WO2015069048A1 - Écran tactile permettant de mettre en œuvre un capteur tactile au moyen d'une feuille de film, et son procédé de fabrication - Google Patents

Écran tactile permettant de mettre en œuvre un capteur tactile au moyen d'une feuille de film, et son procédé de fabrication Download PDF

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Publication number
WO2015069048A1
WO2015069048A1 PCT/KR2014/010636 KR2014010636W WO2015069048A1 WO 2015069048 A1 WO2015069048 A1 WO 2015069048A1 KR 2014010636 W KR2014010636 W KR 2014010636W WO 2015069048 A1 WO2015069048 A1 WO 2015069048A1
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WO
WIPO (PCT)
Prior art keywords
touch panel
axis electrostatic
electrostatic electrodes
transparent conductive
electrode
Prior art date
Application number
PCT/KR2014/010636
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English (en)
Korean (ko)
Inventor
박준영
정주현
송영진
노수천
한원희
김기보
Original Assignee
주식회사 티메이
박준영
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Priority claimed from KR1020140009463A external-priority patent/KR20150054613A/ko
Application filed by 주식회사 티메이, 박준영 filed Critical 주식회사 티메이
Publication of WO2015069048A1 publication Critical patent/WO2015069048A1/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
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • 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 method for manufacturing a touch panel, and in particular, a plurality of electrode terminals are formed in an FPCB bonding region in which a driving electrode and a sensing electrode are formed on an ITO film, and are combined with a flexible printed circuit board (FPCB).
  • the present invention relates to a touch panel and a manufacturing method for implementing a touch sensor using a single piece of film to reduce the number of pads by tying.
  • 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.
  • Such a capacitive touch panel especially a touch screen, has a structure of 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
  • Pads made of lead wires are 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 an X-axis electrode pattern in a conventional capacitive touch panel
  • Figure 2 is a view showing a Y-axis electrode pattern in a conventional capacitive touch panel
  • Figure 3 is a conventional capacitive touch panel 4 is a view illustrating a state in which the X-axis electrode pattern and the Y-axis electrode pattern are coalesced
  • FIG. 4 is a view illustrating a layer structure in a state in which the X-axis electrode pattern and the Y-axis electrode pattern are coalesced in a conventional capacitive touch panel. to be.
  • FIG. 1 is a diagram illustrating a conventional bottom pattern layer, and shows an X-axis electrode pattern
  • FIG. 2 is a diagram illustrating a conventional top pattern layer, and a Y-axis electrode pattern.
  • a bottom pattern having an X-axis electrostatic electrode 10 and a top pattern having a Y-axis electrostatic electrode 20 as shown in FIGS. 1 and 2 are respectively fabricated and laminated between layers, and then a window is attached to the touch panel. To prepare. The touch panel completed by this manufacturing process is shown in FIG. 3.
  • a conventional capacitive touch panel includes a bottom pattern having an X-axis electrostatic electrode 10 as a driving electrode and a top pattern having a Y-axis electrostatic electrode 20 as a sensing electrode. It is formed evenly on the upper surface of the connection electrodes 30, 40 on one side.
  • the layer structure of the conventional capacitive touch panel is shown in FIG. 4.
  • the OCA must be added to the top of the ITO film essentially, two ITO films were used, so two OCAs were required.
  • the conventional touch panel has a disadvantage in that it is expensive because two sheets of ITO film and OCA are used to make one touch panel product.
  • the present invention forms a drive electrode and a sensing electrode on a sheet of ITO film, and a method of tying a plurality of electrode terminals together in an FPCB bonding region combined with a flexible printed circuit board (FPCB). It is an object of the present invention to provide a touch panel and a manufacturing method for implementing a touch sensor using a single film to reduce the number of pads.
  • a photosensitive material of an insulating material is formed on the upper surface of the touch panel, and a layer formed of a transparent photosensitive material extends to a part of the FPCB bonding region coupled with the flexible printed circuit board (FPCB) to form a horizontal direction. Removing and opening an area where one end portion of each first axis electrostatic electrode is located; And
  • a metal layer is formed on the upper surface of the touch panel, and the metal layer is selectively removed to connect one end portion of each of the first axis electrostatic electrodes formed in the horizontal direction to one area in the horizontal direction, thereby connecting one side of each first axis electrostatic electrode.
  • Forming a first metal lead of the metal layer by tying one end to a metal electrode portion coupled to the FPCB.
  • a touch panel corresponds to a window area of a touch panel and is spaced apart in a horizontal direction at intervals of a predetermined distance to form a plurality of electrostatic electrodes, and a plurality of electrostatic electrodes are formed for each column by a predetermined distance.
  • One end portion of each of the first axis electrostatic electrodes formed in the upper surface of the touch panel and extending in a horizontal direction to a part of the FPCB bonding region coupled to the flexible printed circuit board (FPCB) is positioned.
  • each first axis electrostatic electrode formed in the horizontal direction By connecting one area where one end of each first axis electrostatic electrode formed in the horizontal direction is located in one horizontal direction, one end of each first axis electrostatic electrode and a metal electrode portion coupled to the FPCB are bundled together as a first metal lead. It includes a metal layer to form.
  • the present invention can reduce the thickness by manufacturing a touch sensor formed with a drive electrode and a sensing electrode on one sheet of ITO film, there is an effect that can reduce the raw material cost and process cost.
  • the present invention can implement a narrow bezel (Bezel) has the effect of forming a wide window area that is a user's touch area.
  • Bezel has the effect of forming a wide window area that is a user's touch area.
  • sharpness is excellent after forming an electrode trace based on a photolithography method.
  • the present invention has the effect of reducing the number of pads (Pad) by insulating and opening the jumping connection region for connecting the electrode terminal, and then bundling the jumping connection region by screen printing silver paste.
  • the metal layer is thinly formed to a thickness of 0.2 ⁇ m or less by a metal sputtering process, thereby reducing bubbles when laminating with glass by OCA, thereby securing high yield.
  • FIG. 1 is a view showing an X-axis electrode pattern in a conventional capacitive touch panel.
  • FIG. 2 illustrates a Y-axis electrode pattern in a conventional capacitive touch panel.
  • FIG. 3 is a view illustrating a state in which an X-axis electrode pattern and a Y-axis electrode pattern are coalesced in a conventional capacitive touch panel.
  • FIG. 4 is a diagram illustrating a layer structure in a state in which an X-axis electrode pattern and a Y-axis electrode pattern are combined in a conventional capacitive touch panel.
  • 5 to 7 are diagrams illustrating a method of manufacturing a touch panel implementing a touch sensor using a single film according to an embodiment of the present invention in a layer structure on the side.
  • FIG. 8 is a plan view showing a top view of a touch panel implementing a touch sensor using a single film according to an embodiment of the present invention.
  • FIG. 9 is a view schematically illustrating a touch panel implementing a touch sensor using a single film according to an embodiment of the present invention.
  • FIG. 10 is a diagram illustrating an example of a metal lead connected to each X-axis electrostatic electrode and one end thereof in a touch panel according to an exemplary embodiment of the present invention.
  • FIG. 11 is a diagram illustrating an example of a metal lead connected to each Y-axis electrostatic electrode and one end thereof in a touch panel according to an exemplary embodiment of the present invention.
  • FIG. 12 is a view showing an example in which a transparent conductive layer according to another embodiment of the present invention is formed of a transparent conductive photosensitive film.
  • FIG. 13 is a view showing an example in which a transparent conductive layer is formed of a conductive polymer according to another embodiment of the present invention.
  • the sensing electrode senses a change in the voltage value of the mutual cap to detect whether or not the touch is performed. The touch position is detected.
  • the sensing electrodes Receive and Rx detect whether the touch panel is touched and the touch position as a change in the voltage value, and the driving voltages of the touch electrodes Transfer and Tx are applied.
  • FIG. 5 to 7 are diagrams showing a method of manufacturing a touch panel implementing a touch sensor using a single film according to an embodiment of the present invention in a layer structure on the side
  • FIG. 8 is a view according to an embodiment of the present invention.
  • 9 is a plan view illustrating a touch panel implementing a touch sensor using a sheet of film
  • FIG. 9 is a view schematically illustrating a touch panel implementing a touch sensor using a sheet of film according to an embodiment of the present invention.
  • FIG. 10 is a view showing an example of each of the X-axis electrostatic electrode and the metal conductor connected to one end thereof in the touch panel according to an embodiment of the present invention
  • Figure 11 is a respective Y axis in the touch panel according to an embodiment of the present invention
  • 2 is a diagram illustrating an example of a metal conductive wire connected to an electrostatic electrode and one end thereof.
  • an index matching layer (Index-Matching) 112 is formed on the upper surface of the insulator layer 110, and thereon.
  • the transparent conductive layer 120 is formed.
  • 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 improves visibility 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 120 is a transparent conductive photosensitive film, a conductive polymer, carbon nanotubes (CNT), graphene (Graphene), conductive polymers, silver nanowires (AGNW), Hybrid AGNW ( CNT + AGNW), hybrid graphene (AGNW + graphene) and the like can be formed of a transparent conductive material.
  • 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 present invention forms a first photosensitive material 140 on the upper surface of the transparent conductive layer 120, the pattern is formed When UV irradiation is performed using the first artwork film 142, a pattern is formed on the first photosensitive material 140 (exposure), and an open pattern is formed on the first photosensitive material 140 using a weak alkali solution. (phenomenon).
  • 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 selectively etches the transparent conductive layer 120 using an acidic chemical to the first photosensitive material 140 having an open pattern.
  • the first photosensitive material 140 is removed using a strong alkali chemical to form the electrostatic electrode pattern 121 (etching process, peeling process).
  • 6 (e) and 6 (f) are subjected to laminating, exposure, development, etching, and peeling by a process of photolithography.
  • the electrostatic electrode pattern 121 is a portion corresponding to the window area (the area where the screen is displayed) of the touch panel, and represents a pattern representing a plurality of electrostatic electrodes formed spaced at intervals of a predetermined distance, and represents a user's touch pattern area.
  • the electrostatic electrode pattern 121 includes a plurality of X-axis electrostatic electrodes 122 and respective Y-axis electrostatic electrodes 124 which are adjacently surrounded by the respective X-axis electrostatic electrodes 122.
  • the plurality of X-axis electrostatic electrodes 122 represent a plurality of driving electrodes Transfer and Tx
  • the plurality of Y-axis electrostatic electrodes 124 include sensing electrodes Receive and Rx surrounding each driving electrode.
  • the plurality of X-axis electrostatic electrodes 122 are spaced apart in the horizontal direction at intervals of a predetermined distance in the window area of the touch panel to form a plurality of electrostatic electrodes, and the plurality of electrostatics The electrodes are formed at intervals of a certain distance apart.
  • the plurality of Y-axis electrostatic electrodes 124 are a plurality of electrostatic electrodes that are adjacently surrounded by the respective X-axis electrostatic electrodes 122 in the vertical direction, and the plurality of electrostatics The electrodes are formed in rows by spaced distances.
  • the plurality of X-axis electrostatic electrodes 122 extend from one side of each X-axis electrostatic electrode formed in the horizontal direction to a part of the FPCB bonding region 200, respectively.
  • the plurality of Y-axis electrostatic electrodes 124 extends to a part of the FPCB bonding region 200 by connecting each of the Y-axis electrostatic electrodes formed in the vertical direction to one.
  • the FPCB bonding region 200 is an edge region excluding the window region of the touch panel, and includes a metal electrode portion coupled to a flexible printed circuit board (FPCB) and a region except the window region touched by the user.
  • FPCB flexible printed circuit board
  • the transparent photosensitive material of transparent material is formed on the upper surface of the touch panel. 150) (laminating, coating or deposition process).
  • the transparent photosensitive material 150 may include a transparent dry film as an example of a photosensitive transparent insulating material.
  • the transparent photosensitive material 150 it can be left in the transparent window area, it is possible to prevent a defect such as scratches in the post-process.
  • the transparent photosensitive material 150 is used as an insulating material.
  • the present invention forms a second artwork film 152 on the upper surface of the transparent photosensitive material 150, and the photolithography exposure and development process By selectively removing the jumping connection region 160 in the layer of the transparent photosensitive material 150 of the touch panel to open.
  • the jumping connection region 160 extends from a layer formed of the transparent photosensitive material 150 to a part of the FPCB bonding region 200 so that one end portion of each X-axis electrostatic electrode 122 formed in the horizontal direction is located. Indicates.
  • the jumping connection region 160 extends from a layer formed of the transparent photosensitive material 150 to a part of the FPCB bonding region 200 and is located at one end portion of each of the Y-axis electrostatic electrodes 124 formed in the vertical direction. Indicates.
  • the pattern of opening the jumping connection region 160 to the transparent photosensitive material 150 is a jump of the touch panel in the layer made of the transparent photosensitive material 150 formed on the upper surface of the touch panel as shown in FIG.
  • the pattern corresponding to the connection region 160 is an open pattern.
  • the present invention illustrates the patterned second artwork film 152, but is not limited thereto, and any pattern tool having a pattern for opening the jumping connection region 160 may be used.
  • An exposure process may be performed using equipment that implements a pattern.
  • the present invention forms a metal layer 130 on the upper surface of the touch panel.
  • Circuit formation of the metal layer 130 is deposited by a metal sputter (Metal Sputter) to form a pattern using a process of photolithography.
  • Metal Sputter Metal Sputter
  • the metal layer 130 may be formed of 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 + Cu + Ti, carbon and all conductive materials are included.
  • the metal layer 130 may be formed of a silver paste, or various 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 jumping connection region 160 which is an area where one end of each of the X-axis electrostatic electrodes 122 formed in the horizontal direction by selectively removing the metal layer 130 by the photolithography process, is positioned in the horizontal direction.
  • the first metal lead wire 132 is formed by connecting to one end and tying together one end of each X-axis electrostatic electrode 122 and the metal electrode part coupled to the FPCB (FIGS. 8, 9, and 10).
  • the metal layer 130 is selectively removed by the photolithography process, and the metal electrode portion coupled to the FPCB from one end of the Y-axis electrostatic electrode 124 extending to a part of the FPCB bonding region 200.
  • the second metal lead wire 134 is formed (FIGS. 8, 9, and 11).
  • lamination, exposure, development, etching, and peeling are performed by a process of photolithography.
  • each of the first metal conductors 132 is connected to the metal electrode portion to which the FPCB is coupled by tying one end portion of each X-axis electrostatic electrode 122 formed in the horizontal direction in one horizontal direction. do.
  • each second metal lead 134 is connected from one end portion of each of the Y-axis electrostatic electrodes 124 formed in the vertical direction to the metal electrode portion to which the FPCB is coupled.
  • the present invention forms an open pattern on the first photosensitive material 140, and then screen-prints the silver paste using the ink for silk screen printing or applies the silver paste to the exposure and development process of photolithography.
  • photosensitive silver paste printing the number of pads is reduced by bonding the electrode terminals (the first metal lead 132 and the second metal lead 134) into one.
  • FIG. 12 is a view showing an example in which a transparent conductive layer according to another embodiment of the present invention is formed of a transparent conductive photosensitive film.
  • the transparent conductive layer 120 of the present invention may be composed of transparent conductive photosensitive films 170 and 172.
  • the transparent conductive photosensitive films 170 and 172 include a transparent photosensitive resin layer 172 and a transparent conductive material 170 stacked thereon.
  • the transparent conductive material 170 is a conductive and photosensitive transparent material, carbon nanotubes (CNT), graphene, conductive polymers, 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 selectively removes the transparent photosensitive resin layer 172 and the transparent conductive material 170 stacked thereon from a layer formed of the transparent conductive photosensitive films 170 and 172 by photolithography exposure and development processes.
  • An X-axis electrostatic electrode 122 and a plurality of Y-axis electrostatic electrodes 124 are formed.
  • the open pattern formed on the transparent conductive photosensitive film 160 represents the electrostatic electrode pattern 121 including the plurality of X-axis electrostatic electrodes 122 and the plurality of Y-axis electrostatic electrodes 124.
  • the electrostatic electrode pattern 121 is formed by an exposure and development process of photolithography. After that, since the electrode forming procedure is performed in the same manner as the electrode forming procedure of FIGS. 6G to 7K, detailed descriptions thereof will be omitted.
  • FIG. 13 is a view showing an example in which a transparent conductive layer is formed of a conductive polymer according to another embodiment of the present invention.
  • the transparent conductive layer 120 of the present invention may be made of a conductive polymer.
  • the conductive polymer may be polythiophene-based, polypyrrole-based, polyaniline-based, polyacetylene-based, polyphenylene-based, or the like, and is particularly preferred among the polythiophene-based PEDOT / PSS compounds.
  • One or more of the compounds may be mixed and used.
  • the conductivity may be increased.
  • the conductive polymer maintains conductivity by the structure of the double bond benzene ring.
  • the conductive polymer can be removed by the wet process, the wet process can be removed by boiling the structure of the double bond benzene ring by reacting with the etchant (180) as shown in Figure 8 to make a single bond. have.
  • the conductive polymer is made of the non-conductive polymer 190, the polymer layer is maintained as it is, but the conductivity is lost, and the conductivity does not return to the original state because it is not restored to the double bond again without a special catalyst.
  • the electrostatic electrode pattern 121 including the plurality of X-axis electrostatic electrodes 122 and the plurality of Y-axis electrostatic electrodes 124 may be formed by a wet process. It maintains the conductivity of the conductive polymer, and loses the conductivity of the conductive polymer in the region other than the touch pattern to make a non-conductive polymer 190 (conductive polymer patterning process). After that, since the electrode forming procedure is performed in the same manner as the electrode forming procedure of FIGS. 6G to 7K, detailed descriptions thereof will be omitted.
  • the present invention covers the FPCB bonding region 200 with a conductive polymer to prevent corrosion of the oxidation generating region, to prevent the problem of metal cracking by external pressure, and to perform a buffering function during FPCB bonding, and a separate sealing and water repellent coating process Omitted to reduce process costs.
  • 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.
  • the present invention can reduce the thickness by manufacturing a touch sensor formed with a drive electrode and a sensing electrode on one sheet of ITO film, there is an effect that can reduce the raw material cost and process cost.
  • the present invention can implement a narrow bezel (Bezel) has the effect of forming a wide window area that is a user's touch area.
  • Bezel has the effect of forming a wide window area that is a user's touch area.
  • sharpness is excellent after forming an electrode trace based on a photolithography method.
  • the present invention has the effect of reducing the number of pads (Pad) by insulating and opening the jumping connection region for connecting the electrode terminal, and then bundling the jumping connection region by screen printing silver paste.
  • the metal layer is thinly formed to a thickness of 0.2 ⁇ m or less by a metal sputtering process, thereby reducing bubbles when laminating with glass by OCA, thereby securing high yield.

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  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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Abstract

L'invention se rapporte au procédé de fabrication d'un écran tactile, qui consiste : à former une pluralité d'électrodes électrostatiques qui correspondent à des zones de fenêtres d'un écran tactile et qui sont séparées par un intervalle prédéfini dans le sens de la largeur, et à former, pour faire office de couches conductrices transparentes, des électrodes électrostatiques ayant un premier axe, qui se trouvent dans chaque colonne, grâce à l'espacement de la pluralité d'électrodes électrostatiques selon une distance prédéfinie, ainsi qu'une pluralité d'électrodes électrostatiques ayant un second axe conçues de manière à être voisines de chacune des électrodes électrostatiques ayant un premier axe placées dans le sens de la longueur ; à obtenir une matière photosensible constituée d'une matière isolante sur la surface supérieure de l'écran tactile, et à retirer et ouvrir, sur une couche composée d'une matière photosensible transparente, des zones où sont situées les parties terminales unilatérales de chaque électrode électrostatique ayant un premier axe formée dans le sens de la largeur par extension jusqu'à une position partielle d'une zone de liaison d'une carte de circuit imprimé souple (FPCB) couplée à ladite FPCB ; puis à créer une couche métallique sur la surface supérieure de l'écran tactile, et à connecter horizontalement, pour qu'elles ne fassent plus qu'une, les zones où sont situées les parties terminales unilatérales de chacune des électrodes électrostatiques ayant un premier axe formées dans le sens de la largeur, par retrait sélectif de la couche métallique afin d'aboutir à un premier fil conducteur métallique de la couche métallique grâce à la liaison, de façon à ce qu'elles ne fassent plus qu'une, des parties d'électrodes métalliques couplées à la FPCB et des parties terminales unilatérales de chacune des électrodes électrostatiques ayant un premier axe.
PCT/KR2014/010636 2013-11-11 2014-11-06 Écran tactile permettant de mettre en œuvre un capteur tactile au moyen d'une feuille de film, et son procédé de fabrication WO2015069048A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20130136553 2013-11-11
KR10-2013-0136553 2013-11-11
KR1020140009463A KR20150054613A (ko) 2013-11-11 2014-01-27 한 장의 필름을 이용한 터치 센서를 구현하는 터치 패널 및 제조 방법
KR10-2014-0009463 2014-01-27

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017014543A1 (fr) * 2015-07-20 2017-01-26 Lg Electronics Inc. Panneau tactile et appareil d'affichage comprenant ce dernier
CN109558036A (zh) * 2017-09-25 2019-04-02 华为终端（东莞）有限公司 一种阵列基板及显示面板
CN110456944A (zh) * 2019-08-15 2019-11-15 业成科技（成都）有限公司 触控面板及其制作方法
WO2020124780A1 (fr) * 2018-12-18 2020-06-25 武汉华星光电半导体显示技术有限公司 Écran tactile et son procédé de fabrication, et appareil électronique

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WO2020124780A1 (fr) * 2018-12-18 2020-06-25 武汉华星光电半导体显示技术有限公司 Écran tactile et son procédé de fabrication, et appareil électronique
CN110456944A (zh) * 2019-08-15 2019-11-15 业成科技（成都）有限公司 触控面板及其制作方法

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