50 ⁇ m, and 2.5-10 ⁇ m may be used for mass productivity and cost reduction. That is, the top electrode 200 may be made of a transparent conductive photosensitive film 160, thereby making it possible to slim down the thickness.
  • the transparent photosensitive resin layer 162 includes a transparent dry film, an organic insulator or an inorganic insulator of a transparent material as a transparent insulating material.
  • the transparent conductive material 164 is a conductive and photosensitive transparent material, carbon nanotube (CNT), graphene, conductive polymer, silver nanowires (AGNW), hybrid AGNW ( CNT + AGNW), formed of a transparent conductive material composed of hybrid graphene (AGNW + graphene) and the like, and conductive polymer, Cu, Cu alloy, Ag, Ag alloy, Ni + Cr, Ni + Ni alloy, Mo / Ag, Mo / Al / Mo, Ni + Cr / Cu / Ni + Cr, Ni alloy / Cu, Ni alloy / Cu / Ni alloy, Mo / APC, Cu / Ni + Cu + Ti, Ni + Cu + Ti / Cu / Ni + The concept includes all conductive materials such as Cu + Ti, carbon, and transparent conducting oxide (TCO).
  • TCO transparent conducting oxide
  • the present invention is transparent in the layer formed of the transparent conductive photosensitive film 160 by the photolithography exposure and development process.
  • the photosensitive resin layer 162 and the transparent conductive material 164 stacked thereon are selectively removed to connect the plurality of Y-axis electrostatic electrodes 122a and 164 to one end of each of the Y-axis electrostatic electrodes 122a and 164.
  • the wiring electrode patterns 132a and 164 are formed.
  • a pattern is formed on the transparent conductive photosensitive film 160 (exposure), and is transparent using a weak alkali solution.
  • a pattern is formed on the conductive photosensitive film 160 (development).
  • the pattern formed on the transparent conductive photosensitive film 160 has a plurality of Y-axis electrostatic electrodes 122a and 164 and the wiring electrode patterns 132a and 164 as shown in FIGS. 4 (j) and 5 (c). It means a pattern in which an area not applicable is opened.
  • the present invention illustrates the second artwork film 154 having a pattern
  • the present invention is not limited thereto. Any pattern tool having a pattern may be used, and any device that directly implements the pattern without the pattern tool may be used. An exposure process may also be performed.
  • the plurality of X-axis electrostatic electrodes and the Y-axis electrostatic electrodes are formed in a bar pattern, but the present invention is not limited thereto and may be variously applied, such as a square, a circle, a diamond, a polygon, and a random pattern.
  • the bottom electrode 100 forms a plurality of X-axis electrostatic electrodes on the upper surface of the insulator layer 110 as the ITO 120 and is connected to one end of each X-axis electrostatic electrode.
  • the wiring electrode patterns 132b and 130 of the edge region excluding the window region of the panel are formed of the metal layer 130.
  • the top electrode 200 includes a plurality of Y-axis electrostatic electrodes 122a and 164 made of a transparent conductive photosensitive film 160 including a transparent photosensitive resin layer 162 and a transparent conductive material 164 and each of the Y-axis electrostatic electrodes ( The wiring electrode patterns 132a and 164 connected to one end of the 122a and 164 are formed.
  • the light-transmissive photosensitive resin layer 162 serves as insulation and a contact agent between the top electrode 200 and the bottom electrode 100.
  • the present invention uses only one sheet of the ITO film and the metal film (bottom electrode 100), and in the case of the top electrode 200, since the metal trace is short, both the transparent electrode and the metal electrode are made of the transparent conductive material 164 without metal. Can be implemented.
  • FIG. 7 is a plan view illustrating a method of manufacturing a touch panel using a transparent conductive photosensitive film according to a second embodiment of the present invention
  • FIG. 8 conceptually illustrates a method of patterning a conductive polymer according to a second embodiment of the present invention. It is a figure shown.
  • the manufacturing method of the touch panel of the second embodiment of the present invention will be described in detail with the focus on the differences, and the description overlapping with the above-described manufacturing method of the touch panel of the first embodiment of the present invention will be omitted.
  • the metal layer 130 is formed on the upper surface of the transparent conductive layer 120.
  • one end of each of the plurality of X-axis electrostatic electrodes 122b and 120 formed of the transparent conductive layer 120 and the X-axis electrostatic electrodes 122b and 120 formed of the metal layer 130 is formed by a photolithography process. Wiring electrode patterns 132b and 130 connected thereto are formed.
  • the present invention forms a transparent photosensitive resin layer 160 including a transparent photosensitive resin layer 162 made of a transparent insulating material on the upper surface of the touch panel, and a transparent conductive material 164 made of a conductive polymer thereon. .
  • the conductive polymer 164 may be polythiophene-based, polypyrrole-based, polyaniline-based, polyacetylene-based, polyphenylene-based, or the like, and is particularly preferable for the PEDOT / PSS compound among polythiophene-based compounds.
  • One or more types of the above-described organic compounds may be mixed and used.
  • the conductivity may be increased.
  • the conductive polymer 164 maintains conductivity by the structure of the double bond benzene ring.
  • the conductive polymer 164 can be removed by the wet process, the wet process, as shown in Figure 8, by reacting with the etchant (ETCHANT) 170 to boil the structure of the double bond benzene ring to make a single bond conductive Can be eliminated.
  • ECHANT etchant
  • the conductive polymer 164 is made of the non-conductive polymer 166, the polymer layer is maintained as it is, but the conductivity is lost, and the conductivity does not return to the double bond without a special catalyst.
  • the present invention forms a transparent conductive photosensitive film 160 of a transparent material on the upper surface of the touch panel, and then a portion corresponding to the plurality of Y-axis electrostatic electrodes 122a and 164 and a respective Y-axis electrostatic electrode by a wet process.
  • the non-conductive polymer 166 maintains the conductivity of the conductive polymer 164 of the wiring electrode patterns 132a and 164 connected to one end of the 122a and 164, and loses the conductivity of the conductive polymer 164 in the non-pattern region. (Conductive polymer patterning process).
  • the present invention covers the FPCB bonding area to which the printed circuit board is bonded with a conductive polymer to prevent corrosion of the oxidation generating area, to prevent the problem of metal cracking by external pressure, and to act as a buffer during FPCB bonding, and to separate sealing and water repellent.
  • the coating process is omitted, reducing the process cost.
  • the present invention has excellent visibility in terms of visibility by implementing a touch sensor by using the characteristics of the conductive polymer, and thus an index matching layer process is unnecessary.
  • the present invention has advantages in terms of productivity and cost because the coating speed of the conductive polymer is superior to that of ITO or metal deposition.
  • FIG. 9 is a view illustrating a method of manufacturing a touch panel using a transparent conductive photosensitive film according to a third embodiment of the present invention in a layer structure from the side
  • FIG. 10 is a transparent conductive photosensitive film according to a third embodiment of the present invention. It is a figure which showed the manufacturing method of the touchscreen using the plane.
  • an index matching layer is formed on an upper surface of the insulator layer 110. And forming a transparent conductive layer 120 thereon, and then forming a plurality of X-axis electrostatic electrodes 122b and 120 in a layer formed of the transparent conductive layer 120 by a photolithography process. do.
  • the present invention forms a plurality of X-axis electrostatic electrodes 122b including the transparent conductive layer 120, and then A transparent conductive photosensitive film 160 of transparent material is formed on the upper surface.
  • the present invention provides a transparent photosensitive resin layer in a layer formed of a transparent conductive photosensitive film 160 by an exposure and development process of photolithography. 162 and the transparent conductive material 164 stacked thereon are selectively removed to form a plurality of Y-axis electrostatic electrodes 122a and 164.
  • the metal layer 130 is formed by a photolithography process. Selectively removes the wiring electrode pattern 132b connected to one end of each of the X-axis electrostatic electrodes 122b and 120, and the wiring electrode connected to one end of each of the Y-axis electrostatic electrodes 122a and 160.
  • the pattern 132a is formed simultaneously.
  • the wiring electrode pattern 132b of the bottom electrode 100 and the wiring electrode pattern 132a of the top electrode 200 are formed of a metal layer 130, and are coated with silver paste printing or silver paste using ink for silk screen printing. It is then simultaneously formed in one process, such as photosensitive silver paste printing to implement a pattern by photolithography exposure and development processes.
  • the structure of the touch panel of the first embodiment is difficult and the chip design is difficult or the metal section is long, it may have the structure of the touch panel of the third embodiment.
  • the metal layer 130 is formed on the upper surface of the insulator layer 110, and a plurality of metal layers 130 are formed by a photolithography process.
  • the X-axis electrostatic electrode 122b and the wiring electrode pattern 132b connected to one end of each X-axis electrostatic electrode 122b are formed. That is, the photolithography process is performed by dry film laminating, exposure, development, metal etching, peeling process.
  • the plurality of X-axis electrostatic electrodes 122b form a fine pattern metal mesh structure through the plurality of first linear electrode portions and the plurality of second linear electrode portions that cross each of the first linear electrode portions.
  • the metal mesh structure of the fine pattern is formed by performing the photolithography process (Wet process) to form the electrostatic electrode pattern 122b, the metal layer 130 is removed and patterned into a direct mesh structure or the metal layer 130 is deposited.
  • Various embodiments may be formed using a laser etching method to form a mesh structure.
  • the present invention forms a transparent conductive photosensitive film 160 on the upper surface of the touch panel, the transparent photosensitive resin layer 162 in the layer formed of the transparent conductive photosensitive film 160 by the exposure and development process of photolithography. And the plurality of Y-axis electrostatic electrodes 122a and 164 and the wiring electrode patterns 132a connected to one end of each of the Y-axis electrostatic electrodes 122a and 164 by selectively removing the transparent conductive material 164 stacked thereon. 164).
  • the bottom electrode 100 is formed of a metal mesh structure having a fine pattern formed of the metal layer 130, and the top electrode 200 is formed of a transparent conductive photosensitive film 160.
  • the manufacturing method of the touch panel according to the fifth embodiment of the present invention will be described in detail with the focus on the differences from the description overlapping with the manufacturing method of the touch panel of the third embodiment of the present invention described above. .
  • the transparent photosensitive resin layer 162 and the transparent conductive material stacked thereon are formed in the layer formed of the transparent conductive photosensitive film 160 by the photolithography exposure and development process. 164 is selectively removed to form a plurality of X-axis electrostatic electrodes 122b and 120.
  • the present invention after forming a plurality of X-axis electrostatic electrode 122b made of a transparent conductive photosensitive film 160, to form a transparent conductive photosensitive film 160 of a transparent material on the upper surface of the touch panel.
  • the present invention selectively removes the transparent photosensitive resin layer 162 and the transparent conductive material 164 stacked thereon from the layer formed of the transparent conductive photosensitive film 160 by the photolithography exposure and development process.
  • Y-axis electrostatic electrodes 122a and 164 are formed.
  • each of the X-axis electrostatic electrodes 122b and 120 is selectively removed by the photolithography process. And a wiring electrode pattern 132b connected to each other and a wiring electrode pattern 132a connected to one end of each of the Y-axis electrostatic electrodes 122a and 160 are simultaneously formed.
  • the wiring electrode pattern 132b of the bottom electrode 100 and the wiring electrode pattern 132a of the top electrode 200 are formed of a metal layer 130, and are coated with silver paste printing or silver paste using ink for silk screen printing. It is then simultaneously formed in one process, such as photosensitive silver paste printing to implement a pattern by photolithography exposure and development processes.
  • the transparent conductive material 164 is made of a conductive polymer to maintain the conductivity of the conductive polymer 164, and the The conductivity of the conductive polymer 164 may be lost to make it a non-conductive polymer 166 (conductive polymer patterning process).
  • insulator layer 112 index matching layer
  • 122a Y-axis electrostatic electrode 122b: X-axis electrostatic electrode
  • metal layer 132 wiring electrode pattern
  • first photosensitive material 142 first artwork film
  • second artwork film 160 transparent conductive photosensitive film
  • the present invention has the effect of lowering the raw material cost and the process cost by implementing a touch sensor using a transparent conductive photosensitive film.
  • the present invention has the effect of slimming the electrode through the use of a transparent conductive photosensitive film of about 5 ⁇ m because OCA is not used because the laminated with the light-transmissive photosensitive resin layer when the bottom electrode and the top electrode is laminated.
  • the present invention has the effect of improving the productivity by simplifying the manufacturing process of the existing touch panel.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)

Abstract

Un procédé pour fabriquer un panneau tactile comprend les étapes : de formation d'une pluralité d'électrodes électrostatiques de premier axe, qui sont formées sur une zone de fenêtre d'un panneau tactile et formées de manière à être séparées d'une distance uniforme, en retirant de manière sélective une couche conductrice transparente, et de formation d'une pluralité de fils métalliques conducteurs, qui sont formés sur une zone de bord du panneau tactile connectée à une extrémité de chacune des électrodes électrostatiques de premier axe, en retirant de manière sélective une couche de métal ; et de formation d'un film photosensible conducteur transparent sur la surface supérieure du panneau tactile, et ensuite de retrait de manière sélective du film photosensible conducteur transparent d'une couche comprenant le film photosensible conducteur transparent, pour former des électrodes électrostatiques de second axe qui sont séparées d'une distance spécifique des premières électrodes électrostatiques et qui croisent chacune de celles-ci, et de formation d'une électrode de câblage qui est formée sur une zone de bord du panneau tactile connectée à une extrémité de chacune des électrodes électrostatiques de second axe.
PCT/KR2014/008329 2013-09-06 2014-09-04 Panneau tactile utilisant un film photosensible conducteur transparent et procédé pour fabriquer ce panneau WO2015034291A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20130107460 2013-09-06
KR10-2013-0107460 2013-09-06
KR20140005068A KR101496246B1 (ko) 2013-09-06 2014-01-15 투명 전도성 감광필름을 이용한 터치 패널 및 제조 방법
KR10-2014-0005068 2014-01-15

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WO2015034291A1 true WO2015034291A1 (fr) 2015-03-12

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Cited By (1)

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CN107122086A (zh) * 2017-03-28 2017-09-01 深圳欧菲光科技股份有限公司 触控面板、显示设备及触控面板的制作方法

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KR20100040654A (ko) * 2008-10-10 2010-04-20 주식회사 케이비에프 윈도우 시트 일체형 터치패널
KR20110008453A (ko) * 2009-07-20 2011-01-27 (주) 월드비젼 윈도우 패널 일체형 정전용량방식 터치센서 및 그 제조방법
KR20120046055A (ko) * 2010-10-29 2012-05-09 (주)티메이 터치패널용 패드의 제조방법 및 이 제조방법에 의해 제조되는 터치패널용 패드
KR20130015304A (ko) * 2011-08-03 2013-02-14 (주)티메이 터치 패널용 패드의 제조 방법

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KR20100040654A (ko) * 2008-10-10 2010-04-20 주식회사 케이비에프 윈도우 시트 일체형 터치패널
KR20110008453A (ko) * 2009-07-20 2011-01-27 (주) 월드비젼 윈도우 패널 일체형 정전용량방식 터치센서 및 그 제조방법
KR20120046055A (ko) * 2010-10-29 2012-05-09 (주)티메이 터치패널용 패드의 제조방법 및 이 제조방법에 의해 제조되는 터치패널용 패드
KR20130015304A (ko) * 2011-08-03 2013-02-14 (주)티메이 터치 패널용 패드의 제조 방법

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107122086A (zh) * 2017-03-28 2017-09-01 深圳欧菲光科技股份有限公司 触控面板、显示设备及触控面板的制作方法

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